ipc: Fix ipc_msg_send() with payload already prepared#10717
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kv2019i merged 1 commit intothesofproject:mainfrom Apr 24, 2026
Merged
ipc: Fix ipc_msg_send() with payload already prepared#10717kv2019i merged 1 commit intothesofproject:mainfrom
kv2019i merged 1 commit intothesofproject:mainfrom
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Pull request overview
Fixes ipc_msg_send() so callers can pre-populate msg->tx_data/tx_size and safely call ipc_msg_send(msg, NULL, ...) without triggering a copy attempt from a NULL pointer.
Changes:
- Guard the payload copy in
ipc_msg_send()withdata != NULLto avoidmemcpy_s()fromNULL. - Preserve the “no-copy” path for cases where the payload is already prepared in
msg->tx_data.
tmleman
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Changes since v1:
Note: this causes only firmware crash in debug build as assert() is NOP otherwise. |
singalsu
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kv2019i
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Apr 23, 2026
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Typo on commit, good otherwise.
If the msg->tx_size/data have been prepared by caller and it calls the function with NULL as data: ipc_msg_send(msg, NULL, false); then we try to copy from NULL to the msg->tx_data because msg->tx_data != data is true. The callers could be fixed as well, but the ipc_msg_send() and ipc_msg_send_direct() should handle this. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
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If the msg->tx_size/data have been prepared by caller and it calls the function with NULL as data: ipc_msg_send(msg, NULL, false);
then we try to copy from NULL to the msg->tx_data because msg->tx_data != data is true.
The callers could be fixed as well, but the ipc_msg_send() should handle this.