[PATCH][next] io_uring: fix incorrect check for kvmalloc failure

From: Colin King
Date: Mon Apr 26 2021 - 05:38:39 EST


From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Currently imu is being allocated but the kvmalloc failure is checking
imu->bvec instead of imu. Fix this by checking imu for null.

Addresses-Coverity: ("Array compared against 0")
Fixes: 41edf1a5ec96 ("io_uring: keep table of pointers to ubufs")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
fs/io_uring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 57a64c7e0e69..f4ec092c23f4 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -8269,7 +8269,7 @@ static int io_sqe_buffer_register(struct io_ring_ctx *ctx, struct iovec *iov,
goto done;

imu = kvmalloc(struct_size(imu, bvec, nr_pages), GFP_KERNEL);
- if (!imu->bvec)
+ if (!imu)
goto done;

ret = 0;
--
2.30.2