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lib: sbi: sse_event_get() may return NULL

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sse_event_get() may return NULL. We should not dereference the return value
in sbi_sse_exit() without checking.

Fixes: c8cdf01d8f ("lib: sbi: Add support for Supervisor Software Events extension")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Heinrich Schuchardt
2024-04-08 09:29:04 +02:00
committed by Anup Patel
parent 68bc031a76
commit 37e1544a86
1 changed files with 1 additions and 1 deletions
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2
lib/sbi/sbi_sse.c
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@@ -1119,7 +1119,7 @@ void sbi_sse_exit(struct sbi_scratch *scratch)
for (i = 0; i < EVENT_COUNT; i++) {
e = sse_event_get(supported_events[i]);
if (e->attrs.hartid != current_hartid())
if (!e || e->attrs.hartid != current_hartid())
continue;
if (sse_event_state(e) > SBI_SSE_STATE_REGISTERED) {