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Assert that the entropy source category provided by a caller submitting

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entropy is valid, as an invalid source will cause dereferencing of an
array of queues to an incorrect memory location.
This commit is contained in:
Robert Watson 2004-10-12 14:57:14 +00:00
parent a9befd40dd
commit f5c3a74502
1 changed files with 6 additions and 0 deletions
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6
sys/dev/random/randomdev_soft.c
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@ -301,6 +301,12 @@ random_harvest_internal(u_int64_t somecounter, const void *entropy,
{
struct harvest *event;
KASSERT(origin == RANDOM_START || origin == RANDOM_WRITE ||
origin == RANDOM_KEYBOARD || origin == RANDOM_MOUSE ||
origin == RANDOM_NET || origin == RANDOM_INTERRUPT ||
origin == RANDOM_PURE || origin == ENTROPYSOURCE,
("random_harvest_internal: origin %d invalid\n", origin));
/* Lockless read to avoid lock operations if fifo is full. */
if (harvestfifo[origin].count >= RANDOM_FIFO_MAX)
return;