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BUG: KCSAN: data-race in __test_and_clear_bit_le / _find_next_bit

read-write to 0xffff88823ff0b088 of 8 bytes by task 1841 on cpu 0:
 instrument_read_write include/linux/instrumented.h:57 [inline]
 __instrument_read_write_bitop include/asm-generic/bitops/instrumented-non-atomic.h:81 [inline]
 __test_and_clear_bit include/asm-generic/bitops/instrumented-non-atomic.h:109 [inline]
 __test_and_clear_bit_le+0x2f/0x40 include/asm-generic/bitops/le.h:61
 ext4_free_inode+0x3e3/0x810 fs/ext4/ialloc.c:316
 ext4_evict_inode+0xbd2/0xe40 fs/ext4/inode.c:329
 evict+0x1aa/0x410 fs/inode.c:664
 iput_final fs/inode.c:1744 [inline]
 iput+0x3f9/0x580 fs/inode.c:1770
 d_delete_notify include/linux/fsnotify.h:261 [inline]
 vfs_rmdir+0x270/0x2f0 fs/namei.c:4074
 do_rmdir+0x178/0x300 fs/namei.c:4122
 __do_sys_unlinkat fs/namei.c:4302 [inline]
 __se_sys_unlinkat fs/namei.c:4296 [inline]
 __x64_sys_unlinkat+0xa0/0xb0 fs/namei.c:4296
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

read to 0xffff88823ff0b088 of 8 bytes by task 1831 on cpu 1:
 _find_next_bit+0xe0/0x190 lib/find_bit.c:60
 find_next_zero_bit include/linux/find.h:102 [inline]
 find_next_zero_bit_le include/linux/find.h:218 [inline]
 find_inode_bit+0xc8/0x330 fs/ext4/ialloc.c:725
 __ext4_new_inode+0xc82/0x2700 fs/ext4/ialloc.c:1066
 ext4_mkdir+0x287/0x760 fs/ext4/namei.c:2955
 vfs_mkdir+0x216/0x320 fs/namei.c:3975
 do_mkdirat+0x105/0x280 fs/namei.c:4001
 __do_sys_mkdirat fs/namei.c:4016 [inline]
 __se_sys_mkdirat fs/namei.c:4014 [inline]
 __x64_sys_mkdirat+0x4c/0x60 fs/namei.c:4014
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

value changed: 0xfffbffffffffffff -> 0xbfffffffffffffff

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 1831 Comm: syz-executor.2 Not tainted 5.19.0-rc2-syzkaller-00049-g24625f7d91fb-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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