[ 33.914792] audit: type=1800 audit(1581816094.727:33): pid=7099 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 [ 33.942463] audit: type=1800 audit(1581816094.727:34): pid=7099 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: [ 35.982503] random: sshd: uninitialized urandom read (32 bytes read) [ 36.249401] audit: type=1400 audit(1581816097.057:35): avc: denied { map } for pid=7269 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 [ 36.296117] random: sshd: uninitialized urandom read (32 bytes read) [ 37.070751] random: sshd: uninitialized urandom read (32 bytes read) [ 37.266784] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.14' (ECDSA) to the list of known hosts. [ 44.369134] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 44.481468] audit: type=1400 audit(1581816105.297:36): avc: denied { map } for pid=7281 comm="syz-executor803" path="/root/syz-executor803234994" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 44.566410] kasan: CONFIG_KASAN_INLINE enabled [ 44.566430] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 44.566440] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 44.566443] Modules linked in: [ 44.566453] CPU: 1 PID: 7281 Comm: syz-executor803 Not tainted 4.14.171-syzkaller #0 [ 44.566456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.566460] task: ffff888098848580 task.stack: ffff888086f88000 [ 44.566473] RIP: 0010:do_con_write.part.0+0x7d6/0x1b50 [ 44.566476] RSP: 0018:ffff888086f8f970 EFLAGS: 00010203 [ 44.566482] RAX: 0000000020000001 RBX: 000000010000000e RCX: 0000000000000002 [ 44.566485] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880811631fd [ 44.566489] RBP: ffff888086f8fac0 R08: ffff888098848580 R09: 0000000000000000 [ 44.566492] R10: 0000000000000000 R11: ffff888098848580 R12: dffffc0000000000 [ 44.566495] R13: 000000000000074d R14: ffff88808116320c R15: ffff888081162e80 [ 44.566500] FS: 0000000001c8f880(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 [ 44.566503] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.566507] CR2: 00007fdac969d000 CR3: 00000000a0e7d000 CR4: 00000000001406e0 [ 44.566514] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.566518] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.566520] Call Trace: [ 44.566536] ? do_con_trol+0x5b40/0x5b40 [ 44.566547] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 44.566555] con_write+0x38/0xc0 [ 44.566563] n_tty_write+0x38b/0xf20 [ 44.566576] ? process_echoes+0x150/0x150 [ 44.566583] ? do_wait_intr_irq+0x2a0/0x2a0 [ 44.566591] ? kasan_check_write+0x14/0x20 [ 44.566599] ? _copy_from_user+0x99/0x110 [ 44.566606] tty_write+0x3f6/0x700 [ 44.566616] ? process_echoes+0x150/0x150 [ 44.566624] __vfs_write+0x105/0x6b0 [ 44.566630] ? tty_read+0x270/0x270 [ 44.566636] ? kernel_read+0x120/0x120 [ 44.566645] ? __inode_security_revalidate+0xd6/0x130 [ 44.566651] ? avc_policy_seqno+0x9/0x20 [ 44.566658] ? selinux_file_permission+0x85/0x480 [ 44.566666] ? security_file_permission+0x89/0x1f0 [ 44.566672] ? rw_verify_area+0xea/0x2b0 [ 44.566686] ? putname+0xe0/0x120 [ 44.566692] vfs_write+0x198/0x500 [ 44.566700] SyS_write+0xfd/0x230 [ 44.566707] ? SyS_read+0x230/0x230 [ 44.566715] ? do_syscall_64+0x53/0x640 [ 44.566721] ? SyS_read+0x230/0x230 [ 44.566728] do_syscall_64+0x1e8/0x640 [ 44.566735] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.566744] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 44.566748] RIP: 0033:0x4403c9 [ 44.566751] RSP: 002b:00007ffe5abec248 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 44.566758] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004403c9 [ 44.566761] RDX: 0000000000000002 RSI: 0000000020002b40 RDI: 0000000000000004 [ 44.566765] RBP: 00000000006ca018 R08: 000000000000000e R09: 00000000004002c8 [ 44.566769] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401cb0 [ 44.566773] R13: 0000000000401d40 R14: 0000000000000000 R15: 0000000000000000 [ 44.566780] Code: 66 44 03 ad 30 ff ff ff e8 a8 ad 0b fe 48 8b 85 f0 fe ff ff 80 38 00 0f 85 97 11 00 00 49 8b 9f a0 03 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 20 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f [ 44.566919] RIP: do_con_write.part.0+0x7d6/0x1b50 RSP: ffff888086f8f970 [ 44.567967] ---[ end trace 235a20e1a4771896 ]--- [ 44.567972] Kernel panic - not syncing: Fatal exception [ 44.569299] Kernel Offset: disabled [ 44.903313] Rebooting in 86400 seconds..