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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-01-05 17:51:36 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-01-05 17:51:36 -0800 |
| commit | 1686cc1a31f45a3fd090e5d0c6fce777422e13fa (patch) | |
| tree | ec4bac3bb19e47a1d81c30e7e35a0b5380c9e99f | |
| parent | 5c4a60831aa6d937cec9cf17aef8eb6c1851bfcd (diff) | |
| parent | 5f30b2e823484ce6a79f2b59901b6351c15effa6 (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching
Pull livepatch update from Jiri Kosina:
"Return value checking fixup in livepatching samples, from Nicholas Mc
Guire"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
livepatch: check kzalloc return values
| -rw-r--r-- | samples/livepatch/livepatch-shadow-fix1.c | 5 | ||||
| -rw-r--r-- | samples/livepatch/livepatch-shadow-mod.c | 4 |
2 files changed, 9 insertions, 0 deletions
diff --git a/samples/livepatch/livepatch-shadow-fix1.c b/samples/livepatch/livepatch-shadow-fix1.c index 49b13553eaae..e8f1bd6b29b1 100644 --- a/samples/livepatch/livepatch-shadow-fix1.c +++ b/samples/livepatch/livepatch-shadow-fix1.c @@ -89,6 +89,11 @@ struct dummy *livepatch_fix1_dummy_alloc(void) * pointer to handle resource release. */ leak = kzalloc(sizeof(int), GFP_KERNEL); + if (!leak) { + kfree(d); + return NULL; + } + klp_shadow_alloc(d, SV_LEAK, sizeof(leak), GFP_KERNEL, shadow_leak_ctor, leak); diff --git a/samples/livepatch/livepatch-shadow-mod.c b/samples/livepatch/livepatch-shadow-mod.c index 4c54b250332d..4aa8a88d3cd6 100644 --- a/samples/livepatch/livepatch-shadow-mod.c +++ b/samples/livepatch/livepatch-shadow-mod.c @@ -118,6 +118,10 @@ noinline struct dummy *dummy_alloc(void) /* Oops, forgot to save leak! */ leak = kzalloc(sizeof(int), GFP_KERNEL); + if (!leak) { + kfree(d); + return NULL; + } pr_info("%s: dummy @ %p, expires @ %lx\n", __func__, d, d->jiffies_expire); |