Message-ID: <20210615051344.GC4301@dhcp-128-65.nay.redhat.com>
Date:   Tue, 15 Jun 2021 13:13:44 +0800
From:   Dave Young <dyoung@...hat.com>
To:     Bruno Goncalves <bgoncalv@...hat.com>
Cc:     Rasmus Villemoes <linux@...musvillemoes.dk>,
        linux-kernel@...r.kernel.org, CKI Project <cki-project@...hat.com>,
        petitboot@...ts.ozlabs.org, kexec@...ts.infradead.org
Subject: Re: Panic on ppc64le using kernel 5.13.0-rc3

[readd kexec/petiboot list]
On 06/15/21 at 11:20am, Dave Young wrote:
> Hi Bruno,
> 
> [cced kexec and petiboot list]
> On 06/14/21 at 10:03am, Bruno Goncalves wrote:
> > On Mon, Jun 14, 2021 at 7:47 AM Bruno Goncalves <bgoncalv@...hat.com> wrote:
> > >
> > > On Fri, Jun 11, 2021 at 11:49 PM Rasmus Villemoes
> > > <linux@...musvillemoes.dk> wrote:
> > > >
> > > > On 11/06/2021 17.06, Bruno Goncalves wrote:
> > > > > On Fri, Jun 11, 2021 at 9:13 AM Rasmus Villemoes
> > > > > <linux@...musvillemoes.dk> wrote:
> > > > >>
> > > > >> On 10/06/2021 17.14, Bruno Goncalves wrote:
> > > > >>> On Thu, Jun 10, 2021 at 3:02 PM Rasmus Villemoes
> > > > >>> <linux@...musvillemoes.dk> wrote:
> > > > >>>>
> > > > >>>> On 10/06/2021 13.47, Bruno Goncalves wrote:
> > > > >>>>> Hello,
> > > > >>>>>
> > > > >>>>> We've observed in some cases kernel panic when trying to boot on
> > > > >>>>> ppc64le using a kernel based on 5.13.0-rc3. We are not sure if it
> > > > >>>>> could be related to patch
> > > > >>>>> https://lore.kernel.org/lkml/20210313212528.2956377-2-linux@rasmusvillemoes.dk/
> > > > >>>>>
> > > > >>>>
> > > > >>>> Thanks for the report. It's possible, but I'll need some help from you
> > > > >>>> to get more info.
> > > > >>>>
> > > > >>>> First, can you send me the .config?
> > > > >>>
> > > > >>> The .config is on
> > > > >>> https://s3.us-east-1.amazonaws.com/arr-cki-prod-datawarehouse-public/datawarehouse-public/2021/06/09/317881801/build_ppc64le_redhat:1332368174/kernel-block-ppc64le-d3f02e52f5548006f04358d407bbb7fe51255c41.config
> > > > >>
> > > > >> Thanks.
> > > > >>
> > > > >>>>
> > > > >>>>>
> > > > >>>>> [    1.516075] wait_for_initramfs() called before rootfs_initcalls
> > > > >>>>
> > > > >>>> This is likely because you have CONFIG_UEVENT_HELPER_PATH set to some
> > > > >>>> non-empty path (/sbin/hotplug perhaps). This did get reported once before:
> > > > >>>>
> > > > >>>
> > > > >>> CONFIG_UEVENT_HELPER_PATH is not set. In the .config we have "#
> > > > >>> CONFIG_UEVENT_HELPER is not set"
> > > > >>
> > > > >> OK. Then I assume some quite early initcall does a request_module() or
> > > > >> request_firmware() (or similar). I don't think this matters - that call
> > > > >> would be done before the initramfs was unpacked with or without my
> > > > >> patch, so it won't find anything in the empty rootfs. It's just my patch
> > > > >> added a note. But just to figure out where that triggers, can you do
> > > > >>
> > > > >> -               pr_warn_once("wait_for_initramfs() called before
> > > > >> rootfs_initcalls\n");
> > > > >> +               WARN_ONCE(1, "wait_for_initramfs() called before
> > > > >> rootfs_initcalls\n");
> > > > >>
> > > > >> in init/initramfs.c.
> > > > >>
> > > > >
> > > > > I've managed to reproduce the panic with the patch.
> > > > >
> > > > > [    1.498654] NIP [c0000000000137d4] wait_for_initramfs+0x94/0xa4
> > > > > [    1.498661] LR [c0000000000137d0] wait_for_initramfs+0x90/0xa4
> > > > > [    1.498668] Call Trace:
> > > > > [    1.498671] [c000000027debd60] [c0000000000137d0]
> > > > > wait_for_initramfs+0x90/0xa4 (unreliable)
> > > > > [    1.498680] [c000000027debdc0] [c000000000172fc8]
> > > > > call_usermodehelper_exec_async+0x178/0x2c0
> > > > > [    1.498691] [c000000027debe10] [c00000000000d6ec]
> > > > > ret_from_kernel_thread+0x5c/0x70
> > > >
> > > > Thanks, but unfortunately (and I should have known better) that doesn't
> > > > tell us who actually initated that call_usermodehelper - it's most
> > > > likely some request_module() call. But again, I don't think this is
> > > > related to the later crash.
> > > >
> > > > >>>>> [    1.764430] Initramfs unpacking failed: no cpio magic
> > > > >>>>
> > > > >>>> Whoa, that's not good. Did something scramble over the initramfs memory
> > > > >>>> while it was being unpacked? It's been .2 seconds since the start of the
> > > > >>>> unpacking, so it's unlikely the very beginning of the initramfs is corrupt.
> > > > >>>>
> > > > >>>> Can you try booting with initramfs_async=0 on the command line and see
> > > > >>>> if the kernel still crashes?
> > > > >
> > > > > Using initramfs_async=0 I was also able to reproduce the panic.
> > > >
> > > > Hm, that's very interesting. Can you share the log for that as well?
> > >
> > > [    0.000000] Kernel command line:
> > > root=UUID=72f391f6-e71f-41a6-ba16-2c25460203ed ro initramfs_async=0
> > > [    0.000000] printk: log_buf_len individual max cpu contribution: 4096 bytes
> > > [    0.000000] printk: log_buf_len total cpu_extra contributions: 782336 bytes
> > > [    0.000000] printk: log_buf_len min size: 262144 bytes
> > > [    0.000000] printk: log_buf_len: 1048576 bytes
> > > [    0.000000] printk: early log buf free: 253968(96%)
> > > [    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
> > > [    0.000000] Memory: 1017540928K/1073741824K available (17472K
> > > kernel code, 3072K rwdata, 4992K rodata, 5760K init, 1818K bss,
> > > 2510528K reserved, 53690368K cma-reserved)
> > > [    0.000000] random: get_random_u64 called from
> > > __kmem_cache_create+0x3c/0x770 with crng_init=0
> > > <snip>
> > > [    1.366341] HugeTLB registered 16.0 MiB page size, pre-allocated 0 pages
> > > [    1.366348] HugeTLB registered 16.0 GiB page size, pre-allocated 0 pages
> > > [    1.560635] alg: No test for 842 (842-generic)
> > > [    1.560677] alg: No test for 842 (842-scomp)
> > > [    1.560824] wait_for_initramfs() called before rootfs_initcalls
> > > [    1.565123] raid6: skip pq benchmark and using algorithm vpermxor8
> > > [    1.565132] raid6: using intx1 recovery algorithm
> > > [    1.565318] iommu: Default domain type: Translated
> > > [    1.565402] vgaarb: loaded
> > > [    1.565663] SCSI subsystem initialized
> > > [    1.565829] usbcore: registered new interface driver usbfs
> > > [    1.565841] usbcore: registered new interface driver hub
> > > [    1.565917] usbcore: registered new device driver usb
> > > [    1.565944] pps_core: LinuxPPS API ver. 1 registered
> > > [    1.565949] pps_core: Software ver. 5.3.6 - Copyright 2005-2007
> > > Rodolfo Giometti <giometti@...ux.it>
> > > [    1.565957] PTP clock support registered
> > > [    1.566137] EDAC MC: Ver: 3.0.0
> > > [    1.566551] NetLabel: Initializing
> > > [    1.566555] NetLabel:  domain hash size = 128
> > > [    1.566559] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
> > > [    1.566578] NetLabel:  unlabeled traffic allowed by default
> > > [    1.568021] clocksource: Switched to clocksource timebase
> > > [    1.591752] VFS: Disk quotas dquot_6.6.0
> > > [    1.591918] VFS: Dquot-cache hash table entries: 8192 (order 0, 65536 bytes)
> > > [    1.594487] NET: Registered protocol family 2
> > > [    1.594673] IP idents hash table entries: 262144 (order: 5, 2097152
> > > bytes, vmalloc)
> > > [    1.600286] tcp_listen_portaddr_hash hash table entries: 65536
> > > (order: 4, 1048576 bytes, vmalloc)
> > > [    1.600585] TCP established hash table entries: 524288 (order: 6,
> > > 4194304 bytes, vmalloc)
> > > [    1.601814] TCP bind hash table entries: 65536 (order: 4, 1048576
> > > bytes, vmalloc)
> > > [    1.601991] TCP: Hash tables configured (established 524288 bind 65536)
> > > [    1.602677] MPTCP token hash table entries: 65536 (order: 4,
> > > 1572864 bytes, vmalloc)
> > > [    1.602943] UDP hash table entries: 65536 (order: 5, 2097152 bytes, vmalloc)
> > > [    1.603347] UDP-Lite hash table entries: 65536 (order: 5, 2097152
> > > bytes, vmalloc)
> > > [    1.604431] NET: Registered protocol family 1
> > > [    1.604443] NET: Registered protocol family 44
> > > [    1.604571] pci 0005:03:00.0: enabling device (0140 -> 0142)
> > > [    1.604656] PCI: CLS 128 bytes, default 128
> > > [    1.604850] Trying to unpack rootfs image as initramfs...
> > > [    1.774342] Initramfs unpacking failed: no cpio magic
> > > [    1.775307] Freeing initrd memory: 18176K
> > > [    1.775594] rtas_flash: no firmware flash support
> > > [    1.780166] Initialise system trusted keyrings
> > > [    1.780190] Key type blacklist registered
> > > [    1.780364] workingset: timestamp_bits=38 max_order=24 bucket_order=0
> > > [    1.782469] zbud: loaded
> > > [    1.825156] NET: Registered protocol family 38
> > > [    1.825169] xor: measuring software checksum speed
> > > [    1.825925]    8regs           : 13170 MB/sec
> > > [    1.826748]    8regs_prefetch  : 12031 MB/sec
> > > [    1.827473]    32regs          : 13662 MB/sec
> > > [    1.828249]    32regs_prefetch : 12820 MB/sec
> > > [    1.828635]    altivec         : 25906 MB/sec
> > > [    1.828639] xor: using function: altivec (25906 MB/sec)
> > > [    1.828645] Key type asymmetric registered
> > > [    1.828649] Asymmetric key parser 'x509' registered
> > > [    1.828661] Block layer SCSI generic (bsg) driver version 0.4
> > > loaded (major 245)
> > > [    1.828820] io scheduler mq-deadline registered
> > > [    1.828825] io scheduler kyber registered
> > > [    1.828932] io scheduler bfq registered
> > > [    1.831304] atomic64_test: passed
> > > [    1.832070] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
> > > [    1.832277] hvc0: raw protocol on /ibm,opal/consoles/serial@0 (boot console)
> > > [    1.832527] hvc1: hvsi protocol on /ibm,opal/consoles/serial@1
> > > [    1.832555] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled
> > > [    1.834347] Non-volatile memory driver v1.3
> > > [    1.836184] libphy: Fixed MDIO Bus: probed
> > > [    1.836295] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> > > [    1.836311] ehci-pci: EHCI PCI platform driver
> > > [    1.836325] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> > > [    1.836342] ohci-pci: OHCI PCI platform driver
> > > [    1.836356] uhci_hcd: USB Universal Host Controller Interface driver
> > > [    1.836523] xhci_hcd 0005:03:00.0: xHCI Host Controller
> > > [    1.836635] xhci_hcd 0005:03:00.0: new USB bus registered, assigned
> > > bus number 1
> > > [    1.836788] xhci_hcd 0005:03:00.0: hcc params 0x0270f06d hci
> > > version 0x96 quirks 0x0000000004000000
> > > [    1.837236] usb usb1: New USB device found, idVendor=1d6b,
> > > idProduct=0002, bcdDevice= 5.13
> > > [    1.837245] usb usb1: New USB device strings: Mfr=3, Product=2,
> > > SerialNumber=1
> > > [    1.837252] usb usb1: Product: xHCI Host Controller
> > > [    1.837257] usb usb1: Manufacturer: Linux 5.13.0-rc3 xhci-hcd
> > > [    1.837263] usb usb1: SerialNumber: 0005:03:00.0
> > > [    1.837418] hub 1-0:1.0: USB hub found
> > > [    1.837433] hub 1-0:1.0: 4 ports detected
> > > [    1.837605] xhci_hcd 0005:03:00.0: xHCI Host Controller
> > > [    1.837662] xhci_hcd 0005:03:00.0: new USB bus registered, assigned
> > > bus number 2
> > > [    1.837679] xhci_hcd 0005:03:00.0: Host supports USB 3.0 SuperSpeed
> > > [    1.837710] usb usb2: We don't know the algorithms for LPM for this
> > > host, disabling LPM.
> > > [    1.837742] usb usb2: New USB device found, idVendor=1d6b,
> > > idProduct=0003, bcdDevice= 5.13
> > > [    1.837750] usb usb2: New USB device strings: Mfr=3, Product=2,
> > > SerialNumber=1
> > > [    1.837756] usb usb2: Product: xHCI Host Controller
> > > [    1.837761] usb usb2: Manufacturer: Linux 5.13.0-rc3 xhci-hcd
> > > [    1.837767] usb usb2: SerialNumber: 0005:03:00.0
> > > [    1.837884] hub 2-0:1.0: USB hub found
> > > [    1.837897] hub 2-0:1.0: 4 ports detected
> > > [    1.838074] usbcore: registered new interface driver usbserial_generic
> > > [    1.838086] usbserial: USB Serial support registered for generic
> > > [    1.838123] mousedev: PS/2 mouse device common for all mice
> > > [    1.841900] device-mapper: uevent: version 1.0.3
> > > [    1.842050] device-mapper: ioctl: 4.45.0-ioctl (2021-03-22)
> > > initialised: dm-devel@...hat.com
> > > [    1.842352] powernv-cpufreq: cpufreq pstate min 0xffffffda nominal
> > > 0xfffffff7 max 0x0
> > > [    1.842358] powernv-cpufreq: Workload Optimized Frequency is
> > > disabled in the platform
> > > [    1.847336] hid: raw HID events driver (C) Jiri Kosina
> > > [    1.847386] usbcore: registered new interface driver usbhid
> > > [    1.847391] usbhid: USB HID core driver
> > > [    1.847646] drop_monitor: Initializing network drop monitor service
> > > [    1.847817] Initializing XFRM netlink socket
> > > [    1.848236] NET: Registered protocol family 10
> > > [    1.861274] Segment Routing with IPv6
> > > [    1.861288] RPL Segment Routing with IPv6
> > > [    1.861313] mip6: Mobile IPv6
> > > [    1.861318] NET: Registered protocol family 17
> > > [    1.861392] secvar-sysfs: secvar: failed to retrieve secvar operations.
> > > [    1.861424] drmem: No dynamic reconfiguration memory found
> > > [    1.861631] registered taskstats version 1
> > > [    1.861650] Loading compiled-in X.509 certificates
> > > [    1.862965] Loaded X.509 cert 'Build time autogenerated kernel key:
> > > 97604d93c367cf27b215cdfd062467d582f7e126'
> > > [    1.864430] zswap: loaded using pool lzo/zbud
> > > [    1.864634] debug_vm_pgtable: [debug_vm_pgtable         ]:
> > > Validating architecture page table helpers
> > > [    1.865112] Key type ._fscrypt registered
> > > [    1.865118] Key type .fscrypt registered
> > > [    1.865124] Key type fscrypt-provisioning registered
> > > [    1.866849] Btrfs loaded, crc32c=crc32c-generic, zoned=yes
> > > [    1.866898] pstore: Using crash dump compression: deflate
> > > [    1.867485] Key type encrypted registered
> > > [    1.867690] Secure boot mode disabled
> > > [    1.867725] ima: No TPM chip found, activating TPM-bypass!
> > > [    1.867735] Loading compiled-in module X.509 certificates
> > > [    1.869037] Loaded X.509 cert 'Build time autogenerated kernel key:
> > > 97604d93c367cf27b215cdfd062467d582f7e126'
> > > [    1.869049] ima: Allocated hash algorithm: sha256
> > > [    1.869223] Secure boot mode disabled
> > > [    1.869378] Trusted boot mode disabled
> > > [    1.869385] ima: No architecture policies found
> > > [    1.869411] evm: Initialising EVM extended attributes:
> > > [    1.869418] evm: security.selinux
> > > [    1.869423] evm: security.ima
> > > [    1.869428] evm: security.capability
> > > [    1.869433] evm: HMAC attrs: 0x1
> > > [    1.872544] Freeing unused kernel memory: 5760K
> > > [    1.872555] Kernel memory protection not selected by kernel config.
> > > [    1.872566] Run /init as init process
> > > [    1.872706] Failed to execute /init (error -2)
> > > [    1.872713] Run /sbin/init as init process
> > > [    1.872755] Run /etc/init as init process
> > > [    1.872794] Run /bin/init as init process
> > > [    1.872834] Run /bin/sh as init process
> > > [    1.872891] Kernel panic - not syncing: No working init found.  Try
> > > passing init= option to kernel. See Linux
> > > Documentation/admin-guide/init.rst for guidance.
> > > [    1.872906] CPU: 42 PID: 1 Comm: swapper/0 Not tainted 5.13.0-rc3 #1
> > > [    1.872917] Call Trace:
> > > [    1.872922] [c0000080010d7cc0] [c0000000009f2640]
> > > dump_stack+0xc4/0x114 (unreliable)
> > > [    1.872939] [c0000080010d7d10] [c00000000014b9e0] panic+0x168/0x408
> > > [    1.872952] [c0000080010d7da0] [c000000000012964] kernel_init+0x14c/0x168
> > > [    1.872964] [c0000080010d7e10] [c00000000000d6ec]
> > > ret_from_kernel_thread+0x5c/0x70
> > >
> > > >
> > > > And, perhaps asking a silly question, does the crash go away if you
> > > > revert e7cb072eb988e46295512617c39d004f9e1c26f8 ?
> > 
> > Okay, indeed the problem is not with this commit , I've just hit the
> > panic with reverted commit.
> > 
> > [    1.302017] EEH: Capable adapter found: recovery enabled.
> > [    1.308206] opal-power: OPAL EPOW, DPO support detected.
> > [    1.308866] powernv-rng: Registering arch random hook.
> > [    1.310984] Kprobes globally optimized
> > [    1.311466] HugeTLB registered 16.0 MiB page size, pre-allocated 0 pages
> > [    1.311473] HugeTLB registered 16.0 GiB page size, pre-allocated 0 pages
> > [    1.505658] alg: No test for 842 (842-generic)
> > [    1.505699] alg: No test for 842 (842-scomp)
> > [    1.510121] raid6: skip pq benchmark and using algorithm vpermxor8
> > [    1.510128] raid6: using intx1 recovery algorithm
> > [    1.510314] iommu: Default domain type: Translated
> > [    1.510402] vgaarb: loaded
> > [    1.510579] SCSI subsystem initialized
> > [    1.510732] usbcore: registered new interface driver usbfs
> > [    1.510745] usbcore: registered new interface driver hub
> > [    1.510803] usbcore: registered new device driver usb
> > [    1.510829] pps_core: LinuxPPS API ver. 1 registered
> > [    1.510834] pps_core: Software ver. 5.3.6 - Copyright 2005-2007
> > Rodolfo Giometti <giometti@...ux.it>
> > [    1.510843] PTP clock support registered
> > [    1.511011] EDAC MC: Ver: 3.0.0
> > [    1.511399] NetLabel: Initializing
> > [    1.511404] NetLabel:  domain hash size = 128
> > [    1.511408] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
> > [    1.511427] NetLabel:  unlabeled traffic allowed by default
> > [    1.512949] clocksource: Switched to clocksource timebase
> > [    1.536237] VFS: Disk quotas dquot_6.6.0
> > [    1.536380] VFS: Dquot-cache hash table entries: 8192 (order 0, 65536 bytes)
> > [    1.538890] NET: Registered protocol family 2
> > [    1.539074] IP idents hash table entries: 262144 (order: 5, 2097152
> > bytes, vmalloc)
> > [    1.544621] tcp_listen_portaddr_hash hash table entries: 65536
> > (order: 4, 1048576 bytes, vmalloc)
> > [    1.544887] TCP established hash table entries: 524288 (order: 6,
> > 4194304 bytes, vmalloc)
> > [    1.546117] TCP bind hash table entries: 65536 (order: 4, 1048576
> > bytes, vmalloc)
> > [    1.546298] TCP: Hash tables configured (established 524288 bind 65536)
> > [    1.546993] MPTCP token hash table entries: 65536 (order: 4,
> > 1572864 bytes, vmalloc)
> > [    1.547255] UDP hash table entries: 65536 (order: 5, 2097152 bytes, vmalloc)
> > [    1.547648] UDP-Lite hash table entries: 65536 (order: 5, 2097152
> > bytes, vmalloc)
> > [    1.548726] NET: Registered protocol family 1
> > [    1.548739] NET: Registered protocol family 44
> > [    1.548864] pci 0005:03:00.0: enabling device (0140 -> 0142)
> > [    1.548936] PCI: CLS 128 bytes, default 128
> > [    1.549005] Trying to unpack rootfs image as initramfs...
> > [    1.723810] Initramfs unpacking failed: junk within compressed archive
> 
> This sounds similar to an old bug we had on Amazon instances which was
> fixed below commit:
> commit 428c491332bca498c8eb2127669af51506c346c7
> Author: Guilherme G. Piccoli <gpiccoli@...onical.com>
> Date:   Fri Mar 20 09:55:34 2020 -0300
> 
>     net: ena: Add PCI shutdown handler to allow safe kexec
> 
> I think it would helpful if petiboot people can do some debugging to see
> if anything wrong happened on the petiboot kernel/drivers.
> 
> 
> > [    1.725056] Freeing initrd memory: 20992K
> > [    1.725342] rtas_flash: no firmware flash support
> > [    1.729768] Initialise system trusted keyrings
> > [    1.729792] Key type blacklist registered
> > [    1.729965] workingset: timestamp_bits=38 max_order=24 bucket_order=0
> > [    1.732064] zbud: loaded
> > [    1.775945] NET: Registered protocol family 38
> > [    1.775963] xor: measuring software checksum speed
> > [    1.776740]    8regs           : 13166 MB/sec
> > [    1.777564]    8regs_prefetch  : 12024 MB/sec
> > [    1.778289]    32regs          : 13652 MB/sec
> > [    1.779061]    32regs_prefetch : 12819 MB/sec
> > [    1.779447]    altivec         : 25821 MB/sec
> > [    1.779452] xor: using function: altivec (25821 MB/sec)
> > [    1.779457] Key type asymmetric registered
> > [    1.779462] Asymmetric key parser 'x509' registered
> > [    1.779495] Block layer SCSI generic (bsg) driver version 0.4
> > loaded (major 245)
> > [    1.779652] io scheduler mq-deadline registered
> > [    1.779657] io scheduler kyber registered
> > [    1.779790] io scheduler bfq registered
> > [    1.782225] atomic64_test: passed
> > [    1.783089] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
> > [    1.783314] hvc0: raw protocol on /ibm,opal/consoles/serial@0 (boot console)
> > [    1.783555] hvc1: hvsi protocol on /ibm,opal/consoles/serial@1
> > [    1.783582] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled
> > [    1.785366] Non-volatile memory driver v1.3
> > [    1.787231] libphy: Fixed MDIO Bus: probed
> > [    1.787345] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> > [    1.787360] ehci-pci: EHCI PCI platform driver
> > [    1.787374] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> > [    1.787391] ohci-pci: OHCI PCI platform driver
> > [    1.787404] uhci_hcd: USB Universal Host Controller Interface driver
> > [    1.787580] xhci_hcd 0005:03:00.0: xHCI Host Controller
> > [    1.787693] xhci_hcd 0005:03:00.0: new USB bus registered, assigned
> > bus number 1
> > [    1.787844] xhci_hcd 0005:03:00.0: hcc params 0x0270f06d hci
> > version 0x96 quirks 0x0000000004000000
> > [    1.788305] usb usb1: New USB device found, idVendor=1d6b,
> > idProduct=0002, bcdDevice= 5.13
> > [    1.788314] usb usb1: New USB device strings: Mfr=3, Product=2,
> > SerialNumber=1
> > [    1.788322] usb usb1: Product: xHCI Host Controller
> > [    1.788327] usb usb1: Manufacturer: Linux 5.13.0-rc3 xhci-hcd
> > [    1.788333] usb usb1: SerialNumber: 0005:03:00.0
> > [    1.788498] hub 1-0:1.0: USB hub found
> > [    1.788514] hub 1-0:1.0: 4 ports detected
> > [    1.788685] xhci_hcd 0005:03:00.0: xHCI Host Controller
> > [    1.788745] xhci_hcd 0005:03:00.0: new USB bus registered, assigned
> > bus number 2
> > [    1.788763] xhci_hcd 0005:03:00.0: Host supports USB 3.0 SuperSpeed
> > [    1.788787] usb usb2: We don't know the algorithms for LPM for this
> > host, disabling LPM.
> > [    1.788819] usb usb2: New USB device found, idVendor=1d6b,
> > idProduct=0003, bcdDevice= 5.13
> > [    1.788827] usb usb2: New USB device strings: Mfr=3, Product=2,
> > SerialNumber=1
> > [    1.788834] usb usb2: Product: xHCI Host Controller
> > [    1.788839] usb usb2: Manufacturer: Linux 5.13.0-rc3 xhci-hcd
> > [    1.788845] usb usb2: SerialNumber: 0005:03:00.0
> > [    1.788961] hub 2-0:1.0: USB hub found
> > [    1.788974] hub 2-0:1.0: 4 ports detected
> > [    1.789146] usbcore: registered new interface driver usbserial_generic
> > [    1.789157] usbserial: USB Serial support registered for generic
> > [    1.789196] mousedev: PS/2 mouse device common for all mice
> > [    1.793122] device-mapper: uevent: version 1.0.3
> > [    1.793282] device-mapper: ioctl: 4.45.0-ioctl (2021-03-22)
> > initialised: dm-devel@...hat.com
> > [    1.793588] powernv-cpufreq: cpufreq pstate min 0xffffffda nominal
> > 0xfffffff7 max 0x0
> > [    1.793595] powernv-cpufreq: Workload Optimized Frequency is
> > disabled in the platform
> > [    1.798302] hid: raw HID events driver (C) Jiri Kosina
> > [    1.798344] usbcore: registered new interface driver usbhid
> > [    1.798349] usbhid: USB HID core driver
> > [    1.798600] drop_monitor: Initializing network drop monitor service
> > [    1.798750] Initializing XFRM netlink socket
> > [    1.799148] NET: Registered protocol family 10
> > [    1.811611] Segment Routing with IPv6
> > [    1.811627] RPL Segment Routing with IPv6
> > [    1.811653] mip6: Mobile IPv6
> > [    1.811658] NET: Registered protocol family 17
> > [    1.811729] secvar-sysfs: secvar: failed to retrieve secvar operations.
> > [    1.811761] drmem: No dynamic reconfiguration memory found
> > [    1.811937] registered taskstats version 1
> > [    1.811955] Loading compiled-in X.509 certificates
> > [    1.812905] Loaded X.509 cert 'Build time autogenerated kernel key:
> > 5a49ad3d49566246c5ef57be0cf7d450502ed699'
> > [    1.813953] zswap: loaded using pool lzo/zbud
> > [    1.814131] debug_vm_pgtable: [debug_vm_pgtable         ]:
> > Validating architecture page table helpers
> > [    1.814498] Key type ._fscrypt registered
> > [    1.814503] Key type .fscrypt registered
> > [    1.814506] Key type fscrypt-provisioning registered
> > [    1.815660] Btrfs loaded, crc32c=crc32c-generic, zoned=yes
> > [    1.815695] pstore: Using crash dump compression: deflate
> > [    1.816338] Key type encrypted registered
> > [    1.816484] Secure boot mode disabled
> > [    1.816490] ima: No TPM chip found, activating TPM-bypass!
> > [    1.816496] Loading compiled-in module X.509 certificates
> > [    1.817293] Loaded X.509 cert 'Build time autogenerated kernel key:
> > 5a49ad3d49566246c5ef57be0cf7d450502ed699'
> > [    1.817300] ima: Allocated hash algorithm: sha256
> > [    1.817409] Secure boot mode disabled
> > [    1.817506] Trusted boot mode disabled
> > [    1.817510] ima: No architecture policies found
> > [    1.817525] evm: Initialising EVM extended attributes:
> > [    1.817529] evm: security.selinux
> > [    1.817532] evm: security.ima
> > [    1.817535] evm: security.capability
> > [    1.817539] evm: HMAC attrs: 0x1
> > [    1.819569] Freeing unused kernel memory: 5760K
> > [    1.819575] Kernel memory protection not selected by kernel config.
> > [    1.819583] Run /init as init process
> > [    1.819652] Failed to execute /init (error -2)
> > [    1.819658] Run /sbin/init as init process
> > [    1.819684] Run /etc/init as init process
> > [    1.819710] Run /bin/init as init process
> > [    1.819738] Run /bin/sh as init process
> > [    1.819777] Kernel panic - not syncing: No working init found.  Try
> > passing init= option to kernel. See Linux
> > Documentation/admin-guide/init.rst for guidance.
> > [    1.819787] CPU: 8 PID: 1 Comm: swapper/0 Not tainted 5.13.0-rc3 #1
> > [    1.819794] Call Trace:
> > [    1.819796] [c0000040010e3cc0] [c0000000009f25c0]
> > dump_stack+0xc4/0x114 (unreliable)
> > [    1.819809] [c0000040010e3d10] [c00000000014b960] panic+0x168/0x408
> > [    1.819818] [c0000040010e3da0] [c000000000012964] kernel_init+0x14c/0x168
> > [    1.819825] [c0000040010e3e10] [c00000000000d6ec]
> > ret_from_kernel_thread+0x5c/0x70
> > [    1.835866] ---[ end Kernel panic - not syncing: No working init
> > found.  Try passing init= option to kernel. See Linux
> > Documentation/admin-guide/init.rst for guidance. ]
> > 
> > Bruno
> > >
> > > Sure, I'll try it and let you know.
> > >
> > > Bruno
> > >
> > > >
> > > > Thanks,
> > > > Rasmus
> > > >
> > 
> 
> Thanks
> Dave
> 

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