------------[ cut here ]------------ Trying to write to read-only block-device loop6 (partno 0) WARNING: CPU: 1 PID: 8241 at block/blk-core.c:704 bio_check_ro block/blk-core.c:704 [inline] WARNING: CPU: 1 PID: 8241 at block/blk-core.c:704 submit_bio_checks+0x1577/0x18d0 block/blk-core.c:832 Modules linked in: CPU: 1 PID: 8241 Comm: syz-executor.6 Not tainted 5.10.123 #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:704 [inline] RIP: 0010:submit_bio_checks+0x1577/0x18d0 block/blk-core.c:832 Code: 03 00 00 45 8b a4 24 a4 05 00 00 48 89 ef 48 8d 74 24 50 e8 7b 32 fe ff 48 c7 c7 60 73 3a 84 48 89 c6 44 89 e2 e8 5f fe ea 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:ffff888044806cc8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 1ffff11008900d9f RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff812929e3 RDI: ffffed1008900d8b RBP: ffff88804b00ba00 R08: 0000000000000001 R09: ffff88806cf37b4f R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88800efbb040 R14: ffff88804b00ba10 R15: ffff88804b00ba08 FS: 00007f696520a700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f69651e8d58 CR3: 00000000469ae000 CR4: 0000000000350ee0 Call Trace: submit_bio_noacct+0x7a/0xce0 block/blk-core.c:1042 submit_bio+0xf3/0x4e0 block/blk-core.c:1127 mpage_bio_submit fs/mpage.c:66 [inline] __mpage_writepage+0x104a/0x1680 fs/mpage.c:647 write_cache_pages+0x57f/0xef0 mm/page-writeback.c:2246 mpage_writepages+0xd8/0x230 fs/mpage.c:714 do_writepages+0xee/0x290 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x247/0x2f0 mm/filemap.c:422 filemap_write_and_wait_range mm/filemap.c:655 [inline] filemap_write_and_wait_range+0x65/0x100 mm/filemap.c:649 generic_file_direct_write+0x38d/0x560 mm/filemap.c:3208 __generic_file_write_iter+0x231/0x5d0 mm/filemap.c:3419 generic_file_write_iter+0xd7/0x220 mm/filemap.c:3494 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: 0033:0x7f6967c94b19 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:00007f696520a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000146 RAX: ffffffffffffffda RBX: 00007f6967da7f60 RCX: 00007f6967c94b19 RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f6967ceef6d R08: 000000000200f5ef R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffecad5bb8f R14: 00007f696520a300 R15: 0000000000022000 irq event stamp: 17461 hardirqs last enabled at (17467): [] console_trylock_spinning kernel/printk/printk.c:1849 [inline] hardirqs last enabled at (17467): [] vprintk_emit+0x482/0x4d0 kernel/printk/printk.c:2053 hardirqs last disabled at (17472): [] console_trylock_spinning kernel/printk/printk.c:1828 [inline] hardirqs last disabled at (17472): [] vprintk_emit+0x414/0x4d0 kernel/printk/printk.c:2053 softirqs last enabled at (16954): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (16885): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace 1e917a6d80edfae5 ]--- EXT4-fs warning (device loop4): ext4_multi_mount_protect:384: Unable to create kmmpd thread for loop4. audit: type=1326 audit(1662014068.833:25): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=8308 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fb352362b19 code=0x0 blktrace: Concurrent blktraces are not allowed on loop6