[ 70.751403][ T27] audit: type=1800 audit(1577497328.625:25): pid=8811 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 70.773086][ T27] audit: type=1800 audit(1577497328.625:26): pid=8811 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 70.830093][ T27] audit: type=1800 audit(1577497328.625:27): pid=8811 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 71.237846][ T8877] sshd (8877) used greatest stack depth: 22888 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.31' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 86.121469][ T8968] kasan: CONFIG_KASAN_INLINE enabled [ 86.121486][ T8968] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 86.121500][ T8968] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 86.121511][ T8968] CPU: 0 PID: 8968 Comm: syz-executor781 Not tainted 5.5.0-rc2-syzkaller #0 [ 86.121525][ T8968] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.160476][ T8968] RIP: 0010:nf_ct_netns_do_get+0xd2/0x7e0 [ 86.166206][ T8968] Code: 22 22 fb 45 84 f6 0f 84 5c 03 00 00 e8 07 21 22 fb 49 8d bc 24 68 13 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 9f 06 00 00 4d 8b b4 24 68 13 00 00 e8 47 59 0e [ 86.185789][ T8968] RSP: 0018:ffffc90001ec77a8 EFLAGS: 00010202 [ 86.191878][ T8968] RAX: dffffc0000000000 RBX: 0000000000000003 RCX: ffffffff86531056 [ 86.199824][ T8968] RDX: 000000000000026d RSI: ffffffff86530ce9 RDI: 0000000000001368 [ 86.207800][ T8968] RBP: ffffc90001ec77e8 R08: ffff888093976080 R09: ffffed1015d0703d [ 86.215749][ T8968] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 86.223694][ T8968] R13: 000000000000002a R14: 0000000000000001 R15: 0000000000000003 [ 86.231637][ T8968] FS: 000000000265f880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 86.240538][ T8968] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.247095][ T8968] CR2: 00000000200008a0 CR3: 000000009f6d5000 CR4: 00000000001406f0 [ 86.255043][ T8968] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 86.263028][ T8968] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 86.270971][ T8968] Call Trace: [ 86.274271][ T8968] ? lock_downgrade+0x920/0x920 [ 86.279099][ T8968] nf_ct_netns_get+0x41/0x150 [ 86.283748][ T8968] connmark_tg_check+0x61/0xe0 [ 86.288485][ T8968] ? connmark_mt_destroy+0x80/0x80 [ 86.293614][ T8968] xt_check_target+0x283/0x690 [ 86.298353][ T8968] ? textify_hooks.constprop.0+0x1a0/0x1a0 [ 86.304133][ T8968] ? mutex_unlock+0xd/0x10 [ 86.308525][ T8968] ? xt_find_target+0x73/0x280 [ 86.313265][ T8968] ? xt_find_target+0x73/0x280 [ 86.318098][ T8968] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 86.324317][ T8968] translate_table+0x1005/0x1d70 [ 86.329229][ T8968] ? arpt_alloc_initial_table+0x690/0x690 [ 86.334924][ T8968] ? lock_downgrade+0x920/0x920 [ 86.339753][ T8968] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 86.345967][ T8968] ? _copy_from_user+0x12c/0x1a0 [ 86.350901][ T8968] do_arpt_set_ctl+0x310/0x640 [ 86.355639][ T8968] ? __do_replace+0xa80/0xa80 [ 86.360292][ T8968] ? __mutex_unlock_slowpath+0xf0/0x6a0 [ 86.365809][ T8968] ? ___might_sleep+0x163/0x2c0 [ 86.370631][ T8968] ? wait_for_completion+0x440/0x440 [ 86.375888][ T8968] ? mutex_unlock+0xd/0x10 [ 86.380279][ T8968] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 86.386234][ T8968] nf_setsockopt+0x77/0xd0 [ 86.390637][ T8968] ip_setsockopt+0xdf/0x100 [ 86.395132][ T8968] udp_setsockopt+0x68/0xb0 [ 86.399612][ T8968] sock_common_setsockopt+0x94/0xd0 [ 86.404788][ T8968] __sys_setsockopt+0x261/0x4c0 [ 86.409613][ T8968] ? sock_create_kern+0x50/0x50 [ 86.414451][ T8968] ? down_read_non_owner+0x490/0x490 [ 86.419807][ T8968] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 86.426035][ T8968] ? handle_mm_fault+0x4ab/0xa50 [ 86.430951][ T8968] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 86.436384][ T8968] ? do_syscall_64+0x26/0x790 [ 86.441035][ T8968] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 86.447072][ T8968] ? do_syscall_64+0x26/0x790 [ 86.451737][ T8968] __x64_sys_setsockopt+0xbe/0x150 [ 86.456822][ T8968] do_syscall_64+0xfa/0x790 [ 86.461303][ T8968] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 86.467166][ T8968] RIP: 0033:0x441369 [ 86.471039][ T8968] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 86.490730][ T8968] RSP: 002b:00007ffc1bd9ae08 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 86.499117][ T8968] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441369 [ 86.507076][ T8968] RDX: 0000000000000060 RSI: 0a02000000000000 RDI: 0000000000000003 [ 86.515058][ T8968] RBP: 00000000006cb018 R08: 0000000000000418 R09: 00000000004002c8 [ 86.523004][ T8968] R10: 0000000020000880 R11: 0000000000000246 R12: 0000000000402bf0 [ 86.530952][ T8968] R13: 0000000000402c80 R14: 0000000000000000 R15: 0000000000000000 [ 86.538908][ T8968] Modules linked in: [ 86.543077][ T8968] ---[ end trace 313dd2c0a14772c9 ]--- [ 86.548556][ T8968] RIP: 0010:nf_ct_netns_do_get+0xd2/0x7e0 [ 86.554618][ T8968] Code: 22 22 fb 45 84 f6 0f 84 5c 03 00 00 e8 07 21 22 fb 49 8d bc 24 68 13 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 9f 06 00 00 4d 8b b4 24 68 13 00 00 e8 47 59 0e [ 86.574259][ T8968] RSP: 0018:ffffc90001ec77a8 EFLAGS: 00010202 [ 86.580318][ T8968] RAX: dffffc0000000000 RBX: 0000000000000003 RCX: ffffffff86531056 [ 86.588301][ T8968] RDX: 000000000000026d RSI: ffffffff86530ce9 RDI: 0000000000001368 [ 86.596346][ T8968] RBP: ffffc90001ec77e8 R08: ffff888093976080 R09: ffffed1015d0703d [ 86.604334][ T8968] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 86.612330][ T8968] R13: 000000000000002a R14: 0000000000000001 R15: 0000000000000003 [ 86.620286][ T8968] FS: 000000000265f880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 86.629218][ T8968] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.635805][ T8968] CR2: 00000000200008a0 CR3: 000000009f6d5000 CR4: 00000000001406f0 [ 86.643784][ T8968] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 86.651773][ T8968] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 86.659716][ T8968] Kernel panic - not syncing: Fatal exception [ 86.666933][ T8968] Kernel Offset: disabled [ 86.671253][ T8968] Rebooting in 86400 seconds..