[ 85.856795][ T27] audit: type=1800 audit(1578701470.474:26): pid=9509 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 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. [ 86.965682][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 86.965694][ T27] audit: type=1800 audit(1578701471.594:29): pid=9509 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 86.992519][ T27] audit: type=1800 audit(1578701471.594:30): pid=9509 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.69' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 100.145744][ T9662] kasan: CONFIG_KASAN_INLINE enabled [ 100.151170][ T9662] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 100.159363][ T9662] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 100.166294][ T9662] CPU: 0 PID: 9662 Comm: syz-executor869 Not tainted 5.5.0-rc5-syzkaller #0 [ 100.174944][ T9662] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.185006][ T9662] RIP: 0010:xt_rateest_put+0xa1/0x440 [ 100.190378][ T9662] 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 [ 100.209984][ T9662] RSP: 0018:ffffc90001e97940 EFLAGS: 00010202 [ 100.216127][ T9662] RAX: dffffc0000000000 RBX: ffff8880a6b56b00 RCX: ffffffff8673a332 [ 100.224092][ T9662] RDX: 000000000000026d RSI: ffffffff8673a0b9 RDI: 0000000000001368 [ 100.232047][ T9662] RBP: ffffc90001e97970 R08: ffff88808d9d4240 R09: ffffed1015d0703d [ 100.240013][ T9662] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 000000000000002d [ 100.247966][ T9662] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8673a470 [ 100.255931][ T9662] FS: 0000000000cff880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 100.264842][ T9662] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.271501][ T9662] CR2: 00000000200008e0 CR3: 000000009e5be000 CR4: 00000000001406f0 [ 100.279465][ T9662] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.287431][ T9662] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.295396][ T9662] Call Trace: [ 100.298681][ T9662] ? xt_rateest_put+0x440/0x440 [ 100.303537][ T9662] xt_rateest_tg_destroy+0x72/0xa0 [ 100.308968][ T9662] ? xt_percpu_counter_free+0x8f/0xd0 [ 100.314356][ T9662] translate_table+0x11f4/0x1d80 [ 100.319292][ T9662] ? arpt_alloc_initial_table+0x690/0x690 [ 100.325142][ T9662] ? lock_downgrade+0x920/0x920 [ 100.329999][ T9662] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 100.336243][ T9662] ? _copy_from_user+0x12c/0x1a0 [ 100.341222][ T9662] do_arpt_set_ctl+0x317/0x650 [ 100.345988][ T9662] ? __do_replace+0xa80/0xa80 [ 100.350659][ T9662] ? __mutex_unlock_slowpath+0xf0/0x6a0 [ 100.356198][ T9662] ? ___might_sleep+0x163/0x2c0 [ 100.361052][ T9662] ? wait_for_completion+0x440/0x440 [ 100.366334][ T9662] ? mutex_unlock+0xd/0x10 [ 100.370747][ T9662] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 100.376711][ T9662] nf_setsockopt+0x77/0xd0 [ 100.381125][ T9662] ip_setsockopt+0xdf/0x100 [ 100.385614][ T9662] udp_setsockopt+0x68/0xb0 [ 100.390111][ T9662] sock_common_setsockopt+0x94/0xd0 [ 100.395308][ T9662] __sys_setsockopt+0x261/0x4c0 [ 100.400144][ T9662] ? sock_create_kern+0x50/0x50 [ 100.404990][ T9662] ? down_read_non_owner+0x490/0x490 [ 100.410272][ T9662] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 100.416514][ T9662] ? handle_mm_fault+0x4ab/0xa50 [ 100.421457][ T9662] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 100.426901][ T9662] ? do_syscall_64+0x26/0x790 [ 100.431560][ T9662] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 100.437634][ T9662] ? do_syscall_64+0x26/0x790 [ 100.442378][ T9662] __x64_sys_setsockopt+0xbe/0x150 [ 100.447493][ T9662] do_syscall_64+0xfa/0x790 [ 100.451994][ T9662] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 100.457867][ T9662] RIP: 0033:0x441699 [ 100.461760][ T9662] 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 [ 100.481369][ T9662] RSP: 002b:00007ffcc79796b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 100.489762][ T9662] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441699 [ 100.497716][ T9662] RDX: 0000000000000060 RSI: 0a02000000000000 RDI: 0000000000000003 [ 100.505692][ T9662] RBP: 00000000006cb018 R08: 0000000000000430 R09: 00000000004002c8 [ 100.513657][ T9662] R10: 00000000200008c0 R11: 0000000000000246 R12: 0000000000402f20 [ 100.521623][ T9662] R13: 0000000000402fb0 R14: 0000000000000000 R15: 0000000000000000 [ 100.529590][ T9662] Modules linked in: [ 100.534026][ T9662] ---[ end trace 1ba408a0a6dea5d6 ]--- [ 100.539556][ T9662] RIP: 0010:xt_rateest_put+0xa1/0x440 [ 100.544975][ T9662] 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 [ 100.565149][ T9662] RSP: 0018:ffffc90001e97940 EFLAGS: 00010202 [ 100.571402][ T9662] RAX: dffffc0000000000 RBX: ffff8880a6b56b00 RCX: ffffffff8673a332 [ 100.579409][ T9662] RDX: 000000000000026d RSI: ffffffff8673a0b9 RDI: 0000000000001368 [ 100.587425][ T9662] RBP: ffffc90001e97970 R08: ffff88808d9d4240 R09: ffffed1015d0703d [ 100.595396][ T9662] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 000000000000002d [ 100.603790][ T9662] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8673a470 [ 100.611859][ T9662] FS: 0000000000cff880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 100.620824][ T9662] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.627441][ T9662] CR2: 00000000200008e0 CR3: 000000009e5be000 CR4: 00000000001406f0 [ 100.635412][ T9662] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.643421][ T9662] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.651426][ T9662] Kernel panic - not syncing: Fatal exception [ 100.658816][ T9662] Kernel Offset: disabled [ 100.663140][ T9662] Rebooting in 86400 seconds..