syzbot

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BUG: KCSAN: data-race in pipe_release / pipe_wait_readable

read-write to 0xffff8881337e136c of 4 bytes by task 12081 on cpu 1:
 put_pipe_info fs/pipe.c:712 [inline]
 pipe_release+0x164/0x1c0 fs/pipe.c:742
 __fput+0x2c2/0x660 fs/file_table.c:422
 __fput_sync+0x44/0x60 fs/file_table.c:507
 __do_sys_close fs/open.c:1555 [inline]
 __se_sys_close+0x101/0x1b0 fs/open.c:1540
 __x64_sys_close+0x1f/0x30 fs/open.c:1540
 x64_sys_call+0x25f1/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:4
 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 0xffff8881337e136c of 4 bytes by task 12082 on cpu 0:
 pipe_lock fs/pipe.c:91 [inline]
 pipe_wait_readable+0x1ec/0x240 fs/pipe.c:1061
 splice_from_pipe_next+0x24f/0x390 fs/splice.c:548
 __splice_from_pipe+0xb0/0x4b0 fs/splice.c:609
 vmsplice_to_user fs/splice.c:1524 [inline]
 __do_sys_vmsplice fs/splice.c:1626 [inline]
 __se_sys_vmsplice+0x265/0xdc0 fs/splice.c:1598
 __x64_sys_vmsplice+0x55/0x70 fs/splice.c:1598
 x64_sys_call+0xb5f/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:279
 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: 0x00000002 -> 0x00000001

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 12082 Comm: syz-executor.0 Not tainted 6.10.0-rc1-syzkaller-00021-ge0cce98fe279 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
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