Date: Thu, 12 Mar 2026 12:42:35 -0700 From: Gleb Smirnoff <glebius@freebsd.org> To: mhorne@freebsd.org, emaste@freebsd.org, asomers@freebsd.org Cc: pouria@freebsd.org, dev-ci@freebsd.org Subject: Re: FreeBSD-main-amd64-test - Build #28023 - Still Failing Message-ID: <abMXK4XRty-JCgPg@cell.glebi.us> In-Reply-To: <866971841.9.1773341283948@jenkins.ci.freebsd.org> References: <222100065.1.1773335030157@jenkins.ci.freebsd.org> <866971841.9.1773341283948@jenkins.ci.freebsd.org>
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On Thu, Mar 12, 2026 at 06:48:03PM +0000, jenkins-admin@FreeBSD.org wrote: j> panic: CURVNET_SET at /usr/src/sys/netinet6/nd6_nbr.c:1680 nd6_queue_timer() curvnet=0 vnet=0xfffff8000d121a40 j> cpuid = 1 j> time = 1773341283 j> KDB: stack backtrace: j> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe008bc5dc00 j> vpanic() at vpanic+0x136/frame 0xfffffe008bc5dd30 j> panic() at panic+0x43/frame 0xfffffe008bc5dd90 j> nd6_queue_timer() at nd6_queue_timer+0x207/frame 0xfffffe008bc5de10 j> softclock_call_cc() at softclock_call_cc+0x19b/frame 0xfffffe008bc5dec0 j> softclock_thread() at softclock_thread+0xc6/frame 0xfffffe008bc5def0 j> fork_exit() at fork_exit+0x82/frame 0xfffffe008bc5df30 j> fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe008bc5df30 j> --- trap 0, rip = 0, rsp = 0, rbp = 0 --- j> KDB: enter: panic Some other callout had returned without clearing td_vnet, e.g. calling CURVNET_RESTORE(). I don't think either of our recent commits caused that, neither I think that Pouria's recent changes to nd6_queue_timer() did. The easiest way to catch that would be to add assertion into softclock_call_cc() after the callout returned. Who runs the CI? What is the easiest way to reproduce this with the assertion without committing it to main? -- Gleb Smirnoffhome | help
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