------------[ cut here ]------------
Trying to write to read-only block-device nullb0 (partno 0)
WARNING: CPU: 0 PID: 17882 at block/blk-core.c:584 bio_check_ro block/blk-core.c:584 [inline]
WARNING: CPU: 0 PID: 17882 at block/blk-core.c:584 submit_bio_checks+0x1700/0x1bf0 block/blk-core.c:697
Modules linked in:
CPU: 0 PID: 17882 Comm: syz-executor.3 Not tainted 5.17.0-rc7-syzkaller-00020-gea4424be1688 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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 33 04 8a 48 89 c6 44 89 e2 e8 d9 82 3f 05 <0f> 0b e9 a0 f3 ff ff e8 f4 24 b0 fd e8 8f 95 83 05 31 ff 89 c3 89
RSP: 0018:ffffc9000a0974a0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff88801a96b908 RCX: 0000000000000000
RDX: ffff888043d63a00 RSI: ffffffff815fe588 RDI: fffff52001412e86
RBP: ffff8880475dc8c0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815f8c1e R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880475dc8d0 R14: ffff888144852e00 R15: ffff88801a96bb9c
FS:  0000555557480400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00e1a1000 CR3: 000000007c96f000 CR4: 0000000000350ef0
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
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x27e/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: 0033:0x7f055205ac8b
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffee4099d80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00007f055205ac8b
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000005
RBP: 00007f05521bc960 R08: 0000000000000000 R09: 00007f05521bf4b0
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000016fcf5
R13: 00007f05521bf570 R14: 00007f05521baf60 R15: 0000000000000000
 </TASK>