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BUG: KCSAN: data-race in fifo_open / wait_for_partner

read-write to 0xffff88813974e4ec of 4 bytes by task 23260 on cpu 1:
 fifo_open+0xa0/0x5e0 fs/pipe.c:1104
 do_dentry_open+0x5b3/0x930 fs/open.c:920
 vfs_open+0x47/0x50 fs/open.c:1051
 do_open fs/namei.c:3560 [inline]
 path_openat+0x17e6/0x1d00 fs/namei.c:3715
 do_filp_open+0xf6/0x200 fs/namei.c:3742
 do_sys_openat2+0xb5/0x2a0 fs/open.c:1348
 do_sys_open fs/open.c:1364 [inline]
 __do_sys_creat fs/open.c:1440 [inline]
 __se_sys_creat fs/open.c:1434 [inline]
 __x64_sys_creat+0x66/0x90 fs/open.c:1434
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff88813974e4ec of 4 bytes by task 23258 on cpu 0:
 pipe_unlock fs/pipe.c:96 [inline]
 wait_for_partner+0xc6/0x1d0 fs/pipe.c:1078
 fifo_open+0x4cc/0x5e0 fs/pipe.c:1169
 do_dentry_open+0x5b3/0x930 fs/open.c:920
 vfs_open+0x47/0x50 fs/open.c:1051
 do_open fs/namei.c:3560 [inline]
 path_openat+0x17e6/0x1d00 fs/namei.c:3715
 do_filp_open+0xf6/0x200 fs/namei.c:3742
 file_open_name+0xf6/0x120 fs/open.c:1293
 acct_on kernel/acct.c:226 [inline]
 __do_sys_acct kernel/acct.c:305 [inline]
 __se_sys_acct+0xea/0x410 kernel/acct.c:292
 __x64_sys_acct+0x1f/0x30 kernel/acct.c:292
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00000001 -> 0x00000002

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 23258 Comm: syz-executor.3 Tainted: G        W          6.3.0-rc7-syzkaller-00152-g2af3e53a4dc0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
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