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| author |   Eric Dumazet <edumazet@google.com> | 2022-04-29 09:20:36 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2022-04-30 15:19:08 +0100 |
| commit | a9384a4c1d250cb40cebf50e41459426d160b08e (patch) | |
| tree | 26224d2aba035c4249666eeb6bd9317146976807 /include | |
| parent | net: igmp: respect RCU rules in ip_mc_source() and ip_mc_msfilter() (diff) | |
| download | linux-dev-a9384a4c1d250cb40cebf50e41459426d160b08e.tar.xz linux-dev-a9384a4c1d250cb40cebf50e41459426d160b08e.zip | |
mld: respect RCU rules in ip6_mc_source() and ip6_mc_msfilter()
Whenever RCU protected list replaces an object,
the pointer to the new object needs to be updated
_before_ the call to kfree_rcu() or call_rcu()
Also ip6_mc_msfilter() needs to update the pointer
before releasing the mc_lock mutex.
Note that linux-5.13 was supporting kfree_rcu(NULL, rcu),
so this fix does not need the conditional test I was
forced to use in the equivalent patch for IPv4.
Fixes: 882ba1f73c06 ("mld: convert ipv6_mc_socklist->sflist to RCU")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions