[ 102.129116][ T27] audit: type=1800 audit(1578701192.374:40): pid=10008 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 104.918114][ T27] audit: type=1400 audit(1578701195.184:41): avc: denied { map } for pid=10186 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.84' (ECDSA) to the list of known hosts. executing program [ 111.695905][ T27] audit: type=1400 audit(1578701201.964:42): avc: denied { map } for pid=10198 comm="syz-executor142" path="/root/syz-executor142572560" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 111.732044][T10198] kasan: CONFIG_KASAN_INLINE enabled [ 111.737498][T10198] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 111.745913][T10198] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 111.752877][T10198] CPU: 0 PID: 10198 Comm: syz-executor142 Not tainted 5.5.0-rc5-syzkaller #0 [ 111.762160][T10198] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 111.772208][T10198] RIP: 0010:xt_rateest_put+0xa1/0x440 [ 111.777575][T10198] Code: 85 87 01 fb 45 84 f6 0f 84 68 02 00 00 e8 37 86 01 fb 49 8d bd 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 6c 03 00 00 4d 8b b5 68 13 00 00 e8 29 bf ed fa [ 111.797879][T10198] RSP: 0018:ffffc90001d97940 EFLAGS: 00010202 [ 111.803941][T10198] RAX: dffffc0000000000 RBX: ffff8880a666bb00 RCX: ffffffff8673a332 [ 111.812035][T10198] RDX: 000000000000026d RSI: ffffffff8673a0b9 RDI: 0000000000001368 [ 111.821182][T10198] RBP: ffffc90001d97970 R08: ffff8880929f2240 R09: ffffed1015d0703d [ 111.829151][T10198] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 000000000000002d [ 111.837229][T10198] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8673a470 [ 111.845294][T10198] FS: 00000000023b5880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 111.854205][T10198] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 111.860767][T10198] CR2: 0000563c4509e130 CR3: 00000000a454d000 CR4: 00000000001406f0 [ 111.868725][T10198] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 111.876684][T10198] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 111.884647][T10198] Call Trace: [ 111.887935][T10198] ? xt_rateest_put+0x440/0x440 [ 111.892765][T10198] xt_rateest_tg_destroy+0x72/0xa0 [ 111.897872][T10198] ? xt_percpu_counter_free+0x8f/0xd0 [ 111.903231][T10198] translate_table+0x11f4/0x1d80 [ 111.908169][T10198] ? arpt_alloc_initial_table+0x690/0x690 [ 111.913867][T10198] ? lock_downgrade+0x920/0x920 [ 111.918698][T10198] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 111.924914][T10198] ? _copy_from_user+0x12c/0x1a0 [ 111.929838][T10198] do_arpt_set_ctl+0x317/0x650 [ 111.934600][T10198] ? __do_replace+0xa80/0xa80 [ 111.939263][T10198] ? __mutex_unlock_slowpath+0xf0/0x6a0 [ 111.944785][T10198] ? mark_lock+0xc2/0x1220 [ 111.949178][T10198] ? wait_for_completion+0x440/0x440 [ 111.954453][T10198] ? mutex_unlock+0xd/0x10 [ 111.958849][T10198] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 111.964846][T10198] nf_setsockopt+0x77/0xd0 [ 111.969250][T10198] ip_setsockopt+0xdf/0x100 [ 111.974032][T10198] udp_setsockopt+0x68/0xb0 [ 111.978532][T10198] sock_common_setsockopt+0x94/0xd0 [ 111.983727][T10198] __sys_setsockopt+0x261/0x4c0 [ 111.988577][T10198] ? sock_create_kern+0x50/0x50 [ 111.993419][T10198] ? down_read_non_owner+0x490/0x490 [ 111.998698][T10198] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 112.004922][T10198] ? handle_mm_fault+0x4ab/0xa50 [ 112.009845][T10198] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 112.015301][T10198] ? do_syscall_64+0x26/0x790 [ 112.019958][T10198] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 112.026013][T10198] ? do_syscall_64+0x26/0x790 [ 112.030681][T10198] __x64_sys_setsockopt+0xbe/0x150 [ 112.035782][T10198] do_syscall_64+0xfa/0x790 [ 112.040282][T10198] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 112.046152][T10198] RIP: 0033:0x441699 [ 112.050041][T10198] 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 [ 112.069796][T10198] RSP: 002b:00007ffde3c39748 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 112.078187][T10198] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441699 [ 112.086404][T10198] RDX: 0000000000000060 RSI: 0a02000000000000 RDI: 0000000000000003 [ 112.094363][T10198] RBP: 00000000006cb018 R08: 0000000000000430 R09: 00000000004002c8 [ 112.103189][T10198] R10: 00000000200008c0 R11: 0000000000000246 R12: 0000000000402f20 [ 112.111158][T10198] R13: 0000000000402fb0 R14: 0000000000000000 R15: 0000000000000000 [ 112.119175][T10198] Modules linked in: [ 112.124578][T10198] ---[ end trace 286a3db1d648e123 ]--- [ 112.130138][T10198] RIP: 0010:xt_rateest_put+0xa1/0x440 [ 112.135608][T10198] Code: 85 87 01 fb 45 84 f6 0f 84 68 02 00 00 e8 37 86 01 fb 49 8d bd 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 6c 03 00 00 4d 8b b5 68 13 00 00 e8 29 bf ed fa [ 112.155397][T10198] RSP: 0018:ffffc90001d97940 EFLAGS: 00010202 [ 112.162028][T10198] RAX: dffffc0000000000 RBX: ffff8880a666bb00 RCX: ffffffff8673a332 [ 112.170013][T10198] RDX: 000000000000026d RSI: ffffffff8673a0b9 RDI: 0000000000001368 [ 112.178158][T10198] RBP: ffffc90001d97970 R08: ffff8880929f2240 R09: ffffed1015d0703d [ 112.186173][T10198] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 000000000000002d [ 112.194187][T10198] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8673a470 [ 112.202181][T10198] FS: 00000000023b5880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 112.211089][T10198] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 112.217931][T10198] CR2: 000055d9ed67e008 CR3: 00000000a454d000 CR4: 00000000001406e0 [ 112.227222][T10198] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 112.235282][T10198] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 112.243289][T10198] Kernel panic - not syncing: Fatal exception [ 112.251061][T10198] Kernel Offset: disabled [ 112.256101][T10198] Rebooting in 86400 seconds..