Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
F2FS-fs (loop0): Found nat_bits in checkpoint
F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
------------[ cut here ]------------
generic_make_request: Trying to write to read-only block-device loop0 (partno 0)
WARNING: CPU: 0 PID: 3807 at block/blk-core.c:2175 bio_check_ro block/blk-core.c:2172 [inline]
WARNING: CPU: 0 PID: 3807 at block/blk-core.c:2175 generic_make_request_checks+0x665/0x7d0 block/blk-core.c:2277
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 3807 Comm: syz-executor.0 Not tainted 4.19.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x87/0xba lib/dump_stack.c:113
 panic+0xef/0x24e kernel/panic.c:184
 __warn.cold.7+0x31/0x37 kernel/panic.c:536
 report_bug+0xb6/0xe0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0xfe/0x180 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:993
RIP: 0010:bio_check_ro block/blk-core.c:2172 [inline]
RIP: 0010:generic_make_request_checks+0x665/0x7d0 block/blk-core.c:2277
Code: aa dc 04 00 00 48 8d 75 b0 4c 89 ff c6 05 b4 41 74 01 01 e8 ad 7f 01 00 48 c7 c7 b0 73 81 82 48 89 c6 44 89 ea e8 68 71 b6 ff <0f> 0b 49 8b 57 08 e9 30 fa ff ff 41 8b 77 30 48 c7 c7 80 c0 b1 82
RSP: 0018:ffffc90002d3f6a0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8802331c0000 RCX: 0000000000000000
RDX: ffff880237a1d7f0 RSI: ffff880237a157a8 RDI: ffff880237a157a8
RBP: ffffc90002d3f700 R08: 0000000000000000 R09: 000000008592c826
R10: ffffffff82aa8b98 R11: ffff880220044d60 R12: 0000000000001000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff880232b63300
 generic_make_request+0x99/0x3d0 block/blk-core.c:2401
 submit_bio+0x44/0x140 block/blk-core.c:2566
 __submit_bio fs/f2fs/data.c:301 [inline]
 __submit_merged_bio+0x13d/0x460 fs/f2fs/data.c:318
 __f2fs_submit_merged_write fs/f2fs/data.c:392 [inline]
 __submit_merged_write_cond+0xac/0x210 fs/f2fs/data.c:407
 f2fs_submit_merged_write+0x18/0x20 fs/f2fs/data.c:417
 f2fs_sync_node_pages+0xb3b/0xb50 fs/f2fs/node.c:1854
 block_operations+0x12b/0x210 fs/f2fs/checkpoint.c:1136
 f2fs_write_checkpoint+0xbe/0xfc0 fs/f2fs/checkpoint.c:1466
 f2fs_sync_fs+0xc3/0x150 fs/f2fs/super.c:1108
 f2fs_create+0x128/0x2a0 fs/f2fs/namei.c:303
 lookup_open+0x2cd/0x8b0 fs/namei.c:3234
 do_last fs/namei.c:3324 [inline]
 path_openat+0x5c3/0xc30 fs/namei.c:3534
 do_filp_open+0x8e/0x100 fs/namei.c:3564
 do_sys_open+0x17d/0x210 fs/open.c:1063
 __do_sys_openat fs/open.c:1090 [inline]
 __se_sys_openat fs/open.c:1084 [inline]
 __x64_sys_openat+0x1b/0x20 fs/open.c:1084
 do_syscall_64+0x69/0x180 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f61b4a28ee9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61b45ab0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f61b4b5ffa0 RCX: 00007f61b4a28ee9
RDX: 000000000000275a RSI: 0000000020000100 RDI: ffffffffffffff9c
RBP: 00007f61b4a7547f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007f61b4b5ffa0 R15: 00007ffcc39c46b8
Kernel Offset: disabled
Rebooting in 86400 seconds..