From: Thomas Gleixner <tglx@linutronix.de>
To: Sudeep Holla <sudeep.holla@arm.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Preeti U Murthy <preeti@linux.vnet.ibm.com>,
Suzuki Poulose <Suzuki.Poulose@arm.com>,
Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
Catalin Marinas <Catalin.Marinas@arm.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Subject: Re: [patch 1/2] tick/broadcast: Prevent deep idle states if no broadcast device available
Date: Mon, 6 Jul 2015 21:56:59 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.11.1507062156040.3916@nanos> (raw)
In-Reply-To: <559AC1A5.901@arm.com>
On Mon, 6 Jul 2015, Sudeep Holla wrote:
> This triggered the below crash on boot, looks like it's accessing
> hrtimer->function which is null in periodic mode IIUC
>
> Regards,
> Sudeep
Gah. I have no idea how that gets queued. /me goes off to tweak x86 to
emulate that crap.
> --->8
>
> Bad mode in Synchronous Abort handler detected, code 0x86000005 -- IABT
> (current EL)
> CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.2.0-rc1 #577
> Hardware name: ARM Juno development board (r0) (DT)
> task: ffffffc976900000 ti: ffffffc9768fc000 task.ti: ffffffc9768fc000
> PC is at 0x0
> LR is at bc_handler+0x20/0x58
> pc : [<0000000000000000>] lr : [<ffffffc00010f4a4>] pstate: a00001c5
> sp : ffffffc9768ffbd0
>
> Call trace:
> [< (null)>] (null)
> [<ffffffc000101e88>] __hrtimer_run_queues+0xe0/0x150
> [<ffffffc0001028b4>] hrtimer_run_queues+0xb8/0xe8
> [<ffffffc000101714>] update_process_times+0x28/0x6c
> [<ffffffc00010d978>] tick_periodic+0x3c/0xb8
> [<ffffffc00010da1c>] tick_handle_periodic+0x28/0x94
> [<ffffffc0004d61d4>] arch_timer_handler_phys+0x28/0x38
> [<ffffffc0000f5964>] handle_percpu_devid_irq+0x74/0x9c
> [<ffffffc0000f1668>] generic_handle_irq+0x30/0x4c
> [<ffffffc0000f1984>] __handle_domain_irq+0x5c/0xac
> [<ffffffc0000824a8>] gic_handle_irq+0x30/0x80
>
next prev parent reply other threads:[~2015-07-06 19:57 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-05 20:53 [patch 0/2] tic/broadcast: Plug a few corner cases which cause malfunction Thomas Gleixner
2015-07-05 20:53 ` [patch 1/2] tick/broadcast: Prevent deep idle states if no broadcast device available Thomas Gleixner
2015-07-06 15:09 ` Sudeep Holla
2015-07-06 15:35 ` Thomas Gleixner
2015-07-06 15:44 ` Sudeep Holla
2015-07-06 16:06 ` Thomas Gleixner
2015-07-06 16:27 ` Sudeep Holla
2015-07-06 16:53 ` Thomas Gleixner
2015-07-06 17:57 ` Sudeep Holla
2015-07-06 19:56 ` Thomas Gleixner [this message]
2015-07-07 7:31 ` Thomas Gleixner
2015-07-07 11:25 ` Sudeep Holla
2015-07-07 11:55 ` Thomas Gleixner
2015-07-07 17:12 ` [tip:timers/urgent] tick/broadcast: Prevent hrtimer recursion tip-bot for Thomas Gleixner
2015-07-07 17:12 ` [tip:timers/urgent] tick/broadcast: Sanity check the shutdown of the local clock_event tip-bot for Thomas Gleixner
2015-07-07 17:13 ` [tip:timers/urgent] tick/broadcast: Make idle check independent from mode and config tip-bot for Thomas Gleixner
2015-07-07 17:13 ` [tip:timers/urgent] tick/broadcast: Prevent deep idle if no broadcast device available tip-bot for Thomas Gleixner
2015-07-07 17:13 ` [tip:timers/urgent] tick/broadcast: Move the check for periodic mode inside state handling tip-bot for Thomas Gleixner
2015-07-07 17:14 ` [tip:timers/urgent] tick/broadcast: Return busy if periodic mode and hrtimer broadcast tip-bot for Thomas Gleixner
2015-07-07 17:14 ` [tip:timers/urgent] tick/broadcast: Return busy when IPI is pending tip-bot for Thomas Gleixner
2015-07-07 17:14 ` [tip:timers/urgent] tick/broadcast: Check for hrtimer broadcast active early tip-bot for Thomas Gleixner
2015-07-05 20:53 ` [patch 2/2] tick/broadcast: Handle spurious interrupts gracefully Thomas Gleixner
2015-07-06 15:17 ` Sudeep Holla
2015-07-06 15:36 ` Thomas Gleixner
2015-07-07 17:15 ` [tip:timers/urgent] " tip-bot for Thomas Gleixner
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