[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 55.816858][ T25] audit: type=1800 audit(1570405489.854:25): pid=8637 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 55.848191][ T25] audit: type=1800 audit(1570405489.854:26): pid=8637 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.972526][ T25] audit: type=1800 audit(1570405490.014:27): pid=8637 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 '10.128.1.55' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 63.607239][ T8790] kasan: CONFIG_KASAN_INLINE enabled [ 63.612700][ T8790] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 63.620970][ T8790] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 63.627908][ T8790] CPU: 1 PID: 8790 Comm: syz-executor447 Not tainted 5.4.0-rc1+ #0 [ 63.635774][ T8790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.645871][ T8790] RIP: 0010:devlink_get_from_attrs+0x32/0x300 [ 63.651917][ T8790] Code: 41 55 41 54 53 48 89 f3 48 83 ec 10 48 89 7d c8 e8 03 f6 bf fb 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 84 02 00 00 4c 8b 6b 08 4d 85 ed 0f 84 d9 01 00 [ 63.671496][ T8790] RSP: 0018:ffff8880944bf438 EFLAGS: 00010202 [ 63.677535][ T8790] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 63.685480][ T8790] RDX: 0000000000000001 RSI: ffffffff85b31cdd RDI: 0000000000000008 [ 63.693429][ T8790] RBP: ffff8880944bf470 R08: 1ffffffff13360d4 R09: fffffbfff13360d5 [ 63.701377][ T8790] R10: ffff8880944bf470 R11: ffffffff899b06a7 R12: ffff8880a1fa47b8 [ 63.709321][ T8790] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a1fa4830 [ 63.717286][ T8790] FS: 00000000015e8880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 63.726199][ T8790] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.732766][ T8790] CR2: 0000000020000284 CR3: 00000000a1620000 CR4: 00000000001406e0 [ 63.740723][ T8790] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.748680][ T8790] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.756662][ T8790] Call Trace: [ 63.759934][ T8790] devlink_nl_cmd_health_reporter_dump_get_dumpit+0x15b/0x930 [ 63.767412][ T8790] ? devlink_fmsg_prepare_skb+0x7b0/0x7b0 [ 63.773111][ T8790] genl_lock_dumpit+0x86/0xc0 [ 63.777763][ T8790] netlink_dump+0x558/0xfb0 [ 63.782244][ T8790] ? netlink_broadcast+0x50/0x50 [ 63.787158][ T8790] __netlink_dump_start+0x5b1/0x7d0 [ 63.792329][ T8790] ? __netlink_ns_capable+0x104/0x140 [ 63.797674][ T8790] ? genl_lock_dumpit+0xc0/0xc0 [ 63.802502][ T8790] genl_rcv_msg+0xc9b/0x1000 [ 63.807083][ T8790] ? genl_family_rcv_msg_attrs_parse.isra.0+0x3a0/0x3a0 [ 63.813995][ T8790] ? genl_lock_dumpit+0xc0/0xc0 [ 63.818821][ T8790] ? genl_unlock+0x20/0x20 [ 63.823207][ T8790] ? genl_parallel_done+0x1c0/0x1c0 [ 63.828380][ T8790] ? mark_held_locks+0xf0/0xf0 [ 63.833118][ T8790] ? find_held_lock+0x35/0x130 [ 63.837858][ T8790] netlink_rcv_skb+0x177/0x450 [ 63.842603][ T8790] ? genl_family_rcv_msg_attrs_parse.isra.0+0x3a0/0x3a0 [ 63.849514][ T8790] ? netlink_ack+0xb50/0xb50 [ 63.854075][ T8790] ? __kasan_check_write+0x14/0x20 [ 63.859161][ T8790] ? netlink_deliver_tap+0x254/0xbf0 [ 63.864422][ T8790] genl_rcv+0x29/0x40 [ 63.868377][ T8790] netlink_unicast+0x531/0x710 [ 63.873114][ T8790] ? netlink_attachskb+0x7c0/0x7c0 [ 63.878200][ T8790] ? _copy_from_iter_full+0x25d/0x8c0 [ 63.883550][ T8790] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 63.889246][ T8790] ? __check_object_size+0x3d/0x437 [ 63.894578][ T8790] netlink_sendmsg+0x8a5/0xd60 [ 63.899317][ T8790] ? netlink_unicast+0x710/0x710 [ 63.904229][ T8790] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 63.909761][ T8790] ? apparmor_socket_sendmsg+0x2a/0x30 [ 63.915235][ T8790] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 63.921510][ T8790] ? security_socket_sendmsg+0x8d/0xc0 [ 63.926949][ T8790] ? netlink_unicast+0x710/0x710 [ 63.931876][ T8790] sock_sendmsg+0xd7/0x130 [ 63.936969][ T8790] ___sys_sendmsg+0x803/0x920 [ 63.941620][ T8790] ? copy_msghdr_from_user+0x440/0x440 [ 63.947077][ T8790] ? prep_transhuge_page+0xa0/0xa0 [ 63.952172][ T8790] ? __do_page_fault+0x56a/0xdd0 [ 63.957081][ T8790] ? find_held_lock+0x35/0x130 [ 63.961820][ T8790] ? __do_page_fault+0x56a/0xdd0 [ 63.966743][ T8790] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 63.973046][ T8790] ? __fget_light+0x1a9/0x230 [ 63.977702][ T8790] ? __fdget+0x1b/0x20 [ 63.981748][ T8790] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 63.987960][ T8790] __sys_sendmsg+0x105/0x1d0 [ 63.992534][ T8790] ? __sys_sendmsg_sock+0xd0/0xd0 [ 63.997534][ T8790] ? down_read_non_owner+0x490/0x490 [ 64.002806][ T8790] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 64.008250][ T8790] ? do_syscall_64+0x26/0x760 [ 64.012913][ T8790] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.018951][ T8790] ? do_syscall_64+0x26/0x760 [ 64.023621][ T8790] __x64_sys_sendmsg+0x78/0xb0 [ 64.028387][ T8790] do_syscall_64+0xfa/0x760 [ 64.032885][ T8790] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.038753][ T8790] RIP: 0033:0x4401e9 [ 64.042628][ T8790] 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 [ 64.062207][ T8790] RSP: 002b:00007ffe414d6368 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 64.070600][ T8790] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401e9 [ 64.078557][ T8790] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 64.086513][ T8790] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 64.094551][ T8790] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a70 [ 64.102526][ T8790] R13: 0000000000401b00 R14: 0000000000000000 R15: 0000000000000000 [ 64.110478][ T8790] Modules linked in: [ 64.114436][ T8790] ---[ end trace 9a97fc0240c52134 ]--- [ 64.120002][ T8790] RIP: 0010:devlink_get_from_attrs+0x32/0x300 [ 64.126046][ T8790] Code: 41 55 41 54 53 48 89 f3 48 83 ec 10 48 89 7d c8 e8 03 f6 bf fb 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 84 02 00 00 4c 8b 6b 08 4d 85 ed 0f 84 d9 01 00 [ 64.145716][ T8790] RSP: 0018:ffff8880944bf438 EFLAGS: 00010202 [ 64.151796][ T8790] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 64.159820][ T8790] RDX: 0000000000000001 RSI: ffffffff85b31cdd RDI: 0000000000000008 [ 64.167780][ T8790] RBP: ffff8880944bf470 R08: 1ffffffff13360d4 R09: fffffbfff13360d5 [ 64.175762][ T8790] R10: ffff8880944bf470 R11: ffffffff899b06a7 R12: ffff8880a1fa47b8 [ 64.183773][ T8790] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a1fa4830 [ 64.191757][ T8790] FS: 00000000015e8880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 64.200697][ T8790] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.207255][ T8790] CR2: 0000000020000284 CR3: 00000000a1620000 CR4: 00000000001406e0 [ 64.215241][ T8790] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.223223][ T8790] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.231200][ T8790] Kernel panic - not syncing: Fatal exception [ 64.238730][ T8790] Kernel Offset: disabled [ 64.243063][ T8790] Rebooting in 86400 seconds..