netdev - [PATH net 0/2] add drop reason when do fragment

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1761286996-39440-1-git-send-email-liyonglong@chinatelecom.cn>
Date: Fri, 24 Oct 2025 14:23:14 +0800
From: Yonglong Li <liyonglong@...natelecom.cn>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
	dsahern@...nel.org,
	edumazet@...gle.com,
	pabeni@...hat.com,
	kuba@...nel.org,
	horms@...nel.org,
	liyonglong@...natelecom.cn
Subject: [PATH net 0/2] add drop reason when do fragment

Add a new drop reason FRAG_FAILED to trace do fragment failed.
And use drop reasons PKT_TOO_BIG when pkt too big.

Reasons show up as:

perf record -e skb:kfree_skb -a; perf script

  swapper 0 [005] 154.086537: skb:kfree_skb: ... location=ip6_fragment reason: PKT_TOO_BIG
  swapper 0 [005] 154.086540: skb:kfree_skb: ... location=ip6_fragment reason: PKT_TOO_BIG
  swapper 0 [005] 154.086544: skb:kfree_skb: ... location=ip6_fragment reason: PKT_TOO_BIG

Yonglong Li (2):
  net: ip: add drop reasons when handling ip fragments
  net: ipv6: use drop reasons in ip6_fragment

 include/net/dropreason-core.h | 3 +++
 net/ipv4/ip_output.c          | 6 +++---
 net/ipv6/ip6_output.c         | 6 ++++--
 3 files changed, 10 insertions(+), 5 deletions(-)

-- 
1.8.3.1