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. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 36.253464] audit: type=1800 audit(1569371486.191:33): pid=7216 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 [ 36.274592] audit: type=1800 audit(1569371486.201:34): pid=7216 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 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 40.141723] audit: type=1400 audit(1569371490.081:35): avc: denied { map } for pid=7393 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 '10.128.1.54' (ECDSA) to the list of known hosts. executing program [ 46.624942] audit: type=1400 audit(1569371496.561:36): avc: denied { map } for pid=7406 comm="syz-executor160" path="/root/syz-executor160001217" 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 [ 46.643197] IPVS: ftp: loaded support on port[0] = 21 [ 46.679387] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 46.687655] PGD 93f3c067 P4D 93f3c067 PUD 831f8067 PMD 0 [ 46.693182] Oops: 0010 [#1] PREEMPT SMP KASAN [ 46.697660] CPU: 1 PID: 7407 Comm: syz-executor160 Not tainted 4.19.75 #0 [ 46.704604] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.713980] RIP: 0010: (null) [ 46.717858] Code: Bad RIP value. [ 46.721203] RSP: 0018:ffff8880941e74d8 EFLAGS: 00010246 [ 46.726918] RAX: dffffc0000000000 RBX: ffffffff87e1fe00 RCX: ffffffff857e91e4 [ 46.734166] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88808182c3c0 [ 46.741428] RBP: ffff8880941e75d0 R08: ffff88808f7ba100 R09: ffff8880941e7658 [ 46.748696] R10: ffffed101283ced9 R11: ffff8880941e76cf R12: ffff8880941e75a8 [ 46.755960] R13: ffff88808182c3c0 R14: 0000000000000001 R15: ffffffff87e1fe00 [ 46.763217] FS: 000055555560d880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 46.771421] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.777282] CR2: ffffffffffffffd6 CR3: 0000000093e78000 CR4: 00000000001406e0 [ 46.784724] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.791982] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.799232] Call Trace: [ 46.801806] tc_bind_tclass+0x13c/0x490 [ 46.805780] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.811312] ? __qdisc_calculate_pkt_len+0x2e0/0x2e0 [ 46.816397] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.822023] ? ns_capable_common+0x141/0x170 [ 46.826415] ? memset+0x32/0x40 [ 46.829681] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 46.854737] ? qdisc_match_from_root+0x18a/0x280 [ 46.859482] tc_ctl_tclass+0xaa9/0xc60 [ 46.863351] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 46.868449] ? find_held_lock+0x35/0x130 [ 46.872519] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 46.878052] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 46.883148] rtnetlink_rcv_msg+0x463/0xb00 [ 46.887365] ? rtnetlink_put_metrics+0x560/0x560 [ 46.892104] ? netlink_deliver_tap+0x22d/0xc20 [ 46.896671] ? find_held_lock+0x35/0x130 [ 46.900737] netlink_rcv_skb+0x17d/0x460 [ 46.904787] ? rtnetlink_put_metrics+0x560/0x560 [ 46.909537] ? netlink_ack+0xb30/0xb30 [ 46.916012] ? kasan_check_read+0x11/0x20 [ 46.920144] ? netlink_deliver_tap+0x254/0xc20 [ 46.924724] rtnetlink_rcv+0x1d/0x30 [ 46.928429] netlink_unicast+0x537/0x720 [ 46.932470] ? netlink_attachskb+0x770/0x770 [ 46.936861] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.942910] netlink_sendmsg+0x8ae/0xd70 [ 46.946953] ? netlink_unicast+0x720/0x720 [ 46.951175] ? selinux_socket_sendmsg+0x36/0x40 [ 46.955828] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.961359] ? security_socket_sendmsg+0x8d/0xc0 [ 46.971131] ? netlink_unicast+0x720/0x720 [ 46.975962] sock_sendmsg+0xd7/0x130 [ 46.979656] ___sys_sendmsg+0x803/0x920 [ 46.983612] ? copy_msghdr_from_user+0x430/0x430 [ 46.988349] ? __might_fault+0x12b/0x1e0 [ 46.992390] ? __might_fault+0x12b/0x1e0 [ 46.996442] ? lock_downgrade+0x810/0x810 [ 47.000574] ? kasan_check_read+0x11/0x20 [ 47.004735] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.010276] ? __fget_light+0x1a9/0x230 [ 47.014242] ? __fdget+0x1b/0x20 [ 47.020020] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 47.025541] __sys_sendmsg+0x105/0x1d0 [ 47.029409] ? __ia32_sys_shutdown+0x80/0x80 [ 47.033813] ? up_read+0x1a/0x110 [ 47.037252] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 47.042004] ? do_syscall_64+0x26/0x620 [ 47.045961] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.051305] ? do_syscall_64+0x26/0x620 [ 47.055270] __x64_sys_sendmsg+0x78/0xb0 [ 47.059312] do_syscall_64+0xfd/0x620 [ 47.063205] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.068374] RIP: 0033:0x440d89 [ 47.071551] 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 [ 47.092354] RSP: 002b:00007ffc2e7aaa98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 47.100046] RAX: ffffffffffffffda RBX: 00000000004a26d0 RCX: 0000000000440d89 [ 47.107297] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 [ 47.114548] RBP: 00000000004a26d0 R08: 0000000120080522 R09: 0000000120080522 [ 47.122253] R10: 0000000120080522 R11: 0000000000000246 R12: 0000000000402290 [ 47.129503] R13: 0000000000402320 R14: 0000000000000000 R15: 0000000000000000 [ 47.137537] Modules linked in: [ 47.140712] CR2: 0000000000000000 [ 47.144795] ---[ end trace 82cf4cece8f6255b ]--- [ 47.149558] RIP: 0010: (null) [ 47.153434] Code: Bad RIP value. [ 47.156943] RSP: 0018:ffff8880941e74d8 EFLAGS: 00010246 [ 47.162303] RAX: dffffc0000000000 RBX: ffffffff87e1fe00 RCX: ffffffff857e91e4 [ 47.170205] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88808182c3c0 [ 47.177554] RBP: ffff8880941e75d0 R08: ffff88808f7ba100 R09: ffff8880941e7658 [ 47.184840] R10: ffffed101283ced9 R11: ffff8880941e76cf R12: ffff8880941e75a8 [ 47.192216] R13: ffff88808182c3c0 R14: 0000000000000001 R15: ffffffff87e1fe00 [ 47.199526] FS: 000055555560d880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 47.207782] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.213652] CR2: ffffffffffffffd6 CR3: 0000000093e78000 CR4: 00000000001406e0 [ 47.220956] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.228239] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.235556] Kernel panic - not syncing: Fatal exception [ 47.242176] Kernel Offset: disabled [ 47.245886] Rebooting in 86400 seconds..