diff options
| author | Nirjhar Roy <nirjhar@linux.ibm.com> | 2024-10-18 23:16:01 +0530 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-11-14 22:49:19 -0800 |
| commit | 811808d365398680b628d2b88aafeba77c88691a (patch) | |
| tree | 26026a66991f95ef51e606bc4ab09e02f5a19562 /include/linux/prandom.h | |
| parent | f364cdeb38938f9d03061682b8ff3779dd1730e5 (diff) | |
mm/kfence: add a new kunit test test_use_after_free_read_nofault()
Faults from copy_from_kernel_nofault() need to be handled by fixup table
and should not be handled by kfence. Otherwise while reading /proc/kcore
which uses copy_from_kernel_nofault(), kfence can generate false
negatives. This can happen when /proc/kcore ends up reading an unmapped
address from kfence pool.
Let's add a testcase to cover this case.
Link: https://lkml.kernel.org/r/210e561f7845697a32de44b643393890f180069f.1729272697.git.ritesh.list@gmail.com
Signed-off-by: Nirjhar Roy <nirjhar@linux.ibm.com>
Co-developed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Tested-by: Marco Elver <elver@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/prandom.h')
0 files changed, 0 insertions, 0 deletions