[ 23.720366] audit: type=1800 audit(1540110215.844:21): pid=5169 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 23.741028] audit: type=1800 audit(1540110215.844:22): pid=5169 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[ 24.275733] rsyslog (5172) used greatest stack depth: 15976 bytes left . [....] 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 '10.128.10.47' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 58.368069] kasan: CONFIG_KASAN_INLINE enabled [ 58.372815] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 58.380290] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 58.386551] CPU: 0 PID: 5326 Comm: syz-executor335 Not tainted 4.19.0-rc8+ #270 [ 58.394111] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.403472] RIP: 0010:rb_erase+0x306/0x3710 [ 58.407794] 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 [ 58.426907] RSP: 0018:ffff8801bb176918 EFLAGS: 00010202 [ 58.432273] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 58.439545] RDX: 1ffff1003762ed2b RSI: ffffffff8afc5020 RDI: 0000000000000008 [ 58.446821] RBP: ffff8801bb177320 R08: dffffc0000000000 R09: fffffbfff12d68e0 [ 58.454086] R10: fffffbfff12d68e0 R11: ffffffff896b4703 R12: ffff8801b75f0970 [ 58.461343] R13: dffffc0000000000 R14: ffff8801bb1772f8 R15: ffff8801bb177438 [ 58.468606] FS: 0000000001ca4880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 58.476819] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.482682] CR2: 0000000020000080 CR3: 00000001c556c000 CR4: 00000000001406f0 [ 58.489937] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.497199] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.504455] Call Trace: [ 58.507076] ? lockdep_on+0x50/0x50 [ 58.510690] ? rb_insert_color+0x1460/0x1460 [ 58.515219] ? lock_downgrade+0x900/0x900 [ 58.519363] ? noop_count+0x40/0x40 [ 58.522974] ? lock_pin_lock+0x350/0x350 [ 58.527140] ? rcu_bh_qs+0xc0/0xc0 [ 58.530782] ? unwind_dump+0x190/0x190 [ 58.534667] ? kasan_check_read+0x11/0x20 [ 58.538803] ? noop_count+0x40/0x40 [ 58.542412] ? lock_pin_lock+0x350/0x350 [ 58.546468] ? mark_held_locks+0x130/0x130 [ 58.550691] ? check_usage_forwards+0x3e0/0x3e0 [ 58.555348] ? __bfs+0x385/0x7a0 [ 58.558804] ? check_usage+0x1a9/0x790 [ 58.562763] ? lock_pin_lock+0x350/0x350 [ 58.566818] ? check_usage_forwards+0x3e0/0x3e0 [ 58.571474] ? __bfs+0x385/0x7a0 [ 58.574824] ? modules_open+0xa0/0xa0 [ 58.578734] ? lockdep_on+0x50/0x50 [ 58.582353] ? lock_pin_lock+0x350/0x350 [ 58.586400] ? mark_held_locks+0x130/0x130 [ 58.590622] ? kasan_check_read+0x11/0x20 [ 58.594761] ? __lock_acquire+0x2881/0x4ec0 [ 58.599077] ? mark_held_locks+0x130/0x130 [ 58.603372] ? print_usage_bug+0xc0/0xc0 [ 58.607426] ? _raw_spin_unlock+0x2c/0x50 [ 58.611563] ? graph_lock+0x170/0x170 [ 58.615353] ? ext4_exit_mballoc+0xc0/0xc0 [ 58.619579] ? __lock_acquire+0x7ec/0x4ec0 [ 58.623804] ? find_held_lock+0x36/0x1c0 [ 58.627983] ? mark_held_locks+0x130/0x130 [ 58.632210] ? lock_downgrade+0x900/0x900 [ 58.636356] ? ext4_es_scan+0x960/0x960 [ 58.640326] ? lock_release+0x970/0x970 [ 58.644297] ? do_raw_write_trylock+0x1c0/0x1c0 [ 58.648957] ? kasan_check_write+0x14/0x20 [ 58.653174] ? lock_acquire+0x1ed/0x520 [ 58.657133] ? integrity_inode_free+0x77/0x320 [ 58.661702] ? ext4_es_remove_extent+0x151/0x500 [ 58.666443] ? lock_release+0x970/0x970 [ 58.670424] ? kasan_check_write+0x14/0x20 [ 58.674643] ? do_raw_write_lock+0xbd/0x1b0 [ 58.678951] integrity_inode_free+0x12f/0x320 [ 58.683439] security_inode_free+0x19/0x90 [ 58.687661] __destroy_inode+0x328/0x820 [ 58.691708] ? generic_update_time+0x450/0x450 [ 58.696295] ? evict+0x5d8/0x980 [ 58.699796] ? lock_downgrade+0x900/0x900 [ 58.703939] ? __inode_wait_for_writeback+0x2cf/0x380 [ 58.709122] destroy_inode+0xda/0x200 [ 58.712962] ? __destroy_inode+0x820/0x820 [ 58.717193] ? kasan_check_write+0x14/0x20 [ 58.721417] ? do_raw_spin_lock+0xc1/0x200 [ 58.725638] evict+0x5e0/0x980 [ 58.728827] ? destroy_inode+0x200/0x200 [ 58.732892] ? iput+0x671/0xa90 [ 58.736164] ? lock_downgrade+0x900/0x900 [ 58.740402] ? kasan_check_read+0x11/0x20 [ 58.744538] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 58.749120] ? lock_downgrade+0x900/0x900 [ 58.753361] iput+0x679/0xa90 [ 58.756452] ? inode_add_lru+0x2a0/0x2a0 [ 58.760519] ? up_write+0x7b/0x220 [ 58.764128] ? up_read+0x110/0x110 [ 58.767662] ? up_read+0x110/0x110 [ 58.771192] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.776824] ? check_preemption_disabled+0x48/0x200 [ 58.782007] ext4_ioctl+0x236f/0x4210 [ 58.785803] ? is_bpf_text_address+0xac/0x170 [ 58.790306] ? ext4_ioctl_group_add+0x560/0x560 [ 58.794963] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 58.800931] ? kasan_check_read+0x11/0x20 [ 58.805077] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 58.810455] ? rcu_bh_qs+0xc0/0xc0 [ 58.813994] ? rcu_bh_qs+0xc0/0xc0 [ 58.817529] ? unwind_dump+0x190/0x190 [ 58.821414] ? is_bpf_text_address+0xd3/0x170 [ 58.825899] ? kernel_text_address+0x79/0xf0 [ 58.830306] ? __kernel_text_address+0xd/0x40 [ 58.834791] ? unwind_get_return_address+0x61/0xa0 [ 58.839717] ? __save_stack_trace+0x8d/0xf0 [ 58.844039] ? save_stack+0xa9/0xd0 [ 58.847654] ? save_stack+0x43/0xd0 [ 58.851320] ? __kasan_slab_free+0x102/0x150 [ 58.855718] ? kasan_slab_free+0xe/0x10 [ 58.859675] ? kmem_cache_free+0x83/0x290 [ 58.863812] ? putname+0xf2/0x130 [ 58.867255] ? do_sys_open+0x54d/0x700 [ 58.871133] ? __x64_sys_openat+0x9d/0x100 [ 58.875456] ? do_syscall_64+0x1b9/0x820 [ 58.879507] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.884987] ? trace_hardirqs_off+0xb8/0x310 [ 58.889385] ? kasan_check_read+0x11/0x20 [ 58.893521] ? do_raw_spin_unlock+0xa7/0x2f0 [ 58.897925] ? trace_hardirqs_on+0x310/0x310 [ 58.902325] ? kasan_check_write+0x14/0x20 [ 58.906547] ? trace_hardirqs_off+0xb8/0x310 [ 58.910940] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.916465] ? check_preemption_disabled+0x48/0x200 [ 58.921468] ? check_preemption_disabled+0x48/0x200 [ 58.926474] ? ext4_ioctl_group_add+0x560/0x560 [ 58.931131] do_vfs_ioctl+0x1de/0x1720 [ 58.935039] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 58.940420] ? ioctl_preallocate+0x300/0x300 [ 58.944815] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.950339] ? __fget_light+0x2e9/0x430 [ 58.954305] ? fget_raw+0x20/0x20 [ 58.957856] ? putname+0xf2/0x130 [ 58.961399] ? rcu_read_lock_sched_held+0x108/0x120 [ 58.966402] ? kmem_cache_free+0x24f/0x290 [ 58.970620] ? putname+0xf7/0x130 [ 58.974066] ? do_syscall_64+0x9a/0x820 [ 58.978024] ? do_syscall_64+0x9a/0x820 [ 58.981980] ? lockdep_hardirqs_on+0x421/0x5c0 [ 58.986549] ? security_file_ioctl+0x94/0xc0 [ 58.990945] ksys_ioctl+0xa9/0xd0 [ 58.994384] __x64_sys_ioctl+0x73/0xb0 [ 58.998259] do_syscall_64+0x1b9/0x820 [ 59.002138] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 59.007486] ? syscall_return_slowpath+0x5e0/0x5e0 [ 59.012399] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 59.017230] ? trace_hardirqs_on_caller+0x310/0x310 [ 59.022234] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 59.027238] ? prepare_exit_to_usermode+0x291/0x3b0 [ 59.032240] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 59.037075] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.042249] RIP: 0033:0x440009 [ 59.045432] 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 [ 59.064330] RSP: 002b:00007ffdea3e58e8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 59.072028] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 59.079288] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 59.086546] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 59.093804] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 59.101066] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 59.108344] Modules linked in: [ 59.111674] ---[ end trace a88a97bce4bffc6e ]--- [ 59.116431] RIP: 0010:rb_erase+0x306/0x3710 [ 59.120809] 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 [ 59.139755] RSP: 0018:ffff8801bb176918 EFLAGS: 00010202 [ 59.145122] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 59.152438] RDX: 1ffff1003762ed2b RSI: ffffffff8afc5020 RDI: 0000000000000008 [ 59.159722] RBP: ffff8801bb177320 R08: dffffc0000000000 R09: fffffbfff12d68e0 [ 59.166982] R10: fffffbfff12d68e0 R11: ffffffff896b4703 R12: ffff8801b75f0970 [ 59.174335] R13: dffffc0000000000 R14: ffff8801bb1772f8 R15: ffff8801bb177438 [ 59.181808] FS: 0000000001ca4880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 59.190193] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.196067] CR2: 0000000020000080 CR3: 00000001c556c000 CR4: 00000000001406f0 [ 59.203455] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.210764] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.218028] Kernel panic - not syncing: Fatal exception [ 59.224213] Kernel Offset: disabled [ 59.227888] Rebooting in 86400 seconds..