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cgroup-util: Ignore kernel threads in cg_kill_items()

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Similar to the implementation of cgroup.kill in the kernel, let's
skip kernel threads in cg_kill_items() as trying to kill kernel
threads as an unprivileged process will fail with EPERM and doesn't
do anything when running privileged.
This commit is contained in:
Daan De Meyer 2024-07-30 11:53:32 +02:00
parent b56920e36c
commit 0fbb569de1
1 changed files with 6 additions and 0 deletions
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6
src/basic/cgroup-util.c
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@ -369,6 +369,12 @@ static int cg_kill_items(
if (set_get(s, PID_TO_PTR(pidref.pid)) == PID_TO_PTR(pidref.pid))
continue;
/* Ignore kernel threads to mimick the behavior of cgroup.kill. */
if (pidref_is_kernel_thread(&pidref) > 0) {
log_debug("Ignoring kernel thread with pid " PID_FMT " in cgroup '%s'", pidref.pid, path);
continue;
}
if (log_kill)
ret_log_kill = log_kill(&pidref, sig, userdata);