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Miller" References: Content-Language: en-US From: Fernando Fernandez Mancera In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Action: no action X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Result: default: False [-4.51 / 50.00]; BAYES_HAM(-3.00)[99.99%]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-0.998]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; RCVD_TLS_ALL(0.00)[]; FUZZY_RATELIMITED(0.00)[rspamd.com]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; DWL_DNSWL_BLOCKED(0.00)[suse.de:dkim]; DNSWL_BLOCKED(0.00)[2a07:de40:b281:104:10:150:64:97:from,2a07:de40:b281:106:10:150:64:167:received]; RCPT_COUNT_FIVE(0.00)[5]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim,suse.de:mid]; TO_DN_ALL(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; DKIM_TRACE(0.00)[suse.de:+] X-Rspamd-Queue-Id: BA03C5BDFA X-Spam-Flag: NO X-Spam-Score: -4.51 X-Spam-Level: On 3/1/26 10:49 AM, Hao Long wrote: > Hello, > > Recently I set up a strongSwan tunnel in AGGFRAG mode[1] in order to see > how it fragments large packets. > > Later I found out the receiver node will kernel panic when handling > large packets, I tested in different distro and both panic. > > Tested environment: > - Arch Linux 6.18.13-arch1-1 strongswan-6.0.4-2 > - Arch Linux 7.0.0-rc1-1-mainline strongswan-6.0.4-2 > - NixOS 6.18.13 strongswan-6.0.4 > > Step to reproduce: > 1. install strongSwan and create tunnel interface in vm1, see the > attachment init_env.sh > 2. do step1 in vm2, but remember to switch local_addrs and remote_addrs, > also the ip assignment > 3. run `ping -s 3333 10.0.1.2` in vm1, 10.0.1.2 is the ip from vm2 > 4. kernel panic in vm2 > I have reproduced this. I will send a patch a shortly so you can test it in your environment too. Thanks, Fernando. > I'm not familiar in C programming and kernel developing, so sorry I can't > provide a useful root case analyze and a fix. > > Regards, > Hao Long > > [1] https://docs.strongswan.org/docs/latest/features/iptfs.html >