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oci: check for valid PID before kill(pid, 0)

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check that the container has a valid pid before attempting to use
kill($PID, 0) on it.  If the PID==0, it means the container is already
stopped.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano
2023-01-09 20:59:30 +01:00
parent 1da081f289
commit 494db3e166
1 changed files with 4 additions and 0 deletions
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4
libpod/oci_conmon_common.go
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@ -429,6 +429,10 @@ func (r *ConmonOCIRuntime) StopContainer(ctr *Container, timeout uint, all bool)
}
if err := r.KillContainer(ctr, uint(unix.SIGKILL), all); err != nil {
// If the PID is 0, then the container is already stopped.
if ctr.state.PID == 0 {
return nil
}
// Again, check if the container is gone. If it is, exit cleanly.
if aliveErr := unix.Kill(ctr.state.PID, 0); errors.Is(aliveErr, unix.ESRCH) {
return nil