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| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2021-03-30 09:58:38 -0400 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2021-03-30 09:58:38 -0400 |
| commit | 59300b36f85f254260c81d9dd09195fa49eb0f98 (patch) | |
| tree | a02466a8f75a624be15ce48ec686cab9d387782b /kernel/trace/trace.c | |
| parent | 83b62687a05205847d627f29126a8fee3c644335 (diff) | |
| download | lwn-59300b36f85f254260c81d9dd09195fa49eb0f98.tar.gz lwn-59300b36f85f254260c81d9dd09195fa49eb0f98.zip | |
ftrace: Check if pages were allocated before calling free_pages()
It is possible that on error pg->size can be zero when getting its order,
which would return a -1 value. It is dangerous to pass in an order of -1
to free_pages(). Check if order is greater than or equal to zero before
calling free_pages().
Link: https://lore.kernel.org/lkml/20210330093916.432697c7@gandalf.local.home/
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace.c')
0 files changed, 0 insertions, 0 deletions