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Message-ID: <CA+icZUVFFMFFmx8tSTZ9YB=FbmjtD_ZfQa3JTOwb5K7eLW=k-w@mail.gmail.com> Date: Thu, 5 Feb 2015 00:48:35 +0100 From: Sedat Dilek <sedat.dilek@...il.com> To: "Rafael J. Wysocki" <rjw@...ysocki.net> Cc: Paul McKenney <paulmck@...ux.vnet.ibm.com>, "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>, linux-next <linux-next@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, Stephen Rothwell <sfr@...b.auug.org.au>, Kristen Carlson Accardi <kristen@...ux.intel.com> Subject: Re: linux-next: Tree for Feb 4 On Thu, Feb 5, 2015 at 12:30 AM, Rafael J. Wysocki <rjw@...ysocki.net> wrote: > On Wednesday, February 04, 2015 11:46:32 PM Sedat Dilek wrote: >> On Wed, Feb 4, 2015 at 10:54 PM, Rafael J. Wysocki <rjw@...ysocki.net> wrote: >> > On Wednesday, February 04, 2015 09:18:03 PM Sedat Dilek wrote: >> >> On Wed, Feb 4, 2015 at 9:35 AM, Stephen Rothwell <sfr@...b.auug.org.au> wrote: >> >> > Hi all, >> >> > >> >> > The next release I will be making will be next-20150209 - which will >> >> > probably be after the v3.19 release. >> >> > >> >> > Changes since 20150203: >> >> > >> >> > The sound-asoc tree gained a conflict against the sound tree. >> >> > >> >> > The scsi tree gained a build failure caused by an interaction with the >> >> > driver-core tree. I applied a merge fix patch. >> >> > >> >> > The akpm-current tree gained a build failure for which I disabled >> >> > CONFIG_KASAN. >> >> > >> >> > Non-merge commits (relative to Linus' tree): 7461 >> >> > 7314 files changed, 309736 insertions(+), 172363 deletions(-) >> >> > >> >> > ---------------------------------------------------------------------------- >> >> > >> >> >> >> [ CC linux-rcu | linux-pm | intel_pstate maintainers ] >> > >> > Dirk is not the maintainer of intel_pstate any more, CC: Kristen. >> > >> >> Hi, >> >> >> >> after suspend-and-resume I see the following call-trace: >> > >> > Do you see that after CPU1 offline too? >> > >> >> NO. >> >> After... >> >> root# echo 0 > /sys/devices/system/cpu/cpu1/online >> >> ...I see this: >> >> +[ 707.936668] PM: Saving platform NVS memory >> +[ 707.936674] Disabling non-boot CPUs ... >> +[ 707.936712] intel_pstate CPU 2 exiting >> +[ 707.938024] smpboot: CPU 2 didn't die... >> +[ 707.949128] intel_pstate CPU 3 exiting >> +[ 707.950369] smpboot: CPU 3 didn't die... >> +[ 707.966248] ACPI: Low-level resume complete >> +[ 707.966302] PM: Restoring platform NVS memory >> >> Full dmesg attached. > > The dmesg doesn't match what you said above. > > Anyway, that's not what I meant. Does the CPU1 offlining alone: > > # echo 0 > /sys/devices/system/cpu/cpu1/online > > trigger the trace? It should. > YES, I see this... ... [ 84.668616] PPP BSD Compression module registered [ 84.678072] PPP Deflate Compression module registered [ 101.143582] intel_pstate CPU 1 exiting [ 101.157134] [ 101.157135] =============================== [ 101.157136] [ INFO: suspicious RCU usage. ] [ 101.157139] 3.19.0-rc7-next-20150204.3-iniza-small #1 Not tainted [ 101.157140] ------------------------------- [ 101.157142] include/trace/events/tlb.h:35 suspicious rcu_dereference_check() usage! [ 101.157142] [ 101.157142] other info that might help us debug this: [ 101.157142] [ 101.157143] [ 101.157143] RCU used illegally from offline CPU! [ 101.157143] rcu_scheduler_active = 1, debug_locks = 0 [ 101.157144] no locks held by swapper/1/0. [ 101.157144] [ 101.157144] stack backtrace: [ 101.157146] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.19.0-rc7-next-20150204.3-iniza-small #1 [ 101.157147] Hardware name: SAMSUNG ELECTRONICS CO., LTD. 530U3BI/530U4BI/530U4BH/530U3BI/530U4BI/530U4BH, BIOS 13XK 03/28/2013 [ 101.157151] 0000000000000001 ffff88011a44fe18 ffffffff817e35fd 0000000000000011 [ 101.157153] ffff88011a448290 ffff88011a44fe48 ffffffff810d6847 ffff8800d3b96100 [ 101.157155] 0000000000000001 ffff88011a44c000 0000000000000005 ffff88011a44fe78 [ 101.157156] Call Trace: [ 101.157162] [<ffffffff817e35fd>] dump_stack+0x4c/0x65 [ 101.157166] [<ffffffff810d6847>] lockdep_rcu_suspicious+0xe7/0x120 [ 101.157170] [<ffffffff810b71a5>] idle_task_exit+0x205/0x2c0 [ 101.157173] [<ffffffff81054c4e>] play_dead_common+0xe/0x50 [ 101.157175] [<ffffffff81054ca5>] native_play_dead+0x15/0x140 [ 101.157179] [<ffffffff8102963f>] arch_cpu_idle_dead+0xf/0x20 [ 101.157181] [<ffffffff810cd89e>] cpu_startup_entry+0x37e/0x580 [ 101.157183] [<ffffffff81053e20>] start_secondary+0x140/0x150 [ 101.157228] smpboot: CPU 1 is now offline - Sedat - -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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