------------[ cut here ]------------
generic_make_request: Trying to write to read-only block-device loop7 (partno 0)
WARNING: CPU: 1 PID: 9699 at block/blk-core.c:2183 bio_check_ro block/blk-core.c:2183 [inline]
WARNING: CPU: 1 PID: 9699 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: 1 PID: 9699 Comm: syz-executor223 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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:ffff88809587f0b0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8880aef97080 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012b0fe08
RBP: ffff8880a23d9b80 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880a23d9bb0
R13: ffff8880a23d9b88 R14: 0000000000000000 R15: 0000000000000000
 generic_make_request+0x23f/0xdf0 block/blk-core.c:2412
 submit_bio+0xb1/0x430 block/blk-core.c:2576
 submit_bh_wbc+0x5a7/0x760 fs/buffer.c:3090
 __block_write_full_page+0x71a/0xf60 fs/buffer.c:1777
 block_write_full_page+0x1f3/0x260 fs/buffer.c:2951
 __writepage+0x5e/0xe0 mm/page-writeback.c:2305
 write_cache_pages+0x802/0x12d0 mm/page-writeback.c:2240
 generic_writepages mm/page-writeback.c:2329 [inline]
 generic_writepages+0xdb/0x150 mm/page-writeback.c:2318
 do_writepages+0xe5/0x290 mm/page-writeback.c:2344
 __filemap_fdatawrite_range+0x27d/0x350 mm/filemap.c:446
 __filemap_fdatawrite mm/filemap.c:454 [inline]
 filemap_fdatawrite mm/filemap.c:459 [inline]
 filemap_write_and_wait mm/filemap.c:640 [inline]
 filemap_write_and_wait+0x42/0xd0 mm/filemap.c:635
 __sync_blockdev fs/block_dev.c:463 [inline]
 sync_blockdev fs/block_dev.c:472 [inline]
 __blkdev_put+0x682/0x870 fs/block_dev.c:1804
 blkdev_close+0x86/0xb0 fs/block_dev.c:1888
 __fput+0x2ce/0x890 fs/file_table.c:278
 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 arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fd8018b12a9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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:00007fd80185e2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fd801934420 RCX: 00007fd8018b12a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd801934428
RBP: 00007fd80193442c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd801902074
R13: 6f6f6c2f7665642f R14: 658cceafaa0c7965 R15: 00007fd801934428
Kernel Offset: disabled
Rebooting in 86400 seconds..