Messages in this thread Patch in this message | | | Date | Mon, 5 Jun 2017 10:10:23 -0700 | From | tip-bot for Jan Kiszka <> | Subject | [tip:efi/core] efi/capsule: Fix return code on failing kmap/vmap |
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Commit-ID: fb153dc53f0eb8e8ad6a69f773e44c2d12daa5d0 Gitweb: http://git.kernel.org/tip/fb153dc53f0eb8e8ad6a69f773e44c2d12daa5d0 Author: Jan Kiszka <jan.kiszka@siemens.com> AuthorDate: Fri, 2 Jun 2017 13:51:56 +0000 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Mon, 5 Jun 2017 17:50:37 +0200
efi/capsule: Fix return code on failing kmap/vmap
If kmap or vmap fail, it means we ran out of memory. There are no user-provided addressed involved that would justify EFAULT.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/20170602135207.21708-3-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org> --- drivers/firmware/efi/capsule-loader.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/efi/capsule-loader.c b/drivers/firmware/efi/capsule-loader.c index 9ae6c11..91e91f7 100644 --- a/drivers/firmware/efi/capsule-loader.c +++ b/drivers/firmware/efi/capsule-loader.c @@ -113,7 +113,7 @@ static ssize_t efi_capsule_submit_update(struct capsule_info *cap_info) VM_MAP, PAGE_KERNEL); if (!cap_hdr_temp) { pr_debug("%s: vmap() failed\n", __func__); - return -EFAULT; + return -ENOMEM; } ret = efi_capsule_update(cap_hdr_temp, cap_info->pages); @@ -185,7 +185,7 @@ static ssize_t efi_capsule_write(struct file *file, const char __user *buff, kbuff = kmap(page); if (!kbuff) { pr_debug("%s: kmap() failed\n", __func__); - ret = -EFAULT; + ret = -ENOMEM; goto failed; } kbuff += PAGE_SIZE - cap_info->page_bytes_remain;
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