* [PATCH 1/1] io_uring/region: fix error codes after failed vmap
@ 2024-11-17 0:38 Pavel Begunkov
2024-11-17 16:01 ` Jens Axboe
0 siblings, 1 reply; 2+ messages in thread
From: Pavel Begunkov @ 2024-11-17 0:38 UTC (permalink / raw)
To: io-uring; +Cc: asml.silence
io_create_region() jumps after a vmap failure without setting the return
code, it could be 0 or just uninitialised.
Fixes: dfbbfbf191878 ("io_uring: introduce concept of memory regions")
Signed-off-by: Pavel Begunkov <[email protected]>
---
io_uring/memmap.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/io_uring/memmap.c b/io_uring/memmap.c
index bbd9569a0120..6e6ee79ba94f 100644
--- a/io_uring/memmap.c
+++ b/io_uring/memmap.c
@@ -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);
- if (!vptr)
+ if (!vptr) {
+ ret = -ENOMEM;
goto out_free;
+ }
mr->pages = pages;
mr->vmap_ptr = vptr;
--
2.46.0
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2024-11-17 0:38 [PATCH 1/1] io_uring/region: fix error codes after failed vmap Pavel Begunkov
2024-11-17 16:01 ` Jens Axboe
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