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Fix possible race when freeing object in fast bin list.

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This commit is contained in:
Ulrich Drepper
2009-07-02 03:30:55 -07:00
parent 2fd0cd8b52
commit 6cbbaa50aa
2 changed files with 6 additions and 0 deletions
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malloc/malloc.c
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@@ -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