================================================================== BUG: KCSAN: data-race in __d_instantiate / step_into read-write to 0xffff888104622a80 of 4 bytes by task 3254 on cpu 0: __d_instantiate+0x2d5/0x3c0 fs/dcache.c:1864 d_instantiate+0x59/0x80 fs/dcache.c:1889 shmem_symlink+0x36a/0x3a0 mm/shmem.c:3700 vfs_symlink+0xca/0x1d0 fs/namei.c:4568 do_symlinkat+0xe3/0x350 fs/namei.c:4594 __do_sys_symlink fs/namei.c:4615 [inline] __se_sys_symlink fs/namei.c:4613 [inline] __x64_sys_symlink+0x50/0x60 fs/namei.c:4613 x64_sys_call+0x2819/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:89 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 0xffff888104622a80 of 4 bytes by task 2961 on cpu 1: __follow_mount_rcu fs/namei.c:1511 [inline] handle_mounts fs/namei.c:1562 [inline] step_into+0xe7/0x810 fs/namei.c:1877 walk_component+0x169/0x230 fs/namei.c:2045 lookup_last fs/namei.c:2542 [inline] path_lookupat+0x10a/0x2b0 fs/namei.c:2566 filename_lookup+0x127/0x300 fs/namei.c:2595 do_readlinkat+0x89/0x210 fs/stat.c:537 __do_sys_readlink fs/stat.c:574 [inline] __se_sys_readlink fs/stat.c:571 [inline] __x64_sys_readlink+0x47/0x60 fs/stat.c:571 x64_sys_call+0x13c3/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:90 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 value changed: 0x00000008 -> 0x00600008 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 2961 Comm: udevd Not tainted 6.11.0-rc2-syzkaller-00042-gcf6d429eb656 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 ==================================================================