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BUG: KCSAN: data-race in pipe_lock / pipe_release

read-write to 0xffff88812966a564 of 4 bytes by task 5911 on cpu 0:
 put_pipe_info fs/pipe.c:797 [inline]
 pipe_release+0x16a/0x1d0 fs/pipe.c:827
 __fput+0x286/0x610 fs/file_table.c:512
 fput_close_sync+0xad/0x190 fs/file_table.c:618
 filp_close_sync+0x27/0x40 fs/open.c:1573
 __range_close fs/file.c:919 [inline]
 __do_sys_close_range fs/file.c:1003 [inline]
 __se_sys_close_range+0x915/0xa00 fs/file.c:954
 __x64_sys_close_range+0x43/0x50 fs/file.c:954
 x64_sys_call+0x2198/0x2550 arch/x86/include/generated/asm/syscalls_64.h:437
 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 0xffff88812966a564 of 4 bytes by task 5912 on cpu 1:
 pipe_lock+0x17/0x50 fs/pipe.c:90
 iter_file_splice_write+0x11f/0xa60 fs/splice.c:682
 do_splice_from fs/splice.c:936 [inline]
 do_splice+0x823/0xf80 fs/splice.c:1377
 __do_splice fs/splice.c:1459 [inline]
 __do_sys_splice fs/splice.c:1662 [inline]
 __se_sys_splice+0x26c/0x3a0 fs/splice.c:1644
 __x64_sys_splice+0x78/0x90 fs/splice.c:1644
 x64_sys_call+0x1797/0x2550 arch/x86/include/generated/asm/syscalls_64.h:276
 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: 0x00000002 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 5912 Comm: syz.4.634 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
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