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 Sh[ 31.580024] audit: type=1800 audit(1537924318.868:33): pid=5382 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=2432 res=0 ell server: sshd[ 31.602599] audit: type=1800 audit(1537924318.878:34): pid=5382 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=2423 res=0 [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.324742] audit: type=1400 audit(1537924322.618:35): avc: denied { map } for pid=5559 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 '10.128.0.91' (ECDSA) to the list of known hosts. executing program [ 41.998389] audit: type=1400 audit(1537924329.288:36): avc: denied { map } for pid=5573 comm="syz-executor051" path="/root/syz-executor051378505" 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 [ 42.003433] kasan: CONFIG_KASAN_INLINE enabled [ 42.029399] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.036920] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.043142] CPU: 1 PID: 5573 Comm: syz-executor051 Not tainted 4.19.0-rc5+ #33 [ 42.050491] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.059835] RIP: 0010:rb_erase+0x306/0x3710 [ 42.064137] Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00 [ 42.083049] RSP: 0018:ffff8801b8826918 EFLAGS: 00010202 [ 42.088394] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 42.095644] RDX: 1ffff10037104d2b RSI: ffffffff8b5a08a0 RDI: 0000000000000008 [ 42.102899] RBP: ffff8801b8827320 R08: dffffc0000000000 R09: fffffbfff135d5c8 [ 42.110154] R10: fffffbfff135d5c8 R11: ffffffff89aeae43 R12: ffff8801b17683f0 [ 42.117399] R13: dffffc0000000000 R14: ffff8801b88272f8 R15: ffff8801b8827438 [ 42.124687] FS: 0000000001ac0880(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 42.132890] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.138750] CR2: 0000000020000700 CR3: 00000001c4a59000 CR4: 00000000001406e0 [ 42.146002] Call Trace: [ 42.148573] ? lockdep_on+0x50/0x50 [ 42.152194] ? rb_insert_color+0x1460/0x1460 [ 42.156585] ? noop_count+0x40/0x40 [ 42.160190] ? lock_pin_lock+0x350/0x350 [ 42.164233] ? noop_count+0x40/0x40 [ 42.167847] ? kasan_check_read+0x11/0x20 [ 42.171975] ? noop_count+0x40/0x40 [ 42.175583] ? noop_count+0x40/0x40 [ 42.179195] ? lock_pin_lock+0x350/0x350 [ 42.183254] ? mark_held_locks+0x130/0x130 [ 42.187475] ? check_usage_forwards+0x3e0/0x3e0 [ 42.192124] ? __bfs+0x385/0x7a0 [ 42.195470] ? noop_count+0x40/0x40 [ 42.199085] ? check_usage+0x1a9/0x790 [ 42.202980] ? lock_pin_lock+0x350/0x350 [ 42.207026] ? check_usage_forwards+0x3e0/0x3e0 [ 42.211678] ? __bfs+0x385/0x7a0 [ 42.215027] ? __lock_acquire+0x7ec/0x4ec0 [ 42.219287] ? lockdep_on+0x50/0x50 [ 42.222900] ? lock_pin_lock+0x350/0x350 [ 42.226945] ? mark_held_locks+0x130/0x130 [ 42.231447] ? kasan_check_read+0x11/0x20 [ 42.235576] ? __lock_acquire+0x2881/0x4ec0 [ 42.239900] ? mark_held_locks+0x130/0x130 [ 42.244137] ? print_usage_bug+0xc0/0xc0 [ 42.248194] ? _raw_spin_unlock+0x2c/0x50 [ 42.252328] ? graph_lock+0x170/0x170 [ 42.256122] ? ext4_exit_mballoc+0xc0/0xc0 [ 42.260336] ? __lock_acquire+0x7ec/0x4ec0 [ 42.264552] ? find_held_lock+0x36/0x1c0 [ 42.268594] ? mark_held_locks+0x130/0x130 [ 42.272809] ? lock_downgrade+0x900/0x900 [ 42.276940] ? ext4_es_scan+0x960/0x960 [ 42.280895] ? lock_release+0x970/0x970 [ 42.284873] ? do_raw_write_trylock+0x1c0/0x1c0 [ 42.289526] ? kasan_check_write+0x14/0x20 [ 42.293745] ? lock_acquire+0x1ed/0x520 [ 42.297719] ? integrity_inode_free+0x77/0x320 [ 42.302295] ? ext4_es_remove_extent+0x151/0x500 [ 42.307034] ? lock_release+0x970/0x970 [ 42.311005] ? kasan_check_write+0x14/0x20 [ 42.315232] ? do_raw_write_lock+0xbd/0x1b0 [ 42.319536] integrity_inode_free+0x12f/0x320 [ 42.324018] security_inode_free+0x19/0x90 [ 42.328234] __destroy_inode+0x328/0x820 [ 42.332283] ? generic_update_time+0x450/0x450 [ 42.337052] ? evict+0x5d8/0x980 [ 42.340402] ? lock_downgrade+0x900/0x900 [ 42.344536] ? __inode_wait_for_writeback+0x2cf/0x380 [ 42.349710] destroy_inode+0xda/0x200 [ 42.353504] ? __destroy_inode+0x820/0x820 [ 42.357729] ? kasan_check_write+0x14/0x20 [ 42.361948] ? do_raw_spin_lock+0xc1/0x200 [ 42.366163] evict+0x5e0/0x980 [ 42.369338] ? destroy_inode+0x200/0x200 [ 42.373381] ? iput+0x671/0xa90 [ 42.376644] ? lock_downgrade+0x900/0x900 [ 42.380787] ? kasan_check_read+0x11/0x20 [ 42.384918] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 42.389480] ? lock_downgrade+0x900/0x900 [ 42.393610] iput+0x679/0xa90 [ 42.396698] ? inode_add_lru+0x2a0/0x2a0 [ 42.400738] ? up_write+0x7b/0x220 [ 42.404259] ? up_read+0x110/0x110 [ 42.407782] ? up_read+0x110/0x110 [ 42.411307] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.416824] ? check_preemption_disabled+0x48/0x200 [ 42.421827] ext4_ioctl+0x236f/0x4210 [ 42.425610] ? ext4_ioctl_group_add+0x560/0x560 [ 42.430299] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 42.436077] ? kasan_check_read+0x11/0x20 [ 42.440205] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 42.445464] ? rcu_bh_qs+0xc0/0xc0 [ 42.448985] ? rcu_bh_qs+0xc0/0xc0 [ 42.452521] ? unwind_dump+0x190/0x190 [ 42.456417] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.461941] ? avc_has_extended_perms+0xab2/0x15a0 [ 42.466854] ? avc_ss_reset+0x190/0x190 [ 42.470813] ? save_stack+0xa9/0xd0 [ 42.474421] ? save_stack+0x43/0xd0 [ 42.478027] ? __kasan_slab_free+0x102/0x150 [ 42.482426] ? kasan_slab_free+0xe/0x10 [ 42.486380] ? kmem_cache_free+0x83/0x290 [ 42.490504] ? putname+0xf2/0x130 [ 42.493939] ? do_sys_open+0x54d/0x700 [ 42.497807] ? __x64_sys_open+0x7e/0xc0 [ 42.501789] ? do_syscall_64+0x1b9/0x820 [ 42.505832] ? kasan_check_read+0x11/0x20 [ 42.509963] ? ___might_sleep+0x1ed/0x300 [ 42.514097] ? arch_local_save_flags+0x40/0x40 [ 42.518660] ? kasan_check_write+0x14/0x20 [ 42.522892] ? trace_hardirqs_off+0xb8/0x310 [ 42.527301] ? ext4_ioctl_group_add+0x560/0x560 [ 42.531954] do_vfs_ioctl+0x1de/0x1720 [ 42.535842] ? ioctl_preallocate+0x300/0x300 [ 42.540236] ? selinux_file_mprotect+0x620/0x620 [ 42.545007] ? rcu_read_lock_sched_held+0x108/0x120 [ 42.550008] ? kmem_cache_free+0x18b/0x290 [ 42.554223] ? putname+0xf7/0x130 [ 42.557685] ? do_syscall_64+0x9a/0x820 [ 42.561644] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.567164] ? security_file_ioctl+0x94/0xc0 [ 42.571568] ksys_ioctl+0xa9/0xd0 [ 42.575006] __x64_sys_ioctl+0x73/0xb0 [ 42.578877] do_syscall_64+0x1b9/0x820 [ 42.582775] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 42.588123] ? syscall_return_slowpath+0x5e0/0x5e0 [ 42.593054] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.597880] ? trace_hardirqs_on_caller+0x310/0x310 [ 42.602880] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 42.607878] ? prepare_exit_to_usermode+0x291/0x3b0 [ 42.612881] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.617709] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.622875] RIP: 0033:0x440029 [ 42.626050] 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 42.644938] RSP: 002b:00007ffeb835b4d8 EFLAGS: 00000207 ORIG_RAX: 0000000000000010 [ 42.652633] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440029 [ 42.659903] RDX: 0000000000440029 RSI: 0000000000006611 RDI: 0000000000000003 [ 42.667176] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 42.674426] R10: 0000000000000000 R11: 0000000000000207 R12: 00000000004018b0 [ 42.681675] R13: 0000000000401940 R14: 0000000000000000 R15: 0000000000000000 [ 42.688956] Modules linked in: [ 42.692205] ---[ end trace 4e70f774671b32c9 ]--- [ 42.696963] RIP: 0010:rb_erase+0x306/0x3710 [ 42.701308] Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00 [ 42.720237] RSP: 0018:ffff8801b8826918 EFLAGS: 00010202 [ 42.725635] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 42.732944] RDX: 1ffff10037104d2b RSI: ffffffff8b5a08a0 RDI: 0000000000000008 [ 42.740198] RBP: ffff8801b8827320 R08: dffffc0000000000 R09: fffffbfff135d5c8 [ 42.747487] R10: fffffbfff135d5c8 R11: ffffffff89aeae43 R12: ffff8801b17683f0 [ 42.754771] R13: dffffc0000000000 R14: ffff8801b88272f8 R15: ffff8801b8827438 [ 42.762087] FS: 0000000001ac0880(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 42.770309] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.776235] CR2: 0000000020000700 CR3: 00000001c4a59000 CR4: 00000000001406e0 [ 42.783524] Kernel panic - not syncing: Fatal exception [ 42.789795] Kernel Offset: disabled [ 42.793430] Rebooting in 86400 seconds..