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BUG: KCSAN: data-race in autofs_wait / autofs_wait

write to 0xffffffff870034b0 of 4 bytes by task 1861 on cpu 0:
 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
 __do_sys_file_setattr fs/file_attr.c:470 [inline]
 __se_sys_file_setattr+0x2c7/0x400 fs/file_attr.c:427
 __x64_sys_file_setattr+0x67/0x80 fs/file_attr.c:427
 x64_sys_call+0xe89/0x2550 arch/x86/include/generated/asm/syscalls_64.h:470
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffffffff870034b0 of 4 bytes by task 1896 on cpu 1:
 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
 __do_sys_file_setattr fs/file_attr.c:470 [inline]
 __se_sys_file_setattr+0x2c7/0x400 fs/file_attr.c:427
 __x64_sys_file_setattr+0x67/0x80 fs/file_attr.c:427
 x64_sys_call+0xe89/0x2550 arch/x86/include/generated/asm/syscalls_64.h:470
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00002427 -> 0x00002428

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 1896 Comm: syz.5.6828 Tainted: G        W           syzkaller #0 PREEMPT(lazy) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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