EXT4-fs (loop0): warning: checktime reached, running e2fsck is recommended
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
------------[ cut here ]------------
generic_make_request: Trying to write to read-only block-device loop0 (partno 0)
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 354 Comm: syz-executor899 Not tainted 5.4.82-syzkaller-00042-gd7ec680881a1 #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+0x1dd/0x24e lib/dump_stack.c:118
 panic+0x285/0x750 kernel/panic.c:221
 __warn+0x1fd/0x200 kernel/panic.c:582
 report_bug+0x390/0x4d0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap arch/x86/kernel/traps.c:272 [inline]
 do_invalid_op+0x6e/0x110 arch/x86/kernel/traps.c:291
 invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:1029
RIP: 0010:bio_check_ro block/blk-core.c:806 [inline]
RIP: 0010:generic_make_request_checks+0xc8e/0xf50 block/blk-core.c:907
Code: e8 03 48 b9 00 00 00 00 00 fc ff df 8a 04 08 84 c0 0f 85 ad 02 00 00 8b 13 48 c7 c7 aa 4b fe 84 4c 89 fe 31 c0 e8 d2 72 24 ff <0f> 0b 4c 8b 7c 24 10 e9 39 f7 ff ff 48 8b 0c 24 80 e1 07 80 c1 03
RSP: 0018:ffff8881e891f620 EFLAGS: 00010246
RAX: de92e508037a1100 RBX: ffff8881f3eb43fc RCX: ffff8881e8e13e00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffff8881e891f770 R08: ffffffff814c5b21 R09: ffffed103ee05e08
R10: ffffed103ee05e08 R11: 0000000000000000 R12: 1ffff1103dd39e51
R13: ffff8881f3ec6d48 R14: ffff8881ee9cf288 R15: ffff8881e891f6a0
 generic_make_request+0xbe/0xde0 block/blk-core.c:1026
 submit_bio+0x145/0x560 block/blk-core.c:1200
 submit_bh fs/buffer.c:3076 [inline]
 __sync_dirty_buffer+0x1d2/0x2d0 fs/buffer.c:3171
 ext4_commit_super+0x857/0xa30 fs/ext4/super.c:5168
 ext4_put_super+0x31e/0xc10 fs/ext4/super.c:1004
 generic_shutdown_super+0x11b/0x2a0 fs/super.c:464
 kill_block_super+0x79/0xd0 fs/super.c:1444
 deactivate_locked_super+0xaf/0x100 fs/super.c:335
 deactivate_super+0x1b8/0x280 fs/super.c:366
 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102
 task_work_run+0x176/0x1a0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xcc2/0x2830 kernel/exit.c:811
 do_group_exit+0x155/0x2b0 kernel/exit.c:909
 __do_sys_exit_group+0x13/0x20 kernel/exit.c:920
 __se_sys_exit_group+0x10/0x10 kernel/exit.c:918
 __x64_sys_exit_group+0x37/0x40 kernel/exit.c:918
 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4437f8
Code: Bad RIP value.
RSP: 002b:00007fff41425e88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00000000004437f8
RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00000000004c3b90 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 000000000000000f R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d6180 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..