Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 30.645424] audit: type=1800 audit(1539924453.968:33): pid=5300 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 [ 30.667687] audit: type=1800 audit(1539924453.968:34): pid=5300 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: [ 40.280294] audit: type=1400 audit(1539924463.598:35): avc: denied { map } for pid=5478 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 '10.128.0.51' (ECDSA) to the list of known hosts. executing program [ 47.023354] audit: type=1400 audit(1539924470.348:36): avc: denied { map } for pid=5491 comm="syz-executor877" path="/root/syz-executor877738245" 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 [ 47.028331] kasan: CONFIG_KASAN_INLINE enabled [ 47.054623] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 47.062171] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 47.068413] CPU: 1 PID: 5491 Comm: syz-executor877 Not tainted 4.19.0-rc8+ #69 [ 47.075758] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.085105] RIP: 0010:rb_erase+0x306/0x3710 [ 47.089419] 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 [ 47.108518] RSP: 0018:ffff8801cb486918 EFLAGS: 00010202 [ 47.113871] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 47.121236] RDX: 1ffff10039690d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 47.128499] RBP: ffff8801cb487320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 47.135765] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b0ef43b0 [ 47.143124] R13: dffffc0000000000 R14: ffff8801cb4872f8 R15: ffff8801cb487438 [ 47.150381] FS: 000000000113a880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 47.158591] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.164462] CR2: 00000000200000c0 CR3: 00000001b3852000 CR4: 00000000001406e0 [ 47.171734] Call Trace: [ 47.174325] ? lockdep_on+0x50/0x50 [ 47.177946] ? rb_insert_color+0x1460/0x1460 [ 47.182347] ? noop_count+0x40/0x40 [ 47.185988] ? lock_pin_lock+0x350/0x350 [ 47.190050] ? mark_held_locks+0x130/0x130 [ 47.194277] ? kasan_check_read+0x11/0x20 [ 47.198414] ? noop_count+0x40/0x40 [ 47.202029] ? lock_pin_lock+0x350/0x350 [ 47.206081] ? mark_held_locks+0x130/0x130 [ 47.210312] ? check_usage_forwards+0x3e0/0x3e0 [ 47.214975] ? __bfs+0x385/0x7a0 [ 47.218325] ? noop_count+0x40/0x40 [ 47.221942] ? check_usage+0x1a9/0x790 [ 47.225818] ? lock_pin_lock+0x350/0x350 [ 47.229870] ? check_usage_forwards+0x3e0/0x3e0 [ 47.234570] ? __bfs+0x385/0x7a0 [ 47.237939] ? modules_open+0xa0/0xa0 [ 47.241787] ? lockdep_on+0x50/0x50 [ 47.245404] ? lock_pin_lock+0x350/0x350 [ 47.249498] ? mark_held_locks+0x130/0x130 [ 47.253774] ? kasan_check_read+0x11/0x20 [ 47.257941] ? __lock_acquire+0x2881/0x4ec0 [ 47.262271] ? mark_held_locks+0x130/0x130 [ 47.266493] ? print_usage_bug+0xc0/0xc0 [ 47.270544] ? _raw_spin_unlock+0x2c/0x50 [ 47.274792] ? graph_lock+0x170/0x170 [ 47.278578] ? ext4_exit_mballoc+0xc0/0xc0 [ 47.282798] ? __lock_acquire+0x7ec/0x4ec0 [ 47.287026] ? find_held_lock+0x36/0x1c0 [ 47.291075] ? mark_held_locks+0x130/0x130 [ 47.295302] ? lock_downgrade+0x900/0x900 [ 47.299443] ? ext4_es_scan+0x960/0x960 [ 47.303399] ? lock_release+0x970/0x970 [ 47.307358] ? do_raw_write_trylock+0x1c0/0x1c0 [ 47.312013] ? kasan_check_write+0x14/0x20 [ 47.316232] ? lock_acquire+0x1ed/0x520 [ 47.320191] ? integrity_inode_free+0x77/0x320 [ 47.324761] ? ext4_es_remove_extent+0x151/0x500 [ 47.329522] ? lock_release+0x970/0x970 [ 47.333486] ? kasan_check_write+0x14/0x20 [ 47.337707] ? do_raw_write_lock+0xbd/0x1b0 [ 47.342014] integrity_inode_free+0x12f/0x320 [ 47.346503] security_inode_free+0x19/0x90 [ 47.350719] __destroy_inode+0x328/0x820 [ 47.354935] ? generic_update_time+0x450/0x450 [ 47.359510] ? evict+0x5d8/0x980 [ 47.362863] ? lock_downgrade+0x900/0x900 [ 47.367002] ? __inode_wait_for_writeback+0x2cf/0x380 [ 47.372186] destroy_inode+0xda/0x200 [ 47.375988] ? __destroy_inode+0x820/0x820 [ 47.380231] ? kasan_check_write+0x14/0x20 [ 47.384457] ? do_raw_spin_lock+0xc1/0x200 [ 47.388676] evict+0x5e0/0x980 [ 47.391852] ? destroy_inode+0x200/0x200 [ 47.395896] ? iput+0x671/0xa90 [ 47.399158] ? lock_downgrade+0x900/0x900 [ 47.403293] ? kasan_check_read+0x11/0x20 [ 47.407430] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 47.412046] ? lock_downgrade+0x900/0x900 [ 47.416190] iput+0x679/0xa90 [ 47.419285] ? inode_add_lru+0x2a0/0x2a0 [ 47.423333] ? up_write+0x7b/0x220 [ 47.426862] ? up_read+0x110/0x110 [ 47.430400] ? up_read+0x110/0x110 [ 47.433968] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.439495] ? check_preemption_disabled+0x48/0x200 [ 47.444501] ext4_ioctl+0x236f/0x4210 [ 47.448294] ? ext4_ioctl_group_add+0x560/0x560 [ 47.453059] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 47.458855] ? kasan_check_read+0x11/0x20 [ 47.462991] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 47.468250] ? rcu_bh_qs+0xc0/0xc0 [ 47.471777] ? unwind_dump+0x190/0x190 [ 47.475652] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.481192] ? avc_has_extended_perms+0xab2/0x15a0 [ 47.486145] ? convert_from_fxsr+0x4a7/0x7d0 [ 47.490541] ? avc_ss_reset+0x190/0x190 [ 47.494500] ? save_stack+0xa9/0xd0 [ 47.498109] ? save_stack+0x43/0xd0 [ 47.501728] ? __kasan_slab_free+0x102/0x150 [ 47.506125] ? kasan_slab_free+0xe/0x10 [ 47.510088] ? kmem_cache_free+0x83/0x290 [ 47.514303] ? putname+0xf2/0x130 [ 47.517767] ? do_sys_open+0x54d/0x700 [ 47.521646] ? __x64_sys_openat+0x9d/0x100 [ 47.525876] ? do_syscall_64+0x1b9/0x820 [ 47.529996] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.535361] ? ___might_sleep+0x1ed/0x300 [ 47.539559] ? arch_local_save_flags+0x40/0x40 [ 47.544134] ? kasan_check_write+0x14/0x20 [ 47.548376] ? trace_hardirqs_off+0xb8/0x310 [ 47.552781] ? ext4_ioctl_group_add+0x560/0x560 [ 47.557444] do_vfs_ioctl+0x1de/0x1720 [ 47.561320] ? ioctl_preallocate+0x300/0x300 [ 47.565726] ? selinux_file_mprotect+0x620/0x620 [ 47.570573] ? path_openat+0x3ce1/0x5160 [ 47.574626] ? rcu_read_lock_sched_held+0x108/0x120 [ 47.579632] ? kmem_cache_free+0x24f/0x290 [ 47.583917] ? putname+0xf7/0x130 [ 47.587359] ? do_syscall_64+0x9a/0x820 [ 47.591372] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.596899] ? security_file_ioctl+0x94/0xc0 [ 47.601340] ksys_ioctl+0xa9/0xd0 [ 47.604783] __x64_sys_ioctl+0x73/0xb0 [ 47.608666] do_syscall_64+0x1b9/0x820 [ 47.612601] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 47.617955] ? syscall_return_slowpath+0x5e0/0x5e0 [ 47.622875] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 47.627736] ? trace_hardirqs_on_caller+0x310/0x310 [ 47.632900] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 47.637918] ? prepare_exit_to_usermode+0x291/0x3b0 [ 47.642925] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 47.647760] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.652936] RIP: 0033:0x440029 [ 47.656159] 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 [ 47.675057] RSP: 002b:00007ffc08ea2de8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 47.682755] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440029 [ 47.690534] RDX: 0000000000440029 RSI: 0000000000006611 RDI: 0000000000000003 [ 47.697914] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 47.705181] R10: 0000000000000000 R11: 0000000000000213 R12: 00000000004018b0 [ 47.712608] R13: 0000000000401940 R14: 0000000000000000 R15: 0000000000000000 [ 47.719864] Modules linked in: [ 47.723092] ---[ end trace 44156a114d2ee559 ]--- [ 47.727853] RIP: 0010:rb_erase+0x306/0x3710 [ 47.732200] 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 [ 47.751237] RSP: 0018:ffff8801cb486918 EFLAGS: 00010202 [ 47.756591] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 47.763898] RDX: 1ffff10039690d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 47.771212] RBP: ffff8801cb487320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 47.778592] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b0ef43b0 [ 47.785999] R13: dffffc0000000000 R14: ffff8801cb4872f8 R15: ffff8801cb487438 [ 47.793297] FS: 000000000113a880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 47.801549] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.807419] CR2: 00000000200000c0 CR3: 00000001b3852000 CR4: 00000000001406e0 [ 47.814730] Kernel panic - not syncing: Fatal exception [ 47.820947] Kernel Offset: disabled [ 47.824614] Rebooting in 86400 seconds..