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<m-karicheri2@xxxxxx>
AuthorDate: Tue Mar 3 12:52:13 2015 -0500
Commit: Bjorn Helgaas<bhelgaas@xxxxxxxxxx>
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<Suravee.Suthikulpanit@xxxxxxx> (AMD Seattle)
Signed-off-by: Murali Karicheri<m-karicheri2@xxxxxx>
Signed-off-by: Bjorn Helgaas<bhelgaas@xxxxxxxxxx>
Reviewed-by: Catalin Marinas<catalin.marinas@xxxxxxx>
Acked-by: Will Deacon<will.deacon@xxxxxxx>
CC: Joerg Roedel<joro@xxxxxxxxxx>
CC: Grant Likely<grant.likely@xxxxxxxxxx>
CC: Rob Herring<robh+dt@xxxxxxxxxx>
CC: Russell King<linux@xxxxxxxxxxxxxxxx>
CC: Arnd Bergmann<arnd@xxxxxxxx>
+------------------------------------------+------------+------------+-----------------+
| | 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
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