From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <54F9C407.5020602@ti.com> Date: Fri, 6 Mar 2015 10:13:11 -0500 From: Murali Karicheri MIME-Version: 1.0 To: Fengguang Wu CC: Bjorn Helgaas , LKP , , Subject: Re: [PCI] BUG: unable to handle kernel References: <20150306060631.GD28187@wfg-t540p.sh.intel.com> In-Reply-To: <20150306060631.GD28187@wfg-t540p.sh.intel.com> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Sender: linux-kernel-owner@vger.kernel.org List-ID: On 03/06/2015 01:06 AM, Fengguang Wu wrote: > Greetings, > > 0day kernel testing robot got the below dmesg and the first bad commit is > > git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git > > commit 0b2af171520e5d5e7d5b5f479b90a6a5014d9df6 > Author: Murali Karicheri > AuthorDate: Tue Mar 3 12:52:13 2015 -0500 > Commit: Bjorn Helgaas > CommitDate: Tue Mar 3 14:42:58 2015 -0600 > > PCI: Update DMA configuration from DT > > If there is a DT node available for the root bridge's parent device, use > the DMA configuration from that device node. For example, Keystone PCI > devices would require dma_pfn_offset to be set correctly in the device > structure of the PCI device in order to have the correct DMA mask. The DT > node will have dma-ranges defined for this. Also support using the DT > property dma-coherent to allow coherent DMA operation by the PCI device. > > Use the new helper function of_pci_dma_configure() to update the device DMA > configuration. This fixes DMA on systems where DMA addresses are a > constant offset from CPU physical addresses. > > Tested-by: Suravee Suthikulpanit (AMD Seattle) > Signed-off-by: Murali Karicheri > Signed-off-by: Bjorn Helgaas > Reviewed-by: Catalin Marinas > Acked-by: Will Deacon > CC: Joerg Roedel > CC: Grant Likely > CC: Rob Herring > CC: Russell King > CC: Arnd Bergmann > > +------------------------------------------+------------+------------+-----------------+ > | | bdc567f9c1 | 0b2af17152 | v4.0-rc2_030422 | > +------------------------------------------+------------+------------+-----------------+ > | boot_successes | 47 | 0 | 0 | > | boot_failures | 33 | 20 | 12 | > | page_allocation_failure:order:#,mode | 33 | | | > | backtrace:btrfs_test_extent_io | 33 | | | > | backtrace:init_btrfs_fs | 33 | | | > | backtrace:kernel_init_freeable | 33 | 20 | 12 | > | BUG:unable_to_handle_kernel | 0 | 20 | 12 | > | Oops | 0 | 20 | 12 | > | EIP_is_at_of_pci_dma_configure | 0 | 20 | 12 | > | Kernel_panic-not_syncing:Fatal_exception | 0 | 20 | 12 | > | backtrace:acpi_bus_scan | 0 | 20 | 12 | > | backtrace:acpi_scan_init | 0 | 20 | 12 | > | backtrace:acpi_init | 0 | 20 | 12 | > +------------------------------------------+------------+------------+-----------------+ > > [ 0.573023] pci_bus 0000:00: root bus resource [mem 0x14000000-0xfebfffff window] > [ 0.573381] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 > [ 0.573381] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 > [ 0.574397] BUG: unable to handle kernel > [ 0.574397] BUG: unable to handle kernel NULL pointer dereferenceNULL pointer dereference at 000001c4 > at 000001c4 > [ 0.575439] IP: > [ 0.575439] IP: [<79a20c33>] of_pci_dma_configure+0x33/0x70 > [<79a20c33>] of_pci_dma_configure+0x33/0x70 > [ 0.576231] *pde = 00000000 > [ 0.576231] *pde = 00000000 > > [ 0.576666] Oops: 0000 [#1] > [ 0.576666] Oops: 0000 [#1] SMP SMP > > [ 0.576666] Modules linked in: > [ 0.576666] Modules linked in: > > [ 0.576666] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.0.0-rc1-00006-g0b2af17 #6 > [ 0.576666] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.0.0-rc1-00006-g0b2af17 #6 > [ 0.576666] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014 > [ 0.576666] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014 > [ 0.576666] task: 78060000 ti: 78068000 task.ti: 78068000 > [ 0.576666] task: 78060000 ti: 78068000 task.ti: 78068000 > [ 0.576666] EIP: 0060:[<79a20c33>] EFLAGS: 00010246 CPU: 0 > [ 0.576666] EIP: 0060:[<79a20c33>] EFLAGS: 00010246 CPU: 0 > [ 0.576666] EIP is at of_pci_dma_configure+0x33/0x70 > [ 0.576666] EIP is at of_pci_dma_configure+0x33/0x70 > [ 0.576666] EAX: 00000000 EBX: 78011800 ECX: 00000000 EDX: 00000005 > [ 0.576666] EAX: 00000000 EBX: 78011800 ECX: 00000000 EDX: 00000005 > [ 0.576666] ESI: 781d8400 EDI: 781d8000 EBP: 78069cd0 ESP: 78069cc8 > [ 0.576666] ESI: 781d8400 EDI: 781d8000 EBP: 78069cd0 ESP: 78069cc8 > [ 0.576666] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > [ 0.576666] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > [ 0.576666] CR0: 8005003b CR2: 000001c4 CR3: 0229f000 CR4: 000006d0 > [ 0.576666] CR0: 8005003b CR2: 000001c4 CR3: 0229f000 CR4: 000006d0 > [ 0.576666] Stack: > [ 0.576666] Stack: > [ 0.576666] 78011800 > [ 0.576666] 78011800 78011860 78011860 78069d5c 78069d5c 7976c1ac 7976c1ac 00000002 00000002 78069ce8 78069ce8 0000002e 0000002e 00000000 00000000 > > [ 0.576666] 00001100 > [ 0.576666] 00001100 78011800 78011800 78011860 78011860 781d8000 781d8000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > > [ 0.576666] 00000000 > [ 0.576666] 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > > [ 0.576666] Call Trace: > [ 0.576666] Call Trace: > [ 0.576666] [<7976c1ac>] pci_device_add+0xbc/0x820 > [ 0.576666] [<7976c1ac>] pci_device_add+0xbc/0x820 > [ 0.576666] [<7976ca54>] pci_scan_single_device+0x144/0x1c0 > [ 0.576666] [<7976ca54>] pci_scan_single_device+0x144/0x1c0 > [ 0.576666] [<7976cb70>] pci_scan_slot+0xa0/0x230 > [ 0.576666] [<7976cb70>] pci_scan_slot+0xa0/0x230 > [ 0.576666] [<7976ea6a>] pci_scan_child_bus+0x5a/0x230 > [ 0.576666] [<7976ea6a>] pci_scan_child_bus+0x5a/0x230 > [ 0.576666] [<79894626>] ? dev_warn+0x36/0x50 > [ 0.576666] [<79894626>] ? dev_warn+0x36/0x50 > [ 0.576666] [<79a48cf5>] pci_acpi_scan_root+0x4c5/0x990 > [ 0.576666] [<79a48cf5>] pci_acpi_scan_root+0x4c5/0x990 > [ 0.576666] [<797c9be8>] acpi_pci_root_add+0x4fb/0x64d > [ 0.576666] [<797c9be8>] acpi_pci_root_add+0x4fb/0x64d > [ 0.576666] [<797be464>] ? acpi_scan_match_handler+0x9d/0x10e > [ 0.576666] [<797be464>] ? acpi_scan_match_handler+0x9d/0x10e > [ 0.576666] [<797c2a3d>] acpi_bus_attach+0x149/0x381 > [ 0.576666] [<797c2a3d>] acpi_bus_attach+0x149/0x381 > [ 0.576666] [<79bd0946>] ? mutex_unlock+0x16/0x30 > [ 0.576666] [<79bd0946>] ? mutex_unlock+0x16/0x30 > [ 0.576666] [<7989c2a0>] ? __driver_attach+0x140/0x140 > [ 0.576666] [<7989c2a0>] ? __driver_attach+0x140/0x140 > [ 0.576666] [<797c2be5>] acpi_bus_attach+0x2f1/0x381 > [ 0.576666] [<797c2be5>] acpi_bus_attach+0x2f1/0x381 > [ 0.576666] [<7989b94d>] ? device_attach+0x6d/0x120 > [ 0.576666] [<7989b94d>] ? device_attach+0x6d/0x120 > [ 0.576666] [<7989c2a0>] ? __driver_attach+0x140/0x140 > [ 0.576666] [<7989c2a0>] ? __driver_attach+0x140/0x140 > [ 0.576666] [<797c2be5>] acpi_bus_attach+0x2f1/0x381 > [ 0.576666] [<797c2be5>] acpi_bus_attach+0x2f1/0x381 > [ 0.576666] [<797c2d06>] acpi_bus_scan+0x91/0xa8 > [ 0.576666] [<797c2d06>] acpi_bus_scan+0x91/0xa8 > [ 0.576666] [<7a217b07>] acpi_scan_init+0x137/0x39d > [ 0.576666] [<7a217b07>] acpi_scan_init+0x137/0x39d > [ 0.576666] [<7a217695>] acpi_init+0x496/0x534 > [ 0.576666] [<7a217695>] acpi_init+0x496/0x534 > [ 0.576666] [<7a2171ff>] ? acpi_sleep_proc_init+0x5b/0x5b > [ 0.576666] [<7a2171ff>] ? acpi_sleep_proc_init+0x5b/0x5b > [ 0.576666] [<790005ae>] do_one_initcall+0x16e/0x3c0 > [ 0.576666] [<790005ae>] do_one_initcall+0x16e/0x3c0 > [ 0.576666] [<7a2171ff>] ? acpi_sleep_proc_init+0x5b/0x5b > [ 0.576666] [<7a2171ff>] ? acpi_sleep_proc_init+0x5b/0x5b > [ 0.576666] [<7a1b8afe>] kernel_init_freeable+0x263/0x3e4 > [ 0.576666] [<7a1b8afe>] kernel_init_freeable+0x263/0x3e4 > [ 0.576666] [<79bb7c49>] kernel_init+0x19/0x200 > [ 0.576666] [<79bb7c49>] kernel_init+0x19/0x200 > [ 0.576666] [<79bd5d01>] ret_from_kernel_thread+0x21/0x30 > [ 0.576666] [<79bd5d01>] ret_from_kernel_thread+0x21/0x30 > [ 0.576666] [<79bb7c30>] ? rest_init+0x180/0x180 > [ 0.576666] [<79bb7c30>] ? rest_init+0x180/0x180 > [ 0.576666] Code: > [ 0.576666] Code: 80 80 5c 5c c1 c1 7a 7a 01 01 89 89 5d 5d f8 f8 89 89 c3 c3 89 89 75 75 fc fc 83 83 15 15 84 84 5c 5c c1 c1 7a 7a 00 00 e8 e8 df df ec ec d4 d4 ff ff 83 83 05 05 88 88 5c 5c c1 c1 7a 7a 01 01 83 83 15 15 8c 8c 5c 5c c1 c1 7a 7a 00 00 89 89 c6 c6 8b 8b 00 00<8b> <8b> 90 90 c4 c4 01 01 00 00 00 00 8d 8d 43 43 60 60 e8 e8 1f 1f 94 94 ff ff ff ff 89 89 f0 f0 83 83 05 05 90 90 5c 5c c1 c1 > > [ 0.576666] EIP: [<79a20c33>] > [ 0.576666] EIP: [<79a20c33>] of_pci_dma_configure+0x33/0x70of_pci_dma_configure+0x33/0x70 SS:ESP 0068:78069cc8 > SS:ESP 0068:78069cc8 > [ 0.576666] CR2: 00000000000001c4 > [ 0.576666] CR2: 00000000000001c4 > [ 0.576666] ---[ end trace af448c13c817976d ]--- > [ 0.576666] ---[ end trace af448c13c817976d ]--- > > git bisect start f20f4567bfc741f16e0895f4c4e845e7c51e6818 13a7a6ac0a11197edcd0f756a035f472b42cdf8b -- > git bisect good 6a85284cccce49f687a505a7952fa3889b82628d # 16:02 20+ 19 Merge 'kees/yama/tip' into devel-hourly-2015030422 > git bisect bad e85ea728632a20c9830cbc5c67d64f8a302b452e # 16:05 0- 20 Merge 'tip/x86/asm' into devel-hourly-2015030422 > git bisect bad 0516a34d518ed4a1ae4261736d6678094fd46142 # 16:11 0- 20 Merge 'spi/for-next' into devel-hourly-2015030422 > git bisect bad d8ee2cead70b0d04c58d1a57299fe307f5616b7e # 16:49 0- 20 Merge 'sound/topic/hda-unbind' into devel-hourly-2015030422 > git bisect bad ccbd4806f70ac1599934b7c17582f44af02edca8 # 17:09 0- 20 Merge 'perf/tmp.perf/trace_ordered_events' into devel-hourly-2015030422 > git bisect good a8c718ae516eeb6366d899bae02ebb409ced5453 # 17:12 20+ 0 Merge 'mripard/sunxi/dt-for-4.1' into devel-hourly-2015030422 > git bisect bad 941b9d9416bbace6161718d173a526f9dfd10762 # 17:14 0- 20 Merge 'pci/pci/murali-v8' into devel-hourly-2015030422 > git bisect good 6675a601d72be408025e675599702e30a99188aa # 17:19 20+ 16 PCI: Add helper functions pci_get[put]_host_bridge_device() > git bisect bad 0b2af171520e5d5e7d5b5f479b90a6a5014d9df6 # 17:21 0- 20 PCI: Update DMA configuration from DT > git bisect good bdc567f9c1cb6a61100471afc95ee6200f0ba043 # 17:24 20+ 7 of/pci: Add of_pci_dma_configure() to update DMA configuration > # first bad commit: [0b2af171520e5d5e7d5b5f479b90a6a5014d9df6] PCI: Update DMA configuration from DT > git bisect good bdc567f9c1cb6a61100471afc95ee6200f0ba043 # 17:27 60+ 33 of/pci: Add of_pci_dma_configure() to update DMA configuration > # extra tests with DEBUG_INFO > git bisect bad 0b2af171520e5d5e7d5b5f479b90a6a5014d9df6 # 17:40 0- 60 PCI: Update DMA configuration from DT > # extra tests on HEAD of linux-devel/devel-hourly-2015030422 > git bisect bad f20f4567bfc741f16e0895f4c4e845e7c51e6818 # 17:41 0- 12 0day head guard for 'devel-hourly-2015030422' > # extra tests on tree/branch pci/pci/murali-v8 > git bisect bad da5cc6061aae665cc15835519838861437b9fdc7 # 17:56 0- 60 of: Calculate device DMA masks based on DT dma-range size > # extra tests with first bad commit reverted > # extra tests on tree/branch linus/master > git bisect good 6587457b4b3d663b237a0f95ddf6e67d1828c8ea # 18:08 60+ 60 Merge tag 'dma-buf-for-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/sumits/dma-buf > # extra tests on tree/branch next/master > > > This script may reproduce the error. > > ---------------------------------------------------------------------------- > #!/bin/bash > > kernel=$1 > > kvm=( > qemu-system-x86_64 > -cpu kvm64 > -enable-kvm > -kernel $kernel > -m 320 > -smp 2 > -net nic,vlan=1,model=e1000 > -net user,vlan=1 > -boot order=nc > -no-reboot > -watchdog i6300esb > -rtc base=localtime > -serial stdio > -display none > -monitor null > ) > > append=( > hung_task_panic=1 > earlyprintk=ttyS0,115200 > rd.udev.log-priority=err > systemd.log_target=journal > systemd.log_level=warning > debug > apic=debug > sysrq_always_enabled > rcupdate.rcu_cpu_stall_timeout=100 > panic=-1 > softlockup_panic=1 > nmi_watchdog=panic > oops=panic > load_ramdisk=2 > prompt_ramdisk=0 > console=ttyS0,115200 > console=tty0 > vga=normal > root=/dev/ram0 > rw > drbd.minor_count=8 > ) > > "${kvm[@]}" --append "${append[*]}" > ---------------------------------------------------------------------------- > > Thanks, > Fengguang Fengguang, Could you or someone point me to the DT file for this platform? I looked at the config file and it has CONFIG_OF enabled. Wondering if it has dma-ranges defined? This series was tested on ARM platforms that uses dma-ranges. If someone can point me to the DT file, this will give me a clue on what is going on here. -- Murali Karicheri Linux Kernel, Texas Instruments From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============4319024845984379926==" MIME-Version: 1.0 From: Murali Karicheri To: lkp@lists.01.org Subject: Re: [PCI] BUG: unable to handle kernel Date: Fri, 06 Mar 2015 10:13:11 -0500 Message-ID: <54F9C407.5020602@ti.com> In-Reply-To: <20150306060631.GD28187@wfg-t540p.sh.intel.com> List-Id: --===============4319024845984379926== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On 03/06/2015 01:06 AM, Fengguang Wu wrote: > Greetings, > > 0day kernel testing robot got the below dmesg and the first bad commit is > > git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git > > commit 0b2af171520e5d5e7d5b5f479b90a6a5014d9df6 > Author: Murali Karicheri > AuthorDate: Tue Mar 3 12:52:13 2015 -0500 > Commit: Bjorn Helgaas > CommitDate: Tue Mar 3 14:42:58 2015 -0600 > > PCI: Update DMA configuration from DT > > If there is a DT node available for the root bridge's parent device,= use > the DMA configuration from that device node. For example, Keystone = PCI > devices would require dma_pfn_offset to be set correctly in the devi= ce > structure of the PCI device in order to have the correct DMA mask. = The DT > node will have dma-ranges defined for this. Also support using the = DT > property dma-coherent to allow coherent DMA operation by the PCI dev= ice. > > Use the new helper function of_pci_dma_configure() to update the dev= ice DMA > configuration. This fixes DMA on systems where DMA addresses are a > constant offset from CPU physical addresses. > > Tested-by: Suravee Suthikulpanit (= AMD Seattle) > Signed-off-by: Murali Karicheri > Signed-off-by: Bjorn Helgaas > Reviewed-by: Catalin Marinas > Acked-by: Will Deacon > CC: Joerg Roedel > CC: Grant Likely > CC: Rob Herring > CC: Russell King > CC: Arnd Bergmann > > +------------------------------------------+------------+------------+---= --------------+ > | | bdc567f9c1 | 0b2af17152 | v4= .0-rc2_030422 | > +------------------------------------------+------------+------------+---= --------------+ > | boot_successes | 47 | 0 | 0 = | > | boot_failures | 33 | 20 | 12= | > | page_allocation_failure:order:#,mode | 33 | | = | > | backtrace:btrfs_test_extent_io | 33 | | = | > | backtrace:init_btrfs_fs | 33 | | = | > | backtrace:kernel_init_freeable | 33 | 20 | 12= | > | BUG:unable_to_handle_kernel | 0 | 20 | 12= | > | Oops | 0 | 20 | 12= | > | EIP_is_at_of_pci_dma_configure | 0 | 20 | 12= | > | Kernel_panic-not_syncing:Fatal_exception | 0 | 20 | 12= | > | backtrace:acpi_bus_scan | 0 | 20 | 12= | > | backtrace:acpi_scan_init | 0 | 20 | 12= | > | backtrace:acpi_init | 0 | 20 | 12= | > +------------------------------------------+------------+------------+---= --------------+ > > [ 0.573023] pci_bus 0000:00: root bus resource [mem 0x14000000-0xfebff= fff window] > [ 0.573381] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 > [ 0.573381] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 > [ 0.574397] BUG: unable to handle kernel > [ 0.574397] BUG: unable to handle kernel NULL pointer dereferenceNULL = pointer dereference at 000001c4 > at 000001c4 > [ 0.575439] IP: > [ 0.575439] IP: [<79a20c33>] of_pci_dma_configure+0x33/0x70 > [<79a20c33>] of_pci_dma_configure+0x33/0x70 > [ 0.576231] *pde =3D 00000000 > [ 0.576231] *pde =3D 00000000 > > [ 0.576666] Oops: 0000 [#1] > [ 0.576666] Oops: 0000 [#1] SMP SMP > > [ 0.576666] Modules linked in: > [ 0.576666] Modules linked in: > > [ 0.576666] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.0.0-rc1-00006-= g0b2af17 #6 > [ 0.576666] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.0.0-rc1-00006-= g0b2af17 #6 > [ 0.576666] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIO= S 1.7.5-20140531_083030-gandalf 04/01/2014 > [ 0.576666] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIO= S 1.7.5-20140531_083030-gandalf 04/01/2014 > [ 0.576666] task: 78060000 ti: 78068000 task.ti: 78068000 > [ 0.576666] task: 78060000 ti: 78068000 task.ti: 78068000 > [ 0.576666] EIP: 0060:[<79a20c33>] EFLAGS: 00010246 CPU: 0 > [ 0.576666] EIP: 0060:[<79a20c33>] EFLAGS: 00010246 CPU: 0 > [ 0.576666] EIP is at of_pci_dma_configure+0x33/0x70 > [ 0.576666] EIP is at of_pci_dma_configure+0x33/0x70 > [ 0.576666] EAX: 00000000 EBX: 78011800 ECX: 00000000 EDX: 00000005 > [ 0.576666] EAX: 00000000 EBX: 78011800 ECX: 00000000 EDX: 00000005 > [ 0.576666] ESI: 781d8400 EDI: 781d8000 EBP: 78069cd0 ESP: 78069cc8 > [ 0.576666] ESI: 781d8400 EDI: 781d8000 EBP: 78069cd0 ESP: 78069cc8 > [ 0.576666] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > [ 0.576666] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > [ 0.576666] CR0: 8005003b CR2: 000001c4 CR3: 0229f000 CR4: 000006d0 > [ 0.576666] CR0: 8005003b CR2: 000001c4 CR3: 0229f000 CR4: 000006d0 > [ 0.576666] Stack: > [ 0.576666] Stack: > [ 0.576666] 78011800 > [ 0.576666] 78011800 78011860 78011860 78069d5c 78069d5c 7976c1ac 797= 6c1ac 00000002 00000002 78069ce8 78069ce8 0000002e 0000002e 00000000 000000= 00 > > [ 0.576666] 00001100 > [ 0.576666] 00001100 78011800 78011800 78011860 78011860 781d8000 781= d8000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 000000= 00 > > [ 0.576666] 00000000 > [ 0.576666] 00000000 00000000 00000000 00000000 00000000 00000000 000= 00000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 000000= 00 > > [ 0.576666] Call Trace: > [ 0.576666] Call Trace: > [ 0.576666] [<7976c1ac>] pci_device_add+0xbc/0x820 > [ 0.576666] [<7976c1ac>] pci_device_add+0xbc/0x820 > [ 0.576666] [<7976ca54>] pci_scan_single_device+0x144/0x1c0 > [ 0.576666] [<7976ca54>] pci_scan_single_device+0x144/0x1c0 > [ 0.576666] [<7976cb70>] pci_scan_slot+0xa0/0x230 > [ 0.576666] [<7976cb70>] pci_scan_slot+0xa0/0x230 > [ 0.576666] [<7976ea6a>] pci_scan_child_bus+0x5a/0x230 > [ 0.576666] [<7976ea6a>] pci_scan_child_bus+0x5a/0x230 > [ 0.576666] [<79894626>] ? dev_warn+0x36/0x50 > [ 0.576666] [<79894626>] ? dev_warn+0x36/0x50 > [ 0.576666] [<79a48cf5>] pci_acpi_scan_root+0x4c5/0x990 > [ 0.576666] [<79a48cf5>] pci_acpi_scan_root+0x4c5/0x990 > [ 0.576666] [<797c9be8>] acpi_pci_root_add+0x4fb/0x64d > [ 0.576666] [<797c9be8>] acpi_pci_root_add+0x4fb/0x64d > [ 0.576666] [<797be464>] ? acpi_scan_match_handler+0x9d/0x10e > [ 0.576666] [<797be464>] ? acpi_scan_match_handler+0x9d/0x10e > [ 0.576666] [<797c2a3d>] acpi_bus_attach+0x149/0x381 > [ 0.576666] [<797c2a3d>] acpi_bus_attach+0x149/0x381 > [ 0.576666] [<79bd0946>] ? mutex_unlock+0x16/0x30 > [ 0.576666] [<79bd0946>] ? mutex_unlock+0x16/0x30 > [ 0.576666] [<7989c2a0>] ? __driver_attach+0x140/0x140 > [ 0.576666] [<7989c2a0>] ? __driver_attach+0x140/0x140 > [ 0.576666] [<797c2be5>] acpi_bus_attach+0x2f1/0x381 > [ 0.576666] [<797c2be5>] acpi_bus_attach+0x2f1/0x381 > [ 0.576666] [<7989b94d>] ? device_attach+0x6d/0x120 > [ 0.576666] [<7989b94d>] ? device_attach+0x6d/0x120 > [ 0.576666] [<7989c2a0>] ? __driver_attach+0x140/0x140 > [ 0.576666] [<7989c2a0>] ? __driver_attach+0x140/0x140 > [ 0.576666] [<797c2be5>] acpi_bus_attach+0x2f1/0x381 > [ 0.576666] [<797c2be5>] acpi_bus_attach+0x2f1/0x381 > [ 0.576666] [<797c2d06>] acpi_bus_scan+0x91/0xa8 > [ 0.576666] [<797c2d06>] acpi_bus_scan+0x91/0xa8 > [ 0.576666] [<7a217b07>] acpi_scan_init+0x137/0x39d > [ 0.576666] [<7a217b07>] acpi_scan_init+0x137/0x39d > [ 0.576666] [<7a217695>] acpi_init+0x496/0x534 > [ 0.576666] [<7a217695>] acpi_init+0x496/0x534 > [ 0.576666] [<7a2171ff>] ? acpi_sleep_proc_init+0x5b/0x5b > [ 0.576666] [<7a2171ff>] ? acpi_sleep_proc_init+0x5b/0x5b > [ 0.576666] [<790005ae>] do_one_initcall+0x16e/0x3c0 > [ 0.576666] [<790005ae>] do_one_initcall+0x16e/0x3c0 > [ 0.576666] [<7a2171ff>] ? acpi_sleep_proc_init+0x5b/0x5b > [ 0.576666] [<7a2171ff>] ? acpi_sleep_proc_init+0x5b/0x5b > [ 0.576666] [<7a1b8afe>] kernel_init_freeable+0x263/0x3e4 > [ 0.576666] [<7a1b8afe>] kernel_init_freeable+0x263/0x3e4 > [ 0.576666] [<79bb7c49>] kernel_init+0x19/0x200 > [ 0.576666] [<79bb7c49>] kernel_init+0x19/0x200 > [ 0.576666] [<79bd5d01>] ret_from_kernel_thread+0x21/0x30 > [ 0.576666] [<79bd5d01>] ret_from_kernel_thread+0x21/0x30 > [ 0.576666] [<79bb7c30>] ? rest_init+0x180/0x180 > [ 0.576666] [<79bb7c30>] ? rest_init+0x180/0x180 > [ 0.576666] Code: > [ 0.576666] Code: 80 80 5c 5c c1 c1 7a 7a 01 01 89 89 5d 5d f8 f8 89 8= 9 c3 c3 89 89 75 75 fc fc 83 83 15 15 84 84 5c 5c c1 c1 7a 7a 00 00 e8 e8 d= f df ec ec d4 d4 ff ff 83 83 05 05 88 88 5c 5c c1 c1 7a 7a 01 01 83 83 15 1= 5 8c 8c 5c 5c c1 c1 7a 7a 00 00 89 89 c6 c6 8b 8b 00 00<8b> <8b> 90 90 c4= c4 01 01 00 00 00 00 8d 8d 43 43 60 60 e8 e8 1f 1f 94 94 ff ff ff ff 89 89= f0 f0 83 83 05 05 90 90 5c 5c c1 c1 > > [ 0.576666] EIP: [<79a20c33>] > [ 0.576666] EIP: [<79a20c33>] of_pci_dma_configure+0x33/0x70of_pci_dma= _configure+0x33/0x70 SS:ESP 0068:78069cc8 > SS:ESP 0068:78069cc8 > [ 0.576666] CR2: 00000000000001c4 > [ 0.576666] CR2: 00000000000001c4 > [ 0.576666] ---[ end trace af448c13c817976d ]--- > [ 0.576666] ---[ end trace af448c13c817976d ]--- > > git bisect start f20f4567bfc741f16e0895f4c4e845e7c51e6818 13a7a6ac0a11197= edcd0f756a035f472b42cdf8b -- > git bisect good 6a85284cccce49f687a505a7952fa3889b82628d # 16:02 20+= 19 Merge 'kees/yama/tip' into devel-hourly-2015030422 > git bisect bad e85ea728632a20c9830cbc5c67d64f8a302b452e # 16:05 0-= 20 Merge 'tip/x86/asm' into devel-hourly-2015030422 > git bisect bad 0516a34d518ed4a1ae4261736d6678094fd46142 # 16:11 0-= 20 Merge 'spi/for-next' into devel-hourly-2015030422 > git bisect bad d8ee2cead70b0d04c58d1a57299fe307f5616b7e # 16:49 0-= 20 Merge 'sound/topic/hda-unbind' into devel-hourly-2015030422 > git bisect bad ccbd4806f70ac1599934b7c17582f44af02edca8 # 17:09 0-= 20 Merge 'perf/tmp.perf/trace_ordered_events' into devel-hourly-20150= 30422 > git bisect good a8c718ae516eeb6366d899bae02ebb409ced5453 # 17:12 20+= 0 Merge 'mripard/sunxi/dt-for-4.1' into devel-hourly-2015030422 > git bisect bad 941b9d9416bbace6161718d173a526f9dfd10762 # 17:14 0-= 20 Merge 'pci/pci/murali-v8' into devel-hourly-2015030422 > git bisect good 6675a601d72be408025e675599702e30a99188aa # 17:19 20+= 16 PCI: Add helper functions pci_get[put]_host_bridge_device() > git bisect bad 0b2af171520e5d5e7d5b5f479b90a6a5014d9df6 # 17:21 0-= 20 PCI: Update DMA configuration from DT > git bisect good bdc567f9c1cb6a61100471afc95ee6200f0ba043 # 17:24 20+= 7 of/pci: Add of_pci_dma_configure() to update DMA configuration > # first bad commit: [0b2af171520e5d5e7d5b5f479b90a6a5014d9df6] PCI: Updat= e DMA configuration from DT > git bisect good bdc567f9c1cb6a61100471afc95ee6200f0ba043 # 17:27 60+= 33 of/pci: Add of_pci_dma_configure() to update DMA configuration > # extra tests with DEBUG_INFO > git bisect bad 0b2af171520e5d5e7d5b5f479b90a6a5014d9df6 # 17:40 0-= 60 PCI: Update DMA configuration from DT > # extra tests on HEAD of linux-devel/devel-hourly-2015030422 > git bisect bad f20f4567bfc741f16e0895f4c4e845e7c51e6818 # 17:41 0-= 12 0day head guard for 'devel-hourly-2015030422' > # extra tests on tree/branch pci/pci/murali-v8 > git bisect bad da5cc6061aae665cc15835519838861437b9fdc7 # 17:56 0-= 60 of: Calculate device DMA masks based on DT dma-range size > # extra tests with first bad commit reverted > # extra tests on tree/branch linus/master > git bisect good 6587457b4b3d663b237a0f95ddf6e67d1828c8ea # 18:08 60+= 60 Merge tag 'dma-buf-for-4.0-rc3' of git://git.kernel.org/pub/scm/li= nux/kernel/git/sumits/dma-buf > # extra tests on tree/branch next/master > > > This script may reproduce the error. > > -------------------------------------------------------------------------= --- > #!/bin/bash > > kernel=3D$1 > > kvm=3D( > qemu-system-x86_64 > -cpu kvm64 > -enable-kvm > -kernel $kernel > -m 320 > -smp 2 > -net nic,vlan=3D1,model=3De1000 > -net user,vlan=3D1 > -boot order=3Dnc > -no-reboot > -watchdog i6300esb > -rtc base=3Dlocaltime > -serial stdio > -display none > -monitor null > ) > > append=3D( > hung_task_panic=3D1 > earlyprintk=3DttyS0,115200 > rd.udev.log-priority=3Derr > systemd.log_target=3Djournal > systemd.log_level=3Dwarning > debug > apic=3Ddebug > sysrq_always_enabled > rcupdate.rcu_cpu_stall_timeout=3D100 > panic=3D-1 > softlockup_panic=3D1 > nmi_watchdog=3Dpanic > oops=3Dpanic > load_ramdisk=3D2 > prompt_ramdisk=3D0 > console=3DttyS0,115200 > console=3Dtty0 > vga=3Dnormal > root=3D/dev/ram0 > rw > drbd.minor_count=3D8 > ) > > "${kvm[@]}" --append "${append[*]}" > -------------------------------------------------------------------------= --- > > Thanks, > Fengguang Fengguang, Could you or someone point me to the DT file for this platform? I looked = at the config file and it has CONFIG_OF enabled. Wondering if it has = dma-ranges defined? This series was tested on ARM platforms that uses = dma-ranges. If someone can point me to the DT file, this will give me a = clue on what is going on here. -- = Murali Karicheri Linux Kernel, Texas Instruments --===============4319024845984379926==--