================================================================== BUG: KCSAN: data-race in fifo_open / wait_for_partner write to 0xffff88813e93996c of 4 bytes by task 4063 on cpu 0: put_pipe_info fs/pipe.c:702 [inline] fifo_open+0x302/0x680 fs/pipe.c:1210 do_dentry_open+0x52c/0x860 fs/open.c:822 vfs_open+0x43/0x50 fs/open.c:957 do_open fs/namei.c:3426 [inline] path_openat+0x17b8/0x1eb0 fs/namei.c:3559 do_filp_open+0x105/0x220 fs/namei.c:3586 do_sys_openat2+0xb5/0x2b0 fs/open.c:1212 do_sys_open fs/open.c:1228 [inline] __do_sys_creat fs/open.c:1304 [inline] __se_sys_creat fs/open.c:1298 [inline] __x64_sys_creat+0x62/0x80 fs/open.c:1298 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88813e93996c of 4 bytes by task 4032 on cpu 1: pipe_lock_nested fs/pipe.c:80 [inline] pipe_lock fs/pipe.c:89 [inline] wait_for_partner+0xe0/0x1d0 fs/pipe.c:1077 fifo_open+0x551/0x680 fs/pipe.c:1165 do_dentry_open+0x52c/0x860 fs/open.c:822 vfs_open+0x43/0x50 fs/open.c:957 do_open fs/namei.c:3426 [inline] path_openat+0x17b8/0x1eb0 fs/namei.c:3559 do_filp_open+0x105/0x220 fs/namei.c:3586 do_sys_openat2+0xb5/0x2b0 fs/open.c:1212 do_sys_open fs/open.c:1228 [inline] __do_sys_open fs/open.c:1236 [inline] __se_sys_open fs/open.c:1232 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1232 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000002 -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 4032 Comm: syz-executor.2 Not tainted 5.16.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================