| Seq | Timestamp | Type | Name | Duration |
|---|---|---|---|---|
| 0/0 | 2026/08/12 23:25 | flow | patch-triage |
1mArgs:null Results: {
"EnableConfigs": [
"NF_TABLES"
],
"FocusSymbols": [
"nf_tables_commit",
"nf_tables_abort",
"nf_tables_newsetelem",
"nf_tables_delsetelem"
],
"KMSANReasoning": "The patch refactors the transaction commit and abort logic in netfilter tables (nf_tables). It moves the `set_update_list` from being a local variable in `nf_tables_commit` and `__nf_tables_abort` to a per-net namespace structure (`struct nftables_pernet`). It also adjusts the order of operations during the commit phase, specifically calling `nft_set_commit_update` earlier and modifying how `NFT_MSG_DELSETELEM` messages are processed and notified.\n\nThese changes are purely related to control flow, list management, and the netfilter transaction state machine (likely to fix a race condition, use-after-free, or ordering issue). The patch does not introduce any new data structures that are copied to user space, nor does it modify buffer allocations, bounds checking, or initialization logic in a way that could expose uninitialized kernel memory (info-leaks) or cause uninitialized memory to be used in control flow.\n\nAny bugs introduced or fixed by this patch (such as use-after-free, double-free, or list corruption) would be reliably detected by standard KASAN and standard kernel debug options (like `CONFIG_DEBUG_LIST`). Therefore, a dedicated KMSAN fuzzing session is not justified.",
"NeedsKMSAN": false,
"Reasoning": "The patch modifies the netfilter nf_tables API to introduce a `set_update_list` in `struct nftables_pernet`. It changes how set elements are added, removed, and aborted during netlink transactions. Specifically, it modifies `nft_trans_commit_list_add_elem`, `nft_set_commit_update`, `nf_tables_commit`, and `__nf_tables_abort` to handle the new list and ensure proper ordering of set updates. This is a functional change in the core netfilter logic that is reachable via netlink sockets and should be fuzzed to prevent regressions or memory corruption issues.",
"WorthFuzzing": true
} |
| 1/1 | 2026/08/12 23:25 | action | read-patch-diff |
0mArgs:null Results: {
"PatchDiff": "commit 0d9312a0d8da6ce82e05368439a99f7a60d2f91c\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate: Wed Aug 12 23:25:32 2026 +0000\n\n syz-cluster: applied patch under review\n\ndiff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h\nindex 3be612145c130..238f6ecb90e99 100644\n--- a/include/net/netfilter/nf_tables.h\n+++ b/include/net/netfilter/nf_tables.h\n@@ -1949,6 +1949,7 @@ struct nftables_pernet {\n \tstruct list_head\tbinding_list;\n \tstruct list_head\tmodule_list;\n \tstruct list_head\tnotify_list;\n+\tstruct list_head\tset_update_list;\n \tstruct mutex\t\tcommit_mutex;\n \tu64\t\t\ttable_handle;\n \tu64\t\t\ttstamp;\ndiff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c\nindex af357f6c5070b..5c4f6c3545950 100644\n--- a/net/netfilter/nf_tables_api.c\n+++ b/net/netfilter/nf_tables_api.c\n@@ -595,10 +595,15 @@ static void nft_trans_commit_list_add_tail(struct net *net, struct nft_trans *tr\n static void nft_trans_commit_list_add_elem(struct net *net, struct nft_trans *trans)\n {\n \tstruct nftables_pernet *nft_net = nft_pernet(net);\n+\tstruct nft_trans_elem *te;\n \n \tWARN_ON_ONCE(trans-\u003emsg_type != NFT_MSG_NEWSETELEM \u0026\u0026\n \t\t trans-\u003emsg_type != NFT_MSG_DELSETELEM);\n \n+\tte = nft_trans_container_elem(trans);\n+\tif (te-\u003eset-\u003eops-\u003ecommit \u0026\u0026 list_empty(\u0026te-\u003eset-\u003epending_update))\n+\t\tlist_add_tail(\u0026te-\u003eset-\u003epending_update, \u0026nft_net-\u003eset_update_list);\n+\n \tif (nft_trans_try_collapse(nft_net, trans)) {\n \t\tkfree(trans);\n \t\treturn;\n@@ -7205,6 +7210,20 @@ static void nft_trans_elems_remove(const struct nft_ctx *ctx,\n \t}\n }\n \n+static void nft_trans_elems_remove_notify(const struct nft_ctx *ctx,\n+\t\t\t\t\t const struct nft_trans_elem *te)\n+{\n+\tint i;\n+\n+\tfor (i = 0; i \u003c te-\u003enelems; i++) {\n+\t\tWARN_ON_ONCE(te-\u003eelems[i].update);\n+\n+\t\tnf_tables_setelem_notify(ctx, te-\u003eset,\n+\t\t\t\t\t te-\u003eelems[i].priv,\n+\t\t\t\t\t te-\u003enft_trans.msg_type);\n+\t}\n+}\n+\n static bool nft_setelem_valid_key_end(const struct nft_set *set,\n \t\t\t\t struct nlattr **nla, u32 flags)\n {\n@@ -10848,11 +10867,31 @@ static void nf_tables_commit_audit_log(struct list_head *adl, u32 generation)\n \t}\n }\n \n-static void nft_set_commit_update(struct list_head *set_update_list)\n+static void nft_set_commit_update(struct nft_ctx *ctx,\n+\t\t\t\t struct nftables_pernet *nft_net)\n {\n \tstruct nft_set *set, *next;\n+\tstruct nft_trans_elem *te;\n+\tstruct nft_trans *trans;\n \n-\tlist_for_each_entry_safe(set, next, set_update_list, pending_update) {\n+\tif (list_empty(\u0026nft_net-\u003eset_update_list))\n+\t\treturn;\n+\n+\tlist_for_each_entry(trans, \u0026nft_net-\u003ecommit_list, list) {\n+\t\tnft_ctx_update(ctx, trans);\n+\n+\t\tswitch (trans-\u003emsg_type) {\n+\t\tcase NFT_MSG_DELSETELEM:\n+\t\t\tte = nft_trans_container_elem(trans);\n+\t\t\tif (!te-\u003eset-\u003eops-\u003ecommit)\n+\t\t\t\tbreak;\n+\n+\t\t\tnft_trans_elems_remove(ctx, te);\n+\t\t\tbreak;\n+\t\t}\n+\t}\n+\n+\tlist_for_each_entry_safe(set, next, \u0026nft_net-\u003eset_update_list, pending_update) {\n \t\tlist_del_init(\u0026set-\u003epending_update);\n \n \t\tif (!set-\u003eops-\u003ecommit || set-\u003edead)\n@@ -10885,7 +10924,6 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)\n \tstruct nft_trans_binding *trans_binding;\n \tstruct nft_trans *trans, *next;\n \tunsigned int base_seq, gc_seq;\n-\tLIST_HEAD(set_update_list);\n \tstruct nft_trans_elem *te;\n \tstruct nft_chain *chain;\n \tstruct nft_table *table;\n@@ -10960,6 +10998,8 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)\n \t}\n \n \t/* step 2. Make rules_gen_X visible to packet path */\n+\tnft_set_commit_update(\u0026ctx, nft_net);\n+\n \tlist_for_each_entry(table, \u0026nft_net-\u003etables, list) {\n \t\tlist_for_each_entry(chain, \u0026table-\u003echains, list)\n \t\t\tnf_tables_commit_chain(net, chain);\n@@ -11091,27 +11131,16 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)\n \t\t\tbreak;\n \t\tcase NFT_MSG_NEWSETELEM:\n \t\t\tte = nft_trans_container_elem(trans);\n-\n \t\t\tnft_trans_elems_add(\u0026ctx, te);\n-\n-\t\t\tif (te-\u003eset-\u003eops-\u003ecommit \u0026\u0026\n-\t\t\t list_empty(\u0026te-\u003eset-\u003epending_update)) {\n-\t\t\t\tlist_add_tail(\u0026te-\u003eset-\u003epending_update,\n-\t\t\t\t\t \u0026set_update_list);\n-\t\t\t}\n \t\t\tnft_trans_destroy(trans);\n \t\t\tbreak;\n \t\tcase NFT_MSG_DELSETELEM:\n \t\tcase NFT_MSG_DESTROYSETELEM:\n \t\t\tte = nft_trans_container_elem(trans);\n-\n-\t\t\tnft_trans_elems_remove(\u0026ctx, te);\n-\n-\t\t\tif (te-\u003eset-\u003eops-\u003ecommit \u0026\u0026\n-\t\t\t list_empty(\u0026te-\u003eset-\u003epending_update)) {\n-\t\t\t\tlist_add_tail(\u0026te-\u003eset-\u003epending_update,\n-\t\t\t\t\t \u0026set_update_list);\n-\t\t\t}\n+\t\t\tif (te-\u003eset-\u003eops-\u003ecommit)\n+\t\t\t\tnft_trans_elems_remove_notify(\u0026ctx, te);\n+\t\t\telse\n+\t\t\t\tnft_trans_elems_remove(\u0026ctx, te);\n \t\t\tbreak;\n \t\tcase NFT_MSG_NEWOBJ:\n \t\t\tif (nft_trans_obj_update(trans)) {\n@@ -11180,8 +11209,6 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)\n \t\t}\n \t}\n \n-\tnft_set_commit_update(\u0026set_update_list);\n-\n \tnft_commit_notify(net, NETLINK_CB(skb).portid);\n \tnf_tables_gen_notify(net, skb, NFT_MSG_NEWGEN);\n \tnf_tables_commit_audit_log(\u0026adl, nft_base_seq(net));\n@@ -11247,11 +11274,11 @@ static void nf_tables_abort_release(struct nft_trans *trans)\n \tkfree(trans);\n }\n \n-static void nft_set_abort_update(struct list_head *set_update_list)\n+static void nft_set_abort_update(struct nftables_pernet *nft_net)\n {\n \tstruct nft_set *set, *next;\n \n-\tlist_for_each_entry_safe(set, next, set_update_list, pending_update) {\n+\tlist_for_each_entry_safe(set, next, \u0026nft_net-\u003eset_update_list, pending_update) {\n \t\tlist_del_init(\u0026set-\u003epending_update);\n \n \t\tif (!set-\u003eops-\u003eabort)\n@@ -11386,33 +11413,22 @@ static int __nf_tables_abort(struct net *net, enum nfnl_abort_action action)\n \t\t\tnft_trans_destroy(trans);\n \t\t\tbreak;\n \t\tcase NFT_MSG_NEWSETELEM:\n+\t\t\tte = nft_trans_container_elem(trans);\n \t\t\tif (nft_trans_elem_set_bound(trans)) {\n+\t\t\t\tlist_del_init(\u0026te-\u003eset-\u003epending_update);\n \t\t\t\tnft_trans_destroy(trans);\n \t\t\t\tbreak;\n \t\t\t}\n-\t\t\tte = nft_trans_container_elem(trans);\n \t\t\tif (!nft_trans_elems_new_abort(\u0026ctx, te)) {\n \t\t\t\tnft_trans_destroy(trans);\n \t\t\t\tbreak;\n \t\t\t}\n-\n-\t\t\tif (te-\u003eset-\u003eops-\u003eabort \u0026\u0026\n-\t\t\t list_empty(\u0026te-\u003eset-\u003epending_update)) {\n-\t\t\t\tlist_add_tail(\u0026te-\u003eset-\u003epending_update,\n-\t\t\t\t\t \u0026set_update_list);\n-\t\t\t}\n \t\t\tbreak;\n \t\tcase NFT_MSG_DELSETELEM:\n \t\tcase NFT_MSG_DESTROYSETELEM:\n \t\t\tte = nft_trans_container_elem(trans);\n \n \t\t\tnft_trans_elems_destroy_abort(\u0026ctx, te);\n-\n-\t\t\tif (te-\u003eset-\u003eops-\u003eabort \u0026\u0026\n-\t\t\t list_empty(\u0026te-\u003eset-\u003epending_update)) {\n-\t\t\t\tlist_add_tail(\u0026te-\u003eset-\u003epending_update,\n-\t\t\t\t\t \u0026set_update_list);\n-\t\t\t}\n \t\t\tnft_trans_destroy(trans);\n \t\t\tbreak;\n \t\tcase NFT_MSG_NEWOBJ:\n@@ -11458,7 +11474,7 @@ static int __nf_tables_abort(struct net *net, enum nfnl_abort_action action)\n \n \tWARN_ON_ONCE(!list_empty(\u0026nft_net-\u003ecommit_set_list));\n \n-\tnft_set_abort_update(\u0026set_update_list);\n+\tnft_set_abort_update(nft_net);\n \n \tsynchronize_rcu();\n \n@@ -12142,6 +12158,7 @@ static int __net_init nf_tables_init_net(struct net *net)\n \tINIT_LIST_HEAD(\u0026nft_net-\u003ebinding_list);\n \tINIT_LIST_HEAD(\u0026nft_net-\u003emodule_list);\n \tINIT_LIST_HEAD(\u0026nft_net-\u003enotify_list);\n+\tINIT_LIST_HEAD(\u0026nft_net-\u003eset_update_list);\n \tmutex_init(\u0026nft_net-\u003ecommit_mutex);\n \tnet-\u003enft.base_seq = 1;\n \tnft_net-\u003egc_seq = 0;\n@@ -12186,6 +12203,7 @@ static void __net_exit nf_tables_exit_net(struct net *net)\n \tWARN_ON_ONCE(!list_empty(\u0026nft_net-\u003emodule_list));\n \tWARN_ON_ONCE(!list_empty(\u0026nft_net-\u003enotify_list));\n \tWARN_ON_ONCE(!list_empty(\u0026nft_net-\u003edestroy_list));\n+\tWARN_ON_ONCE(!list_empty(\u0026nft_net-\u003eset_update_list));\n }\n \n static void nf_tables_exit_batch(struct list_head *net_exit_list)\n"
} |
| 2/1 | 2026/08/12 23:25 | agent | patch-evaluator |
0mModel:best-expensive Args: null Results: {
"EnableConfigs": [
"NF_TABLES"
],
"FocusSymbols": [
"nf_tables_commit",
"nf_tables_abort",
"nf_tables_newsetelem",
"nf_tables_delsetelem"
],
"Reasoning": "The patch modifies the netfilter nf_tables API to introduce a `set_update_list` in `struct nftables_pernet`. It changes how set elements are added, removed, and aborted during netlink transactions. Specifically, it modifies `nft_trans_commit_list_add_elem`, `nft_set_commit_update`, `nf_tables_commit`, and `__nf_tables_abort` to handle the new list and ensure proper ordering of set updates. This is a functional change in the core netfilter logic that is reachable via netlink sockets and should be fuzzed to prevent regressions or memory corruption issues.",
"WorthFuzzing": true
}Instruction: You are an expert Linux kernel maintainer. Your job is to review a provided patch series and determine if it makes functional changes to the kernel that should be fuzzed. IMPORTANT: The changes have ALREADY been applied and committed as the HEAD commit in your workspace. Do NOT rely on your internal knowledge of the kernel. You must actively use your code access tools to examine the actual source code and confirm any assumptions. Return WorthFuzzing=false if the patch only contains: - Modifications to Documentation/, Kconfig files, or code comments. - Purely decorative changes, such as logging (e.g., pr_err, printk) or tracepoints. - Changes to numeric constants or macros that do not functionally alter execution flow. - Code paths that are impossible to reach in virtualized environments like GCE or QEMU, even when utilizing software-emulated hardware (e.g., usb gadget, mac80211_hwsim). - Code in vendor-specific PCIe switch, SmartNIC, or GPU drivers (e.g., mlxsw, pds_core, qed, ionic, amdgpu) that require physical PCIe hardware cards not emulated in standard QEMU. - Driver .remove, .shutdown, or pci_unregister_driver teardown callbacks (e.g., igb_remove) that are executed only during PCI hot-unplug or sysfs driver unbind operations. If it modifies reachable core kernel logic, drivers, or architectures, use your code search tools to verify the code can be executed, then return WorthFuzzing=true. When returning WorthFuzzing=true, you MUST ALSO: 1. Extract any specific kernel functions that should be heavily fuzzed into FocusSymbols. Avoid listing generic hot-path functions to prevent skewed test distributions. Prefer non-static, non-inlined API entrypoint functions over internal static helper functions (which are inlined by the compiler and do not have distinct symbol addresses). 2. Identify any specific CONFIG_ options required to properly test this new/modified feature. Go and look into the Kconfig files and check for ifdefs around the code, do not make assumptions. Also check "depends on" lines in Kconfig to include any non-standard parent subsystem configs needed for Kbuild to compile the code statically into vmlinux. List them in the EnableConfigs output array, and DO NOT add a 'CONFIG_' prefix (e.g., return "NET_IPV4" instead of "CONFIG_NET_IPV4"). Prefer calling several tools at the same time to save round-trips. Use set-results tool to provide results of the analysis. It must be called exactly once before the final reply. Ignore results of this tool. Prompt: For your convenience, here is the diff of the changes:
commit 0d9312a0d8da6ce82e05368439a99f7a60d2f91c
Author: syz-cluster <triage@syzkaller.com>
Date: Wed Aug 12 23:25:32 2026 +0000
syz-cluster: applied patch under review
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 3be612145c130..238f6ecb90e99 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -1949,6 +1949,7 @@ struct nftables_pernet {
struct list_head binding_list;
struct list_head module_list;
struct list_head notify_list;
+ struct list_head set_update_list;
struct mutex commit_mutex;
u64 table_handle;
u64 tstamp;
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index af357f6c5070b..5c4f6c3545950 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -595,10 +595,15 @@ static void nft_trans_commit_list_add_tail(struct net *net, struct nft_trans *tr
static void nft_trans_commit_list_add_elem(struct net *net, struct nft_trans *trans)
{
struct nftables_pernet *nft_net = nft_pernet(net);
+ struct nft_trans_elem *te;
WARN_ON_ONCE(trans->msg_type != NFT_MSG_NEWSETELEM &&
trans->msg_type != NFT_MSG_DELSETELEM);
+ te = nft_trans_container_elem(trans);
+ if (te->set->ops->commit && list_empty(&te->set->pending_update))
+ list_add_tail(&te->set->pending_update, &nft_net->set_update_list);
+
if (nft_trans_try_collapse(nft_net, trans)) {
kfree(trans);
return;
@@ -7205,6 +7210,20 @@ static void nft_trans_elems_remove(const struct nft_ctx *ctx,
}
}
+static void nft_trans_elems_remove_notify(const struct nft_ctx *ctx,
+ const struct nft_trans_elem *te)
+{
+ int i;
+
+ for (i = 0; i < te->nelems; i++) {
+ WARN_ON_ONCE(te->elems[i].update);
+
+ nf_tables_setelem_notify(ctx, te->set,
+ te->elems[i].priv,
+ te->nft_trans.msg_type);
+ }
+}
+
static bool nft_setelem_valid_key_end(const struct nft_set *set,
struct nlattr **nla, u32 flags)
{
@@ -10848,11 +10867,31 @@ static void nf_tables_commit_audit_log(struct list_head *adl, u32 generation)
}
}
-static void nft_set_commit_update(struct list_head *set_update_list)
+static void nft_set_commit_update(struct nft_ctx *ctx,
+ struct nftables_pernet *nft_net)
{
struct nft_set *set, *next;
+ struct nft_trans_elem *te;
+ struct nft_trans *trans;
- list_for_each_entry_safe(set, next, set_update_list, pending_update) {
+ if (list_empty(&nft_net->set_update_list))
+ return;
+
+ list_for_each_entry(trans, &nft_net->commit_list, list) {
+ nft_ctx_update(ctx, trans);
+
+ switch (trans->msg_type) {
+ case NFT_MSG_DELSETELEM:
+ te = nft_trans_container_elem(trans);
+ if (!te->set->ops->commit)
+ break;
+
+ nft_trans_elems_remove(ctx, te);
+ break;
+ }
+ }
+
+ list_for_each_entry_safe(set, next, &nft_net->set_update_list, pending_update) {
list_del_init(&set->pending_update);
if (!set->ops->commit || set->dead)
@@ -10885,7 +10924,6 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)
struct nft_trans_binding *trans_binding;
struct nft_trans *trans, *next;
unsigned int base_seq, gc_seq;
- LIST_HEAD(set_update_list);
struct nft_trans_elem *te;
struct nft_chain *chain;
struct nft_table *table;
@@ -10960,6 +10998,8 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)
}
/* step 2. Make rules_gen_X visible to packet path */
+ nft_set_commit_update(&ctx, nft_net);
+
list_for_each_entry(table, &nft_net->tables, list) {
list_for_each_entry(chain, &table->chains, list)
nf_tables_commit_chain(net, chain);
@@ -11091,27 +11131,16 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)
break;
case NFT_MSG_NEWSETELEM:
te = nft_trans_container_elem(trans);
-
nft_trans_elems_add(&ctx, te);
-
- if (te->set->ops->commit &&
- list_empty(&te->set->pending_update)) {
- list_add_tail(&te->set->pending_update,
- &set_update_list);
- }
nft_trans_destroy(trans);
break;
case NFT_MSG_DELSETELEM:
case NFT_MSG_DESTROYSETELEM:
te = nft_trans_container_elem(trans);
-
- nft_trans_elems_remove(&ctx, te);
-
- if (te->set->ops->commit &&
- list_empty(&te->set->pending_update)) {
- list_add_tail(&te->set->pending_update,
- &set_update_list);
- }
+ if (te->set->ops->commit)
+ nft_trans_elems_remove_notify(&ctx, te);
+ else
+ nft_trans_elems_remove(&ctx, te);
break;
case NFT_MSG_NEWOBJ:
if (nft_trans_obj_update(trans)) {
@@ -11180,8 +11209,6 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)
}
}
- nft_set_commit_update(&set_update_list);
-
nft_commit_notify(net, NETLINK_CB(skb).portid);
nf_tables_gen_notify(net, skb, NFT_MSG_NEWGEN);
nf_tables_commit_audit_log(&adl, nft_base_seq(net));
@@ -11247,11 +11274,11 @@ static void nf_tables_abort_release(struct nft_trans *trans)
kfree(trans);
}
-static void nft_set_abort_update(struct list_head *set_update_list)
+static void nft_set_abort_update(struct nftables_pernet *nft_net)
{
struct nft_set *set, *next;
- list_for_each_entry_safe(set, next, set_update_list, pending_update) {
+ list_for_each_entry_safe(set, next, &nft_net->set_update_list, pending_update) {
list_del_init(&set->pending_update);
if (!set->ops->abort)
@@ -11386,33 +11413,22 @@ static int __nf_tables_abort(struct net *net, enum nfnl_abort_action action)
nft_trans_destroy(trans);
break;
case NFT_MSG_NEWSETELEM:
+ te = nft_trans_container_elem(trans);
if (nft_trans_elem_set_bound(trans)) {
+ list_del_init(&te->set->pending_update);
nft_trans_destroy(trans);
break;
}
- te = nft_trans_container_elem(trans);
if (!nft_trans_elems_new_abort(&ctx, te)) {
nft_trans_destroy(trans);
break;
}
-
- if (te->set->ops->abort &&
- list_empty(&te->set->pending_update)) {
- list_add_tail(&te->set->pending_update,
- &set_update_list);
- }
break;
case NFT_MSG_DELSETELEM:
case NFT_MSG_DESTROYSETELEM:
te = nft_trans_container_elem(trans);
nft_trans_elems_destroy_abort(&ctx, te);
-
- if (te->set->ops->abort &&
- list_empty(&te->set->pending_update)) {
- list_add_tail(&te->set->pending_update,
- &set_update_list);
- }
nft_trans_destroy(trans);
break;
case NFT_MSG_NEWOBJ:
@@ -11458,7 +11474,7 @@ static int __nf_tables_abort(struct net *net, enum nfnl_abort_action action)
WARN_ON_ONCE(!list_empty(&nft_net->commit_set_list));
- nft_set_abort_update(&set_update_list);
+ nft_set_abort_update(nft_net);
synchronize_rcu();
@@ -12142,6 +12158,7 @@ static int __net_init nf_tables_init_net(struct net *net)
INIT_LIST_HEAD(&nft_net->binding_list);
INIT_LIST_HEAD(&nft_net->module_list);
INIT_LIST_HEAD(&nft_net->notify_list);
+ INIT_LIST_HEAD(&nft_net->set_update_list);
mutex_init(&nft_net->commit_mutex);
net->nft.base_seq = 1;
nft_net->gc_seq = 0;
@@ -12186,6 +12203,7 @@ static void __net_exit nf_tables_exit_net(struct net *net)
WARN_ON_ONCE(!list_empty(&nft_net->module_list));
WARN_ON_ONCE(!list_empty(&nft_net->notify_list));
WARN_ON_ONCE(!list_empty(&nft_net->destroy_list));
+ WARN_ON_ONCE(!list_empty(&nft_net->set_update_list));
}
static void nf_tables_exit_batch(struct list_head *net_exit_list)
|
| 3/2 | 2026/08/12 23:25 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 4780 output: 37 thoughts: 417 Thoughts: **My Assessment of the nf_tables Patch** Okay, so I'm looking at a patch that dives pretty deep into the nf_tables core, specifically around how set elements are handled in netfilter. The changes focus on `net/netfilter/nf_tables_api.c` and `include/net/netfilter/nf_tables.h`. It seems we're introducing a `set_update_list` within the `nftables_pernet` structure. This is significant, as it indicates a shift in how set updates are managed during transactions. The patch modifies several crucial functions: `nft_trans_commit_list_add_elem` to populate this new `set_update_list`. Also, we see changes in `nft_set_commit_update`, which now iterates over *both* the `commit_list` *and* the new `set_update_list`. Crucially, `nf_tables_commit` is being altered to call `nft_set_commit_update` *before* the rules become visible. This is a fundamental change in commit order. Finally, `__nf_tables_abort` now uses `nft_set_abort_update`, which probably undoes these changes. Functionally, this impacts the way set elements are committed and aborted within nf_tables. The change is definitely reachable, and given its core nature, this is a prime candidate for fuzzing. I need to figure out which configurations are relevant – `CONFIG_NF_TABLES` seems like the obvious starting point. Now, let's identify the key symbols modified by the patch: `nft_trans_commit_list_add_elem`, `nft_trans_elems_remove`, `nft_trans_elems_remove_notify`, `nft_set_commit_update`, `nf_tables_commit`, `nft_set_abort_update`, `__nf_tables_abort`, `nf_tables_init_net`, and `nf_tables_exit_net`. I need to confirm whether `nf_tables_commit` is exported or not, because it seems odd that it would be static. I need to make sure. I'll check. |
| 4/2 | 2026/08/12 23:25 | tool | grepper |
0mArgs:{
"Expression": "nf_tables_commit",
"PathPrefix": "net/netfilter/nf_tables_api.c"
}Results: {
"Output": "net/netfilter/nf_tables_api.c=10305=EXPORT_SYMBOL_GPL(nf_tables_trans_destroy_flush_work);\nnet/netfilter/nf_tables_api.c-10306-\nnet/netfilter/nf_tables_api.c:10307:static int nf_tables_commit_chain_prepare(struct net *net, struct nft_chain *chain)\nnet/netfilter/nf_tables_api.c-10308-{\n--\nnet/netfilter/nf_tables_api.c-10381-\nnet/netfilter/nf_tables_api.c:10382:static void nf_tables_commit_chain_prepare_cancel(struct net *net)\nnet/netfilter/nf_tables_api.c-10383-{\n--\nnet/netfilter/nf_tables_api.c-10397-\nnet/netfilter/nf_tables_api.c:10398:static void __nf_tables_commit_chain_free_rules(struct rcu_head *h)\nnet/netfilter/nf_tables_api.c-10399-{\n--\nnet/netfilter/nf_tables_api.c-10404-\nnet/netfilter/nf_tables_api.c:10405:static void nf_tables_commit_chain_free_rules_old(struct nft_rule_blob *blob)\nnet/netfilter/nf_tables_api.c-10406-{\n--\nnet/netfilter/nf_tables_api.c-10412-\nnet/netfilter/nf_tables_api.c:10413:\tcall_rcu(\u0026last-\u003eh, __nf_tables_commit_chain_free_rules);\nnet/netfilter/nf_tables_api.c-10414-}\nnet/netfilter/nf_tables_api.c-10415-\nnet/netfilter/nf_tables_api.c:10416:static void nf_tables_commit_chain(struct net *net, struct nft_chain *chain)\nnet/netfilter/nf_tables_api.c-10417-{\n--\nnet/netfilter/nf_tables_api.c-10438-\t\t\trcu_assign_pointer(chain-\u003eblob_gen_1, g0);\nnet/netfilter/nf_tables_api.c:10439:\t\t\tnf_tables_commit_chain_free_rules_old(g1);\nnet/netfilter/nf_tables_api.c-10440-\t\t} else {\nnet/netfilter/nf_tables_api.c-10441-\t\t\trcu_assign_pointer(chain-\u003eblob_gen_0, g1);\nnet/netfilter/nf_tables_api.c:10442:\t\t\tnf_tables_commit_chain_free_rules_old(g0);\nnet/netfilter/nf_tables_api.c-10443-\t\t}\n--\nnet/netfilter/nf_tables_api.c-10458-\tif (next_genbit)\nnet/netfilter/nf_tables_api.c:10459:\t\tnf_tables_commit_chain_free_rules_old(g1);\nnet/netfilter/nf_tables_api.c-10460-\telse\nnet/netfilter/nf_tables_api.c:10461:\t\tnf_tables_commit_chain_free_rules_old(g0);\nnet/netfilter/nf_tables_api.c-10462-}\n--\nnet/netfilter/nf_tables_api.c=10711=static void nf_tables_module_autoload_cleanup(struct net *net)\n--\nnet/netfilter/nf_tables_api.c-10723-\nnet/netfilter/nf_tables_api.c:10724:static void nf_tables_commit_release(struct net *net)\nnet/netfilter/nf_tables_api.c-10725-{\n--\nnet/netfilter/nf_tables_api.c=10758=static void nft_commit_notify(struct net *net, u32 portid)\n--\nnet/netfilter/nf_tables_api.c-10793-\nnet/netfilter/nf_tables_api.c:10794:static int nf_tables_commit_audit_alloc(struct list_head *adl,\nnet/netfilter/nf_tables_api.c-10795-\t\t\t\t\tstruct nft_table *table)\n--\nnet/netfilter/nf_tables_api.c-10810-\nnet/netfilter/nf_tables_api.c:10811:static void nf_tables_commit_audit_free(struct list_head *adl)\nnet/netfilter/nf_tables_api.c-10812-{\n--\nnet/netfilter/nf_tables_api.c-10823- */\nnet/netfilter/nf_tables_api.c:10824:static unsigned int nf_tables_commit_audit_entrycount(const struct nft_trans *trans)\nnet/netfilter/nf_tables_api.c-10825-{\n--\nnet/netfilter/nf_tables_api.c-10834-\nnet/netfilter/nf_tables_api.c:10835:static void nf_tables_commit_audit_collect(struct list_head *adl,\nnet/netfilter/nf_tables_api.c-10836-\t\t\t\t\t const struct nft_trans *trans, u32 op)\n--\nnet/netfilter/nf_tables_api.c-10847-found:\nnet/netfilter/nf_tables_api.c:10848:\tadp-\u003eentries += nf_tables_commit_audit_entrycount(trans);\nnet/netfilter/nf_tables_api.c-10849-\tif (!adp-\u003eop || adp-\u003eop \u003e op)\n--\nnet/netfilter/nf_tables_api.c-10854-\nnet/netfilter/nf_tables_api.c:10855:static void nf_tables_commit_audit_log(struct list_head *adl, u32 generation)\nnet/netfilter/nf_tables_api.c-10856-{\n--\nnet/netfilter/nf_tables_api.c=10915=static void nft_gc_seq_end(struct nftables_pernet *nft_net, unsigned int gc_seq)\n--\nnet/netfilter/nf_tables_api.c-10919-\nnet/netfilter/nf_tables_api.c:10920:static int nf_tables_commit(struct net *net, struct sk_buff *skb)\nnet/netfilter/nf_tables_api.c-10921-{\n--\nnet/netfilter/nf_tables_api.c-10980-\nnet/netfilter/nf_tables_api.c:10981:\t\tret = nf_tables_commit_audit_alloc(\u0026adl, table);\nnet/netfilter/nf_tables_api.c-10982-\t\tif (ret) {\nnet/netfilter/nf_tables_api.c:10983:\t\t\tnf_tables_commit_chain_prepare_cancel(net);\nnet/netfilter/nf_tables_api.c:10984:\t\t\tnf_tables_commit_audit_free(\u0026adl);\nnet/netfilter/nf_tables_api.c-10985-\t\t\treturn ret;\n--\nnet/netfilter/nf_tables_api.c-10990-\nnet/netfilter/nf_tables_api.c:10991:\t\t\tret = nf_tables_commit_chain_prepare(net, chain);\nnet/netfilter/nf_tables_api.c-10992-\t\t\tif (ret \u003c 0) {\nnet/netfilter/nf_tables_api.c:10993:\t\t\t\tnf_tables_commit_chain_prepare_cancel(net);\nnet/netfilter/nf_tables_api.c:10994:\t\t\t\tnf_tables_commit_audit_free(\u0026adl);\nnet/netfilter/nf_tables_api.c-10995-\t\t\t\treturn ret;\n--\nnet/netfilter/nf_tables_api.c-11004-\t\tlist_for_each_entry(chain, \u0026table-\u003echains, list)\nnet/netfilter/nf_tables_api.c:11005:\t\t\tnf_tables_commit_chain(net, chain);\nnet/netfilter/nf_tables_api.c-11006-\t}\n--\nnet/netfilter/nf_tables_api.c-11028-\nnet/netfilter/nf_tables_api.c:11029:\t\tnf_tables_commit_audit_collect(\u0026adl, trans, trans-\u003emsg_type);\nnet/netfilter/nf_tables_api.c-11030-\t\tswitch (trans-\u003emsg_type) {\n--\nnet/netfilter/nf_tables_api.c-11213-\tnf_tables_gen_notify(net, skb, NFT_MSG_NEWGEN);\nnet/netfilter/nf_tables_api.c:11214:\tnf_tables_commit_audit_log(\u0026adl, nft_base_seq(net));\nnet/netfilter/nf_tables_api.c-11215-\n--\nnet/netfilter/nf_tables_api.c-11217-\tnft_net-\u003evalidate_state = NFT_VALIDATE_SKIP;\nnet/netfilter/nf_tables_api.c:11218:\tnf_tables_commit_release(net);\nnet/netfilter/nf_tables_api.c-11219-\n--\nnet/netfilter/nf_tables_api.c=11539=static const struct nfnetlink_subsystem nf_tables_subsys = {\n--\nnet/netfilter/nf_tables_api.c-11543-\t.cb\t\t= nf_tables_cb,\nnet/netfilter/nf_tables_api.c:11544:\t.commit\t\t= nf_tables_commit,\nnet/netfilter/nf_tables_api.c-11545-\t.abort\t\t= nf_tables_abort,\n"
} |
| 5/2 | 2026/08/12 23:25 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 8301 output: 38 thoughts: 33 Thoughts: Okay, here's my take on those thoughts, tailored for an expert audience: **Diving into Netfilter Table Operations** Right, so I see `nf_tables_commit` is crucial within `nf_tables_subsys`. My mind immediately jumps to how this ties into error handling and rollback mechanisms. The next logical step is to understand the abort process. I need to refresh my understanding of how a failed commit is handled, and what state the tables are left in. Time to delve into `__nf_tables_abort`. I'm curious about the specific mechanisms involved in rolling back the changes and ensuring a consistent state within the netfilter framework. I need to understand what resources are released and what safeguards are in place. The devil's in the details with these complex systems, so I'll probably be tracing execution flow and checking invariants. |
| 6/2 | 2026/08/12 23:25 | tool | grepper |
0mArgs:{
"Expression": "__nf_tables_abort",
"PathPrefix": "net/netfilter/nf_tables_api.c"
}Results: {
"Output": "net/netfilter/nf_tables_api.c=11277=static void nft_set_abort_update(struct nftables_pernet *nft_net)\n--\nnet/netfilter/nf_tables_api.c-11290-\nnet/netfilter/nf_tables_api.c:11291:static int __nf_tables_abort(struct net *net, enum nfnl_abort_action action)\nnet/netfilter/nf_tables_api.c-11292-{\n--\nnet/netfilter/nf_tables_api.c=11490=static int nf_tables_abort(struct net *net, struct sk_buff *skb,\n--\nnet/netfilter/nf_tables_api.c-11497-\tgc_seq = nft_gc_seq_begin(nft_net);\nnet/netfilter/nf_tables_api.c:11498:\tret = __nf_tables_abort(net, action);\nnet/netfilter/nf_tables_api.c-11499-\tnft_gc_seq_end(nft_net, gc_seq);\n"
} |
| 7/2 | 2026/08/12 23:25 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 8842 output: 32 thoughts: 461 Thoughts: **Analyzing Netfilter Tables for Focus Symbols** Okay, so I'm looking at this patch and trying to figure out the right focus symbols. The instructions are pretty clear: prefer non-static, non-inlined API entrypoints. That seems to be the key. Let's see... I've got `nf_tables_commit` and `nf_tables_abort` as the initial entry points, and yes, `nf_tables_commit` *is* static, but it's assigned to a function pointer, `.commit`, in `nfnetlink_subsystem`. That immediately makes it interesting, right? Static functions are usually inlined, losing distinct symbols, but a *large* static function assigned to a function pointer, like `nf_tables_commit`, it *definitely* isn't inlined, so it should be fine to target. I see that `nf_tables_trans_destroy_flush_work` is exported but not modified, and the patch touches several functions: `nft_trans_commit_list_add_elem`, `nft_trans_elems_remove`, `nft_trans_elems_remove_notify`, `nft_set_commit_update`, `nft_set_abort_update`, `__nf_tables_abort`, `nf_tables_init_net`, and `nf_tables_exit_net`. So the patch modifies a handful of functions, some of which may be inlined or static, but the main point is to identify the best, non-inlined entry points. I remember the instructions. We want those non-static, non-inlined API entrypoints. So, `nf_tables_commit` and `nf_tables_abort`, because they are assigned to function pointers, they have distinct symbols, and are not inlined, which makes them ideal. I paused to check if I am dealing with a hot-path function, but it's not a packet processing hot-path. It's a netlink commit function used for netfilter rule configuration, which makes sense. I suspect that `nft_set_commit_update` *might* be inlined, so I'll probably list `nf_tables_commit` and `nf_tables_abort` to be safe. That's good enough for now. Time to check the Kconfig for `NF_TABLES` to make sure the module is enabled. |
| 8/2 | 2026/08/12 23:25 | tool | grepper |
0mArgs:{
"Expression": "config NF_TABLES",
"PathPrefix": "net/netfilter/Kconfig"
}Results: {
"Output": "net/netfilter/Kconfig=453=endif # NF_CONNTRACK\nnet/netfilter/Kconfig-454-\nnet/netfilter/Kconfig:455:config NF_TABLES\nnet/netfilter/Kconfig-456-\tselect NETFILTER_NETLINK\n--\nnet/netfilter/Kconfig=471=if NF_TABLES\nnet/netfilter/Kconfig:472:config NF_TABLES_INET\nnet/netfilter/Kconfig-473-\tdepends on IPV6\n--\nnet/netfilter/Kconfig-479-\nnet/netfilter/Kconfig:480:config NF_TABLES_NETDEV\nnet/netfilter/Kconfig-481-\tbool \"Netfilter nf_tables netdev tables support\"\n"
} |
| 9/2 | 2026/08/12 23:25 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 10047 output: 31 thoughts: 57 Thoughts: Okay, here's my take on those thoughts, framed as my own mental processing: **Analyzing the NF_TABLES Configuration** Alright, so `NF_TABLES` is the key configuration variable here. Seems pretty straightforward – that's our starting point. Now, let's see if there are any related configs we need to consider. I always like to get a complete picture. The patch is touching `net/netfilter/nf_tables_api.c`. Right, so this is where the core API logic for `nf_tables` resides, making the file a prime target. And, of course, that file is *only* compiled into the kernel when `CONFIG_NF_TABLES` is turned on. Obvious, but important to cement the conditional compilation flow. Got it. |
| 10/2 | 2026/08/12 23:25 | tool | grepper |
0mArgs:{
"Expression": "nf_tables_api",
"PathPrefix": "net/netfilter/Makefile"
}Results: {
"Output": "net/netfilter/Makefile=84=obj-$(CONFIG_NF_DUP_NETDEV)\t+= nf_dup_netdev.o\n--\nnet/netfilter/Makefile-86-# nf_tables\nnet/netfilter/Makefile:87:nf_tables-objs := nf_tables_core.o nf_tables_api.o nft_chain_filter.o \\\nnet/netfilter/Makefile-88-\t\t nf_tables_trace.o nft_immediate.o nft_cmp.o nft_range.o \\\n"
} |
| 11/2 | 2026/08/12 23:25 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 10441 output: 39 thoughts: 137 Thoughts: Okay, here's my breakdown of what I'm looking at, from my perspective. Let's see if this aligns with my current understanding of the subject matter: **Navigating the `nf_tables` Codebase** Alright, so the core question is about `nf_tables-objs`, and I'm pretty certain that the build process includes it if `CONFIG_NF_TABLES` is turned on. Confirmation of the obvious is always a good starting point. Now, I need to get my head around the crucial commit and abort functions. Let's make sure I've got the basics covered there, `nf_tables_commit` and `nf_tables_abort`. These are the spine of any transaction system. Are there any other high-level symbols which need to be accounted for? I see `nft_trans_commit_list_add_elem` getting called from `nft_add_set_elem` and `nft_del_setelem`. That makes sense; these functions are likely involved in handling transaction lists. Following that logic, I recall that `nft_add_set_elem` is, in turn, called by `nf_tables_newsetelem`, and similarly, `nft_del_setelem` is called from `nf_tables_delsetelem`. These should also be key functions I should keep in mind. I know what these functions do, but it's important to make sure they're included in my mental model of this architecture. They are good focus points. |
| 12/2 | 2026/08/12 23:26 | tool | grepper |
0mArgs:{
"Expression": "nf_tables_newsetelem",
"PathPrefix": "net/netfilter/nf_tables_api.c"
}Results: {
"Output": "net/netfilter/nf_tables_api.c=7267=static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set,\n--\nnet/netfilter/nf_tables_api.c-7680-\nnet/netfilter/nf_tables_api.c:7681:static int nf_tables_newsetelem(struct sk_buff *skb,\nnet/netfilter/nf_tables_api.c-7682-\t\t\t\tconst struct nfnl_info *info,\n--\nnet/netfilter/nf_tables_api.c=9942=static const struct nfnl_callback nf_tables_cb[NFT_MSG_MAX] = {\n--\nnet/netfilter/nf_tables_api.c-10045-\t[NFT_MSG_NEWSETELEM] = {\nnet/netfilter/nf_tables_api.c:10046:\t\t.call\t\t= nf_tables_newsetelem,\nnet/netfilter/nf_tables_api.c-10047-\t\t.type\t\t= NFNL_CB_BATCH,\n"
} |
| 13/2 | 2026/08/12 23:26 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 11226 output: 39 thoughts: 37 Thoughts: Here's a summary of my thoughts, presented as if I were the one thinking them: **Initial Assessment: Network Filtering Set Operations** Alright, let's zero in on this. I'm seeing `nf_tables_newsetelem` and `nf_tables_delsetelem`. Immediately, those jump out as the core entry points for the addition and removal of elements within a set, in the context of `nf_tables`. That's precisely the kind of low-level detail I need to understand the fundamental mechanics of how these network filtering tables are manipulated at the set level. Excellent focus symbols to start digging into. They offer a direct path to understanding the core functions. |
| 14/2 | 2026/08/12 23:26 | tool | grepper |
0mArgs:{
"Expression": "nf_tables_delsetelem",
"PathPrefix": "net/netfilter/nf_tables_api.c"
}Results: {
"Output": "net/netfilter/nf_tables_api.c=8004=static int nft_set_flush(struct nft_ctx *ctx, struct nft_set *set, u8 genmask)\n--\nnet/netfilter/nf_tables_api.c-8021-\nnet/netfilter/nf_tables_api.c:8022:static int nf_tables_delsetelem(struct sk_buff *skb,\nnet/netfilter/nf_tables_api.c-8023-\t\t\t\tconst struct nfnl_info *info,\n--\nnet/netfilter/nf_tables_api.c=9942=static const struct nfnl_callback nf_tables_cb[NFT_MSG_MAX] = {\n--\nnet/netfilter/nf_tables_api.c-10063-\t[NFT_MSG_DELSETELEM] = {\nnet/netfilter/nf_tables_api.c:10064:\t\t.call\t\t= nf_tables_delsetelem,\nnet/netfilter/nf_tables_api.c-10065-\t\t.type\t\t= NFNL_CB_BATCH,\n--\nnet/netfilter/nf_tables_api.c-10069-\t[NFT_MSG_DESTROYSETELEM] = {\nnet/netfilter/nf_tables_api.c:10070:\t\t.call\t\t= nf_tables_delsetelem,\nnet/netfilter/nf_tables_api.c-10071-\t\t.type\t\t= NFNL_CB_BATCH,\n"
} |
| 15/2 | 2026/08/12 23:26 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 11837 output: 30 thoughts: 94 Thoughts: **My Netfilter Focus** Okay, so I need to zero in on these symbols: `nf_tables_commit`, `nf_tables_abort`, `nf_tables_newsetelem`, and `nf_tables_delsetelem`. They're all Netlink callbacks, which means they aren't inlined and are definite API entrypoints, perfect targets for deeper analysis. Before I go further, I should verify the configuration dependencies. Let's make sure `NF_TABLES` depends on `NETFILTER`. Gotta cover all the bases to avoid any unexpected issues down the line. |
| 16/2 | 2026/08/12 23:26 | tool | grepper |
0mArgs:{
"Expression": "config NETFILTER",
"PathPrefix": "net/netfilter/Kconfig"
}Results: {
"Output": "net/netfilter/Kconfig=2=menu \"Core Netfilter Configuration\"\n--\nnet/netfilter/Kconfig-4-\nnet/netfilter/Kconfig:5:config NETFILTER_INGRESS\nnet/netfilter/Kconfig-6-\tbool \"Netfilter ingress support\"\n--\nnet/netfilter/Kconfig-12-\nnet/netfilter/Kconfig:13:config NETFILTER_EGRESS\nnet/netfilter/Kconfig-14-\tbool \"Netfilter egress support\"\n--\nnet/netfilter/Kconfig-20-\nnet/netfilter/Kconfig:21:config NETFILTER_SKIP_EGRESS\nnet/netfilter/Kconfig-22-\tdef_bool NETFILTER_EGRESS \u0026\u0026 (NET_CLS_ACT || IFB)\nnet/netfilter/Kconfig-23-\nnet/netfilter/Kconfig:24:config NETFILTER_NETLINK\nnet/netfilter/Kconfig-25-\tbool\nnet/netfilter/Kconfig-26-\nnet/netfilter/Kconfig:27:config NETFILTER_FAMILY_BRIDGE\nnet/netfilter/Kconfig-28-\tbool\nnet/netfilter/Kconfig-29-\nnet/netfilter/Kconfig:30:config NETFILTER_FAMILY_ARP\nnet/netfilter/Kconfig-31-\tbool\nnet/netfilter/Kconfig-32-\nnet/netfilter/Kconfig:33:config NETFILTER_BPF_LINK\nnet/netfilter/Kconfig-34-\tdef_bool BPF_SYSCALL\nnet/netfilter/Kconfig-35-\nnet/netfilter/Kconfig:36:config NETFILTER_NETLINK_HOOK\nnet/netfilter/Kconfig-37-\ttristate \"Netfilter base hook dump support\"\n--\nnet/netfilter/Kconfig-45-\nnet/netfilter/Kconfig:46:config NETFILTER_NETLINK_ACCT\nnet/netfilter/Kconfig-47-\ttristate \"Netfilter NFACCT over NFNETLINK interface\"\n--\nnet/netfilter/Kconfig-53-\nnet/netfilter/Kconfig:54:config NETFILTER_NETLINK_QUEUE\nnet/netfilter/Kconfig-55-\ttristate \"Netfilter NFQUEUE over NFNETLINK interface\"\n--\nnet/netfilter/Kconfig-61-\nnet/netfilter/Kconfig:62:config NETFILTER_NETLINK_LOG\nnet/netfilter/Kconfig-63-\ttristate \"Netfilter LOG over NFNETLINK interface\"\n--\nnet/netfilter/Kconfig-73-\nnet/netfilter/Kconfig:74:config NETFILTER_NETLINK_OSF\nnet/netfilter/Kconfig-75-\ttristate \"Netfilter OSF over NFNETLINK interface\"\n--\nnet/netfilter/Kconfig=110=if NF_CONNTRACK\nnet/netfilter/Kconfig:111:config NETFILTER_CONNCOUNT\nnet/netfilter/Kconfig-112-\ttristate\n--\nnet/netfilter/Kconfig=385=config NF_CT_NETLINK_HELPER\n--\nnet/netfilter/Kconfig-397-\nnet/netfilter/Kconfig:398:config NETFILTER_NETLINK_GLUE_CT\nnet/netfilter/Kconfig-399-\tbool \"NFQUEUE and NFLOG integration with Connection Tracking\"\n--\nnet/netfilter/Kconfig=447=config NF_NAT_OVS\n--\nnet/netfilter/Kconfig-449-\nnet/netfilter/Kconfig:450:config NETFILTER_SYNPROXY\nnet/netfilter/Kconfig-451-\ttristate\n--\nnet/netfilter/Kconfig=721=config NF_FLOW_TABLE_PROCFS\n--\nnet/netfilter/Kconfig-728-\nnet/netfilter/Kconfig:729:config NETFILTER_XTABLES\nnet/netfilter/Kconfig-730-\ttristate \"Netfilter Xtables support (required for ip_tables)\"\n--\nnet/netfilter/Kconfig=736=if NETFILTER_XTABLES\nnet/netfilter/Kconfig-737-\nnet/netfilter/Kconfig:738:config NETFILTER_XTABLES_COMPAT\nnet/netfilter/Kconfig-739-\tbool \"Netfilter Xtables 32bit support\"\n--\nnet/netfilter/Kconfig-746-\nnet/netfilter/Kconfig:747:config NETFILTER_XTABLES_LEGACY\nnet/netfilter/Kconfig-748-\tbool \"Netfilter legacy tables support\"\n--\nnet/netfilter/Kconfig=757=comment \"Xtables combined modules\"\nnet/netfilter/Kconfig-758-\nnet/netfilter/Kconfig:759:config NETFILTER_XT_MARK\nnet/netfilter/Kconfig-760-\ttristate 'nfmark target and match support'\n--\nnet/netfilter/Kconfig-772-\nnet/netfilter/Kconfig:773:config NETFILTER_XT_CONNMARK\nnet/netfilter/Kconfig-774-\ttristate 'ctmark target and match support'\n--\nnet/netfilter/Kconfig-784-\nnet/netfilter/Kconfig:785:config NETFILTER_XT_SET\nnet/netfilter/Kconfig-786-\ttristate 'set target and match support'\n--\nnet/netfilter/Kconfig=799=comment \"Xtables targets\"\nnet/netfilter/Kconfig-800-\nnet/netfilter/Kconfig:801:config NETFILTER_XT_TARGET_AUDIT\nnet/netfilter/Kconfig-802-\ttristate \"AUDIT target support\"\n--\nnet/netfilter/Kconfig-810-\nnet/netfilter/Kconfig:811:config NETFILTER_XT_TARGET_CHECKSUM\nnet/netfilter/Kconfig-812-\ttristate \"CHECKSUM target support\"\n--\nnet/netfilter/Kconfig-826-\nnet/netfilter/Kconfig:827:config NETFILTER_XT_TARGET_CLASSIFY\nnet/netfilter/Kconfig-828-\ttristate '\"CLASSIFY\" target support'\n--\nnet/netfilter/Kconfig-838-\nnet/netfilter/Kconfig:839:config NETFILTER_XT_TARGET_CONNMARK\nnet/netfilter/Kconfig-840-\ttristate '\"CONNMARK\" target support'\n--\nnet/netfilter/Kconfig-848-\nnet/netfilter/Kconfig:849:config NETFILTER_XT_TARGET_CONNSECMARK\nnet/netfilter/Kconfig-850-\ttristate '\"CONNSECMARK\" target support'\n--\nnet/netfilter/Kconfig-860-\nnet/netfilter/Kconfig:861:config NETFILTER_XT_TARGET_CT\nnet/netfilter/Kconfig-862-\ttristate '\"CT\" target support'\n--\nnet/netfilter/Kconfig-872-\nnet/netfilter/Kconfig:873:config NETFILTER_XT_TARGET_DSCP\nnet/netfilter/Kconfig-874-\ttristate '\"DSCP\" and \"TOS\" target support'\n--\nnet/netfilter/Kconfig-888-\nnet/netfilter/Kconfig:889:config NETFILTER_XT_TARGET_HL\nnet/netfilter/Kconfig-890-\ttristate '\"HL\" hoplimit target support'\n--\nnet/netfilter/Kconfig-903-\nnet/netfilter/Kconfig:904:config NETFILTER_XT_TARGET_HMARK\nnet/netfilter/Kconfig-905-\ttristate '\"HMARK\" target support'\n--\nnet/netfilter/Kconfig-917-\nnet/netfilter/Kconfig:918:config NETFILTER_XT_TARGET_IDLETIMER\nnet/netfilter/Kconfig-919-\ttristate \"IDLETIMER target support\"\n--\nnet/netfilter/Kconfig-929-\nnet/netfilter/Kconfig:930:config NETFILTER_XT_TARGET_LED\nnet/netfilter/Kconfig-931-\ttristate '\"LED\" target support'\n--\nnet/netfilter/Kconfig-953-\nnet/netfilter/Kconfig:954:config NETFILTER_XT_TARGET_LOG\nnet/netfilter/Kconfig-955-\ttristate \"LOG target support\"\n--\nnet/netfilter/Kconfig-964-\nnet/netfilter/Kconfig:965:config NETFILTER_XT_TARGET_MARK\nnet/netfilter/Kconfig-966-\ttristate '\"MARK\" target support'\n--\nnet/netfilter/Kconfig-973-\nnet/netfilter/Kconfig:974:config NETFILTER_XT_NAT\nnet/netfilter/Kconfig-975-\ttristate '\"SNAT and DNAT\" targets support'\n--\nnet/netfilter/Kconfig-981-\nnet/netfilter/Kconfig:982:config NETFILTER_XT_TARGET_NETMAP\nnet/netfilter/Kconfig-983-\ttristate '\"NETMAP\" target support'\n--\nnet/netfilter/Kconfig-991-\nnet/netfilter/Kconfig:992:config NETFILTER_XT_TARGET_NFLOG\nnet/netfilter/Kconfig-993-\ttristate '\"NFLOG\" target support'\n--\nnet/netfilter/Kconfig-1001-\nnet/netfilter/Kconfig:1002:config NETFILTER_XT_TARGET_NFQUEUE\nnet/netfilter/Kconfig-1003-\ttristate '\"NFQUEUE\" target Support'\n--\nnet/netfilter/Kconfig-1013-\nnet/netfilter/Kconfig:1014:config NETFILTER_XT_TARGET_NOTRACK\nnet/netfilter/Kconfig-1015-\ttristate '\"NOTRACK\" target support (DEPRECATED)'\n--\nnet/netfilter/Kconfig-1020-\nnet/netfilter/Kconfig:1021:config NETFILTER_XT_TARGET_RATEEST\nnet/netfilter/Kconfig-1022-\ttristate '\"RATEEST\" target support'\n--\nnet/netfilter/Kconfig-1030-\nnet/netfilter/Kconfig:1031:config NETFILTER_XT_TARGET_REDIRECT\nnet/netfilter/Kconfig-1032-\ttristate \"REDIRECT target support\"\n--\nnet/netfilter/Kconfig-1042-\nnet/netfilter/Kconfig:1043:config NETFILTER_XT_TARGET_MASQUERADE\nnet/netfilter/Kconfig-1044-\ttristate \"MASQUERADE target support\"\n--\nnet/netfilter/Kconfig-1056-\nnet/netfilter/Kconfig:1057:config NETFILTER_XT_TARGET_TEE\nnet/netfilter/Kconfig-1058-\ttristate '\"TEE\" - packet cloning to alternate destination'\n--\nnet/netfilter/Kconfig-1067-\nnet/netfilter/Kconfig:1068:config NETFILTER_XT_TARGET_TPROXY\nnet/netfilter/Kconfig-1069-\ttristate '\"TPROXY\" target transparent proxying support'\n--\nnet/netfilter/Kconfig-1088-\nnet/netfilter/Kconfig:1089:config NETFILTER_XT_TARGET_TRACE\nnet/netfilter/Kconfig-1090-\ttristate '\"TRACE\" target support'\n--\nnet/netfilter/Kconfig-1100-\nnet/netfilter/Kconfig:1101:config NETFILTER_XT_TARGET_SECMARK\nnet/netfilter/Kconfig-1102-\ttristate '\"SECMARK\" target support'\n--\nnet/netfilter/Kconfig-1110-\nnet/netfilter/Kconfig:1111:config NETFILTER_XT_TARGET_TCPMSS\nnet/netfilter/Kconfig-1112-\ttristate '\"TCPMSS\" target support'\n--\nnet/netfilter/Kconfig-1136-\nnet/netfilter/Kconfig:1137:config NETFILTER_XT_TARGET_TCPOPTSTRIP\nnet/netfilter/Kconfig-1138-\ttristate '\"TCPOPTSTRIP\" target support'\n--\nnet/netfilter/Kconfig=1147=comment \"Xtables matches\"\nnet/netfilter/Kconfig-1148-\nnet/netfilter/Kconfig:1149:config NETFILTER_XT_MATCH_ADDRTYPE\nnet/netfilter/Kconfig-1150-\ttristate '\"addrtype\" address type match support'\n--\nnet/netfilter/Kconfig-1158-\nnet/netfilter/Kconfig:1159:config NETFILTER_XT_MATCH_BPF\nnet/netfilter/Kconfig-1160-\ttristate '\"bpf\" match support'\n--\nnet/netfilter/Kconfig-1167-\nnet/netfilter/Kconfig:1168:config NETFILTER_XT_MATCH_CGROUP\nnet/netfilter/Kconfig-1169-\ttristate '\"control group\" match support'\n--\nnet/netfilter/Kconfig-1177-\nnet/netfilter/Kconfig:1178:config NETFILTER_XT_MATCH_CLUSTER\nnet/netfilter/Kconfig-1179-\ttristate '\"cluster\" match support'\n--\nnet/netfilter/Kconfig-1193-\nnet/netfilter/Kconfig:1194:config NETFILTER_XT_MATCH_COMMENT\nnet/netfilter/Kconfig-1195-\ttristate '\"comment\" match support'\n--\nnet/netfilter/Kconfig-1203-\nnet/netfilter/Kconfig:1204:config NETFILTER_XT_MATCH_CONNBYTES\nnet/netfilter/Kconfig-1205-\ttristate '\"connbytes\" per-connection counter match support'\n--\nnet/netfilter/Kconfig-1214-\nnet/netfilter/Kconfig:1215:config NETFILTER_XT_MATCH_CONNLABEL\nnet/netfilter/Kconfig-1216-\ttristate '\"connlabel\" match support'\n--\nnet/netfilter/Kconfig-1227-\nnet/netfilter/Kconfig:1228:config NETFILTER_XT_MATCH_CONNLIMIT\nnet/netfilter/Kconfig-1229-\ttristate '\"connlimit\" match support'\n--\nnet/netfilter/Kconfig-1236-\nnet/netfilter/Kconfig:1237:config NETFILTER_XT_MATCH_CONNMARK\nnet/netfilter/Kconfig-1238-\ttristate '\"connmark\" connection mark match support'\n--\nnet/netfilter/Kconfig-1246-\nnet/netfilter/Kconfig:1247:config NETFILTER_XT_MATCH_CONNTRACK\nnet/netfilter/Kconfig-1248-\ttristate '\"conntrack\" connection tracking match support'\n--\nnet/netfilter/Kconfig-1259-\nnet/netfilter/Kconfig:1260:config NETFILTER_XT_MATCH_CPU\nnet/netfilter/Kconfig-1261-\ttristate '\"cpu\" match support'\n--\nnet/netfilter/Kconfig-1268-\nnet/netfilter/Kconfig:1269:config NETFILTER_XT_MATCH_DCCP\nnet/netfilter/Kconfig-1270-\ttristate '\"dccp\" protocol match support (DEPRECATED)'\n--\nnet/netfilter/Kconfig-1280-\nnet/netfilter/Kconfig:1281:config NETFILTER_XT_MATCH_DEVGROUP\nnet/netfilter/Kconfig-1282-\ttristate '\"devgroup\" match support'\n--\nnet/netfilter/Kconfig-1289-\nnet/netfilter/Kconfig:1290:config NETFILTER_XT_MATCH_DSCP\nnet/netfilter/Kconfig-1291-\ttristate '\"dscp\" and \"tos\" match support'\n--\nnet/netfilter/Kconfig-1304-\nnet/netfilter/Kconfig:1305:config NETFILTER_XT_MATCH_ECN\nnet/netfilter/Kconfig-1306-\ttristate '\"ecn\" match support'\n--\nnet/netfilter/Kconfig-1313-\nnet/netfilter/Kconfig:1314:config NETFILTER_XT_MATCH_ESP\nnet/netfilter/Kconfig-1315-\ttristate '\"esp\" match support'\n--\nnet/netfilter/Kconfig-1322-\nnet/netfilter/Kconfig:1323:config NETFILTER_XT_MATCH_HASHLIMIT\nnet/netfilter/Kconfig-1324-\ttristate '\"hashlimit\" match support'\n--\nnet/netfilter/Kconfig-1337-\nnet/netfilter/Kconfig:1338:config NETFILTER_XT_MATCH_HELPER\nnet/netfilter/Kconfig-1339-\ttristate '\"helper\" match support'\n--\nnet/netfilter/Kconfig-1347-\nnet/netfilter/Kconfig:1348:config NETFILTER_XT_MATCH_HL\nnet/netfilter/Kconfig-1349-\ttristate '\"hl\" hoplimit/TTL match support'\n--\nnet/netfilter/Kconfig-1355-\nnet/netfilter/Kconfig:1356:config NETFILTER_XT_MATCH_IPCOMP\nnet/netfilter/Kconfig-1357-\ttristate '\"ipcomp\" match support'\n--\nnet/netfilter/Kconfig-1364-\nnet/netfilter/Kconfig:1365:config NETFILTER_XT_MATCH_IPRANGE\nnet/netfilter/Kconfig-1366-\ttristate '\"iprange\" address range match support'\n--\nnet/netfilter/Kconfig-1374-\nnet/netfilter/Kconfig:1375:config NETFILTER_XT_MATCH_IPVS\nnet/netfilter/Kconfig-1376-\ttristate '\"ipvs\" match support'\n--\nnet/netfilter/Kconfig-1384-\nnet/netfilter/Kconfig:1385:config NETFILTER_XT_MATCH_L2TP\nnet/netfilter/Kconfig-1386-\ttristate '\"l2tp\" match support'\n--\nnet/netfilter/Kconfig-1394-\nnet/netfilter/Kconfig:1395:config NETFILTER_XT_MATCH_LENGTH\nnet/netfilter/Kconfig-1396-\ttristate '\"length\" match support'\n--\nnet/netfilter/Kconfig-1403-\nnet/netfilter/Kconfig:1404:config NETFILTER_XT_MATCH_LIMIT\nnet/netfilter/Kconfig-1405-\ttristate '\"limit\" match support'\n--\nnet/netfilter/Kconfig-1413-\nnet/netfilter/Kconfig:1414:config NETFILTER_XT_MATCH_MAC\nnet/netfilter/Kconfig-1415-\ttristate '\"mac\" address match support'\n--\nnet/netfilter/Kconfig-1422-\nnet/netfilter/Kconfig:1423:config NETFILTER_XT_MATCH_MARK\nnet/netfilter/Kconfig-1424-\ttristate '\"mark\" match support'\n--\nnet/netfilter/Kconfig-1431-\nnet/netfilter/Kconfig:1432:config NETFILTER_XT_MATCH_MULTIPORT\nnet/netfilter/Kconfig-1433-\ttristate '\"multiport\" Multiple port match support'\n--\nnet/netfilter/Kconfig-1441-\nnet/netfilter/Kconfig:1442:config NETFILTER_XT_MATCH_NFACCT\nnet/netfilter/Kconfig-1443-\ttristate '\"nfacct\" match support'\n--\nnet/netfilter/Kconfig-1451-\nnet/netfilter/Kconfig:1452:config NETFILTER_XT_MATCH_OSF\nnet/netfilter/Kconfig-1453-\ttristate '\"osf\" Passive OS fingerprint match'\n--\nnet/netfilter/Kconfig-1465-\nnet/netfilter/Kconfig:1466:config NETFILTER_XT_MATCH_OWNER\nnet/netfilter/Kconfig-1467-\ttristate '\"owner\" match support'\n--\nnet/netfilter/Kconfig-1473-\nnet/netfilter/Kconfig:1474:config NETFILTER_XT_MATCH_POLICY\nnet/netfilter/Kconfig-1475-\ttristate 'IPsec \"policy\" match support'\n--\nnet/netfilter/Kconfig-1484-\nnet/netfilter/Kconfig:1485:config NETFILTER_XT_MATCH_PHYSDEV\nnet/netfilter/Kconfig-1486-\ttristate '\"physdev\" match support'\n--\nnet/netfilter/Kconfig-1494-\nnet/netfilter/Kconfig:1495:config NETFILTER_XT_MATCH_PKTTYPE\nnet/netfilter/Kconfig-1496-\ttristate '\"pkttype\" packet type match support'\n--\nnet/netfilter/Kconfig-1506-\nnet/netfilter/Kconfig:1507:config NETFILTER_XT_MATCH_QUOTA\nnet/netfilter/Kconfig-1508-\ttristate '\"quota\" match support'\n--\nnet/netfilter/Kconfig-1516-\nnet/netfilter/Kconfig:1517:config NETFILTER_XT_MATCH_RATEEST\nnet/netfilter/Kconfig-1518-\ttristate '\"rateest\" match support'\n--\nnet/netfilter/Kconfig-1526-\nnet/netfilter/Kconfig:1527:config NETFILTER_XT_MATCH_REALM\nnet/netfilter/Kconfig-1528-\ttristate '\"realm\" match support'\n--\nnet/netfilter/Kconfig-1540-\nnet/netfilter/Kconfig:1541:config NETFILTER_XT_MATCH_RECENT\nnet/netfilter/Kconfig-1542-\ttristate '\"recent\" match support'\n--\nnet/netfilter/Kconfig-1550-\nnet/netfilter/Kconfig:1551:config NETFILTER_XT_MATCH_SCTP\nnet/netfilter/Kconfig-1552-\ttristate '\"sctp\" protocol match support'\n--\nnet/netfilter/Kconfig-1562-\nnet/netfilter/Kconfig:1563:config NETFILTER_XT_MATCH_SOCKET\nnet/netfilter/Kconfig-1564-\ttristate '\"socket\" match support'\n--\nnet/netfilter/Kconfig-1579-\nnet/netfilter/Kconfig:1580:config NETFILTER_XT_MATCH_STATE\nnet/netfilter/Kconfig-1581-\ttristate '\"state\" match support'\n--\nnet/netfilter/Kconfig-1590-\nnet/netfilter/Kconfig:1591:config NETFILTER_XT_MATCH_STATISTIC\nnet/netfilter/Kconfig-1592-\ttristate '\"statistic\" match support'\n--\nnet/netfilter/Kconfig-1599-\nnet/netfilter/Kconfig:1600:config NETFILTER_XT_MATCH_STRING\nnet/netfilter/Kconfig-1601-\ttristate '\"string\" match support'\n--\nnet/netfilter/Kconfig-1612-\nnet/netfilter/Kconfig:1613:config NETFILTER_XT_MATCH_TCPMSS\nnet/netfilter/Kconfig-1614-\ttristate '\"tcpmss\" match support'\n--\nnet/netfilter/Kconfig-1622-\nnet/netfilter/Kconfig:1623:config NETFILTER_XT_MATCH_TIME\nnet/netfilter/Kconfig-1624-\ttristate '\"time\" match support'\n--\nnet/netfilter/Kconfig-1636-\nnet/netfilter/Kconfig:1637:config NETFILTER_XT_MATCH_U32\nnet/netfilter/Kconfig-1638-\ttristate '\"u32\" match support'\n"
} |
| 17/2 | 2026/08/12 23:26 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 18203 output: 35 thoughts: 501 Thoughts: **Analyzing the Dependencies and Symbol Scope for nf_tables** Okay, let's break this down for this `nf_tables` patch. First, the core dependency is `NETFILTER`, and while `NF_TABLES` itself depends on `NETFILTER`, it seems like enabling `NF_TABLES` alone is sufficient for the changes in this patch, though including `NETFILTER` for general configuration is always a good practice. Since the patch modifies `net/netfilter/nf_tables_api.c`, and that file compiles only when `CONFIG_NF_TABLES` is enabled, then enabling `NF_TABLES` is the only absolutely essential configuration option here. Now, on to the focus symbols. We have `nf_tables_commit`, `nf_tables_abort`, `nf_tables_newsetelem`, and `nf_tables_delsetelem`. My initial thought was to check if they were static, because static inline functions are to be avoided per the guidelines. And, yes, they are all *static*. Wait a second... they are all static but they are assigned to the `nf_tables_cb` array and `nf_tables_subsys` struct. They are not inlined because they are used as function pointers! This means they have distinct symbol addresses, and they are not optimized away. Therefore, they are not a problem. The key is that, even though they're static, they serve as the *entry points* to the `nf_tables` netlink API. These functions are, effectively, the means by which external components interact with the modified code. This is very important. I should double check to see if there are other, non-static functions in `nf_tables_api.c` that might be relevant to the patch. Although it's unlikely, it's worth a quick look. We have to consider that `nfnetlink_rcv_batch` calls `nf_tables_commit` and `nf_tables_abort`. However, `nfnetlink_rcv_batch` is in `nfnetlink.c`, which tells me the netlink subsystem handles the dispatch. So the static functions in `nf_tables_api.c` are fine to include as FocusSymbols since they act as entrypoints. |
| 18/2 | 2026/08/12 23:26 | tool | grepper |
0mArgs:{
"Expression": "EXPORT_SYMBOL",
"PathPrefix": "net/netfilter/nf_tables_api.c"
}Results: {
"Output": "net/netfilter/nf_tables_api.c=1074=__printf(2, 3) int nft_request_module(struct net *net, const char *fmt,\n--\nnet/netfilter/nf_tables_api.c-1109-}\nnet/netfilter/nf_tables_api.c:1110:EXPORT_SYMBOL_GPL(nft_request_module);\nnet/netfilter/nf_tables_api.c-1111-#endif\n--\nnet/netfilter/nf_tables_api.c=1837=void nft_register_chain_type(const struct nft_chain_type *ctype)\n--\nnet/netfilter/nf_tables_api.c-1846-}\nnet/netfilter/nf_tables_api.c:1847:EXPORT_SYMBOL_GPL(nft_register_chain_type);\nnet/netfilter/nf_tables_api.c-1848-\nnet/netfilter/nf_tables_api.c=1849=void nft_unregister_chain_type(const struct nft_chain_type *ctype)\n--\nnet/netfilter/nf_tables_api.c-1854-}\nnet/netfilter/nf_tables_api.c:1855:EXPORT_SYMBOL_GPL(nft_unregister_chain_type);\nnet/netfilter/nf_tables_api.c-1856-\n--\nnet/netfilter/nf_tables_api.c=3389=int nft_register_expr(struct nft_expr_type *type)\n--\nnet/netfilter/nf_tables_api.c-3403-}\nnet/netfilter/nf_tables_api.c:3404:EXPORT_SYMBOL_GPL(nft_register_expr);\nnet/netfilter/nf_tables_api.c-3405-\n--\nnet/netfilter/nf_tables_api.c=3412=void nft_unregister_expr(struct nft_expr_type *type)\n--\nnet/netfilter/nf_tables_api.c-3417-}\nnet/netfilter/nf_tables_api.c:3418:EXPORT_SYMBOL_GPL(nft_unregister_expr);\nnet/netfilter/nf_tables_api.c-3419-\n--\nnet/netfilter/nf_tables_api.c=8086=int nft_register_obj(struct nft_object_type *obj_type)\n--\nnet/netfilter/nf_tables_api.c-8095-}\nnet/netfilter/nf_tables_api.c:8096:EXPORT_SYMBOL_GPL(nft_register_obj);\nnet/netfilter/nf_tables_api.c-8097-\n--\nnet/netfilter/nf_tables_api.c=8104=void nft_unregister_obj(struct nft_object_type *obj_type)\n--\nnet/netfilter/nf_tables_api.c-8109-}\nnet/netfilter/nf_tables_api.c:8110:EXPORT_SYMBOL_GPL(nft_unregister_obj);\nnet/netfilter/nf_tables_api.c-8111-\n--\nnet/netfilter/nf_tables_api.c=8768=void nft_obj_notify(struct net *net, const struct nft_table *table,\n--\nnet/netfilter/nf_tables_api.c-8786-}\nnet/netfilter/nf_tables_api.c:8787:EXPORT_SYMBOL_GPL(nft_obj_notify);\nnet/netfilter/nf_tables_api.c-8788-\n--\nnet/netfilter/nf_tables_api.c=8800=void nft_register_flowtable_type(struct nf_flowtable_type *type)\n--\nnet/netfilter/nf_tables_api.c-8805-}\nnet/netfilter/nf_tables_api.c:8806:EXPORT_SYMBOL_GPL(nft_register_flowtable_type);\nnet/netfilter/nf_tables_api.c-8807-\nnet/netfilter/nf_tables_api.c=8808=void nft_unregister_flowtable_type(struct nf_flowtable_type *type)\n--\nnet/netfilter/nf_tables_api.c-8813-}\nnet/netfilter/nf_tables_api.c:8814:EXPORT_SYMBOL_GPL(nft_unregister_flowtable_type);\nnet/netfilter/nf_tables_api.c-8815-\n--\nnet/netfilter/nf_tables_api.c=8826=struct nft_flowtable *nft_flowtable_lookup(const struct net *net,\n--\nnet/netfilter/nf_tables_api.c-8839-}\nnet/netfilter/nf_tables_api.c:8840:EXPORT_SYMBOL_GPL(nft_flowtable_lookup);\nnet/netfilter/nf_tables_api.c-8841-\nnet/netfilter/nf_tables_api.c=8842=void nf_tables_deactivate_flowtable(const struct nft_ctx *ctx,\n--\nnet/netfilter/nf_tables_api.c-8856-}\nnet/netfilter/nf_tables_api.c:8857:EXPORT_SYMBOL_GPL(nf_tables_deactivate_flowtable);\nnet/netfilter/nf_tables_api.c-8858-\n--\nnet/netfilter/nf_tables_api.c=9758=struct nf_hook_ops *nft_hook_find_ops(const struct nft_hook *hook,\n--\nnet/netfilter/nf_tables_api.c-9768-}\nnet/netfilter/nf_tables_api.c:9769:EXPORT_SYMBOL_GPL(nft_hook_find_ops);\nnet/netfilter/nf_tables_api.c-9770-\nnet/netfilter/nf_tables_api.c=9771=struct nf_hook_ops *nft_hook_find_ops_rcu(const struct nft_hook *hook,\n--\nnet/netfilter/nf_tables_api.c-9781-}\nnet/netfilter/nf_tables_api.c:9782:EXPORT_SYMBOL_GPL(nft_hook_find_ops_rcu);\nnet/netfilter/nf_tables_api.c-9783-\n--\nnet/netfilter/nf_tables_api.c=10299=void nf_tables_trans_destroy_flush_work(struct net *net)\n--\nnet/netfilter/nf_tables_api.c-10304-}\nnet/netfilter/nf_tables_api.c:10305:EXPORT_SYMBOL_GPL(nf_tables_trans_destroy_flush_work);\nnet/netfilter/nf_tables_api.c-10306-\n--\nnet/netfilter/nf_tables_api.c=11550=int nft_chain_validate_dependency(const struct nft_chain *chain,\n--\nnet/netfilter/nf_tables_api.c-11561-}\nnet/netfilter/nf_tables_api.c:11562:EXPORT_SYMBOL_GPL(nft_chain_validate_dependency);\nnet/netfilter/nf_tables_api.c-11563-\nnet/netfilter/nf_tables_api.c=11564=int nft_chain_validate_hooks(const struct nft_chain *chain,\n--\nnet/netfilter/nf_tables_api.c-11579-}\nnet/netfilter/nf_tables_api.c:11580:EXPORT_SYMBOL_GPL(nft_chain_validate_hooks);\nnet/netfilter/nf_tables_api.c-11581-\n--\nnet/netfilter/nf_tables_api.c=11594=int nft_parse_u32_check(const struct nlattr *attr, int max, u32 *dest)\n--\nnet/netfilter/nf_tables_api.c-11604-}\nnet/netfilter/nf_tables_api.c:11605:EXPORT_SYMBOL_GPL(nft_parse_u32_check);\nnet/netfilter/nf_tables_api.c-11606-\n--\nnet/netfilter/nf_tables_api.c=11637=int nft_dump_register(struct sk_buff *skb, unsigned int attr, unsigned int reg)\n--\nnet/netfilter/nf_tables_api.c-11645-}\nnet/netfilter/nf_tables_api.c:11646:EXPORT_SYMBOL_GPL(nft_dump_register);\nnet/netfilter/nf_tables_api.c-11647-\n--\nnet/netfilter/nf_tables_api.c=11660=int nft_parse_register_load(const struct nft_ctx *ctx,\n--\nnet/netfilter/nf_tables_api.c-11691-}\nnet/netfilter/nf_tables_api.c:11692:EXPORT_SYMBOL_GPL(nft_parse_register_load);\nnet/netfilter/nf_tables_api.c-11693-\n--\nnet/netfilter/nf_tables_api.c=11736=int nft_parse_register_store(const struct nft_ctx *ctx,\n--\nnet/netfilter/nf_tables_api.c-11754-}\nnet/netfilter/nf_tables_api.c:11755:EXPORT_SYMBOL_GPL(nft_parse_register_store);\nnet/netfilter/nf_tables_api.c-11756-\n--\nnet/netfilter/nf_tables_api.c=11921=int nft_data_init(const struct nft_ctx *ctx, struct nft_data *data,\n--\nnet/netfilter/nf_tables_api.c-11952-}\nnet/netfilter/nf_tables_api.c:11953:EXPORT_SYMBOL_GPL(nft_data_init);\nnet/netfilter/nf_tables_api.c-11954-\n"
} |
| 19/2 | 2026/08/12 23:26 | llm | patch-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 21778 output: 205 thoughts: 434 Thoughts: **Analyzing the nf_tables Netlink API Patch** Okay, so I've been digging into this patch. My initial thought is that the exported functions here are largely registration utilities or helpers, not the core logic. The meat of the netlink handling is tucked away in static handlers, assigned to `nf_tables_cb` and `nf_tables_subsys`. My key focus symbols for fuzzing will be `nf_tables_commit`, `nf_tables_abort`, `nf_tables_newsetelem`, and `nf_tables_delsetelem`. *Wait*, right, those are static, but they are assigned to the `commit`, `abort`, and `call` members of `nfnetlink_subsystem` and `nf_tables_cb` respectively, so that's perfectly fine. No issue there. Let's do a quick sanity check for any missing configs, but `NF_TABLES` looks sufficient for coverage. Now, to articulate the reasoning behind targeting these symbols for fuzzing. This patch is fundamentally altering the netfilter nf_tables API, introducing a `set_update_list` within `struct nftables_pernet`. The change impacts how set elements are added, removed, and aborted during netlink transactions. More specifically, it's modifying functions like `nft_trans_commit_list_add_elem`, `nft_set_commit_update`, `nf_tables_commit`, and `__nf_tables_abort` to correctly manage this new list and the associated update ordering. Given that this is a functional shift in core netfilter logic, exposed via netlink sockets, we *absolutely* need to fuzz it. It's a critical area for preventing regressions and potential memory corruption vulnerabilities. Time to call `set-results`. |
| 20/2 | 2026/08/12 23:26 | tool | set-results |
0mArgs:{
"EnableConfigs": [
"NF_TABLES"
],
"FocusSymbols": [
"nf_tables_commit",
"nf_tables_abort",
"nf_tables_newsetelem",
"nf_tables_delsetelem"
],
"Reasoning": "The patch modifies the netfilter nf_tables API to introduce a `set_update_list` in `struct nftables_pernet`. It changes how set elements are added, removed, and aborted during netlink transactions. Specifically, it modifies `nft_trans_commit_list_add_elem`, `nft_set_commit_update`, `nf_tables_commit`, and `__nf_tables_abort` to handle the new list and ensure proper ordering of set updates. This is a functional change in the core netfilter logic that is reachable via netlink sockets and should be fuzzed to prevent regressions or memory corruption issues.",
"WorthFuzzing": true
}Results: {
"EnableConfigs": [
"NF_TABLES"
],
"FocusSymbols": [
"nf_tables_commit",
"nf_tables_abort",
"nf_tables_newsetelem",
"nf_tables_delsetelem"
],
"Reasoning": "The patch modifies the netfilter nf_tables API to introduce a `set_update_list` in `struct nftables_pernet`. It changes how set elements are added, removed, and aborted during netlink transactions. Specifically, it modifies `nft_trans_commit_list_add_elem`, `nft_set_commit_update`, `nf_tables_commit`, and `__nf_tables_abort` to handle the new list and ensure proper ordering of set updates. This is a functional change in the core netfilter logic that is reachable via netlink sockets and should be fuzzed to prevent regressions or memory corruption issues.",
"WorthFuzzing": true
} |
| 21/1 | 2026/08/12 23:26 | action | If |
0mArgs:{
"WorthFuzzing": true
}Results: null |
| 22/2 | 2026/08/12 23:26 | agent | kmsan-evaluator |
0mModel:best-expensive Args: null Results: {
"KMSANReasoning": "The patch refactors the transaction commit and abort logic in netfilter tables (nf_tables). It moves the `set_update_list` from being a local variable in `nf_tables_commit` and `__nf_tables_abort` to a per-net namespace structure (`struct nftables_pernet`). It also adjusts the order of operations during the commit phase, specifically calling `nft_set_commit_update` earlier and modifying how `NFT_MSG_DELSETELEM` messages are processed and notified.\n\nThese changes are purely related to control flow, list management, and the netfilter transaction state machine (likely to fix a race condition, use-after-free, or ordering issue). The patch does not introduce any new data structures that are copied to user space, nor does it modify buffer allocations, bounds checking, or initialization logic in a way that could expose uninitialized kernel memory (info-leaks) or cause uninitialized memory to be used in control flow.\n\nAny bugs introduced or fixed by this patch (such as use-after-free, double-free, or list corruption) would be reliably detected by standard KASAN and standard kernel debug options (like `CONFIG_DEBUG_LIST`). Therefore, a dedicated KMSAN fuzzing session is not justified.",
"NeedsKMSAN": false
}Instruction: You are an expert Linux kernel security engineer specializing in kernel memory
error detectors (KASAN and KMSAN). Your job is to review the provided patch series and
determine if the code changes justify spawning a dedicated KMSAN (KernelMemorySanitizer)
fuzzing session in addition to standard KASAN fuzzing.
CRITICAL DISTINCTION BETWEEN KASAN AND KMSAN:
- Standard KASAN kernel builds (upstream-apparmor-kasan.config) already enable
a comprehensive suite of debugging tools and sanitizers, including KASAN
(out-of-bounds accesses, use-after-free, double free, invalid free), LOCKDEP
(locking bugs and deadlocks), UB-sanitizers, and memory corruption checks.
- KMSAN (KernelMemorySanitizer) detects reads of UNINITIALIZED memory (stack, heap,
or page allocations) and kernel-to-user memory info-leaks.
Rule: THERE IS NO SENSE IN RUNNING A KMSAN SESSION IF A BUG CAN BE CAUGHT BY KASAN,
LOCKDEP, OR OTHER STANDARD BUG DETECTORS.
A dedicated KMSAN fuzzing session incurs significant resource costs. You must ONLY
set NeedsKMSAN=true if the code changes introduce or expose UNINITIALIZED MEMORY risks
that are detected ONLY by KMSAN.
Look holistically at the patch series and surrounding code. Even if no direct
uninitialized field accesses or new buffer allocations are added in the diff itself,
a patch may alter control flow, bounds checking, or data length calculations in ways
that change how the rest of the code operates on existing buffers (e.g. allowing
uninitialized stack/heap memory to be read, copied to user space, or used in control
flow). Do not hesitate to use your code access tools to inspect the surrounding code,
called functions, and callers.
Set NeedsKMSAN=true ONLY IF the patch introduces or modifies:
1. Kernel structures sent to user space (via copy_to_user, put_user, netlink skb
attributes, ioctl output arguments, socket options, or BPF buffers) where fields
or structure padding might not be fully initialized/zeroed.
2. Conditional logic or branching that depends on potentially uninitialized variables
or struct fields.
3. Allocation or initialization of complex data structures where uninitialized fields
could be read later in reachable code paths.
4. Bounds checks, lengths, or logic in a way that allows surrounding code to access
uninitialized bytes of existing buffers.
Set NeedsKMSAN=false IF:
- The code changes primarily risk out-of-bounds access, array overflows, NULL pointer
dereferences, locking deadlocks, or use-after-free bugs (these are already caught
by KASAN, LOCKDEP, or standard bug detectors).
- All stack/heap structures touched or introduced by the patch are fully zeroed
or initialized (e.g. using = {0}, memset, kzalloc) before being read or copied.
- The patch does not introduce any risk of uninitialized memory usage or info-leaks.
Use your code access tools to inspect the surrounding code if necessary, then provide
detailed KMSANReasoning contrasting KASAN vs KMSAN applicability for this patch.
Prefer calling several tools at the same time to save round-trips.
Use set-results tool to provide results of the analysis.
It must be called exactly once before the final reply.
Ignore results of this tool.
Prompt: For your convenience, here is the diff of the changes:
commit 0d9312a0d8da6ce82e05368439a99f7a60d2f91c
Author: syz-cluster <triage@syzkaller.com>
Date: Wed Aug 12 23:25:32 2026 +0000
syz-cluster: applied patch under review
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 3be612145c130..238f6ecb90e99 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -1949,6 +1949,7 @@ struct nftables_pernet {
struct list_head binding_list;
struct list_head module_list;
struct list_head notify_list;
+ struct list_head set_update_list;
struct mutex commit_mutex;
u64 table_handle;
u64 tstamp;
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index af357f6c5070b..5c4f6c3545950 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -595,10 +595,15 @@ static void nft_trans_commit_list_add_tail(struct net *net, struct nft_trans *tr
static void nft_trans_commit_list_add_elem(struct net *net, struct nft_trans *trans)
{
struct nftables_pernet *nft_net = nft_pernet(net);
+ struct nft_trans_elem *te;
WARN_ON_ONCE(trans->msg_type != NFT_MSG_NEWSETELEM &&
trans->msg_type != NFT_MSG_DELSETELEM);
+ te = nft_trans_container_elem(trans);
+ if (te->set->ops->commit && list_empty(&te->set->pending_update))
+ list_add_tail(&te->set->pending_update, &nft_net->set_update_list);
+
if (nft_trans_try_collapse(nft_net, trans)) {
kfree(trans);
return;
@@ -7205,6 +7210,20 @@ static void nft_trans_elems_remove(const struct nft_ctx *ctx,
}
}
+static void nft_trans_elems_remove_notify(const struct nft_ctx *ctx,
+ const struct nft_trans_elem *te)
+{
+ int i;
+
+ for (i = 0; i < te->nelems; i++) {
+ WARN_ON_ONCE(te->elems[i].update);
+
+ nf_tables_setelem_notify(ctx, te->set,
+ te->elems[i].priv,
+ te->nft_trans.msg_type);
+ }
+}
+
static bool nft_setelem_valid_key_end(const struct nft_set *set,
struct nlattr **nla, u32 flags)
{
@@ -10848,11 +10867,31 @@ static void nf_tables_commit_audit_log(struct list_head *adl, u32 generation)
}
}
-static void nft_set_commit_update(struct list_head *set_update_list)
+static void nft_set_commit_update(struct nft_ctx *ctx,
+ struct nftables_pernet *nft_net)
{
struct nft_set *set, *next;
+ struct nft_trans_elem *te;
+ struct nft_trans *trans;
- list_for_each_entry_safe(set, next, set_update_list, pending_update) {
+ if (list_empty(&nft_net->set_update_list))
+ return;
+
+ list_for_each_entry(trans, &nft_net->commit_list, list) {
+ nft_ctx_update(ctx, trans);
+
+ switch (trans->msg_type) {
+ case NFT_MSG_DELSETELEM:
+ te = nft_trans_container_elem(trans);
+ if (!te->set->ops->commit)
+ break;
+
+ nft_trans_elems_remove(ctx, te);
+ break;
+ }
+ }
+
+ list_for_each_entry_safe(set, next, &nft_net->set_update_list, pending_update) {
list_del_init(&set->pending_update);
if (!set->ops->commit || set->dead)
@@ -10885,7 +10924,6 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)
struct nft_trans_binding *trans_binding;
struct nft_trans *trans, *next;
unsigned int base_seq, gc_seq;
- LIST_HEAD(set_update_list);
struct nft_trans_elem *te;
struct nft_chain *chain;
struct nft_table *table;
@@ -10960,6 +10998,8 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)
}
/* step 2. Make rules_gen_X visible to packet path */
+ nft_set_commit_update(&ctx, nft_net);
+
list_for_each_entry(table, &nft_net->tables, list) {
list_for_each_entry(chain, &table->chains, list)
nf_tables_commit_chain(net, chain);
@@ -11091,27 +11131,16 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)
break;
case NFT_MSG_NEWSETELEM:
te = nft_trans_container_elem(trans);
-
nft_trans_elems_add(&ctx, te);
-
- if (te->set->ops->commit &&
- list_empty(&te->set->pending_update)) {
- list_add_tail(&te->set->pending_update,
- &set_update_list);
- }
nft_trans_destroy(trans);
break;
case NFT_MSG_DELSETELEM:
case NFT_MSG_DESTROYSETELEM:
te = nft_trans_container_elem(trans);
-
- nft_trans_elems_remove(&ctx, te);
-
- if (te->set->ops->commit &&
- list_empty(&te->set->pending_update)) {
- list_add_tail(&te->set->pending_update,
- &set_update_list);
- }
+ if (te->set->ops->commit)
+ nft_trans_elems_remove_notify(&ctx, te);
+ else
+ nft_trans_elems_remove(&ctx, te);
break;
case NFT_MSG_NEWOBJ:
if (nft_trans_obj_update(trans)) {
@@ -11180,8 +11209,6 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)
}
}
- nft_set_commit_update(&set_update_list);
-
nft_commit_notify(net, NETLINK_CB(skb).portid);
nf_tables_gen_notify(net, skb, NFT_MSG_NEWGEN);
nf_tables_commit_audit_log(&adl, nft_base_seq(net));
@@ -11247,11 +11274,11 @@ static void nf_tables_abort_release(struct nft_trans *trans)
kfree(trans);
}
-static void nft_set_abort_update(struct list_head *set_update_list)
+static void nft_set_abort_update(struct nftables_pernet *nft_net)
{
struct nft_set *set, *next;
- list_for_each_entry_safe(set, next, set_update_list, pending_update) {
+ list_for_each_entry_safe(set, next, &nft_net->set_update_list, pending_update) {
list_del_init(&set->pending_update);
if (!set->ops->abort)
@@ -11386,33 +11413,22 @@ static int __nf_tables_abort(struct net *net, enum nfnl_abort_action action)
nft_trans_destroy(trans);
break;
case NFT_MSG_NEWSETELEM:
+ te = nft_trans_container_elem(trans);
if (nft_trans_elem_set_bound(trans)) {
+ list_del_init(&te->set->pending_update);
nft_trans_destroy(trans);
break;
}
- te = nft_trans_container_elem(trans);
if (!nft_trans_elems_new_abort(&ctx, te)) {
nft_trans_destroy(trans);
break;
}
-
- if (te->set->ops->abort &&
- list_empty(&te->set->pending_update)) {
- list_add_tail(&te->set->pending_update,
- &set_update_list);
- }
break;
case NFT_MSG_DELSETELEM:
case NFT_MSG_DESTROYSETELEM:
te = nft_trans_container_elem(trans);
nft_trans_elems_destroy_abort(&ctx, te);
-
- if (te->set->ops->abort &&
- list_empty(&te->set->pending_update)) {
- list_add_tail(&te->set->pending_update,
- &set_update_list);
- }
nft_trans_destroy(trans);
break;
case NFT_MSG_NEWOBJ:
@@ -11458,7 +11474,7 @@ static int __nf_tables_abort(struct net *net, enum nfnl_abort_action action)
WARN_ON_ONCE(!list_empty(&nft_net->commit_set_list));
- nft_set_abort_update(&set_update_list);
+ nft_set_abort_update(nft_net);
synchronize_rcu();
@@ -12142,6 +12158,7 @@ static int __net_init nf_tables_init_net(struct net *net)
INIT_LIST_HEAD(&nft_net->binding_list);
INIT_LIST_HEAD(&nft_net->module_list);
INIT_LIST_HEAD(&nft_net->notify_list);
+ INIT_LIST_HEAD(&nft_net->set_update_list);
mutex_init(&nft_net->commit_mutex);
net->nft.base_seq = 1;
nft_net->gc_seq = 0;
@@ -12186,6 +12203,7 @@ static void __net_exit nf_tables_exit_net(struct net *net)
WARN_ON_ONCE(!list_empty(&nft_net->module_list));
WARN_ON_ONCE(!list_empty(&nft_net->notify_list));
WARN_ON_ONCE(!list_empty(&nft_net->destroy_list));
+ WARN_ON_ONCE(!list_empty(&nft_net->set_update_list));
}
static void nf_tables_exit_batch(struct list_head *net_exit_list)
|
| 23/3 | 2026/08/12 23:26 | llm | kmsan-evaluator |
0mModel:gemini-3.1-pro-preview Args: null Results: null Tokens: input: 4777 output: 292 thoughts: 977 Thoughts: **Analysis of the Netfilter Tables Commit/Abort Patch** Okay, here's what I've got after reviewing this patch. It's focused on refactoring the commit and abort logic within the netfilter tables code. The core change is the relocation of the `set_update_list`. Previously, this list was a local variable within `nf_tables_commit` and `__nf_tables_abort`. Now, it's been moved to the `struct nftables_pernet` structure, making it a per-net namespace resource. The implications are clear: this list, which tracks sets pending updates, can now be populated during the transaction preparation stage and is then processed during commit or abort. This list management also changes how `NFT_MSG_DELSETELEM` messages are handled, with an earlier call to `nft_set_commit_update`. This likely alters the processing order of these messages within the commit process. My expert intuition, combined with the context, strongly suggests this is about fixing a race condition, a use-after-free scenario, or a similar ordering bug related to set element updates and the commit/abort process. This isn't about introducing new features; it's a critical bug fix. Now, the important question for my evaluation is uninitialized memory. Does this patch introduce a risk of uninitialized memory being read or used in control flow? After a careful examination, I'm confident the answer is no. This patch doesn't introduce any new structures that are passed to user space. It doesn't touch memory allocation or the fields of any data structures in a way that would introduce an info-leak. It's purely about control flow and list management. The `set_update_list` is just a list head. The fact that the list is moved to a per-net structure doesn't change anything about how its elements are initialized, nor does it make any new uninitialized memory vulnerabilities. So, while this patch is crucial for fixing the bug it addresses, it doesn't necessitate a specialized KMSAN (Kernel Memory Sanitizer) fuzzing session. The standard KASAN (Kernel Address Sanitizer) and standard debug options (like `CONFIG_DEBUG_LIST`) are more than capable of catching any use-after-free, list corruption, or related memory errors that might arise from these changes. Standard debugging tools are sufficient. I can rely on those. I do not see any new information leaks, which is good. I'm ready to move on. |
| 24/3 | 2026/08/12 23:26 | tool | set-results |
0mArgs:{
"KMSANReasoning": "The patch refactors the transaction commit and abort logic in netfilter tables (nf_tables). It moves the `set_update_list` from being a local variable in `nf_tables_commit` and `__nf_tables_abort` to a per-net namespace structure (`struct nftables_pernet`). It also adjusts the order of operations during the commit phase, specifically calling `nft_set_commit_update` earlier and modifying how `NFT_MSG_DELSETELEM` messages are processed and notified.\n\nThese changes are purely related to control flow, list management, and the netfilter transaction state machine (likely to fix a race condition, use-after-free, or ordering issue). The patch does not introduce any new data structures that are copied to user space, nor does it modify buffer allocations, bounds checking, or initialization logic in a way that could expose uninitialized kernel memory (info-leaks) or cause uninitialized memory to be used in control flow.\n\nAny bugs introduced or fixed by this patch (such as use-after-free, double-free, or list corruption) would be reliably detected by standard KASAN and standard kernel debug options (like `CONFIG_DEBUG_LIST`). Therefore, a dedicated KMSAN fuzzing session is not justified.",
"NeedsKMSAN": false
}Results: {
"KMSANReasoning": "The patch refactors the transaction commit and abort logic in netfilter tables (nf_tables). It moves the `set_update_list` from being a local variable in `nf_tables_commit` and `__nf_tables_abort` to a per-net namespace structure (`struct nftables_pernet`). It also adjusts the order of operations during the commit phase, specifically calling `nft_set_commit_update` earlier and modifying how `NFT_MSG_DELSETELEM` messages are processed and notified.\n\nThese changes are purely related to control flow, list management, and the netfilter transaction state machine (likely to fix a race condition, use-after-free, or ordering issue). The patch does not introduce any new data structures that are copied to user space, nor does it modify buffer allocations, bounds checking, or initialization logic in a way that could expose uninitialized kernel memory (info-leaks) or cause uninitialized memory to be used in control flow.\n\nAny bugs introduced or fixed by this patch (such as use-after-free, double-free, or list corruption) would be reliably detected by standard KASAN and standard kernel debug options (like `CONFIG_DEBUG_LIST`). Therefore, a dedicated KMSAN fuzzing session is not justified.",
"NeedsKMSAN": false
} |
| Total Calls | Total Tokens | Avg Tokens | Total Duration (Seconds) | Avg Duration (Seconds) |
|---|
| Total Calls | Total Duration (Seconds) | Avg Duration (Seconds) |
|---|