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generic_make_request: Trying to write to read-only block-device nullb0 (partno 0)
WARNING: CPU: 0 PID: 8117 at block/blk-core.c:803 bio_check_ro block/blk-core.c:800 [inline]
WARNING: CPU: 0 PID: 8117 at block/blk-core.c:803 generic_make_request_checks+0x636/0x1540 block/blk-core.c:901
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8117 Comm: syz-executor029 Not tainted 5.4.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fb/0x318 lib/dump_stack.c:118
 panic+0x264/0x7a9 kernel/panic.c:221
 __warn+0x20e/0x210 kernel/panic.c:582
 report_bug+0x1b6/0x2f0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0xd7/0x440 arch/x86/kernel/traps.c:267
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:bio_check_ro block/blk-core.c:800 [inline]
RIP: 0010:generic_make_request_checks+0x636/0x1540 block/blk-core.c:901
Code: 5c 05 00 00 4c 89 f8 48 c1 e8 03 8a 04 08 84 c0 0f 85 f8 0e 00 00 41 8b 17 48 c7 c7 8d 3a c8 88 4c 89 f6 31 c0 e8 ba e9 cd fd <0f> 0b e9 2d fc ff ff e8 de d1 fb fd c6 05 4e f4 c4 05 01 48 c7 c7
RSP: 0018:ffff88808ea97450 EFLAGS: 00010246
RAX: 383e45848dfe2f00 RBX: 0000000000000001 RCX: ffff888097b1e500
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffff88808ea97510 R08: ffffffff815fa3f4 R09: ffffed1015d4458a
R10: ffffed1015d4458a R11: 0000000000000000 R12: 1ffff110145bef21
R13: ffff8880a2df7908 R14: ffff88808ea974b0 R15: ffff8880a27a155c
 generic_make_request+0x33/0x980 block/blk-core.c:1020
 submit_bio+0x26b/0x540 block/blk-core.c:1192
 submit_bh_wbc+0x619/0x700 fs/buffer.c:3133
 __block_write_full_page+0x943/0x1070 fs/buffer.c:1805
 block_write_full_page+0x1a4/0x220 include/linux/highmem.h:102
 blkdev_writepage+0x24/0x30 fs/block_dev.c:609
 __writepage+0x63/0xd0 mm/page-writeback.c:2303
 write_cache_pages+0x94a/0xe70 mm/page-writeback.c:2238
 generic_writepages+0x93/0xd0 mm/page-writeback.c:2329
 blkdev_writepages+0x1d/0x30 fs/block_dev.c:2060
 do_writepages+0xfb/0x1f0 mm/page-writeback.c:2344
 __filemap_fdatawrite_range+0x2c2/0x360 mm/filemap.c:421
 __filemap_fdatawrite mm/filemap.c:429 [inline]
 filemap_fdatawrite mm/filemap.c:434 [inline]
 filemap_write_and_wait+0xca/0x160 mm/filemap.c:640
 __sync_blockdev fs/block_dev.c:491 [inline]
 sync_blockdev fs/block_dev.c:500 [inline]
 __blkdev_put+0x1a2/0x6d0 fs/block_dev.c:1889
 blkdev_put+0x2c8/0x3b0 fs/block_dev.c:1958
 blkdev_close+0x7b/0xa0 fs/block_dev.c:1965
 __fput+0x2e4/0x740 fs/file_table.c:280
 ____fput+0x15/0x20 fs/file_table.c:313
 task_work_run+0x17e/0x1b0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x5c4/0x2020 kernel/exit.c:797
 do_group_exit+0x15c/0x2b0 kernel/exit.c:895
 __do_sys_exit_group+0x17/0x20 kernel/exit.c:906
 __se_sys_exit_group+0x14/0x20 kernel/exit.c:904
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:904
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x43edf8
Code: Bad RIP value.
RSP: 002b:00007ffe99417018 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043edf8
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004be608 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..