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| author |   Eric Dumazet <edumazet@google.com> | 2021-12-09 23:44:21 -0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2021-12-10 06:38:26 -0800 |
| commit | 9ba74e6c9e9d0c5c1e5792a7111fc7d1a0589cb8 (patch) | |
| tree | 0984bfcc460de30d23f22d4230992964496199da /include/linux/seq_file_net.h | |
| parent | sh_eth: Use dev_err_probe() helper (diff) | |
| download | linux-rng-9ba74e6c9e9d0c5c1e5792a7111fc7d1a0589cb8.tar.xz linux-rng-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 <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux/seq_file_net.h')
0 files changed, 0 insertions, 0 deletions