From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 034C6C761A6 for ; Tue, 4 Apr 2023 04:19:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232973AbjDDETF (ORCPT ); Tue, 4 Apr 2023 00:19:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58384 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229707AbjDDETC (ORCPT ); Tue, 4 Apr 2023 00:19:02 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 87978E66 for ; Mon, 3 Apr 2023 21:19:00 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 0E8B862D93 for ; Tue, 4 Apr 2023 04:19:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 69415C433EF; Tue, 4 Apr 2023 04:18:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1680581939; bh=4cgWbAl3Us899t4QoIzolyx/cqIKWym0D4kt9QNfkDI=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=hws+wDUBg0+TBvncJc3qxdOZ7ZgiY2nc6kcb6QfiGIEjDc8TQZQYGkaHxKByHi8i0 wt3oY4h+tLyZIn8P5yHWja7uQB4zqy8P3l0kShj1/klZDEEf6RoX8K6C+gHuKzeqb8 M/8tHvyMTV2ueG5QbrcYHXkkveGp5Aqy4r2mwywCsj8dGwYL1vymDDWCKLfQD1HQTG EeCgmMRBMqIGfxr0jQPCHzPjzrc6mKl07T7iqrpJw5SAORKVp2Hzt9CpDGh/t/KUhi v36s0U+tdJhq9xvm84jND+laGH5cIbHNl0jyki6wcfoe54DApNKJckquVFYSHr3j+q +9lBLtWpR8srg== Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id F093015404B4; Mon, 3 Apr 2023 21:18:58 -0700 (PDT) Date: Mon, 3 Apr 2023 21:18:58 -0700 From: "Paul E. McKenney" To: Dan Carpenter Cc: oe-kbuild@lists.linux.dev, lkp@intel.com, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [paulmck-rcu:dev.2023.03.30a 28/35] kernel/rcu/tree.c:2149 rcu_do_batch() error: uninitialized symbol 'jlimit'. Message-ID: <322a0530-42ea-46dc-8226-e1fbefe2dffa@paulmck-laptop> Reply-To: paulmck@kernel.org References: <90f95e84-842c-4273-90a3-93afd5353fd2@kili.mountain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <90f95e84-842c-4273-90a3-93afd5353fd2@kili.mountain> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 04, 2023 at 07:04:06AM +0300, Dan Carpenter wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2023.03.30a > head: e222f9a512539c3f4093a55d16624d9da614800b > commit: a63baab5f60110f3631c98b55d59066f1c68c4f7 [28/35] rcu: Employ jiffies-based backstop to callback time limit > config: openrisc-randconfig-m031-20230403 (https://download.01.org/0day-ci/archive/20230404/202304041113.A5sNFc2y-lkp@intel.com/config) > compiler: or1k-linux-gcc (GCC) 12.1.0 > > If you fix the issue, kindly add following tag where applicable > | Reported-by: kernel test robot > | Reported-by: Dan Carpenter > | Link: https://lore.kernel.org/r/202304041113.A5sNFc2y-lkp@intel.com/ > > smatch warnings: > kernel/rcu/tree.c:2149 rcu_do_batch() error: uninitialized symbol 'jlimit'. > > vim +/jlimit +2149 kernel/rcu/tree.c > > 5bb5d09cc4f868 kernel/rcu/tree.c Paul E. McKenney 2018-07-03 2065 static void rcu_do_batch(struct rcu_data *rdp) > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2066 { > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 2067 long bl; > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 2068 long count = 0; > b5374b2df0ac1c kernel/rcu/tree.c Paul E. McKenney 2020-06-23 2069 int div; > b4e6039e8af8c2 kernel/rcu/tree.c Joel Fernandes (Google 2020-11-18 2070) bool __maybe_unused empty; > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2071 unsigned long flags; > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 2072 unsigned long jlimit; > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 2073 bool jlimit_check = false; > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 2074 long pending; > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2075 struct rcu_cblist rcl = RCU_CBLIST_INITIALIZER(rcl); > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 2076 struct rcu_head *rhp; > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 2077 long tlimit = 0; > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2078 > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2079 /* If no callbacks are ready, just return. */ > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2080 if (!rcu_segcblist_ready_cbs(&rdp->cblist)) { > 3c779dfef2c452 kernel/rcu/tree.c Paul E. McKenney 2018-07-05 2081 trace_rcu_batch_start(rcu_state.name, > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2082 rcu_segcblist_n_cbs(&rdp->cblist), 0); > 3c779dfef2c452 kernel/rcu/tree.c Paul E. McKenney 2018-07-05 2083 trace_rcu_batch_end(rcu_state.name, 0, > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2084 !rcu_segcblist_empty(&rdp->cblist), > 4968c300e1fa53 kernel/rcutree.c Paul E. McKenney 2011-12-07 2085 need_resched(), is_idle_task(current), > 5103850654fdc6 kernel/rcu/tree.c Zqiang 2022-04-29 2086 rcu_is_callbacks_kthread(rdp)); > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2087 return; > 29c00b4a1d9e27 kernel/rcutree.c Paul E. McKenney 2011-06-17 2088 } > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2089 > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2090 /* > 7b65dfa32dca1b kernel/rcu/tree.c Frederic Weisbecker 2021-10-19 2091 * Extract the list of ready callbacks, disabling IRQs to prevent > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2092 * races with call_rcu() from interrupt handlers. Leave the > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2093 * callback counts, as rcu_barrier() needs to be conservative. > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2094 */ > 7b65dfa32dca1b kernel/rcu/tree.c Frederic Weisbecker 2021-10-19 2095 rcu_nocb_lock_irqsave(rdp, flags); > 8146c4e2e2c197 kernel/rcutree.c Paul E. McKenney 2012-01-10 2096 WARN_ON_ONCE(cpu_is_offline(smp_processor_id())); > 253cbbff621407 kernel/rcu/tree.c Paul E. McKenney 2022-11-14 2097 pending = rcu_segcblist_get_seglen(&rdp->cblist, RCU_DONE_TAIL); > b5374b2df0ac1c kernel/rcu/tree.c Paul E. McKenney 2020-06-23 2098 div = READ_ONCE(rcu_divisor); > b5374b2df0ac1c kernel/rcu/tree.c Paul E. McKenney 2020-06-23 2099 div = div < 0 ? 7 : div > sizeof(long) * 8 - 2 ? sizeof(long) * 8 - 2 : div; > b5374b2df0ac1c kernel/rcu/tree.c Paul E. McKenney 2020-06-23 2100 bl = max(rdp->blimit, pending >> div); > 70c461b1465c5e kernel/rcu/tree.c Paul E. McKenney 2023-03-21 2101 if ((in_serving_softirq() || rdp->rcu_cpu_kthread_status == RCU_KTHREAD_RUNNING) && > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 2102 (IS_ENABLED(CONFIG_RCU_DOUBLE_CHECK_CB_TIME) || unlikely(bl > 100))) { > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > jlimit is only initialized if one of these conditions is met. > > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 2103 const long npj = NSEC_PER_SEC / HZ; > a2b354b9950bb8 kernel/rcu/tree.c Paul E. McKenney 2020-06-23 2104 long rrn = READ_ONCE(rcu_resched_ns); > a2b354b9950bb8 kernel/rcu/tree.c Paul E. McKenney 2020-06-23 2105 > a2b354b9950bb8 kernel/rcu/tree.c Paul E. McKenney 2020-06-23 2106 rrn = rrn < NSEC_PER_MSEC ? NSEC_PER_MSEC : rrn > NSEC_PER_SEC ? NSEC_PER_SEC : rrn; > a2b354b9950bb8 kernel/rcu/tree.c Paul E. McKenney 2020-06-23 2107 tlimit = local_clock() + rrn; > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 2108 jlimit = jiffies + (rrn + npj + 1) / npj; > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 2109 jlimit_check = true; > a2b354b9950bb8 kernel/rcu/tree.c Paul E. McKenney 2020-06-23 2110 } > 3c779dfef2c452 kernel/rcu/tree.c Paul E. McKenney 2018-07-05 2111 trace_rcu_batch_start(rcu_state.name, > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2112 rcu_segcblist_n_cbs(&rdp->cblist), bl); > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2113 rcu_segcblist_extract_done_cbs(&rdp->cblist, &rcl); > 344e219d7d2b28 kernel/rcu/tree.c Frederic Weisbecker 2021-10-19 2114 if (rcu_rdp_is_offloaded(rdp)) > 7f36ef82e5cf0b kernel/rcu/tree.c Paul E. McKenney 2019-05-28 2115 rdp->qlen_last_fqs_check = rcu_segcblist_n_cbs(&rdp->cblist); > 3afe7fa535491e kernel/rcu/tree.c Joel Fernandes (Google 2020-11-14 2116) > 3afe7fa535491e kernel/rcu/tree.c Joel Fernandes (Google 2020-11-14 2117) trace_rcu_segcb_stats(&rdp->cblist, TPS("SegCbDequeued")); > 5d6742b37727e1 kernel/rcu/tree.c Paul E. McKenney 2019-05-15 2118 rcu_nocb_unlock_irqrestore(rdp, flags); > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2119 > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2120 /* Invoke callbacks. */ > 6a949b7af82db7 kernel/rcu/tree.c Paul E. McKenney 2019-07-28 2121 tick_dep_set_task(current, TICK_DEP_BIT_RCU); > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2122 rhp = rcu_cblist_dequeue(&rcl); > 3afe7fa535491e kernel/rcu/tree.c Joel Fernandes (Google 2020-11-14 2123) > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2124 for (; rhp; rhp = rcu_cblist_dequeue(&rcl)) { > 77a40f97030b27 kernel/rcu/tree.c Joel Fernandes (Google 2019-08-30 2125) rcu_callback_t f; > 77a40f97030b27 kernel/rcu/tree.c Joel Fernandes (Google 2019-08-30 2126) > 6bc335828056f3 kernel/rcu/tree.c Joel Fernandes (Google 2020-11-03 2127) count++; > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2128 debug_rcu_head_unqueue(rhp); > 77a40f97030b27 kernel/rcu/tree.c Joel Fernandes (Google 2019-08-30 2129) > 77a40f97030b27 kernel/rcu/tree.c Joel Fernandes (Google 2019-08-30 2130) rcu_lock_acquire(&rcu_callback_map); > 77a40f97030b27 kernel/rcu/tree.c Joel Fernandes (Google 2019-08-30 2131) trace_rcu_invoke_callback(rcu_state.name, rhp); > 77a40f97030b27 kernel/rcu/tree.c Joel Fernandes (Google 2019-08-30 2132) > 77a40f97030b27 kernel/rcu/tree.c Joel Fernandes (Google 2019-08-30 2133) f = rhp->func; > 77a40f97030b27 kernel/rcu/tree.c Joel Fernandes (Google 2019-08-30 2134) WRITE_ONCE(rhp->func, (rcu_callback_t)0L); > 77a40f97030b27 kernel/rcu/tree.c Joel Fernandes (Google 2019-08-30 2135) f(rhp); > 77a40f97030b27 kernel/rcu/tree.c Joel Fernandes (Google 2019-08-30 2136) > 77a40f97030b27 kernel/rcu/tree.c Joel Fernandes (Google 2019-08-30 2137) rcu_lock_release(&rcu_callback_map); > 77a40f97030b27 kernel/rcu/tree.c Joel Fernandes (Google 2019-08-30 2138) > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2139 /* > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2140 * Stop only if limit reached and CPU has something to do. > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2141 */ > 3e61e95e2d095e kernel/rcu/tree.c Frederic Weisbecker 2021-10-19 2142 if (in_serving_softirq()) { > 3e61e95e2d095e kernel/rcu/tree.c Frederic Weisbecker 2021-10-19 2143 if (count >= bl && (need_resched() || !is_idle_task(current))) > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2144 break; > 3e61e95e2d095e kernel/rcu/tree.c Frederic Weisbecker 2021-10-19 2145 /* > 3e61e95e2d095e kernel/rcu/tree.c Frederic Weisbecker 2021-10-19 2146 * Make sure we don't spend too much time here and deprive other > 3e61e95e2d095e kernel/rcu/tree.c Frederic Weisbecker 2021-10-19 2147 * softirq vectors of CPU cycles. > 3e61e95e2d095e kernel/rcu/tree.c Frederic Weisbecker 2021-10-19 2148 */ > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 @2149 if (rcu_do_batch_check_time(count, tlimit, jlimit_check, jlimit)) > ^^^^^^ > Uninitialized? Except that in rcu_do_batch_check_time(), jlimit is referenced only if jlimit_check is set, which it is only if jlimit is initialized. I suppose that I could unconditionally initialize jlimit to (say) zero to shut this up, but is there a better way to communicate the intent to the tooling? Or am I confused and there is a real use of the uninitialized value? Thanx, Paul > cfcdef5e30469f kernel/rcu/tree.c Eric Dumazet 2019-07-24 2150 break; > a554ba288845fd kernel/rcu/tree.c Frederic Weisbecker 2021-10-19 2151 } else { > 70c461b1465c5e kernel/rcu/tree.c Paul E. McKenney 2023-03-21 2152 // In rcuc/rcuoc context, so no worries about > 70c461b1465c5e kernel/rcu/tree.c Paul E. McKenney 2023-03-21 2153 // depriving other softirq vectors of CPU cycles. > 5d6742b37727e1 kernel/rcu/tree.c Paul E. McKenney 2019-05-15 2154 local_bh_enable(); > 5d6742b37727e1 kernel/rcu/tree.c Paul E. McKenney 2019-05-15 2155 lockdep_assert_irqs_enabled(); > 5d6742b37727e1 kernel/rcu/tree.c Paul E. McKenney 2019-05-15 2156 cond_resched_tasks_rcu_qs(); > 5d6742b37727e1 kernel/rcu/tree.c Paul E. McKenney 2019-05-15 2157 lockdep_assert_irqs_enabled(); > 5d6742b37727e1 kernel/rcu/tree.c Paul E. McKenney 2019-05-15 2158 local_bh_disable(); > 70c461b1465c5e kernel/rcu/tree.c Paul E. McKenney 2023-03-21 2159 // But rcuc kthreads can delay quiescent-state > 70c461b1465c5e kernel/rcu/tree.c Paul E. McKenney 2023-03-21 2160 // reporting, so check time limits for them. > 70c461b1465c5e kernel/rcu/tree.c Paul E. McKenney 2023-03-21 2161 if (rdp->rcu_cpu_kthread_status == RCU_KTHREAD_RUNNING && > a63baab5f60110 kernel/rcu/tree.c Paul E. McKenney 2023-03-31 2162 rcu_do_batch_check_time(count, tlimit, jlimit_check, jlimit)) { > 70c461b1465c5e kernel/rcu/tree.c Paul E. McKenney 2023-03-21 2163 rdp->rcu_cpu_has_work = 1; > 70c461b1465c5e kernel/rcu/tree.c Paul E. McKenney 2023-03-21 2164 break; > 70c461b1465c5e kernel/rcu/tree.c Paul E. McKenney 2023-03-21 2165 } > 5d6742b37727e1 kernel/rcu/tree.c Paul E. McKenney 2019-05-15 2166 } > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2167 } > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2168 > 7b65dfa32dca1b kernel/rcu/tree.c Frederic Weisbecker 2021-10-19 2169 rcu_nocb_lock_irqsave(rdp, flags); > e816d56fad57ba kernel/rcu/tree.c Paul E. McKenney 2020-05-01 2170 rdp->n_cbs_invoked += count; > 3c779dfef2c452 kernel/rcu/tree.c Paul E. McKenney 2018-07-05 2171 trace_rcu_batch_end(rcu_state.name, count, !!rcl.head, need_resched(), > 5103850654fdc6 kernel/rcu/tree.c Zqiang 2022-04-29 2172 is_idle_task(current), rcu_is_callbacks_kthread(rdp)); > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2173 > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2174 /* Update counts and requeue any remaining callbacks. */ > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2175 rcu_segcblist_insert_done_cbs(&rdp->cblist, &rcl); > 6bc335828056f3 kernel/rcu/tree.c Joel Fernandes (Google 2020-11-03 2176) rcu_segcblist_add_len(&rdp->cblist, -count); > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2177 > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2178 /* Reinstate batch limit if we have worked down the excess. */ > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2179 count = rcu_segcblist_n_cbs(&rdp->cblist); > d5a9a8c3bc8068 kernel/rcu/tree.c Paul E. McKenney 2019-04-10 2180 if (rdp->blimit >= DEFAULT_MAX_RCU_BLIMIT && count <= qlowmark) > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2181 rdp->blimit = blimit; > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2182 > 37c72e56f6b234 kernel/rcutree.c Paul E. McKenney 2009-10-14 2183 /* Reset ->qlen_last_fqs_check trigger if enough CBs have drained. */ > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2184 if (count == 0 && rdp->qlen_last_fqs_check != 0) { > 37c72e56f6b234 kernel/rcutree.c Paul E. McKenney 2009-10-14 2185 rdp->qlen_last_fqs_check = 0; > 2431774f04d105 kernel/rcu/tree.c Paul E. McKenney 2021-07-20 2186 rdp->n_force_qs_snap = READ_ONCE(rcu_state.n_force_qs); > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2187 } else if (count < rdp->qlen_last_fqs_check - qhimark) > 15fecf89e46a96 kernel/rcu/tree.c Paul E. McKenney 2017-02-08 2188 rdp->qlen_last_fqs_check = count; > efd88b02bb9e6b kernel/rcu/tree.c Paul E. McKenney 2017-10-19 2189 > efd88b02bb9e6b kernel/rcu/tree.c Paul E. McKenney 2017-10-19 2190 /* > efd88b02bb9e6b kernel/rcu/tree.c Paul E. McKenney 2017-10-19 2191 * The following usually indicates a double call_rcu(). To track > efd88b02bb9e6b kernel/rcu/tree.c Paul E. McKenney 2017-10-19 2192 * this down, try building with CONFIG_DEBUG_OBJECTS_RCU_HEAD=y. > efd88b02bb9e6b kernel/rcu/tree.c Paul E. McKenney 2017-10-19 2193 */ > b4e6039e8af8c2 kernel/rcu/tree.c Joel Fernandes (Google 2020-11-18 2194) empty = rcu_segcblist_empty(&rdp->cblist); > b4e6039e8af8c2 kernel/rcu/tree.c Joel Fernandes (Google 2020-11-18 2195) WARN_ON_ONCE(count == 0 && !empty); > d1b222c6be1f8b kernel/rcu/tree.c Paul E. McKenney 2019-07-02 2196 WARN_ON_ONCE(!IS_ENABLED(CONFIG_RCU_NOCB_CPU) && > b4e6039e8af8c2 kernel/rcu/tree.c Joel Fernandes (Google 2020-11-18 2197) count != 0 && empty); > b4e6039e8af8c2 kernel/rcu/tree.c Joel Fernandes (Google 2020-11-18 2198) WARN_ON_ONCE(count == 0 && rcu_segcblist_n_segment_cbs(&rdp->cblist) != 0); > b4e6039e8af8c2 kernel/rcu/tree.c Joel Fernandes (Google 2020-11-18 2199) WARN_ON_ONCE(!empty && rcu_segcblist_n_segment_cbs(&rdp->cblist) == 0); > 37c72e56f6b234 kernel/rcutree.c Paul E. McKenney 2009-10-14 2200 > 5d6742b37727e1 kernel/rcu/tree.c Paul E. McKenney 2019-05-15 2201 rcu_nocb_unlock_irqrestore(rdp, flags); > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2202 > 6a949b7af82db7 kernel/rcu/tree.c Paul E. McKenney 2019-07-28 2203 tick_dep_clear_task(current, TICK_DEP_BIT_RCU); > 64db4cfff99c04 kernel/rcutree.c Paul E. McKenney 2008-12-18 2204 } > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests >