[ 67.642824][ T26] audit: type=1800 audit(1563572072.424:25): pid=8839 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 67.687535][ T26] audit: type=1800 audit(1563572072.434:26): pid=8839 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 67.738859][ T26] audit: type=1800 audit(1563572072.434:27): pid=8839 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. [ 68.329211][ T8902] sshd (8902) used greatest stack depth: 23448 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.11' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 75.511406][ T8992] netlink: 4 bytes leftover after parsing attributes in process `syz-executor240'. [ 75.520903][ T8992] kasan: CONFIG_KASAN_INLINE enabled [ 75.526256][ T8992] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 75.536835][ T8992] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 75.543776][ T8992] CPU: 0 PID: 8992 Comm: syz-executor240 Not tainted 5.2.0+ #93 [ 75.551389][ T8992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.561448][ T8992] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 75.566819][ T8992] Code: 00 00 48 c7 c7 c0 aa da 88 e8 40 13 a9 fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c7 85 e8 fe ff ff 00 00 00 00 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 e2 [ 75.586776][ T8992] RSP: 0018:ffff88808b3a6eb8 EFLAGS: 00010246 [ 75.592851][ T8992] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11011d92550 [ 75.600812][ T8992] RDX: 0000000000000000 RSI: 1ffff11011d92557 RDI: 0000000000000286 [ 75.608899][ T8992] RBP: ffff88808b3a7060 R08: 0000000000000002 R09: ffff88808ec92a88 [ 75.616863][ T8992] R10: fffffbfff1345337 R11: ffffffff89a299bf R12: 0000000000000001 [ 75.624839][ T8992] R13: ffff88809b5124c0 R14: ffff88808b3a78c0 R15: 0000000000000000 [ 75.632803][ T8992] FS: 00005555561a6880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 75.641746][ T8992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.648412][ T8992] CR2: 0000000020000180 CR3: 000000008afdd000 CR4: 00000000001406f0 [ 75.656373][ T8992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.664334][ T8992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.672291][ T8992] Call Trace: [ 75.675587][ T8992] ? tc_lookup_action_n+0xd2/0x100 [ 75.680681][ T8992] ? __add_metainfo+0x480/0x480 [ 75.685512][ T8992] ? tc_lookup_action_n+0xd2/0x100 [ 75.690620][ T8992] ? lock_downgrade+0x920/0x920 [ 75.695458][ T8992] ? __kasan_check_write+0x14/0x20 [ 75.700561][ T8992] ? do_raw_read_unlock+0x3f/0x70 [ 75.705580][ T8992] tcf_action_init_1+0x6f2/0xa80 [ 75.710532][ T8992] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.716771][ T8992] ? tcf_action_dump_old+0x80/0x80 [ 75.721893][ T8992] ? lock_downgrade+0x920/0x920 [ 75.726741][ T8992] ? __kasan_check_read+0x11/0x20 [ 75.731760][ T8992] ? mark_lock+0xc0/0x11e0 [ 75.736173][ T8992] tcf_action_init+0x241/0x360 [ 75.740931][ T8992] ? tcf_action_init_1+0xa80/0xa80 [ 75.746032][ T8992] ? mark_lock+0xc0/0x11e0 [ 75.750441][ T8992] ? mark_lock+0xc0/0x11e0 [ 75.754863][ T8992] ? __kasan_check_read+0x11/0x20 [ 75.760091][ T8992] tcf_action_add+0xe8/0x370 [ 75.764675][ T8992] ? tca_action_gd+0x1730/0x1730 [ 75.769599][ T8992] ? refcount_dec_not_one+0x1f0/0x1f0 [ 75.774994][ T8992] ? __nla_parse+0x43/0x60 [ 75.780684][ T8992] tc_ctl_action+0x3b5/0x4bc [ 75.785448][ T8992] ? tcf_action_add+0x370/0x370 [ 75.790301][ T8992] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.796573][ T8992] ? tcf_action_add+0x370/0x370 [ 75.801427][ T8992] rtnetlink_rcv_msg+0x463/0xb00 [ 75.806361][ T8992] ? rtnetlink_put_metrics+0x590/0x590 [ 75.811819][ T8992] ? lock_downgrade+0x920/0x920 [ 75.816662][ T8992] ? netlink_deliver_tap+0x22d/0xbf0 [ 75.821944][ T8992] ? find_held_lock+0x35/0x130 [ 75.826704][ T8992] netlink_rcv_skb+0x177/0x450 [ 75.831464][ T8992] ? rtnetlink_put_metrics+0x590/0x590 [ 75.836945][ T8992] ? netlink_ack+0xb50/0xb50 [ 75.841529][ T8992] ? __kasan_check_read+0x11/0x20 [ 75.846539][ T8992] ? netlink_deliver_tap+0x254/0xbf0 [ 75.851811][ T8992] rtnetlink_rcv+0x1d/0x30 [ 75.856270][ T8992] netlink_unicast+0x531/0x710 [ 75.861041][ T8992] ? netlink_attachskb+0x7c0/0x7c0 [ 75.866145][ T8992] ? _copy_from_iter_full+0x25d/0x8c0 [ 75.871547][ T8992] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 75.877265][ T8992] ? __check_object_size+0x3d/0x43c [ 75.882451][ T8992] netlink_sendmsg+0x8ae/0xd70 [ 75.887198][ T8992] ? netlink_unicast+0x710/0x710 [ 75.892117][ T8992] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 75.897646][ T8992] ? apparmor_socket_sendmsg+0x2a/0x30 [ 75.903102][ T8992] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.909321][ T8992] ? security_socket_sendmsg+0x8d/0xc0 [ 75.914757][ T8992] ? netlink_unicast+0x710/0x710 [ 75.919671][ T8992] sock_sendmsg+0xd7/0x130 [ 75.924060][ T8992] ___sys_sendmsg+0x803/0x920 [ 75.928714][ T8992] ? copy_msghdr_from_user+0x440/0x440 [ 75.934323][ T8992] ? prep_transhuge_page+0xa0/0xa0 [ 75.939508][ T8992] ? __lock_acquire+0x8a0/0x4690 [ 75.944435][ T8992] ? percpu_counter_add_batch+0x13c/0x190 [ 75.950171][ T8992] ? __do_page_fault+0x56a/0xdd0 [ 75.955096][ T8992] ? find_held_lock+0x35/0x130 [ 75.959844][ T8992] ? __do_page_fault+0x56a/0xdd0 [ 75.964765][ T8992] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.970986][ T8992] ? __fget_light+0x1a9/0x230 [ 75.975656][ T8992] ? __fdget+0x1b/0x20 [ 75.979703][ T8992] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 75.985923][ T8992] __sys_sendmsg+0x105/0x1d0 [ 75.990517][ T8992] ? __sys_sendmsg_sock+0xd0/0xd0 [ 75.995524][ T8992] ? down_read_non_owner+0x450/0x450 [ 76.000791][ T8992] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 76.006239][ T8992] ? do_syscall_64+0x26/0x6a0 [ 76.011008][ T8992] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.017058][ T8992] ? do_syscall_64+0x26/0x6a0 [ 76.021720][ T8992] __x64_sys_sendmsg+0x78/0xb0 [ 76.026468][ T8992] do_syscall_64+0xfd/0x6a0 [ 76.030957][ T8992] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.036827][ T8992] RIP: 0033:0x4401d9 [ 76.040706][ T8992] 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 [ 76.060316][ T8992] RSP: 002b:00007fff031cc168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 76.068729][ T8992] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 76.076708][ T8992] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 76.084666][ T8992] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 76.092802][ T8992] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 76.100755][ T8992] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 76.108710][ T8992] Modules linked in: [ 76.113846][ T8992] ---[ end trace 9d6826d95dbffd9f ]--- [ 76.119629][ T8992] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 76.125006][ T8992] Code: 00 00 48 c7 c7 c0 aa da 88 e8 40 13 a9 fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c7 85 e8 fe ff ff 00 00 00 00 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 e2 [ 76.144696][ T8992] RSP: 0018:ffff88808b3a6eb8 EFLAGS: 00010246 [ 76.150806][ T8992] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11011d92550 [ 76.158797][ T8992] RDX: 0000000000000000 RSI: 1ffff11011d92557 RDI: 0000000000000286 [ 76.166769][ T8992] RBP: ffff88808b3a7060 R08: 0000000000000002 R09: ffff88808ec92a88 [ 76.174758][ T8992] R10: fffffbfff1345337 R11: ffffffff89a299bf R12: 0000000000000001 [ 76.182755][ T8992] R13: ffff88809b5124c0 R14: ffff88808b3a78c0 R15: 0000000000000000 [ 76.190772][ T8992] FS: 00005555561a6880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 76.199718][ T8992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.206285][ T8992] CR2: 00005601146ff100 CR3: 000000008afdd000 CR4: 00000000001406e0 [ 76.214331][ T8992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.222498][ T8992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.230495][ T8992] Kernel panic - not syncing: Fatal exception [ 76.237720][ T8992] Kernel Offset: disabled [ 76.242052][ T8992] Rebooting in 86400 seconds..