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authorJens Axboe <axboe@kernel.dk>2023-02-24 09:54:57 -0700
committerJens Axboe <axboe@kernel.dk>2023-02-24 12:58:31 -0700
commit977bc87356107fb946fb4ff24f1e4c241b5043ec (patch)
treef600ef39029c1c97b4f2aaadd749bab8d8affdb7 /io_uring
parent57bebf807e2abcf87d96b9de1266104ee2d8fc2f (diff)
io_uring/rsrc: always initialize 'folio' to NULL
Smatch complains that: smatch warnings: io_uring/rsrc.c:1262 io_sqe_buffer_register() error: uninitialized symbol 'folio'. 'folio' may be used uninitialized, which can happen if we end up with a single page mapped. Ensure that we clear folio to NULL at the top so it's always set. Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <error27@gmail.com> Link: https://lore.kernel.org/r/202302241432.YML1CD5C-lkp@intel.com/ Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
-rw-r--r--io_uring/rsrc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c
index aab1bc6883e9..056f40946ff6 100644
--- a/io_uring/rsrc.c
+++ b/io_uring/rsrc.c
@@ -1210,7 +1210,7 @@ static int io_sqe_buffer_register(struct io_ring_ctx *ctx, struct iovec *iov,
unsigned long off;
size_t size;
int ret, nr_pages, i;
- struct folio *folio;
+ struct folio *folio = NULL;
*pimu = ctx->dummy_ubuf;
if (!iov->iov_base)