================================================================== BUG: KCSAN: data-race in __test_and_clear_bit_le / _find_next_zero_bit read-write to 0xffff88823ff0b0f0 of 8 bytes by task 27795 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+0x31/0x50 include/asm-generic/bitops/le.h:61 ext4_free_inode+0x3ec/0x810 fs/ext4/ialloc.c:316 ext4_evict_inode+0xb1e/0xdc0 fs/ext4/inode.c:303 evict+0x1aa/0x410 fs/inode.c:664 iput_final fs/inode.c:1775 [inline] iput+0x42c/0x5b0 fs/inode.c:1801 do_unlinkat+0x282/0x4c0 fs/namei.c:4389 __do_sys_unlink fs/namei.c:4430 [inline] __se_sys_unlink fs/namei.c:4428 [inline] __x64_sys_unlink+0x30/0x40 fs/namei.c:4428 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff88823ff0b0f0 of 8 bytes by task 5686 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+0xce0/0x2270 fs/ext4/ialloc.c:1064 ext4_symlink+0x242/0x590 fs/ext4/namei.c:3398 vfs_symlink+0xc2/0x1a0 fs/namei.c:4464 do_symlinkat+0xe3/0x340 fs/namei.c:4490 __do_sys_symlinkat fs/namei.c:4506 [inline] __se_sys_symlinkat fs/namei.c:4503 [inline] __x64_sys_symlinkat+0x62/0x70 fs/namei.c:4503 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0xdf83ffffffffffff -> 0xd383ffffffffffff Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 5686 Comm: syz-executor.4 Not tainted 6.7.0-rc1-syzkaller-00019-gc42d9eeef8e5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 ==================================================================