Re: [mm] BUG: Int 6: CR2 (null)
Hello,
On 2014-10-23 08:03, Weijie Yang wrote:
On Thu, Oct 9, 2014 at 10:04 AM, Fengguang Wu wrote:
FYI, we noticed the below changes on
git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 478e86d7c8c5f41e29abb81b05b459d24bdc71a2 ("mm: cma: adjust address limit to
avoid hitting low/high memory boundary")
+--+++
| | 81febe58a8 | 478e86d7c8 |
+--+++
| boot_successes | 10 | 0 |
| boot_failures| 5 | 10 |
| kernel_BUG_at_arch/x86/mm/physaddr.c | 5 ||
| invalid_opcode | 5 ||
| EIP_is_at__phys_addr | 5 ||
| Kernel_panic-not_syncing:Fatal_exception | 5 ||
| backtrace:vm_mmap_pgoff | 5 ||
| backtrace:SyS_mmap_pgoff | 5 ||
| BUG:Int_CR2(null)| 0 | 10 |
+--+++
[0.00] BRK [0x025ee000, 0x025eefff] PGTABLE
[0.00] cma: dma_contiguous_reserve(limit 13ffe000)
[0.00] cma: dma_contiguous_reserve: reserving 31 MiB for global area
[0.00] BUG: Int 6: CR2 (null)
[0.00] EDI c000 ESI (null) EBP 41c11ea4 EBX 425cc101
[0.00] ESP 41c11e98 ES 007b DS 007b
[0.00] EDX 0001 ECX (null) EAX 41cd8150
[0.00] vec 0006 err (null) EIP 41072227 CS 0060 flg
00210002
[0.00] Stack: 425cc150 (null) (null) 41c11ef4 41d4ee4d (null)
13ffe000 41c11ec4
[0.00]41c2d900 (null) 13ffe000 (null) 4185793e 002e
410c2982 41c11f00
[0.00]410c2df5 (null) (null) (null) 425cc150 00013efe
(null) 41c11f28
[0.00] CPU: 0 PID: 0 Comm: swapper Not tainted 3.17.0-next-20141008 #815
[0.00] 425cc101 41c11e48 41850786 41c11ea4 41d2b1db 41d95f71
0006
[0.00] c000 41c11ea4 425cc101 41c11e98 007b
007b
[0.00] 0001 41cd8150 0006 41072227 0060
00210002
[0.00] Call Trace:
[0.00] [<41850786>] dump_stack+0x16/0x18
[0.00] [<41d2b1db>] early_idt_handler+0x6b/0x6b
[0.00] [<41072227>] ? __phys_addr+0x2e/0xca
[0.00] [<41d4ee4d>] cma_declare_contiguous+0x3c/0x2d7
[0.00] [<4185793e>] ? _raw_spin_unlock_irqrestore+0x59/0x91
[0.00] [<410c2982>] ? wake_up_klogd+0x8/0x33
[0.00] [<410c2df5>] ? console_unlock+0x448/0x461
[0.00] [<41d6d359>] dma_contiguous_reserve_area+0x27/0x47
[0.00] [<41d6d4d1>] dma_contiguous_reserve+0x158/0x163
[0.00] [<41d33e0f>] setup_arch+0x79b/0xc68
[0.00] [<4184c0b4>] ? printk+0x1c/0x1e
[0.00] [<41d2b7cf>] start_kernel+0x9c/0x456
[0.00] [<41d2b2ca>] i386_start_kernel+0x79/0x7d
I notice that code has been merged into mainline kernel without fix,
maybe fengguang's mail was missed.
I review the code, dma_contiguous_reserve() is called before initmem_init(),
so the variable high_memory is not initialized and calculated by
__pa(high_memory),
in x86 arch high_memory is initialized after dma_contiguous_reserve(), while
in arm arch high_memory is initialized before dma_contiguous_reserve(),
I think that is the reason which causes the BUG in x86.
However, I'm not familiar with system init sequence, so I send this
notice mail rather than a patch :-(
Thanks for your analysis. I agree that the simplest way of fixing this
issue is
to move dma_contiguous_reserve() after initmem_init(). Could you prepare
such patch?
Best regards
--
Marek Szyprowski, PhD
Samsung R Institute Poland
--
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More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Re: [mm] BUG: Int 6: CR2 (null)
On Thu, Oct 9, 2014 at 10:04 AM, Fengguang Wu wrote:
> Hi Marek,
>
> FYI, we noticed the below changes on
>
> git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> commit 478e86d7c8c5f41e29abb81b05b459d24bdc71a2 ("mm: cma: adjust address
> limit to avoid hitting low/high memory boundary")
>
>
> +--+++
> | | 81febe58a8 | 478e86d7c8 |
> +--+++
> | boot_successes | 10 | 0 |
> | boot_failures| 5 | 10 |
> | kernel_BUG_at_arch/x86/mm/physaddr.c | 5 ||
> | invalid_opcode | 5 ||
> | EIP_is_at__phys_addr | 5 ||
> | Kernel_panic-not_syncing:Fatal_exception | 5 ||
> | backtrace:vm_mmap_pgoff | 5 ||
> | backtrace:SyS_mmap_pgoff | 5 ||
> | BUG:Int_CR2(null)| 0 | 10 |
> +--+++
>
> [0.00] BRK [0x025ee000, 0x025eefff] PGTABLE
> [0.00] cma: dma_contiguous_reserve(limit 13ffe000)
> [0.00] cma: dma_contiguous_reserve: reserving 31 MiB for global area
> [0.00] BUG: Int 6: CR2 (null)
> [0.00] EDI c000 ESI (null) EBP 41c11ea4 EBX 425cc101
> [0.00] ESP 41c11e98 ES 007b DS 007b
> [0.00] EDX 0001 ECX (null) EAX 41cd8150
> [0.00] vec 0006 err (null) EIP 41072227 CS 0060
> flg 00210002
> [0.00] Stack: 425cc150 (null) (null) 41c11ef4 41d4ee4d (null)
> 13ffe000 41c11ec4
> [0.00]41c2d900 (null) 13ffe000 (null) 4185793e 002e
> 410c2982 41c11f00
> [0.00]410c2df5 (null) (null) (null) 425cc150 00013efe
> (null) 41c11f28
> [0.00] CPU: 0 PID: 0 Comm: swapper Not tainted 3.17.0-next-20141008
> #815
> [0.00] 425cc101 41c11e48 41850786 41c11ea4 41d2b1db
> 41d95f71 0006
> [0.00] c000 41c11ea4 425cc101 41c11e98
> 007b 007b
> [0.00] 0001 41cd8150 0006 41072227
> 0060 00210002
> [0.00] Call Trace:
> [0.00] [<41850786>] dump_stack+0x16/0x18
> [0.00] [<41d2b1db>] early_idt_handler+0x6b/0x6b
> [0.00] [<41072227>] ? __phys_addr+0x2e/0xca
> [0.00] [<41d4ee4d>] cma_declare_contiguous+0x3c/0x2d7
> [0.00] [<4185793e>] ? _raw_spin_unlock_irqrestore+0x59/0x91
> [0.00] [<410c2982>] ? wake_up_klogd+0x8/0x33
> [0.00] [<410c2df5>] ? console_unlock+0x448/0x461
> [0.00] [<41d6d359>] dma_contiguous_reserve_area+0x27/0x47
> [0.00] [<41d6d4d1>] dma_contiguous_reserve+0x158/0x163
> [0.00] [<41d33e0f>] setup_arch+0x79b/0xc68
> [0.00] [<4184c0b4>] ? printk+0x1c/0x1e
> [0.00] [<41d2b7cf>] start_kernel+0x9c/0x456
> [0.00] [<41d2b2ca>] i386_start_kernel+0x79/0x7d
>
I notice that code has been merged into mainline kernel without fix,
maybe fengguang's mail was missed.
I review the code, dma_contiguous_reserve() is called before initmem_init(),
so the variable high_memory is not initialized and calculated by
__pa(high_memory),
in x86 arch high_memory is initialized after dma_contiguous_reserve(), while
in arm arch high_memory is initialized before dma_contiguous_reserve(),
I think that is the reason which causes the BUG in x86.
However, I'm not familiar with system init sequence, so I send this
notice mail rather than a patch :-(
cc more people
>
> Thanks,
> Fengguang
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Re: [mm] BUG: Int 6: CR2 (null)
On Thu, Oct 9, 2014 at 10:04 AM, Fengguang Wu fengguang...@intel.com wrote: Hi Marek, FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit 478e86d7c8c5f41e29abb81b05b459d24bdc71a2 (mm: cma: adjust address limit to avoid hitting low/high memory boundary) +--+++ | | 81febe58a8 | 478e86d7c8 | +--+++ | boot_successes | 10 | 0 | | boot_failures| 5 | 10 | | kernel_BUG_at_arch/x86/mm/physaddr.c | 5 || | invalid_opcode | 5 || | EIP_is_at__phys_addr | 5 || | Kernel_panic-not_syncing:Fatal_exception | 5 || | backtrace:vm_mmap_pgoff | 5 || | backtrace:SyS_mmap_pgoff | 5 || | BUG:Int_CR2(null)| 0 | 10 | +--+++ [0.00] BRK [0x025ee000, 0x025eefff] PGTABLE [0.00] cma: dma_contiguous_reserve(limit 13ffe000) [0.00] cma: dma_contiguous_reserve: reserving 31 MiB for global area [0.00] BUG: Int 6: CR2 (null) [0.00] EDI c000 ESI (null) EBP 41c11ea4 EBX 425cc101 [0.00] ESP 41c11e98 ES 007b DS 007b [0.00] EDX 0001 ECX (null) EAX 41cd8150 [0.00] vec 0006 err (null) EIP 41072227 CS 0060 flg 00210002 [0.00] Stack: 425cc150 (null) (null) 41c11ef4 41d4ee4d (null) 13ffe000 41c11ec4 [0.00]41c2d900 (null) 13ffe000 (null) 4185793e 002e 410c2982 41c11f00 [0.00]410c2df5 (null) (null) (null) 425cc150 00013efe (null) 41c11f28 [0.00] CPU: 0 PID: 0 Comm: swapper Not tainted 3.17.0-next-20141008 #815 [0.00] 425cc101 41c11e48 41850786 41c11ea4 41d2b1db 41d95f71 0006 [0.00] c000 41c11ea4 425cc101 41c11e98 007b 007b [0.00] 0001 41cd8150 0006 41072227 0060 00210002 [0.00] Call Trace: [0.00] [41850786] dump_stack+0x16/0x18 [0.00] [41d2b1db] early_idt_handler+0x6b/0x6b [0.00] [41072227] ? __phys_addr+0x2e/0xca [0.00] [41d4ee4d] cma_declare_contiguous+0x3c/0x2d7 [0.00] [4185793e] ? _raw_spin_unlock_irqrestore+0x59/0x91 [0.00] [410c2982] ? wake_up_klogd+0x8/0x33 [0.00] [410c2df5] ? console_unlock+0x448/0x461 [0.00] [41d6d359] dma_contiguous_reserve_area+0x27/0x47 [0.00] [41d6d4d1] dma_contiguous_reserve+0x158/0x163 [0.00] [41d33e0f] setup_arch+0x79b/0xc68 [0.00] [4184c0b4] ? printk+0x1c/0x1e [0.00] [41d2b7cf] start_kernel+0x9c/0x456 [0.00] [41d2b2ca] i386_start_kernel+0x79/0x7d I notice that code has been merged into mainline kernel without fix, maybe fengguang's mail was missed. I review the code, dma_contiguous_reserve() is called before initmem_init(), so the variable high_memory is not initialized and calculated by __pa(high_memory), in x86 arch high_memory is initialized after dma_contiguous_reserve(), while in arm arch high_memory is initialized before dma_contiguous_reserve(), I think that is the reason which causes the BUG in x86. However, I'm not familiar with system init sequence, so I send this notice mail rather than a patch :-( cc more people Thanks, Fengguang -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [mm] BUG: Int 6: CR2 (null)
Hello, On 2014-10-23 08:03, Weijie Yang wrote: On Thu, Oct 9, 2014 at 10:04 AM, Fengguang Wu fengguang...@intel.com wrote: FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit 478e86d7c8c5f41e29abb81b05b459d24bdc71a2 (mm: cma: adjust address limit to avoid hitting low/high memory boundary) +--+++ | | 81febe58a8 | 478e86d7c8 | +--+++ | boot_successes | 10 | 0 | | boot_failures| 5 | 10 | | kernel_BUG_at_arch/x86/mm/physaddr.c | 5 || | invalid_opcode | 5 || | EIP_is_at__phys_addr | 5 || | Kernel_panic-not_syncing:Fatal_exception | 5 || | backtrace:vm_mmap_pgoff | 5 || | backtrace:SyS_mmap_pgoff | 5 || | BUG:Int_CR2(null)| 0 | 10 | +--+++ [0.00] BRK [0x025ee000, 0x025eefff] PGTABLE [0.00] cma: dma_contiguous_reserve(limit 13ffe000) [0.00] cma: dma_contiguous_reserve: reserving 31 MiB for global area [0.00] BUG: Int 6: CR2 (null) [0.00] EDI c000 ESI (null) EBP 41c11ea4 EBX 425cc101 [0.00] ESP 41c11e98 ES 007b DS 007b [0.00] EDX 0001 ECX (null) EAX 41cd8150 [0.00] vec 0006 err (null) EIP 41072227 CS 0060 flg 00210002 [0.00] Stack: 425cc150 (null) (null) 41c11ef4 41d4ee4d (null) 13ffe000 41c11ec4 [0.00]41c2d900 (null) 13ffe000 (null) 4185793e 002e 410c2982 41c11f00 [0.00]410c2df5 (null) (null) (null) 425cc150 00013efe (null) 41c11f28 [0.00] CPU: 0 PID: 0 Comm: swapper Not tainted 3.17.0-next-20141008 #815 [0.00] 425cc101 41c11e48 41850786 41c11ea4 41d2b1db 41d95f71 0006 [0.00] c000 41c11ea4 425cc101 41c11e98 007b 007b [0.00] 0001 41cd8150 0006 41072227 0060 00210002 [0.00] Call Trace: [0.00] [41850786] dump_stack+0x16/0x18 [0.00] [41d2b1db] early_idt_handler+0x6b/0x6b [0.00] [41072227] ? __phys_addr+0x2e/0xca [0.00] [41d4ee4d] cma_declare_contiguous+0x3c/0x2d7 [0.00] [4185793e] ? _raw_spin_unlock_irqrestore+0x59/0x91 [0.00] [410c2982] ? wake_up_klogd+0x8/0x33 [0.00] [410c2df5] ? console_unlock+0x448/0x461 [0.00] [41d6d359] dma_contiguous_reserve_area+0x27/0x47 [0.00] [41d6d4d1] dma_contiguous_reserve+0x158/0x163 [0.00] [41d33e0f] setup_arch+0x79b/0xc68 [0.00] [4184c0b4] ? printk+0x1c/0x1e [0.00] [41d2b7cf] start_kernel+0x9c/0x456 [0.00] [41d2b2ca] i386_start_kernel+0x79/0x7d I notice that code has been merged into mainline kernel without fix, maybe fengguang's mail was missed. I review the code, dma_contiguous_reserve() is called before initmem_init(), so the variable high_memory is not initialized and calculated by __pa(high_memory), in x86 arch high_memory is initialized after dma_contiguous_reserve(), while in arm arch high_memory is initialized before dma_contiguous_reserve(), I think that is the reason which causes the BUG in x86. However, I'm not familiar with system init sequence, so I send this notice mail rather than a patch :-( Thanks for your analysis. I agree that the simplest way of fixing this issue is to move dma_contiguous_reserve() after initmem_init(). Could you prepare such patch? Best regards -- Marek Szyprowski, PhD Samsung RD Institute Poland -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[mm] BUG: Int 6: CR2 (null)
Hi Marek,
FYI, we noticed the below changes on
git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 478e86d7c8c5f41e29abb81b05b459d24bdc71a2 ("mm: cma: adjust address limit
to avoid hitting low/high memory boundary")
+--+++
| | 81febe58a8 | 478e86d7c8 |
+--+++
| boot_successes | 10 | 0 |
| boot_failures| 5 | 10 |
| kernel_BUG_at_arch/x86/mm/physaddr.c | 5 ||
| invalid_opcode | 5 ||
| EIP_is_at__phys_addr | 5 ||
| Kernel_panic-not_syncing:Fatal_exception | 5 ||
| backtrace:vm_mmap_pgoff | 5 ||
| backtrace:SyS_mmap_pgoff | 5 ||
| BUG:Int_CR2(null)| 0 | 10 |
+--+++
[0.00] BRK [0x025ee000, 0x025eefff] PGTABLE
[0.00] cma: dma_contiguous_reserve(limit 13ffe000)
[0.00] cma: dma_contiguous_reserve: reserving 31 MiB for global area
[0.00] BUG: Int 6: CR2 (null)
[0.00] EDI c000 ESI (null) EBP 41c11ea4 EBX 425cc101
[0.00] ESP 41c11e98 ES 007b DS 007b
[0.00] EDX 0001 ECX (null) EAX 41cd8150
[0.00] vec 0006 err (null) EIP 41072227 CS 0060 flg
00210002
[0.00] Stack: 425cc150 (null) (null) 41c11ef4 41d4ee4d (null)
13ffe000 41c11ec4
[0.00]41c2d900 (null) 13ffe000 (null) 4185793e 002e
410c2982 41c11f00
[0.00]410c2df5 (null) (null) (null) 425cc150 00013efe
(null) 41c11f28
[0.00] CPU: 0 PID: 0 Comm: swapper Not tainted 3.17.0-next-20141008 #815
[0.00] 425cc101 41c11e48 41850786 41c11ea4 41d2b1db 41d95f71
0006
[0.00] c000 41c11ea4 425cc101 41c11e98 007b
007b
[0.00] 0001 41cd8150 0006 41072227 0060
00210002
[0.00] Call Trace:
[0.00] [<41850786>] dump_stack+0x16/0x18
[0.00] [<41d2b1db>] early_idt_handler+0x6b/0x6b
[0.00] [<41072227>] ? __phys_addr+0x2e/0xca
[0.00] [<41d4ee4d>] cma_declare_contiguous+0x3c/0x2d7
[0.00] [<4185793e>] ? _raw_spin_unlock_irqrestore+0x59/0x91
[0.00] [<410c2982>] ? wake_up_klogd+0x8/0x33
[0.00] [<410c2df5>] ? console_unlock+0x448/0x461
[0.00] [<41d6d359>] dma_contiguous_reserve_area+0x27/0x47
[0.00] [<41d6d4d1>] dma_contiguous_reserve+0x158/0x163
[0.00] [<41d33e0f>] setup_arch+0x79b/0xc68
[0.00] [<4184c0b4>] ? printk+0x1c/0x1e
[0.00] [<41d2b7cf>] start_kernel+0x9c/0x456
[0.00] [<41d2b2ca>] i386_start_kernel+0x79/0x7d
Elapsed time: 5
qemu-system-i386 -enable-kvm -kernel
/kernel/i386-randconfig-hxb2-1008/099669ed953121e1b00248f65326b6b092fa47c8/vmlinuz-3.17.0-next-20141008
-append 'user=lkp
job=/lkp/scheduled/vm-kbuild-yocto-i386-58/rand_boot-1-yocto-minimal-i386.cgz-i386-randconfig-hxb2-1008-099669ed953121e1b00248f65326b6b092fa47c8-0.yaml
ARCH=i386
BOOT_IMAGE=/kernel/i386-randconfig-hxb2-1008/099669ed953121e1b00248f65326b6b092fa47c8/vmlinuz-3.17.0-next-20141008
kconfig=i386-randconfig-hxb2-1008
commit=099669ed953121e1b00248f65326b6b092fa47c8 branch=next/master
root=/dev/ram0 max_uptime=3600
RESULT_ROOT=/result/vm-kbuild-yocto-i386/boot/1/yocto-minimal-i386.cgz/i386-randconfig-hxb2-1008/099669ed953121e1b00248f65326b6b092fa47c8/0
ip=vm-kbuild-yocto-i386-58::dhcp earlyprintk=ttyS0,115200 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 rw
drbd.minor_count=8' -initrd /fs/sdf1/initrd-vm-kbuild-yocto-i386-58 -m 320
-smp 2 -net nic,vlan=1,model=e1000 -net user,vlan=1 -boot order=nc -no-reboot
-watchdog i6300esb -rtc base=localtime -drive
file=/fs/sdf1/disk0-vm-kbuild-yocto-i386-58,media=disk,if=virtio -drive
file=/fs/sdf1/disk1-vm-kbuild-yocto-i386-58,media=disk,if=virtio -drive
file=/fs/sdf1/disk2-vm-kbuild-yocto-i386-58,media=disk,if=virtio -drive
file=/fs/sdf1/disk3-vm-kbuild-yocto-i386-58,media=disk,if=virtio -drive
file=/fs/sdf1/disk4-vm-kbuild-yocto-i386-58,media=disk,if=virtio -drive
file=/fs/sdf1/disk5-vm-kbuild-yocto-i386-58,media=disk,if=virtio -pidfile
/dev/shm/kboot/pid-vm-kbuild-yocto-i386-58 -serial
file:/dev/shm/kboot/serial-vm-kbuild-yocto-i386-58 -daemonize -display none
-monitor null
Thanks,
Fengguang
Linux version 3.17.0-next-20141008 #815
Command line: user=lkp
[mm] BUG: Int 6: CR2 (null)
Hi Marek, FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit 478e86d7c8c5f41e29abb81b05b459d24bdc71a2 (mm: cma: adjust address limit to avoid hitting low/high memory boundary) +--+++ | | 81febe58a8 | 478e86d7c8 | +--+++ | boot_successes | 10 | 0 | | boot_failures| 5 | 10 | | kernel_BUG_at_arch/x86/mm/physaddr.c | 5 || | invalid_opcode | 5 || | EIP_is_at__phys_addr | 5 || | Kernel_panic-not_syncing:Fatal_exception | 5 || | backtrace:vm_mmap_pgoff | 5 || | backtrace:SyS_mmap_pgoff | 5 || | BUG:Int_CR2(null)| 0 | 10 | +--+++ [0.00] BRK [0x025ee000, 0x025eefff] PGTABLE [0.00] cma: dma_contiguous_reserve(limit 13ffe000) [0.00] cma: dma_contiguous_reserve: reserving 31 MiB for global area [0.00] BUG: Int 6: CR2 (null) [0.00] EDI c000 ESI (null) EBP 41c11ea4 EBX 425cc101 [0.00] ESP 41c11e98 ES 007b DS 007b [0.00] EDX 0001 ECX (null) EAX 41cd8150 [0.00] vec 0006 err (null) EIP 41072227 CS 0060 flg 00210002 [0.00] Stack: 425cc150 (null) (null) 41c11ef4 41d4ee4d (null) 13ffe000 41c11ec4 [0.00]41c2d900 (null) 13ffe000 (null) 4185793e 002e 410c2982 41c11f00 [0.00]410c2df5 (null) (null) (null) 425cc150 00013efe (null) 41c11f28 [0.00] CPU: 0 PID: 0 Comm: swapper Not tainted 3.17.0-next-20141008 #815 [0.00] 425cc101 41c11e48 41850786 41c11ea4 41d2b1db 41d95f71 0006 [0.00] c000 41c11ea4 425cc101 41c11e98 007b 007b [0.00] 0001 41cd8150 0006 41072227 0060 00210002 [0.00] Call Trace: [0.00] [41850786] dump_stack+0x16/0x18 [0.00] [41d2b1db] early_idt_handler+0x6b/0x6b [0.00] [41072227] ? __phys_addr+0x2e/0xca [0.00] [41d4ee4d] cma_declare_contiguous+0x3c/0x2d7 [0.00] [4185793e] ? _raw_spin_unlock_irqrestore+0x59/0x91 [0.00] [410c2982] ? wake_up_klogd+0x8/0x33 [0.00] [410c2df5] ? console_unlock+0x448/0x461 [0.00] [41d6d359] dma_contiguous_reserve_area+0x27/0x47 [0.00] [41d6d4d1] dma_contiguous_reserve+0x158/0x163 [0.00] [41d33e0f] setup_arch+0x79b/0xc68 [0.00] [4184c0b4] ? printk+0x1c/0x1e [0.00] [41d2b7cf] start_kernel+0x9c/0x456 [0.00] [41d2b2ca] i386_start_kernel+0x79/0x7d Elapsed time: 5 qemu-system-i386 -enable-kvm -kernel /kernel/i386-randconfig-hxb2-1008/099669ed953121e1b00248f65326b6b092fa47c8/vmlinuz-3.17.0-next-20141008 -append 'user=lkp job=/lkp/scheduled/vm-kbuild-yocto-i386-58/rand_boot-1-yocto-minimal-i386.cgz-i386-randconfig-hxb2-1008-099669ed953121e1b00248f65326b6b092fa47c8-0.yaml ARCH=i386 BOOT_IMAGE=/kernel/i386-randconfig-hxb2-1008/099669ed953121e1b00248f65326b6b092fa47c8/vmlinuz-3.17.0-next-20141008 kconfig=i386-randconfig-hxb2-1008 commit=099669ed953121e1b00248f65326b6b092fa47c8 branch=next/master root=/dev/ram0 max_uptime=3600 RESULT_ROOT=/result/vm-kbuild-yocto-i386/boot/1/yocto-minimal-i386.cgz/i386-randconfig-hxb2-1008/099669ed953121e1b00248f65326b6b092fa47c8/0 ip=vm-kbuild-yocto-i386-58::dhcp earlyprintk=ttyS0,115200 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 rw drbd.minor_count=8' -initrd /fs/sdf1/initrd-vm-kbuild-yocto-i386-58 -m 320 -smp 2 -net nic,vlan=1,model=e1000 -net user,vlan=1 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -drive file=/fs/sdf1/disk0-vm-kbuild-yocto-i386-58,media=disk,if=virtio -drive file=/fs/sdf1/disk1-vm-kbuild-yocto-i386-58,media=disk,if=virtio -drive file=/fs/sdf1/disk2-vm-kbuild-yocto-i386-58,media=disk,if=virtio -drive file=/fs/sdf1/disk3-vm-kbuild-yocto-i386-58,media=disk,if=virtio -drive file=/fs/sdf1/disk4-vm-kbuild-yocto-i386-58,media=disk,if=virtio -drive file=/fs/sdf1/disk5-vm-kbuild-yocto-i386-58,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-kbuild-yocto-i386-58 -serial file:/dev/shm/kboot/serial-vm-kbuild-yocto-i386-58 -daemonize -display none -monitor null Thanks, Fengguang Linux version 3.17.0-next-20141008 #815 Command line: user=lkp
