================================================================== BUG: KCSAN: data-race in put_pipe_info / wait_for_partner write to 0xffff888125f87d2c of 4 bytes by task 29551 on cpu 0: put_pipe_info+0x3d/0xe0 fs/pipe.c:688 fifo_open+0x342/0x6a0 fs/pipe.c:1196 do_dentry_open+0x529/0x850 fs/open.c:826 vfs_open+0x43/0x50 fs/open.c:949 do_open fs/namei.c:3374 [inline] path_openat+0x1787/0x1f20 fs/namei.c:3507 do_filp_open+0xe9/0x200 fs/namei.c:3534 do_sys_openat2+0xa3/0x250 fs/open.c:1204 do_sys_open fs/open.c:1220 [inline] __do_sys_creat fs/open.c:1294 [inline] __se_sys_creat fs/open.c:1288 [inline] __x64_sys_creat+0x62/0x80 fs/open.c:1288 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888125f87d2c of 4 bytes by task 29560 on cpu 1: pipe_lock_nested fs/pipe.c:65 [inline] pipe_lock fs/pipe.c:74 [inline] wait_for_partner+0xe0/0x1d0 fs/pipe.c:1063 fifo_open+0x555/0x6a0 fs/pipe.c:1151 do_dentry_open+0x529/0x850 fs/open.c:826 vfs_open+0x43/0x50 fs/open.c:949 do_open fs/namei.c:3374 [inline] path_openat+0x1787/0x1f20 fs/namei.c:3507 do_filp_open+0xe9/0x200 fs/namei.c:3534 do_sys_openat2+0xa3/0x250 fs/open.c:1204 do_sys_open fs/open.c:1220 [inline] __do_sys_open fs/open.c:1228 [inline] __se_sys_open fs/open.c:1224 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1224 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 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: 29560 Comm: syz-executor.5 Tainted: G W 5.14.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================