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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-03-06 13:47:56 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-03-06 13:47:56 -0800 |
| commit | 0d9b9c1674fa7f86175a41805061908022e394b8 (patch) | |
| tree | 5846b107c5c10932e59d4dbf92456c69af856c70 /kernel/livepatch/core.c | |
| parent | Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal (diff) | |
| parent | livepatch: fix RCU usage in klp_find_external_symbol() (diff) | |
| download | linux-dev-0d9b9c1674fa7f86175a41805061908022e394b8.tar.xz linux-dev-0d9b9c1674fa7f86175a41805061908022e394b8.zip | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching
Pull livepatching fix from Jiri Kosina:
"Fix an RCU unlock misplacement in live patching infrastructure, from
Peter Zijlstra"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
livepatch: fix RCU usage in klp_find_external_symbol()
Diffstat (limited to 'kernel/livepatch/core.c')
| -rw-r--r-- | kernel/livepatch/core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c index 782172f073c5..01ca08804f51 100644 --- a/kernel/livepatch/core.c +++ b/kernel/livepatch/core.c @@ -248,11 +248,12 @@ static int klp_find_external_symbol(struct module *pmod, const char *name, /* first, check if it's an exported symbol */ preempt_disable(); sym = find_symbol(name, NULL, NULL, true, true); - preempt_enable(); if (sym) { *addr = sym->value; + preempt_enable(); return 0; } + preempt_enable(); /* otherwise check if it's in another .o within the patch module */ return klp_find_object_symbol(pmod->name, name, addr); |