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BUG: KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru

write to 0xffff888237d2bb10 of 8 bytes by task 3559 on cpu 1:
 __invalidate_bh_lrus fs/buffer.c:1505 [inline]
 invalidate_bh_lru+0x8b/0xf0 fs/buffer.c:1517
 csd_do_func kernel/smp.c:134 [inline]
 smp_call_function_many_cond+0x690/0xc20 kernel/smp.c:875
 on_each_cpu_cond_mask+0x3c/0x90 kernel/smp.c:1051
 on_each_cpu_cond include/linux/smp.h:105 [inline]
 invalidate_bh_lrus+0x2a/0x30 fs/buffer.c:1536
 invalidate_bdev+0x42/0x70 block/bdev.c:100
 bdev_disk_changed+0xe7/0xb90 block/partitions/core.c:649
 blkdev_get_whole+0x1eb/0x2d0 block/bdev.c:707
 bdev_open+0x289/0x860 block/bdev.c:916
 blkdev_open+0x27e/0x2b0 block/fops.c:631
 do_dentry_open+0x621/0xa20 fs/open.c:958
 vfs_open+0x38/0x1f0 fs/open.c:1088
 do_open fs/namei.c:3774 [inline]
 path_openat+0x1ac2/0x1fa0 fs/namei.c:3933
 do_filp_open+0xf7/0x200 fs/namei.c:3960
 do_sys_openat2+0xab/0x120 fs/open.c:1415
 do_sys_open fs/open.c:1430 [inline]
 __do_sys_openat fs/open.c:1446 [inline]
 __se_sys_openat fs/open.c:1441 [inline]
 __x64_sys_openat+0xf3/0x120 fs/open.c:1441
 x64_sys_call+0x1025/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888237d2bb10 of 8 bytes by task 4835 on cpu 0:
 has_bh_in_lru+0x35/0x1f0 fs/buffer.c:1527
 smp_call_function_many_cond+0x2d5/0xc20 kernel/smp.c:837
 on_each_cpu_cond_mask+0x3c/0x90 kernel/smp.c:1051
 on_each_cpu_cond include/linux/smp.h:105 [inline]
 invalidate_bh_lrus+0x2a/0x30 fs/buffer.c:1536
 invalidate_bdev+0x42/0x70 block/bdev.c:100
 loop_set_block_size drivers/block/loop.c:1471 [inline]
 lo_simple_ioctl drivers/block/loop.c:1497 [inline]
 lo_ioctl+0xb38/0x11c0 drivers/block/loop.c:1560
 blkdev_ioctl+0x359/0x450 block/ioctl.c:693
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xcd/0x140 fs/ioctl.c:893
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:893
 x64_sys_call+0x15cc/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0xffff888100729478 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 4835 Comm: syz.2.234 Not tainted 6.12.0-rc2-syzkaller-00058-g75b607fab38d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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