[ 31.980981] audit: type=1800 audit(1580671637.550:33): pid=7092 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 [ 32.012555] audit: type=1800 audit(1580671637.550:34): pid=7092 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: [ 37.786703] random: sshd: uninitialized urandom read (32 bytes read) [ 38.043780] audit: type=1400 audit(1580671643.610:35): avc: denied { map } for pid=7266 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 [ 38.096088] random: sshd: uninitialized urandom read (32 bytes read) [ 38.811624] random: sshd: uninitialized urandom read (32 bytes read) [ 112.426151] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.206' (ECDSA) to the list of known hosts. [ 117.967391] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program [ 118.084798] audit: type=1400 audit(1580671723.650:36): avc: denied { map } for pid=7278 comm="syz-executor739" path="/root/syz-executor739036760" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 118.162888] EXT4-fs (sda1): re-mounted. Opts: [ 118.176424] EXT4-fs (sda1): re-mounted. Opts: [ 118.186472] EXT4-fs (sda1): re-mounted. Opts: [ 118.192482] EXT4-fs (sda1): re-mounted. Opts: [ 118.198407] EXT4-fs (sda1): re-mounted. Opts: [ 118.212553] EXT4-fs (sda1): re-mounted. Opts: executing program executing program executing program executing program executing program executing program [ 118.296629] EXT4-fs (sda1): re-mounted. Opts: [ 118.316194] EXT4-fs (sda1): re-mounted. Opts: [ 118.322078] EXT4-fs (sda1): re-mounted. Opts: [ 118.332109] EXT4-fs (sda1): re-mounted. Opts: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 123.176102] EXT4-fs: 221 callbacks suppressed [ 123.176108] EXT4-fs (sda1): re-mounted. Opts: [ 123.196033] EXT4-fs (sda1): re-mounted. Opts: [ 123.214689] EXT4-fs (sda1): re-mounted. Opts: executing program executing program [ 123.230558] EXT4-fs (sda1): re-mounted. Opts: executing program executing program executing program [ 123.263637] EXT4-fs (sda1): re-mounted. Opts: [ 123.269495] EXT4-fs (sda1): re-mounted. Opts: executing program executing program executing program [ 123.331242] EXT4-fs (sda1): re-mounted. Opts: [ 123.345758] EXT4-fs (sda1): re-mounted. Opts: [ 123.362556] EXT4-fs (sda1): re-mounted. Opts: executing program [ 123.392775] EXT4-fs (sda1): re-mounted. Opts: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 123.836865] kasan: CONFIG_KASAN_INLINE enabled [ 123.856463] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 123.866905] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 123.873173] Modules linked in: [ 123.876430] CPU: 1 PID: 8606 Comm: udevd Not tainted 4.14.169-syzkaller #0 [ 123.883444] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 123.892796] task: ffff88809729a1c0 task.stack: ffff888096388000 [ 123.898856] RIP: 0010:path_openat+0x20b/0x3db0 [ 123.903539] RSP: 0018:ffff88809638f868 EFLAGS: 00010247 [ 123.909010] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0001020304050608 [ 123.916302] RDX: 0000000000000000 RSI: 1ffff11012c71efe RDI: 0000000000000004 [ 123.923693] RBP: ffff88809638f9c0 R08: ffff88809729a1c0 R09: 0000000000000002 [ 123.930993] R10: 0000000000000000 R11: 0000000000000003 R12: ffff88809638fa00 [ 123.938269] R13: ffff88809638fa00 R14: ffff888084c7ab40 R15: 0000000000000000 [ 123.945817] FS: 00007faee11bf7a0(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 [ 123.954058] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 123.959970] CR2: 0000000000625208 CR3: 0000000096a3d000 CR4: 00000000001406e0 [ 123.967249] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 123.974523] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 123.981888] Call Trace: [ 123.984486] ? depot_save_stack+0x11c/0x410 [ 123.988828] ? save_stack+0xa9/0xd0 [ 123.992474] ? kasan_kmalloc+0xce/0xf0 [ 123.996370] ? kasan_slab_alloc+0xf/0x20 [ 124.000446] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 124.005143] ? do_execveat_common.isra.0+0x1000/0x1dd0 [ 124.010828] ? do_syscall_64+0x1e8/0x640 [ 124.014903] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 124.020274] ? trace_hardirqs_on+0x10/0x10 [ 124.024615] ? __lock_is_held+0xb6/0x140 [ 124.028676] ? check_preemption_disabled+0x3c/0x250 [ 124.033694] do_filp_open+0x18e/0x250 [ 124.037499] ? may_open_dev+0xe0/0xe0 [ 124.041312] ? __lock_is_held+0xb6/0x140 [ 124.045376] ? getname_kernel+0x53/0x350 [ 124.049441] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 124.055758] do_open_execat+0xe7/0x4a0 [ 124.059661] ? unregister_binfmt+0x170/0x170 [ 124.064199] ? getname_kernel+0x202/0x350 [ 124.068363] open_exec+0x37/0x70 [ 124.071839] load_elf_binary+0x77c/0x4d60 [ 124.076072] ? save_trace+0x290/0x290 [ 124.079890] ? search_binary_handler+0xff/0x6f0 [ 124.084707] ? find_held_lock+0x35/0x130 [ 124.088903] ? search_binary_handler+0xff/0x6f0 [ 124.093650] ? notesize.isra.0+0x80/0x80 [ 124.097725] ? lock_downgrade+0x740/0x740 [ 124.101874] search_binary_handler+0x149/0x6f0 [ 124.106648] do_execveat_common.isra.0+0x1000/0x1dd0 [ 124.111737] ? prepare_bprm_creds+0x120/0x120 [ 124.116288] SyS_execve+0x39/0x50 [ 124.119725] ? setup_new_exec+0x790/0x790 [ 124.124094] do_syscall_64+0x1e8/0x640 [ 124.128230] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 124.133109] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 124.138292] RIP: 0033:0x7faee08a3207 [ 124.141986] RSP: 002b:00007ffd29d6a178 EFLAGS: 00000206 ORIG_RAX: 000000000000003b [ 124.150998] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007faee08a3207 [ 124.158323] RDX: 0000000001c16e80 RSI: 00007ffd29d6a270 RDI: 00007ffd29d6b280 [ 124.165689] RBP: 0000000000625500 R08: 0000000000001c7e R09: 0000000000001c7e [ 124.173291] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000001c16e80 [ 124.180567] R13: 0000000000000007 R14: 0000000001bc7030 R15: 0000000000000005 [ 124.188447] Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 03 30 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5e 58 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 [ 124.208440] RIP: path_openat+0x20b/0x3db0 RSP: ffff88809638f868 [ 124.215526] ---[ end trace 2ddd1381135f8f62 ]--- [ 124.220592] Kernel panic - not syncing: Fatal exception [ 124.227752] Kernel Offset: disabled [ 124.231489] Rebooting in 86400 seconds..