BTRFS info (device loop1): has skinny extents
f2fs_msg: 2 callbacks suppressed
F2FS-fs (loop2): invalid crc value
F2FS-fs (loop2): Found nat_bits in checkpoint
------------[ cut here ]------------
WARNING: CPU: 1 PID: 15413 at fs/fs-writeback.c:2370 __writeback_inodes_sb_nr.cold+0x11/0x18 fs/fs-writeback.c:2370
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 15413 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x5a kernel/panic.c:541
 report_bug+0x262/0x2b0 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__writeback_inodes_sb_nr.cold+0x11/0x18 fs/fs-writeback.c:2370
Code: e1 e8 36 ba 6d f9 48 c7 c7 c0 f9 74 88 e8 95 eb fe ff 0f 0b e9 75 12 b9 f9 e8 1e ba 6d f9 48 c7 c7 c0 f9 74 88 e8 7d eb fe ff <0f> 0b e9 c9 34 b9 f9 e8 06 ba 6d f9 48 c7 c7 c0 f9 74 88 e8 65 eb
RSP: 0018:ffff8880a9ed7710 EFLAGS: 00010286
RAX: 0000000000000024 RBX: 1ffff110153daee4 RCX: 0000000000000000
RDX: 00000000000187dc RSI: ffffffff814dff01 RDI: ffffed10153daed4
RBP: ffff888042fc4a80 R08: 0000000000000024 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000006400
R13: ffff888091d06b80 R14: ffff888042fc4bb0 R15: ffff8880a9ed7750
 btrfs_start_delalloc_flush fs/btrfs/transaction.c:1927 [inline]
 btrfs_commit_transaction+0x1bb1/0x2480 fs/btrfs/transaction.c:2078
 btrfs_alloc_data_chunk_ondemand+0x47e/0xce0 fs/btrfs/extent-tree.c:4205
 btrfs_check_data_free_space+0xc8/0x150 fs/btrfs/extent-tree.c:4245
 btrfs_buffered_write.isra.0+0x40f/0xfa0 fs/btrfs/file.c:1645
 btrfs_file_write_iter+0xd34/0x1750 fs/btrfs/file.c:1982
 call_write_iter include/linux/fs.h:1821 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x51b/0x770 fs/read_write.c:487
 vfs_write+0x1f3/0x540 fs/read_write.c:549
 ksys_write+0x12b/0x2a0 fs/read_write.c:599
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f2477c520f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f24761c4168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f2477d71f80 RCX: 00007f2477c520f9
RDX: 0000000000000078 RSI: 0000000020000240 RDI: 0000000000000005
RBP: 00007f2477cadae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffef8f7f5af R14: 00007f24761c4300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..