------------[ cut here ]------------ generic_make_request: Trying to write to read-only block-device loop0 (partno 0) WARNING: CPU: 0 PID: 22654 at block/blk-core.c:855 bio_check_ro block/blk-core.c:852 [inline] WARNING: CPU: 0 PID: 22654 at block/blk-core.c:855 generic_make_request_checks+0x63f/0x17d0 block/blk-core.c:988 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 22654 Comm: syz-executor.4 Not tainted 5.8.0-rc6-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+0x1f0/0x31e lib/dump_stack.c:118 panic+0x264/0x7a0 kernel/panic.c:231 __warn+0x227/0x250 kernel/panic.c:600 report_bug+0x1b1/0x2e0 lib/bug.c:198 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:235 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:255 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:540 RIP: 0010:bio_check_ro block/blk-core.c:852 [inline] RIP: 0010:generic_make_request_checks+0x63f/0x17d0 block/blk-core.c:988 Code: ac 05 00 00 4c 89 f8 48 c1 e8 03 8a 04 08 84 c0 0f 85 78 11 00 00 41 8b 17 48 c7 c7 e7 41 14 89 4c 89 f6 31 c0 e8 31 6c bd fd <0f> 0b e9 29 fc ff ff e8 85 ab eb fd c6 05 17 2a 00 06 01 48 c7 c7 RSP: 0018:ffffc90016fe7770 EFLAGS: 00010246 RAX: 60a6b3312fe70800 RBX: 0000000000000001 RCX: ffff88803813e200 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90016fe7830 R08: ffffffff815dd389 R09: ffffed1015d062c0 R10: ffffed1015d062c0 R11: 0000000000000000 R12: ffff888054e772c8 R13: 1ffff1100a9cee59 R14: ffffc90016fe77d0 R15: ffff8880a1ca65ac generic_make_request+0x36/0xab0 block/blk-core.c:1112 submit_bio+0x1a4/0x620 block/blk-core.c:1275 __block_write_full_page+0x8bb/0x1000 fs/buffer.c:1811 __writepage+0x60/0x110 mm/page-writeback.c:2313 write_cache_pages+0x8bb/0xda0 mm/page-writeback.c:2248 generic_writepages+0x8f/0xd0 mm/page-writeback.c:2339 do_writepages+0xda/0x1f0 mm/page-writeback.c:2354 __filemap_fdatawrite_range+0x2a5/0x350 mm/filemap.c:421 filemap_write_and_wait_range+0xca/0x160 mm/filemap.c:654 filemap_write_and_wait include/linux/fs.h:2765 [inline] __sync_blockdev fs/block_dev.c:490 [inline] sync_blockdev fs/block_dev.c:499 [inline] __blkdev_put+0x111/0x7a0 fs/block_dev.c:1886 blkdev_close+0x7a/0xa0 fs/block_dev.c:1970 __fput+0x2f0/0x750 fs/file_table.c:281 task_work_run+0x137/0x1c0 kernel/task_work.c:135 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:239 [inline] __prepare_exit_to_usermode+0x14c/0x1e0 arch/x86/entry/common.c:269 do_syscall_64+0x7f/0xe0 arch/x86/entry/common.c:393 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x415ee1 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffc72fdb270 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000415ee1 RDX: 0000000000000000 RSI: 0000000000001c3c RDI: 0000000000000004 RBP: 0000000000000001 R08: 00000000ad6d3c3b R09: 00000000ad6d3c3f R10: 00007ffc72fdb360 R11: 0000000000000293 R12: 0000000000791548 R13: 000000000006e9dd R14: ffffffffffffffff R15: 000000000078bf0c Kernel Offset: disabled Rebooting in 86400 seconds..