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Bug #56191 Possible race condition in apc_sma_malloc() ?
Submitted: 2004-09-15 11:23 UTC Modified: 2004-09-16 00:52 UTC
From: swen dot thuemmler at telefonica dot de Assigned: rasmus (profile)
Status: Closed Package: APC (PECL)
PHP Version: Irrelevant OS: Solaris 2.8
Private report: No CVE-ID: None
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From: swen dot thuemmler at telefonica dot de
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 [2004-09-15 11:23 UTC] swen dot thuemmler at telefonica dot de
I'm not sure, but shouldnt the UNLOCK come after the assignment?

        if (off != -1) {
            void* p = (void *)(((char *)(sma_shmaddrs[i])) + off);
--->            UNLOCK(sma_lock);
--->            sma_lastseg = i;
            return p;



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 [2004-09-16 00:52 UTC]
I suppose there could be a race in a multithreaded environment.  I have flipped those around.
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