core: fix null pointer dereference #19757
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Area: core
benpicco
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Type: bug
core/msg.c
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| if (target == NULL) { | ||
| DEBUG("msg_reply_int(): target thread %d does not exist\n", m->sender_pid); | ||
| return -1; | ||
| } | ||
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Hmm, this looks to me like it can only trigger when in violation with the API. E.g. msg_reply_int() must make sure that the thread to reply to does exists (e.g. in an app where no thread ever exits, this is trivial).
Adding an assert() here with a comment that msg_reply_int() can only be used to reply to existing threads could help debugging, though.
@kaspar030 Could we deprecate all the msg*_ist() functions? IMO apps should migrate to msg_post() for IRQ to thread communication anyway.
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I force-pushed my branch. But the update is not shown here... |
Check return values of following functions for null: - thread_get - thread_get_unchecked
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bors merge |
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Check return values of following functions for null:
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