Date: Thu, 01 Feb 2024 10:30:40 +0000 From: bugzilla-noreply@freebsd.org To: transport@FreeBSD.org Subject: [Bug 276761] panic: sbsndptr_noadv: sb_mb is NULL Message-ID: <bug-276761-38102-pjS67KXGMa@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-276761-38102@https.bugs.freebsd.org/bugzilla/> References: <bug-276761-38102@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D276761 Richard Scheffenegger <rscheff@freebsd.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |glebius@FreeBSD.org --- Comment #2 from Richard Scheffenegger <rscheff@freebsd.org> --- Daniel, If you can deterministically reproduce this, that this is probably what Gleb was looking for. It is likely that this is an instance where the retransmit timer is active = on a closed (or closing) session, where the socket buffers were already freed... The BT certainly looks like this - the open question is, why not all outstanding timers get cancelled when a session is closing - one codepath s= eems to be missing the relevant cleanups. (This appears to have been exposed by my recent change of not discarding the SACK scoreboard on an RTO - SACK retransmissions do re-arm the RTO timer.) If you are looking for a quick workaround, we have one, but would really appreciate your help into understanding the actual root cause (codepath whe= re session closure is not properly cleaning up). --=20 You are receiving this mail because: You are the assignee for the bug.=
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