Date: Thu, 5 Aug 2021 12:52:14 -0400 From: Andrew Gallatin <gallatin@cs.duke.edu> To: Ed Maste <emaste@freebsd.org>, Andrew Gallatin <gallatin@freebsd.org> Cc: src-committers <src-committers@freebsd.org>, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org Subject: Re: git: 98215005b747 - main - ktls: start a thread to keep the 16k ktls buffer zone populated Message-ID: <e7d30e44-0d34-2943-545f-94fcad93c791@cs.duke.edu> In-Reply-To: <CAPyFy2BN2sv0JzwEnwecVveHUYfo=8ayX0oCkC02iKXxKo2HzQ@mail.gmail.com> References: <202108051422.175EMBpP006556@gitrepo.freebsd.org> <CAPyFy2BN2sv0JzwEnwecVveHUYfo=8ayX0oCkC02iKXxKo2HzQ@mail.gmail.com>
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On 8/5/21 11:59 AM, Ed Maste wrote: > On Thu, 5 Aug 2021 at 10:22, Andrew Gallatin <gallatin@freebsd.org> wrote: >> >> The branch main has been updated by gallatin: >> >> URL: https://urldefense.com/v3/__https://cgit.FreeBSD.org/src/commit/?id=98215005b747fef67f44794ca64abd473b98bade__;!!OToaGQ!6H22s_lcYmkhuynvYHpkyGHe143j9dOq8CYazaDqtTi9kyapeu9DMyf0Tvo0tDDCVw$ >> >> commit 98215005b747fef67f44794ca64abd473b98bade >> Author: Andrew Gallatin <gallatin@FreeBSD.org> >> AuthorDate: 2021-08-05 14:15:09 +0000 >> Commit: Andrew Gallatin <gallatin@FreeBSD.org> >> CommitDate: 2021-08-05 14:19:12 +0000 >> >> ktls: start a thread to keep the 16k ktls buffer zone populated > > My Cirrus-CI boot smoke test is now failing with: > > Starting KTLS alloc thread for domain 0 > panic: sleeping without a lock > cpuid = 0 > time = 1 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0000b20ae0 > vpanic() at vpanic+0x187/frame 0xfffffe0000b20b40 > panic() at panic+0x43/frame 0xfffffe0000b20ba0 > _sleep() at _sleep+0x484/frame 0xfffffe0000b20c40 > ktls_alloc_thread() at ktls_alloc_thread+0x1c4/frame 0xfffffe0000b20cf0 > fork_exit() at fork_exit+0x80/frame 0xfffffe0000b20d30 > fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0000b20d30 > --- trap 0, rip = 0, rsp = 0, rbp = 0 --- > KDB: enter: panic > [ thread pid 2 tid 100027 ] > Stopped at kdb_enter+0x37: movq $0,0x127877e(%rip) > db> qemu-system-x86_64: terminating on signal 15 from pid 32579 (timeout) > Did not boot successfully, see /tmp/ci-qemu-test-boot.log > I'd thought that I'd tested this with INVARIANTS, but I guess I was wrong. The assert is failing because I'm sleeping forever (sbt == 0). I don't understand the point of the assert, but I've reproduced the panic and am testing a workaround. Drew
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