loop1: detected capacity change from 0 to 2048
EXT4-fs: Ignoring removed mblk_io_submit option
EXT4-fs (loop1): couldn't mount as ext3 due to feature incompatibilities
==================================================================
BUG: KCSAN: data-race in blkdev_open / queue_limits_commit_update

read to 0xffff888101da2110 of 4 bytes by task 2981 on cpu 1:
 bdev_can_atomic_write include/linux/blkdev.h:1863 [inline]
 blkdev_open+0x153/0x280 block/fops.c:667
 do_dentry_open+0x49f/0xa60 fs/open.c:947
 vfs_open+0x37/0x1e0 fs/open.c:1052
 do_open fs/namei.c:4700 [inline]
 path_openat+0x1b39/0x2000 fs/namei.c:4859
 do_file_open+0x16c/0x290 fs/namei.c:4888
 do_sys_openat2+0xa0/0x130 fs/open.c:1368
 do_sys_open fs/open.c:1374 [inline]
 __do_sys_openat fs/open.c:1390 [inline]
 __se_sys_openat fs/open.c:1385 [inline]
 __x64_sys_openat+0xf2/0x120 fs/open.c:1385
 x64_sys_call+0x1e39/0x3020 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x136/0x3c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

write to 0xffff888101da2080 of 192 bytes by task 17202 on cpu 0:
 queue_limits_commit_update+0x4b/0x160 block/blk-settings.c:564
 __loop_clr_fd drivers/block/loop.c:1137 [inline]
 lo_release+0x217/0x430 drivers/block/loop.c:1747
 bdev_release+0x375/0x3d0 block/bdev.c:-1
 blkdev_release+0x15/0x20 block/fops.c:680
 __fput+0x29e/0x630 fs/file_table.c:512
 fput_close_sync+0xad/0x190 fs/file_table.c:617
 __do_sys_close fs/open.c:1511 [inline]
 __se_sys_close fs/open.c:1496 [inline]
 __x64_sys_close+0x55/0xf0 fs/open.c:1496
 x64_sys_call+0x275d/0x3020 arch/x86/include/generated/asm/syscalls_64.h:4
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x136/0x3c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 17202 Comm: syz.1.3733 Tainted: G        W           syzkaller #0 PREEMPT(lazy) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
==================================================================
netlink: 28 bytes leftover after parsing attributes in process `syz.1.3733'.
netlink: 128 bytes leftover after parsing attributes in process `syz.1.3733'.
loop1: detected capacity change from 0 to 1764