[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 61.031840][ T26] audit: type=1800 audit(1569057455.359:25): pid=8726 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 61.073038][ T26] audit: type=1800 audit(1569057455.369:26): pid=8726 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 61.123911][ T26] audit: type=1800 audit(1569057455.369:27): pid=8726 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 '10.128.0.10' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 69.580416][ T8878] FAULT_INJECTION: forcing a failure. [ 69.580416][ T8878] name failslab, interval 1, probability 0, space 0, times 1 [ 69.593452][ T8878] CPU: 1 PID: 8878 Comm: syz-executor835 Not tainted 5.3.0+ #0 [ 69.601253][ T8878] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.611300][ T8878] Call Trace: [ 69.614583][ T8878] dump_stack+0x172/0x1f0 [ 69.618898][ T8878] should_fail.cold+0xa/0x15 [ 69.623480][ T8878] ? __kasan_check_read+0x11/0x20 [ 69.628494][ T8878] ? fault_create_debugfs_attr+0x180/0x180 [ 69.635060][ T8878] ? __fget+0x384/0x560 [ 69.639404][ T8878] __should_failslab+0x121/0x190 [ 69.644388][ T8878] should_failslab+0x9/0x14 [ 69.648921][ T8878] kmem_cache_alloc_trace+0x4b/0x790 [ 69.654194][ T8878] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 69.660425][ T8878] xsk_map_update_elem+0x255/0xac0 [ 69.665531][ T8878] ? xsk_map_free+0x90/0x90 [ 69.670030][ T8878] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.676253][ T8878] ? __kasan_check_read+0x11/0x20 [ 69.681259][ T8878] ? xsk_map_free+0x90/0x90 [ 69.685754][ T8878] map_update_elem+0xc82/0x10b0 [ 69.690599][ T8878] __do_sys_bpf+0x8b5/0x3350 [ 69.695225][ T8878] ? bpf_prog_load+0x1660/0x1660 [ 69.700152][ T8878] ? rcu_read_lock_any_held+0xcd/0xf0 [ 69.705519][ T8878] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 69.710787][ T8878] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.717014][ T8878] ? __sb_end_write+0x11a/0x1a0 [ 69.721842][ T8878] ? vfs_write+0x160/0x5d0 [ 69.726274][ T8878] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 69.731721][ T8878] ? do_syscall_64+0x26/0x760 [ 69.736570][ T8878] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.742625][ T8878] ? do_syscall_64+0x26/0x760 [ 69.747299][ T8878] __x64_sys_bpf+0x73/0xb0 [ 69.751705][ T8878] do_syscall_64+0xfa/0x760 [ 69.756191][ T8878] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.763033][ T8878] RIP: 0033:0x440709 [ 69.766907][ T8878] 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 5b 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 69.786497][ T8878] RSP: 002b:00007ffef4503478 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 69.795025][ T8878] RAX: ffffffffffffffda RBX: 00007ffef4503480 RCX: 0000000000440709 [ 69.803152][ T8878] RDX: 0000000000000020 RSI: 0000000020000100 RDI: 0000000000000002 [ 69.811485][ T8878] RBP: 0000000000000005 R08: 0000000000000001 R09: 00007ffef4500033 [ 69.819714][ T8878] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ff0 [ 69.827949][ T8878] R13: 0000000000402080 R14: 0000000000000000 R15: 0000000000000000 [ 69.836687][ T8878] kasan: CONFIG_KASAN_INLINE enabled [ 69.842127][ T8878] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 69.850513][ T8878] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 69.858304][ T8878] CPU: 1 PID: 8878 Comm: syz-executor835 Not tainted 5.3.0+ #0 [ 69.865825][ T8878] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.875915][ T8878] RIP: 0010:xsk_map_update_elem+0x79c/0xac0 [ 69.881877][ T8878] Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 ef 02 00 00 4c 89 e2 4d 89 a7 d8 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 c0 02 00 00 49 8d 7c 24 08 49 8d 87 d0 05 00 00 [ 69.901516][ T8878] RSP: 0018:ffff88809a517bb8 EFLAGS: 00010246 [ 69.907799][ T8878] RAX: dffffc0000000000 RBX: ffff88809ccc49d0 RCX: ffffffff81868070 [ 69.915984][ T8878] RDX: 0000000000000000 RSI: ffffffff81868085 RDI: 0000000000000001 [ 69.923933][ T8878] RBP: ffff88809a517c78 R08: ffff8880a10d2000 R09: ffffed10134a2f65 [ 69.931889][ T8878] R10: ffffed10134a2f64 R11: 0000000000000003 R12: 0000000000000000 [ 69.940059][ T8878] R13: ffff88809ccc49e0 R14: ffff888089db5580 R15: ffff88809ccc4400 [ 69.948258][ T8878] FS: 0000555555df2880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 69.957175][ T8878] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.963829][ T8878] CR2: 0000000020000040 CR3: 00000000985e5000 CR4: 00000000001406e0 [ 69.971804][ T8878] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.979855][ T8878] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 69.987957][ T8878] Call Trace: [ 69.991342][ T8878] ? xsk_map_free+0x90/0x90 [ 69.996034][ T8878] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.002445][ T8878] ? __kasan_check_read+0x11/0x20 [ 70.007634][ T8878] ? xsk_map_free+0x90/0x90 [ 70.012156][ T8878] map_update_elem+0xc82/0x10b0 [ 70.017025][ T8878] __do_sys_bpf+0x8b5/0x3350 [ 70.021689][ T8878] ? bpf_prog_load+0x1660/0x1660 [ 70.026615][ T8878] ? rcu_read_lock_any_held+0xcd/0xf0 [ 70.032124][ T8878] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 70.037395][ T8878] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.043642][ T8878] ? __sb_end_write+0x11a/0x1a0 [ 70.048745][ T8878] ? vfs_write+0x160/0x5d0 [ 70.053173][ T8878] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 70.058803][ T8878] ? do_syscall_64+0x26/0x760 [ 70.063540][ T8878] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.069599][ T8878] ? do_syscall_64+0x26/0x760 [ 70.074264][ T8878] __x64_sys_bpf+0x73/0xb0 [ 70.078780][ T8878] do_syscall_64+0xfa/0x760 [ 70.083278][ T8878] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.089156][ T8878] RIP: 0033:0x440709 [ 70.093068][ T8878] 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 5b 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 70.113188][ T8878] RSP: 002b:00007ffef4503478 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 70.121600][ T8878] RAX: ffffffffffffffda RBX: 00007ffef4503480 RCX: 0000000000440709 [ 70.129586][ T8878] RDX: 0000000000000020 RSI: 0000000020000100 RDI: 0000000000000002 [ 70.137729][ T8878] RBP: 0000000000000005 R08: 0000000000000001 R09: 00007ffef4500033 [ 70.145726][ T8878] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ff0 [ 70.153889][ T8878] R13: 0000000000402080 R14: 0000000000000000 R15: 0000000000000000 [ 70.161849][ T8878] Modules linked in: [ 70.165770][ T8878] ---[ end trace a95b9b926f856077 ]--- [ 70.171271][ T8878] RIP: 0010:xsk_map_update_elem+0x79c/0xac0 [ 70.177203][ T8878] Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 ef 02 00 00 4c 89 e2 4d 89 a7 d8 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 c0 02 00 00 49 8d 7c 24 08 49 8d 87 d0 05 00 00 [ 70.197134][ T8878] RSP: 0018:ffff88809a517bb8 EFLAGS: 00010246 [ 70.203208][ T8878] RAX: dffffc0000000000 RBX: ffff88809ccc49d0 RCX: ffffffff81868070 [ 70.211400][ T8878] RDX: 0000000000000000 RSI: ffffffff81868085 RDI: 0000000000000001 [ 70.219422][ T8878] RBP: ffff88809a517c78 R08: ffff8880a10d2000 R09: ffffed10134a2f65 [ 70.227526][ T8878] R10: ffffed10134a2f64 R11: 0000000000000003 R12: 0000000000000000 [ 70.235604][ T8878] R13: ffff88809ccc49e0 R14: ffff888089db5580 R15: ffff88809ccc4400 [ 70.243590][ T8878] FS: 0000555555df2880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 70.252739][ T8878] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.259364][ T8878] CR2: 0000000020000040 CR3: 00000000985e5000 CR4: 00000000001406e0 [ 70.267359][ T8878] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.275469][ T8878] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.283458][ T8878] Kernel panic - not syncing: Fatal exception in interrupt [ 70.292349][ T8878] Kernel Offset: disabled [ 70.296683][ T8878] Rebooting in 86400 seconds..