[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.34' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.664698] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 [ 35.679648] BTRFS info (device loop0): enabling inode map caching [ 35.688016] BTRFS warning (device loop0): excessive commit interval 622039222 [ 35.701076] BTRFS info (device loop0): force zlib compression, level 3 [ 35.708057] BTRFS info (device loop0): using free space tree [ 35.713913] BTRFS info (device loop0): has skinny extents [ 35.753812] audit: type=1800 audit(1674416071.103:2): pid=8104 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor311" name="bus" dev="loop0" ino=263 res=0 [ 35.928582] FAULT_INJECTION: forcing a failure. [ 35.928582] name failslab, interval 1, probability 0, space 0, times 1 [ 35.940015] CPU: 0 PID: 8104 Comm: syz-executor311 Not tainted 4.19.211-syzkaller #0 [ 35.947891] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 35.957237] Call Trace: [ 35.959816] dump_stack+0x1fc/0x2ef [ 35.963428] should_fail.cold+0xa/0xf [ 35.967219] ? setup_fault_attr+0x200/0x200 [ 35.971534] __should_failslab+0x115/0x180 [ 35.975754] should_failslab+0x5/0x10 [ 35.979537] kmem_cache_alloc+0x277/0x370 [ 35.983672] __btrfs_free_extent.isra.0+0x1ba/0x1450 [ 35.988759] ? mark_held_locks+0xf0/0xf0 [ 35.992809] ? btrfs_alloc_logged_file_extent+0x470/0x470 [ 35.998329] ? lock_downgrade+0x720/0x720 [ 36.002473] ? btrfs_merge_delayed_refs+0x157/0xda0 [ 36.007480] ? __btrfs_run_delayed_refs+0x4b0/0x3de0 [ 36.012577] ? lock_downgrade+0x720/0x720 [ 36.016712] ? lock_acquire+0x168/0x3c0 [ 36.020670] ? check_preemption_disabled+0x41/0x280 [ 36.025676] __btrfs_run_delayed_refs+0x172b/0x3de0 [ 36.030682] ? do_syscall_64+0xf9/0x620 [ 36.034741] ? __btrfs_free_extent.isra.0+0x1450/0x1450 [ 36.040104] ? mark_held_locks+0xf0/0xf0 [ 36.044175] ? lock_downgrade+0x720/0x720 [ 36.048313] ? btrfs_wait_ordered_roots+0xb5/0x7d0 [ 36.053316] btrfs_run_delayed_refs.part.0+0x9a/0x310 [ 36.058494] btrfs_run_delayed_refs+0xad/0xf0 [ 36.063000] btrfs_commit_transaction+0x173/0x2480 [ 36.067913] ? _raw_spin_unlock+0x29/0x40 [ 36.072042] ? join_transaction+0x1b7/0xe20 [ 36.076345] ? btrfs_apply_pending_changes+0x150/0x150 [ 36.081601] ? start_transaction+0x239/0xf90 [ 36.085998] btrfs_sync_fs+0x120/0x490 [ 36.089868] ? btrfs_freeze+0xc0/0xc0 [ 36.093656] sync_fs_one_sb+0xbe/0xf0 [ 36.097553] iterate_supers+0x13c/0x290 [ 36.101518] ? vfs_fsync_range+0x220/0x220 [ 36.105732] ksys_sync+0xa8/0x150 [ 36.109168] ? vfs_fsync+0x1f0/0x1f0 [ 36.112868] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 36.118213] ? trace_hardirqs_off_caller+0x6e/0x210 [ 36.123213] ? do_syscall_64+0x21/0x620 [ 36.127169] __ia32_sys_sync+0xa/0x10 [ 36.130950] do_syscall_64+0xf9/0x620 [ 36.134750] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.139929] RIP: 0033:0x7f995a525559 [ 36.143646] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 14 00 00 90 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 36.162547] RSP: 002b:00007ffd6ecd2b98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 [ 36.170238] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f995a525559 [ 36.177493] RDX: 0000000000000bb0 RSI: 000000000000c0c2 RDI: 00007ffd6ecd2bb0 [ 36.184744] RBP: 00007ffd6ecd2bb0 R08: 0000000000000001 R09: 000000000000000d [ 36.191994] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 36.199245] R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000 [ 36.206868] ------------[ cut here ]------------ [ 36.212072] WARNING: CPU: 0 PID: 8104 at fs/btrfs/extent-tree.c:2938 btrfs_run_delayed_refs.part.0+0x2b7/0x310 [ 36.222216] Kernel panic - not syncing: panic_on_warn set ... [ 36.222216] [ 36.229579] CPU: 0 PID: 8104 Comm: syz-executor311 Not tainted 4.19.211-syzkaller #0 [ 36.237460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 36.246795] Call Trace: [ 36.249369] dump_stack+0x1fc/0x2ef [ 36.252980] panic+0x26a/0x50e [ 36.256158] ? __warn_printk+0xf3/0xf3 [ 36.260034] ? btrfs_run_delayed_refs.part.0+0x2b7/0x310 [ 36.265498] ? __probe_kernel_read+0x130/0x1b0 [ 36.270084] ? __warn.cold+0x5/0x5a [ 36.273694] ? __warn+0xe4/0x200 [ 36.277060] ? btrfs_run_delayed_refs.part.0+0x2b7/0x310 [ 36.282495] __warn.cold+0x20/0x5a [ 36.286025] ? btrfs_run_delayed_refs.part.0+0x2b7/0x310 [ 36.291481] report_bug+0x262/0x2b0 [ 36.295094] do_error_trap+0x1d7/0x310 [ 36.298962] ? math_error+0x310/0x310 [ 36.302747] ? irq_work_claim+0xa6/0xc0 [ 36.306725] ? irq_work_queue+0x29/0x80 [ 36.310681] ? error_entry+0x72/0xd0 [ 36.314377] ? trace_hardirqs_off_caller+0x6e/0x210 [ 36.319375] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.324204] invalid_op+0x14/0x20 [ 36.327648] RIP: 0010:btrfs_run_delayed_refs.part.0+0x2b7/0x310 [ 36.333696] Code: 89 e6 bf fb ff ff ff e8 37 f1 7e fe 41 83 fc fb 0f 84 e7 8a 16 05 e8 b8 ef 7e fe 44 89 e6 48 c7 c7 40 23 a4 88 e8 8e 27 0f 05 <0f> 0b e8 a2 ef 7e fe 44 89 e1 ba 7a 0b 00 00 48 89 ef 48 c7 c6 80 [ 36.352601] RSP: 0018:ffff888094c0fc40 EFLAGS: 00010282 [ 36.357949] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 36.365215] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012981f7a [ 36.372470] RBP: ffff88808ac0a690 R08: 0000000000000001 R09: 0000000000000000 [ 36.379722] R10: 0000000000000005 R11: 0000000000000000 R12: 00000000fffffff4 [ 36.386974] R13: ffff88808ac0a6e0 R14: ffff8880b24d6dc0 R15: 0000000000000018 [ 36.394254] ? vprintk_func+0x81/0x180 [ 36.398152] btrfs_run_delayed_refs+0xad/0xf0 [ 36.402649] btrfs_commit_transaction+0x173/0x2480 [ 36.407568] ? _raw_spin_unlock+0x29/0x40 [ 36.411702] ? join_transaction+0x1b7/0xe20 [ 36.416018] ? btrfs_apply_pending_changes+0x150/0x150 [ 36.421277] ? start_transaction+0x239/0xf90 [ 36.425681] btrfs_sync_fs+0x120/0x490 [ 36.429569] ? btrfs_freeze+0xc0/0xc0 [ 36.433354] sync_fs_one_sb+0xbe/0xf0 [ 36.437140] iterate_supers+0x13c/0x290 [ 36.441098] ? vfs_fsync_range+0x220/0x220 [ 36.445317] ksys_sync+0xa8/0x150 [ 36.448753] ? vfs_fsync+0x1f0/0x1f0 [ 36.452449] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 36.457799] ? trace_hardirqs_off_caller+0x6e/0x210 [ 36.462800] ? do_syscall_64+0x21/0x620 [ 36.466778] __ia32_sys_sync+0xa/0x10 [ 36.470563] do_syscall_64+0xf9/0x620 [ 36.474350] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.479520] RIP: 0033:0x7f995a525559 [ 36.483213] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 14 00 00 90 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 36.502093] RSP: 002b:00007ffd6ecd2b98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 [ 36.509781] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f995a525559 [ 36.517038] RDX: 0000000000000bb0 RSI: 000000000000c0c2 RDI: 00007ffd6ecd2bb0 [ 36.524288] RBP: 00007ffd6ecd2bb0 R08: 0000000000000001 R09: 000000000000000d [ 36.531545] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 36.538800] R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000 [ 36.546347] Kernel Offset: disabled [ 36.550022] Rebooting in 86400 seconds..