From: Dan Carpenter <dan.carpenter@oracle.com> To: Mauro Carvalho Chehab <mchehab@kernel.org>, Alan Cox <alan@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, linux-media@vger.kernel.org, devel@driverdev.osuosl.org, kernel-janitors@vger.kernel.org Subject: [PATCH] Staging: atomisp: fix locking in alloc_user_pages() Date: Fri, 17 Mar 2017 23:42:46 +0300 [thread overview] Message-ID: <20170317204246.GB16505@mwanda> (raw) We call this function with the lock held and should also return with the lock held as well. This one error path is not-consistent because we should return without the lock held. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> diff --git a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm_bo.c b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm_bo.c index fd3bd5c48672..d1a609d25f18 100644 --- a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm_bo.c +++ b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm_bo.c @@ -1012,6 +1012,7 @@ static int alloc_user_pages(struct hmm_buffer_object *bo, dev_err(atomisp_dev, "find_vma failed\n"); atomisp_kernel_free(bo->page_obj); atomisp_kernel_free(pages); + mutex_lock(&bo->mutex); return -EFAULT; } mutex_lock(&bo->mutex);
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com> To: Mauro Carvalho Chehab <mchehab@kernel.org>, Alan Cox <alan@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, linux-media@vger.kernel.org, devel@driverdev.osuosl.org, kernel-janitors@vger.kernel.org Subject: [PATCH] Staging: atomisp: fix locking in alloc_user_pages() Date: Fri, 17 Mar 2017 20:42:46 +0000 [thread overview] Message-ID: <20170317204246.GB16505@mwanda> (raw) We call this function with the lock held and should also return with the lock held as well. This one error path is not-consistent because we should return without the lock held. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> diff --git a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm_bo.c b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm_bo.c index fd3bd5c48672..d1a609d25f18 100644 --- a/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm_bo.c +++ b/drivers/staging/media/atomisp/pci/atomisp2/hmm/hmm_bo.c @@ -1012,6 +1012,7 @@ static int alloc_user_pages(struct hmm_buffer_object *bo, dev_err(atomisp_dev, "find_vma failed\n"); atomisp_kernel_free(bo->page_obj); atomisp_kernel_free(pages); + mutex_lock(&bo->mutex); return -EFAULT; } mutex_lock(&bo->mutex);
next reply other threads:[~2017-03-17 20:46 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-03-17 20:42 Dan Carpenter [this message] 2017-03-17 20:42 ` [PATCH] Staging: atomisp: fix locking in alloc_user_pages() Dan Carpenter
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20170317204246.GB16505@mwanda \ --to=dan.carpenter@oracle.com \ --cc=alan@linux.intel.com \ --cc=devel@driverdev.osuosl.org \ --cc=gregkh@linuxfoundation.org \ --cc=kernel-janitors@vger.kernel.org \ --cc=linux-media@vger.kernel.org \ --cc=mchehab@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.