================================================================== BUG: KCSAN: data-race in __test_and_clear_bit_le / _find_next_zero_bit read-write to 0xffff8881052360f0 of 8 bytes by task 29971 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 do_unlinkat+0x282/0x4c0 fs/namei.c:4409 __do_sys_unlink fs/namei.c:4450 [inline] __se_sys_unlink fs/namei.c:4448 [inline] __x64_sys_unlink+0x30/0x40 fs/namei.c:4448 do_syscall_64+0xd3/0x1d0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 read to 0xffff8881052360f0 of 8 bytes by task 3325 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_symlink+0x242/0x5a0 fs/ext4/namei.c:3395 vfs_symlink+0xca/0x1b0 fs/namei.c:4484 do_symlinkat+0xe3/0x350 fs/namei.c:4510 __do_sys_symlinkat fs/namei.c:4526 [inline] __se_sys_symlinkat fs/namei.c:4523 [inline] __x64_sys_symlinkat+0x62/0x70 fs/namei.c:4523 do_syscall_64+0xd3/0x1d0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 value changed: 0xadfbffffffffffff -> 0xacfbffffffffefff Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3325 Comm: syz-executor.1 Tainted: G W 6.8.0-syzkaller-11136-g66a27abac311 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 ==================================================================