================================================================== BUG: KCSAN: data-race in fifo_open / wait_for_partner read-write to 0xffff88813d83e42c of 4 bytes by task 14060 on cpu 0: put_pipe_info fs/pipe.c:704 [inline] fifo_open+0x2a2/0x5d0 fs/pipe.c:1214 do_dentry_open+0x521/0x850 fs/open.c:848 vfs_open+0x43/0x50 fs/open.c:981 do_open fs/namei.c:3520 [inline] path_openat+0x16cf/0x1b30 fs/namei.c:3653 do_filp_open+0x105/0x220 fs/namei.c:3680 do_sys_openat2+0xb5/0x2a0 fs/open.c:1278 do_sys_open fs/open.c:1294 [inline] __do_sys_open fs/open.c:1302 [inline] __se_sys_open fs/open.c:1298 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1298 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff88813d83e42c of 4 bytes by task 14072 on cpu 1: pipe_lock_nested fs/pipe.c:81 [inline] pipe_lock fs/pipe.c:90 [inline] wait_for_partner+0xe0/0x1d0 fs/pipe.c:1081 fifo_open+0x47f/0x5d0 fs/pipe.c:1148 do_dentry_open+0x521/0x850 fs/open.c:848 vfs_open+0x43/0x50 fs/open.c:981 do_open fs/namei.c:3520 [inline] path_openat+0x16cf/0x1b30 fs/namei.c:3653 do_filp_open+0x105/0x220 fs/namei.c:3680 do_sys_openat2+0xb5/0x2a0 fs/open.c:1278 do_sys_open fs/open.c:1294 [inline] __do_sys_open fs/open.c:1302 [inline] __se_sys_open fs/open.c:1298 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1298 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x00000002 -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 14072 Comm: syz-executor.1 Not tainted 5.19.0-rc7-syzkaller-00190-g70664fc10c0d-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 ==================================================================