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Date: Sat, 8 May 2021 00:32:37 +0100
From: Julien Grall <julien@....org>
To: f.fainelli@...il.com, Stefano Stabellini <sstabellini@...nel.org>
Cc: "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
linux-kernel@...r.kernel.org,
osstest service owner <osstest-admin@...project.org>,
hch@....de, Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
Boris Ostrovsky <boris.ostrovsky@...cle.com>,
iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Regression when booting 5.15 as dom0 on arm64 (WAS: Re: [linux-linus
test] 161829: regressions - FAIL)
Hi all,
On 07/05/2021 22:00, osstest service owner wrote:
> flight 161829 linux-linus real [real]
> http://logs.test-lab.xenproject.org/osstest/logs/161829/
>
> Regressions :-(
>
> Tests which did not succeed and are blocking,
> including tests which could not be run:
[...]
> test-arm64-arm64-examine 8 reboot fail REGR. vs. 152332
> test-arm64-arm64-libvirt-xsm 8 xen-boot fail REGR. vs. 152332
> test-arm64-arm64-xl-credit2 8 xen-boot fail REGR. vs. 152332
> test-arm64-arm64-xl-credit1 8 xen-boot fail REGR. vs. 152332
> test-arm64-arm64-xl 8 xen-boot fail REGR. vs. 152332
> test-arm64-arm64-xl-xsm 8 xen-boot fail REGR. vs. 152332
> test-amd64-amd64-amd64-pvgrub 20 guest-stop fail REGR. vs. 152332
> test-amd64-amd64-i386-pvgrub 20 guest-stop fail REGR. vs. 152332
> test-arm64-arm64-xl-thunderx 8 xen-boot fail REGR. vs. 152332
> test-amd64-amd64-xl-qcow2 13 guest-start fail REGR. vs. 152332
> test-amd64-amd64-libvirt-vhd 13 guest-start fail REGR. vs. 152332
> test-amd64-amd64-examine 4 memdisk-try-append fail REGR. vs. 152332
> test-arm64-arm64-xl-seattle 8 xen-boot fail REGR. vs. 152332
> test-armhf-armhf-xl-vhd 13 guest-start fail REGR. vs. 152332
Osstest reported dom0 boot failure on all the arm64 platform we have.
The stack trace is similar everywhere:
[ 18.101077] Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000008
[ 18.101441] Mem abort info:
[ 18.101625] ESR = 0x96000004
[ 18.101839] EC = 0x25: DABT (current EL), IL = 32 bits
[ 18.102111] SET = 0, FnV = 0
[ 18.102327] EA = 0, S1PTW = 0
[ 18.102544] Data abort info:
[ 18.102747] ISV = 0, ISS = 0x00000004
[ 18.102968] CM = 0, WnR = 0
[ 18.103183] [0000000000000008] user address but active_mm is swapper
[ 18.103476] Internal error: Oops: 96000004 [#1] SMP
[ 18.103689] Modules linked in:
[ 18.103881] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.12.0-rc3+ #126
[ 18.104172] Hardware name: Foundation-v8A (DT)
[ 18.104376] pstate: 60000005 (nZCv daif -PAN -UAO -TCO BTYPE=--)
[ 18.104653] pc : xen_swiotlb_dma_supported+0x30/0xc8
[ 18.104893] lr : dma_supported+0x38/0x68
[ 18.105118] sp : ffff80001295bac0
[ 18.105289] x29: ffff80001295bac0 x28: ffff8000114f44c0
[ 18.105600] x27: 0000000000000007 x26: ffff8000113a1000
[ 18.105906] x25: 0000000000000000 x24: ffff800011d2e910
[ 18.106213] x23: ffff800011d4d000 x22: ffff000012fad810
[ 18.106525] x21: ffffffffffffffff x20: ffffffffffffffff
[ 18.106837] x19: ffff000012fad810 x18: 00000000ffffffeb
[ 18.107146] x17: 0000000000000000 x16: 00000000493f1445
[ 18.107450] x15: ffff80001132d000 x14: 000000001c131000
[ 18.107759] x13: 00000000498d0616 x12: ffff8000129f7000
[ 18.108068] x11: ffff000012c08710 x10: ffff800011a91000
[ 18.108380] x9 : 0000000000003000 x8 : ffff00001ffff000
[ 18.108722] x7 : ffff800011a90a88 x6 : ffff800010a7275c
[ 18.109031] x5 : 0000000000000000 x4 : 0000000000000001
[ 18.109331] x3 : 2cd8f9dc91b3df00 x2 : ffff8000109c7578
[ 18.109640] x1 : 0000000000000000 x0 : 0000000000000000
[ 18.109940] Call trace:
[ 18.110079] xen_swiotlb_dma_supported+0x30/0xc8
[ 18.110319] dma_supported+0x38/0x68
[ 18.110543] dma_set_mask+0x30/0x58
[ 18.110765] virtio_mmio_probe+0x1c8/0x238
[ 18.110979] platform_probe+0x6c/0x108
[ 18.111188] really_probe+0xfc/0x3c8
[ 18.111413] driver_probe_device+0x68/0xe8
[ 18.111647] device_driver_attach+0x74/0x98
[ 18.111883] __driver_attach+0x98/0xe0
[ 18.112111] bus_for_each_dev+0x84/0xd8
[ 18.112334] driver_attach+0x30/0x40
[ 18.112557] bus_add_driver+0x168/0x228
[ 18.112784] driver_register+0x64/0x110
[ 18.113016] __platform_driver_register+0x34/0x40
[ 18.113257] virtio_mmio_init+0x20/0x28
[ 18.113480] do_one_initcall+0x90/0x470
[ 18.113694] kernel_init_freeable+0x3ec/0x440
[ 18.113950] kernel_init+0x1c/0x138
[ 18.114158] ret_from_fork+0x10/0x18
[ 18.114409] Code: f000f641 f000a200 f944e821 f9410400 (f9400434)
[ 18.114718] ---[ end trace d39406719f25d228 ]---
[ 18.115044] Kernel panic - not syncing: Attempted to kill init!
exitcode=0x0000000b
[ 18.115339] SMP: stopping secondary CPUs
[ 18.115584] Kernel Offset: disabled
[ 18.115743] CPU features: 0x00240000,61802000
[ 18.115954] Memory Limit: none
[ 18.116173] ---[ end Kernel panic - not syncing: Attempted to kill
init! exitcode=0x0000000b ]---
I have bisected manually and pinpoint the following commit:
commit 2726bf3ff2520dba61fafc90a055640f7ad54e05 (refs/bisect/bad)
Author: Florian Fainelli <f.fainelli@...il.com>
Date: Mon Mar 22 18:53:49 2021 -0700
swiotlb: Make SWIOTLB_NO_FORCE perform no allocation
When SWIOTLB_NO_FORCE is used, there should really be no allocations of
default_nslabs to occur since we are not going to use those slabs. If a
platform was somehow setting swiotlb_no_force and a later call to
swiotlb_init() was to be made we would still be proceeding with
allocating the default SWIOTLB size (64MB), whereas if swiotlb=noforce
was set on the kernel command line we would have only allocated 2KB.
This would be inconsistent and the point of initializing default_nslabs
to 1, was intended to allocate the minimum amount of memory
possible, so
simply remove that minimal allocation period.
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
Reviewed-by: Christoph Hellwig <hch@....de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
The pointer dereferenced seems to suggest that the swiotlb hasn't been
allocated. From what I can tell, this may be because swiotlb_force is
set to SWIOTLB_NO_FORCE, we will still enable the swiotlb when running
on top of Xen.
I am not entirely sure what would be the correct fix. Any opinions?
Cheers,
>
> Regressions which are regarded as allowable (not blocking):
> test-amd64-amd64-xl-rtds 20 guest-localmigrate/x10 fail REGR. vs. 152332
>
> Tests which did not succeed, but are not blocking:
> test-amd64-amd64-xl-qemut-win7-amd64 19 guest-stop fail like 152332
> test-armhf-armhf-libvirt 16 saverestore-support-check fail like 152332
> test-amd64-amd64-xl-qemut-ws16-amd64 19 guest-stop fail like 152332
> test-amd64-amd64-qemuu-nested-amd 20 debian-hvm-install/l1/l2 fail like 152332
> test-amd64-amd64-xl-qemuu-win7-amd64 19 guest-stop fail like 152332
> test-armhf-armhf-libvirt-raw 15 saverestore-support-check fail like 152332
> test-amd64-amd64-xl-qemuu-ws16-amd64 19 guest-stop fail like 152332
> test-amd64-amd64-libvirt-xsm 15 migrate-support-check fail never pass
> test-amd64-amd64-libvirt 15 migrate-support-check fail never pass
> test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm 13 migrate-support-check fail never pass
> test-armhf-armhf-xl-credit2 15 migrate-support-check fail never pass
> test-armhf-armhf-xl-credit2 16 saverestore-support-check fail never pass
> test-armhf-armhf-xl-multivcpu 15 migrate-support-check fail never pass
> test-armhf-armhf-xl-multivcpu 16 saverestore-support-check fail never pass
> test-armhf-armhf-xl 15 migrate-support-check fail never pass
> test-armhf-armhf-xl 16 saverestore-support-check fail never pass
> test-armhf-armhf-xl-cubietruck 15 migrate-support-check fail never pass
> test-armhf-armhf-xl-cubietruck 16 saverestore-support-check fail never pass
> test-armhf-armhf-xl-credit1 15 migrate-support-check fail never pass
> test-armhf-armhf-xl-credit1 16 saverestore-support-check fail never pass
> test-armhf-armhf-libvirt 15 migrate-support-check fail never pass
> test-armhf-armhf-libvirt-raw 14 migrate-support-check fail never pass
> test-armhf-armhf-xl-arndale 15 migrate-support-check fail never pass
> test-armhf-armhf-xl-arndale 16 saverestore-support-check fail never pass
> test-armhf-armhf-xl-rtds 15 migrate-support-check fail never pass
> test-armhf-armhf-xl-rtds 16 saverestore-support-check fail never pass
>
> version targeted for testing:
> linux e48661230cc35b3d0f4367eddfc19f86463ab917
> baseline version:
> linux deacdb3e3979979016fcd0ffd518c320a62ad166
>
> Last test of basis 152332 2020-07-31 19:41:23 Z 280 days
> Failing since 152366 2020-08-01 20:49:34 Z 279 days 465 attempts
> Testing same since 161829 2021-05-07 05:12:46 Z 0 days 1 attempts
>
> ------------------------------------------------------------
> 5992 people touched revisions under test,
> not listing them all
>
> jobs:
> build-amd64-xsm pass
> build-arm64-xsm pass
> build-i386-xsm pass
> build-amd64 pass
> build-arm64 pass
> build-armhf pass
> build-i386 pass
> build-amd64-libvirt pass
> build-arm64-libvirt pass
> build-armhf-libvirt pass
> build-i386-libvirt pass
> build-amd64-pvops pass
> build-arm64-pvops pass
> build-armhf-pvops pass
> build-i386-pvops pass
> test-amd64-amd64-xl pass
> test-amd64-coresched-amd64-xl pass
> test-arm64-arm64-xl fail
> test-armhf-armhf-xl pass
> test-amd64-i386-xl fail
> test-amd64-coresched-i386-xl fail
> test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm pass
> test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm fail
> test-amd64-amd64-xl-qemut-stubdom-debianhvm-amd64-xsm pass
> test-amd64-i386-xl-qemut-stubdom-debianhvm-amd64-xsm fail
> test-amd64-amd64-xl-qemut-debianhvm-i386-xsm pass
> test-amd64-i386-xl-qemut-debianhvm-i386-xsm fail
> test-amd64-amd64-xl-qemuu-debianhvm-i386-xsm pass
> test-amd64-i386-xl-qemuu-debianhvm-i386-xsm fail
> test-amd64-amd64-libvirt-xsm pass
> test-arm64-arm64-libvirt-xsm fail
> test-amd64-i386-libvirt-xsm fail
> test-amd64-amd64-xl-xsm pass
> test-arm64-arm64-xl-xsm fail
> test-amd64-i386-xl-xsm fail
> test-amd64-amd64-qemuu-nested-amd fail
> test-amd64-amd64-xl-pvhv2-amd pass
> test-amd64-i386-qemut-rhel6hvm-amd fail
> test-amd64-i386-qemuu-rhel6hvm-amd fail
> test-amd64-amd64-dom0pvh-xl-amd pass
> test-amd64-amd64-xl-qemut-debianhvm-amd64 pass
> test-amd64-i386-xl-qemut-debianhvm-amd64 fail
> test-amd64-amd64-xl-qemuu-debianhvm-amd64 pass
> test-amd64-i386-xl-qemuu-debianhvm-amd64 fail
> test-amd64-i386-freebsd10-amd64 fail
> test-amd64-amd64-qemuu-freebsd11-amd64 pass
> test-amd64-amd64-qemuu-freebsd12-amd64 pass
> test-amd64-amd64-xl-qemuu-ovmf-amd64 pass
> test-amd64-i386-xl-qemuu-ovmf-amd64 fail
> test-amd64-amd64-xl-qemut-win7-amd64 fail
> test-amd64-i386-xl-qemut-win7-amd64 fail
> test-amd64-amd64-xl-qemuu-win7-amd64 fail
> test-amd64-i386-xl-qemuu-win7-amd64 fail
> test-amd64-amd64-xl-qemut-ws16-amd64 fail
> test-amd64-i386-xl-qemut-ws16-amd64 fail
> test-amd64-amd64-xl-qemuu-ws16-amd64 fail
> test-amd64-i386-xl-qemuu-ws16-amd64 fail
> test-armhf-armhf-xl-arndale pass
> test-amd64-amd64-xl-credit1 pass
> test-arm64-arm64-xl-credit1 fail
> test-armhf-armhf-xl-credit1 pass
> test-amd64-amd64-xl-credit2 pass
> test-arm64-arm64-xl-credit2 fail
> test-armhf-armhf-xl-credit2 pass
> test-armhf-armhf-xl-cubietruck pass
> test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict pass
> test-amd64-i386-xl-qemuu-dmrestrict-amd64-dmrestrict fail
> test-amd64-amd64-examine pass
> test-arm64-arm64-examine fail
> test-armhf-armhf-examine pass
> test-amd64-i386-examine fail
> test-amd64-i386-freebsd10-i386 fail
> test-amd64-amd64-qemuu-nested-intel pass
> test-amd64-amd64-xl-pvhv2-intel pass
> test-amd64-i386-qemut-rhel6hvm-intel fail
> test-amd64-i386-qemuu-rhel6hvm-intel fail
> test-amd64-amd64-dom0pvh-xl-intel pass
> test-amd64-amd64-libvirt pass
> test-armhf-armhf-libvirt pass
> test-amd64-i386-libvirt fail
> test-amd64-amd64-xl-multivcpu pass
> test-armhf-armhf-xl-multivcpu pass
> test-amd64-amd64-pair pass
> test-amd64-i386-pair fail
> test-amd64-amd64-libvirt-pair pass
> test-amd64-i386-libvirt-pair fail
> test-amd64-amd64-amd64-pvgrub fail
> test-amd64-amd64-i386-pvgrub fail
> test-amd64-amd64-xl-pvshim pass
> test-amd64-i386-xl-pvshim fail
> test-amd64-amd64-pygrub pass
> test-amd64-amd64-xl-qcow2 fail
> test-armhf-armhf-libvirt-raw pass
> test-amd64-i386-xl-raw fail
> test-amd64-amd64-xl-rtds fail
> test-armhf-armhf-xl-rtds pass
> test-arm64-arm64-xl-seattle fail
> test-amd64-amd64-xl-qemuu-debianhvm-amd64-shadow pass
> test-amd64-i386-xl-qemuu-debianhvm-amd64-shadow fail
> test-amd64-amd64-xl-shadow pass
> test-amd64-i386-xl-shadow fail
> test-arm64-arm64-xl-thunderx fail
> test-amd64-amd64-libvirt-vhd fail
> test-armhf-armhf-xl-vhd fail
>
>
> ------------------------------------------------------------
> sg-report-flight on osstest.test-lab.xenproject.org
> logs: /home/logs/logs
> images: /home/logs/images
>
> Logs, config files, etc. are available at
> http://logs.test-lab.xenproject.org/osstest/logs
>
> Explanation of these reports, and of osstest in general, is at
> http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README.email;hb=master
> http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README;hb=master
>
> Test harness code can be found at
> http://xenbits.xen.org/gitweb?p=osstest.git;a=summary
>
>
> Not pushing.
>
> (No revision log; it would be 1625261 lines long.)
>
--
Julien Grall
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