From: xuwei5@hisilicon.com (Wei Xu)
To: linux-arm-kernel@lists.infradead.org
Subject: KVM guest sometimes failed to boot because of kernel stack overflow if KPTI is enabled on a hisilicon ARM64 platform.
Date: Thu, 21 Jun 2018 00:25:05 +0800 [thread overview]
Message-ID: <5B2A7FE1.5040607@hisilicon.com> (raw)
In-Reply-To: <ebfabb8f-dcd9-3fb4-3655-368a882d8f09@arm.com>
Hi James,
On 2018/6/20 23:54, James Morse wrote:
> Hi Wei,
>
> On 20/06/18 16:52, Wei Xu wrote:
>> On 2018/6/20 22:42, Will Deacon wrote:
>>> Hmm, I wonder if this is at all related to RAS, since we've just enabled
>>> that and if we take a fault whilst rewriting swapper then we're going to
>>> get stuck. What happens if you set CONFIG_ARM64_RAS_EXTN=n in the guest?
>> I will try it now.
> It's not just the Kconfig symbol, could you also revert:
>
> f751daa4f9d3 ("arm64: Unconditionally enable IESB on exception entry/return for
> firmware-first")
>
>
> (reverts and build cleanly on 4.17)
Thanks to point out this!
I have disabled CONFIG_ARM64_RAS_EXTN and reverted that commit.
But I still got the stack overflow issue sometimes.
Do you have more hint?
Thanks!
The log is as below:
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x480fd010]
[ 0.000000] Linux version 4.17.0-45865-g2b31fe7-dirty
(joyx at Turing-Arch-b) (gcc version 4.9.1 20140505 (prerelease)
(crosstool-NG linaro-1.13.1-4.9-2014.05 - Linaro GCC 4.9-2014.05)) #10
SMP PREEMPT Wed Jun 20 23:59:05 CST 2018
[ 0.000000] Machine model: linux,dummy-virt
[ 0.000000] earlycon: pl11 at MMIO 0x0000000009000000 (options '')
[ 0.000000] bootconsole [pl11] enabled
[ 0.000000] efi: Getting EFI parameters from FDT:
[ 0.000000] efi: UEFI not found.
[ 0.000000] cma: Reserved 16 MiB at 0x000000007f000000
[ 0.000000] NUMA: No NUMA configuration found
[ 0.000000] NUMA: Faking a node at [mem
0x0000000000000000-0x000000007fffffff]
[ 0.000000] NUMA: NODE_DATA [mem 0x7efeb300-0x7efecdff]
[ 0.000000] Zone ranges:
[ 0.000000] DMA32 [mem 0x0000000040000000-0x000000007fffffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000040000000-0x000000007fffffff]
[ 0.000000] Initmem setup node 0 [mem
0x0000000040000000-0x000000007fffffff]
[ 0.000000] psci: probing for conduit method from DT.
[ 0.000000] psci: PSCIv1.0 detected in firmware.
[ 0.000000] psci: Using standard PSCI v0.2 function IDs
[ 0.000000] psci: Trusted OS migration not required
[ 0.000000] psci: SMC Calling Convention v1.1
[ 0.000000] random: get_random_bytes called from
start_kernel+0xa8/0x418 with crng_init=0
[ 0.000000] percpu: Embedded 24 pages/cpu @ (ptrval)
s57984 r8192 d32128 u98304
[ 0.000000] Detected VIPT I-cache on CPU0
[ 0.000000] CPU features: detected: Kernel page table isolation
(KPTI)
[ 0.000000] CPU features: detected: Hardware dirty bit management
[ 0.000000] Built 1 zonelists, mobility grouping on. Total
pages: 258048
[ 0.000000] Policy zone: DMA32
[ 0.000000] Kernel command line: rdinit=init console=ttyAMA0
earlycon=pl011,0x9000000
[ 0.000000] Memory: 968436K/1048576K available (10044K kernel
code, 1328K rwdata, 4840K rodata, 1216K init, 409K bss, 63756K reserved,
16384K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1,
Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] RCU restricting CPUs from NR_CPUS=128 to
nr_cpu_ids=1.
[ 0.000000] Tasks RCU enabled.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16,
nr_cpu_ids=1
[ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[ 0.000000] GICv3: Distributor has no Range Selector support
[ 0.000000] GICv3: no VLPI support, no direct LPI support
[ 0.000000] ITS [mem 0x08080000-0x0809ffff]
[ 0.000000] ITS at 0x0000000008080000: allocated 8192 Devices
@7d830000 (indirect, esz 8, psz 64K, shr 1)
[ 0.000000] ITS at 0x0000000008080000: allocated 8192 Interrupt
Collections @7d840000 (flat, esz 8, psz 64K, shr 1)
[ 0.000000] GIC: using LPI property table @0x000000007d850000
[ 0.000000] ITS: Allocated 1792 chunks for LPIs
[ 0.000000] GICv3: CPU0: found redistributor 0 region
0:0x00000000080a0000
[ 0.000000] CPU0: using LPI pending table @0x000000007d860000
[ 0.000000] GIC: PPI11 is secure or misconfigured
[ 0.000000] arch_timer: WARNING: Invalid trigger for IRQ3,
assuming level low
[ 0.000000] arch_timer: WARNING: Please fix your firmware
[ 0.000000] arch_timer: cp15 timer(s) running at 100.00MHz (virt).
[ 0.000000] clocksource: arch_sys_counter: mask:
0xffffffffffffff max_cycles: 0x171024e7e0, max_idle_ns: 440795205315 ns
[ 0.000001] sched_clock: 56 bits at 100MHz, resolution 10ns,
wraps every 4398046511100ns
[ 0.000843] Console: colour dummy device 80x25
[ 0.001401] Calibrating delay loop (skipped), value calculated
using timer frequency.. 200.00 BogoMIPS (lpj=400000)
[ 0.002453] pid_max: default: 32768 minimum: 301
[ 0.002941] Security Framework initialized
[ 0.003517] Dentry cache hash table entries: 131072 (order: 8,
1048576 bytes)
[ 0.004317] Inode-cache hash table entries: 65536 (order: 7,
524288 bytes)
[ 0.005018] Mount-cache hash table entries: 2048 (order: 2,
16384 bytes)
[ 0.005791] Mountpoint-cache hash table entries: 2048 (order: 2,
16384 bytes)
[ 0.025893] ASID allocator initialised with 32768 entries
[ 0.029901] Hierarchical SRCU implementation.
[ 0.034274] Platform MSI: its domain created
[ 0.034749] PCI/MSI: /intc/its domain created
[ 0.035317] EFI services will not be available.
[ 0.037930] smp: Bringing up secondary CPUs ...
[ 0.038396] smp: Brought up 1 node, 1 CPU
[ 0.038810] SMP: Total of 1 processors activated.
[ 0.039285] CPU features: detected: GIC system register CPU
interface
[ 0.039930] CPU features: detected: Privileged Access Never
[ 0.040488] CPU features: detected: User Access Override
[ 0.042421] Insufficient stack space to handle exception!
[ 0.042423] ESR: 0x96000046 -- DABT (current EL)
[ 0.043730] FAR: 0xffff0000093a80e0
[ 0.044714] Task stack: [0xffff0000093a8000..0xffff0000093ac000]
[ 0.051113] IRQ stack: [0xffff000008000000..0xffff000008004000]
[ 0.057610] Overflow stack: [0xffff80003efce2f0..0xffff80003efcf2f0]
[ 0.064003] CPU: 0 PID: 12 Comm: migration/0 Not tainted
4.17.0-45865-g2b31fe7-dirty #10
[ 0.072201] Hardware name: linux,dummy-virt (DT)
[ 0.076797] pstate: 604003c5 (nZCv DAIF +PAN -UAO)
[ 0.081727] pc : el1_sync+0x0/0xb0
[ 0.085217] lr : kpti_install_ng_mappings+0x120/0x214
[ 0.090284] sp : ffff0000093a80e0
[ 0.093654] x29: ffff0000093abce0 x28: ffff000008ea9000
[ 0.099071] x27: ffff000008ea9000 x26: ffff0000091f7000
[ 0.104488] x25: ffff00000906d000 x24: ffff000009191000
[ 0.109798] x23: ffff000008ea9000 x22: 0000000041190000
[ 0.115217] x21: ffff0000091f7000 x20: 0000000000000000
[ 0.120633] x19: ffff000009190000 x18: 000000003455d99d
[ 0.125943] x17: 0000000000000001 x16: 00f8000040ffff13
[ 0.131358] x15: 000000007eff6000 x14: 000000007eff6000
[ 0.136773] x13: 00f800007fe00f11 x12: 000000007eff8000
[ 0.142082] x11: 000000007eff8000 x10: 0000000000000000
[ 0.147501] x9 : 000000007eff9000 x8 : 000000007eff9000
[ 0.152920] x7 : 0000000000000000 x6 : 00000000411f8000
[ 0.158230] x5 : 00000000411f8000 x4 : 0000000040a443d4
[ 0.163646] x3 : 00000000411f7000 x2 : 00000000411f7000
[ 0.169061] x1 : ffff00000906d7b0 x0 : ffff80003da61c00
[ 0.174372] Kernel panic - not syncing: kernel stack overflow
[ 0.180264] CPU: 0 PID: 12 Comm: migration/0 Not tainted
4.17.0-45865-g2b31fe7-dirty #10
[ 0.188348] Hardware name: linux,dummy-virt (DT)
[ 0.193046] Call trace:
[ 0.195572] dump_backtrace+0x0/0x180
[ 0.199304] show_stack+0x14/0x1c
[ 0.202677] dump_stack+0x90/0xb0
[ 0.206152] panic+0x138/0x2a0
[ 0.209182] __stack_chk_fail+0x0/0x18
[ 0.213029] handle_bad_stack+0x118/0x124
[ 0.217120] __bad_stack+0x88/0x8c
[ 0.220607] el1_sync+0x0/0xb0
[ 0.223738] Unable to handle kernel paging request at virtual
address ffff0000093abce0
[ 0.231704] Mem abort info:
[ 0.234586] ESR = 0x96000006
[ 0.237714] Exception class = DABT (current EL), IL = 32 bits
[ 0.243628] SET = 0, FnV = 0
[ 0.246758] EA = 0, S1PTW = 0
[ 0.250001] Data abort info:
[ 0.253000] ISV = 0, ISS = 0x00000006
[ 0.256859] CM = 0, WnR = 0
[ 0.259871] swapper pgtable: 4k pages, 48-bit VAs, pgdp
= (ptrval)
[ 0.266862] [ffff0000093abce0] pgd=00000000411f8803,
pud=00000000411f9803, pmd=0000000000000000
[ 0.275659] Internal error: Oops: 96000006 [#1] PREEMPT SMP
[ 0.281213] Modules linked in:
[ 0.284447] CPU: 0 PID: 12 Comm: migration/0 Not tainted
4.17.0-45865-g2b31fe7-dirty #10
[ 0.292534] Hardware name: linux,dummy-virt (DT)
[ 0.297229] pstate: 204003c5 (nzCv DAIF +PAN -UAO)
[ 0.302053] pc : unwind_frame+0x28/0xc8
[ 0.306022] lr : dump_backtrace+0x12c/0x180
[ 0.310245] sp : ffff80003efcf000
[ 0.313616] x29: ffff80003efcf000 x28: ffff80003da61c00
[ 0.319033] x27: ffff000008ea9000 x26: ffff0000091f7000
[ 0.324348] x25: ffff00000906d000 x24: ffff0000093a80e0
[ 0.329764] x23: 0000000000000000 x22: ffff000008dbae28
[ 0.335179] x21: 0000000000000000 x20: ffff000009049000
[ 0.340488] x19: ffff80003da61c00 x18: 000000003455d99d
[ 0.345906] x17: 0000000000000001 x16: 00f8000040ffff13
[ 0.351322] x15: 000000007eff6000 x14: 3031232079747269
[ 0.356633] x13: 0000000000000000 x12: cc26f77952f87e00
[ 0.362046] x11: ffffffffffffffff x10: 0000000000000076
[ 0.367466] x9 : ffff0000085aea28 x8 : ffff80003efcec90
[ 0.372880] x7 : 0000000000000000 x6 : ffff0000091befe1
[ 0.378190] x5 : 0000000000000000 x4 : ffff0000093ac000
[ 0.383605] x3 : ffff0000093a8000 x2 : ffff0000093abce0
[ 0.389021] x1 : ffff80003efcf048 x0 : ffff80003da61c00
[ 0.394330] Process migration/0 (pid: 12, stack limit =
0x (ptrval))
[ 0.401427] Call trace:
[ 0.403852] unwind_frame+0x28/0xc8
[ 0.407455] show_stack+0x14/0x1c
[ 0.410828] dump_stack+0x90/0xb0
[ 0.414201] panic+0x138/0x2a0
[ 0.417329] __stack_chk_fail+0x0/0x18
[ 0.421177] handle_bad_stack+0x118/0x124
[ 0.425273] __bad_stack+0x88/0x8c
[ 0.428762] el1_sync+0x0/0xb0
[ 0.431891] Unable to handle kernel paging request at virtual
address ffff0000093abce0
[ 0.439851] Mem abort info:
[ 0.442734] ESR = 0x96000006
[ 0.445861] Exception class = DABT (current EL), IL = 32 bits
[ 0.451774] SET = 0, FnV = 0
[ 0.454900] EA = 0, S1PTW = 0
[ 0.458142] Data abort info:
[ 0.461144] ISV = 0, ISS = 0x00000006
[ 0.465001] CM = 0, WnR = 0
[ 0.468013] swapper pgtable: 4k pages, 48-bit VAs, pgdp
= (ptrval)
[ 0.474996] [ffff0000093abce0] pgd=00000000411f8803,
pud=00000000411f9803, pmd=0000000000000000
Best Regards,
Wei
>
> Thanks,
>
> James
>
> .
>
WARNING: multiple messages have this Message-ID (diff)
From: Wei Xu <xuwei5@hisilicon.com>
To: James Morse <james.morse@arm.com>
Cc: Will Deacon <will.deacon@arm.com>, <catalin.marinas@arm.com>,
<suzuki.poulose@arm.com>, <dave.martin@arm.com>,
<mark.rutland@arm.com>, <marc.zyngier@arm.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, Linuxarm <linuxarm@huawei.com>,
Hanjun Guo <guohanjun@huawei.com>, <xiexiuqi@huawei.com>,
huangdaode <huangdaode@hisilicon.com>,
"Chenxin (Charles)" <charles.chenxin@huawei.com>,
"Xiongfanggou (James)" <james.xiong@huawei.com>,
"Liguozhu (Kenneth)" <liguozhu@hisilicon.com>,
Zhangyi ac <zhangyi.ac@huawei.com>, <jonathan.cameron@huawei.com>,
Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>,
John Garry <john.garry@huawei.com>,
Salil Mehta <salil.mehta@huawei.com>,
Shiju Jose <shiju.jose@huawei.com>,
"Zhuangyuzeng (Yisen)" <yisen.zhuang@huawei.com>,
"Wangzhou (B)" <wangzhou1@hisilicon.com>,
"kongxinwei (A)" <kong.kongxinwei@hisilicon.com>,
"Liyuan (Larry, Turing Solution)" <Larry.T@huawei.com>,
<libeijian@hisilicon.com>
Subject: Re: KVM guest sometimes failed to boot because of kernel stack overflow if KPTI is enabled on a hisilicon ARM64 platform.
Date: Thu, 21 Jun 2018 00:25:05 +0800 [thread overview]
Message-ID: <5B2A7FE1.5040607@hisilicon.com> (raw)
In-Reply-To: <ebfabb8f-dcd9-3fb4-3655-368a882d8f09@arm.com>
Hi James,
On 2018/6/20 23:54, James Morse wrote:
> Hi Wei,
>
> On 20/06/18 16:52, Wei Xu wrote:
>> On 2018/6/20 22:42, Will Deacon wrote:
>>> Hmm, I wonder if this is at all related to RAS, since we've just enabled
>>> that and if we take a fault whilst rewriting swapper then we're going to
>>> get stuck. What happens if you set CONFIG_ARM64_RAS_EXTN=n in the guest?
>> I will try it now.
> It's not just the Kconfig symbol, could you also revert:
>
> f751daa4f9d3 ("arm64: Unconditionally enable IESB on exception entry/return for
> firmware-first")
>
>
> (reverts and build cleanly on 4.17)
Thanks to point out this!
I have disabled CONFIG_ARM64_RAS_EXTN and reverted that commit.
But I still got the stack overflow issue sometimes.
Do you have more hint?
Thanks!
The log is as below:
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x480fd010]
[ 0.000000] Linux version 4.17.0-45865-g2b31fe7-dirty
(joyx@Turing-Arch-b) (gcc version 4.9.1 20140505 (prerelease)
(crosstool-NG linaro-1.13.1-4.9-2014.05 - Linaro GCC 4.9-2014.05)) #10
SMP PREEMPT Wed Jun 20 23:59:05 CST 2018
[ 0.000000] Machine model: linux,dummy-virt
[ 0.000000] earlycon: pl11 at MMIO 0x0000000009000000 (options '')
[ 0.000000] bootconsole [pl11] enabled
[ 0.000000] efi: Getting EFI parameters from FDT:
[ 0.000000] efi: UEFI not found.
[ 0.000000] cma: Reserved 16 MiB at 0x000000007f000000
[ 0.000000] NUMA: No NUMA configuration found
[ 0.000000] NUMA: Faking a node at [mem
0x0000000000000000-0x000000007fffffff]
[ 0.000000] NUMA: NODE_DATA [mem 0x7efeb300-0x7efecdff]
[ 0.000000] Zone ranges:
[ 0.000000] DMA32 [mem 0x0000000040000000-0x000000007fffffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000040000000-0x000000007fffffff]
[ 0.000000] Initmem setup node 0 [mem
0x0000000040000000-0x000000007fffffff]
[ 0.000000] psci: probing for conduit method from DT.
[ 0.000000] psci: PSCIv1.0 detected in firmware.
[ 0.000000] psci: Using standard PSCI v0.2 function IDs
[ 0.000000] psci: Trusted OS migration not required
[ 0.000000] psci: SMC Calling Convention v1.1
[ 0.000000] random: get_random_bytes called from
start_kernel+0xa8/0x418 with crng_init=0
[ 0.000000] percpu: Embedded 24 pages/cpu @ (ptrval)
s57984 r8192 d32128 u98304
[ 0.000000] Detected VIPT I-cache on CPU0
[ 0.000000] CPU features: detected: Kernel page table isolation
(KPTI)
[ 0.000000] CPU features: detected: Hardware dirty bit management
[ 0.000000] Built 1 zonelists, mobility grouping on. Total
pages: 258048
[ 0.000000] Policy zone: DMA32
[ 0.000000] Kernel command line: rdinit=init console=ttyAMA0
earlycon=pl011,0x9000000
[ 0.000000] Memory: 968436K/1048576K available (10044K kernel
code, 1328K rwdata, 4840K rodata, 1216K init, 409K bss, 63756K reserved,
16384K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1,
Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] RCU restricting CPUs from NR_CPUS=128 to
nr_cpu_ids=1.
[ 0.000000] Tasks RCU enabled.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16,
nr_cpu_ids=1
[ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[ 0.000000] GICv3: Distributor has no Range Selector support
[ 0.000000] GICv3: no VLPI support, no direct LPI support
[ 0.000000] ITS [mem 0x08080000-0x0809ffff]
[ 0.000000] ITS@0x0000000008080000: allocated 8192 Devices
@7d830000 (indirect, esz 8, psz 64K, shr 1)
[ 0.000000] ITS@0x0000000008080000: allocated 8192 Interrupt
Collections @7d840000 (flat, esz 8, psz 64K, shr 1)
[ 0.000000] GIC: using LPI property table @0x000000007d850000
[ 0.000000] ITS: Allocated 1792 chunks for LPIs
[ 0.000000] GICv3: CPU0: found redistributor 0 region
0:0x00000000080a0000
[ 0.000000] CPU0: using LPI pending table @0x000000007d860000
[ 0.000000] GIC: PPI11 is secure or misconfigured
[ 0.000000] arch_timer: WARNING: Invalid trigger for IRQ3,
assuming level low
[ 0.000000] arch_timer: WARNING: Please fix your firmware
[ 0.000000] arch_timer: cp15 timer(s) running at 100.00MHz (virt).
[ 0.000000] clocksource: arch_sys_counter: mask:
0xffffffffffffff max_cycles: 0x171024e7e0, max_idle_ns: 440795205315 ns
[ 0.000001] sched_clock: 56 bits at 100MHz, resolution 10ns,
wraps every 4398046511100ns
[ 0.000843] Console: colour dummy device 80x25
[ 0.001401] Calibrating delay loop (skipped), value calculated
using timer frequency.. 200.00 BogoMIPS (lpj=400000)
[ 0.002453] pid_max: default: 32768 minimum: 301
[ 0.002941] Security Framework initialized
[ 0.003517] Dentry cache hash table entries: 131072 (order: 8,
1048576 bytes)
[ 0.004317] Inode-cache hash table entries: 65536 (order: 7,
524288 bytes)
[ 0.005018] Mount-cache hash table entries: 2048 (order: 2,
16384 bytes)
[ 0.005791] Mountpoint-cache hash table entries: 2048 (order: 2,
16384 bytes)
[ 0.025893] ASID allocator initialised with 32768 entries
[ 0.029901] Hierarchical SRCU implementation.
[ 0.034274] Platform MSI: its domain created
[ 0.034749] PCI/MSI: /intc/its domain created
[ 0.035317] EFI services will not be available.
[ 0.037930] smp: Bringing up secondary CPUs ...
[ 0.038396] smp: Brought up 1 node, 1 CPU
[ 0.038810] SMP: Total of 1 processors activated.
[ 0.039285] CPU features: detected: GIC system register CPU
interface
[ 0.039930] CPU features: detected: Privileged Access Never
[ 0.040488] CPU features: detected: User Access Override
[ 0.042421] Insufficient stack space to handle exception!
[ 0.042423] ESR: 0x96000046 -- DABT (current EL)
[ 0.043730] FAR: 0xffff0000093a80e0
[ 0.044714] Task stack: [0xffff0000093a8000..0xffff0000093ac000]
[ 0.051113] IRQ stack: [0xffff000008000000..0xffff000008004000]
[ 0.057610] Overflow stack: [0xffff80003efce2f0..0xffff80003efcf2f0]
[ 0.064003] CPU: 0 PID: 12 Comm: migration/0 Not tainted
4.17.0-45865-g2b31fe7-dirty #10
[ 0.072201] Hardware name: linux,dummy-virt (DT)
[ 0.076797] pstate: 604003c5 (nZCv DAIF +PAN -UAO)
[ 0.081727] pc : el1_sync+0x0/0xb0
[ 0.085217] lr : kpti_install_ng_mappings+0x120/0x214
[ 0.090284] sp : ffff0000093a80e0
[ 0.093654] x29: ffff0000093abce0 x28: ffff000008ea9000
[ 0.099071] x27: ffff000008ea9000 x26: ffff0000091f7000
[ 0.104488] x25: ffff00000906d000 x24: ffff000009191000
[ 0.109798] x23: ffff000008ea9000 x22: 0000000041190000
[ 0.115217] x21: ffff0000091f7000 x20: 0000000000000000
[ 0.120633] x19: ffff000009190000 x18: 000000003455d99d
[ 0.125943] x17: 0000000000000001 x16: 00f8000040ffff13
[ 0.131358] x15: 000000007eff6000 x14: 000000007eff6000
[ 0.136773] x13: 00f800007fe00f11 x12: 000000007eff8000
[ 0.142082] x11: 000000007eff8000 x10: 0000000000000000
[ 0.147501] x9 : 000000007eff9000 x8 : 000000007eff9000
[ 0.152920] x7 : 0000000000000000 x6 : 00000000411f8000
[ 0.158230] x5 : 00000000411f8000 x4 : 0000000040a443d4
[ 0.163646] x3 : 00000000411f7000 x2 : 00000000411f7000
[ 0.169061] x1 : ffff00000906d7b0 x0 : ffff80003da61c00
[ 0.174372] Kernel panic - not syncing: kernel stack overflow
[ 0.180264] CPU: 0 PID: 12 Comm: migration/0 Not tainted
4.17.0-45865-g2b31fe7-dirty #10
[ 0.188348] Hardware name: linux,dummy-virt (DT)
[ 0.193046] Call trace:
[ 0.195572] dump_backtrace+0x0/0x180
[ 0.199304] show_stack+0x14/0x1c
[ 0.202677] dump_stack+0x90/0xb0
[ 0.206152] panic+0x138/0x2a0
[ 0.209182] __stack_chk_fail+0x0/0x18
[ 0.213029] handle_bad_stack+0x118/0x124
[ 0.217120] __bad_stack+0x88/0x8c
[ 0.220607] el1_sync+0x0/0xb0
[ 0.223738] Unable to handle kernel paging request at virtual
address ffff0000093abce0
[ 0.231704] Mem abort info:
[ 0.234586] ESR = 0x96000006
[ 0.237714] Exception class = DABT (current EL), IL = 32 bits
[ 0.243628] SET = 0, FnV = 0
[ 0.246758] EA = 0, S1PTW = 0
[ 0.250001] Data abort info:
[ 0.253000] ISV = 0, ISS = 0x00000006
[ 0.256859] CM = 0, WnR = 0
[ 0.259871] swapper pgtable: 4k pages, 48-bit VAs, pgdp
= (ptrval)
[ 0.266862] [ffff0000093abce0] pgd=00000000411f8803,
pud=00000000411f9803, pmd=0000000000000000
[ 0.275659] Internal error: Oops: 96000006 [#1] PREEMPT SMP
[ 0.281213] Modules linked in:
[ 0.284447] CPU: 0 PID: 12 Comm: migration/0 Not tainted
4.17.0-45865-g2b31fe7-dirty #10
[ 0.292534] Hardware name: linux,dummy-virt (DT)
[ 0.297229] pstate: 204003c5 (nzCv DAIF +PAN -UAO)
[ 0.302053] pc : unwind_frame+0x28/0xc8
[ 0.306022] lr : dump_backtrace+0x12c/0x180
[ 0.310245] sp : ffff80003efcf000
[ 0.313616] x29: ffff80003efcf000 x28: ffff80003da61c00
[ 0.319033] x27: ffff000008ea9000 x26: ffff0000091f7000
[ 0.324348] x25: ffff00000906d000 x24: ffff0000093a80e0
[ 0.329764] x23: 0000000000000000 x22: ffff000008dbae28
[ 0.335179] x21: 0000000000000000 x20: ffff000009049000
[ 0.340488] x19: ffff80003da61c00 x18: 000000003455d99d
[ 0.345906] x17: 0000000000000001 x16: 00f8000040ffff13
[ 0.351322] x15: 000000007eff6000 x14: 3031232079747269
[ 0.356633] x13: 0000000000000000 x12: cc26f77952f87e00
[ 0.362046] x11: ffffffffffffffff x10: 0000000000000076
[ 0.367466] x9 : ffff0000085aea28 x8 : ffff80003efcec90
[ 0.372880] x7 : 0000000000000000 x6 : ffff0000091befe1
[ 0.378190] x5 : 0000000000000000 x4 : ffff0000093ac000
[ 0.383605] x3 : ffff0000093a8000 x2 : ffff0000093abce0
[ 0.389021] x1 : ffff80003efcf048 x0 : ffff80003da61c00
[ 0.394330] Process migration/0 (pid: 12, stack limit =
0x (ptrval))
[ 0.401427] Call trace:
[ 0.403852] unwind_frame+0x28/0xc8
[ 0.407455] show_stack+0x14/0x1c
[ 0.410828] dump_stack+0x90/0xb0
[ 0.414201] panic+0x138/0x2a0
[ 0.417329] __stack_chk_fail+0x0/0x18
[ 0.421177] handle_bad_stack+0x118/0x124
[ 0.425273] __bad_stack+0x88/0x8c
[ 0.428762] el1_sync+0x0/0xb0
[ 0.431891] Unable to handle kernel paging request at virtual
address ffff0000093abce0
[ 0.439851] Mem abort info:
[ 0.442734] ESR = 0x96000006
[ 0.445861] Exception class = DABT (current EL), IL = 32 bits
[ 0.451774] SET = 0, FnV = 0
[ 0.454900] EA = 0, S1PTW = 0
[ 0.458142] Data abort info:
[ 0.461144] ISV = 0, ISS = 0x00000006
[ 0.465001] CM = 0, WnR = 0
[ 0.468013] swapper pgtable: 4k pages, 48-bit VAs, pgdp
= (ptrval)
[ 0.474996] [ffff0000093abce0] pgd=00000000411f8803,
pud=00000000411f9803, pmd=0000000000000000
Best Regards,
Wei
>
> Thanks,
>
> James
>
> .
>
next prev parent reply other threads:[~2018-06-20 16:25 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-20 14:18 KVM guest sometimes failed to boot because of kernel stack overflow if KPTI is enabled on a hisilicon ARM64 platform Wei Xu
2018-06-20 14:18 ` Wei Xu
2018-06-20 14:42 ` Will Deacon
2018-06-20 14:42 ` Will Deacon
2018-06-20 15:52 ` Wei Xu
2018-06-20 15:52 ` Wei Xu
2018-06-20 15:54 ` James Morse
2018-06-20 15:54 ` James Morse
2018-06-20 16:25 ` Wei Xu [this message]
2018-06-20 16:25 ` Wei Xu
2018-06-20 16:28 ` Will Deacon
2018-06-20 16:28 ` Will Deacon
2018-06-20 16:33 ` Wei Xu
2018-06-20 16:33 ` Wei Xu
2018-06-21 8:38 ` James Morse
2018-06-21 8:38 ` James Morse
2018-06-21 9:00 ` Marc Zyngier
2018-06-21 9:00 ` Marc Zyngier
2018-06-21 9:18 ` Will Deacon
2018-06-21 9:18 ` Will Deacon
2018-06-21 10:14 ` Wei Xu
2018-06-21 10:14 ` Wei Xu
2018-06-21 10:54 ` Will Deacon
2018-06-21 10:54 ` Will Deacon
2018-06-22 8:33 ` Wei Xu
2018-06-22 8:33 ` Wei Xu
2018-06-22 9:23 ` Will Deacon
2018-06-22 9:23 ` Will Deacon
2018-06-22 10:45 ` Wei Xu
2018-06-22 10:45 ` Wei Xu
2018-06-22 11:16 ` Will Deacon
2018-06-22 11:16 ` Will Deacon
2018-06-22 13:18 ` Wei Xu
2018-06-22 13:18 ` Wei Xu
2018-06-22 13:31 ` Will Deacon
2018-06-22 13:31 ` Will Deacon
2018-06-22 13:46 ` Wei Xu
2018-06-22 13:46 ` Wei Xu
2018-06-22 14:43 ` Will Deacon
2018-06-22 14:43 ` Will Deacon
2018-06-22 15:26 ` Wei Xu
2018-06-22 15:26 ` Wei Xu
2018-06-22 14:28 ` Mark Rutland
2018-06-22 14:28 ` Mark Rutland
2018-06-22 15:28 ` Wei Xu
2018-06-22 15:28 ` Wei Xu
2018-06-22 15:41 ` Will Deacon
2018-06-22 15:41 ` Will Deacon
2018-06-22 16:02 ` Wei Xu
2018-06-22 16:02 ` Wei Xu
2018-06-21 9:20 ` Wei Xu
2018-06-21 9:20 ` Wei Xu
2018-06-26 17:16 ` Wei Xu
2018-06-26 17:16 ` Wei Xu
2018-06-26 17:47 ` Will Deacon
2018-06-26 17:47 ` Will Deacon
2018-06-27 8:39 ` James Morse
2018-06-27 8:39 ` James Morse
2018-06-27 13:26 ` Wei Xu
2018-06-27 13:26 ` Wei Xu
2018-06-28 8:45 ` James Morse
2018-06-28 8:45 ` James Morse
2018-06-28 10:20 ` Wei Xu
2018-06-28 10:20 ` Wei Xu
2018-06-27 13:22 ` Wei Xu
2018-06-27 13:22 ` Wei Xu
2018-06-27 13:28 ` Will Deacon
2018-06-27 13:28 ` Will Deacon
2018-06-27 13:32 ` Wei Xu
2018-06-27 13:32 ` Wei Xu
2018-06-28 14:50 ` Wei Xu
2018-06-28 14:50 ` Wei Xu
2018-06-28 15:34 ` Mark Rutland
2018-06-28 15:34 ` Mark Rutland
[not found] ` <etPan.5b3507f7.914aa16.1d6b@localhost>
2018-06-28 16:24 ` 答复: " Mark Rutland
2018-06-28 16:24 ` Mark Rutland
2018-06-29 9:59 ` Mark Rutland
2018-06-29 9:59 ` Mark Rutland
2018-06-29 8:47 ` Marc Zyngier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5B2A7FE1.5040607@hisilicon.com \
--to=xuwei5@hisilicon.com \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.