------------[ cut here ]------------ Trying to write to read-only block-device loop3 (partno 0) WARNING: CPU: 1 PID: 4588 at block/blk-core.c:705 bio_check_ro block/blk-core.c:705 [inline] WARNING: CPU: 1 PID: 4588 at block/blk-core.c:705 submit_bio_checks+0x1577/0x18d0 block/blk-core.c:833 Modules linked in: CPU: 1 PID: 4588 Comm: syz-executor.3 Not tainted 5.10.56 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:bio_check_ro block/blk-core.c:705 [inline] RIP: 0010:submit_bio_checks+0x1577/0x18d0 block/blk-core.c:833 Code: 03 00 00 45 8b a4 24 64 05 00 00 48 89 ef 48 8d 74 24 50 e8 6b 36 fe ff 48 c7 c7 a0 51 3a 84 48 89 c6 44 89 e2 e8 18 ca d3 01 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 80 3c 02 RSP: 0018:ffff88800f266aa0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 1ffff11001e4cd5a RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff812930d3 RDI: ffffed1001e4cd46 RBP: ffff88800ea75100 R08: 0000000000000001 R09: ffff88806cf1ff9b R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88800edd8c10 R14: ffff88800ea75110 R15: ffff88800ea75108 FS: 00007fe653980700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000056c000 CR3: 000000000f2f0000 CR4: 0000000000350ee0 Call Trace: submit_bio_noacct+0x7a/0xce0 block/blk-core.c:1045 submit_bio+0xf3/0x4e0 block/blk-core.c:1130 ext4_io_submit fs/ext4/page-io.c:382 [inline] io_submit_add_bh fs/ext4/page-io.c:425 [inline] ext4_bio_write_page+0x985/0x1380 fs/ext4/page-io.c:552 mpage_submit_page+0x14b/0x250 fs/ext4/inode.c:2101 mpage_process_page_bufs+0x5fc/0x710 fs/ext4/inode.c:2215 mpage_prepare_extent_to_map+0x64d/0xb70 fs/ext4/inode.c:2627 ext4_writepages+0x917/0x3590 fs/ext4/inode.c:2755 do_writepages+0xee/0x290 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x247/0x2f0 mm/filemap.c:422 file_write_and_wait_range+0xb2/0x120 mm/filemap.c:761 ext4_sync_file+0x225/0xf30 fs/ext4/fsync.c:151 vfs_fsync_range+0x13d/0x230 fs/sync.c:200 generic_write_sync include/linux/fs.h:2739 [inline] ext4_buffered_write_iter+0x36a/0x4d0 fs/ext4/file.c:278 ext4_file_write_iter+0x4ee/0x1890 fs/ext4/file.c:681 call_write_iter include/linux/fs.h:1903 [inline] do_iter_readv_writev+0x476/0x750 fs/read_write.c:740 do_iter_write+0x18d/0x670 fs/read_write.c:866 vfs_iter_write+0x70/0xa0 fs/read_write.c:907 iter_file_splice_write+0x71d/0xbe0 fs/splice.c:686 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0x10f/0x170 fs/splice.c:933 splice_direct_to_actor+0x387/0x980 fs/splice.c:888 do_splice_direct+0x1c4/0x290 fs/splice.c:976 generic_copy_file_range fs/read_write.c:1386 [inline] do_copy_file_range fs/read_write.c:1409 [inline] vfs_copy_file_range+0x57b/0x10f0 fs/read_write.c:1516 __do_sys_copy_file_range+0x176/0x410 fs/read_write.c:1569 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe653980188 EFLAGS: 00000246 ORIG_RAX: 0000000000000146 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609 RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00000000004bfcb9 R08: 000000000200f5ef R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffc2263186f R14: 00007fe653980300 R15: 0000000000022000 irq event stamp: 5041 hardirqs last enabled at (5047): [] console_trylock_spinning kernel/printk/printk.c:1847 [inline] hardirqs last enabled at (5047): [] vprintk_emit+0x482/0x4d0 kernel/printk/printk.c:2051 hardirqs last disabled at (5052): [] console_trylock_spinning kernel/printk/printk.c:1826 [inline] hardirqs last disabled at (5052): [] vprintk_emit+0x414/0x4d0 kernel/printk/printk.c:2051 softirqs last enabled at (4290): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4239): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace 612bc343b935ab99 ]--- FAT-fs (loop4): Unrecognized mount option "noFÃôd@ °C¯numtail=0" or missing value FAT-fs (loop4): Unrecognized mount option "noFÃôd@ °C¯numtail=0" or missing value