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From: | Maximilian Mayr |
Subject: | [lwip-devel] [bug #63938] On apprupt tcp interrupten the pcb->next list points to itself |
Date: | Fri, 17 Mar 2023 09:28:43 -0400 (EDT) |
URL: <https://savannah.nongnu.org/bugs/?63938> Summary: On apprupt tcp interrupten the pcb->next list points to itself Group: lwIP - A Lightweight TCP/IP stack Submitter: mmay Submitted: Fri 17 Mar 2023 01:28:41 PM UTC Category: IPv4 Severity: 3 - Normal Item Group: Crash Error Status: None Privacy: Public Assigned to: None Open/Closed: Open Discussion Lock: Any Planned Release: None lwIP version: 2.1.3 _______________________________________________________ Follow-up Comments: ------------------------------------------------------- Date: Fri 17 Mar 2023 01:28:41 PM UTC By: Maximilian Mayr <mmay> When stopping an active ipv4/tcp connection via "hard stop" in our case Qt-Application debelopment crash. The pcb list can be corrupt when the next connection starts. This happens in file tcp_in.c at line 271. prev->next = pcb->next; the list can point directly to itself or over a few elements. I attach my configuration. And a few screenshots of the environment at the error. This happens always and is easily reproduceable. _______________________________________________________ File Attachments: ------------------------------------------------------- Date: Fri 17 Mar 2023 01:28:41 PM UTC Name: lwipopts.h Size: 3KiB By: mmay <http://savannah.nongnu.org/bugs/download.php?file_id=54501> ------------------------------------------------------- Date: Fri 17 Mar 2023 01:28:41 PM UTC Name: Unbenannt.PNG Size: 7KiB By: mmay <http://savannah.nongnu.org/bugs/download.php?file_id=54502> ------------------------------------------------------- Date: Fri 17 Mar 2023 01:28:41 PM UTC Name: Unbenannt1.PNG Size: 52KiB By: mmay <http://savannah.nongnu.org/bugs/download.php?file_id=54503> _______________________________________________________ Reply to this item at: <https://savannah.nongnu.org/bugs/?63938> _______________________________________________ Message sent via Savannah https://savannah.nongnu.org/
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