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BUG: KCSAN: data-race in has_bh_in_lru / invalidate_bh_lru

write to 0xffff888237c2a388 of 8 bytes by task 12668 on cpu 0:
 __invalidate_bh_lrus fs/buffer.c:1493 [inline]
 invalidate_bh_lru+0x88/0xf0 fs/buffer.c:1505
 csd_do_func kernel/smp.c:131 [inline]
 smp_call_function_many_cond+0x697/0xc20 kernel/smp.c:826
 on_each_cpu_cond_mask+0x3c/0x80 kernel/smp.c:1003
 on_each_cpu_cond include/linux/smp.h:105 [inline]
 invalidate_bh_lrus+0x2a/0x30 fs/buffer.c:1524
 kill_bdev block/bdev.c:75 [inline]
 set_blocksize+0x260/0x290 block/bdev.c:152
 sb_set_blocksize+0x2d/0xb0 block/bdev.c:161
 isofs_fill_super+0x10a5/0x1840 fs/isofs/inode.c:862
 mount_bdev+0x1c4/0x260 fs/super.c:1391
 isofs_mount+0x31/0x40 fs/isofs/inode.c:1564
 legacy_get_tree+0x74/0xd0 fs/fs_context.c:611
 vfs_get_tree+0x51/0x190 fs/super.c:1519
 do_new_mount+0x203/0x660 fs/namespace.c:3335
 path_mount+0x496/0xb30 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3861
 __x64_sys_mount+0x67/0x80 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff888237c2a388 of 8 bytes by task 3114 on cpu 1:
 has_bh_in_lru+0x35/0x1e0 fs/buffer.c:1515
 smp_call_function_many_cond+0x2e4/0xc20 kernel/smp.c:788
 on_each_cpu_cond_mask+0x3c/0x80 kernel/smp.c:1003
 on_each_cpu_cond include/linux/smp.h:105 [inline]
 invalidate_bh_lrus+0x2a/0x30 fs/buffer.c:1524
 kill_bdev block/bdev.c:75 [inline]
 blkdev_flush_mapping+0xb6/0x1c0 block/bdev.c:647
 blkdev_put_whole block/bdev.c:678 [inline]
 blkdev_put+0x33a/0x470 block/bdev.c:915
 kill_block_super+0x58/0x60 fs/super.c:1419
 deactivate_locked_super+0x6b/0xd0 fs/super.c:330
 deactivate_super+0x9b/0xb0 fs/super.c:361
 cleanup_mnt+0x272/0x2e0 fs/namespace.c:1254
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1261
 task_work_run+0x135/0x1a0 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xd1/0xe0 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0x6c/0xb0 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x26/0x140 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0xffff888109decea0 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3114 Comm: syz-executor.4 Not tainted 6.5.0-rc5-syzkaller-00296-gf8de32cc060b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
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