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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-07 03:27:14 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-07 03:27:14 +0300 |
commit | 285767604576148fc1be7fcd112e4a90eb0d6ad2 (patch) | |
tree | b4c611689f95e1a2ba0fe7b6407e05469251fc2f /drivers/reset | |
parent | 5eb6eed7e0fe880dc8de8da203cc888716bbf196 (diff) | |
parent | 0ed2dd03b94b7b7f66e23f25073b5385d0416589 (diff) |
Merge tag 'overflow-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull overflow updates from Kees Cook:
"This adds the new overflow checking helpers and adds them to the
2-factor argument allocators. And this adds the saturating size
helpers and does a treewide replacement for the struct_size() usage.
Additionally this adds the overflow testing modules to make sure
everything works.
I'm still working on the treewide replacements for allocators with
"simple" multiplied arguments:
*alloc(a * b, ...) -> *alloc_array(a, b, ...)
and
*zalloc(a * b, ...) -> *calloc(a, b, ...)
as well as the more complex cases, but that's separable from this
portion of the series. I expect to have the rest sent before -rc1
closes; there are a lot of messy cases to clean up.
Summary:
- Introduce arithmetic overflow test helper functions (Rasmus)
- Use overflow helpers in 2-factor allocators (Kees, Rasmus)
- Introduce overflow test module (Rasmus, Kees)
- Introduce saturating size helper functions (Matthew, Kees)
- Treewide use of struct_size() for allocators (Kees)"
* tag 'overflow-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
treewide: Use struct_size() for devm_kmalloc() and friends
treewide: Use struct_size() for vmalloc()-family
treewide: Use struct_size() for kmalloc()-family
device: Use overflow helpers for devm_kmalloc()
mm: Use overflow helpers in kvmalloc()
mm: Use overflow helpers in kmalloc_array*()
test_overflow: Add memory allocation overflow tests
overflow.h: Add allocation size calculation helpers
test_overflow: Report test failures
test_overflow: macrofy some more, do more tests for free
lib: add runtime test of check_*_overflow functions
compiler.h: enable builtin overflow checkers and add fallback code
Diffstat (limited to 'drivers/reset')
-rw-r--r-- | drivers/reset/core.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/reset/core.c b/drivers/reset/core.c index 6488292e129c..225e34c56b94 100644 --- a/drivers/reset/core.c +++ b/drivers/reset/core.c @@ -730,8 +730,7 @@ of_reset_control_array_get(struct device_node *np, bool shared, bool optional) if (num < 0) return optional ? NULL : ERR_PTR(num); - resets = kzalloc(sizeof(*resets) + sizeof(resets->rstc[0]) * num, - GFP_KERNEL); + resets = kzalloc(struct_size(resets, rstc, num), GFP_KERNEL); if (!resets) return ERR_PTR(-ENOMEM); |