[ 36.450366] audit: type=1800 audit(1538561692.837:21): pid=5925 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 36.477287] audit: type=1800 audit(1538561692.847:22): pid=5925 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [ 36.512522] audit: type=1800 audit(1538561692.847:23): pid=5925 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rsyslog" dev="sda1" ino=2442 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.47' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.992334] kasan: CONFIG_KASAN_INLINE enabled [ 49.996956] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 50.004365] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 50.010609] CPU: 1 PID: 6078 Comm: syz-executor535 Not tainted 4.19.0-rc6-next-20181002+ #85 [ 50.019197] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.028594] RIP: 0010:rb_erase+0x306/0x3710 [ 50.032945] 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 [ 50.051867] RSP: 0018:ffff8801bc386918 EFLAGS: 00010202 [ 50.057263] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 50.064543] RDX: 1ffff10037870d2b RSI: ffffffff8afa7b00 RDI: 0000000000000008 [ 50.071829] RBP: ffff8801bc387320 R08: dffffc0000000000 R09: fffffbfff12d6f84 [ 50.079117] R10: fffffbfff12d6f84 R11: ffffffff896b7c23 R12: ffff8801b93721f0 [ 50.086378] R13: dffffc0000000000 R14: ffff8801bc3872f8 R15: ffff8801bc387438 [ 50.093636] FS: 00000000006f3880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 50.101853] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.107723] CR2: 0000000020000080 CR3: 00000001bbcaf000 CR4: 00000000001406e0 [ 50.114979] Call Trace: [ 50.117563] ? rb_insert_color+0x1460/0x1460 [ 50.121964] ? is_bpf_text_address+0xac/0x170 [ 50.126472] ? lock_downgrade+0x900/0x900 [ 50.130626] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 50.135562] ? mark_held_locks+0x130/0x130 [ 50.139782] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 50.145046] ? rcu_softirq_qs+0x20/0x20 [ 50.149008] ? unwind_dump+0x190/0x190 [ 50.152886] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 50.158414] ? mark_page_accessed+0xcaf/0x2040 [ 50.162992] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 50.168548] ? activate_page+0x1040/0x1040 [ 50.172780] ? mark_held_locks+0x130/0x130 [ 50.177004] ? unwind_get_return_address+0x61/0xa0 [ 50.181923] ? __save_stack_trace+0x8d/0xf0 [ 50.186241] ? pagecache_get_page+0x2d8/0xf00 [ 50.190725] ? process_measurement+0x15c4/0x1bf0 [ 50.195463] ? ima_file_check+0xe5/0x130 [ 50.199526] ? find_get_pages_contig+0x18d0/0x18d0 [ 50.204445] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 50.209450] ? bpf_prog_kallsyms_find+0xde/0x4a0 [ 50.214194] ? is_bpf_text_address+0xac/0x170 [ 50.218679] ? lock_downgrade+0x900/0x900 [ 50.222819] ? mark_held_locks+0x130/0x130 [ 50.227041] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 50.231958] ? mark_held_locks+0x130/0x130 [ 50.236183] ? ext4_discard_preallocations+0x9b4/0x13b0 [ 50.241548] ? lock_downgrade+0x900/0x900 [ 50.245710] ? kasan_check_read+0x11/0x20 [ 50.249851] ? do_raw_spin_unlock+0xa7/0x2f0 [ 50.254247] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 50.258820] ? mark_held_locks+0x130/0x130 [ 50.263046] ? _raw_spin_unlock+0x2c/0x50 [ 50.267182] ? ext4_discard_preallocations+0x18a/0x13b0 [ 50.272552] ? __getblk_gfp+0x102/0x1030 [ 50.276602] ? ext4_exit_mballoc+0xc0/0xc0 [ 50.280844] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 50.285851] ? bpf_prog_kallsyms_find+0xde/0x4a0 [ 50.290593] ? modules_open+0xa0/0xa0 [ 50.294383] ? __es_tree_search.isra.12+0x1ba/0x220 [ 50.299387] ? __es_remove_extent+0x9a3/0xba0 [ 50.303875] ? mark_held_locks+0x130/0x130 [ 50.308096] ? lock_downgrade+0x900/0x900 [ 50.312238] ? ext4_es_scan+0x950/0x950 [ 50.316199] ? lock_release+0x970/0x970 [ 50.320162] ? trace_hardirqs_on+0xbd/0x310 [ 50.324487] ? kasan_check_read+0x11/0x20 [ 50.328625] ? clear_inode+0x114/0x3a0 [ 50.332501] ? do_raw_write_trylock+0x1c0/0x1c0 [ 50.337158] ? kasan_check_write+0x14/0x20 [ 50.341394] ? lock_acquire+0x1ed/0x520 [ 50.345368] ? integrity_inode_free+0x77/0x320 [ 50.349937] ? ext4_es_remove_extent+0x14c/0x4f0 [ 50.354678] ? lock_release+0x970/0x970 [ 50.358644] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 50.363735] ? depot_save_stack+0x292/0x470 [ 50.368047] ? kasan_check_write+0x14/0x20 [ 50.372283] ? do_raw_write_lock+0xbd/0x1b0 [ 50.376594] integrity_inode_free+0x12f/0x320 [ 50.381081] security_inode_free+0x19/0x90 [ 50.385305] __destroy_inode+0x328/0x820 [ 50.389354] ? generic_update_time+0x450/0x450 [ 50.393941] ? evict+0x5d8/0x980 [ 50.397298] ? lock_downgrade+0x900/0x900 [ 50.401434] ? __inode_wait_for_writeback+0x2cf/0x380 [ 50.406641] destroy_inode+0xda/0x200 [ 50.410445] ? __destroy_inode+0x820/0x820 [ 50.414671] ? kasan_check_write+0x14/0x20 [ 50.418913] ? do_raw_spin_lock+0xc1/0x200 [ 50.423139] evict+0x5e0/0x980 [ 50.426324] ? jbd2_journal_stop+0x430/0x15c0 [ 50.430807] ? destroy_inode+0x200/0x200 [ 50.434856] ? do_raw_spin_lock+0xc1/0x200 [ 50.439075] ? iput+0x66c/0xa90 [ 50.442342] ? lock_downgrade+0x900/0x900 [ 50.446479] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 50.452006] ? kasan_check_read+0x11/0x20 [ 50.456137] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 50.460711] ? lock_downgrade+0x900/0x900 [ 50.464851] ? ext4_ioctl+0x2316/0x4210 [ 50.468815] iput+0x674/0xa90 [ 50.471912] ? inode_add_lru+0x2a0/0x2a0 [ 50.475961] ? up_write+0x7b/0x220 [ 50.479482] ? down_write_nested+0x130/0x130 [ 50.483882] ? down_write_nested+0x130/0x130 [ 50.488297] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.493931] ? check_preemption_disabled+0x48/0x200 [ 50.499030] ext4_ioctl+0x236a/0x4210 [ 50.502821] ? is_bpf_text_address+0xac/0x170 [ 50.507302] ? ext4_ioctl_group_add+0x560/0x560 [ 50.511977] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 50.516896] ? kasan_check_read+0x11/0x20 [ 50.521032] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 50.526293] ? rcu_softirq_qs+0x20/0x20 [ 50.530254] ? unwind_dump+0x190/0x190 [ 50.534128] ? is_bpf_text_address+0xd3/0x170 [ 50.538612] ? kernel_text_address+0x79/0xf0 [ 50.543009] ? __kernel_text_address+0xd/0x40 [ 50.547490] ? unwind_get_return_address+0x61/0xa0 [ 50.552408] ? __save_stack_trace+0x8d/0xf0 [ 50.556726] ? save_stack+0xa9/0xd0 [ 50.560338] ? save_stack+0x43/0xd0 [ 50.563952] ? __kasan_slab_free+0x102/0x150 [ 50.568361] ? kasan_slab_free+0xe/0x10 [ 50.572467] ? kmem_cache_free+0x83/0x290 [ 50.576604] ? putname+0xf2/0x130 [ 50.580041] ? do_sys_open+0x54d/0x700 [ 50.583913] ? __x64_sys_openat+0x9d/0x100 [ 50.588134] ? do_syscall_64+0x1b9/0x820 [ 50.592201] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.597566] ? trace_hardirqs_off+0xb8/0x310 [ 50.601976] ? kasan_check_read+0x11/0x20 [ 50.606127] ? do_raw_spin_unlock+0xa7/0x2f0 [ 50.610522] ? trace_hardirqs_on+0x310/0x310 [ 50.614918] ? kasan_check_write+0x14/0x20 [ 50.619157] ? trace_hardirqs_off+0xb8/0x310 [ 50.623554] ? trace_hardirqs_on+0x310/0x310 [ 50.627946] ? ext4_ioctl_group_add+0x560/0x560 [ 50.632599] do_vfs_ioctl+0x1de/0x1720 [ 50.636472] ? trace_hardirqs_on+0xbd/0x310 [ 50.640777] ? ioctl_preallocate+0x300/0x300 [ 50.645292] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.650817] ? __fget_light+0x2e9/0x430 [ 50.654777] ? fget_raw+0x20/0x20 [ 50.658219] ? putname+0xf2/0x130 [ 50.661674] ? kmem_cache_free+0x21a/0x290 [ 50.665922] ? putname+0xf7/0x130 [ 50.669391] ? security_file_ioctl+0x94/0xc0 [ 50.673786] ksys_ioctl+0xa9/0xd0 [ 50.677228] __x64_sys_ioctl+0x73/0xb0 [ 50.681102] do_syscall_64+0x1b9/0x820 [ 50.684977] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 50.690329] ? syscall_return_slowpath+0x5e0/0x5e0 [ 50.695248] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.700081] ? trace_hardirqs_on_caller+0x310/0x310 [ 50.705085] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 50.710085] ? prepare_exit_to_usermode+0x291/0x3b0 [ 50.715091] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.719923] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.725099] RIP: 0033:0x4400d9 [ 50.728280] 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 [ 50.747171] RSP: 002b:00007ffd63e008b8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 50.754885] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400d9 [ 50.762140] RDX: 0000000020000040 RSI: 0000000000006611 RDI: 0000000000000003 [ 50.769393] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 50.776649] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401960 [ 50.783903] R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000 [ 50.791162] Modules linked in: [ 50.794493] ---[ end trace df48bbe4d18b8f93 ]--- [ 50.799276] RIP: 0010:rb_erase+0x306/0x3710 [ 50.803632] 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 [ 50.822571] RSP: 0018:ffff8801bc386918 EFLAGS: 00010202 [ 50.828050] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 50.835342] RDX: 1ffff10037870d2b RSI: ffffffff8afa7b00 RDI: 0000000000000008 [ 50.842632] RBP: ffff8801bc387320 R08: dffffc0000000000 R09: fffffbfff12d6f84 [ 50.849891] R10: fffffbfff12d6f84 R11: ffffffff896b7c23 R12: ffff8801b93721f0 [ 50.857187] R13: dffffc0000000000 R14: ffff8801bc3872f8 R15: ffff8801bc387438 [ 50.864499] FS: 00000000006f3880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 50.872755] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.878637] CR2: 0000000020000080 CR3: 00000001bbcaf000 CR4: 00000000001406e0 [ 50.886038] Kernel panic - not syncing: Fatal exception [ 50.892490] Kernel Offset: disabled [ 50.896115] Rebooting in 86400 seconds..