[info] Using makefile-style concurrent boot in runlevel 2. [ 24.607343] audit: type=1800 audit(1537957752.527:21): pid=5194 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.637852] audit: type=1800 audit(1537957752.537:22): pid=5194 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 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 '10.128.0.39' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.829834] kasan: CONFIG_KASAN_INLINE enabled [ 33.834483] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.842038] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 33.848281] CPU: 0 PID: 5349 Comm: syz-executor274 Not tainted 4.19.0-rc5+ #255 [ 33.855709] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.865052] RIP: 0010:rb_erase+0x306/0x3710 [ 33.869353] 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 [ 33.888252] RSP: 0018:ffff8801c33ae918 EFLAGS: 00010202 [ 33.893619] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 33.900869] RDX: 1ffff10038675d2b RSI: ffffffff8b5a08a0 RDI: 0000000000000008 [ 33.908119] RBP: ffff8801c33af320 R08: dffffc0000000000 R09: fffffbfff135d5c8 [ 33.915367] R10: fffffbfff135d5c8 R11: ffffffff89aeae43 R12: ffff8801b77861f0 [ 33.922615] R13: dffffc0000000000 R14: ffff8801c33af2f8 R15: ffff8801c33af438 [ 33.929867] FS: 0000000001673880(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 33.938078] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.943937] CR2: 0000000020000080 CR3: 00000001d8e09000 CR4: 00000000001406f0 [ 33.951188] Call Trace: [ 33.953769] ? lockdep_on+0x50/0x50 [ 33.957379] ? rb_insert_color+0x1460/0x1460 [ 33.961773] ? noop_count+0x40/0x40 [ 33.965382] ? lock_pin_lock+0x350/0x350 [ 33.969424] ? noop_count+0x40/0x40 [ 33.973035] ? kasan_check_read+0x11/0x20 [ 33.977161] ? noop_count+0x40/0x40 [ 33.980771] ? noop_count+0x40/0x40 [ 33.984377] ? lock_pin_lock+0x350/0x350 [ 33.988430] ? mark_held_locks+0x130/0x130 [ 33.992651] ? check_usage_forwards+0x3e0/0x3e0 [ 33.997304] ? __bfs+0x385/0x7a0 [ 34.000650] ? noop_count+0x40/0x40 [ 34.004259] ? check_usage+0x1a9/0x790 [ 34.008136] ? lock_pin_lock+0x350/0x350 [ 34.012182] ? check_usage_forwards+0x3e0/0x3e0 [ 34.016828] ? __bfs+0x385/0x7a0 [ 34.020177] ? __lock_acquire+0x7ec/0x4ec0 [ 34.024391] ? lockdep_on+0x50/0x50 [ 34.028000] ? lock_pin_lock+0x350/0x350 [ 34.032050] ? mark_held_locks+0x130/0x130 [ 34.036270] ? kasan_check_read+0x11/0x20 [ 34.040403] ? __lock_acquire+0x2881/0x4ec0 [ 34.044707] ? mark_held_locks+0x130/0x130 [ 34.048922] ? print_usage_bug+0xc0/0xc0 [ 34.052969] ? _raw_spin_unlock+0x2c/0x50 [ 34.057103] ? graph_lock+0x170/0x170 [ 34.060886] ? ext4_exit_mballoc+0xc0/0xc0 [ 34.065100] ? __lock_acquire+0x7ec/0x4ec0 [ 34.069317] ? find_held_lock+0x36/0x1c0 [ 34.073363] ? mark_held_locks+0x130/0x130 [ 34.077576] ? lock_downgrade+0x900/0x900 [ 34.081706] ? ext4_es_scan+0x960/0x960 [ 34.085679] ? do_raw_write_trylock+0x1c0/0x1c0 [ 34.090330] ? kasan_check_write+0x14/0x20 [ 34.094547] ? lock_acquire+0x1ed/0x520 [ 34.098506] ? integrity_inode_free+0x77/0x320 [ 34.103067] ? ext4_es_remove_extent+0x151/0x500 [ 34.107808] ? lock_release+0x970/0x970 [ 34.111766] ? kasan_check_write+0x14/0x20 [ 34.115978] ? do_raw_write_lock+0xbd/0x1b0 [ 34.120286] integrity_inode_free+0x12f/0x320 [ 34.124774] security_inode_free+0x19/0x90 [ 34.128997] __destroy_inode+0x328/0x820 [ 34.133040] ? generic_update_time+0x450/0x450 [ 34.137604] ? evict+0x5d8/0x980 [ 34.140955] ? lock_downgrade+0x900/0x900 [ 34.145086] ? __inode_wait_for_writeback+0x2cf/0x380 [ 34.150260] destroy_inode+0xda/0x200 [ 34.154047] ? __destroy_inode+0x820/0x820 [ 34.158272] ? kasan_check_write+0x14/0x20 [ 34.162493] ? do_raw_spin_lock+0xc1/0x200 [ 34.166710] evict+0x5e0/0x980 [ 34.169885] ? destroy_inode+0x200/0x200 [ 34.173926] ? iput+0x671/0xa90 [ 34.177184] ? lock_downgrade+0x900/0x900 [ 34.181315] ? kasan_check_read+0x11/0x20 [ 34.185447] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 34.190011] ? lock_downgrade+0x900/0x900 [ 34.194146] iput+0x679/0xa90 [ 34.197244] ? inode_add_lru+0x2a0/0x2a0 [ 34.201298] ? up_write+0x7b/0x220 [ 34.204820] ? up_read+0x110/0x110 [ 34.208348] ? up_read+0x110/0x110 [ 34.211885] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.217404] ? check_preemption_disabled+0x48/0x200 [ 34.222407] ext4_ioctl+0x236f/0x4210 [ 34.226209] ? is_bpf_text_address+0xac/0x170 [ 34.230686] ? ext4_ioctl_group_add+0x560/0x560 [ 34.235367] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 34.241258] ? kasan_check_read+0x11/0x20 [ 34.245396] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 34.250657] ? rcu_bh_qs+0xc0/0xc0 [ 34.254178] ? rcu_bh_qs+0xc0/0xc0 [ 34.257707] ? unwind_dump+0x190/0x190 [ 34.261589] ? is_bpf_text_address+0xd3/0x170 [ 34.266065] ? kernel_text_address+0x79/0xf0 [ 34.270457] ? __kernel_text_address+0xd/0x40 [ 34.274933] ? unwind_get_return_address+0x61/0xa0 [ 34.279849] ? __save_stack_trace+0x8d/0xf0 [ 34.284160] ? save_stack+0xa9/0xd0 [ 34.287766] ? save_stack+0x43/0xd0 [ 34.291373] ? __kasan_slab_free+0x102/0x150 [ 34.295760] ? kasan_slab_free+0xe/0x10 [ 34.299714] ? kmem_cache_free+0x83/0x290 [ 34.303839] ? putname+0xf2/0x130 [ 34.307279] ? do_sys_open+0x54d/0x700 [ 34.311175] ? __x64_sys_openat+0x9d/0x100 [ 34.315401] ? do_syscall_64+0x1b9/0x820 [ 34.319450] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.324800] ? trace_hardirqs_off+0xb8/0x310 [ 34.329187] ? kasan_check_read+0x11/0x20 [ 34.333332] ? do_raw_spin_unlock+0xa7/0x2f0 [ 34.337747] ? trace_hardirqs_on+0x310/0x310 [ 34.342135] ? kasan_check_write+0x14/0x20 [ 34.346354] ? trace_hardirqs_off+0xb8/0x310 [ 34.350745] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.356270] ? check_preemption_disabled+0x48/0x200 [ 34.361279] ? check_preemption_disabled+0x48/0x200 [ 34.366287] ? ext4_ioctl_group_add+0x560/0x560 [ 34.370942] do_vfs_ioctl+0x1de/0x1720 [ 34.374816] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 34.380080] ? ioctl_preallocate+0x300/0x300 [ 34.384472] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.390004] ? __fget_light+0x2e9/0x430 [ 34.393956] ? fget_raw+0x20/0x20 [ 34.397391] ? putname+0xf2/0x130 [ 34.400828] ? rcu_read_lock_sched_held+0x108/0x120 [ 34.405826] ? kmem_cache_free+0x24f/0x290 [ 34.410045] ? putname+0xf7/0x130 [ 34.413483] ? do_syscall_64+0x9a/0x820 [ 34.417448] ? do_syscall_64+0x9a/0x820 [ 34.421404] ? lockdep_hardirqs_on+0x421/0x5c0 [ 34.425971] ? security_file_ioctl+0x94/0xc0 [ 34.430363] ksys_ioctl+0xa9/0xd0 [ 34.433800] __x64_sys_ioctl+0x73/0xb0 [ 34.437670] do_syscall_64+0x1b9/0x820 [ 34.441555] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 34.446902] ? syscall_return_slowpath+0x5e0/0x5e0 [ 34.451812] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.456641] ? trace_hardirqs_on_caller+0x310/0x310 [ 34.461640] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 34.466637] ? prepare_exit_to_usermode+0x291/0x3b0 [ 34.471636] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.476476] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.481647] RIP: 0033:0x440009 [ 34.484824] 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 [ 34.503712] RSP: 002b:00007fff9eb6bf38 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 34.511402] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 34.518653] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 34.525923] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 34.533185] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 34.540523] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 34.547776] Modules linked in: [ 34.551011] ---[ end trace 5d423154905be012 ]--- [ 34.555771] RIP: 0010:rb_erase+0x306/0x3710 [ 34.560131] 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 [ 34.579059] RSP: 0018:ffff8801c33ae918 EFLAGS: 00010202 [ 34.584414] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 34.591702] RDX: 1ffff10038675d2b RSI: ffffffff8b5a08a0 RDI: 0000000000000008 [ 34.598998] RBP: ffff8801c33af320 R08: dffffc0000000000 R09: fffffbfff135d5c8 [ 34.606273] R10: fffffbfff135d5c8 R11: ffffffff89aeae43 R12: ffff8801b77861f0 [ 34.613578] R13: dffffc0000000000 R14: ffff8801c33af2f8 R15: ffff8801c33af438 [ 34.620869] FS: 0000000001673880(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 34.629109] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.634987] CR2: 0000000020000080 CR3: 00000001d8e09000 CR4: 00000000001406f0 [ 34.642283] Kernel panic - not syncing: Fatal exception [ 34.648472] Kernel Offset: disabled [ 34.652092] Rebooting in 86400 seconds..