Thread (3 messages) flat view 3 messages, 3 authors, 2022-02-15

Re: [PATCH v2] mctp: fix use after free

From: Jeremy Kerr <jk@codeconstruct.com.au>
Date: 2022-02-15 02:26:31
Also in: lkml, llvm

Hi Tom,
Clang static analysis reports this problem
route.c:425:4: warning: Use of memory after it is freed
  trace_mctp_key_acquire(key);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
When mctp_key_add() fails, key is freed but then is later
used in trace_mctp_key_acquire().  Add an else statement
to use the key only when mctp_key_add() is successful.

Fixes: 4f9e1ba6de45 ("mctp: Add tracepoints for tag/key handling")
Signed-off-by: Tom Rix <trix@redhat.com>
---
v2: change the Fixes: line
Super, thanks!

Acked-off-by: Jeremy Kerr [off-list ref]

Cheers,


Jeremy
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