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qcacmn: Add null pointer check in qdf_dp_trace

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In hdd_tx_timeout(), null nbuf is passed to qdf_dp_trace(). This
results a null pointer dereference when getting data buffer.
Since data buffer is not mandory for qdf_dp_add_record(), add null
nbuf check in qdf_dp_trace().

Change-Id: If5fb4753d382d8f29bdf4d934a7910a28a7c76aa
CRs-Fixed: 2244543
This commit is contained in:
Zhang Qian 2018-05-21 11:24:04 +08:00 • committed by nshrivas
commit 3c724258f3
1 changed files with 2 additions and 1 deletions
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3
qdf/linux/src/qdf_trace.c
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@ -1970,7 +1970,8 @@ void qdf_dp_trace(qdf_nbuf_t nbuf, enum QDF_DP_TRACE_ID code, uint8_t pdev_id,
if (qdf_dp_enable_check(nbuf, code, dir) == false)
return;
qdf_dp_add_record(code, pdev_id, qdf_nbuf_data(nbuf), size, NULL, 0,
qdf_dp_add_record(code, pdev_id, nbuf ? qdf_nbuf_data(nbuf) : NULL,
size, NULL, 0,
(nbuf) ? QDF_NBUF_CB_DP_TRACE_PRINT(nbuf) : false);
}
qdf_export_symbol(qdf_dp_trace);