================================================================== BUG: KCSAN: data-race in pipe_wait / put_pipe_info write to 0xffff8880bb136b90 of 4 bytes by task 26862 on cpu 0: put_pipe_info+0x4d/0xb0 fs/pipe.c:665 fifo_open+0x14a/0x6b0 fs/pipe.c:1112 do_dentry_open+0x301/0x970 fs/open.c:797 vfs_open+0x62/0x80 fs/open.c:914 do_last fs/namei.c:3420 [inline] path_openat+0xf9f/0x3580 fs/namei.c:3537 do_filp_open+0x11e/0x1b0 fs/namei.c:3567 do_sys_open+0x3b3/0x4f0 fs/open.c:1097 __do_sys_open fs/open.c:1115 [inline] __se_sys_open fs/open.c:1110 [inline] __x64_sys_open+0x55/0x70 fs/open.c:1110 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8880bb136b90 of 4 bytes by task 26863 on cpu 1: pipe_lock_nested fs/pipe.c:64 [inline] pipe_lock fs/pipe.c:73 [inline] pipe_wait+0xd7/0x140 fs/pipe.c:121 wait_for_partner+0x65/0xc0 fs/pipe.c:979 fifo_open+0x641/0x6b0 fs/pipe.c:1046 do_dentry_open+0x301/0x970 fs/open.c:797 vfs_open+0x62/0x80 fs/open.c:914 do_last fs/namei.c:3420 [inline] path_openat+0xf9f/0x3580 fs/namei.c:3537 do_filp_open+0x11e/0x1b0 fs/namei.c:3567 do_sys_open+0x3b3/0x4f0 fs/open.c:1097 __do_sys_open fs/open.c:1115 [inline] __se_sys_open fs/open.c:1110 [inline] __x64_sys_open+0x55/0x70 fs/open.c:1110 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 26863 Comm: syz-executor.2 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================