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| author | Nick Kralevich <nnk@google.com> | 2012-07-17 09:28:13 -0700 |
|---|---|---|
| committer | Nick Kralevich <nnk@google.com> | 2012-07-17 09:59:19 -0700 |
| commit | 2e2afadd535ad3a92246fd3482f39a9174d814e9 (patch) | |
| tree | 84445dcb2f3f6b3e7f28ced7a8db7b10688d2af8 | |
| parent | 02637312a6c22755df2469fa1fa078a93db7ad7a (diff) | |
| download | external_libnfc-nxp-2e2afadd535ad3a92246fd3482f39a9174d814e9.zip external_libnfc-nxp-2e2afadd535ad3a92246fd3482f39a9174d814e9.tar.gz external_libnfc-nxp-2e2afadd535ad3a92246fd3482f39a9174d814e9.tar.bz2 | |
phFriNfc_OvrHal: fix memcpy overlap
Don't use the API workaround when
OvrHal->TranceiveInfo.sRecvData.buffer == pRecvdata->buffer.
When memcpy overlap detection is enabled, this causes the NFC
process to crash and burn. memcpy is undefined when src=dest.
Bug: 6826770
Change-Id: Iebc8f82a4f86d560e764cef2229a7f86fa642783
| -rw-r--r-- | src/phFriNfc_OvrHal.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/phFriNfc_OvrHal.c b/src/phFriNfc_OvrHal.c index 539210e..9efff94 100644 --- a/src/phFriNfc_OvrHal.c +++ b/src/phFriNfc_OvrHal.c @@ -323,7 +323,10 @@ static void phFriNfc_OvrHal_CB_Transceive(void *context, if(NULL != pRecvdata && OvrHal->TranceiveInfo.sRecvData.buffer != NULL && pRecvdata->buffer != NULL) { /* Work-around for the NFCIP Tranceive API */ - memcpy(OvrHal->TranceiveInfo.sRecvData.buffer, pRecvdata->buffer, pRecvdata->length); + if (OvrHal->TranceiveInfo.sRecvData.buffer != pRecvdata->buffer) + { + memcpy(OvrHal->TranceiveInfo.sRecvData.buffer, pRecvdata->buffer, pRecvdata->length); + } if (OvrHal->pndef_recv_length != NULL) { *OvrHal->pndef_recv_length = (uint16_t) pRecvdata->length; |