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9ba74e6c9e
We have 100+ syzbot reports about netns being dismantled too soon, still unresolved as of today. We think a missing get_net() or an extra put_net() is the root cause. In order to find the bug(s), and be able to spot future ones, this patch adds CONFIG_NET_NS_REFCNT_TRACKER and new helpers to precisely pair all put_net() with corresponding get_net(). To use these helpers, each data structure owning a refcount should also use a "netns_tracker" to pair the get and put. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
19 lines
424 B
C
19 lines
424 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __NET_NET_TRACKERS_H
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#define __NET_NET_TRACKERS_H
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#include <linux/ref_tracker.h>
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#ifdef CONFIG_NET_DEV_REFCNT_TRACKER
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typedef struct ref_tracker *netdevice_tracker;
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#else
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typedef struct {} netdevice_tracker;
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#endif
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#ifdef CONFIG_NET_NS_REFCNT_TRACKER
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typedef struct ref_tracker *netns_tracker;
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#else
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typedef struct {} netns_tracker;
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#endif
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#endif /* __NET_NET_TRACKERS_H */
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