------------[ cut here ]------------
generic_make_request: Trying to write to read-only block-device loop0 (partno 0)
WARNING: CPU: 1 PID: 9211 at block/blk-core.c:800 bio_check_ro block/blk-core.c:800 [inline]
WARNING: CPU: 1 PID: 9211 at block/blk-core.c:800 generic_make_request_checks+0x1c78/0x2190 block/blk-core.c:901
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 9211 Comm: syz-executor.0 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+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
 do_invalid_op+0x37/0x50 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+0x1c78/0x2190 block/blk-core.c:901
Code: 00 00 44 8b ab 5c 05 00 00 48 8d b5 78 ff ff ff 4c 89 ff e8 5a 94 05 00 48 c7 c7 c0 47 05 88 48 89 c6 44 89 ea e8 a7 e4 0e fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02
RSP: 0018:ffff888097e8f300 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff8880a3b62000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815dc196 RDI: ffffed1012fd1e52
RBP: ffff888097e8f400 R08: ffff8880a1908040 R09: fffffbfff1532e1e
R10: fffffbfff1532e1d R11: ffffffff8a9970ef R12: ffff888092bab108
R13: 0000000000000000 R14: 0000000000000001 R15: ffff888092bab100
 generic_make_request+0x8f/0xb50 block/blk-core.c:1020
 submit_bio+0x113/0x600 block/blk-core.c:1192
 submit_bh_wbc+0x6b6/0x900 fs/buffer.c:3095
 __block_write_full_page+0x7fe/0x11b0 fs/buffer.c:1767
 block_write_full_page+0x21f/0x270 fs/buffer.c:2953
 blkdev_writepage+0x25/0x30 fs/block_dev.c:609
 __writepage+0x66/0x110 mm/page-writeback.c:2303
 write_cache_pages+0x80c/0x13f0 mm/page-writeback.c:2238
 generic_writepages mm/page-writeback.c:2329 [inline]
 generic_writepages+0xed/0x160 mm/page-writeback.c:2318
 blkdev_writepages+0x1e/0x30 fs/block_dev.c:2060
 do_writepages+0xfa/0x2a0 mm/page-writeback.c:2344
 __filemap_fdatawrite_range+0x2bc/0x3b0 mm/filemap.c:421
 __filemap_fdatawrite mm/filemap.c:429 [inline]
 filemap_fdatawrite mm/filemap.c:434 [inline]
 filemap_write_and_wait mm/filemap.c:640 [inline]
 filemap_write_and_wait+0xf8/0x1e0 mm/filemap.c:635
 __sync_blockdev fs/block_dev.c:491 [inline]
 sync_blockdev fs/block_dev.c:500 [inline]
 __blkdev_put+0x204/0x810 fs/block_dev.c:1889
 blkdev_put+0x98/0x560 fs/block_dev.c:1958
 blkdev_close+0x8b/0xb0 fs/block_dev.c:1965
 __fput+0x2ff/0x890 fs/file_table.c:280
 ____fput+0x16/0x20 fs/file_table.c:313
 task_work_run+0x145/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x316/0x380 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:278 [inline]
 do_syscall_32_irqs_on arch/x86/entry/common.c:352 [inline]
 do_fast_syscall_32+0xbbd/0xe16 arch/x86/entry/common.c:408
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f4ea39
Code: 00 00 00 89 d3 5b 5e 5f 5d c3 b8 80 96 98 00 eb c4 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ff9e6c4c EFLAGS: 00000246 ORIG_RAX: 0000000000000006
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000008170620
RDX: 0000000000000005 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..