================================================================== BUG: KCSAN: data-race in put_pipe_info / wait_for_partner write to 0xffff8881241ab2ac of 4 bytes by task 6777 on cpu 1: put_pipe_info+0x3d/0xe0 fs/pipe.c:688 fifo_open+0x342/0x6a0 fs/pipe.c:1196 do_dentry_open+0x53e/0x830 fs/open.c:826 vfs_open+0x43/0x50 fs/open.c:940 do_open fs/namei.c:3367 [inline] path_openat+0x184e/0x20b0 fs/namei.c:3500 do_filp_open+0xd9/0x1f0 fs/namei.c:3527 do_sys_openat2+0xa3/0x250 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_open fs/open.c:1211 [inline] __se_sys_open fs/open.c:1207 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1207 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff8881241ab2ac of 4 bytes by task 6793 on cpu 0: 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+0x503/0x6a0 fs/pipe.c:1130 do_dentry_open+0x53e/0x830 fs/open.c:826 vfs_open+0x43/0x50 fs/open.c:940 do_open fs/namei.c:3367 [inline] path_openat+0x184e/0x20b0 fs/namei.c:3500 do_filp_open+0xd9/0x1f0 fs/namei.c:3527 do_sys_openat2+0xa3/0x250 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_open fs/open.c:1211 [inline] __se_sys_open fs/open.c:1207 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1207 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 6793 Comm: syz-executor.1 Not tainted 5.12.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================