[....] Starting periodic command scheduler: cron[?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. [ 30.269329] audit: type=1800 audit(1540126406.321:33): pid=5323 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 [ 30.291677] audit: type=1800 audit(1540126406.321:34): pid=5323 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: [ 45.166630] audit: type=1400 audit(1540126421.211:35): avc: denied { map } for pid=5502 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 '10.128.10.45' (ECDSA) to the list of known hosts. executing program [ 51.846167] audit: type=1400 audit(1540126427.891:36): avc: denied { map } for pid=5514 comm="syz-executor355" path="/root/syz-executor355579876" 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 [ 51.850313] kasan: CONFIG_KASAN_INLINE enabled [ 51.877747] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 51.885130] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 51.891368] CPU: 0 PID: 5514 Comm: syz-executor355 Not tainted 4.19.0-rc8+ #74 [ 51.898739] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.908084] RIP: 0010:rb_erase+0x306/0x3710 [ 51.912392] 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 [ 51.931307] RSP: 0018:ffff8801c498e918 EFLAGS: 00010202 [ 51.936667] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 51.943931] RDX: 1ffff10038931d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 51.951202] RBP: ffff8801c498f320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 51.958451] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b2ed13f0 [ 51.965700] R13: dffffc0000000000 R14: ffff8801c498f2f8 R15: ffff8801c498f438 [ 51.972956] FS: 0000000001148880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 51.981163] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.987024] CR2: 0000000020000080 CR3: 00000001c8ae4000 CR4: 00000000001406f0 [ 51.994276] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.001526] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.008777] Call Trace: [ 52.011348] ? lockdep_on+0x50/0x50 [ 52.014960] ? rb_insert_color+0x1460/0x1460 [ 52.019354] ? noop_count+0x40/0x40 [ 52.022969] ? lock_pin_lock+0x350/0x350 [ 52.027043] ? mark_held_locks+0x130/0x130 [ 52.031277] ? kasan_check_read+0x11/0x20 [ 52.035410] ? noop_count+0x40/0x40 [ 52.039017] ? lock_pin_lock+0x350/0x350 [ 52.043057] ? mark_held_locks+0x130/0x130 [ 52.047273] ? check_usage_forwards+0x3e0/0x3e0 [ 52.051923] ? __bfs+0x385/0x7a0 [ 52.055269] ? noop_count+0x40/0x40 [ 52.058877] ? check_usage+0x1a9/0x790 [ 52.062742] ? lock_pin_lock+0x350/0x350 [ 52.066786] ? check_usage_forwards+0x3e0/0x3e0 [ 52.071435] ? __bfs+0x385/0x7a0 [ 52.074781] ? modules_open+0xa0/0xa0 [ 52.078563] ? lockdep_on+0x50/0x50 [ 52.082169] ? lock_pin_lock+0x350/0x350 [ 52.086227] ? mark_held_locks+0x130/0x130 [ 52.090462] ? kasan_check_read+0x11/0x20 [ 52.094594] ? __lock_acquire+0x2881/0x4ec0 [ 52.098900] ? mark_held_locks+0x130/0x130 [ 52.103113] ? print_usage_bug+0xc0/0xc0 [ 52.107160] ? _raw_spin_unlock+0x2c/0x50 [ 52.111288] ? graph_lock+0x170/0x170 [ 52.115081] ? ext4_exit_mballoc+0xc0/0xc0 [ 52.119327] ? __lock_acquire+0x7ec/0x4ec0 [ 52.123543] ? find_held_lock+0x36/0x1c0 [ 52.127585] ? mark_held_locks+0x130/0x130 [ 52.131800] ? lock_downgrade+0x900/0x900 [ 52.135925] ? ext4_es_scan+0x960/0x960 [ 52.139925] ? lock_release+0x970/0x970 [ 52.143897] ? do_raw_write_trylock+0x1c0/0x1c0 [ 52.148550] ? kasan_check_write+0x14/0x20 [ 52.152780] ? lock_acquire+0x1ed/0x520 [ 52.156736] ? integrity_inode_free+0x77/0x320 [ 52.161299] ? ext4_es_remove_extent+0x151/0x500 [ 52.166052] ? lock_release+0x970/0x970 [ 52.170013] ? kasan_check_write+0x14/0x20 [ 52.174229] ? do_raw_write_lock+0xbd/0x1e0 [ 52.178564] integrity_inode_free+0x12f/0x320 [ 52.183095] security_inode_free+0x19/0x90 [ 52.187311] __destroy_inode+0x328/0x820 [ 52.191351] ? generic_update_time+0x450/0x450 [ 52.195916] ? evict+0x5d8/0x980 [ 52.199266] ? lock_downgrade+0x900/0x900 [ 52.203403] ? __inode_wait_for_writeback+0x2cf/0x380 [ 52.208592] destroy_inode+0xda/0x200 [ 52.212380] ? __destroy_inode+0x820/0x820 [ 52.216598] ? kasan_check_write+0x14/0x20 [ 52.220813] ? do_raw_spin_lock+0xc1/0x230 [ 52.225028] evict+0x5e0/0x980 [ 52.228212] ? destroy_inode+0x200/0x200 [ 52.232253] ? iput+0x671/0xa90 [ 52.235515] ? lock_downgrade+0x900/0x900 [ 52.239656] ? kasan_check_read+0x11/0x20 [ 52.243802] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 52.248376] ? lock_downgrade+0x900/0x900 [ 52.252506] iput+0x679/0xa90 [ 52.255595] ? inode_add_lru+0x2a0/0x2a0 [ 52.259757] ? up_write+0x7b/0x220 [ 52.263275] ? up_read+0x110/0x110 [ 52.266793] ? up_read+0x110/0x110 [ 52.270317] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.275832] ? check_preemption_disabled+0x48/0x280 [ 52.280834] ext4_ioctl+0x236f/0x4210 [ 52.284663] ? ext4_ioctl_group_add+0x560/0x560 [ 52.289316] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 52.295094] ? kasan_check_read+0x11/0x20 [ 52.299224] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 52.304479] ? rcu_bh_qs+0xc0/0xc0 [ 52.308005] ? unwind_dump+0x190/0x190 [ 52.311903] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.317425] ? avc_has_extended_perms+0xab2/0x15a0 [ 52.322339] ? convert_from_fxsr+0x157/0x7d0 [ 52.326725] ? avc_ss_reset+0x190/0x190 [ 52.330701] ? save_stack+0xa9/0xd0 [ 52.334304] ? save_stack+0x43/0xd0 [ 52.337926] ? __kasan_slab_free+0x102/0x150 [ 52.342312] ? kasan_slab_free+0xe/0x10 [ 52.346267] ? kmem_cache_free+0x83/0x290 [ 52.350406] ? putname+0xf2/0x130 [ 52.353852] ? do_sys_open+0x54d/0x700 [ 52.357720] ? __x64_sys_openat+0x9d/0x100 [ 52.361936] ? do_syscall_64+0x1b9/0x820 [ 52.365985] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.371349] ? ___might_sleep+0x1ed/0x300 [ 52.375480] ? arch_local_save_flags+0x40/0x40 [ 52.380045] ? kasan_check_write+0x14/0x20 [ 52.384263] ? trace_hardirqs_off+0xb8/0x310 [ 52.388656] ? ext4_ioctl_group_add+0x560/0x560 [ 52.393309] do_vfs_ioctl+0x1de/0x1720 [ 52.397179] ? ioctl_preallocate+0x300/0x300 [ 52.401568] ? selinux_file_mprotect+0x620/0x620 [ 52.406316] ? path_openat+0x3a31/0x5160 [ 52.410376] ? rcu_read_lock_sched_held+0x108/0x120 [ 52.415381] ? kmem_cache_free+0x24f/0x290 [ 52.419598] ? putname+0xf7/0x130 [ 52.423034] ? do_syscall_64+0x9a/0x820 [ 52.426992] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.432510] ? security_file_ioctl+0x94/0xc0 [ 52.436902] ksys_ioctl+0xa9/0xd0 [ 52.440369] __x64_sys_ioctl+0x73/0xb0 [ 52.444241] do_syscall_64+0x1b9/0x820 [ 52.448110] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 52.453460] ? syscall_return_slowpath+0x5e0/0x5e0 [ 52.458379] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.463212] ? trace_hardirqs_on_caller+0x310/0x310 [ 52.468228] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 52.473243] ? prepare_exit_to_usermode+0x291/0x3b0 [ 52.478275] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.483106] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.488273] RIP: 0033:0x440009 [ 52.491448] 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 [ 52.510335] RSP: 002b:00007ffd30bce8e8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 52.518033] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 52.525283] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 52.532535] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 52.539800] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 52.547056] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 52.554307] Modules linked in: [ 52.557900] ---[ end trace 4a97d1f010a1e2e9 ]--- [ 52.562685] RIP: 0010:rb_erase+0x306/0x3710 [ 52.567045] 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 [ 52.585990] RSP: 0018:ffff8801c498e918 EFLAGS: 00010202 [ 52.591377] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 52.598661] RDX: 1ffff10038931d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 52.605916] RBP: ffff8801c498f320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 52.613205] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b2ed13f0 [ 52.620504] R13: dffffc0000000000 R14: ffff8801c498f2f8 R15: ffff8801c498f438 [ 52.627791] FS: 0000000001148880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 52.636012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.641918] CR2: 0000000020000080 CR3: 00000001c8ae4000 CR4: 00000000001406f0 [ 52.649201] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.656498] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.663767] Kernel panic - not syncing: Fatal exception [ 52.670035] Kernel Offset: disabled [ 52.673659] Rebooting in 86400 seconds..