AI Trajectory


Trajectory: (Expand/Collapse All)
Seq Timestamp Type Name Duration
0/0 2026/06/22 08:53 flow patch-triage
0m Args: 
null

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch modifies the Mellanox mlx5 ethernet driver, which is a hardware-specific PCI driver. Since syzkaller does not emulate Mellanox hardware in standard virtualized environments (like GCE or QEMU), this code is unreachable during fuzzing.",
  "WorthFuzzing": false
}
1/1 2026/06/22 08:53 action read-patch-diff
0m Args: 
null

Results: 
{
  "PatchDiff": "commit 9f65c955469cbd5734355ee2e6a16dbfc5792109\nAuthor: syz-cluster \u003ctriage@syzkaller.com\u003e\nDate:   Mon Jun 22 08:52:59 2026 +0000\n\n    syz-cluster: applied patch under review\n\ndiff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h\nindex 2270e2e550dd9e..d507289096c206 100644\n--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h\n+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h\n@@ -987,6 +987,18 @@ struct mlx5e_priv {\n \tstruct ethtool_fec_hist_range *fec_ranges;\n };\n \n+static inline u16 mlx5e_stats_nch_read(const struct mlx5e_priv *priv)\n+{\n+\t/* Pairs with smp_store_release in mlx5e_stats_nch_write(). */\n+\treturn smp_load_acquire(\u0026priv-\u003estats_nch);\n+}\n+\n+static inline void mlx5e_stats_nch_write(struct mlx5e_priv *priv, u16 n)\n+{\n+\t/* Pairs with smp_load_acquire in mlx5e_stats_nch_read(). */\n+\tsmp_store_release(\u0026priv-\u003estats_nch, n);\n+}\n+\n struct mlx5e_dev {\n \tstruct net_device *netdev;\n \tstruct devlink_port dl_port;\ndiff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c\nindex 195863b2c013e2..9747d7736d37af 100644\n--- a/drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c\n+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c\n@@ -33,9 +33,10 @@ mlx5e_hv_vhca_fill_ring_stats(struct mlx5e_priv *priv, int ch,\n static void mlx5e_hv_vhca_fill_stats(struct mlx5e_priv *priv, void *data,\n \t\t\t\t     int buf_len)\n {\n+\tu16 nch = mlx5e_stats_nch_read(priv);\n \tint ch, i = 0;\n \n-\tfor (ch = 0; ch \u003c priv-\u003estats_nch; ch++) {\n+\tfor (ch = 0; ch \u003c nch; ch++) {\n \t\tvoid *buf = data + i;\n \n \t\tif (WARN_ON_ONCE(buf +\n@@ -49,9 +50,16 @@ static void mlx5e_hv_vhca_fill_stats(struct mlx5e_priv *priv, void *data,\n }\n \n static int mlx5e_hv_vhca_stats_buf_size(struct mlx5e_priv *priv)\n+{\n+\tu16 nch = mlx5e_stats_nch_read(priv);\n+\n+\treturn sizeof(struct mlx5e_hv_vhca_per_ring_stats) * nch;\n+}\n+\n+static int mlx5e_hv_vhca_stats_buf_max_size(struct mlx5e_priv *priv)\n {\n \treturn (sizeof(struct mlx5e_hv_vhca_per_ring_stats) *\n-\t\tpriv-\u003estats_nch);\n+\t\tmax(priv-\u003emax_nch, priv-\u003estats_nch));\n }\n \n static void mlx5e_hv_vhca_stats_work(struct work_struct *work)\n@@ -67,7 +75,7 @@ static void mlx5e_hv_vhca_stats_work(struct work_struct *work)\n \tsagent = container_of(dwork, struct mlx5e_hv_vhca_stats_agent, work);\n \tpriv = container_of(sagent, struct mlx5e_priv, stats_agent);\n \tbuf_len = mlx5e_hv_vhca_stats_buf_size(priv);\n-\tagent = sagent-\u003eagent;\n+\tagent = READ_ONCE(sagent-\u003eagent);\n \tbuf = sagent-\u003ebuf;\n \n \tmemset(buf, 0, buf_len);\n@@ -100,7 +108,7 @@ static void mlx5e_hv_vhca_stats_control(struct mlx5_hv_vhca_agent *agent,\n \tsagent = \u0026priv-\u003estats_agent;\n \n \tblock-\u003eversion = MLX5_HV_VHCA_STATS_VERSION;\n-\tblock-\u003erings   = priv-\u003estats_nch;\n+\tblock-\u003erings   = mlx5e_stats_nch_read(priv);\n \n \tif (!block-\u003ecommand) {\n \t\tcancel_delayed_work_sync(\u0026priv-\u003estats_agent.work);\n@@ -122,18 +130,21 @@ static void mlx5e_hv_vhca_stats_cleanup(struct mlx5_hv_vhca_agent *agent)\n \n void mlx5e_hv_vhca_stats_create(struct mlx5e_priv *priv)\n {\n-\tint buf_len = mlx5e_hv_vhca_stats_buf_size(priv);\n+\tint buf_len = mlx5e_hv_vhca_stats_buf_max_size(priv);\n \tstruct mlx5_hv_vhca_agent *agent;\n \n \tpriv-\u003estats_agent.buf = kvzalloc(buf_len, GFP_KERNEL);\n \tif (!priv-\u003estats_agent.buf)\n \t\treturn;\n \n+\tINIT_DELAYED_WORK(\u0026priv-\u003estats_agent.work, mlx5e_hv_vhca_stats_work);\n+\n \tagent = mlx5_hv_vhca_agent_create(priv-\u003emdev-\u003ehv_vhca,\n \t\t\t\t\t  MLX5_HV_VHCA_AGENT_STATS,\n \t\t\t\t\t  mlx5e_hv_vhca_stats_control, NULL,\n \t\t\t\t\t  mlx5e_hv_vhca_stats_cleanup,\n-\t\t\t\t\t  priv);\n+\t\t\t\t\t  priv,\n+\t\t\t\t\t  \u0026priv-\u003estats_agent.agent);\n \n \tif (IS_ERR_OR_NULL(agent)) {\n \t\tif (IS_ERR(agent))\n@@ -142,18 +153,21 @@ void mlx5e_hv_vhca_stats_create(struct mlx5e_priv *priv)\n \t\t\t\t    agent);\n \n \t\tkvfree(priv-\u003estats_agent.buf);\n-\t\treturn;\n+\t\tpriv-\u003estats_agent.buf = NULL;\n \t}\n-\n-\tpriv-\u003estats_agent.agent = agent;\n-\tINIT_DELAYED_WORK(\u0026priv-\u003estats_agent.work, mlx5e_hv_vhca_stats_work);\n }\n \n void mlx5e_hv_vhca_stats_destroy(struct mlx5e_priv *priv)\n {\n-\tif (IS_ERR_OR_NULL(priv-\u003estats_agent.agent))\n+\tstruct mlx5_hv_vhca_agent *agent;\n+\n+\tagent = READ_ONCE(priv-\u003estats_agent.agent);\n+\tif (IS_ERR_OR_NULL(agent))\n \t\treturn;\n \n-\tmlx5_hv_vhca_agent_destroy(priv-\u003estats_agent.agent);\n+\tmlx5_hv_vhca_agent_destroy(agent);\n \tkvfree(priv-\u003estats_agent.buf);\n+\n+\tWRITE_ONCE(priv-\u003estats_agent.agent, NULL);\n+\tpriv-\u003estats_agent.buf = NULL;\n }\ndiff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c\nindex 775f0c6e55c955..aa8610cedaa85b 100644\n--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c\n+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c\n@@ -2773,7 +2773,7 @@ static int mlx5e_channel_stats_alloc(struct mlx5e_priv *priv, int ix, int cpu)\n \t\t\t\t\t\tGFP_KERNEL, cpu_to_node(cpu));\n \tif (!priv-\u003echannel_stats[ix])\n \t\treturn -ENOMEM;\n-\tpriv-\u003estats_nch++;\n+\tmlx5e_stats_nch_write(priv, priv-\u003estats_nch + 1);\n \n \treturn 0;\n }\n@@ -4040,9 +4040,10 @@ static int mlx5e_setup_tc(struct net_device *dev, enum tc_setup_type type,\n \n void mlx5e_fold_sw_stats64(struct mlx5e_priv *priv, struct rtnl_link_stats64 *s)\n {\n+\tu16 nch = mlx5e_stats_nch_read(priv);\n \tint i;\n \n-\tfor (i = 0; i \u003c priv-\u003estats_nch; i++) {\n+\tfor (i = 0; i \u003c nch; i++) {\n \t\tstruct mlx5e_channel_stats *channel_stats = priv-\u003echannel_stats[i];\n \t\tstruct mlx5e_rq_stats *xskrq_stats = \u0026channel_stats-\u003exskrq;\n \t\tstruct mlx5e_rq_stats *rq_stats = \u0026channel_stats-\u003erq;\n@@ -5488,7 +5489,7 @@ static void mlx5e_get_queue_stats_rx(struct net_device *dev, int i,\n \tstruct mlx5e_rq_stats *xskrq_stats;\n \tstruct mlx5e_rq_stats *rq_stats;\n \n-\tif (mlx5e_is_uplink_rep(priv) || !priv-\u003estats_nch)\n+\tif (mlx5e_is_uplink_rep(priv) || !mlx5e_stats_nch_read(priv))\n \t\treturn;\n \n \tchannel_stats = priv-\u003echannel_stats[i];\n@@ -5512,7 +5513,7 @@ static void mlx5e_get_queue_stats_tx(struct net_device *dev, int i,\n \tstruct mlx5e_priv *priv = netdev_priv(dev);\n \tstruct mlx5e_sq_stats *sq_stats;\n \n-\tif (!priv-\u003estats_nch)\n+\tif (!mlx5e_stats_nch_read(priv))\n \t\treturn;\n \n \t/* no special case needed for ptp htb etc since txq2sq_stats is kept up\n@@ -5538,6 +5539,7 @@ static void mlx5e_get_base_stats(struct net_device *dev,\n \t\t\t\t struct netdev_queue_stats_tx *tx)\n {\n \tstruct mlx5e_priv *priv = netdev_priv(dev);\n+\tu16 nch = mlx5e_stats_nch_read(priv);\n \tstruct mlx5e_ptp *ptp_channel;\n \tint i, tc;\n \n@@ -5549,7 +5551,7 @@ static void mlx5e_get_base_stats(struct net_device *dev,\n \t\trx-\u003ehw_gro_wire_packets = 0;\n \t\trx-\u003ehw_gro_wire_bytes = 0;\n \n-\t\tfor (i = priv-\u003echannels.params.num_channels; i \u003c priv-\u003estats_nch; i++) {\n+\t\tfor (i = priv-\u003echannels.params.num_channels; i \u003c nch; i++) {\n \t\t\tstruct netdev_queue_stats_rx rx_i = {0};\n \n \t\t\tmlx5e_get_queue_stats_rx(dev, i, \u0026rx_i);\n@@ -5585,7 +5587,7 @@ static void mlx5e_get_base_stats(struct net_device *dev,\n \ttx-\u003estop = 0;\n \ttx-\u003ewake = 0;\n \n-\tfor (i = 0; i \u003c priv-\u003estats_nch; i++) {\n+\tfor (i = 0; i \u003c nch; i++) {\n \t\tstruct mlx5e_channel_stats *channel_stats = priv-\u003echannel_stats[i];\n \n \t\t/* handle two cases:\ndiff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c\nindex 7f33261ba6553b..de38b60806c264 100644\n--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c\n+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c\n@@ -515,6 +515,7 @@ static void mlx5e_stats_update_stats_rq_page_pool(struct mlx5e_channel *c)\n static MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(sw)\n {\n \tstruct mlx5e_sw_stats *s = \u0026priv-\u003estats.sw;\n+\tu16 nch = mlx5e_stats_nch_read(priv);\n \tint i;\n \n \tmemset(s, 0, sizeof(*s));\n@@ -522,7 +523,7 @@ static MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(sw)\n \tfor (i = 0; i \u003c priv-\u003echannels.num; i++) /* for active channels only */\n \t\tmlx5e_stats_update_stats_rq_page_pool(priv-\u003echannels.c[i]);\n \n-\tfor (i = 0; i \u003c priv-\u003estats_nch; i++) {\n+\tfor (i = 0; i \u003c nch; i++) {\n \t\tstruct mlx5e_channel_stats *channel_stats =\n \t\t\tpriv-\u003echannel_stats[i];\n \n@@ -2614,7 +2615,7 @@ static MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(ptp) { return; }\n \n static MLX5E_DECLARE_STATS_GRP_OP_NUM_STATS(channels)\n {\n-\tint max_nch = priv-\u003estats_nch;\n+\tint max_nch = mlx5e_stats_nch_read(priv);\n \n \treturn (NUM_RQ_STATS * max_nch) +\n \t       (NUM_CH_STATS * max_nch) +\n@@ -2627,8 +2628,8 @@ static MLX5E_DECLARE_STATS_GRP_OP_NUM_STATS(channels)\n \n static MLX5E_DECLARE_STATS_GRP_OP_FILL_STRS(channels)\n {\n+\tint max_nch = mlx5e_stats_nch_read(priv);\n \tbool is_xsk = priv-\u003exsk.ever_used;\n-\tint max_nch = priv-\u003estats_nch;\n \tint i, j, tc;\n \n \tfor (i = 0; i \u003c max_nch; i++)\n@@ -2660,8 +2661,8 @@ static MLX5E_DECLARE_STATS_GRP_OP_FILL_STRS(channels)\n \n static MLX5E_DECLARE_STATS_GRP_OP_FILL_STATS(channels)\n {\n+\tint max_nch = mlx5e_stats_nch_read(priv);\n \tbool is_xsk = priv-\u003exsk.ever_used;\n-\tint max_nch = priv-\u003estats_nch;\n \tint i, j, tc;\n \n \tfor (i = 0; i \u003c max_nch; i++)\ndiff --git a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c\nindex 0a6003fe60e9f8..674bed721e6375 100644\n--- a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c\n+++ b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c\n@@ -135,10 +135,11 @@ void mlx5i_cleanup(struct mlx5e_priv *priv)\n \n static void mlx5i_grp_sw_update_stats(struct mlx5e_priv *priv)\n {\n+\tu16 nch = mlx5e_stats_nch_read(priv);\n \tstruct rtnl_link_stats64 s = {};\n \tint i, j;\n \n-\tfor (i = 0; i \u003c priv-\u003estats_nch; i++) {\n+\tfor (i = 0; i \u003c nch; i++) {\n \t\tstruct mlx5e_channel_stats *channel_stats;\n \t\tstruct mlx5e_rq_stats *rq_stats;\n \ndiff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.c\nindex d6dc7bce855e0b..305752dab7bdf4 100644\n--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.c\n+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.c\n@@ -190,7 +190,7 @@ mlx5_hv_vhca_control_agent_create(struct mlx5_hv_vhca *hv_vhca)\n \treturn mlx5_hv_vhca_agent_create(hv_vhca, MLX5_HV_VHCA_AGENT_CONTROL,\n \t\t\t\t\t NULL,\n \t\t\t\t\t mlx5_hv_vhca_control_agent_invalidate,\n-\t\t\t\t\t NULL, NULL);\n+\t\t\t\t\t NULL, NULL, NULL);\n }\n \n static void mlx5_hv_vhca_control_agent_destroy(struct mlx5_hv_vhca_agent *agent)\n@@ -256,7 +256,8 @@ mlx5_hv_vhca_agent_create(struct mlx5_hv_vhca *hv_vhca,\n \t\t\t  void (*invalidate)(struct mlx5_hv_vhca_agent*,\n \t\t\t\t\t     u64 block_mask),\n \t\t\t  void (*cleaup)(struct mlx5_hv_vhca_agent *agent),\n-\t\t\t  void *priv)\n+\t\t\t  void *priv,\n+\t\t\t  struct mlx5_hv_vhca_agent **ctx_update)\n {\n \tstruct mlx5_hv_vhca_agent *agent;\n \n@@ -284,6 +285,9 @@ mlx5_hv_vhca_agent_create(struct mlx5_hv_vhca *hv_vhca,\n \tagent-\u003einvalidate = invalidate;\n \tagent-\u003ecleanup   = cleaup;\n \n+\tif (ctx_update)\n+\t\tWRITE_ONCE(*ctx_update, agent);\n+\n \tmutex_lock(\u0026hv_vhca-\u003eagents_lock);\n \thv_vhca-\u003eagents[type] = agent;\n \tmutex_unlock(\u0026hv_vhca-\u003eagents_lock);\ndiff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h b/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h\nindex f240ffe5116c5b..8b3974cf0ee49a 100644\n--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h\n+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h\n@@ -43,7 +43,8 @@ mlx5_hv_vhca_agent_create(struct mlx5_hv_vhca *hv_vhca,\n \t\t\t  void (*invalidate)(struct mlx5_hv_vhca_agent*,\n \t\t\t\t\t     u64 block_mask),\n \t\t\t  void (*cleanup)(struct mlx5_hv_vhca_agent *agent),\n-\t\t\t  void *context);\n+\t\t\t  void *context,\n+\t\t\t  struct mlx5_hv_vhca_agent **ctx_update);\n \n void mlx5_hv_vhca_agent_destroy(struct mlx5_hv_vhca_agent *agent);\n int mlx5_hv_vhca_agent_write(struct mlx5_hv_vhca_agent *agent,\n@@ -84,7 +85,8 @@ mlx5_hv_vhca_agent_create(struct mlx5_hv_vhca *hv_vhca,\n \t\t\t  void (*invalidate)(struct mlx5_hv_vhca_agent*,\n \t\t\t\t\t     u64 block_mask),\n \t\t\t  void (*cleanup)(struct mlx5_hv_vhca_agent *agent),\n-\t\t\t  void *context)\n+\t\t\t  void *context,\n+\t\t\t  struct mlx5_hv_vhca_agent **ctx_update)\n {\n \treturn NULL;\n }\n"
}
2/1 2026/06/22 08:53 agent patch-evaluator
0m Model: 
gemini-3.1-pro-preview

Args: 
null

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch modifies the Mellanox mlx5 ethernet driver, which is a hardware-specific PCI driver. Since syzkaller does not emulate Mellanox hardware in standard virtualized environments (like GCE or QEMU), this code is unreachable during fuzzing.",
  "WorthFuzzing": false
}

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).

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.
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.
   Do not list too generic configs (we already have them enabled). Only list those that
   specifically cover the modified code. 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 9f65c955469cbd5734355ee2e6a16dbfc5792109
Author: syz-cluster <triage@syzkaller.com>
Date:   Mon Jun 22 08:52:59 2026 +0000

    syz-cluster: applied patch under review

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index 2270e2e550dd9e..d507289096c206 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -987,6 +987,18 @@ struct mlx5e_priv {
 	struct ethtool_fec_hist_range *fec_ranges;
 };
 
+static inline u16 mlx5e_stats_nch_read(const struct mlx5e_priv *priv)
+{
+	/* Pairs with smp_store_release in mlx5e_stats_nch_write(). */
+	return smp_load_acquire(&priv->stats_nch);
+}
+
+static inline void mlx5e_stats_nch_write(struct mlx5e_priv *priv, u16 n)
+{
+	/* Pairs with smp_load_acquire in mlx5e_stats_nch_read(). */
+	smp_store_release(&priv->stats_nch, n);
+}
+
 struct mlx5e_dev {
 	struct net_device *netdev;
 	struct devlink_port dl_port;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c
index 195863b2c013e2..9747d7736d37af 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c
@@ -33,9 +33,10 @@ mlx5e_hv_vhca_fill_ring_stats(struct mlx5e_priv *priv, int ch,
 static void mlx5e_hv_vhca_fill_stats(struct mlx5e_priv *priv, void *data,
 				     int buf_len)
 {
+	u16 nch = mlx5e_stats_nch_read(priv);
 	int ch, i = 0;
 
-	for (ch = 0; ch < priv->stats_nch; ch++) {
+	for (ch = 0; ch < nch; ch++) {
 		void *buf = data + i;
 
 		if (WARN_ON_ONCE(buf +
@@ -49,9 +50,16 @@ static void mlx5e_hv_vhca_fill_stats(struct mlx5e_priv *priv, void *data,
 }
 
 static int mlx5e_hv_vhca_stats_buf_size(struct mlx5e_priv *priv)
+{
+	u16 nch = mlx5e_stats_nch_read(priv);
+
+	return sizeof(struct mlx5e_hv_vhca_per_ring_stats) * nch;
+}
+
+static int mlx5e_hv_vhca_stats_buf_max_size(struct mlx5e_priv *priv)
 {
 	return (sizeof(struct mlx5e_hv_vhca_per_ring_stats) *
-		priv->stats_nch);
+		max(priv->max_nch, priv->stats_nch));
 }
 
 static void mlx5e_hv_vhca_stats_work(struct work_struct *work)
@@ -67,7 +75,7 @@ static void mlx5e_hv_vhca_stats_work(struct work_struct *work)
 	sagent = container_of(dwork, struct mlx5e_hv_vhca_stats_agent, work);
 	priv = container_of(sagent, struct mlx5e_priv, stats_agent);
 	buf_len = mlx5e_hv_vhca_stats_buf_size(priv);
-	agent = sagent->agent;
+	agent = READ_ONCE(sagent->agent);
 	buf = sagent->buf;
 
 	memset(buf, 0, buf_len);
@@ -100,7 +108,7 @@ static void mlx5e_hv_vhca_stats_control(struct mlx5_hv_vhca_agent *agent,
 	sagent = &priv->stats_agent;
 
 	block->version = MLX5_HV_VHCA_STATS_VERSION;
-	block->rings   = priv->stats_nch;
+	block->rings   = mlx5e_stats_nch_read(priv);
 
 	if (!block->command) {
 		cancel_delayed_work_sync(&priv->stats_agent.work);
@@ -122,18 +130,21 @@ static void mlx5e_hv_vhca_stats_cleanup(struct mlx5_hv_vhca_agent *agent)
 
 void mlx5e_hv_vhca_stats_create(struct mlx5e_priv *priv)
 {
-	int buf_len = mlx5e_hv_vhca_stats_buf_size(priv);
+	int buf_len = mlx5e_hv_vhca_stats_buf_max_size(priv);
 	struct mlx5_hv_vhca_agent *agent;
 
 	priv->stats_agent.buf = kvzalloc(buf_len, GFP_KERNEL);
 	if (!priv->stats_agent.buf)
 		return;
 
+	INIT_DELAYED_WORK(&priv->stats_agent.work, mlx5e_hv_vhca_stats_work);
+
 	agent = mlx5_hv_vhca_agent_create(priv->mdev->hv_vhca,
 					  MLX5_HV_VHCA_AGENT_STATS,
 					  mlx5e_hv_vhca_stats_control, NULL,
 					  mlx5e_hv_vhca_stats_cleanup,
-					  priv);
+					  priv,
+					  &priv->stats_agent.agent);
 
 	if (IS_ERR_OR_NULL(agent)) {
 		if (IS_ERR(agent))
@@ -142,18 +153,21 @@ void mlx5e_hv_vhca_stats_create(struct mlx5e_priv *priv)
 				    agent);
 
 		kvfree(priv->stats_agent.buf);
-		return;
+		priv->stats_agent.buf = NULL;
 	}
-
-	priv->stats_agent.agent = agent;
-	INIT_DELAYED_WORK(&priv->stats_agent.work, mlx5e_hv_vhca_stats_work);
 }
 
 void mlx5e_hv_vhca_stats_destroy(struct mlx5e_priv *priv)
 {
-	if (IS_ERR_OR_NULL(priv->stats_agent.agent))
+	struct mlx5_hv_vhca_agent *agent;
+
+	agent = READ_ONCE(priv->stats_agent.agent);
+	if (IS_ERR_OR_NULL(agent))
 		return;
 
-	mlx5_hv_vhca_agent_destroy(priv->stats_agent.agent);
+	mlx5_hv_vhca_agent_destroy(agent);
 	kvfree(priv->stats_agent.buf);
+
+	WRITE_ONCE(priv->stats_agent.agent, NULL);
+	priv->stats_agent.buf = NULL;
 }
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 775f0c6e55c955..aa8610cedaa85b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -2773,7 +2773,7 @@ static int mlx5e_channel_stats_alloc(struct mlx5e_priv *priv, int ix, int cpu)
 						GFP_KERNEL, cpu_to_node(cpu));
 	if (!priv->channel_stats[ix])
 		return -ENOMEM;
-	priv->stats_nch++;
+	mlx5e_stats_nch_write(priv, priv->stats_nch + 1);
 
 	return 0;
 }
@@ -4040,9 +4040,10 @@ static int mlx5e_setup_tc(struct net_device *dev, enum tc_setup_type type,
 
 void mlx5e_fold_sw_stats64(struct mlx5e_priv *priv, struct rtnl_link_stats64 *s)
 {
+	u16 nch = mlx5e_stats_nch_read(priv);
 	int i;
 
-	for (i = 0; i < priv->stats_nch; i++) {
+	for (i = 0; i < nch; i++) {
 		struct mlx5e_channel_stats *channel_stats = priv->channel_stats[i];
 		struct mlx5e_rq_stats *xskrq_stats = &channel_stats->xskrq;
 		struct mlx5e_rq_stats *rq_stats = &channel_stats->rq;
@@ -5488,7 +5489,7 @@ static void mlx5e_get_queue_stats_rx(struct net_device *dev, int i,
 	struct mlx5e_rq_stats *xskrq_stats;
 	struct mlx5e_rq_stats *rq_stats;
 
-	if (mlx5e_is_uplink_rep(priv) || !priv->stats_nch)
+	if (mlx5e_is_uplink_rep(priv) || !mlx5e_stats_nch_read(priv))
 		return;
 
 	channel_stats = priv->channel_stats[i];
@@ -5512,7 +5513,7 @@ static void mlx5e_get_queue_stats_tx(struct net_device *dev, int i,
 	struct mlx5e_priv *priv = netdev_priv(dev);
 	struct mlx5e_sq_stats *sq_stats;
 
-	if (!priv->stats_nch)
+	if (!mlx5e_stats_nch_read(priv))
 		return;
 
 	/* no special case needed for ptp htb etc since txq2sq_stats is kept up
@@ -5538,6 +5539,7 @@ static void mlx5e_get_base_stats(struct net_device *dev,
 				 struct netdev_queue_stats_tx *tx)
 {
 	struct mlx5e_priv *priv = netdev_priv(dev);
+	u16 nch = mlx5e_stats_nch_read(priv);
 	struct mlx5e_ptp *ptp_channel;
 	int i, tc;
 
@@ -5549,7 +5551,7 @@ static void mlx5e_get_base_stats(struct net_device *dev,
 		rx->hw_gro_wire_packets = 0;
 		rx->hw_gro_wire_bytes = 0;
 
-		for (i = priv->channels.params.num_channels; i < priv->stats_nch; i++) {
+		for (i = priv->channels.params.num_channels; i < nch; i++) {
 			struct netdev_queue_stats_rx rx_i = {0};
 
 			mlx5e_get_queue_stats_rx(dev, i, &rx_i);
@@ -5585,7 +5587,7 @@ static void mlx5e_get_base_stats(struct net_device *dev,
 	tx->stop = 0;
 	tx->wake = 0;
 
-	for (i = 0; i < priv->stats_nch; i++) {
+	for (i = 0; i < nch; i++) {
 		struct mlx5e_channel_stats *channel_stats = priv->channel_stats[i];
 
 		/* handle two cases:
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
index 7f33261ba6553b..de38b60806c264 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c
@@ -515,6 +515,7 @@ static void mlx5e_stats_update_stats_rq_page_pool(struct mlx5e_channel *c)
 static MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(sw)
 {
 	struct mlx5e_sw_stats *s = &priv->stats.sw;
+	u16 nch = mlx5e_stats_nch_read(priv);
 	int i;
 
 	memset(s, 0, sizeof(*s));
@@ -522,7 +523,7 @@ static MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(sw)
 	for (i = 0; i < priv->channels.num; i++) /* for active channels only */
 		mlx5e_stats_update_stats_rq_page_pool(priv->channels.c[i]);
 
-	for (i = 0; i < priv->stats_nch; i++) {
+	for (i = 0; i < nch; i++) {
 		struct mlx5e_channel_stats *channel_stats =
 			priv->channel_stats[i];
 
@@ -2614,7 +2615,7 @@ static MLX5E_DECLARE_STATS_GRP_OP_UPDATE_STATS(ptp) { return; }
 
 static MLX5E_DECLARE_STATS_GRP_OP_NUM_STATS(channels)
 {
-	int max_nch = priv->stats_nch;
+	int max_nch = mlx5e_stats_nch_read(priv);
 
 	return (NUM_RQ_STATS * max_nch) +
 	       (NUM_CH_STATS * max_nch) +
@@ -2627,8 +2628,8 @@ static MLX5E_DECLARE_STATS_GRP_OP_NUM_STATS(channels)
 
 static MLX5E_DECLARE_STATS_GRP_OP_FILL_STRS(channels)
 {
+	int max_nch = mlx5e_stats_nch_read(priv);
 	bool is_xsk = priv->xsk.ever_used;
-	int max_nch = priv->stats_nch;
 	int i, j, tc;
 
 	for (i = 0; i < max_nch; i++)
@@ -2660,8 +2661,8 @@ static MLX5E_DECLARE_STATS_GRP_OP_FILL_STRS(channels)
 
 static MLX5E_DECLARE_STATS_GRP_OP_FILL_STATS(channels)
 {
+	int max_nch = mlx5e_stats_nch_read(priv);
 	bool is_xsk = priv->xsk.ever_used;
-	int max_nch = priv->stats_nch;
 	int i, j, tc;
 
 	for (i = 0; i < max_nch; i++)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
index 0a6003fe60e9f8..674bed721e6375 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
@@ -135,10 +135,11 @@ void mlx5i_cleanup(struct mlx5e_priv *priv)
 
 static void mlx5i_grp_sw_update_stats(struct mlx5e_priv *priv)
 {
+	u16 nch = mlx5e_stats_nch_read(priv);
 	struct rtnl_link_stats64 s = {};
 	int i, j;
 
-	for (i = 0; i < priv->stats_nch; i++) {
+	for (i = 0; i < nch; i++) {
 		struct mlx5e_channel_stats *channel_stats;
 		struct mlx5e_rq_stats *rq_stats;
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.c
index d6dc7bce855e0b..305752dab7bdf4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.c
@@ -190,7 +190,7 @@ mlx5_hv_vhca_control_agent_create(struct mlx5_hv_vhca *hv_vhca)
 	return mlx5_hv_vhca_agent_create(hv_vhca, MLX5_HV_VHCA_AGENT_CONTROL,
 					 NULL,
 					 mlx5_hv_vhca_control_agent_invalidate,
-					 NULL, NULL);
+					 NULL, NULL, NULL);
 }
 
 static void mlx5_hv_vhca_control_agent_destroy(struct mlx5_hv_vhca_agent *agent)
@@ -256,7 +256,8 @@ mlx5_hv_vhca_agent_create(struct mlx5_hv_vhca *hv_vhca,
 			  void (*invalidate)(struct mlx5_hv_vhca_agent*,
 					     u64 block_mask),
 			  void (*cleaup)(struct mlx5_hv_vhca_agent *agent),
-			  void *priv)
+			  void *priv,
+			  struct mlx5_hv_vhca_agent **ctx_update)
 {
 	struct mlx5_hv_vhca_agent *agent;
 
@@ -284,6 +285,9 @@ mlx5_hv_vhca_agent_create(struct mlx5_hv_vhca *hv_vhca,
 	agent->invalidate = invalidate;
 	agent->cleanup   = cleaup;
 
+	if (ctx_update)
+		WRITE_ONCE(*ctx_update, agent);
+
 	mutex_lock(&hv_vhca->agents_lock);
 	hv_vhca->agents[type] = agent;
 	mutex_unlock(&hv_vhca->agents_lock);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h b/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h
index f240ffe5116c5b..8b3974cf0ee49a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h
@@ -43,7 +43,8 @@ mlx5_hv_vhca_agent_create(struct mlx5_hv_vhca *hv_vhca,
 			  void (*invalidate)(struct mlx5_hv_vhca_agent*,
 					     u64 block_mask),
 			  void (*cleanup)(struct mlx5_hv_vhca_agent *agent),
-			  void *context);
+			  void *context,
+			  struct mlx5_hv_vhca_agent **ctx_update);
 
 void mlx5_hv_vhca_agent_destroy(struct mlx5_hv_vhca_agent *agent);
 int mlx5_hv_vhca_agent_write(struct mlx5_hv_vhca_agent *agent,
@@ -84,7 +85,8 @@ mlx5_hv_vhca_agent_create(struct mlx5_hv_vhca *hv_vhca,
 			  void (*invalidate)(struct mlx5_hv_vhca_agent*,
 					     u64 block_mask),
 			  void (*cleanup)(struct mlx5_hv_vhca_agent *agent),
-			  void *context)
+			  void *context,
+			  struct mlx5_hv_vhca_agent **ctx_update)
 {
 	return NULL;
 }

3/2 2026/06/22 08:53 llm patch-evaluator
0m Model: 
gemini-3.1-pro-preview

Args: 
null

Results: 
null

Tokens: 
							input: 7110
							output: 36
							thoughts: 608

Thoughts: 
**Fuzzing Feasibility Assessment: Mellanox mlx5 Driver Patch**

Okay, so I've got this patch that tweaks the Mellanox mlx5 Ethernet driver. It's touching `priv->stats_nch` with `smp_load_acquire` and `smp_store_release`, and then it's modifying `mlx5e_hv_vhca_stats_create`, `mlx5e_hv_vhca_stats_destroy`, and `mlx5e_hv_vhca_stats_buf_max_size` for thread safety and memory management. The files affected are scattered across the `drivers/net/ethernet/mellanox/mlx5` directory structure: `core/en/hv_vhca_stats.c`, `core/en_main.c`, `core/en_stats.c`, `core/ipoib/ipoib.c`, and `core/lib/hv_vhca.c`.

The big question is: can I fuzz this effectively? This is a hardware driver for ConnectX-4/5/6/7, so I know I'm dealing with PCI devices here. My initial thought is that standard VM fuzzing won't cut it. Syzkaller doesn't seem to have emulated Mellanox mlx5 hardware, and that's usually a dealbreaker. Unless there's a specific emulation layer or a virtual driver equivalent, drivers like these are notoriously difficult to target without real hardware or a method of PCI passthrough.

I need to confirm if there is *any* way to run this code without direct hardware access. Does syzkaller have an alternative to test mlx5? The obvious answer is no. This driver seems to be purely tied to physical PCI devices. Without that PCI device, the probe function is never called, and the driver code is never executed in a virtual environment. This means code related to `mlx5e_hv_vhca_stats_create` can't be reached.

Just to be absolutely sure, I'll quickly check for any software emulation, mock implementations, or virtual driver components. I will use `grepper` to search through the codebase for anything related to mlx5 in the `tools/` or `drivers/` directories.

Based on my understanding, without PCI passthrough, which is often complex and resource-intensive, fuzzing this patch in a typical VM setup looks highly unlikely. My assessment is that `WorthFuzzing=false`.

4/2 2026/06/22 08:53 tool grepper
0m Args: 
{
  "Expression": "mlx5",
  "PathPrefix": "drivers/net/ethernet/mellanox/mlx5/"
}

Results: 
{
  "Output": "\nFull output is too long, showing 500 out of 99111 lines.\nUse more precise expression if possible.\n\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig=19=config MLX5_FPGA\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig-25-\t  and an FPGA chip on one board. If you select this option, the\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig:26:\t  mlx5_core driver will include the Innova FPGA core and allow building\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig-27-\t  sandbox-specific client drivers.\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig=77=config MLX5_BRIDGE\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig-81-\thelp\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig:82:\t  mlx5 ConnectX offloads support for Ethernet Bridging (BRIDGE).\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig-83-\t  Enable offloading FDB rules from a bridge device containing\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig:84:\t  representors of mlx5 uplink and VF ports. Supports VLANs (trunk and\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig-85-\t  access modes).\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig=87=config MLX5_CLS_ACT\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig-91-\thelp\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig:92:\t  mlx5 ConnectX offloads support for TC classifier action (NET_CLS_ACT),\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig-93-\t  works in both native NIC mode and Switchdev SRIOV mode.\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig=210=config MLX5_EN_PSP\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig-215-\thelp\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig:216:\t  mlx5 device offload support for Google PSP Security Protocol offload.\ndrivers/net/ethernet/mellanox/mlx5/core/Kconfig-217-\t  Adds support for PSP encryption offload and for SPI and key generation\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile=7=subdir-ccflags-y += -I$(src)\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-8-\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:9:obj-$(CONFIG_MLX5_CORE) += mlx5_core.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-10-\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-11-#\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:12:# mlx5 core basic\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-13-#\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:14:mlx5_core-y :=\tmain.o cmd.o debugfs.o fw.o eq.o uar.o pagealloc.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-15-\t\thealth.o mcg.o cq.o alloc.o port.o mr.o pd.o \\\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-25-#\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:26:mlx5_core-$(CONFIG_MLX5_CORE_EN) += en/rqt.o en/tir.o en/rss.o en/rx_res.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-27-\t\ten/channels.o en_main.o en_common.o en_fs.o en_ethtool.o \\\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-37-#\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:38:mlx5_core-$(CONFIG_MLX5_EN_ARFS)     += en_arfs.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:39:mlx5_core-$(CONFIG_MLX5_EN_RXNFC)    += en_fs_ethtool.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:40:mlx5_core-$(CONFIG_MLX5_CORE_EN_DCB) += en_dcbnl.o en/port_buffer.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:41:mlx5_core-$(CONFIG_PCI_HYPERV_INTERFACE) += en/hv_vhca_stats.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:42:mlx5_core-$(CONFIG_MLX5_ESWITCH)     += lag/mp.o lag/port_sel.o lib/geneve.o lib/port_tun.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-43-\t\t\t\t\ten_rep.o en/rep/bond.o en/mod_hdr.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-44-\t\t\t\t\ten/mapping.o lag/mpesw.o lag/shared_fdb.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:45:mlx5_core-$(CONFIG_MLX5_CLS_ACT)     += en_tc.o en/rep/tc.o en/rep/neigh.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-46-\t\t\t\t\tlib/fs_chains.o en/tc_tun.o \\\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-52-\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:53:mlx5_core-$(CONFIG_MLX5_CLS_ACT)     += en/tc/act/act.o en/tc/act/drop.o en/tc/act/trap.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-54-\t\t\t\t\ten/tc/act/accept.o en/tc/act/mark.o en/tc/act/goto.o \\\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile=61=ifneq ($(CONFIG_MLX5_TC_CT),)\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:62:\tmlx5_core-y\t\t\t     += en/tc_ct.o en/tc/ct_fs_dmfs.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:63:\tmlx5_core-$(CONFIG_MLX5_SW_STEERING) += en/tc/ct_fs_smfs.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:64:\tmlx5_core-$(CONFIG_MLX5_HW_STEERING) += en/tc/ct_fs_hmfs.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-65-endif\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-66-\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:67:mlx5_core-$(CONFIG_MLX5_TC_SAMPLE)   += en/tc/sample.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-68-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-71-#\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:72:mlx5_core-$(CONFIG_MLX5_ESWITCH)   += eswitch.o eswitch_offloads.o eswitch_offloads_termtbl.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-73-\t\t\t\t      ecpf.o rdma.o esw/legacy.o esw/adj_vport.o \\\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-75-\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:76:mlx5_core-$(CONFIG_MLX5_ESWITCH)   += esw/acl/helper.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-77-\t\t\t\t      esw/acl/egress_lgcy.o esw/acl/egress_ofld.o \\\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile=80=ifneq ($(CONFIG_MLX5_EN_IPSEC),)\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:81:\tmlx5_core-$(CONFIG_MLX5_ESWITCH)   += esw/ipsec_fs.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-82-endif\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-83-\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:84:mlx5_core-$(CONFIG_MLX5_BRIDGE)    += esw/bridge.o esw/bridge_mcast.o esw/bridge_debugfs.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-85-\t\t\t\t      en/rep/bridge.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-86-\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:87:mlx5_core-$(CONFIG_HWMON)          += hwmon.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:88:mlx5_core-$(CONFIG_MLX5_MPFS)      += lib/mpfs.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-89-ifneq ($(CONFIG_VXLAN),)\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:90:\tmlx5_core-y\t\t   += lib/vxlan.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-91-endif\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:92:mlx5_core-$(CONFIG_PTP_1588_CLOCK) += lib/clock.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:93:mlx5_core-$(CONFIG_PCI_HYPERV_INTERFACE) += lib/hv.o lib/hv_vhca.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-94-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-97-#\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:98:mlx5_core-$(CONFIG_MLX5_CORE_IPOIB) += ipoib/ipoib.o ipoib/ethtool.o ipoib/ipoib_vlan.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-99-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-102-#\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:103:mlx5_core-$(CONFIG_MLX5_FPGA) += fpga/cmd.o fpga/core.o fpga/conn.o fpga/sdk.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-104-\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:105:mlx5_core-$(CONFIG_MLX5_MACSEC) += en_accel/macsec.o lib/macsec_fs.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-106-\t\t\t\t      en_accel/macsec_stats.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-107-\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:108:mlx5_core-$(CONFIG_MLX5_EN_IPSEC) += en_accel/ipsec.o en_accel/ipsec_rxtx.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-109-\t\t\t\t     en_accel/ipsec_stats.o en_accel/ipsec_fs.o \\\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-111-\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:112:mlx5_core-$(CONFIG_MLX5_EN_TLS) += en_accel/ktls_stats.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-113-\t\t\t\t   en_accel/fs_tcp.o en_accel/ktls.o en_accel/ktls_txrx.o \\\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-115-\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:116:mlx5_core-$(CONFIG_MLX5_EN_PSP) += en_accel/psp.o en_accel/psp_rxtx.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-117-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-120-#\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:121:mlx5_core-$(CONFIG_MLX5_SW_STEERING) += steering/sws/dr_domain.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-122-\t\t\t\t\tsteering/sws/dr_table.o \\\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-145-#\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:146:mlx5_core-$(CONFIG_MLX5_HW_STEERING) += steering/hws/cmd.o \\\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-147-\t\t\t\t\tsteering/hws/context.o \\\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-167-#\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:168:mlx5_core-$(CONFIG_MLX5_SF) += sf/vhca_event.o sf/dev/dev.o sf/dev/driver.o irq_affinity.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-169-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-172-#\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:173:mlx5_core-$(CONFIG_MLX5_SF_MANAGER) += sf/cmd.o sf/hw_table.o sf/devlink.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-174-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-177-#\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:178:mlx5_core-$(CONFIG_PCIE_TPH) += lib/st.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile-179-\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:180:obj-$(CONFIG_MLX5_DPLL) += mlx5_dpll.o\ndrivers/net/ethernet/mellanox/mlx5/core/Makefile:181:mlx5_dpll-y :=\tdpll.o\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-42-#include \u003clinux/seq_file.h\u003e\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:43:#include \u003clinux/mlx5/driver.h\u003e\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-44-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:45:#include \"mlx5_core.h\"\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-46-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-50-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:51:struct mlx5_db_pgdir {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-52-\tstruct list_head\tlist;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-57-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:58:struct mlx5_dma_pool {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-59-\t/* Protects page_list and per-page allocation bitmaps. */\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-61-\tstruct list_head page_list;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:62:\tstruct mlx5_core_dev *dev;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-63-\tint node;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-66-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:67:struct mlx5_dma_pool_page {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:68:\tstruct mlx5_dma_pool *pool;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-69-\tstruct list_head pool_link;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-74-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:75:struct mlx5_frag_buf_node_pools {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:76:\tstruct mlx5_dma_pool *pools[MLX5_FRAG_BUF_POOLS_NUM];\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-77-};\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-78-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:79:struct mlx5_dma_pool_stats {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-80-\tint node;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-89-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:90:static void *mlx5_dma_zalloc_coherent_node(struct mlx5_core_dev *dev,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-91-\t\t\t\t\t   size_t size, dma_addr_t *dma_handle,\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-93-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:94:\tstruct device *device = mlx5_core_dma_dev(dev);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:95:\tstruct mlx5_priv *priv = \u0026dev-\u003epriv;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-96-\tint original_node;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-108-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:109:static void mlx5_dma_pool_destroy(struct mlx5_dma_pool *pool)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-110-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-114-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:115:static struct mlx5_dma_pool *mlx5_dma_pool_create(struct mlx5_core_dev *dev,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-116-\t\t\t\t\t\t  int node, u8 block_shift)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-117-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:118:\tstruct mlx5_dma_pool *pool;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-119-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-131-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:132:static struct mlx5_dma_pool_page *\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:133:mlx5_dma_pool_page_alloc(struct mlx5_dma_pool *pool)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-134-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-135-\tint blocks_per_page = BIT(PAGE_SHIFT - pool-\u003eblock_shift);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:136:\tstruct mlx5_dma_pool_page *page;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-137-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-147-\tbitmap_fill(page-\u003ebitmap, blocks_per_page);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:148:\tpage-\u003ebuf = mlx5_dma_zalloc_coherent_node(pool-\u003edev, PAGE_SIZE,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-149-\t\t\t\t\t\t  \u0026page-\u003edma, pool-\u003enode);\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-162-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:163:static void mlx5_dma_pool_page_free(struct mlx5_core_dev *dev,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:164:\t\t\t\t    struct mlx5_dma_pool_page *page)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-165-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:166:\tdma_free_coherent(mlx5_core_dma_dev(dev), PAGE_SIZE, page-\u003ebuf,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-167-\t\t\t  page-\u003edma);\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-171-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:172:static int mlx5_dma_pool_alloc_from_page(struct mlx5_dma_pool *pool,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:173:\t\t\t\t\t struct mlx5_dma_pool_page *page,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-174-\t\t\t\t\t unsigned long *idx_out)\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-189-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:190:static struct mlx5_dma_pool_page *\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:191:mlx5_dma_pool_alloc(struct mlx5_dma_pool *pool, unsigned long *idx_out)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-192-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:193:\tstruct mlx5_dma_pool_page *page;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-194-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-197-\tpage = list_first_entry_or_null(\u0026pool-\u003epage_list,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:198:\t\t\t\t\tstruct mlx5_dma_pool_page, pool_link);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:199:\tif (page \u0026\u0026 !mlx5_dma_pool_alloc_from_page(pool, page, idx_out))\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-200-\t\tgoto unlock; /* successfully allocated from existing page */\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-201-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:202:\tpage = mlx5_dma_pool_page_alloc(pool);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-203-\tif (!page)\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-206-\tlist_add(\u0026page-\u003epool_link, \u0026pool-\u003epage_list);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:207:\tmlx5_dma_pool_alloc_from_page(pool, page, idx_out);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-208-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-213-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:214:static void mlx5_dma_pool_free(struct mlx5_dma_pool *pool,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:215:\t\t\t       struct mlx5_dma_pool_page *page,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-216-\t\t\t       unsigned long idx)\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-226-\t\tlist_del(\u0026page-\u003epool_link);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:227:\t\tmlx5_dma_pool_page_free(pool-\u003edev, page);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-228-\t} else {\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-236-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:237:static void mlx5_dma_pool_debugfs_get_stats(struct mlx5_dma_pool *pool,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:238:\t\t\t\t\t    struct mlx5_dma_pool_stats *stats)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-239-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-240-\tint blocks_per_page = BIT(PAGE_SHIFT - pool-\u003eblock_shift);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:241:\tstruct mlx5_dma_pool_page *page;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-242-\tsize_t free_blocks = 0;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-257-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:258:static void mlx5_dma_pool_debugfs_stats_print(struct seq_file *file,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:259:\t\t\t\t\t      struct mlx5_dma_pool *pool)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-260-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:261:\tstruct mlx5_dma_pool_stats stats = {};\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-262-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:263:\tmlx5_dma_pool_debugfs_get_stats(pool, \u0026stats);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-264-\tseq_printf(file, \"%4d       %5zu      %7zu           %7zu\\n\",\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-268-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:269:static void mlx5_dma_pools_debugfs_print_header(struct seq_file *file)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-270-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c=274=static void\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:275:mlx5_frag_buf_node_pools_destroy(struct mlx5_frag_buf_node_pools *node_pools)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-276-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-278-\t\tif (node_pools-\u003epools[i])\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:279:\t\t\tmlx5_dma_pool_destroy(node_pools-\u003epools[i]);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-280-\tkfree(node_pools);\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-282-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:283:static struct mlx5_frag_buf_node_pools *\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:284:mlx5_frag_buf_node_pools_create(struct mlx5_core_dev *dev, int node)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-285-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:286:\tstruct mlx5_frag_buf_node_pools *node_pools;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-287-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-294-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:295:\t\tnode_pools-\u003epools[i] = mlx5_dma_pool_create(dev, node,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-296-\t\t\t\t\t\t\t    block_shift);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-297-\t\tif (!node_pools-\u003epools[i]) {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:298:\t\t\tmlx5_frag_buf_node_pools_destroy(node_pools);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-299-\t\t\treturn NULL;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c=306=static int\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:307:mlx5_frag_buf_dma_pools_debugfs_show(struct seq_file *file, void *priv)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-308-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:309:\tstruct mlx5_core_dev *dev = file-\u003eprivate;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-310-\tint node;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-311-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:312:\tmlx5_dma_pools_debugfs_print_header(file);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-313-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-317-\tfor_each_node_state(node, N_POSSIBLE) {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:318:\t\tstruct mlx5_frag_buf_node_pools *node_pools;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-319-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-324-\t\tfor (int i = 0; i \u003c MLX5_FRAG_BUF_POOLS_NUM; i++) {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:325:\t\t\tstruct mlx5_dma_pool *pool = node_pools-\u003epools[i];\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-326-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-329-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:330:\t\t\tmlx5_dma_pool_debugfs_stats_print(file, pool);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-331-\t\t}\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-335-}\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:336:DEFINE_SHOW_ATTRIBUTE(mlx5_frag_buf_dma_pools_debugfs);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-337-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:338:void mlx5_frag_buf_pools_cleanup(struct mlx5_core_dev *dev)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-339-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:340:\tstruct mlx5_priv *priv = \u0026dev-\u003epriv;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-341-\tint node;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-346-\tfor_each_node_state(node, N_POSSIBLE) {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:347:\t\tstruct mlx5_frag_buf_node_pools *node_pools;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-348-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-351-\t\t\tcontinue;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:352:\t\tmlx5_frag_buf_node_pools_destroy(node_pools);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-353-\t}\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-358-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:359:int mlx5_frag_buf_pools_init(struct mlx5_core_dev *dev)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-360-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:361:\tstruct mlx5_priv *priv = \u0026dev-\u003epriv;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-362-\tint node;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-369-\tfor_each_node_state(node, N_POSSIBLE) {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:370:\t\tstruct mlx5_frag_buf_node_pools *node_pools;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-371-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:372:\t\tnode_pools = mlx5_frag_buf_node_pools_create(dev, node);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-373-\t\tif (!node_pools) {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:374:\t\t\tmlx5_frag_buf_pools_cleanup(dev);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-375-\t\t\treturn -ENOMEM;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-382-\t\t\t\t    priv-\u003edbg.dbg_root, dev,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:383:\t\t\t\t    \u0026mlx5_frag_buf_dma_pools_debugfs_fops);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-384-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-387-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:388:int mlx5_frag_buf_alloc_node(struct mlx5_core_dev *dev, int size,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:389:\t\t\t     struct mlx5_frag_buf *buf, int node)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-390-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:391:\tstruct mlx5_dma_pool *pool;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-392-\tint pool_idx;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-408-\tfor (int i = 0; i \u003c buf-\u003enpages; i++) {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:409:\t\tstruct mlx5_buf_list *frag = \u0026buf-\u003efrags[i];\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:410:\t\tstruct mlx5_dma_pool_page *page;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-411-\t\tunsigned long idx;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-412-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:413:\t\tpage = mlx5_dma_pool_alloc(pool, \u0026idx);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-414-\t\tif (!page) {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:415:\t\t\tmlx5_frag_buf_free(dev, buf);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-416-\t\t\treturn -ENOMEM;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-424-}\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:425:EXPORT_SYMBOL_GPL(mlx5_frag_buf_alloc_node);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-426-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:427:void mlx5_frag_buf_free(struct mlx5_core_dev *dev, struct mlx5_frag_buf *buf)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-428-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-429-\tfor (int i = 0; i \u003c buf-\u003enpages; i++) {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:430:\t\tstruct mlx5_buf_list *frag = \u0026buf-\u003efrags[i];\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:431:\t\tstruct mlx5_dma_pool_page *page;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:432:\t\tstruct mlx5_dma_pool *pool;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-433-\t\tunsigned long idx;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-440-\t\tidx = (frag-\u003emap - page-\u003edma) \u003e\u003e pool-\u003eblock_shift;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:441:\t\tmlx5_dma_pool_free(pool, page, idx);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-442-\t}\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-444-}\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:445:EXPORT_SYMBOL_GPL(mlx5_frag_buf_free);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-446-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:447:static struct mlx5_db_pgdir *mlx5_alloc_db_pgdir(struct mlx5_core_dev *dev,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-448-\t\t\t\t\t\t int node)\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-450-\tu32 db_per_page = PAGE_SIZE / cache_line_size();\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:451:\tstruct mlx5_db_pgdir *pgdir;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-452-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-464-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:465:\tpgdir-\u003edb_page = mlx5_dma_zalloc_coherent_node(dev, PAGE_SIZE,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-466-\t\t\t\t\t\t       \u0026pgdir-\u003edb_dma, node);\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-475-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:476:static int mlx5_alloc_db_from_pgdir(struct mlx5_db_pgdir *pgdir,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:477:\t\t\t\t    struct mlx5_db *db)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-478-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-500-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:501:int mlx5_db_alloc_node(struct mlx5_core_dev *dev, struct mlx5_db *db, int node)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-502-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:503:\tstruct mlx5_db_pgdir *pgdir;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-504-\tint ret = 0;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-508-\tlist_for_each_entry(pgdir, \u0026dev-\u003epriv.pgdir_list, list)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:509:\t\tif (!mlx5_alloc_db_from_pgdir(pgdir, db))\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-510-\t\t\tgoto out;\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-511-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:512:\tpgdir = mlx5_alloc_db_pgdir(dev, node);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-513-\tif (!pgdir) {\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-520-\t/* This should never fail -- we just allocated an empty page: */\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:521:\tWARN_ON(mlx5_alloc_db_from_pgdir(pgdir, db));\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-522-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-527-}\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:528:EXPORT_SYMBOL_GPL(mlx5_db_alloc_node);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-529-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:530:void mlx5_db_free(struct mlx5_core_dev *dev, struct mlx5_db *db)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-531-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-538-\tif (bitmap_full(db-\u003eu.pgdir-\u003ebitmap, db_per_page)) {\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:539:\t\tdma_free_coherent(mlx5_core_dma_dev(dev), PAGE_SIZE,\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-540-\t\t\t\t  db-\u003eu.pgdir-\u003edb_page, db-\u003eu.pgdir-\u003edb_dma);\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-547-}\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:548:EXPORT_SYMBOL_GPL(mlx5_db_free);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-549-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:550:void mlx5_fill_page_frag_array_perm(struct mlx5_frag_buf *buf, __be64 *pas, u8 perm)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-551-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-557-}\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:558:EXPORT_SYMBOL_GPL(mlx5_fill_page_frag_array_perm);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-559-\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:560:void mlx5_fill_page_frag_array(struct mlx5_frag_buf *buf, __be64 *pas)\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-561-{\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:562:\tmlx5_fill_page_frag_array_perm(buf, pas, 0);\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c-563-}\ndrivers/net/ethernet/mellanox/mlx5/core/alloc.c:564:EXPORT_SYMBOL_GPL(mlx5_fill_page_frag_array);\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-39-#include \u003clinux/random.h\u003e\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:40:#include \u003clinux/mlx5/driver.h\u003e\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:41:#include \u003clinux/mlx5/eq.h\u003e\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-42-#include \u003clinux/debugfs.h\u003e\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-43-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:44:#include \"mlx5_core.h\"\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-45-#include \"lib/eq.h\"\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-49-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:50:struct mlx5_ifc_mbox_out_bits {\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-51-\tu8         status[0x8];\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-58-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:59:struct mlx5_ifc_mbox_in_bits {\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-60-\tu8         opcode[0x10];\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c=97=static u16 in_to_uid(void *in)\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-104- */\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:105:static bool mlx5_cmd_is_throttle_opcode(u16 op)\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-106-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-117-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:118:static struct mlx5_cmd_work_ent *\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:119:cmd_alloc_ent(struct mlx5_cmd *cmd, struct mlx5_cmd_msg *in,\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:120:\t      struct mlx5_cmd_msg *out, void *uout, int uout_size,\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:121:\t      mlx5_cmd_cbk_t cbk, void *context, int page_queue)\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-122-{\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-123-\tgfp_t alloc_flags = cbk ? GFP_ATOMIC : GFP_KERNEL;\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:124:\tstruct mlx5_cmd_work_ent *ent;\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-125-\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-144-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:145:static void cmd_free_ent(struct mlx5_cmd_work_ent *ent)\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-146-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-149-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:150:static u8 alloc_token(struct mlx5_cmd *cmd)\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-151-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-163-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:164:static int cmd_alloc_index(struct mlx5_cmd *cmd, struct mlx5_cmd_work_ent *ent)\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-165-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-180-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:181:static void cmd_free_index(struct mlx5_cmd *cmd, int idx)\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-182-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-187-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:188:static void cmd_ent_get(struct mlx5_cmd_work_ent *ent)\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-189-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-192-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:193:static void cmd_ent_put(struct mlx5_cmd_work_ent *ent)\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-194-{\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:195:\tstruct mlx5_cmd *cmd = ent-\u003ecmd;\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-196-\tunsigned long flags;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-212-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:213:static struct mlx5_cmd_layout *get_inst(struct mlx5_cmd *cmd, int idx)\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-214-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-217-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:218:static int mlx5_calc_cmd_blocks(struct mlx5_cmd_msg *msg)\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-219-{\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c=226=static u8 xor8_buf(void *buf, size_t offset, int len)\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-238-\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:239:static int verify_block_sig(struct mlx5_cmd_prot_block *block)\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-240-{\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c:241:\tsize_t rsvd0_off = offsetof(struct mlx5_cmd_prot_block, rsvd0);\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-242-\tint xor_len = sizeof(*block) - sizeof(block-\u003edata) - 1;\n--\ndrivers/net/ethernet/mellanox/mlx5/core/cmd.c-252-\n\n"
}
5/2 2026/06/22 08:53 llm patch-evaluator
0m Model: 
gemini-3.1-pro-preview

Args: 
null

Results: 
null

Tokens: 
							input: 23292
							output: 40
							thoughts: 118

Thoughts: 
**Analyzing the mlx5 Driver**

Okay, so the text confirms this is a hardware driver, not something syzkaller's emulating. Good, that eliminates a possibility. Now, let's dig a little deeper. I'm going to quickly check `drivers/net/ethernet/mellanox/mlx5/core/en_main.c` to see if there's any sort of software interface involved. I need to understand if this interacts solely through PCI, or if there's some internal software aspect. Ah, the `mlx5_core` driver *does* bind to PCI devices, which isn't entirely unexpected. But that brings up another question: is there any virtual bus mechanism that this driver utilizes, perhaps to handle resource allocation or something similar? I'll quickly check `drivers/net/ethernet/mellanox/mlx5/core/main.c` to see if it provides any clues.

6/2 2026/06/22 08:53 tool grepper
0m Args: 
{
  "Expression": "pci_register_driver",
  "PathPrefix": "drivers/net/ethernet/mellanox/mlx5/"
}

Results: 
{
  "Output": "drivers/net/ethernet/mellanox/mlx5/core/main.c=2343=static int __init mlx5_init(void)\n--\ndrivers/net/ethernet/mellanox/mlx5/core/main.c-2362-\ndrivers/net/ethernet/mellanox/mlx5/core/main.c:2363:\terr = pci_register_driver(\u0026mlx5_core_driver);\ndrivers/net/ethernet/mellanox/mlx5/core/main.c-2364-\tif (err)\n"
}
7/2 2026/06/22 08:53 llm patch-evaluator
0m Model: 
gemini-3.1-pro-preview

Args: 
null

Results: 
null

Tokens: 
							input: 23801
							output: 26
							thoughts: 167

Thoughts: 
**Analyzing the Accessibility of This Code Snippet**

Okay, so I'm looking at this code and, yeah, it's definitely a PCI driver, specifically one related to Mellanox hardware. My initial thought is, can I reach this code via something like netlink, or a more abstracted interface, without actually having the physical hardware present? Because, ideally, I'd want to test it in a controlled environment.

Unfortunately, no. The `mlx5e_priv` structure, which I assume is central to this whole thing, gets allocated and initialized during the PCI device probe. Without the hardware, the driver doesn't get probed, meaning that `priv` structure simply won't exist. In a standard virtualized environment – like Google Compute Engine or QEMU – I'm pretty confident that the modified code would be unreachable without doing PCI passthrough. So, based on that, the fuzzing potential here seems low. Let's mark `WorthFuzzing=false` for now.

But wait a minute... could this somehow be accessed through something like `netdevsim`, or some other sort of mock device driver? No, `netdevsim` is a completely separate driver, so that wouldn't work. Hmmm, let me quickly double-check if there's any sort of `mlx5` mock driver present in the kernel. This needs a little deeper dive, as a dedicated mock could be the key to controlled fuzzing. Let's see...

8/2 2026/06/22 08:53 tool grepper
0m Args: 
{
  "Expression": "mlx5_core_driver",
  "PathPrefix": ""
}

Results: 
{
  "Output": "drivers/net/ethernet/mellanox/mlx5/core/main.c=2265=int mlx5_recover_device(struct mlx5_core_dev *dev)\n--\ndrivers/net/ethernet/mellanox/mlx5/core/main.c-2275-\ndrivers/net/ethernet/mellanox/mlx5/core/main.c:2276:static struct pci_driver mlx5_core_driver = {\ndrivers/net/ethernet/mellanox/mlx5/core/main.c-2277-\t.name           = KBUILD_MODNAME,\n--\ndrivers/net/ethernet/mellanox/mlx5/core/main.c=2301=struct mlx5_core_dev *mlx5_vf_get_core_dev(struct pci_dev *pdev)\n--\ndrivers/net/ethernet/mellanox/mlx5/core/main.c-2304-\ndrivers/net/ethernet/mellanox/mlx5/core/main.c:2305:\tmdev = pci_iov_get_pf_drvdata(pdev, \u0026mlx5_core_driver);\ndrivers/net/ethernet/mellanox/mlx5/core/main.c-2306-\tif (IS_ERR(mdev))\n--\ndrivers/net/ethernet/mellanox/mlx5/core/main.c=2343=static int __init mlx5_init(void)\n--\ndrivers/net/ethernet/mellanox/mlx5/core/main.c-2362-\ndrivers/net/ethernet/mellanox/mlx5/core/main.c:2363:\terr = pci_register_driver(\u0026mlx5_core_driver);\ndrivers/net/ethernet/mellanox/mlx5/core/main.c-2364-\tif (err)\n--\ndrivers/net/ethernet/mellanox/mlx5/core/main.c=2378=static void __exit mlx5_cleanup(void)\ndrivers/net/ethernet/mellanox/mlx5/core/main.c-2379-{\ndrivers/net/ethernet/mellanox/mlx5/core/main.c:2380:\tpci_unregister_driver(\u0026mlx5_core_driver);\ndrivers/net/ethernet/mellanox/mlx5/core/main.c-2381-\tmlx5_sf_driver_unregister();\n"
}
9/2 2026/06/22 08:53 llm patch-evaluator
0m Model: 
gemini-3.1-pro-preview

Args: 
null

Results: 
null

Tokens: 
							input: 24928
							output: 86
							thoughts: 88

Thoughts: 
Okay, here's my assessment of this situation:

**Unreachable Code in the Mellanox Driver**

Alright, I've taken a look at this patch, and the conclusion is pretty straightforward. There's no point in even considering this code for fuzzing with the standard syzkaller setup. The crucial thing is that this patch targets the Mellanox mlx5 ethernet driver, which is a *hardware-specific PCI driver*. Since syzkaller, in its default configurations for environments like GCE or QEMU, doesn't actually *emulate* Mellanox hardware, the code modified by this patch is simply unreachable during any standard fuzzing runs. It's not a question of complexity or potential for bugs; it's a matter of the hardware being fundamentally absent in the target environments. Therefore, I'm going to set `WorthFuzzing=false`. It’s just not going to be triggered in a way that’s useful for finding vulnerabilities with the resources we have.

10/2 2026/06/22 08:53 tool set-results
0m Args: 
{
  "EnableConfigs": [],
  "FocusSymbols": [],
  "Reasoning": "The patch modifies the Mellanox mlx5 ethernet driver, which is a hardware-specific PCI driver. Since syzkaller does not emulate Mellanox hardware in standard virtualized environments (like GCE or QEMU), this code is unreachable during fuzzing.",
  "WorthFuzzing": false
}

Results: 
{
  "EnableConfigs": null,
  "FocusSymbols": [],
  "Reasoning": "The patch modifies the Mellanox mlx5 ethernet driver, which is a hardware-specific PCI driver. Since syzkaller does not emulate Mellanox hardware in standard virtualized environments (like GCE or QEMU), this code is unreachable during fuzzing.",
  "WorthFuzzing": false
}
LLM Calls Summary:
Total Calls Total Tokens Avg Tokens Total Duration (Seconds) Avg Duration (Seconds)
Tool Calls Summary:
Total Calls Total Duration (Seconds) Avg Duration (Seconds)