------------[ cut here ]------------
generic_make_request: Trying to write to read-only block-device loop0 (partno 0)
WARNING: CPU: 0 PID: 30049 at block/blk-core.c:800 bio_check_ro block/blk-core.c:800 [inline]
WARNING: CPU: 0 PID: 30049 at block/blk-core.c:800 generic_make_request_checks+0x1b34/0x2000 block/blk-core.c:904
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 30049 Comm: syz-executor549 Not tainted 5.6.0-rc5-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+0x188/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x27b/0x2f0 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+0x12b/0x220 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 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+0x1b34/0x2000 block/blk-core.c:904
Code: 53 04 00 00 44 8b ab 5c 05 00 00 48 8d 74 24 78 48 89 ef e8 3e 68 05 00 48 c7 c7 60 02 50 88 48 89 c6 44 89 ea e8 14 49 ca fd <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02
RSP: 0018:ffffc9000d69f400 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff8880a1ab8000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815bf511 RDI: fffff52001ad3e72
RBP: ffff88809ef3d900 R08: ffff888094a9a000 R09: ffffed1015cc6659
R10: ffffed1015cc6658 R11: ffff8880ae6332c7 R12: ffff88809ef3d908
R13: 0000000000000000 R14: 0000000000000001 R15: ffff8880a1b0f0b8
 generic_make_request+0x8f/0xb00 block/blk-core.c:1023
 submit_bio+0x104/0x580 block/blk-core.c:1195
 submit_bh_wbc+0x693/0x8e0 fs/buffer.c:3112
 __block_write_full_page+0x804/0x11b0 fs/buffer.c:1807
 block_write_full_page+0x21a/0x270 fs/buffer.c:2993
 __writepage+0x62/0x100 mm/page-writeback.c:2303
 write_cache_pages+0x799/0x12f0 mm/page-writeback.c:2238
 generic_writepages mm/page-writeback.c:2329 [inline]
 generic_writepages+0xed/0x160 mm/page-writeback.c:2318
 do_writepages+0xfa/0x2a0 mm/page-writeback.c:2344
 __filemap_fdatawrite_range+0x2aa/0x390 mm/filemap.c:421
 filemap_write_and_wait_range mm/filemap.c:654 [inline]
 filemap_write_and_wait_range+0xf7/0x1e0 mm/filemap.c:648
 filemap_write_and_wait include/linux/fs.h:2762 [inline]
 __sync_blockdev+0x84/0xe0 fs/block_dev.c:491
 sync_blockdev fs/block_dev.c:500 [inline]
 __blkdev_put+0x182/0x690 fs/block_dev.c:1889
 blkdev_close+0x86/0xb0 fs/block_dev.c:1965
 __fput+0x2da/0x850 fs/file_table.c:280
 task_work_run+0x13f/0x1b0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x2fa/0x360 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_64+0x6b1/0x7d0 arch/x86/entry/common.c:304
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x408681
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 24 1a 00 00 c3 48 83 ec 08 e8 6a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 b3 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007fff159f6cf0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 00007fff159f6d50 RCX: 0000000000408681
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006dfc60
R13: 000000000000000b R14: 00000000006dfc6c R15: 0000000000000001
Kernel Offset: disabled
Rebooting in 86400 seconds..