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| author | Kuniyuki Iwashima <[email protected]> | 2024-04-30 01:58:13 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2024-05-02 01:37:07 +0000 |
| commit | bf4ea58874df3d43f7264709cec7fe320616552c (patch) | |
| tree | 54e09e532fed923864889afc954475987af31738 /net/dsa/dsa.c | |
| parent | net: Protect dev->name by seqlock. (diff) | |
| download | kernel-bf4ea58874df3d43f7264709cec7fe320616552c.tar.gz kernel-bf4ea58874df3d43f7264709cec7fe320616552c.zip | |
arp: Convert ioctl(SIOCGARP) to RCU.
ioctl(SIOCGARP) holds rtnl_lock() to get netdev by __dev_get_by_name()
and copy dev->name safely and calls neigh_lookup() later, which looks
up a neighbour entry under RCU.
Let's replace __dev_get_by_name() with dev_get_by_name_rcu() and strscpy()
with netdev_copy_name() to avoid locking rtnl_lock().
Signed-off-by: Kuniyuki Iwashima <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'net/dsa/dsa.c')
0 files changed, 0 insertions, 0 deletions