[ 27.722739] audit: type=1800 audit(1540215698.215:27): pid=5240 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 27.744236] audit: type=1800 audit(1540215698.225:28): pid=5240 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 28.552761] audit: type=1800 audit(1540215699.135:29): pid=5240 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 28.574618] audit: type=1800 audit(1540215699.135:30): pid=5240 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.59' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 36.520109] kasan: CONFIG_KASAN_INLINE enabled [ 36.524787] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.532204] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.538450] CPU: 0 PID: 5393 Comm: syz-executor829 Not tainted 4.19.0-rc8+ #296 [ 36.545890] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.555255] RIP: 0010:rb_erase+0x306/0x3710 [ 36.559574] 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 [ 36.578463] RSP: 0018:ffff8801c101e918 EFLAGS: 00010202 [ 36.583809] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 36.591060] RDX: 1ffff10038203d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 36.598316] RBP: ffff8801c101f320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 36.605568] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801c3c252b0 [ 36.612822] R13: dffffc0000000000 R14: ffff8801c101f2f8 R15: ffff8801c101f438 [ 36.620078] FS: 00000000017af880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 36.628287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.634153] CR2: 0000000020000080 CR3: 00000001d9011000 CR4: 00000000001406f0 [ 36.641413] Call Trace: [ 36.643998] ? lockdep_on+0x50/0x50 [ 36.647615] ? rb_insert_color+0x1460/0x1460 [ 36.652008] ? lock_downgrade+0x900/0x900 [ 36.656230] ? noop_count+0x40/0x40 [ 36.659843] ? lock_pin_lock+0x350/0x350 [ 36.663892] ? rcu_bh_qs+0xc0/0xc0 [ 36.667425] ? unwind_dump+0x190/0x190 [ 36.671317] ? kasan_check_read+0x11/0x20 [ 36.675454] ? noop_count+0x40/0x40 [ 36.679067] ? lock_pin_lock+0x350/0x350 [ 36.683115] ? mark_held_locks+0x130/0x130 [ 36.687343] ? check_usage_forwards+0x3e0/0x3e0 [ 36.691998] ? __bfs+0x385/0x7a0 [ 36.695351] ? check_usage+0x1a9/0x790 [ 36.699226] ? lock_pin_lock+0x350/0x350 [ 36.703271] ? check_usage_forwards+0x3e0/0x3e0 [ 36.707924] ? __bfs+0x385/0x7a0 [ 36.711277] ? lockdep_on+0x50/0x50 [ 36.714888] ? lock_pin_lock+0x350/0x350 [ 36.718943] ? mark_held_locks+0x130/0x130 [ 36.723180] ? kasan_check_read+0x11/0x20 [ 36.727316] ? __lock_acquire+0x2881/0x4ec0 [ 36.731627] ? mark_held_locks+0x130/0x130 [ 36.735858] ? print_usage_bug+0xc0/0xc0 [ 36.739903] ? _raw_spin_unlock+0x2c/0x50 [ 36.744042] ? graph_lock+0x170/0x170 [ 36.747831] ? ext4_exit_mballoc+0xc0/0xc0 [ 36.752056] ? __lock_acquire+0x7ec/0x4ec0 [ 36.756279] ? find_held_lock+0x36/0x1c0 [ 36.760345] ? mark_held_locks+0x130/0x130 [ 36.764567] ? lock_downgrade+0x900/0x900 [ 36.768706] ? ext4_es_scan+0x960/0x960 [ 36.772666] ? lock_release+0x970/0x970 [ 36.776632] ? do_raw_write_trylock+0x1c0/0x1c0 [ 36.781289] ? kasan_check_write+0x14/0x20 [ 36.785526] ? lock_acquire+0x1ed/0x520 [ 36.789487] ? integrity_inode_free+0x77/0x320 [ 36.794228] ? ext4_es_remove_extent+0x151/0x500 [ 36.798968] ? lock_release+0x970/0x970 [ 36.803164] ? kasan_check_write+0x14/0x20 [ 36.807425] ? do_raw_write_lock+0xbd/0x1e0 [ 36.811740] integrity_inode_free+0x12f/0x320 [ 36.816219] security_inode_free+0x19/0x90 [ 36.820454] __destroy_inode+0x328/0x820 [ 36.824504] ? generic_update_time+0x450/0x450 [ 36.829072] ? evict+0x5d8/0x980 [ 36.832426] ? lock_downgrade+0x900/0x900 [ 36.836562] ? __inode_wait_for_writeback+0x2cf/0x380 [ 36.841740] destroy_inode+0xda/0x200 [ 36.845523] ? __destroy_inode+0x820/0x820 [ 36.849760] ? kasan_check_write+0x14/0x20 [ 36.853982] ? do_raw_spin_lock+0xc1/0x230 [ 36.858202] evict+0x5e0/0x980 [ 36.861383] ? destroy_inode+0x200/0x200 [ 36.865447] ? iput+0x671/0xa90 [ 36.868711] ? lock_downgrade+0x900/0x900 [ 36.872844] ? kasan_check_read+0x11/0x20 [ 36.876990] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 36.881566] ? lock_downgrade+0x900/0x900 [ 36.885701] iput+0x679/0xa90 [ 36.888792] ? inode_add_lru+0x2a0/0x2a0 [ 36.892837] ? up_write+0x7b/0x220 [ 36.896359] ? up_read+0x110/0x110 [ 36.899880] ? up_read+0x110/0x110 [ 36.903404] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.908933] ? check_preemption_disabled+0x48/0x280 [ 36.914150] ext4_ioctl+0x236f/0x4210 [ 36.917940] ? is_bpf_text_address+0xac/0x170 [ 36.922421] ? ext4_ioctl_group_add+0x560/0x560 [ 36.927090] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 36.932876] ? kasan_check_read+0x11/0x20 [ 36.937015] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 36.942290] ? rcu_bh_qs+0xc0/0xc0 [ 36.945819] ? rcu_bh_qs+0xc0/0xc0 [ 36.949344] ? unwind_dump+0x190/0x190 [ 36.953220] ? is_bpf_text_address+0xd3/0x170 [ 36.957703] ? kernel_text_address+0x79/0xf0 [ 36.962097] ? __kernel_text_address+0xd/0x40 [ 36.966576] ? unwind_get_return_address+0x61/0xa0 [ 36.967152] kobject: 'regulatory.0' (00000000ee681590): kobject_uevent_env [ 36.971507] ? __save_stack_trace+0x8d/0xf0 [ 36.978561] kobject: 'regulatory.0' (00000000ee681590): fill_kobj_path: path = '/devices/platform/regulatory.0' [ 36.982834] ? save_stack+0xa9/0xd0 [ 36.996664] ? save_stack+0x43/0xd0 [ 37.000305] ? __kasan_slab_free+0x102/0x150 [ 37.004713] ? kasan_slab_free+0xe/0x10 [ 37.008689] ? kmem_cache_free+0x83/0x290 [ 37.012831] ? putname+0xf2/0x130 [ 37.016286] ? do_sys_open+0x54d/0x700 [ 37.020175] ? __x64_sys_openat+0x9d/0x100 [ 37.024418] ? do_syscall_64+0x1b9/0x820 [ 37.028477] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.033837] ? trace_hardirqs_off+0xb8/0x310 [ 37.038247] ? kasan_check_read+0x11/0x20 [ 37.042392] ? do_raw_spin_unlock+0xa7/0x330 [ 37.046800] ? trace_hardirqs_on+0x310/0x310 [ 37.051211] ? kasan_check_write+0x14/0x20 [ 37.055447] ? trace_hardirqs_off+0xb8/0x310 [ 37.059857] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.065394] ? check_preemption_disabled+0x48/0x280 [ 37.070418] ? check_preemption_disabled+0x48/0x280 [ 37.075439] ? ext4_ioctl_group_add+0x560/0x560 [ 37.080106] do_vfs_ioctl+0x1de/0x1720 [ 37.084005] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 37.089280] ? ioctl_preallocate+0x300/0x300 [ 37.093687] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.099224] ? __fget_light+0x2e9/0x430 [ 37.103194] ? fget_raw+0x20/0x20 [ 37.106645] ? putname+0xf2/0x130 [ 37.110096] ? rcu_read_lock_sched_held+0x108/0x120 [ 37.115112] ? kmem_cache_free+0x24f/0x290 [ 37.119357] ? putname+0xf7/0x130 [ 37.122835] ? do_syscall_64+0x9a/0x820 [ 37.126805] ? do_syscall_64+0x9a/0x820 [ 37.130776] ? lockdep_hardirqs_on+0x421/0x5c0 [ 37.135356] ? security_file_ioctl+0x94/0xc0 [ 37.139770] ksys_ioctl+0xa9/0xd0 [ 37.143225] __x64_sys_ioctl+0x73/0xb0 [ 37.147116] do_syscall_64+0x1b9/0x820 [ 37.151013] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 37.156379] ? syscall_return_slowpath+0x5e0/0x5e0 [ 37.161312] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.166160] ? trace_hardirqs_on_caller+0x310/0x310 [ 37.171176] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 37.176193] ? prepare_exit_to_usermode+0x291/0x3b0 [ 37.181212] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.186058] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.191243] RIP: 0033:0x440009 [ 37.194439] 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 [ 37.213337] RSP: 002b:00007fff85bc5f88 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 37.221041] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 37.228304] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 37.235566] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 37.242832] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 37.250099] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 37.257377] Modules linked in: [ 37.260706] ---[ end trace 057499be15191f98 ]--- [ 37.265474] RIP: 0010:rb_erase+0x306/0x3710 [ 37.269812] 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 [ 37.288731] RSP: 0018:ffff8801c101e918 EFLAGS: 00010202 [ 37.294094] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 37.301382] RDX: 1ffff10038203d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 37.308674] RBP: ffff8801c101f320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 37.315946] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801c3c252b0 [ 37.323233] R13: dffffc0000000000 R14: ffff8801c101f2f8 R15: ffff8801c101f438 [ 37.330525] FS: 00000000017af880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 37.338767] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.344642] CR2: 0000000020000080 CR3: 00000001d9011000 CR4: 00000000001406f0 [ 37.351931] Kernel panic - not syncing: Fatal exception [ 37.358116] Kernel Offset: disabled [ 37.361747] Rebooting in 86400 seconds..