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 X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C2AEC433E2 for ; Wed, 9 Sep 2020 04:38:49 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9049D21D40 for ; Wed, 9 Sep 2020 04:38:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="KrX+hmUn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9049D21D40 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id DBED66B0071; Wed, 9 Sep 2020 00:38:47 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D6E9D6B0073; Wed, 9 Sep 2020 00:38:47 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C5C568E0001; Wed, 9 Sep 2020 00:38:47 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0241.hostedemail.com [216.40.44.241]) by kanga.kvack.org (Postfix) with ESMTP id AFA776B0071 for ; Wed, 9 Sep 2020 00:38:47 -0400 (EDT) Received: from smtpin28.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 616711EE6 for ; Wed, 9 Sep 2020 04:38:47 +0000 (UTC) X-FDA: 77242267494.28.nose52_3c15e83270da Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin28.hostedemail.com (Postfix) with ESMTP id 2F6D06C04 for ; Wed, 9 Sep 2020 04:38:47 +0000 (UTC) X-HE-Tag: nose52_3c15e83270da X-Filterd-Recvd-Size: 16983 Received: from mail-ua1-f46.google.com (mail-ua1-f46.google.com [209.85.222.46]) by imf35.hostedemail.com (Postfix) with ESMTP for ; Wed, 9 Sep 2020 04:38:46 +0000 (UTC) Received: by mail-ua1-f46.google.com with SMTP id i22so461754uat.8 for ; Tue, 08 Sep 2020 21:38:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:from:date:message-id:subject:to:cc; bh=uR+rPpxqCzj1rn3UEtuWhrArIxD6Cs95gsyB99mLm8o=; b=KrX+hmUnc38Q0a4rHrlWdthm2e+t5DqpQxDmOfo82vGgxfjZTx3o2ee/ezbu1QIO07 1yr48BAdF/P5N8fRUKEQ1wr4tlY3BH+0SnIw+FCTDDu3d1hxHLlOAOenu7BUF1UFd4mY 3JvF4+Xyiiip9x94qnUC/pJtCq0pDvzNa2sJmKyvtUp31DFEhxS0RuFBjbg8Ja+d402d vhCPuksDXtJW++uK9dQKSNUNpV4vLGy9PaCRUdkUA2lQSPNtSVPRQJ4JFfVdXaHC+fNO fy6tXUz9o/W5XpJnhknU2q0DA96Y390d3KWkgFLnSzlgVDfUjfu6SYzB7WRMKHqx1Tev u1Aw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=uR+rPpxqCzj1rn3UEtuWhrArIxD6Cs95gsyB99mLm8o=; b=mP2oRm1Lq3Xzx+aIyWAa6oiOa81taQkr6ocNFAMIG4nTv3EWyqCQObAIo4VdXAiKcv sYt4BAJklkoUPbKqTi+2yjPdtF8UgiJ9ucIdzCx60bYqrgSmfecHAKdunOEnXLrw1gF4 0UrLLaF61bQ6vMvLO3Jc9oHIwwbhWVwWmSZt9wnSgMg98Xvm9KpvLGsMGbGaipgtjXxO 9QSEOTtJ6nThhNiPU8VPY5KPOffpnBA5MIpxw6ucyeTgHHaI4Cl3LjNtZurlOLM/V1zR eU1GEgr+BylnJ5pGciUjaW1Pg3UT4nHwgoDKACZBkZsxKchRjAiU/yjC1r51E12//6t5 WTKg== X-Gm-Message-State: AOAM532qMKtTJV3L1hfkhpJFtDc/OyMaGriZz6Ub9XSE74zhGkbrV4uD cXrgoDLcekjoj7kn9xvfv3JeBOvWIRmqKY74D6Mv8g== X-Google-Smtp-Source: ABdhPJzacr9m49kcqzYcvXdQMX/sPxFltce1zmkjR1sHXCd61kMUEjEaAdCc47Gr1QialYVA51Ub/MPnj2qBlG6VPRw= X-Received: by 2002:a9f:35d0:: with SMTP id u16mr1418044uad.113.1599626325672; Tue, 08 Sep 2020 21:38:45 -0700 (PDT) MIME-Version: 1.0 From: Naresh Kamboju Date: Wed, 9 Sep 2020 10:08:34 +0530 Message-ID: Subject: WARNING: suspicious RCU usage: race/events/tlb.h:57 suspicious rcu_dereference_check() usage! To: Linux-Next Mailing List , rcu@vger.kernel.org, linux-mm , open list , lkft-triage@lists.linaro.org, Linux PM Cc: ": Paul E. McKenney" , Vincent Guittot , Stephen Rothwell , Peter Zijlstra , Will Deacon , Guenter Roeck , Viresh Kumar , Steven Rostedt , Juri Lelli Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 2F6D06C04 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: While booting x86_64 with Linux next 20200908 tag kernel this warning was noticed. metadata: git branch: master git repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git commit: dff9f829e5b0181d4ed9d35aa62d695292399b54 git describe: next-20200908 kernel-config: http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/intel-corei7-64/lkft/linux-next/853/config warning logs: --------------------- [ 18.874329] Freeing unused kernel image (rodata/data gap) memory: 2012K [ 18.881107] Run /sbin/init as init process [ 18.905611] [ 18.907190] ============================= [ 18.911194] WARNING: suspicious RCU usage [ 18.915199] 5.9.0-rc4-next-20200908 #1 Not tainted [ 18.919982] ----------------------------- [ 18.923984] /usr/src/kernel/include/trace/events/tlb.h:57 suspicious rcu_dereference_check() usage! [ 18.933016] [ 18.933016] other info that might help us debug this: [ 18.933016] [ 18.941006] [ 18.941006] rcu_scheduler_active = 2, debug_locks = 1 [ 18.947523] RCU used illegally from extended quiescent state! [ 18.953261] no locks held by swapper/2/0. [ 18.957264] [ 18.957264] stack backtrace: [ 18.961619] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.9.0-rc4-next-20200908 #1 [ 18.969007] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.2 05/23/2018 [ 18.976392] Call Trace: [ 18.978844] dump_stack+0x7d/0x9f [ 18.982158] lockdep_rcu_suspicious+0xce/0xf0 [ 18.986517] switch_mm_irqs_off+0x441/0x450 [ 18.990702] switch_mm+0x1b/0x50 [ 18.993936] leave_mm+0x34/0x40 [ 18.997082] acpi_idle_enter_bm+0x23/0x120 [ 19.001180] acpi_idle_enter+0x189/0x2a0 [ 19.005104] ? rcu_eqs_enter.constprop.85+0xb2/0x180 [ 19.010072] cpuidle_enter_state+0xa5/0x4b0 [ 19.015265] cpuidle_enter+0x2e/0x40 [ 19.015268] do_idle+0x226/0x2b0 [ 19.015273] cpu_startup_entry+0x1d/0x20 [ 19.015275] start_secondary+0x114/0x150 [ 19.029943] secondary_startup_64+0xb6/0xc0 [ 19.034141] [ 19.034142] ============================= [ 19.034142] WARNING: suspicious RCU usage [ 19.034142] 5.9.0-rc4-next-20200908 #1 Not tainted [ 19.034143] ----------------------------- [ 19.034143] /usr/src/kernel/include/trace/events/lock.h:37 suspicious rcu_dereference_check() usage! [ 19.034143] [ 19.034144] other info that might help us debug this: [ 19.034144] [ 19.034144] [ 19.034145] rcu_scheduler_active = 2, debug_locks = 1 [ 19.034145] RCU used illegally from extended quiescent state! [ 19.034146] no locks held by swapper/2/0. [ 19.034146] [ 19.034146] stack backtrace: [ 19.034147] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.9.0-rc4-next-20200908 #1 [ 19.034147] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.2 05/23/2018 [ 19.034147] Call Trace: [ 19.034148] dump_stack+0x7d/0x9f [ 19.034148] lockdep_rcu_suspicious+0xce/0xf0 [ 19.034148] lock_acquire+0x327/0x390 [ 19.034149] _raw_spin_lock+0x2f/0x40 [ 19.034149] ? vprintk_emit+0x78/0x2f0 [ 19.034149] vprintk_emit+0x78/0x2f0 [ 19.034149] vprintk_default+0x1f/0x30 [ 19.034150] vprintk_func+0x51/0xf0 [ 19.034150] printk+0x52/0x6e [ 19.034150] ? __lock_acquire+0x32a/0x19f0 [ 19.034151] lockdep_rcu_suspicious+0x20/0xf0 [ 19.034151] switch_mm_irqs_off+0x441/0x450 [ 19.034151] switch_mm+0x1b/0x50 [ 19.034152] leave_mm+0x34/0x40 [ 19.034152] acpi_idle_enter_bm+0x23/0x120 [ 19.034152] acpi_idle_enter+0x189/0x2a0 [ 19.034153] ? rcu_eqs_enter.constprop.85+0xb2/0x180 [ 19.034153] cpuidle_enter_state+0xa5/0x4b0 [ 19.034153] cpuidle_enter+0x2e/0x40 [ 19.034154] do_idle+0x226/0x2b0 [ 19.034154] cpu_startup_entry+0x1d/0x20 [ 19.034154] start_secondary+0x114/0x150 [ 19.034155] secondary_startup_64+0xb6/0xc0 [ 19.034155] [ 19.034155] ============================= [ 19.034156] WARNING: suspicious RCU usage [ 19.034156] 5.9.0-rc4-next-20200908 #1 Not tainted [ 19.034156] ----------------------------- [ 19.034157] /usr/src/kernel/include/trace/events/lock.h:63 suspicious rcu_dereference_check() usage! [ 19.034157] [ 19.034157] other info that might help us debug this: [ 19.034158] [ 19.034158] [ 19.034158] rcu_scheduler_active = 2, debug_locks = 1 [ 19.034159] RCU used illegally from extended quiescent state! [ 19.034159] 1 lock held by swapper/2/0: [ 19.034159] #0: ffffffffbed25f58 (logbuf_lock){-...}-{2:2}, at: vprintk_emit+0x78/0x2f0 [ 19.034161] [ 19.034161] stack backtrace: [ 19.034162] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.9.0-rc4-next-20200908 #1 [ 19.034162] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.2 05/23/2018 [ 19.034162] Call Trace: [ 19.034163] dump_stack+0x7d/0x9f [ 19.034163] lockdep_rcu_suspicious+0xce/0xf0 [ 19.034163] ? vprintk_emit+0x9e/0x2f0 [ 19.034164] lock_release+0x246/0x270 [ 19.034164] _raw_spin_unlock+0x1a/0x30 [ 19.034164] vprintk_emit+0x9e/0x2f0 [ 19.034165] vprintk_default+0x1f/0x30 [ 19.034165] vprintk_func+0x51/0xf0 [ 19.034165] printk+0x52/0x6e [ 19.034166] ? __lock_acquire+0x32a/0x19f0 [ 19.034166] lockdep_rcu_suspicious+0x20/0xf0 [ 19.034166] switch_mm_irqs_off+0x441/0x450 [ 19.034167] switch_mm+0x1b/0x50 [ 19.034167] leave_mm+0x34/0x40 [ 19.034167] acpi_idle_enter_bm+0x23/0x120 [ 19.034167] acpi_idle_enter+0x189/0x2a0 [ 19.034168] ? rcu_eqs_enter.constprop.85+0xb2/0x180 [ 19.034168] cpuidle_enter_state+0xa5/0x4b0 [ 19.034168] cpuidle_enter+0x2e/0x40 [ 19.034169] do_idle+0x226/0x2b0 [ 19.034169] cpu_startup_entry+0x1d/0x20 [ 19.034169] start_secondary+0x114/0x150 [ 19.034170] secondary_startup_64+0xb6/0xc0 [ 19.034170] [ 19.034170] ============================= [ 19.034171] WARNING: suspicious RCU usage [ 19.034171] 5.9.0-rc4-next-20200908 #1 Not tainted [ 19.034171] ----------------------------- [ 19.034172] /usr/src/kernel/include/trace/events/sched.h:90 suspicious rcu_dereference_check() usage! [ 19.034172] [ 19.034172] other info that might help us debug this: [ 19.034173] [ 19.034173] [ 19.034173] rcu_scheduler_active = 2, debug_locks = 1 [ 19.034174] RCU used illegally from extended quiescent state! [ 19.034174] 2 locks held by swapper/2/0: [ 19.034174] #0: ffffffffbed25ff8 ((console_sem).lock){-...}-{2:2}, at: up+0x16/0x50 [ 19.034176] #1: ffff90dbeea90800 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0x52/0x7a0 [ 19.034178] [ 19.034178] stack backtrace: [ 19.034178] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.9.0-rc4-next-20200908 #1 [ 19.034179] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.2 05/23/2018 [ 19.034179] Call Trace: [ 19.034179] dump_stack+0x7d/0x9f [ 19.034180] lockdep_rcu_suspicious+0xce/0xf0 [ 19.034180] try_to_wake_up+0x6a4/0x7a0 [ 19.034180] ? find_held_lock+0x35/0xa0 [ 19.034181] wake_up_process+0x15/0x20 [ 19.034181] __up.isra.4+0x39/0x40 [ 19.034181] up+0x46/0x50 [ 19.034182] __up_console_sem+0x32/0x60 [ 19.034182] console_unlock+0x346/0x5c0 [ 19.034182] vprintk_emit+0x1d1/0x2f0 [ 19.034183] ? cpuidle_enter_state+0xa5/0x4b0 [ 19.034183] vprintk_default+0x1f/0x30 [ 19.034183] vprintk_func+0x51/0xf0 [ 19.034184] ? rcu_nmi_exit+0x12a/0x260 [ 19.034184] printk+0x52/0x6e [ 19.034184] ? kernel_text_address+0x96/0xf0 [ 19.034185] ? cpuidle_enter_state+0xa5/0x4b0 [ 19.034185] ? cpuidle_enter_state+0xa5/0x4b0 [ 19.034185] show_trace_log_lvl+0x32f/0x3b0 [ 19.034186] ? cpuidle_enter_state+0xa5/0x4b0 [ 19.034186] show_stack+0x30/0x40 [ 19.034186] dump_stack+0x7d/0x9f [ 19.034186] lockdep_rcu_suspicious+0xce/0xf0 [ 19.034187] switch_mm_irqs_off+0x441/0x450 [ 19.034187] switch_mm+0x1b/0x50 [ 19.034187] leave_mm+0x34/0x40 [ 19.034188] acpi_idle_enter_bm+0x23/0x120 [ 19.034188] acpi_idle_enter+0x189/0x2a0 [ 19.034188] ? rcu_eqs_enter.constprop.85+0xb2/0x180 [ 19.034189] cpuidle_enter_state+0xa5/0x4b0 [ 19.034189] cpuidle_enter+0x2e/0x40 [ 19.034189] do_idle+0x226/0x2b0 [ 19.034190] cpu_startup_entry+0x1d/0x20 [ 19.034190] start_secondary+0x114/0x150 [ 19.034190] secondary_startup_64+0xb6/0xc0 [ 19.034191] [ 19.034191] ============================= [ 19.034191] WARNING: suspicious RCU usage [ 19.034192] 5.9.0-rc4-next-20200908 #1 Not tainted [ 19.034192] ----------------------------- [ 19.034192] /usr/src/kernel/include/linux/rcupdate.h:643 rcu_read_lock() used illegally while idle! [ 19.034193] [ 19.034193] other info that might help us debug this: [ 19.034193] [ 19.034194] [ 19.034194] rcu_scheduler_active = 2, debug_locks = 1 [ 19.034194] RCU used illegally from extended quiescent state! [ 19.034195] 3 locks held by swapper/2/0: [ 19.034195] #0: ffffffffbed25ff8 ((console_sem).lock){-...}-{2:2}, at: up+0x16/0x50 [ 19.034196] #1: ffff90dbeea90800 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0x52/0x7a0 [ 19.034198] #2: ffffffffbed28580 (rcu_read_lock){....}-{1:2}, at: select_task_rq_fair+0xd0/0x10a0 [ 19.034199] [ 19.034200] stack backtrace: [ 19.034200] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.9.0-rc4-next-20200908 #1 [ 19.034201] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.2 05/23/2018 [ 19.034201] Call Trace: [ 19.034201] dump_stack+0x7d/0x9f [ 19.034202] lockdep_rcu_suspicious+0xce/0xf0 [ 19.034202] select_task_rq_fair+0x4aa/0x10a0 [ 19.034202] ? show_stack+0x30/0x40 [ 19.034203] try_to_wake_up+0x181/0x7a0 [ 19.034203] ? find_held_lock+0x35/0xa0 [ 19.034203] wake_up_process+0x15/0x20 [ 19.034203] __up.isra.4+0x39/0x40 [ 19.034204] up+0x46/0x50 [ 19.034204] __up_console_sem+0x32/0x60 [ 19.034204] console_unlock+0x346/0x5c0 [ 19.034205] vprintk_emit+0x1d1/0x2f0 [ 19.034205] ? cpuidle_enter_state+0xa5/0x4b0 [ 19.034205] vprintk_default+0x1f/0x30 [ 19.034206] vprintk_func+0x51/0xf0 [ 19.034206] ? rcu_nmi_exit+0x12a/0x260 [ 19.034206] printk+0x52/0x6e [ 19.034207] ? kernel_text_address+0x96/0xf0 [ 19.034207] ? cpuidle_enter_state+0xa5/0x4b0 [ 19.034207] ? cpuidle_enter_state+0xa5/0x4b0 [ 19.034208] show_trace_log_lvl+0x32f/0x3b0 [ 19.034208] ? cpuidle_enter_state+0xa5/0x4b0 [ 19.034208] show_stack+0x30/0x40 [ 19.034209] dump_stack+0x7d/0x9f [ 19.034209] lockdep_rcu_suspicious+0xce/0xf0 [ 19.034209] switch_mm_irqs_off+0x441/0x450 [ 19.034210] switch_mm+0x1b/0x50 [ 19.034210] leave_mm+0x34/0x40 [ 19.034210] acpi_idle_enter_bm+0x23/0x120 [ 19.034211] acpi_idle_enter+0x189/0x2a0 [ 19.034211] ? rcu_eqs_enter.constprop.85+0xb2/0x180 [ 19.034211] cpuidle_enter_state+0xa5/0x4b0 [ 19.034212] cpuidle_enter+0x2e/0x40 [ 19.034212] do_idle+0x226/0x2b0 [ 19.034212] cpu_startup_entry+0x1d/0x20 [ 19.034213] start_secondary+0x114/0x150 [ 19.034213] secondary_startup_64+0xb6/0xc0 [ 19.034213] [ 19.034214] ============================= [ 19.034214] WARNING: suspicious RCU usage [ 19.034214] 5.9.0-rc4-next-20200908 #1 Not tainted [ 19.034215] ----------------------------- [ 19.034215] /usr/src/kernel/kernel/sched/fair.c:6694 suspicious rcu_dereference_check() usage! [ 19.034215] [ 19.034216] other info that might help us debug this: [ 19.034216] [ 19.034216] [ 19.034217] rcu_scheduler_active = 2, debug_locks = 1 [ 19.034217] RCU used illegally from extended quiescent state! [ 19.034217] 3 locks held by swapper/2/0: [ 19.034217] #0: ffffffffbed25ff8 ((console_sem).lock){-...}-{2:2}, at: up+0x16/0x50 [ 19.034219] #1: ffff90dbeea90800 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0x52/0x7a0 [ 19.034220] #2: ffffffffbed28580 (rcu_read_lock){....}-{1:2}, at: select_task_rq_fair+0xd0/0x10a0 [ 19.034222] [ 19.034222] stack backtrace: [ 19.034223] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.9.0-rc4-next-20200908 #1 [ 19.034223] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.2 05/23/2018 [ 19.034223] Call Trace: [ 19.034224] dump_stack+0x7d/0x9f [ 19.034224] lockdep_rcu_suspicious+0xce/0xf0 [ 19.034224] select_task_rq_fair+0x448/0x10a0 [ 19.034225] ? show_stack+0x30/0x40 [ 19.034225] try_to_wake_up+0x181/0x7a0 [ 19.034225] ? find_held_lock+0x35/0xa0 [ 19.034226] wake_up_process+0x15/0x20 [ 19.034226] __up.isra.4+0x39/0x40 [ 19.034226] up+0x46/0x50 [ 19.034227] __up_console_sem+0x32/0x60 [ 19.034227] console_unlock+0x346/0x5c0 [ 19.034227] vprintk_emit+0x1d1/0x2f0 [ 19.034228] ? cpuidle_enter_state+0xa5/0x4b0 [ 19.034228] vprintk_default+0x1f/0x30 [ 19.034228] vprintk_func+0x51/0xf0 [ 19.034228] ? rcu_nmi_exit+0x12a/0x260 [ 19.034229] printk+0x52/0x6e [ 19.034229] ? kernel_text_address+0x96/0xf0 [ 19.034229] ? cpuidle_enter_state+0xa5/0x4b0 [ 19.034230] ? cpuidle_enter_state+0xa5/0x4b0 [ 19.034230] show_trace_log_lvl+0x32f/0x3b0 [ 19.034230] ? cpuidle_enter_state+0xa5/0x4b0 [ 19.034231] show_stack+0x30/0x40 [ 19.034231] dump_stack+0x7d/0x9f [ 19.034231] lockdep_rcu_suspicious+0xce/0xf0 [ 19.034232] switch_mm_irqs_off+0x441/0x450 [ 19.034232] switch_mm+0x1b/0x50 [ 19.034232] leave_mm+0x34/0x40 [ 19.034233] acpi_idle_enter_bm+0x23/0x120 [ 19.034233] acpi_idle_enter+0x189/0x2a0 [ 19.034233] ? rcu_eqs_enter.constprop.85+0xb2/0x180 [ 19.034234] cpuidle_enter_state+0xa5/0x4b0 [ 19.034234] cpuidle_enter+0x2e/0x40 [ 19.034234] do_idle+0x226/0x2b0 [ 19.034235] cpu_startup_entry+0x1d/0x20 [ 19.034235] start_secondary+0x114/0x150 [ 19.034235] secondary_startup_64+0xb6/0xc0 Full test log, https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20200908/testrun/3171064/suite/linux-log-parser/test/check-kernel-bug-1743477/log -- Linaro LKFT https://lkft.linaro.org