------------[ cut here ]------------
Trying to write to read-only block-device nullb0 (partno 0)
WARNING: CPU: 1 PID: 546 at block/blk-core.c:590 bio_check_ro block/blk-core.c:590 [inline]
WARNING: CPU: 1 PID: 546 at block/blk-core.c:590 submit_bio_checks+0x1700/0x1bf0 block/blk-core.c:703
Modules linked in:
CPU: 1 PID: 546 Comm: syz-executor.1 Not tainted 5.17.0-rc4-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:bio_check_ro block/blk-core.c:590 [inline]
RIP: 0010:submit_bio_checks+0x1700/0x1bf0 block/blk-core.c:703
Code: 00 00 45 0f b6 a4 24 50 05 00 00 48 8d 74 24 60 48 89 ef e8 52 46 fe ff 48 c7 c7 80 31 04 8a 48 89 c6 44 89 e2 e8 00 24 40 05 <0f> 0b e9 a0 f3 ff ff e8 d4 34 af fd e8 5f 2a 84 05 31 ff 89 c3 89
RSP: 0018:ffffc900062df0f0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff888042710b68 RCX: 0000000000000000
RDX: ffff88805bde3a00 RSI: ffffffff815ffd78 RDI: fffff52000c5be10
RBP: ffff8880759da500 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff815fa40e R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880759da510 R14: ffff888019c55c00 R15: ffff888042710dfc
FS:  0000000000000000(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000000b162b8 CR3: 0000000017746000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __submit_bio+0xaf/0x360 block/blk-core.c:802
 __submit_bio_noacct_mq block/blk-core.c:881 [inline]
 submit_bio_noacct block/blk-core.c:907 [inline]
 submit_bio_noacct+0x6c9/0x8a0 block/blk-core.c:896
 submit_bio block/blk-core.c:968 [inline]
 submit_bio+0x1ea/0x430 block/blk-core.c:926
 submit_bh_wbc+0x5e8/0x7e0 fs/buffer.c:3055
 __block_write_full_page+0x8bb/0x13a0 fs/buffer.c:1809
 block_write_full_page+0x14d/0x190 fs/buffer.c:2981
 __writepage+0x60/0x180 mm/page-writeback.c:2320
 write_cache_pages+0x6f4/0x10c0 mm/page-writeback.c:2255
 generic_writepages mm/page-writeback.c:2346 [inline]
 generic_writepages+0xe2/0x150 mm/page-writeback.c:2335
 do_writepages+0x1ab/0x690 mm/page-writeback.c:2364
 filemap_fdatawrite_wbc mm/filemap.c:384 [inline]
 filemap_fdatawrite_wbc+0x143/0x1b0 mm/filemap.c:374
 __filemap_fdatawrite_range mm/filemap.c:417 [inline]
 filemap_write_and_wait_range mm/filemap.c:669 [inline]
 filemap_write_and_wait_range+0xe1/0x1a0 mm/filemap.c:663
 filemap_write_and_wait include/linux/fs.h:2794 [inline]
 sync_blockdev block/bdev.c:199 [inline]
 sync_blockdev block/bdev.c:195 [inline]
 blkdev_put+0x473/0x950 block/bdev.c:900
 blkdev_close+0x6a/0x80 block/fops.c:515
 __fput+0x286/0x9f0 fs/file_table.c:313
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xb29/0x2a30 kernel/exit.c:806
 do_group_exit+0xd2/0x2f0 kernel/exit.c:935
 get_signal+0x45a/0x2490 kernel/signal.c:2863
 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
 exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
 __do_fast_syscall_32+0x72/0xf0 arch/x86/entry/common.c:181
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6f1d549
Code: Unable to access opcode bytes at RIP 0xf6f1d51f.
RSP: 002b:00000000f58f667c EFLAGS: 00000296 ORIG_RAX: 00000000000000f0
RAX: fffffffffffffe00 RBX: 00000000f707a030 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000f707a034
RBP: 0000000000000081 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>