From: Will Deacon <will.deacon@arm.com>
To: Tyler Baicar <tbaicar@codeaurora.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Borislav Petkov <bp@suse.de>, Len Brown <lenb@kernel.org>,
Tony Luck <tony.luck@intel.com>,
Fengguang Wu <fengguang.wu@intel.com>,
Huang Ying <ying.huang@intel.com>,
Chen Gong <gong.chen@linux.intel.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Linux ACPI <linux-acpi@vger.kernel.org>,
Timur Tabi <timur@codeaurora.org>,
mark.rutland@arm.com
Subject: Re: [ghes_copy_tofrom_phys] BUG: sleeping function called from invalid context at mm/page_alloc.c:4150
Date: Tue, 31 Oct 2017 10:38:33 +0000 [thread overview]
Message-ID: <20171031103833.GD5584@arm.com> (raw)
In-Reply-To: <526e7cf2-0672-e44b-c32f-26128a2dfd37@codeaurora.org>
On Mon, Oct 30, 2017 at 04:14:15PM -0400, Tyler Baicar wrote:
> On 10/30/2017 1:46 PM, Linus Torvalds wrote:
> >On Mon, Oct 30, 2017 at 10:20 AM, Linus Torvalds
> ><torvalds@linux-foundation.org> wrote:
> >>I will add a "might_sleep()" to ioremap_page_range() itself, so that
> >>we get this warning more reliably and much eailer. Right now it has
> >>been hidden by the fact that most of the time the time the page tables
> >>may be already allocated, but even then it's broken.
> >Done. It doesn't report anything for me, so _hopefully_ the GHES
> >driver is the only one that does games like this. See commit
> >b39ab98e2f47 ("Mark 'ioremap_page_range()' as possibly sleeping").
> >
> >So now it should hopefully warn about this bad usage of page remapping
> >reliably, at least if you have CONFIG_DEBUG_ATOMIC_SLEEP enabled.
> >
> >Can somebody who has a working GHES setup (although Borislav seems to
> >think no such thing exists) verify?
> Hello Linus,
>
> I have verified that this flags the error for me every time ghes_proc() is used.
> But I also see it flagged in ARM PMU code:
>
> [ 7.381153] BUG: sleeping function called from invalid context at mm/slab.h:420
> [ 7.387625] in_atomic(): 0, irqs_disabled(): 128, pid: 11, name: cpuhp/0
> [ 7.394310] CPU: 0 PID: 11 Comm: cpuhp/0 Not tainted 4.14.0-rc7 #46
> [ 7.400559] Hardware name: Qualcomm Qualcomm Centriq(TM) 2400 Development
> Platform
> [ 7.414361] Call trace:
> [ 7.416797] [<ffff000008088b28>] dump_backtrace+0x0/0x270
> [ 7.422175] [<ffff000008088dbc>] show_stack+0x24/0x30
> [ 7.427211] [<ffff0000090d01f0>] dump_stack+0x98/0xb8
> [ 7.432246] [<ffff00000810118c>] ___might_sleep+0x104/0x128
> [ 7.437799] [<ffff000008101208>] __might_sleep+0x58/0x90
> [ 7.443097] [<ffff000008254a7c>] kmem_cache_alloc_trace+0x224/0x280
> [ 7.449347] [<ffff000008e9c938>] armpmu_alloc+0x30/0x168
> [ 7.454639] [<ffff000008e9d15c>] arm_pmu_acpi_cpu_starting+0x114/0x148
> [ 7.461151] [<ffff0000080d0f30>] cpuhp_invoke_callback+0xb8/0x760
> [ 7.467226] [<ffff0000080d1ec4>] cpuhp_thread_fun+0xa4/0x1b8
> [ 7.472872] [<ffff0000080f661c>] smpboot_thread_fn+0x174/0x250
> [ 7.478684] [<ffff0000080f18ec>] kthread+0x114/0x140
> [ 7.483632] [<ffff000008084774>] ret_from_fork+0x10/0x1c
I know Mark was doing some fixes in the ACPI notifier code here, so I've
added him to CC.
Will
next prev parent reply other threads:[~2017-10-31 10:38 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-23 11:03 Linux 4.14-rc6 Linus Torvalds
2017-10-29 22:51 ` Fengguang Wu
2017-10-29 23:02 ` [perf_event_ctx_lock_nested] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:97 Fengguang Wu
2017-10-30 8:42 ` Peter Zijlstra
2017-10-30 8:52 ` Fengguang Wu
2017-10-29 23:10 ` [o2nm_depend_item] BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:52 Fengguang Wu
2017-10-29 23:23 ` Fengguang Wu
2017-10-30 1:48 ` Eric Ren
2017-10-30 2:04 ` piaojun
2017-10-29 23:18 ` [ghes_copy_tofrom_phys] BUG: sleeping function called from invalid context at mm/page_alloc.c:4150 Fengguang Wu
2017-10-30 11:05 ` Borislav Petkov
2017-10-30 14:01 ` Tyler Baicar
2017-10-30 14:06 ` Borislav Petkov
2017-10-30 14:17 ` Tyler Baicar
2017-10-30 14:56 ` Borislav Petkov
2017-10-30 17:20 ` Linus Torvalds
2017-10-30 17:42 ` Borislav Petkov
2017-10-30 17:46 ` Linus Torvalds
2017-10-30 17:49 ` Will Deacon
2017-10-30 18:00 ` Linus Torvalds
2017-10-30 20:14 ` Tyler Baicar
2017-10-31 10:38 ` Will Deacon [this message]
2017-10-31 12:29 ` Mark Rutland
[not found] ` <20171106224635.qopgsszwxzuitkpf@wfg-t540p.sh.intel.com>
2017-11-06 22:57 ` [v4.14-rc8 ghes_copy_tofrom_phys] BUG: sleeping function called from invalid context at lib/ioremap.c:165 Linus Torvalds
2017-11-06 23:20 ` Fengguang Wu
2017-11-06 23:02 ` Borislav Petkov
2017-11-06 23:04 ` Rafael J. Wysocki
2017-11-07 13:39 ` Fengguang Wu
[not found] ` <20171106225354.6ucl4f4ipsjlntzl@wfg-t540p.sh.intel.com>
2017-11-06 23:12 ` [ata_scsi_offline_dev] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:238 Linus Torvalds
2017-11-07 0:12 ` Tejun Heo
2017-11-07 3:34 ` Martin K. Petersen
2017-11-07 6:55 ` Hannes Reinecke
2017-10-29 23:37 ` [pgtable_trans_huge_withdraw] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 Fengguang Wu
2017-10-30 9:19 ` Kirill A. Shutemov
2017-10-30 9:28 ` Fengguang Wu
2017-10-30 11:27 ` Kirill A. Shutemov
2017-10-30 11:58 ` Kirill A. Shutemov
2017-10-30 12:40 ` Zi Yan
2017-10-30 13:24 ` Kirill A. Shutemov
2017-10-29 23:48 ` [run_timer_softirq] BUG: unable to handle kernel paging request at 0000000000010007 Fengguang Wu
2017-10-30 19:29 ` Linus Torvalds
2017-10-30 20:37 ` Fengguang Wu
[not found] ` <20171109051905.pdlsyrbzrwlsjbrs@wfg-t540p.sh.intel.com>
2017-11-10 20:08 ` Linus Torvalds
2017-11-10 21:29 ` Thomas Gleixner
2017-11-11 15:35 ` Fengguang Wu
2017-10-30 6:27 ` Linux 4.14-rc6: WARNING: CPU: 9 PID: 5377 at arch/x86/events/intel/core.c:2228 intel_pmu_handle_irq+0x4a8/0x4c0 Fengguang Wu
2017-10-30 10:02 ` Peter Zijlstra
2017-10-30 22:49 ` Fengguang Wu
2017-10-31 14:57 ` Peter Zijlstra
2017-10-30 6:44 ` [migration_cpu_stop] WARNING: CPU: 0 PID: 11 at arch/x86/kernel/smp.c:128 native_smp_send_reschedule+0x69/0x9e Fengguang Wu
2017-10-30 7:00 ` [haswell_crtc_enable] WARNING: CPU: 3 PID: 109 at drivers/gpu/drm/drm_vblank.c:1066 drm_wait_one_vblank+0x18f/0x1a0 [drm] Fengguang Wu
2017-10-30 19:10 ` Linus Torvalds
2017-10-30 20:03 ` [Intel-gfx] " Rodrigo Vivi
2017-10-30 23:17 ` Fengguang Wu
2017-10-30 20:18 ` Fengguang Wu
2017-10-30 7:20 ` [btrfs] WARNING: CPU: 0 PID: 6379 at fs/direct-io.c:293 dio_complete+0x1d4/0x220 Fengguang Wu
2017-10-30 7:44 ` Eryu Guan
2017-10-31 0:10 ` Fengguang Wu
2017-10-31 6:54 ` Eryu Guan
2017-10-31 7:10 ` Fengguang Wu
2017-11-06 1:13 ` Eric Biggers
2017-11-13 19:13 ` Eric Biggers
2017-11-13 19:16 ` Jens Axboe
2017-11-13 19:21 ` Linus Torvalds
2017-11-13 21:56 ` Darrick J. Wong
2017-11-13 22:01 ` Linus Torvalds
2017-11-14 17:17 ` Theodore Ts'o
2017-10-31 15:13 ` Filipe Manana
2017-10-30 7:35 ` [locking/paravirt] static_key_disable_cpuslocked(): static key 'virt_spin_lock_key+0x0/0x20' used before call to jump_label_init() Fengguang Wu
2017-10-30 7:47 ` Juergen Gross
2017-10-30 8:38 ` Fengguang Wu
2017-10-30 9:56 ` Fengguang Wu
2017-10-30 8:43 ` Dou Liyang
2017-10-30 7:40 ` [pmem_attach_disk] WARNING: CPU: 46 PID: 518 at kernel/memremap.c:363 devm_memremap_pages+0x350/0x4b0 Fengguang Wu
2017-10-30 15:59 ` Dan Williams
2017-10-31 0:00 ` Fengguang Wu
2017-10-31 0:24 ` Dan Williams
2017-10-31 7:08 ` Fengguang Wu
2017-11-12 0:15 ` Theodore Ts'o
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