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Date: Sun, 29 Aug 2010 19:32:16 +0200
From: Ingo Molnar <mingo@...e.hu>
To: "H. Peter Anvin" <hpa@...or.com>,
Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc: linux-kernel@...r.kernel.org, Joerg Roedel <joerg.roedel@....com>,
FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
Thomas Gleixner <tglx@...utronix.de>
Subject: pci_iommu_init() crash
FYI, -tip testing found a new boot crash, caused by the new x86/iommu
commits:
6f44d03: x86, doc: Adding comments about .iommu_table and its neighbors.
ee1f284: x86, iommu: Utilize the IOMMU_INIT macros functionality.
4db77ff: x86, VT-d: Make Intel VT-d IOMMU use IOMMU_INIT_* macros.
22e6daf: x86, GART/AMD-VI: Make AMD GART and IOMMU use IOMMU_INIT_* macros.
d2aa232: x86, calgary: Make Calgary IOMMU use IOMMU_INIT_* macros.
5cb3a26: x86, xen-swiotlb: Make Xen-SWIOTLB use IOMMU_INIT_* macros.
c116c54: x86, swiotlb: Make SWIOTLB use IOMMU_INIT_* macros.
efa631c: x86, swiotlb: Simplify SWIOTLB pci_swiotlb_detect routine.
5bef80a: x86, iommu: Add proper dependency sort routine (and sanity check).
480125b: x86, iommu: Make all IOMMU's detection routines return a value.
0444ad9: x86, iommu: Add IOMMU_INIT macros, .iommu_table section, and iommu_table_entry structure
Crashlog is below, config attached. I've excluded x86/iommu from
tip:master for now.
Thanks,
Ingo
pci 0000:00:0b.0: Found disabled HT MSI Mapping
pci 0000:00:00.0: Found enabled HT MSI Mapping
pci 0000:00:00.0: Found enabled HT MSI Mapping
pci 0000:00:0c.0: Found disabled HT MSI Mapping
pci 0000:00:00.0: Found enabled HT MSI Mapping
pci 0000:00:00.0: Found enabled HT MSI Mapping
pci 0000:00:0d.0: Found disabled HT MSI Mapping
pci 0000:00:00.0: Found enabled HT MSI Mapping
pci 0000:00:00.0: Found enabled HT MSI Mapping
pci 0000:00:0e.0: Found disabled HT MSI Mapping
pci 0000:00:00.0: Found enabled HT MSI Mapping
pci 0000:01:00.0: Boot video device
PCI: CLS 32 bytes, default 64
initcall pci_apply_final_quirks+0x0/0xe6 returned 0 after 58593 usecs
calling default_rootfs+0x0/0x65 @ 1
initcall default_rootfs+0x0/0x65 returned 0 after 0 usecs
calling pci_iommu_init+0x0/0x48 @ 1
DMA-API: preallocated 32768 debug entries
DMA-API: debugging enabled by kernel config
BUG: unable to handle kernel paging request at 19da8955
IP: [<f4ffffff>] 0xf4ffffff
*pde = 00000000
Oops: 0002 [#1] SMP DEBUG_PAGEALLOC
last sysfs file:
Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.36-rc3-tip-01230-ga953007-dirty #30737 A8N-E/System Product Name
EIP: 0060:[<f4ffffff>] EFLAGS: 00010207 CPU: 0
EIP is at 0xf4ffffff
EAX: e8e58955 EBX: c1473a69 ECX: 00000000 EDX: 00000000
ESI: 00000000 EDI: 00000002 EBP: f5c49fa8 ESP: f5c49fa0
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process swapper (pid: 1, ti=f5c48000 task=f5c40000 task.ti=f5c48000)
Stack:
c141a6c1 818a6e7e f5c49fd0 c100104c c13595c7 c141a689 00000001 00000000
<0> c141a689 c146ab1c 00000002 00000002 f5c49fe4 c1417340 00000000 c1417206
<0> 00000000 00000000 c1002c82 00000000 00000000 00000000 00000000 00000000
Call Trace:
[<c141a6c1>] ? pci_iommu_init+0x38/0x48
[<c100104c>] ? do_one_initcall+0x47/0x121
[<c141a689>] ? pci_iommu_init+0x0/0x48
[<c141a689>] ? pci_iommu_init+0x0/0x48
[<c1417340>] ? kernel_init+0x13a/0x1bb
[<c1417206>] ? kernel_init+0x0/0x1bb
[<c1002c82>] ? kernel_thread_helper+0x6/0x10
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 90 00 00 f5 30 ff ff f5 00 00 00 00 00 00 00 00 00 00 00 00
EIP: [<f4ffffff>] 0xf4ffffff SS:ESP 0068:f5c49fa0
CR2: 0000000019da8955
---[ end trace e93713a9d40cd06c ]---
Kernel panic - not syncing: Fatal exception
Pid: 1, comm: swapper Tainted: G D 2.6.36-rc3-tip-01230-ga953007-dirty #30737
Call Trace:
[<c128bba3>] ? printk+0xf/0x14
[<c128ba91>] panic+0x50/0x153
[<c100506c>] oops_end+0x96/0xa5
[<c1017e5d>] no_context+0x110/0x11a
[<c1017f5a>] __bad_area_nosemaphore+0xf3/0xfb
[<c10181cb>] ? do_page_fault+0x0/0x251
[<c1017f6f>] bad_area_nosemaphore+0xd/0x10
[<c10182d9>] do_page_fault+0x10e/0x251
[<c10181cb>] ? do_page_fault+0x0/0x251
[<c128e97c>] error_code+0x6c/0x74
[<c141a6c1>] ? pci_iommu_init+0x38/0x48
[<c100104c>] do_one_initcall+0x47/0x121
[<c141a689>] ? pci_iommu_init+0x0/0x48
[<c141a689>] ? pci_iommu_init+0x0/0x48
[<c1417340>] kernel_init+0x13a/0x1bb
[<c1417206>] ? kernel_init+0x0/0x1bb
[<c1002c82>] kernel_thread_helper+0x6/0x10
Rebooting in 1 seconds..Press any key to enter the menu
View attachment "config" of type "text/plain" (64534 bytes)
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