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| author | Eric Dumazet <[email protected]> | 2021-12-10 07:44:21 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2021-12-10 14:38:26 +0000 |
| commit | 9ba74e6c9e9d0c5c1e5792a7111fc7d1a0589cb8 (patch) | |
| tree | 0984bfcc460de30d23f22d4230992964496199da /fs/proc/proc_net.c | |
| parent | sh_eth: Use dev_err_probe() helper (diff) | |
| download | kernel-9ba74e6c9e9d0c5c1e5792a7111fc7d1a0589cb8.tar.gz kernel-9ba74e6c9e9d0c5c1e5792a7111fc7d1a0589cb8.zip | |
net: add networking namespace refcount tracker
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 <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'fs/proc/proc_net.c')
0 files changed, 0 insertions, 0 deletions