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| author | Maxim Kuvyrkov <maxim@kugelworks.com> | 2013-12-24 09:44:50 +1300 |
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| committer | Maxim Kuvyrkov <maxim@kugelworks.com> | 2013-12-24 09:44:50 +1300 |
| commit | 362b47fe09ca9a928d444c7e2f7992f7f61bfc3e (patch) | |
| tree | 6279f6a26cf21a076aeee89081d4cc350ed8dc74 /ChangeLog | |
| parent | b9bcbbcbe7afa94442d335811d4a1c1e0c0a1daf (diff) | |
| download | glibc-362b47fe09ca9a928d444c7e2f7992f7f61bfc3e.tar.gz glibc-362b47fe09ca9a928d444c7e2f7992f7f61bfc3e.tar.xz glibc-362b47fe09ca9a928d444c7e2f7992f7f61bfc3e.zip | |
Fix race in free() of fastbin chunk: BZ #15073
Perform sanity check only if we have_lock. Due to lockless nature of fastbins we need to be careful derefencing pointers to fastbin entries (chunksize(old) in this case) in multithreaded environments. The fix is to add have_lock to the if-condition checks. The rest of the patch only makes code more readable. * malloc/malloc.c (_int_free): Perform sanity check only if we have_lock.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 667b3f17a0..f3ead2e762 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2013-12-24 Maxim Kuvyrkov <maxim@kugelworks.com> + Ondřej Bílka <neleai@seznam.cz> + + [BZ #15073] + * malloc/malloc.c (_int_free): Perform sanity check only if we + have_lock. + 2013-12-23 Ondřej Bílka <neleai@seznam.cz> [BZ #12986] |