netlink: 'syz-executor.0': attribute type 4 has an invalid length.
IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
------------[ cut here ]------------
generic_make_request: Trying to write to read-only block-device loop0 (partno 0)
WARNING: CPU: 0 PID: 14450 at block/blk-core.c:2183 bio_check_ro block/blk-core.c:2183 [inline]
WARNING: CPU: 0 PID: 14450 at block/blk-core.c:2183 generic_make_request_checks+0x17d9/0x22e0 block/blk-core.c:2288
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 14450 Comm: syz-executor.0 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:bio_check_ro block/blk-core.c:2183 [inline]
RIP: 0010:generic_make_request_checks+0x17d9/0x22e0 block/blk-core.c:2288
Code: ca 0a 00 00 45 8b b6 1c 05 00 00 48 8d 74 24 68 48 89 ef e8 b9 14 06 00 48 c7 c7 00 29 b2 88 48 89 c6 44 89 f2 e8 4c 94 91 04 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02
RSP: 0018:ffff88804aa56c48 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8880aee87040 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed100954ad7b
RBP: ffff8880b0a1f080 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b0a1f0b0
R13: ffff8880b0a1f088 R14: 0000000000000000 R15: 0000000000000000
 generic_make_request+0x23f/0xdf0 block/blk-core.c:2412
 submit_bio+0xb1/0x430 block/blk-core.c:2576
 submit_stripe_bio fs/btrfs/volumes.c:6157 [inline]
 btrfs_map_bio+0xa3d/0xf30 fs/btrfs/volumes.c:6246
 btree_submit_bio_hook+0x373/0x460 fs/btrfs/disk-io.c:880
 submit_one_bio+0x1f1/0x2c0 fs/btrfs/extent_io.c:155
 flush_write_bio fs/btrfs/extent_io.c:184 [inline]
 btree_write_cache_pages+0x91b/0xaf0 fs/btrfs/extent_io.c:3982
 btree_writepages+0x170/0x1c0 fs/btrfs/disk-io.c:943
 do_writepages+0xe5/0x290 mm/page-writeback.c:2344
 __filemap_fdatawrite_range+0x27d/0x350 mm/filemap.c:446
 btrfs_write_marked_extents+0x1ff/0x320 fs/btrfs/transaction.c:977
 btrfs_write_and_wait_transaction+0xd3/0x270 fs/btrfs/transaction.c:1089
 btrfs_commit_transaction+0x1418/0x2480 fs/btrfs/transaction.c:2277
 btrfs_commit_super+0xc1/0x100 fs/btrfs/disk-io.c:3932
 close_ctree+0x618/0x850 fs/btrfs/disk-io.c:3992
 generic_shutdown_super+0x144/0x370 fs/super.c:456
 kill_anon_super+0x36/0x60 fs/super.c:1032
 btrfs_kill_super+0x49/0x550 fs/btrfs/super.c:2221
 deactivate_locked_super+0x94/0x160 fs/super.c:329
 deactivate_super+0x174/0x1a0 fs/super.c:360
 cleanup_mnt+0x1a8/0x290 fs/namespace.c:1098
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xbf3/0x2be0 kernel/exit.c:870
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath+0x3f0/0x4a0 arch/x86/entry/common.c:271
 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:407
RIP: 0033:0x7f0d336aa0f9
Code: Bad RIP value.
RSP: 002b:00000000200002f0 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: 0000000000000000 RBX: 00007f0d337ca120 RCX: 00007f0d336aa0f9
RDX: 0000000020000140 RSI: 00000000200002f0 RDI: 0000000080000000
RBP: 00007f0d33705ae9 R08: 0000000020000900 R09: 0000000020000900
R10: 0000000020000300 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffff635605f R14: 00007f0d31bda300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..