| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
Make sure allocations from kmem_cache_alloc_bulk() and
kmem_cache_free_bulk() are properly initialized.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Alexander Potapenko <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Laura Abbott <[email protected]>
Cc: Thibaut Sautereau <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
|
kmalloc() shouldn't sleep while in RCU critical section, therefore use
GFP_ATOMIC instead of GFP_KERNEL.
The bug was spotted by the 0day kernel testing robot.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 7e659650cbda ("lib: introduce test_meminit module")
Signed-off-by: Alexander Potapenko <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Reported-by: kernel test robot <[email protected]>
Cc: Kees Cook <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
|
Fix the following issues in test_meminit.c:
- |size| in fill_with_garbage_skip() should be signed so that it
doesn't overflow if it's not aligned on sizeof(*p);
- fill_with_garbage_skip() should actually skip |skip| bytes;
- do_kmem_cache_size() should deallocate memory in the RCU case.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 7e659650cbda ("lib: introduce test_meminit module")
Fixes: 94e8988d91c7 ("lib/test_meminit.c: fix -Wmaybe-uninitialized false positive")
Signed-off-by: Alexander Potapenko <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Kees Cook <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
|
The conditional logic is too complicated for the compiler to fully
comprehend:
lib/test_meminit.c: In function 'test_meminit_init':
lib/test_meminit.c:236:5: error: 'buf_copy' may be used uninitialized in this function [-Werror=maybe-uninitialized]
kfree(buf_copy);
^~~~~~~~~~~~~~~
lib/test_meminit.c:201:14: note: 'buf_copy' was declared here
Simplify it by splitting out the non-rcu section.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: af734ee6ec85 ("lib: introduce test_meminit module")
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Alexander Potapenko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
|
Add tests for heap and pagealloc initialization. These can be used to
check init_on_alloc and init_on_free implementations as well as other
approaches to initialization.
Expected test output in the case the kernel provides heap initialization
(e.g. when running with either init_on_alloc=1 or init_on_free=1):
test_meminit: all 10 tests in test_pages passed
test_meminit: all 40 tests in test_kvmalloc passed
test_meminit: all 60 tests in test_kmemcache passed
test_meminit: all 10 tests in test_rcu_persistent passed
test_meminit: all 120 tests passed!
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Alexander Potapenko <[email protected]>
Acked-by: Kees Cook <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Nick Desaulniers <[email protected]>
Cc: Kostya Serebryany <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Sandeep Patil <[email protected]>
Cc: Laura Abbott <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: Marco Elver <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|