umh: fix memory leak on execve failure
If a UMH process created by fork_usermode_blob() fails to execute, a pair of struct file allocated by umh_pipe_setup() will leak. Under normal conditions, the caller (like bpfilter) needs to manage the lifetime of the UMH and its two pipes. But when fork_usermode_blob() fails, the caller doesn't really have a way to know what needs to be done. It seems better to do the cleanup ourselves in this case. Fixes: 449325b5 ("umh: introduce fork_usermode_blob() helper") Signed-off-by:Vincent Minet <v.minet@criteo.com> Signed-off-by:
Jakub Kicinski <kuba@kernel.org>
parent
14d8f748
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