================================================================== BUG: KCSAN: data-race in bdev_statx / queue_limits_commit_update read to 0xffff8881022060c0 of 4 bytes by task 3286 on cpu 0: queue_io_min include/linux/blkdev.h:1418 [inline] bdev_io_min include/linux/blkdev.h:1423 [inline] bdev_statx+0x297/0x2d0 block/bdev.c:1351 vfs_getattr_nosec+0x1b6/0x1e0 fs/stat.c:227 vfs_getattr fs/stat.c:262 [inline] vfs_fstat fs/stat.c:281 [inline] __do_sys_newfstat fs/stat.c:551 [inline] __se_sys_newfstat+0x96/0x460 fs/stat.c:546 __x64_sys_newfstat+0x31/0x40 fs/stat.c:546 x64_sys_call+0x2773/0x3020 arch/x86/include/generated/asm/syscalls_64.h:6 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 0xffff888102206080 of 192 bytes by task 4880 on cpu 1: queue_limits_commit_update+0x4b/0x160 block/blk-settings.c:564 loop_configure+0x78a/0x9c0 drivers/block/loop.c:1060 lo_ioctl+0x1e1/0x1390 drivers/block/loop.c:1530 blkdev_ioctl+0x387/0x460 block/ioctl.c:797 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xce/0x140 fs/ioctl.c:583 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:583 x64_sys_call+0x1563/0x3020 arch/x86/include/generated/asm/syscalls_64.h:17 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: 1 UID: 0 PID: 4880 Comm: syz.1.414 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 ================================================================== loop1: detected capacity change from 0 to 256 FAT-fs (loop1): data area starts beyond volume (274 > 64) FAT-fs (loop1): Can't find a valid FAT filesystem netlink: 12 bytes leftover after parsing attributes in process `syz.1.414'.