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avutil/tx: add null pointer check after av_mallocz

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Fix CID: 1497863
there will get null pointer in attempt to initialize each if alloc memory failed.

Signed-off-by: Steven Liu <liuqi05@kuaishou.com>
This commit is contained in:
Steven Liu 2022-01-28 10:08:18 +08:00 committed by Lynne
parent f0044d886f
commit 9887ec3e9b
1 changed files with 6 additions and 1 deletions
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7
libavutil/tx.c
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@ -565,8 +565,13 @@ av_cold int ff_tx_init_subtx(AVTXContext *s, enum AVTXType type,
print_cd_info(cd_matches[i].cd, cd_matches[i].prio, 1);
}
if (!s->sub)
if (!s->sub) {
s->sub = sub = av_mallocz(TX_MAX_SUB*sizeof(*sub));
if (!sub) {
ret = AVERROR(ENOMEM);
goto end;
}
}
/* Attempt to initialize each */
for (int i = 0; i < nb_cd_matches; i++) {