last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:47195' (ED25519) to the list of known hosts. syzkaller login: [ 56.594389][ T5744] cgroup: Unknown subsys name 'net' [ 56.725108][ T5744] cgroup: Unknown subsys name 'cpuset' [ 56.730001][ T5744] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 58.069186][ T5744] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 61.977356][ T5808] ------------[ cut here ]------------ [ 61.979149][ T5808] sysctl net/vsock/g2h_fallback: data points to kernel global data: vsock_g2h_fallback [ 61.982353][ T5808] WARNING: net/sysctl_net.c:156 at register_net_sysctl_sz+0x163/0x440, CPU#0: syz-executor/5808 [ 61.985726][ T5808] Modules linked in: [ 61.987442][ T5808] CPU: 0 UID: 0 PID: 5808 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) [ 61.990446][ T5808] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 61.993894][ T5808] RIP: 0010:register_net_sysctl_sz+0x1ad/0x440 [ 61.994381][ T5810] ------------[ cut here ]------------ [ 61.995870][ T5808] Code: 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 ef e8 88 36 c8 f6 4d 8b 44 24 f0 48 89 df 48 8b 74 24 10 4c 89 fa 48 8b 4c 24 18 <67> 48 0f b9 3a 49 bf 00 00 00 00 00 fc ff df 42 0f b6 44 3d 00 84 [ 61.997699][ T5810] sysctl net/vsock/g2h_fallback: data points to kernel global data: vsock_g2h_fallback [ 62.004957][ T5808] RSP: 0018:ffffc90005357ab0 EFLAGS: 00010246 [ 62.007673][ T5810] WARNING: net/sysctl_net.c:156 at register_net_sysctl_sz+0x163/0x440, CPU#1: syz-executor/5810 [ 62.009565][ T5808] RAX: dffffc0000000000 RBX: ffffffff90234820 RCX: ffffffff8d01a100 [ 62.013311][ T5810] Modules linked in: [ 62.015867][ T5808] RDX: ffffffff8d05e680 RSI: ffffffff8d05e620 RDI: ffffffff90234820 [ 62.015879][ T5808] RBP: 1ffff110212d6810 R08: ffffffff8ff4f0c0 R09: ffffffff8e7602e0 [ 62.017294][ T5810] [ 62.019786][ T5808] R10: 0000012400000008 R11: ffffffff9a79ce5c R12: ffff8881096b4088 [ 62.022511][ T5810] CPU: 1 UID: 0 PID: 5810 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) [ 62.023272][ T5808] R13: ffff8881096b4078 R14: 1ffff110212d680f R15: ffffffff8d05e680 [ 62.026163][ T5810] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 62.029213][ T5808] FS: 000055556a136500(0000) GS:ffff88818de66000(0000) knlGS:0000000000000000 [ 62.032385][ T5810] RIP: 0010:register_net_sysctl_sz+0x1ad/0x440 [ 62.035448][ T5808] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.035458][ T5808] CR2: 00007f0c19e52af8 CR3: 0000000112a0e000 CR4: 00000000000006f0 [ 62.039071][ T5810] Code: 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 ef e8 88 36 c8 f6 4d 8b 44 24 f0 48 89 df 48 8b 74 24 10 4c 89 fa 48 8b 4c 24 18 <67> 48 0f b9 3a 49 bf 00 00 00 00 00 fc ff df 42 0f b6 44 3d 00 84 [ 62.041065][ T5808] Call Trace: [ 62.044065][ T5810] RSP: 0018:ffffc90005407ab0 EFLAGS: 00010246 [ 62.046161][ T5808] [ 62.046172][ T5808] vsock_sysctl_init_net+0x13f/0x2f0 [ 62.053294][ T5810] [ 62.054260][ T5808] ops_init+0x35c/0x5c0 [ 62.056480][ T5810] RAX: dffffc0000000000 RBX: ffffffff90234820 RCX: ffffffff8d01a100 [ 62.057385][ T5808] setup_net+0x118/0x340 [ 62.059349][ T5810] RDX: ffffffff8d05e680 RSI: ffffffff8d05e620 RDI: ffffffff90234820 [ 62.060120][ T5808] ? __pfx_setup_net+0x10/0x10 [ 62.061982][ T5810] RBP: 1ffff1102cbf60b0 R08: ffffffff8ff4f0c0 R09: ffffffff8e7602e0 [ 62.064476][ T5808] ? preinit_net+0x47d/0x780 [ 62.066259][ T5810] R10: 0000012400000008 R11: ffffffff9a79ce5c R12: ffff888165fb0588 [ 62.068780][ T5808] copy_net_ns+0x50e/0x730 [ 62.070792][ T5810] R13: ffff888165fb0578 R14: 1ffff1102cbf60af R15: ffffffff8d05e680 [ 62.073432][ T5808] create_new_namespaces+0x3e7/0x6a0 [ 62.073450][ T5808] ? security_capable+0x7e/0x2c0 [ 62.075268][ T5810] FS: 0000555590fea500(0000) GS:ffff8882a9466000(0000) knlGS:0000000000000000 [ 62.077767][ T5808] unshare_nsproxy_namespaces+0x11a/0x160 [ 62.079374][ T5810] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.081964][ T5808] ksys_unshare+0x51d/0x930 [ 62.083876][ T5810] CR2: 00007ffe0a578ff8 CR3: 0000000175972000 CR4: 00000000000006f0 [ 62.085455][ T5808] ? __pfx_ksys_unshare+0x10/0x10 [ 62.089158][ T5810] Call Trace: [ 62.090932][ T5808] __x64_sys_unshare+0x38/0x50 [ 62.093707][ T5810] [ 62.095139][ T5808] do_syscall_64+0x14d/0xf80 [ 62.098279][ T5810] vsock_sysctl_init_net+0x13f/0x2f0 [ 62.099872][ T5808] ? trace_irq_disable+0x3b/0x150 [ 62.100959][ T5810] ops_init+0x35c/0x5c0 [ 62.102612][ T5808] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 62.103762][ T5810] setup_net+0x118/0x340 [ 62.105309][ T5808] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 62.107228][ T5810] ? __pfx_setup_net+0x10/0x10 [ 62.108873][ T5808] RIP: 0033:0x7fd97459da67 [ 62.110643][ T5810] ? preinit_net+0x47d/0x780 [ 62.112638][ T5808] Code: 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 62.112648][ T5808] RSP: 002b:00007fffee0fc138 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 62.112659][ T5808] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd97459da67 [ 62.112665][ T5808] RDX: 00007fd97459c799 RSI: 00007fffee0fc100 RDI: 0000000040000000 [ 62.114439][ T5810] copy_net_ns+0x50e/0x730 [ 62.116300][ T5808] RBP: 00007fffee0fc190 R08: 00007fd9747d9610 R09: 00007fd9747d9610 [ 62.116309][ T5808] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffee0fc198 [ 62.118316][ T5810] create_new_namespaces+0x3e7/0x6a0 [ 62.119719][ T5808] R13: 0000000000000002 R14: 00007fffee0fc378 R15: 0000000000000000 [ 62.119732][ T5808] [ 62.121697][ T5810] ? security_capable+0x7e/0x2c0 [ 62.127704][ T5808] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 62.127715][ T5808] CPU: 0 UID: 0 PID: 5808 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) [ 62.127724][ T5808] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 62.127729][ T5808] Call Trace: [ 62.127734][ T5808] [ 62.127738][ T5808] vpanic+0x56c/0xa60 [ 62.127751][ T5808] ? __pfx__printk+0x10/0x10 [ 62.127758][ T5808] ? __pfx_vpanic+0x10/0x10 [ 62.127767][ T5808] ? is_bpf_text_address+0x292/0x2b0 [ 62.127775][ T5808] ? is_bpf_text_address+0x26/0x2b0 [ 62.127784][ T5808] panic+0xc5/0xd0 [ 62.127793][ T5808] ? __pfx_panic+0x10/0x10 [ 62.127821][ T5808] __warn+0x315/0x4f0 [ 62.127835][ T5808] ? register_net_sysctl_sz+0x163/0x440 [ 62.127848][ T5808] ? register_net_sysctl_sz+0x163/0x440 [ 62.127856][ T5808] __report_bug+0x29a/0x540 [ 62.127866][ T5808] ? __kmalloc_node_track_caller_noprof+0x4db/0x7b0 [ 62.127874][ T5808] ? kmemdup_noprof+0x2b/0x70 [ 62.127883][ T5808] ? vsock_sysctl_init_net+0xe0/0x2f0 [ 62.127893][ T5808] ? register_net_sysctl_sz+0x163/0x440 [ 62.127901][ T5808] ? __pfx___report_bug+0x10/0x10 [ 62.127915][ T5808] report_bug_entry+0x19a/0x290 [ 62.127925][ T5808] ? register_net_sysctl_sz+0x1ad/0x440 [ 62.127933][ T5808] ? register_net_sysctl_sz+0x1b2/0x440 [ 62.127941][ T5808] handle_bug+0xca/0x200 [ 62.127949][ T5808] exc_invalid_op+0x1a/0x50 [ 62.127956][ T5808] asm_exc_invalid_op+0x1a/0x20 [ 62.127963][ T5808] RIP: 0010:register_net_sysctl_sz+0x1ad/0x440 [ 62.127973][ T5808] Code: 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 ef e8 88 36 c8 f6 4d 8b 44 24 f0 48 89 df 48 8b 74 24 10 4c 89 fa 48 8b 4c 24 18 <67> 48 0f b9 3a 49 bf 00 00 00 00 00 fc ff df 42 0f b6 44 3d 00 84 [ 62.127979][ T5808] RSP: 0018:ffffc90005357ab0 EFLAGS: 00010246 [ 62.127987][ T5808] RAX: dffffc0000000000 RBX: ffffffff90234820 RCX: ffffffff8d01a100 [ 62.127992][ T5808] RDX: ffffffff8d05e680 RSI: ffffffff8d05e620 RDI: ffffffff90234820 [ 62.127998][ T5808] RBP: 1ffff110212d6810 R08: ffffffff8ff4f0c0 R09: ffffffff8e7602e0 [ 62.128003][ T5808] R10: 0000012400000008 R11: ffffffff9a79ce5c R12: ffff8881096b4088 [ 62.128008][ T5808] R13: ffff8881096b4078 R14: 1ffff110212d680f R15: ffffffff8d05e680 [ 62.128021][ T5808] vsock_sysctl_init_net+0x13f/0x2f0 [ 62.128031][ T5808] ops_init+0x35c/0x5c0 [ 62.128044][ T5808] setup_net+0x118/0x340 [ 62.128054][ T5808] ? __pfx_setup_net+0x10/0x10 [ 62.128063][ T5808] ? preinit_net+0x47d/0x780 [ 62.128072][ T5808] copy_net_ns+0x50e/0x730 [ 62.128082][ T5808] create_new_namespaces+0x3e7/0x6a0 [ 62.128093][ T5808] ? security_capable+0x7e/0x2c0 [ 62.128104][ T5808] unshare_nsproxy_namespaces+0x11a/0x160 [ 62.128114][ T5808] ksys_unshare+0x51d/0x930 [ 62.128128][ T5808] ? __pfx_ksys_unshare+0x10/0x10 [ 62.128141][ T5808] __x64_sys_unshare+0x38/0x50 [ 62.128152][ T5808] do_syscall_64+0x14d/0xf80 [ 62.128161][ T5808] ? trace_irq_disable+0x3b/0x150 [ 62.128172][ T5808] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 62.128180][ T5808] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 62.128188][ T5808] RIP: 0033:0x7fd97459da67 [ 62.128195][ T5808] Code: 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 62.128201][ T5808] RSP: 002b:00007fffee0fc138 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 62.128208][ T5808] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd97459da67 [ 62.128213][ T5808] RDX: 00007fd97459c799 RSI: 00007fffee0fc100 RDI: 0000000040000000 [ 62.128218][ T5808] RBP: 00007fffee0fc190 R08: 00007fd9747d9610 R09: 00007fd9747d9610 [ 62.128223][ T5808] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffee0fc198 [ 62.128227][ T5808] R13: 0000000000000002 R14: 00007fffee0fc378 R15: 0000000000000000 [ 62.128265][ T5808] [ 62.131876][ T5808] Kernel Offset: disabled