From nobody Fri Apr 1 20:33:15 2022 X-Original-To: freebsd-net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 2FE121A5A95A for ; Fri, 1 Apr 2022 20:33:23 +0000 (UTC) (envelope-from hps@selasky.org) Received: from mail.turbocat.net (turbocat.net [88.99.82.50]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4KVX1Z1Wbfz3mQ0; Fri, 1 Apr 2022 20:33:22 +0000 (UTC) (envelope-from hps@selasky.org) Received: from [10.36.2.165] (unknown [178.17.145.105]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.turbocat.net (Postfix) with ESMTPSA id 47B752601C8; Fri, 1 Apr 2022 22:33:15 +0200 (CEST) Message-ID: <23673db5-5798-5c06-c04c-7c680ebe41d4@selasky.org> Date: Fri, 1 Apr 2022 22:33:15 +0200 List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: epoch callback panic Content-Language: en-US To: Peter Holm , freebsd-net References: From: Hans Petter Selasky In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4KVX1Z1Wbfz3mQ0 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of hps@selasky.org designates 88.99.82.50 as permitted sender) smtp.mailfrom=hps@selasky.org X-Spamd-Result: default: False [-2.38 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+a:mail.turbocat.net]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[selasky.org]; NEURAL_HAM_LONG(-1.00)[-0.998]; NEURAL_HAM_MEDIUM(-0.08)[-0.083]; TO_DN_ALL(0.00)[]; NEURAL_HAM_SHORT(-0.99)[-0.995]; RCPT_COUNT_TWO(0.00)[2]; MLMMJ_DEST(0.00)[freebsd-net]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:88.99.0.0/16, country:DE]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] X-ThisMailContainsUnwantedMimeParts: N On 4/1/22 19:07, Peter Holm wrote: > markj@ asked me to post this one: > > panic: rw lock 0xfffff801bccb1410 not unlocked > cpuid = 4 > time = 1648770125 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00e48a3d10 > vpanic() at vpanic+0x17f/frame 0xfffffe00e48a3d60 > panic() at panic+0x43/frame 0xfffffe00e48a3dc0 > _rw_destroy() at _rw_destroy+0x35/frame 0xfffffe00e48a3dd0 > in_lltable_destroy_lle_unlocked() at in_lltable_destroy_lle_unlocked+0x1a/frame 0xfffffe00e48a3df0 > epoch_call_task() at epoch_call_task+0x13a/frame 0xfffffe00e48a3e40 > gtaskqueue_run_locked() at gtaskqueue_run_locked+0xa7/frame 0xfffffe00e48a3ec0 > gtaskqueue_thread_loop() at gtaskqueue_thread_loop+0xc2/frame 0xfffffe00e48a3ef0 > fork_exit() at fork_exit+0x80/frame 0xfffffe00e48a3f30 > fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00e48a3f30 > --- trap 0, rip = 0, rsp = 0, rbp = 0 --- > > Details @ https://people.freebsd.org/~pho/stress/log/log0275.txt > Hi, Maybe you need to grab the lock before destroying it? Is this easily reproducible? --HPS