Messages in this thread | | | Date | Sat, 2 Jun 2012 07:36:36 -0400 | Subject | Re: Bug in BUG: Bad page state in process work_for_cpu pfn:cf800 | From | Konrad Rzeszutek Wilk <> |
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On Thu, May 31, 2012 at 3:19 AM, Marek Szyprowski <m.szyprowski@samsung.com> wrote: > Hi Konrad, > > On Thursday, May 31, 2012 2:45 AM Konrad Rzeszutek Wilk wrote: > >> About two-three days ago I started getting this on one of the AMD >> machines I run nighly bootup test (full bootup log attached): >> [Note: This is baremetal] >> >> ehci_hcd 0000:00:02.1: reset hcc_params a086 caching frame 256/512/1024 park >> BUG: Bad page state in process work_for_cpu pfn:cf800 >> page:ffffea0002d64000 count:-1 mapcount:0 ing: (null) index:0x0 >> page flags: 0x100000000000000() >> Modules linked in: >> Pid: 1207, comm: work_for_cpu Not tainted 3.4.0upstream-09208-gaf56e0a #1 >> Call Trace: >> [<ffffffff81103eb7>] ? dump_page+0x97/0xf0 >> [<ffffffff811050bd>] bad_page+0xad/0x100 >> [<ffffffff811067a2>] get_page_from_freelist+0x712/0x850 >> [<ffffffff812916d8>] ? __const_udelay+0x28/0x30 >> [<ffffffff81107a82>] __alloc_pages_nodemask+0x162/0x900 >> [<ffffffff810a2975>] ? dequeue_task_fair+0xa5/0x330 >> [<ffffffff810367e2>] ? __switch_to+0x152/0x440 >> [<ffffffff8107ee37>] ? lock_timer_base+0x37/0x70 >> [<ffffffff8103c7ff>] dma_generic_alloc_coherent+0x10f/0x170 >> [<ffffffff81062e7e>] gart_alloc_coherent+0xee/0x120 >> [<ffffffff81137542>] dma_pool_alloc+0x102/0x2e0 >> [<ffffffff8109f240>] ? try_to_wake_up+0x310/0x310 >> [<ffffffff813f3dc7>] ehci_qh_alloc+0x47/0xf0 >> [<ffffffff813f81e7>] ehci_pci_setup+0x367/0xea0 >> [<ffffffff81389213>] ? device_pm_init+0x43/0x80 >> [<ffffffff813d3065>] ? usb_alloc_dev+0x2d5/0x330 >> [<ffffffff81002030>] ? do_one_initcall+0x30/0x170 >> [<ffffffff813db6a9>] usb_add_hcd+0x1e9/0x7a0 >> [<ffffffff813ea0fa>] usb_hcd_pci_probe+0x1ba/0x3a0 >> [<ffffffff81088890>] ? cwq_dec_nr_in_flight+0x90/0x90 >> [<ffffffff812ad3f2>] local_pci_probe+0x12/0x20 >> [<ffffffff810888a3>] do_work_for_cpu+0x13/0x30 >> [<ffffffff810906e6>] kthread+0x96/0xa0 >> [<ffffffff815b61e4>] kernel_thread_helper+0x4/0x10 >> [<ffffffff81090650>] ? kthread_freezable_should_stop+0x70/0x70 >> [<ffffffff815b61e0>] ? gs_change+0x13/0x13 >> Disabling lock debugging due to kernel taint >> BUG: Bad page state in process work_for_cpu pfn:cf801 >> >> I haven't actually run a git bisection, but the last git commit >> that does something in the gart code looks to be this one: >> >> commit baa676fcf8d555269bd0a5a2496782beee55824d >> Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> >> Date: Tue Mar 27 14:28:18 2012 +0200 >> >> X86 & IA64: adapt for dma_map_ops changes >> >> hence CC-ing on this e-email. > > I hardly see how this commit can cause such issue. It was a pure code refactoring (attributes > parameter has been added to alloc/free functions) without any change in actual code flow. Maybe > something has been changed in core mm code or elsewhere in the driver? 'Bad page state' sounds > rather bad and might be cause by some trashing in completely unrelated code...
Doing a git bisection points it to this one: is the first bad commit commit 0a2b9a6ea93650b8a00f9fd5ee8fdd25671e2df6 Author: Marek Szyprowski <m.szyprowski@samsung.com> Date: Thu Dec 29 13:09:51 2011 +0100
X86: integrate CMA with DMA-mapping subsystem
This patch adds support for CMA to dma-mapping subsystem for x86 architecture that uses common pci-dma/pci-nommu implementation. This allows to test CMA on KVM/QEMU and a lot of common x86 boxes.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> CC: Michal Nazarewicz <mina86@mina86.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
:040000 040000 be152c4e3a5641fbd6dfc2f8faf3e634f47bd94e 4e5424f0b11ff1fead974e6c4ea7341b046cc960 M arch
[konrad@build linux]$ git bisect log git bisect start # good: [b5f4035adfffbcc6b478de5b8c44b618b3124aff] Merge tag 'stable/for-linus-3.5-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen git bisect good b5f4035adfffbcc6b478de5b8c44b618b3124aff # bad: [da89fb165e5e51a2ec1ff8a0ff6bc052d1068184] Merge tag 'tag-for-linus-3.5' of git://git.linaro.org/people/sumitsemwal/linux-dma-buf git bisect bad da89fb165e5e51a2ec1ff8a0ff6bc052d1068184 # good: [ece78b7df734726e790dcab207f463401ff80440] Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs git bisect good ece78b7df734726e790dcab207f463401ff80440 # good: [58823de9d2f1265030d0d06cb03cc2a551994398] Merge tag 'hda-switcheroo' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound git bisect good 58823de9d2f1265030d0d06cb03cc2a551994398 # bad: [0f51596bd39a5c928307ffcffc9ba07f90f42a8b] Merge branch 'for-next-arm-dma' into for-linus git bisect bad 0f51596bd39a5c928307ffcffc9ba07f90f42a8b # bad: [0a2b9a6ea93650b8a00f9fd5ee8fdd25671e2df6] X86: integrate CMA with DMA-mapping subsystem git bisect bad 0a2b9a6ea93650b8a00f9fd5ee8fdd25671e2df6 # good: [6d4a49160de2c684fb59fa627bce80e200224331] mm: page_alloc: change fallbacks array handling git bisect good 6d4a49160de2c684fb59fa627bce80e200224331 # good: [cfd3da1e49bb95c355c01c0f502d657deb3d34a4] mm: Serialize access to min_free_kbytes git bisect good cfd3da1e49bb95c355c01c0f502d657deb3d34a4 # good: [49f223a9cd96c7293d7258ff88c2bdf83065f69c] mm: trigger page reclaim in alloc_contig_range() to stabilise watermarks git bisect good 49f223a9cd96c7293d7258ff88c2bdf83065f69c # good: [c64be2bb1c6eb43c838b2c6d57b074078be208dd] drivers: add Contiguous Memory Allocator git bisect good c64be2bb1c6eb43c838b2c6d57b074078be208dd
> >> Was wondering if other people had seen something similar to this? > > Best regards > -- > Marek Szyprowski > Samsung Poland R&D Center > > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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