Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [[ 37.628851] audit: type=1800 audit(1568347087.358:33): pid=7358 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 ....] Starting OpenBSD Secure Shell server: sshd[ 37.654370] audit: type=1800 audit(1568347087.368:34): pid=7358 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 41.781958] audit: type=1400 audit(1568347091.518:35): avc: denied { map } for pid=7533 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.15.217' (ECDSA) to the list of known hosts. executing program [ 48.382760] audit: type=1400 audit(1568347098.118:36): avc: denied { map } for pid=7545 comm="syz-executor842" path="/root/syz-executor842175912" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 48.398059] IPVS: ftp: loaded support on port[0] = 21 [ 48.437114] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 48.445203] PGD 94f8e067 P4D 94f8e067 PUD a517a067 PMD 0 [ 48.450738] Oops: 0010 [#1] PREEMPT SMP KASAN [ 48.455217] CPU: 0 PID: 7546 Comm: syz-executor842 Not tainted 4.19.72 #0 [ 48.462134] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.471470] RIP: 0010: (null) [ 48.475364] Code: Bad RIP value. [ 48.478720] RSP: 0018:ffff88808f0174d8 EFLAGS: 00010246 [ 48.484076] RAX: dffffc0000000000 RBX: ffffffff87e1f680 RCX: ffffffff857e4ea4 [ 48.491448] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88808fb3d5c0 [ 48.498709] RBP: ffff88808f0175d0 R08: ffff8880a805c0c0 R09: ffff88808f017658 [ 48.505965] R10: ffffed1011e02ed9 R11: ffff88808f0176cf R12: ffff88808f0175a8 [ 48.513230] R13: ffff88808fb3d5c0 R14: 0000000000000001 R15: ffffffff87e1f680 [ 48.520488] FS: 00000000017e7880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 48.528706] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.534591] CR2: ffffffffffffffd6 CR3: 00000000a5584000 CR4: 00000000001406f0 [ 48.541853] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.549120] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.556374] Call Trace: [ 48.558963] tc_bind_tclass+0x13c/0x490 [ 48.562938] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.568469] ? __qdisc_calculate_pkt_len+0x2e0/0x2e0 [ 48.573559] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.579089] ? ns_capable_common+0x141/0x170 [ 48.583481] ? memset+0x32/0x40 [ 48.586752] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 48.591755] ? qdisc_match_from_root+0x18a/0x280 [ 48.596494] tc_ctl_tclass+0xaa9/0xc60 [ 48.600366] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 48.605451] ? find_held_lock+0x35/0x130 [ 48.609498] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 48.615017] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 48.620104] rtnetlink_rcv_msg+0x463/0xb00 [ 48.624324] ? rtnetlink_put_metrics+0x560/0x560 [ 48.629065] ? netlink_deliver_tap+0x22d/0xc20 [ 48.633632] ? find_held_lock+0x35/0x130 [ 48.637687] netlink_rcv_skb+0x17d/0x460 [ 48.641736] ? rtnetlink_put_metrics+0x560/0x560 [ 48.646474] ? netlink_ack+0xb30/0xb30 [ 48.650355] ? kasan_check_read+0x11/0x20 [ 48.654504] ? netlink_deliver_tap+0x254/0xc20 [ 48.659071] rtnetlink_rcv+0x1d/0x30 [ 48.662776] netlink_unicast+0x537/0x720 [ 48.666823] ? netlink_attachskb+0x770/0x770 [ 48.671225] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.676746] netlink_sendmsg+0x8ae/0xd70 [ 48.680902] ? netlink_unicast+0x720/0x720 [ 48.685121] ? selinux_socket_sendmsg+0x36/0x40 [ 48.689800] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.695351] ? security_socket_sendmsg+0x8d/0xc0 [ 48.700095] ? netlink_unicast+0x720/0x720 [ 48.704321] sock_sendmsg+0xd7/0x130 [ 48.708105] ___sys_sendmsg+0x803/0x920 [ 48.712165] ? copy_msghdr_from_user+0x430/0x430 [ 48.716906] ? __might_fault+0x12b/0x1e0 [ 48.720990] ? __might_fault+0x12b/0x1e0 [ 48.725069] ? lock_downgrade+0x810/0x810 [ 48.729205] ? kasan_check_read+0x11/0x20 [ 48.733338] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.738857] ? __fget_light+0x1a9/0x230 [ 48.742815] ? __fdget+0x1b/0x20 [ 48.746167] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 48.751685] __sys_sendmsg+0x105/0x1d0 [ 48.755554] ? __ia32_sys_shutdown+0x80/0x80 [ 48.759946] ? up_read+0x1a/0x110 [ 48.763384] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 48.768136] ? do_syscall_64+0x26/0x620 [ 48.772105] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.777452] ? do_syscall_64+0x26/0x620 [ 48.781413] __x64_sys_sendmsg+0x78/0xb0 [ 48.785458] do_syscall_64+0xfd/0x620 [ 48.789258] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.794442] RIP: 0033:0x440d89 [ 48.797620] 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 7b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 48.816505] RSP: 002b:00007fffa1c02458 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 48.824195] RAX: ffffffffffffffda RBX: 00000000004a26d0 RCX: 0000000000440d89 [ 48.831447] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 48.838696] RBP: 00000000004a26d0 R08: 0000000120080522 R09: 0000000120080522 [ 48.845947] R10: 0000000120080522 R11: 0000000000000246 R12: 0000000000402290 [ 48.854325] R13: 0000000000402320 R14: 0000000000000000 R15: 0000000000000000 [ 48.861587] Modules linked in: [ 48.864784] CR2: 0000000000000000 [ 48.869208] ---[ end trace 22083a15b87b1d03 ]--- [ 48.874020] RIP: 0010: (null) [ 48.877923] Code: Bad RIP value. [ 48.881473] RSP: 0018:ffff88808f0174d8 EFLAGS: 00010246 [ 48.886897] RAX: dffffc0000000000 RBX: ffffffff87e1f680 RCX: ffffffff857e4ea4 [ 48.894213] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88808fb3d5c0 [ 48.901582] RBP: ffff88808f0175d0 R08: ffff8880a805c0c0 R09: ffff88808f017658 [ 48.908848] R10: ffffed1011e02ed9 R11: ffff88808f0176cf R12: ffff88808f0175a8 [ 48.916187] R13: ffff88808fb3d5c0 R14: 0000000000000001 R15: ffffffff87e1f680 [ 48.923504] FS: 00000000017e7880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 48.931759] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.937639] CR2: ffffffffffffffd6 CR3: 00000000a5584000 CR4: 00000000001406f0 [ 48.944939] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.952238] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.959507] Kernel panic - not syncing: Fatal exception [ 48.966333] Kernel Offset: disabled [ 48.969959] Rebooting in 86400 seconds..