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author | Pavel Emelyanov <xemul@openvz.org> | 2007-11-26 20:23:31 +0800 |
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committer | Herbert Xu <herbert@gondor.apana.org.au> | 2007-11-26 20:23:31 +0800 |
commit | 218ad12f42e0b6207105cde8fd13017d1ed449e4 (patch) | |
tree | 2f79b20a20ccfeeea1f44b82d9ec2ef0eb2758de /kernel/sched_debug.c | |
parent | 8053fc3de720e1027d690f892ff7d7c1737fdd9d (diff) | |
download | linux-218ad12f42e0b6207105cde8fd13017d1ed449e4.tar.gz |
[IPV4]: Fix memory leak in inet_hashtables.h when NUMA is on
The inet_ehash_locks_alloc() looks like this:
#ifdef CONFIG_NUMA
if (size > PAGE_SIZE)
x = vmalloc(...);
else
#endif
x = kmalloc(...);
Unlike it, the inet_ehash_locks_alloc() looks like this:
#ifdef CONFIG_NUMA
if (size > PAGE_SIZE)
vfree(x);
else
#else
kfree(x);
#endif
The error is obvious - if the NUMA is on and the size
is less than the PAGE_SIZE we leak the pointer (kfree is
inside the #else branch).
Compiler doesn't warn us because after the kfree(x) there's
a "x = NULL" assignment, so here's another (minor?) bug: we
don't set x to NULL under certain circumstances.
Boring explanation, I know... Patch explains it better.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'kernel/sched_debug.c')
0 files changed, 0 insertions, 0 deletions