[ 79.501626][ T28] audit: type=1800 audit(1578704081.797:26): pid=9507 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. [ 80.475543][ T28] kauditd_printk_skb: 2 callbacks suppressed [ 80.475556][ T28] audit: type=1800 audit(1578704082.797:29): pid=9507 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 [ 80.501634][ T28] audit: type=1800 audit(1578704082.797:30): pid=9507 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 '10.128.0.120' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 89.773618][ T9657] kasan: CONFIG_KASAN_INLINE enabled [ 89.779413][ T9657] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 89.787598][ T9657] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 89.794558][ T9657] CPU: 0 PID: 9657 Comm: syz-executor941 Not tainted 5.5.0-rc5-syzkaller #0 [ 89.803227][ T9657] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.813707][ T9657] RIP: 0010:xt_rateest_put+0xa1/0x440 [ 89.819059][ T9657] 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 [ 89.838954][ T9657] RSP: 0018:ffffc90001e07940 EFLAGS: 00010202 [ 89.845010][ T9657] RAX: dffffc0000000000 RBX: ffff8880a6f6d400 RCX: ffffffff8673a332 [ 89.852976][ T9657] RDX: 000000000000026d RSI: ffffffff8673a0b9 RDI: 0000000000001368 [ 89.860939][ T9657] RBP: ffffc90001e07970 R08: ffff8880a82b80c0 R09: ffffed1015d0703d [ 89.869115][ T9657] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 000000000000002d [ 89.877441][ T9657] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8673a470 [ 89.885520][ T9657] FS: 00000000015ba880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 89.894557][ T9657] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.901303][ T9657] CR2: 00000000200008e0 CR3: 00000000a5164000 CR4: 00000000001406f0 [ 89.909294][ T9657] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.917502][ T9657] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.925479][ T9657] Call Trace: [ 89.928761][ T9657] ? xt_rateest_put+0x440/0x440 [ 89.933629][ T9657] xt_rateest_tg_destroy+0x72/0xa0 [ 89.940263][ T9657] ? xt_percpu_counter_free+0x8f/0xd0 [ 89.945623][ T9657] translate_table+0x11f4/0x1d80 [ 89.950562][ T9657] ? arpt_alloc_initial_table+0x690/0x690 [ 89.956281][ T9657] ? lock_downgrade+0x920/0x920 [ 89.961126][ T9657] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 89.967349][ T9657] ? _copy_from_user+0x12c/0x1a0 [ 89.972272][ T9657] do_arpt_set_ctl+0x317/0x650 [ 89.977018][ T9657] ? __do_replace+0xa80/0xa80 [ 89.981676][ T9657] ? __mutex_unlock_slowpath+0xf0/0x6a0 [ 89.987567][ T9657] ? ___might_sleep+0x163/0x2c0 [ 89.992450][ T9657] ? wait_for_completion+0x440/0x440 [ 89.998697][ T9657] ? mutex_unlock+0xd/0x10 [ 90.003126][ T9657] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 90.009096][ T9657] nf_setsockopt+0x77/0xd0 [ 90.013537][ T9657] ip_setsockopt+0xdf/0x100 [ 90.018031][ T9657] udp_setsockopt+0x68/0xb0 [ 90.022551][ T9657] sock_common_setsockopt+0x94/0xd0 [ 90.027744][ T9657] __sys_setsockopt+0x261/0x4c0 [ 90.032616][ T9657] ? sock_create_kern+0x50/0x50 [ 90.037556][ T9657] ? down_read_non_owner+0x490/0x490 [ 90.042870][ T9657] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 90.049121][ T9657] ? handle_mm_fault+0x4ab/0xa50 [ 90.054067][ T9657] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 90.059638][ T9657] ? do_syscall_64+0x26/0x790 [ 90.064306][ T9657] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 90.070378][ T9657] ? do_syscall_64+0x26/0x790 [ 90.075047][ T9657] __x64_sys_setsockopt+0xbe/0x150 [ 90.080284][ T9657] do_syscall_64+0xfa/0x790 [ 90.084801][ T9657] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 90.090696][ T9657] RIP: 0033:0x441699 [ 90.094577][ T9657] 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 [ 90.114186][ T9657] RSP: 002b:00007ffd14a65dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 90.122604][ T9657] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441699 [ 90.130583][ T9657] RDX: 0000000000000060 RSI: 0a02000000000000 RDI: 0000000000000003 [ 90.138551][ T9657] RBP: 00000000006cb018 R08: 0000000000000430 R09: 00000000004002c8 [ 90.146524][ T9657] R10: 00000000200008c0 R11: 0000000000000246 R12: 0000000000402f20 [ 90.154505][ T9657] R13: 0000000000402fb0 R14: 0000000000000000 R15: 0000000000000000 [ 90.162496][ T9657] Modules linked in: [ 90.167152][ T9657] ---[ end trace 2ee646fbe5653035 ]--- [ 90.172631][ T9657] RIP: 0010:xt_rateest_put+0xa1/0x440 [ 90.178194][ T9657] 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 [ 90.197831][ T9657] RSP: 0018:ffffc90001e07940 EFLAGS: 00010202 [ 90.204043][ T9657] RAX: dffffc0000000000 RBX: ffff8880a6f6d400 RCX: ffffffff8673a332 [ 90.212178][ T9657] RDX: 000000000000026d RSI: ffffffff8673a0b9 RDI: 0000000000001368 [ 90.220188][ T9657] RBP: ffffc90001e07970 R08: ffff8880a82b80c0 R09: ffffed1015d0703d [ 90.228180][ T9657] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 000000000000002d [ 90.236169][ T9657] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8673a470 [ 90.244164][ T9657] FS: 00000000015ba880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 90.253105][ T9657] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.259739][ T9657] CR2: 00000000200008e0 CR3: 00000000a5164000 CR4: 00000000001406f0 [ 90.267740][ T9657] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 90.275736][ T9657] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 90.283723][ T9657] Kernel panic - not syncing: Fatal exception [ 90.291175][ T9657] Kernel Offset: disabled [ 90.295650][ T9657] Rebooting in 86400 seconds..