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Check for job before releasing

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ZSTDMT_freeCCtx calls ZSTDMT_releaseAllJobResources, but ZSTDMT_releaseAllJobResources may be called when ZSTDMT_freeCCtx is called when initialization fails, resulting in a NULL pointer dereference.
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Rose
2025-06-24 14:05:08 -04:00
parent 3c3b8274c5
commit 4efbd56749
1 changed files with 14 additions and 12 deletions
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2
lib/compress/zstdmt_compress.c
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@@ -1008,6 +1008,7 @@ static void ZSTDMT_releaseAllJobResources(ZSTDMT_CCtx* mtctx)
{ {
unsigned jobID; unsigned jobID;
DEBUGLOG(3, "ZSTDMT_releaseAllJobResources"); DEBUGLOG(3, "ZSTDMT_releaseAllJobResources");
if (mtctx->jobs) {
for (jobID=0; jobID <= mtctx->jobIDMask; jobID++) { for (jobID=0; jobID <= mtctx->jobIDMask; jobID++) {
/* Copy the mutex/cond out */ /* Copy the mutex/cond out */
ZSTD_pthread_mutex_t const mutex = mtctx->jobs[jobID].job_mutex; ZSTD_pthread_mutex_t const mutex = mtctx->jobs[jobID].job_mutex;
@@ -1021,6 +1022,7 @@ static void ZSTDMT_releaseAllJobResources(ZSTDMT_CCtx* mtctx)
mtctx->jobs[jobID].job_mutex = mutex; mtctx->jobs[jobID].job_mutex = mutex;
mtctx->jobs[jobID].job_cond = cond; mtctx->jobs[jobID].job_cond = cond;
} }
}
mtctx->inBuff.buffer = g_nullBuffer; mtctx->inBuff.buffer = g_nullBuffer;
mtctx->inBuff.filled = 0; mtctx->inBuff.filled = 0;
mtctx->allJobsCompleted = 1; mtctx->allJobsCompleted = 1;