ether: Add a KMSAN check for transmitted frames
This helps ensure that outbound packet data is initialized per KMSAN. Sponsored by: The FreeBSD Foundation
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@ -46,8 +46,9 @@
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mbuf.h>
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#include <sys/module.h>
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#include <sys/msan.h>
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#include <sys/proc.h>
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#include <sys/priv.h>
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#include <sys/random.h>
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@ -502,9 +503,13 @@ ether_output_frame(struct ifnet *ifp, struct mbuf *m)
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#endif
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/*
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* Queue message on interface, update output statistics if
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* successful, and start output if interface not yet active.
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* Queue message on interface, update output statistics if successful,
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* and start output if interface not yet active.
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*
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* If KMSAN is enabled, use it to verify that the data does not contain
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* any uninitialized bytes.
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*/
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kmsan_check_mbuf(m, "ether_output");
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return ((ifp->if_transmit)(ifp, m));
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}
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