================================================================== BUG: KCSAN: data-race in bdev_statx / queue_limits_commit_update read to 0xffff888101dccfd0 of 4 bytes by task 17799 on cpu 1: queue_io_min include/linux/blkdev.h:1405 [inline] bdev_io_min include/linux/blkdev.h:1410 [inline] bdev_statx+0x295/0x2d0 block/bdev.c:1358 vfs_getattr_nosec+0x1b6/0x1e0 fs/stat.c:227 vfs_getattr+0x48/0x60 fs/stat.c:262 vfs_statx_path+0x28/0x140 fs/stat.c:299 vfs_statx+0xc4/0x170 fs/stat.c:356 vfs_fstatat+0x118/0x170 fs/stat.c:373 __do_sys_newfstatat fs/stat.c:538 [inline] __se_sys_newfstatat+0x55/0x3e0 fs/stat.c:532 __x64_sys_newfstatat+0x55/0x70 fs/stat.c:532 x64_sys_call+0x2c64/0x3020 arch/x86/include/generated/asm/syscalls_64.h:263 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x12c/0x370 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f write to 0xffff888101dccf90 of 192 bytes by task 19330 on cpu 0: queue_limits_commit_update+0x4b/0x160 block/blk-settings.c:577 loop_configure+0x78c/0x9c0 drivers/block/loop.c:1064 lo_ioctl+0x1e1/0x13a0 drivers/block/loop.c:1534 blkdev_ioctl+0x387/0x460 block/ioctl.c:804 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+0x12c/0x370 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: 19330 Comm: syz.7.4067 Tainted: G W syzkaller #0 PREEMPT(full) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 ================================================================== loop7: detected capacity change from 0 to 512 EXT4-fs (loop7): encrypted files will use data=ordered instead of data journaling mode EXT4-fs error (device loop7): ext4_mb_generate_buddy:1317: group 0, block bitmap and bg descriptor inconsistent: 191 vs 220 free clusters EXT4-fs (loop7): 1 truncate cleaned up EXT4-fs (loop7): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.