[ 31.895562] audit: type=1800 audit(1572563989.584:33): pid=6685 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 [ 31.922111] audit: type=1800 audit(1572563989.584:34): pid=6685 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: [ 33.881678] random: sshd: uninitialized urandom read (32 bytes read) [ 34.180159] audit: type=1400 audit(1572563991.864:35): avc: denied { map } for pid=6861 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 [ 34.232289] random: sshd: uninitialized urandom read (32 bytes read) [ 34.765722] random: sshd: uninitialized urandom read (32 bytes read) [ 34.947868] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.61' (ECDSA) to the list of known hosts. [ 40.596000] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 40.709085] audit: type=1400 audit(1572563998.394:36): avc: denied { map } for pid=6874 comm="syz-executor589" path="/root/syz-executor589738940" 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 [ 40.711953] BUG: unable to handle kernel NULL pointer dereference at (null) [ 40.743366] IP: (null) [ 40.746711] PGD 83aed067 P4D 83aed067 PUD a7fa7067 PMD 0 [ 40.752230] Oops: 0010 [#1] PREEMPT SMP KASAN [ 40.756701] Modules linked in: [ 40.759873] CPU: 1 PID: 6874 Comm: syz-executor589 Not tainted 4.14.151 #0 [ 40.766907] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.776256] task: ffff8880a7194240 task.stack: ffff8880948a0000 [ 40.782291] RIP: 0010: (null) [ 40.786153] RSP: 0018:ffff8880948a7d48 EFLAGS: 00010246 [ 40.791490] RAX: dffffc0000000000 RBX: ffffffff88151060 RCX: 1ffff11014e3295c [ 40.798739] RDX: 1ffffffff102a223 RSI: 0000000000000000 RDI: ffff8880a59de800 [ 40.806876] RBP: ffff8880948a7d68 R08: 0000000000000001 R09: ffff8880a7194ae0 [ 40.814124] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a59de800 [ 40.821375] R13: ffff8880a59de80e R14: 000000000000001c R15: 0000000000000002 [ 40.829588] FS: 00000000012c1880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 40.837792] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.843649] CR2: 0000000000000000 CR3: 0000000094d8d000 CR4: 00000000001406e0 [ 40.850901] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.858149] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.865399] Call Trace: [ 40.867967] inet_autobind+0xae/0x180 [ 40.871745] inet_dgram_connect+0x136/0x1e0 [ 40.876062] SYSC_connect+0x1f6/0x2d0 [ 40.879840] ? SYSC_bind+0x220/0x220 [ 40.883538] ? up_read+0x1a/0x40 [ 40.886885] ? __do_page_fault+0x358/0xb80 [ 40.891100] SyS_connect+0x24/0x30 [ 40.894632] ? SyS_accept+0x30/0x30 [ 40.898238] do_syscall_64+0x1e8/0x640 [ 40.902102] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.906925] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.912092] RIP: 0033:0x4401d9 [ 40.915274] RSP: 002b:00007ffde8792e98 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 40.922958] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 40.930211] RDX: 000000000000001c RSI: 0000000020000000 RDI: 0000000000000003 [ 40.937460] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 40.944706] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 40.951954] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 40.959204] Code: Bad RIP value. [ 40.962647] RIP: (null) RSP: ffff8880948a7d48 [ 40.967983] CR2: 0000000000000000 [ 40.971661] ---[ end trace 11ed1458a586344a ]--- [ 40.976413] Kernel panic - not syncing: Fatal exception [ 40.983197] Kernel Offset: disabled [ 40.986821] Rebooting in 86400 seconds..