jmb/hardened_malloc
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cgzones 2025-09-21 10:24:24 +00:00 • committed by GitHub
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7
README.md
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@ -159,8 +159,11 @@ line to the `/etc/ld.so.preload` configuration file:
The format of this configuration file is a whitespace-separated list, so it's The format of this configuration file is a whitespace-separated list, so it's
good practice to put each library on a separate line. good practice to put each library on a separate line.
On Debian systems `libhardened_malloc.so` should be installed into `/usr/lib/` For maximum compatibility `libhardened_malloc.so` can be installed into
to avoid preload failures caused by AppArmor profile restrictions. `/usr/lib/` to avoid preload failures caused by AppArmor profiles or systemd
ExecPaths= restrictions. Check for logs of the following format:
ERROR: ld.so: object '/usr/local/lib/libhardened_malloc.so' from /etc/ld.so.preload cannot be preloaded (failed to map segment from shared object): ignored.
Using the `LD_PRELOAD` environment variable to load it on a case-by-case basis Using the `LD_PRELOAD` environment variable to load it on a case-by-case basis
will not work when `AT_SECURE` is set such as with setuid binaries. It's also will not work when `AT_SECURE` is set such as with setuid binaries. It's also

2
androidtest/memtag/memtag_test.cc
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@ -44,7 +44,7 @@ void *set_pointer_tag(void *ptr, u8 tag) {
return (void *) (((uintptr_t) tag << 56) | (uintptr_t) untag_pointer(ptr)); return (void *) (((uintptr_t) tag << 56) | (uintptr_t) untag_pointer(ptr));
} }
// This test checks that slab slot allocation uses tag that is distint from tags of its neighbors // This test checks that slab slot allocation uses tag that is distinct from tags of its neighbors
// and from the tag of the previous allocation that used the same slot // and from the tag of the previous allocation that used the same slot
void tag_distinctness() { void tag_distinctness() {
// tag 0 is reserved // tag 0 is reserved

2
test/test_smc.py
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@ -98,7 +98,7 @@ class TestSimpleMemoryCorruption(unittest.TestCase):
self.assertEqual(stderr.decode("utf-8"), self.assertEqual(stderr.decode("utf-8"),
"fatal allocator error: invalid free\n") "fatal allocator error: invalid free\n")
def test_invalid_malloc_usable_size_small_quarantene(self): def test_invalid_malloc_usable_size_small_quarantine(self):
_stdout, stderr, returncode = self.run_test( _stdout, stderr, returncode = self.run_test(
"invalid_malloc_usable_size_small_quarantine") "invalid_malloc_usable_size_small_quarantine")
self.assertEqual(returncode, -6) self.assertEqual(returncode, -6)