[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 65.250245][ T26] audit: type=1800 audit(1560926853.601:25): pid=9036 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 65.288207][ T26] audit: type=1800 audit(1560926853.601:26): pid=9036 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 65.327273][ T26] audit: type=1800 audit(1560926853.601:27): pid=9036 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[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.49' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 92.868256][ T9190] kasan: CONFIG_KASAN_INLINE enabled [ 92.873807][ T9190] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 92.882695][ T9190] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 92.889630][ T9190] CPU: 0 PID: 9190 Comm: syz-executor149 Not tainted 5.2.0-rc5+ #38 [ 92.897698][ T9190] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.907835][ T9190] RIP: 0010:call_fib6_multipath_entry_notifiers+0xd1/0x1a0 [ 92.915238][ T9190] Code: 8b b5 30 ff ff ff 48 c7 85 68 ff ff ff 00 00 00 00 48 c7 85 70 ff ff ff 00 00 00 00 89 45 88 4c 89 e0 48 c1 e8 03 4c 89 65 80 <42> 80 3c 28 00 0f 85 9a 00 00 00 48 b8 00 00 00 00 00 fc ff df 4d [ 92.935381][ T9190] RSP: 0018:ffff88809788f2c0 EFLAGS: 00010246 [ 92.941436][ T9190] RAX: 0000000000000000 RBX: 1ffff11012f11e59 RCX: 00000000ffffffff [ 92.949389][ T9190] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 92.957339][ T9190] RBP: ffff88809788f390 R08: ffff88809788f8c0 R09: 000000000000000c [ 92.965388][ T9190] R10: ffff88809788f5d8 R11: ffff88809788f527 R12: 0000000000000000 [ 92.973573][ T9190] R13: dffffc0000000000 R14: ffff88809788f8c0 R15: ffffffff89541d80 [ 92.981676][ T9190] FS: 000055555632c880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 92.990836][ T9190] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.997403][ T9190] CR2: 0000000020000080 CR3: 000000009ba7c000 CR4: 00000000001406f0 [ 93.005459][ T9190] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 93.013411][ T9190] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 93.021357][ T9190] Call Trace: [ 93.024631][ T9190] ? call_fib6_entry_notifiers+0x180/0x180 [ 93.030453][ T9190] ? mark_held_locks+0xf0/0xf0 [ 93.035212][ T9190] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 93.041561][ T9190] ip6_route_multipath_add+0xc55/0x1490 [ 93.047127][ T9190] ? rtm_to_fib6_config+0xd76/0x1480 [ 93.052399][ T9190] ? ip6_route_mpath_notify+0xf0/0xf0 [ 93.057824][ T9190] ? lock_acquire+0x16f/0x3f0 [ 93.062572][ T9190] ? rtnetlink_rcv_msg+0x40a/0xb00 [ 93.067780][ T9190] inet6_rtm_newroute+0xed/0x180 [ 93.072934][ T9190] ? ip6_route_multipath_add+0x1490/0x1490 [ 93.078868][ T9190] ? refcount_dec_and_test_checked+0x1b/0x20 [ 93.084973][ T9190] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 93.091311][ T9190] ? ip6_route_multipath_add+0x1490/0x1490 [ 93.097195][ T9190] rtnetlink_rcv_msg+0x463/0xb00 [ 93.102318][ T9190] ? rtnetlink_put_metrics+0x560/0x560 [ 93.108202][ T9190] ? lock_downgrade+0x880/0x880 [ 93.113044][ T9190] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.119291][ T9190] ? netlink_deliver_tap+0x22d/0xbf0 [ 93.124552][ T9190] ? find_held_lock+0x35/0x130 [ 93.129403][ T9190] netlink_rcv_skb+0x177/0x450 [ 93.134228][ T9190] ? rtnetlink_put_metrics+0x560/0x560 [ 93.139710][ T9190] ? netlink_ack+0xb50/0xb50 [ 93.144393][ T9190] ? kasan_check_read+0x11/0x20 [ 93.149340][ T9190] ? netlink_deliver_tap+0x254/0xbf0 [ 93.154615][ T9190] rtnetlink_rcv+0x1d/0x30 [ 93.159188][ T9190] netlink_unicast+0x531/0x710 [ 93.164032][ T9190] ? netlink_attachskb+0x770/0x770 [ 93.169142][ T9190] ? _copy_from_iter_full+0x25d/0x8c0 [ 93.174503][ T9190] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 93.180227][ T9190] ? __check_object_size+0x3d/0x42f [ 93.185540][ T9190] netlink_sendmsg+0x8ae/0xd70 [ 93.190289][ T9190] ? netlink_unicast+0x710/0x710 [ 93.195542][ T9190] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 93.201077][ T9190] ? apparmor_socket_sendmsg+0x2a/0x30 [ 93.206516][ T9190] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.212957][ T9190] ? security_socket_sendmsg+0x8d/0xc0 [ 93.218787][ T9190] ? netlink_unicast+0x710/0x710 [ 93.223869][ T9190] sock_sendmsg+0xd7/0x130 [ 93.228276][ T9190] ___sys_sendmsg+0x803/0x920 [ 93.232930][ T9190] ? copy_msghdr_from_user+0x430/0x430 [ 93.238460][ T9190] ? prep_transhuge_page+0xa0/0xa0 [ 93.243615][ T9190] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.250195][ T9190] ? __handle_mm_fault+0x7cb/0x3eb0 [ 93.255533][ T9190] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.261975][ T9190] ? __fget_light+0x1a9/0x230 [ 93.266879][ T9190] ? __fdget+0x1b/0x20 [ 93.270960][ T9190] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 93.277315][ T9190] __sys_sendmsg+0x105/0x1d0 [ 93.282042][ T9190] ? __ia32_sys_shutdown+0x80/0x80 [ 93.287277][ T9190] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 93.292736][ T9190] ? do_syscall_64+0x26/0x680 [ 93.297427][ T9190] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 93.303627][ T9190] ? do_syscall_64+0x26/0x680 [ 93.308456][ T9190] __x64_sys_sendmsg+0x78/0xb0 [ 93.313225][ T9190] do_syscall_64+0xfd/0x680 [ 93.317856][ T9190] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 93.323896][ T9190] RIP: 0033:0x4401f9 [ 93.327780][ T9190] 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 [ 93.348039][ T9190] RSP: 002b:00007ffc09fd0028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 93.356581][ T9190] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401f9 [ 93.364556][ T9190] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 93.372765][ T9190] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 93.380732][ T9190] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a80 [ 93.388966][ T9190] R13: 0000000000401b10 R14: 0000000000000000 R15: 0000000000000000 [ 93.397292][ T9190] Modules linked in: [ 93.402106][ T9190] ---[ end trace 77949df4cfac115c ]--- [ 93.407574][ T9190] RIP: 0010:call_fib6_multipath_entry_notifiers+0xd1/0x1a0 [ 93.414869][ T9190] Code: 8b b5 30 ff ff ff 48 c7 85 68 ff ff ff 00 00 00 00 48 c7 85 70 ff ff ff 00 00 00 00 89 45 88 4c 89 e0 48 c1 e8 03 4c 89 65 80 <42> 80 3c 28 00 0f 85 9a 00 00 00 48 b8 00 00 00 00 00 fc ff df 4d [ 93.434538][ T9190] RSP: 0018:ffff88809788f2c0 EFLAGS: 00010246 [ 93.440796][ T9190] RAX: 0000000000000000 RBX: 1ffff11012f11e59 RCX: 00000000ffffffff [ 93.448964][ T9190] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 93.457041][ T9190] RBP: ffff88809788f390 R08: ffff88809788f8c0 R09: 000000000000000c [ 93.465184][ T9190] R10: ffff88809788f5d8 R11: ffff88809788f527 R12: 0000000000000000 [ 93.473194][ T9190] R13: dffffc0000000000 R14: ffff88809788f8c0 R15: ffffffff89541d80 [ 93.481228][ T9190] FS: 000055555632c880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 93.490197][ T9190] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 93.496777][ T9190] CR2: 0000000020000080 CR3: 000000009ba7c000 CR4: 00000000001406f0 [ 93.504918][ T9190] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 93.513030][ T9190] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 93.521069][ T9190] Kernel panic - not syncing: Fatal exception [ 93.528970][ T9190] Kernel Offset: disabled [ 93.533508][ T9190] Rebooting in 86400 seconds..