[PATCH net-next v3 1/9] netconsole: clean up released targets dropped before the cleanup worker
From: Breno Leitao <leitao@debian.org>
Date: 2026-07-10 11:54:23
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Subsystem:
netconsole, networking drivers, the rest · Maintainers:
Breno Leitao, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
drop_netconsole_target() might eventually tear down a target that netconsole_netdev_event() had moved to target_cleanup_list but that netconsole_process_cleanups_core() had not processed yet. Always cleanup devices that eventually have a device attached to the target, independent of the state. Signed-off-by: Breno Leitao <leitao@debian.org> --- drivers/net/netconsole.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index c1812a98365b7..a939daa07cf9d 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c@@ -1481,15 +1481,15 @@ static void drop_netconsole_target(struct config_group *group, mutex_lock(&target_cleanup_list_lock); spin_lock_irqsave(&target_list_lock, flags); - /* A STATE_DEACTIVATED target may have been moved to - * target_cleanup_list by netconsole_netdev_event() but not yet - * processed by netconsole_process_cleanups_core(). Unlinking it below - * hides it from the cleanup worker, so this path has to clean it up - * itself. Record that the target still owns a netpoll before the - * state is downgraded. + /* A target moved to target_cleanup_list by netconsole_netdev_event() + * but not yet processed still owns a netpoll; unlinking it below hides + * it from the cleanup worker, so this path must tear it down itself. + * This covers NETDEV_UNREGISTER (STATE_DEACTIVATED) and + * NETDEV_RELEASE / NETDEV_JOIN (STATE_DISABLED); key off nt->np.dev, + * which stays set until the netpoll is cleaned up. */ needs_cleanup = nt->state == STATE_ENABLED || - nt->state == STATE_DEACTIVATED; + nt->state == STATE_DEACTIVATED || nt->np.dev; /* Disable deactivated target to prevent races between resume attempt * and target removal. */
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2.53.0-Meta