KCSAN: data-race in opipe_prep / pipe

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in opipe_prep / pipe_write (3) fs				1	448d	448d	0/26	auto-obsoleted due to no activity on 2023/04/06 01:17
upstream	KCSAN: data-race in opipe_prep / pipe_write fs				1	971d	971d	0/26	auto-closed as invalid on 2021/09/25 17:57

================================================================== BUG: KCSAN: data-race in opipe_prep / pipe_write write to 0xffff88814c8597d0 of 4 bytes by task 26450 on cpu 1: pipe_write+0x458/0xda0 fs/pipe.c:516 call_write_iter include/linux/fs.h:2074 [inline] new_sync_write fs/read_write.c:503 [inline] vfs_write+0x7f5/0x950 fs/read_write.c:590 ksys_write+0xd9/0x190 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:652 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 0xffff88814c8597d0 of 4 bytes by task 26455 on cpu 0: opipe_prep+0x26/0x200 fs/splice.c:1407 splice_pipe_to_pipe fs/splice.c:1454 [inline] do_splice+0x30e/0xde0 fs/splice.c:1054 __do_splice fs/splice.c:1144 [inline] __do_sys_splice fs/splice.c:1350 [inline] __se_sys_splice+0x2bd/0x3a0 fs/splice.c:1332 __x64_sys_splice+0x74/0x80 fs/splice.c:1332 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: 0x00000000 -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 26455 Comm: syz-executor.4 Not tainted 5.17.0-rc2-syzkaller-00167-gdcb85f85fa6f-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================