[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 80.524543][ T26] audit: type=1800 audit(1578702908.182:25): pid=9225 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 80.544364][ T26] audit: type=1800 audit(1578702908.182:26): pid=9225 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 80.564735][ T26] audit: type=1800 audit(1578702908.182:27): pid=9225 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. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.139' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 110.274757][ T9379] kasan: CONFIG_KASAN_INLINE enabled [ 110.280088][ T9379] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 110.288209][ T9379] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 110.295139][ T9379] CPU: 1 PID: 9379 Comm: syz-executor985 Not tainted 5.5.0-rc5-syzkaller #0 [ 110.303781][ T9379] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 110.313817][ T9379] RIP: 0010:xt_rateest_put+0xa1/0x440 [ 110.319163][ T9379] 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 [ 110.338738][ T9379] RSP: 0018:ffffc90001d37940 EFLAGS: 00010202 [ 110.344777][ T9379] RAX: dffffc0000000000 RBX: ffff8880a6fa0600 RCX: ffffffff8673a332 [ 110.352724][ T9379] RDX: 000000000000026d RSI: ffffffff8673a0b9 RDI: 0000000000001368 [ 110.360671][ T9379] RBP: ffffc90001d37970 R08: ffff88808d636100 R09: ffffed1015d2703d [ 110.368615][ T9379] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 000000000000002d [ 110.376561][ T9379] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8673a470 [ 110.384513][ T9379] FS: 00000000019e4880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 110.393430][ T9379] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 110.399996][ T9379] CR2: 00000000200008e0 CR3: 00000000a34be000 CR4: 00000000001406e0 [ 110.408014][ T9379] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 110.415968][ T9379] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 110.423912][ T9379] Call Trace: [ 110.427186][ T9379] ? xt_rateest_put+0x440/0x440 [ 110.432021][ T9379] xt_rateest_tg_destroy+0x72/0xa0 [ 110.437119][ T9379] ? xt_percpu_counter_free+0x8f/0xd0 [ 110.442475][ T9379] translate_table+0x11f4/0x1d80 [ 110.447407][ T9379] ? arpt_alloc_initial_table+0x690/0x690 [ 110.453103][ T9379] ? lock_downgrade+0x920/0x920 [ 110.457944][ T9379] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 110.464173][ T9379] ? _copy_from_user+0x12c/0x1a0 [ 110.469096][ T9379] do_arpt_set_ctl+0x317/0x650 [ 110.473848][ T9379] ? __do_replace+0xa80/0xa80 [ 110.478500][ T9379] ? __mutex_unlock_slowpath+0xf0/0x6a0 [ 110.484035][ T9379] ? ___might_sleep+0x163/0x2c0 [ 110.488867][ T9379] ? wait_for_completion+0x440/0x440 [ 110.494129][ T9379] ? mutex_unlock+0xd/0x10 [ 110.498520][ T9379] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 110.504520][ T9379] nf_setsockopt+0x77/0xd0 [ 110.508914][ T9379] ip_setsockopt+0xdf/0x100 [ 110.513394][ T9379] udp_setsockopt+0x68/0xb0 [ 110.517870][ T9379] sock_common_setsockopt+0x94/0xd0 [ 110.523048][ T9379] __sys_setsockopt+0x261/0x4c0 [ 110.527875][ T9379] ? sock_create_kern+0x50/0x50 [ 110.532701][ T9379] ? down_read_non_owner+0x490/0x490 [ 110.537963][ T9379] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 110.544180][ T9379] ? handle_mm_fault+0x4ab/0xa50 [ 110.549098][ T9379] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 110.554534][ T9379] ? do_syscall_64+0x26/0x790 [ 110.559203][ T9379] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 110.565254][ T9379] ? do_syscall_64+0x26/0x790 [ 110.569910][ T9379] __x64_sys_setsockopt+0xbe/0x150 [ 110.575001][ T9379] do_syscall_64+0xfa/0x790 [ 110.579486][ T9379] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 110.585360][ T9379] RIP: 0033:0x441699 [ 110.589230][ T9379] 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 [ 110.608859][ T9379] RSP: 002b:00007ffc71d02648 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 110.617250][ T9379] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441699 [ 110.625251][ T9379] RDX: 0000000000000060 RSI: 0a02000000000000 RDI: 0000000000000003 [ 110.633199][ T9379] RBP: 00000000006cb018 R08: 0000000000000430 R09: 00000000004002c8 [ 110.641144][ T9379] R10: 00000000200008c0 R11: 0000000000000246 R12: 0000000000402f20 [ 110.649093][ T9379] R13: 0000000000402fb0 R14: 0000000000000000 R15: 0000000000000000 [ 110.657057][ T9379] Modules linked in: [ 110.661570][ T9379] ---[ end trace 447788901bb8a7bf ]--- [ 110.667065][ T9379] RIP: 0010:xt_rateest_put+0xa1/0x440 [ 110.672500][ T9379] 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 [ 110.692123][ T9379] RSP: 0018:ffffc90001d37940 EFLAGS: 00010202 [ 110.698221][ T9379] RAX: dffffc0000000000 RBX: ffff8880a6fa0600 RCX: ffffffff8673a332 [ 110.706202][ T9379] RDX: 000000000000026d RSI: ffffffff8673a0b9 RDI: 0000000000001368 [ 110.714191][ T9379] RBP: ffffc90001d37970 R08: ffff88808d636100 R09: ffffed1015d2703d [ 110.722150][ T9379] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 000000000000002d [ 110.730138][ T9379] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8673a470 [ 110.738136][ T9379] FS: 00000000019e4880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 110.747064][ T9379] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 110.753653][ T9379] CR2: 00000000200008e0 CR3: 00000000a34be000 CR4: 00000000001406e0 [ 110.761614][ T9379] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 110.769607][ T9379] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 110.777585][ T9379] Kernel panic - not syncing: Fatal exception [ 110.784842][ T9379] Kernel Offset: disabled [ 110.789159][ T9379] Rebooting in 86400 seconds..