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Fix a deadlock when removing pods

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The infra container would try to remove the pod, despite the pod
already being in the process of being removed - oops. Add a check
to ensure we don't try and remove the pod when called by the
`podman pod rm` command.

Also, wire up noLockPod - it wasn't previously wired in, which is
concerning, and could be related?

Finally, make a few minor fixes to un-break lint.

Signed-off-by: Matthew Heon <matthew.heon@pm.me>
This commit is contained in:
Matthew Heon
2023-05-05 13:57:44 -04:00
parent 8cb5d39d43
commit ef1a22cdea
3 changed files with 12 additions and 6 deletions
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12
libpod/runtime_ctr.go
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@ -4,6 +4,7 @@ import (
"context"
"errors"
"fmt"
"io/fs"
"os"
"path"
"path/filepath"
@ -690,8 +691,10 @@ func (r *Runtime) removeContainer(ctx context.Context, c *Container, force, remo
retErr = fmt.Errorf("container %s and pod %s share lock ID %d: %w", c.ID(), pod.ID(), c.config.LockID, define.ErrWillDeadlock)
return
}
pod.lock.Lock()
defer pod.lock.Unlock()
if !noLockPod {
pod.lock.Lock()
defer pod.lock.Unlock()
}
if err := pod.updatePod(); err != nil {
retErr = err
return
@ -763,7 +766,7 @@ func (r *Runtime) removeContainer(ctx context.Context, c *Container, force, remo
removedPods[depPod.ID()] = nil
}
}
if serviceForPod || c.config.IsInfra {
if (serviceForPod || c.config.IsInfra) && !removePod {
// We're going to remove the pod we are a part of.
// This will get rid of us as well, so we can just return
// immediately after.
@ -946,7 +949,7 @@ func (r *Runtime) removeContainer(ctx context.Context, c *Container, force, remo
removedCtrs[c.ID()] = nil
// Deallocate the container's lock
if err := c.lock.Free(); err != nil {
if err := c.lock.Free(); err != nil && !errors.Is(err, fs.ErrNotExist) {
reportErrorf("freeing lock for container %s: %w", c.ID(), err)
}
@ -978,6 +981,7 @@ func (r *Runtime) removeContainer(ctx context.Context, c *Container, force, remo
}
}
//nolint:nakedret
return
}