[....] Starting enhanced syslogd: rsyslogd[ 12.524534] audit: type=1400 audit(1516307839.909:5): avc: denied { syslog } for pid=3508 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. 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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.689158] audit: type=1400 audit(1516307847.073:6): avc: denied { map } for pid=3648 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 '10.128.0.9' (ECDSA) to the list of known hosts. [ 40.889151] audit: type=1400 audit(1516307868.273:7): avc: denied { map } for pid=3665 comm="syzkaller312387" path="/root/syzkaller312387249" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 40.891813] kasan: CONFIG_KASAN_INLINE enabled [ 40.891817] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.891823] general protection fault: 0000 [#1] SMP KASAN [ 40.891829] Dumping ftrace buffer: [ 40.891833] (ftrace buffer empty) [ 40.891835] Modules linked in: [ 40.891842] CPU: 0 PID: 3665 Comm: syzkaller312387 Not tainted 4.15.0-rc8+ #268 [ 40.891844] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.891858] RIP: 0010:nfs_idmap_legacy_upcall+0x290/0x4f0 [ 40.891860] RSP: 0018:ffff8801d952fbd0 EFLAGS: 00010206 [ 40.891864] RAX: dffffc0000000000 RBX: 1ffff1003b2a5f7c RCX: ffffffff82083117 [ 40.891866] RDX: 0000000000000005 RSI: 1ffff1003b2f0953 RDI: 0000000000000028 [ 40.891869] RBP: ffff8801d952fc68 R08: 1ffff1003b2a5f29 R09: 0000000000000000 [ 40.891871] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 40.891874] R13: ffff8801d964cd00 R14: 1ffff1003b2a5f80 R15: ffff8801d97311c0 [ 40.891878] FS: 0000000002467880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 40.891880] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.891883] CR2: 0000000020006000 CR3: 00000001d97c4001 CR4: 00000000001606f0 [ 40.891888] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.891891] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.891892] Call Trace: [ 40.891899] ? nfs_idmap_lookup_id+0x190/0x190 [ 40.891913] request_key_and_link+0x10fd/0x16c0 [ 40.891919] ? nfs_idmap_lookup_id+0x190/0x190 [ 40.891924] ? call_sbin_request_key+0xe10/0xe10 [ 40.891934] ? lock_release+0xa40/0xa40 [ 40.891940] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 40.891946] ? join_session_keyring+0x300/0x300 [ 40.891953] ? rcu_note_context_switch+0x710/0x710 [ 40.891959] ? __might_sleep+0x95/0x190 [ 40.891965] ? keyring_alloc+0xb0/0xb0 [ 40.891970] ? key_default_cmp+0x90/0x90 [ 40.891980] SyS_request_key+0x18c/0x2d0 [ 40.891985] ? SyS_add_key+0x380/0x380 [ 40.891996] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 40.892011] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 40.892015] RIP: 0033:0x43fce9 [ 40.892017] RSP: 002b:00007ffc405e62e8 EFLAGS: 00000217 ORIG_RAX: 00000000000000f9 [ 40.892020] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9 [ 40.892023] RDX: 0000000020000000 RSI: 0000000020000000 RDI: 0000000020005ff6 [ 40.892025] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 40.892027] R10: 00000000fffffffe R11: 0000000000000217 R12: 0000000000401610 [ 40.892029] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 [ 40.892038] Code: 89 85 68 ff ff ff 66 41 89 14 06 78 47 e8 79 f9 67 ff 48 8b 85 70 ff ff ff 48 8d 78 28 48 8b 85 68 ff ff ff 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 39 02 00 00 48 8b 85 70 ff ff ff 48 83 78 28 [ 40.892105] RIP: nfs_idmap_legacy_upcall+0x290/0x4f0 RSP: ffff8801d952fbd0 [ 40.892133] ---[ end trace 4ab6ef81564187ba ]--- [ 40.892136] Kernel panic - not syncing: Fatal exception [ 40.915446] Dumping ftrace buffer: [ 40.915451] (ftrace buffer empty) [ 40.915454] Kernel Offset: disabled [ 41.206264] Rebooting in 86400 seconds..