mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
synced 2026-11-10 20:48:12 +00:00
cc54e0eeee
[ Upstream commitf4d0668b38] __io_fixed_fd_install() returns 0 on success for non-alloc mode (specific slot), not the slot index. io_pipe_fixed() used this return value directly as the slot index in fds[], which can cause the reported values returned via copy_to_user() to be incorrect, or the error path operating on the incorrect direct descriptor. Fix by computing the actual 0-based slot index (slot - 1) for specific slot mode, while preserving the existing behavior for auto-alloc mode where __io_fixed_fd_install() already returns the allocated index. Cc: stable@vger.kernel.org Fixes:53db8a71ec("io_uring: add support for IORING_OP_PIPE") Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org>
439 lines
10 KiB
439 lines
10 KiB