Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-21 19:41:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

io_uring/region: fix error codes after failed vmap

Browse Source 
io_create_region() jumps after a vmap failure without setting the return
code, it could be 0 or just uninitialised.

Fixes: dfbbfbf191 ("io_uring: introduce concept of memory regions")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/0abac19dbf81c061cffaa9534a2471ed5460ad3e.1731803848.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2024-11-17 00:38:33 +00:00 committed by Jens Axboe
parent d617b3147d
commit a652958888
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
io_uring/memmap.c
View File

@ -247,8 +247,10 @@ int io_create_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr,
} }
vptr = vmap(pages, nr_pages, VM_MAP, PAGE_KERNEL); vptr = vmap(pages, nr_pages, VM_MAP, PAGE_KERNEL);
if (!vptr) if (!vptr) {
ret = -ENOMEM;
goto out_free; goto out_free;
}
mr->pages = pages; mr->pages = pages;
mr->vmap_ptr = vptr; mr->vmap_ptr = vptr;