EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000.
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BUG: KCSAN: data-race in __find_get_block / has_bh_in_lru

read-write to 0xffff888237c2bb10 of 8 bytes by task 19314 on cpu 0:
 bh_lru_install fs/buffer.c:1343 [inline]
 __find_get_block+0x434/0x8a0 fs/buffer.c:1406
 bdev_getblk+0x30/0x3b0 fs/buffer.c:1431
 __getblk include/linux/buffer_head.h:380 [inline]
 sb_getblk include/linux/buffer_head.h:386 [inline]
 ext4_getblk+0x1b4/0x500 fs/ext4/inode.c:859
 ext4_bread+0x2c/0x110 fs/ext4/inode.c:905
 ext4_quota_write+0x15a/0x370 fs/ext4/super.c:7226
 qtree_write_dquot+0x14f/0x320 fs/quota/quota_tree.c:462
 v2_write_dquot+0xd3/0x130 fs/quota/quota_v2.c:372
 dquot_commit+0x219/0x260 fs/quota/dquot.c:513
 ext4_write_dquot+0x129/0x1d0 fs/ext4/super.c:6855
 ext4_mark_dquot_dirty+0x94/0xd0 fs/ext4/super.c:6915
 mark_dquot_dirty fs/quota/dquot.c:371 [inline]
 mark_all_dquot_dirty fs/quota/dquot.c:411 [inline]
 __dquot_free_space+0x4f1/0x7f0 fs/quota/dquot.c:1927
 dquot_free_space_nodirty include/linux/quotaops.h:374 [inline]
 dquot_free_space include/linux/quotaops.h:379 [inline]
 dquot_free_block include/linux/quotaops.h:390 [inline]
 ext4_mb_new_blocks+0x1641/0x2020 fs/ext4/mballoc.c:6265
 ext4_new_meta_blocks+0xc1/0x1a0 fs/ext4/balloc.c:750
 ext4_xattr_block_set+0x1349/0x1ca0 fs/ext4/xattr.c:2121
 ext4_xattr_set_handle+0x8ac/0xbf0 fs/ext4/xattr.c:2458
 ext4_xattr_set+0x197/0x250 fs/ext4/xattr.c:2560
 ext4_xattr_security_set+0x3c/0x50 fs/ext4/xattr_security.c:31
 __vfs_setxattr+0x2e5/0x310 fs/xattr.c:200
 __vfs_setxattr_noperm+0xed/0x420 fs/xattr.c:234
 __vfs_setxattr_locked+0x1af/0x1d0 fs/xattr.c:295
 vfs_setxattr+0x140/0x290 fs/xattr.c:321
 do_setxattr fs/xattr.c:629 [inline]
 path_setxattr+0x26d/0x360 fs/xattr.c:658
 __do_sys_lsetxattr fs/xattr.c:683 [inline]
 __se_sys_lsetxattr fs/xattr.c:679 [inline]
 __x64_sys_lsetxattr+0x6a/0x80 fs/xattr.c:679
 x64_sys_call+0x2931/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:190
 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 0xffff888237c2bb10 of 8 bytes by task 13550 on cpu 1:
 has_bh_in_lru+0x35/0x1f0 fs/buffer.c:1527
 cpu_needs_drain mm/swap.c:793 [inline]
 __lru_add_drain_all+0x23f/0x3f0 mm/swap.c:880
 lru_add_drain_all+0x10/0x20 mm/swap.c:896
 invalidate_bdev+0x47/0x70 block/bdev.c:101
 ext4_put_super+0x571/0x840 fs/ext4/super.c:1349
 generic_shutdown_super+0xe5/0x220 fs/super.c:642
 kill_block_super+0x2a/0x70 fs/super.c:1710
 ext4_kill_sb+0x44/0x80 fs/ext4/super.c:7320
 deactivate_locked_super+0x7d/0x1c0 fs/super.c:473
 deactivate_super+0x9f/0xb0 fs/super.c:506
 cleanup_mnt+0x268/0x2e0 fs/namespace.c:1373
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1380
 task_work_run+0x13a/0x1a0 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xbe/0x130 kernel/entry/common.c:218
 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0000000000000000 -> 0xffff888106893c30

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 13550 Comm: syz-executor Tainted: G        W          6.12.0-rc7-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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