[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 30.462788] audit: type=1800 audit(1538163090.523:33): pid=5319 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 [ 30.493394] audit: type=1800 audit(1538163090.523:34): pid=5319 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 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 34.888986] audit: type=1400 audit(1538163094.953:35): avc: denied { map } for pid=5497 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 '10.128.0.83' (ECDSA) to the list of known hosts. executing program [ 43.912264] audit: type=1400 audit(1538163103.973:36): avc: denied { map } for pid=5511 comm="syz-executor734" path="/root/syz-executor734933722" 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 [ 43.916925] kasan: CONFIG_KASAN_INLINE enabled [ 43.943301] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 43.951042] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 43.957275] CPU: 1 PID: 5511 Comm: syz-executor734 Not tainted 4.19.0-rc5+ #37 [ 43.964615] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.973973] RIP: 0010:rb_erase+0x306/0x3710 [ 43.978284] 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 [ 43.997177] RSP: 0018:ffff8801c452e918 EFLAGS: 00010202 [ 44.002532] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 44.009796] RDX: 1ffff100388a5d2b RSI: ffffffff8b5a08a0 RDI: 0000000000000008 [ 44.017054] RBP: ffff8801c452f320 R08: dffffc0000000000 R09: fffffbfff135d5c8 [ 44.024309] R10: fffffbfff135d5c8 R11: ffffffff89aeae43 R12: ffff8801bb46d8b0 [ 44.031561] R13: dffffc0000000000 R14: ffff8801c452f2f8 R15: ffff8801c452f438 [ 44.038942] FS: 0000000001ec1880(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 44.047251] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.053115] CR2: 0000000020000080 CR3: 00000001cc96d000 CR4: 00000000001406e0 [ 44.060374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.067693] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.074951] Call Trace: [ 44.077533] ? lockdep_on+0x50/0x50 [ 44.081144] ? rb_insert_color+0x1460/0x1460 [ 44.085545] ? noop_count+0x40/0x40 [ 44.089156] ? lock_pin_lock+0x350/0x350 [ 44.093206] ? noop_count+0x40/0x40 [ 44.096818] ? kasan_check_read+0x11/0x20 [ 44.100944] ? noop_count+0x40/0x40 [ 44.104559] ? noop_count+0x40/0x40 [ 44.108177] ? lock_pin_lock+0x350/0x350 [ 44.112221] ? mark_held_locks+0x130/0x130 [ 44.116438] ? check_usage_forwards+0x3e0/0x3e0 [ 44.121086] ? __bfs+0x385/0x7a0 [ 44.124439] ? noop_count+0x40/0x40 [ 44.128123] ? check_usage+0x1a9/0x790 [ 44.131998] ? lock_pin_lock+0x350/0x350 [ 44.136044] ? check_usage_forwards+0x3e0/0x3e0 [ 44.140696] ? __bfs+0x385/0x7a0 [ 44.144043] ? __lock_acquire+0x7ec/0x4ec0 [ 44.148310] ? lockdep_on+0x50/0x50 [ 44.151948] ? lock_pin_lock+0x350/0x350 [ 44.156413] ? mark_held_locks+0x130/0x130 [ 44.160641] ? kasan_check_read+0x11/0x20 [ 44.164776] ? __lock_acquire+0x2881/0x4ec0 [ 44.169095] ? mark_held_locks+0x130/0x130 [ 44.173314] ? print_usage_bug+0xc0/0xc0 [ 44.177366] ? _raw_spin_unlock+0x2c/0x50 [ 44.181500] ? graph_lock+0x170/0x170 [ 44.185285] ? ext4_exit_mballoc+0xc0/0xc0 [ 44.189503] ? __lock_acquire+0x7ec/0x4ec0 [ 44.193718] ? find_held_lock+0x36/0x1c0 [ 44.197759] ? mark_held_locks+0x130/0x130 [ 44.201973] ? lock_downgrade+0x900/0x900 [ 44.206105] ? ext4_es_scan+0x960/0x960 [ 44.210058] ? lock_release+0x970/0x970 [ 44.214021] ? do_raw_write_trylock+0x1c0/0x1c0 [ 44.218674] ? kasan_check_write+0x14/0x20 [ 44.222891] ? lock_acquire+0x1ed/0x520 [ 44.226852] ? integrity_inode_free+0x77/0x320 [ 44.231559] ? ext4_es_remove_extent+0x151/0x500 [ 44.236307] ? lock_release+0x970/0x970 [ 44.240269] ? kasan_check_write+0x14/0x20 [ 44.244488] ? do_raw_write_lock+0xbd/0x1b0 [ 44.248800] integrity_inode_free+0x12f/0x320 [ 44.253279] security_inode_free+0x19/0x90 [ 44.257496] __destroy_inode+0x328/0x820 [ 44.261547] ? generic_update_time+0x450/0x450 [ 44.266112] ? evict+0x5d8/0x980 [ 44.269461] ? lock_downgrade+0x900/0x900 [ 44.273592] ? __inode_wait_for_writeback+0x2cf/0x380 [ 44.278767] destroy_inode+0xda/0x200 [ 44.282549] ? __destroy_inode+0x820/0x820 [ 44.286762] ? kasan_check_write+0x14/0x20 [ 44.290977] ? do_raw_spin_lock+0xc1/0x200 [ 44.295193] evict+0x5e0/0x980 [ 44.298371] ? destroy_inode+0x200/0x200 [ 44.302413] ? iput+0x671/0xa90 [ 44.305673] ? lock_downgrade+0x900/0x900 [ 44.309803] ? kasan_check_read+0x11/0x20 [ 44.313936] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 44.318575] ? lock_downgrade+0x900/0x900 [ 44.322714] iput+0x679/0xa90 [ 44.325801] ? inode_add_lru+0x2a0/0x2a0 [ 44.329844] ? up_write+0x7b/0x220 [ 44.333373] ? up_read+0x110/0x110 [ 44.336944] ? up_read+0x110/0x110 [ 44.340483] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.346007] ? check_preemption_disabled+0x48/0x200 [ 44.351009] ext4_ioctl+0x236f/0x4210 [ 44.354829] ? ext4_ioctl_group_add+0x560/0x560 [ 44.359490] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 44.365339] ? kasan_check_read+0x11/0x20 [ 44.369501] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 44.374763] ? rcu_bh_qs+0xc0/0xc0 [ 44.378284] ? unwind_dump+0x190/0x190 [ 44.382159] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.387679] ? avc_has_extended_perms+0xab2/0x15a0 [ 44.392596] ? regset_tls_active+0x67/0xc0 [ 44.396812] ? avc_ss_reset+0x190/0x190 [ 44.400771] ? save_stack+0xa9/0xd0 [ 44.404380] ? save_stack+0x43/0xd0 [ 44.407985] ? __kasan_slab_free+0x102/0x150 [ 44.412379] ? kasan_slab_free+0xe/0x10 [ 44.416333] ? kmem_cache_free+0x83/0x290 [ 44.420469] ? putname+0xf2/0x130 [ 44.423901] ? do_sys_open+0x54d/0x700 [ 44.427767] ? __x64_sys_openat+0x9d/0x100 [ 44.432109] ? do_syscall_64+0x1b9/0x820 [ 44.436158] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 44.441517] ? ___might_sleep+0x1ed/0x300 [ 44.445646] ? arch_local_save_flags+0x40/0x40 [ 44.450206] ? kasan_check_write+0x14/0x20 [ 44.454425] ? trace_hardirqs_off+0xb8/0x310 [ 44.458816] ? ext4_ioctl_group_add+0x560/0x560 [ 44.463468] do_vfs_ioctl+0x1de/0x1720 [ 44.467339] ? ioctl_preallocate+0x300/0x300 [ 44.471737] ? selinux_file_mprotect+0x620/0x620 [ 44.476472] ? path_lookupat.isra.43+0x2e1/0xc00 [ 44.481218] ? rcu_read_lock_sched_held+0x108/0x120 [ 44.486220] ? kmem_cache_free+0x24f/0x290 [ 44.490437] ? putname+0xf7/0x130 [ 44.493874] ? do_syscall_64+0x9a/0x820 [ 44.497834] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.503361] ? security_file_ioctl+0x94/0xc0 [ 44.507950] ksys_ioctl+0xa9/0xd0 [ 44.511395] __x64_sys_ioctl+0x73/0xb0 [ 44.515266] do_syscall_64+0x1b9/0x820 [ 44.519138] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 44.524598] ? syscall_return_slowpath+0x5e0/0x5e0 [ 44.529518] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.534343] ? trace_hardirqs_on_caller+0x310/0x310 [ 44.539358] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 44.544365] ? prepare_exit_to_usermode+0x291/0x3b0 [ 44.549372] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.554204] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 44.559377] RIP: 0033:0x440009 [ 44.562605] 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 [ 44.581536] RSP: 002b:00007ffe4cef8b28 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 44.589237] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 44.596493] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 44.603741] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 44.611045] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 44.618303] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 44.625557] Modules linked in: [ 44.629037] ---[ end trace a5a0ed48877fa17e ]--- [ 44.633801] RIP: 0010:rb_erase+0x306/0x3710 [ 44.638148] 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 [ 44.657126] RSP: 0018:ffff8801c452e918 EFLAGS: 00010202 [ 44.662485] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 44.669789] RDX: 1ffff100388a5d2b RSI: ffffffff8b5a08a0 RDI: 0000000000000008 [ 44.677066] RBP: ffff8801c452f320 R08: dffffc0000000000 R09: fffffbfff135d5c8 [ 44.684360] R10: fffffbfff135d5c8 R11: ffffffff89aeae43 R12: ffff8801bb46d8b0 [ 44.691617] R13: dffffc0000000000 R14: ffff8801c452f2f8 R15: ffff8801c452f438 [ 44.698908] FS: 0000000001ec1880(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 44.707217] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.713084] CR2: 0000000020000080 CR3: 00000001cc96d000 CR4: 00000000001406e0 [ 44.720399] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.727679] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.734969] Kernel panic - not syncing: Fatal exception [ 44.741218] Kernel Offset: disabled [ 44.744841] Rebooting in 86400 seconds..