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BUG: KCSAN: data-race in autofs_wait / autofs_wait

read to 0xffffffff86e016b0 of 4 bytes by task 10660 on cpu 0:
 autofs_wait+0x8b1/0xbd0 fs/autofs/waitq.c:386
 autofs_mount_wait+0xc2/0x100 fs/autofs/root.c:256
 autofs_d_automount+0x3fd/0x570 fs/autofs/root.c:410
 follow_automount fs/namei.c:1565 [inline]
 __traverse_mounts+0x256/0x420 fs/namei.c:1618
 traverse_mounts fs/namei.c:1647 [inline]
 handle_mounts fs/namei.c:1749 [inline]
 step_into_slowpath+0x2d5/0x4c0 fs/namei.c:2104
 step_into fs/namei.c:2152 [inline]
 walk_component fs/namei.c:2288 [inline]
 lookup_last fs/namei.c:2789 [inline]
 path_lookupat+0x2eb/0x4c0 fs/namei.c:2813
 filename_lookup+0x18f/0x390 fs/namei.c:2842
 vfs_statx+0x96/0x170 fs/stat.c:353
 vfs_fstatat fs/stat.c:373 [inline]
 vfs_lstat include/linux/fs.h:3221 [inline]
 __do_sys_newlstat fs/stat.c:524 [inline]
 __se_sys_newlstat+0x66/0x3f0 fs/stat.c:518
 __x64_sys_newlstat+0x31/0x40 fs/stat.c:518
 x64_sys_call+0x1b8c/0x3020 arch/x86/include/generated/asm/syscalls_64.h:7
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x136/0x3c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

write to 0xffffffff86e016b0 of 4 bytes by task 10658 on cpu 1:
 autofs_wait+0x8dc/0xbd0 fs/autofs/waitq.c:-1
 autofs_mount_wait+0xc2/0x100 fs/autofs/root.c:256
 autofs_d_automount+0x3fd/0x570 fs/autofs/root.c:410
 follow_automount fs/namei.c:1565 [inline]
 __traverse_mounts+0x256/0x420 fs/namei.c:1618
 traverse_mounts fs/namei.c:1647 [inline]
 handle_mounts fs/namei.c:1749 [inline]
 step_into_slowpath+0x2d5/0x4c0 fs/namei.c:2104
 step_into fs/namei.c:2152 [inline]
 walk_component fs/namei.c:2288 [inline]
 lookup_last fs/namei.c:2789 [inline]
 path_lookupat+0x2eb/0x4c0 fs/namei.c:2813
 filename_lookup+0x18f/0x390 fs/namei.c:2842
 vfs_statx+0x96/0x170 fs/stat.c:353
 vfs_fstatat fs/stat.c:373 [inline]
 vfs_lstat include/linux/fs.h:3221 [inline]
 __do_sys_newlstat fs/stat.c:524 [inline]
 __se_sys_newlstat+0x66/0x3f0 fs/stat.c:518
 __x64_sys_newlstat+0x31/0x40 fs/stat.c:518
 x64_sys_call+0x1b8c/0x3020 arch/x86/include/generated/asm/syscalls_64.h:7
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x136/0x3c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000fd8 -> 0x00000fd9

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 10658 Comm: syz.2.2090 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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