------------[ cut here ]------------
Trying to write to read-only block-device nullb0 (partno 0)
WARNING: CPU: 1 PID: 4034 at block/blk-core.c:704 bio_check_ro block/blk-core.c:704 [inline]
WARNING: CPU: 1 PID: 4034 at block/blk-core.c:704 submit_bio_checks+0x11b0/0x12fc block/blk-core.c:817
Modules linked in:
CPU: 1 PID: 4034 Comm: syz-executor.0 Not tainted 5.12.0-rc8-syzkaller-00011-g18a3c5f7abfd #0
Hardware name: riscv-virtio,qemu (DT)
epc : bio_check_ro block/blk-core.c:704 [inline]
epc : submit_bio_checks+0x11b0/0x12fc block/blk-core.c:817
 ra : bio_check_ro block/blk-core.c:704 [inline]
 ra : submit_bio_checks+0x11b0/0x12fc block/blk-core.c:817
epc : ffffffe0008c5c6c ra : ffffffe0008c5c6c sp : ffffffe005797500
 gp : ffffffe0045883c0 tp : ffffffe008b92f80 t0 : ffffffe004ffdbb7
 t1 : ffffffc400af2e3c t2 : 0000000000000000 s0 : ffffffe0057975c0
 s1 : ffffffe007b4a640 a0 : 000000000000003b a1 : 00000000000f0000
 a2 : 0000000000000002 a3 : ffffffe0000e1458 a4 : f294ab55e3358c00
 a5 : f294ab55e3358c00 a6 : 0000000000f00000 a7 : ffffffe0057971e7
 s2 : ffffffe00c908de0 s3 : 0000000000000000 s4 : ffffffe005a11600
 s5 : ffffffe007b4a650 s6 : ffffffe00458c0d0 s7 : ffffffe00c9092ec
 s8 : ffffffe005797528 s9 : ffffffe007b4a648 s10: ffffffe005a11600
 s11: 0000000000000000 t3 : f294ab55e3358c00 t4 : ffffffc400af2e3b
 t5 : ffffffc400af2e3d t6 : ffffffe0057971e8
status: 0000000000000120 badaddr: 0000000000000000 cause: 0000000000000003
Call Trace:
[<ffffffe0008c5c6c>] bio_check_ro block/blk-core.c:704 [inline]
[<ffffffe0008c5c6c>] submit_bio_checks+0x11b0/0x12fc block/blk-core.c:817
[<ffffffe0008c8fe0>] submit_bio_noacct+0x3e/0x818 block/blk-core.c:1032
[<ffffffe0008c99bc>] submit_bio+0x202/0x408 block/blk-core.c:1118
[<ffffffe000485f96>] submit_bh_wbc+0x33c/0x3aa fs/buffer.c:3055
[<ffffffe00048c1c6>] __block_write_full_page+0x674/0xc1c fs/buffer.c:1810
[<ffffffe00048c99a>] block_write_full_page+0xfc/0x10a fs/buffer.c:2981
[<ffffffe000491e14>] blkdev_writepage+0x28/0x34 fs/block_dev.c:639
[<ffffffe0002b8a0e>] __writepage+0x42/0xfa mm/page-writeback.c:2311
[<ffffffe0002bca72>] write_cache_pages+0x540/0xc76 mm/page-writeback.c:2246
[<ffffffe0002bd21e>] generic_writepages mm/page-writeback.c:2337 [inline]
[<ffffffe0002bd21e>] generic_writepages+0x76/0xb4 mm/page-writeback.c:2326
[<ffffffe000491db4>] blkdev_writepages+0x24/0x30 fs/block_dev.c:1748
[<ffffffe0002c2038>] do_writepages+0x80/0x180 mm/page-writeback.c:2352
[<ffffffe0002a510a>] __filemap_fdatawrite_range+0x192/0x1f0 mm/filemap.c:424
[<ffffffe0002a5292>] filemap_write_and_wait_range mm/filemap.c:657 [inline]
[<ffffffe0002a5292>] filemap_write_and_wait_range+0x9c/0x2e0 mm/filemap.c:651
[<ffffffe0004952ba>] filemap_write_and_wait include/linux/fs.h:2753 [inline]
[<ffffffe0004952ba>] __sync_blockdev fs/block_dev.c:526 [inline]
[<ffffffe0004952ba>] sync_blockdev fs/block_dev.c:535 [inline]
[<ffffffe0004952ba>] __blkdev_put+0x3f2/0x434 fs/block_dev.c:1576
[<ffffffe00049582a>] blkdev_put+0x7e/0x2b4 fs/block_dev.c:1645
[<ffffffe000495aa2>] blkdev_close+0x42/0x50 fs/block_dev.c:1653
[<ffffffe0003fe10c>] __fput+0x166/0x49a fs/file_table.c:280
[<ffffffe0003fe4a6>] ____fput+0x1a/0x24 fs/file_table.c:313
[<ffffffe00006d354>] task_work_run+0xd0/0x148 kernel/task_work.c:140
[<ffffffe00000845e>] tracehook_notify_resume include/linux/tracehook.h:189 [inline]
[<ffffffe00000845e>] do_notify_resume+0x700/0x930 arch/riscv/kernel/signal.c:320
[<ffffffe000005586>] ret_from_exception+0x0/0x14
irq event stamp: 2506
hardirqs last  enabled at (2505): [<ffffffe0000ddb8a>] console_unlock+0x816/0x98a kernel/printk/printk.c:2605
hardirqs last disabled at (2506): [<ffffffe0000054bc>] _save_context+0x80/0x90
softirqs last  enabled at (2404): [<ffffffe002a9b578>] __do_softirq+0x5e0/0x8c4 kernel/softirq.c:372
softirqs last disabled at (2383): [<ffffffe00003507e>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (2383): [<ffffffe00003507e>] invoke_softirq kernel/softirq.c:228 [inline]
softirqs last disabled at (2383): [<ffffffe00003507e>] __irq_exit_rcu kernel/softirq.c:422 [inline]
softirqs last disabled at (2383): [<ffffffe00003507e>] irq_exit+0x1a0/0x1b6 kernel/softirq.c:446
---[ end trace 14c28e969c3579b8 ]---