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| author |   Jakub Kicinski <kuba@kernel.org> | 2023-05-16 20:41:12 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-05-16 20:46:30 -0700 |
| commit | e7480a44d7c4ce4691fa6bcdb0318f0d81fe4b12 (patch) | |
| tree | 7c51ce4a3cd82cf5fb82ab178fb8546ffb2b5548 /net/ipv6/reassembly.c | |
| parent | Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next (diff) | |
| download | wireguard-linux-e7480a44d7c4ce4691fa6bcdb0318f0d81fe4b12.tar.xz wireguard-linux-e7480a44d7c4ce4691fa6bcdb0318f0d81fe4b12.zip | |
Revert "net: Remove low_thresh in ip defrag"
This reverts commit b2cbac9b9b28730e9e53be20b6cdf979d3b9f27e.
We have multiple reports of obvious breakage from this patch.
Reported-by: Ido Schimmel <idosch@idosch.org>
Link: https://lore.kernel.org/all/ZGIRWjNcfqI8yY8W@shredder/
Link: https://lore.kernel.org/all/CADJHv_sDK=0RrMA2FTZQV5fw7UQ+qY=HG21Wu5qb0V9vvx5w6A@mail.gmail.com/
Reported-by: syzbot+a5e719ac7c268e414c95@syzkaller.appspotmail.com
Reported-by: syzbot+a03fd670838d927d9cd8@syzkaller.appspotmail.com
Fixes: b2cbac9b9b28 ("net: Remove low_thresh in ip defrag")
Link: https://lore.kernel.org/r/20230517034112.1261835-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | net/ipv6/reassembly.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c index eb8373c25675..5bc8a28e67f9 100644 --- a/net/ipv6/reassembly.c +++ b/net/ipv6/reassembly.c @@ -416,7 +416,7 @@ static const struct inet6_protocol frag_protocol = { }; #ifdef CONFIG_SYSCTL -static unsigned long ip6_frags_low_thresh_unused = IPV6_FRAG_LOW_THRESH; + static struct ctl_table ip6_frags_ns_ctl_table[] = { { .procname = "ip6frag_high_thresh", @@ -465,9 +465,9 @@ static int __net_init ip6_frags_ns_sysctl_register(struct net *net) } table[0].data = &net->ipv6.fqdir->high_thresh; - table[0].extra1 = &ip6_frags_low_thresh_unused; - table[1].data = &ip6_frags_low_thresh_unused; - table[1].extra2 = &net->ipv6.fqdir->high_thresh; + table[0].extra1 = &net->ipv6.fqdir->low_thresh; + table[1].data = &net->ipv6.fqdir->low_thresh; + table[1].extra2 = &net->ipv6.fqdir->high_thresh; table[2].data = &net->ipv6.fqdir->timeout; hdr = register_net_sysctl(net, "net/ipv6", table); @@ -536,6 +536,7 @@ static int __net_init ipv6_frags_init_net(struct net *net) return res; net->ipv6.fqdir->high_thresh = IPV6_FRAG_HIGH_THRESH; + net->ipv6.fqdir->low_thresh = IPV6_FRAG_LOW_THRESH; net->ipv6.fqdir->timeout = IPV6_FRAG_TIMEOUT; res = ip6_frags_ns_sysctl_register(net); |