------------[ cut here ]------------
Trying to write to read-only block-device nullb0 (partno 0)
WARNING: CPU: 1 PID: 12596 at block/blk-core.c:584 bio_check_ro block/blk-core.c:584 [inline]
WARNING: CPU: 1 PID: 12596 at block/blk-core.c:584 submit_bio_checks+0x1700/0x1bf0 block/blk-core.c:697
Modules linked in:
CPU: 1 PID: 12596 Comm: syz-executor.3 Not tainted 5.17.0-rc7-syzkaller-00205-g79b00034e9dc #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:584 [inline]
RIP: 0010:submit_bio_checks+0x1700/0x1bf0 block/blk-core.c:697
Code: 00 00 45 0f b6 a4 24 50 05 00 00 48 8d 74 24 60 48 89 ef e8 f2 4a fe ff 48 c7 c7 00 b1 03 8a 48 89 c6 44 89 e2 e8 18 97 3f 05 <0f> 0b e9 a0 f3 ff ff e8 14 a4 af fd e8 6f c3 83 05 31 ff 89 c3 89
RSP: 0018:ffffc900213cf110 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888013f550e8 RCX: 0000000000000000
RDX: ffff888011a1a180 RSI: ffffffff815f25f8 RDI: fffff52004279e14
RBP: ffff888013d892c0 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff815ecc8e R11: 0000000000000000 R12: 0000000000000000
R13: ffff888013d892d0 R14: ffff88804495f140 R15: ffff888013f5537c
FS:  0000000000000000(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555d5c848 CR3: 000000006c238000 CR4: 0000000000150ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __submit_bio+0xaf/0x360 block/blk-core.c:796
 __submit_bio_noacct_mq block/blk-core.c:875 [inline]
 submit_bio_noacct block/blk-core.c:901 [inline]
 submit_bio_noacct+0x6c9/0x8a0 block/blk-core.c:890
 submit_bio block/blk-core.c:962 [inline]
 submit_bio+0x1ea/0x430 block/blk-core.c:920
 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:517
 __fput+0x286/0x9f0 fs/file_table.c:317
 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_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f706cc8e049
Code: Unable to access opcode bytes at RIP 0x7f706cc8e01f.
RSP: 002b:00007f706b603218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f706cda0f68 RCX: 00007f706cc8e049
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f706cda0f68
RBP: 00007f706cda0f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f706cda0f6c
R13: 00007ffc614bdb3f R14: 00007f706b603300 R15: 0000000000022000
 </TASK>