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BUG: KCSAN: data-race in __test_and_clear_bit_le / _find_next_zero_bit

read-write to 0xffff888237c4e0f0 of 8 bytes by task 17034 on cpu 1:
 instrument_read_write include/linux/instrumented.h:55 [inline]
 __instrument_read_write_bitop include/asm-generic/bitops/instrumented-non-atomic.h:84 [inline]
 ___test_and_clear_bit include/asm-generic/bitops/instrumented-non-atomic.h:114 [inline]
 __test_and_clear_bit_le+0x31/0x60 include/asm-generic/bitops/le.h:61
 ext4_free_inode+0x3f0/0x810 fs/ext4/ialloc.c:316
 ext4_evict_inode+0xb25/0xdd0 fs/ext4/inode.c:303
 evict+0x1ae/0x420 fs/inode.c:667
 iput_final fs/inode.c:1741 [inline]
 iput+0x432/0x5c0 fs/inode.c:1767
 d_delete_notify include/linux/fsnotify.h:307 [inline]
 vfs_rmdir+0x27e/0x300 fs/namei.c:4222
 do_rmdir+0x194/0x320 fs/namei.c:4268
 __do_sys_unlinkat fs/namei.c:4444 [inline]
 __se_sys_unlinkat fs/namei.c:4438 [inline]
 __x64_sys_unlinkat+0xa4/0xb0 fs/namei.c:4438
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

read to 0xffff888237c4e0f0 of 8 bytes by task 23562 on cpu 0:
 _find_next_zero_bit+0x94/0xf0 lib/find_bit.c:198
 find_next_zero_bit include/linux/find.h:186 [inline]
 find_next_zero_bit_le include/linux/find.h:485 [inline]
 find_inode_bit+0xae/0x320 fs/ext4/ialloc.c:724
 __ext4_new_inode+0xce1/0x2270 fs/ext4/ialloc.c:1064
 ext4_mkdir+0x27f/0x740 fs/ext4/namei.c:3013
 vfs_mkdir+0x1f7/0x300 fs/namei.c:4126
 do_mkdirat+0x12f/0x2a0 fs/namei.c:4149
 __do_sys_mkdirat fs/namei.c:4164 [inline]
 __se_sys_mkdirat fs/namei.c:4162 [inline]
 __x64_sys_mkdirat+0x50/0x60 fs/namei.c:4162
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

value changed: 0x0000003e835ffdff -> 0x0000003e835fbfff

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 23562 Comm: syz-executor.2 Not tainted 6.8.0-syzkaller-13182-g484193fecd2b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
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