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GNU C Library master sources branch, master, updated. glibc-2.10-132-g6cbbaa5
- From: drepper at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 2 Jul 2009 10:31:48 -0000
- Subject: GNU C Library master sources branch, master, updated. glibc-2.10-132-g6cbbaa5
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http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=6cbbaa50aac809ad6e0692247876c82d58e466bf
commit 6cbbaa50aac809ad6e0692247876c82d58e466bf
Author: Ulrich Drepper <drepper@redhat.com>
Date: Thu Jul 2 03:30:55 2009 -0700
Fix possible race when freeing object in fast bin list.
diff --git a/ChangeLog b/ChangeLog
index 0c6c36f..4700e7d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2009-07-02 Ulrich Drepper <drepper@redhat.com>
+
+ * malloc/malloc.c [ATOMIC_FASTBINS] (_int_free): Add full barrier when
+ adding to fast bin list.
+
2009-07-01 Ulrich Drepper <drepper@redhat.com>
* nis/nss_nis/nis-network.c (_nss_nis_getnetbyaddr_r): Don't use
diff --git a/malloc/malloc.c b/malloc/malloc.c
index 516d401..70e4e58 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -4822,6 +4822,7 @@ _int_free(mstate av, mchunkptr p)
goto errout;
}
p->fd = fd = old;
+ atomic_full_barrier ();
}
while ((old = catomic_compare_and_exchange_val_acq (fb, p, fd)) != fd);
#else
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
malloc/malloc.c | 1 +
2 files changed, 6 insertions(+), 0 deletions(-)
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