Hi,
Le 03/08/2025 à 21:27, Sabyrzhan Tasbolatov a écrit :
On Wed, Jul 23, 2025 at 10:33 PM Andrey Ryabinin <ryabinin....@gmail.com> wrote:
...
I don't know if it's a real problem or not. I'm just pointing out that we might
have tricky use case here and maybe that's a problem, because nobody had such
use
case in mind. But maybe it's just fine.
I think we just need to boot test it, to see if this works.
...
powerpc used static key same way before your patches, so powerpc should be fine.
Hello,
Just heads up that I am still working on v4.
While I can verify the success on compile and booting with my changes
on x86, arm with SW/HW_TAGS modes, I'm having issues with PowerPC, UML
arch that selects ARCH_DEFER_KASAN.
Adding Christophe Leroy in TO. Please advise on the powerpc panic issue.
I don't have the problem you report. Is it with your v3 series ?
I started from
https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/log/?h=merge
(commit de12314b471bf)
Took your series with
b4 shazam 20250717142732.292822-1-snovit...@gmail.com
built ppc64le_defconfig
And successfully boot it under QEMU:
$ qemu-system-ppc64 -M pseries,x-vof=on -m 1G -nographic -vga none
-kernel vmlinux -initrd qemu/rootfs-el.cpio.gz -append noreboot
qemu-system-ppc64: warning: TCG doesn't support requested feature,
cap-cfpc=workaround
qemu-system-ppc64: warning: TCG doesn't support requested feature,
cap-sbbc=workaround
qemu-system-ppc64: warning: TCG doesn't support requested feature,
cap-ibs=workaround
qemu-system-ppc64: warning: TCG doesn't support requested feature,
cap-ccf-assist=on
[ 0.000000][ T0] random: crng init done
[ 0.000000][ T0] radix-mmu: Page sizes from device-tree:
[ 0.000000][ T0] radix-mmu: Page size shift = 12 AP=0x0
[ 0.000000][ T0] radix-mmu: Page size shift = 16 AP=0x5
[ 0.000000][ T0] radix-mmu: Page size shift = 21 AP=0x1
[ 0.000000][ T0] radix-mmu: Page size shift = 30 AP=0x2
[ 0.000000][ T0] Activating Kernel Userspace Access Prevention
[ 0.000000][ T0] Activating Kernel Userspace Execution Prevention
[ 0.000000][ T0] radix-mmu: Mapped
0x0000000000000000-0x0000000003e00000 with 2.00 MiB pages (exec)
[ 0.000000][ T0] radix-mmu: Mapped
0x0000000003e00000-0x0000000040000000 with 2.00 MiB pages
[ 0.000000][ T0] lpar: Using radix MMU under hypervisor
[ 0.000000][ T0] Linux version 6.16.0-02450-g1c11a8599f68
(chle...@po20335.idsi0.si.c-s.fr) (powerpc64-linux-gcc (GCC) 8.5.0, GNU
ld (GNU Binutils) 2.36.1) #1459 SMP Mon Aug 4 12:49:11 CEST 2025
[ 0.000000][ T0] KernelAddressSanitizer initialized (generic)
[ 0.000000][ T0] OF: reserved mem: Reserved memory: No
reserved-memory node in the DT
[ 0.000000][ T0] Found initrd at 0xc000000004cf0000:0xc00000000530d15a
[ 0.000000][ T0] Hardware name: IBM pSeries (emulated by qemu)
POWER9 (architected) 0x4e1202 0xf000005 pSeries
[ 0.000000][ T0] printk: legacy bootconsole [udbg0] enabled
[ 0.000000][ T0] Partition configured for 1 cpus.
[ 0.000000][ T0] CPU maps initialized for 1 thread per core
[ 0.000000][ T0] numa: Partition configured for 1 NUMA nodes.
[ 0.000000][ T0] -----------------------------------------------------
[ 0.000000][ T0] phys_mem_size = 0x40000000
[ 0.000000][ T0] dcache_bsize = 0x80
[ 0.000000][ T0] icache_bsize = 0x80
[ 0.000000][ T0] cpu_features = 0x0001c06b8f4f9187
[ 0.000000][ T0] possible = 0x003ffbfbcf5fb187
[ 0.000000][ T0] always = 0x0000000380008181
[ 0.000000][ T0] cpu_user_features = 0xdc0065c2 0xaef00000
[ 0.000000][ T0] mmu_features = 0x3c007641
[ 0.000000][ T0] firmware_features = 0x00000a85455a445f
[ 0.000000][ T0] vmalloc start = 0xc008000000000000
[ 0.000000][ T0] IO start = 0xc00a000000000000
[ 0.000000][ T0] vmemmap start = 0xc00c000000000000
[ 0.000000][ T0] -----------------------------------------------------
[ 0.000000][ T0] NODE_DATA(0) allocated [mem 0x3fb30800-0x3fb37fff]
[ 0.000000][ T0] rfi-flush: fallback displacement flush available
[ 0.000000][ T0] rfi-flush: ori type flush available
[ 0.000000][ T0] rfi-flush: mttrig type flush available
[ 0.000000][ T0] count-cache-flush: hardware flush enabled.
[ 0.000000][ T0] link-stack-flush: software flush enabled.
[ 0.000000][ T0] stf-barrier: eieio barrier available
[ 0.000000][ T0] PPC64 nvram contains 65536 bytes
[ 0.000000][ T0] barrier-nospec: using ORI speculation barrier
[ 0.000000][ T0] Zone ranges:
[ 0.000000][ T0] Normal [mem
0x0000000000000000-0x000000003fffffff]
[ 0.000000][ T0] Device empty
[ 0.000000][ T0] Movable zone start for each node
[ 0.000000][ T0] Early memory node ranges
[ 0.000000][ T0] node 0: [mem
0x0000000000000000-0x000000003fffffff]
[ 0.000000][ T0] Initmem setup node 0 [mem
0x0000000000000000-0x000000003fffffff]
[ 0.000000][ T0] percpu: Embedded 3 pages/cpu s122904 r0 d73704
u196608
[ 0.000000][ T0] Kernel command line: noreboot
[ 0.000000][ T0] Unknown kernel command line parameters
"noreboot", will be passed to user space.
[ 0.000000][ T0] printk: log buffer data + meta data: 262144 +
917504 = 1179648 bytes
[ 0.000000][ T0] Dentry cache hash table entries: 131072 (order:
4, 1048576 bytes, linear)
[ 0.000000][ T0] Inode-cache hash table entries: 65536 (order: 3,
524288 bytes, linear)
[ 0.000000][ T0] Fallback order for Node 0: 0
[ 0.000000][ T0] Built 1 zonelists, mobility grouping on. Total
pages: 16384
[ 0.000000][ T0] Policy zone: Normal
[ 0.000000][ T0] mem auto-init: stack:off, heap alloc:off, heap
free:off
[ 0.000000][ T0] stackdepot: allocating hash table via
alloc_large_system_hash
[ 0.000000][ T0] stackdepot hash table entries: 1048576 (order: 8,
16777216 bytes, linear)
[ 0.000000][ T0] SLUB: HWalign=128, Order=0-3, MinObjects=0,
CPUs=1, Nodes=1
[ 0.000000][ T0] ftrace: allocating 47840 entries in 12 pages
[ 0.000000][ T0] ftrace: allocated 12 pages with 2 groups
[ 0.000000][ T0] rcu: Hierarchical RCU implementation.
[ 0.000000][ T0] rcu: RCU event tracing is enabled.
[ 0.000000][ T0] rcu: RCU restricting CPUs from NR_CPUS=2048 to
nr_cpu_ids=1.
[ 0.000000][ T0] Rude variant of Tasks RCU enabled.
[ 0.000000][ T0] Tracing variant of Tasks RCU enabled.
[ 0.000000][ T0] rcu: RCU calculated value of scheduler-enlistment
delay is 100 jiffies.
[ 0.000000][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16,
nr_cpu_ids=1
[ 0.000000][ T0] RCU Tasks Rude: Setting shift to 0 and lim to 1
rcu_task_cb_adjust=1 rcu_task_cpu_ids=1.
[ 0.000000][ T0] RCU Tasks Trace: Setting shift to 0 and lim to 1
rcu_task_cb_adjust=1 rcu_task_cpu_ids=1.
[ 0.000000][ T0] NR_IRQS: 512, nr_irqs: 512, preallocated irqs: 16
[ 0.000000][ T0] xive: Using IRQ range [0-0]
[ 0.000000][ T0] xive: Interrupt handling initialized with spapr
backend
[ 0.000000][ T0] xive: Using priority 6 for all interrupts
[ 0.000000][ T0] xive: Using 64kB queues
[ 0.000000][ T0] rcu: srcu_init: Setting srcu_struct sizes based
on contention.
[ 0.000290][ T0] time_init: 56 bit decrementer (max: 7fffffffffffff)
[ 0.001690][ T0] clocksource: timebase: mask: 0xffffffffffffffff
max_cycles: 0x761537d007, max_idle_ns: 440795202126 ns
[ 0.003232][ T0] clocksource: timebase mult[1f40000] shift[24]
registered
[ 0.040308][ T0] Console: colour dummy device 80x25
[ 0.042553][ T0] printk: legacy console [hvc0] enabled
[ 0.042553][ T0] printk: legacy console [hvc0] enabled
[ 0.043883][ T0] printk: legacy bootconsole [udbg0] disabled
[ 0.043883][ T0] printk: legacy bootconsole [udbg0] disabled
[ 0.052810][ T0] pid_max: default: 32768 minimum: 301
[ 0.062682][ T0] LSM: initializing
lsm=lockdown,capability,landlock,yama,selinux,bpf,ima
[ 0.075902][ T0] landlock: Up and running.
[ 0.076246][ T0] Yama: becoming mindful.
[ 0.077639][ T0] SELinux: Initializing.
[ 0.157184][ T0] LSM support for eBPF active
[ 0.170713][ T0] Mount-cache hash table entries: 8192 (order: 0,
65536 bytes, linear)
[ 0.171081][ T0] Mountpoint-cache hash table entries: 8192 (order:
0, 65536 bytes, linear)
[ 0.319421][ T1] POWER9 performance monitor hardware support
registered
[ 0.329508][ T1] rcu: Hierarchical SRCU implementation.
[ 0.329940][ T1] rcu: Max phase no-delay instances is 400.
[ 0.382714][ T1] smp: Bringing up secondary CPUs ...
[ 0.385679][ T1] smp: Brought up 1 node, 1 CPU
[ 0.392599][ T1] numa: Node 0 CPUs: 0
[ 0.445093][ T20] node 0 deferred pages initialised in 21ms
[ 0.447420][ T1] Memory: 784000K/1048576K available (25600K kernel
code, 9216K rwdata, 23552K rodata, 13824K init, 2373K bss, 254528K
reserved, 0K cma-reserved)
[ 0.469596][ T20] pgdatinit0 (20) used greatest stack depth: 29936
bytes left
[ 0.504269][ T1] devtmpfs: initialized
[ 0.605561][ T1] PCI host bridge /pci@800000020000000 ranges:
[ 0.607269][ T1] IO 0x0000200000000000..0x000020000000ffff ->
0x0000000000000000
[ 0.607837][ T1] MEM 0x0000200080000000..0x00002000ffffffff ->
0x0000000080000000
[ 0.608141][ T1] MEM 0x0000210000000000..0x000021ffffffffff ->
0x0000210000000000
[ 0.623659][ T1] clocksource: jiffies: mask: 0xffffffff
max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns
[ 0.625600][ T1] posixtimers hash table entries: 512 (order: -3,
8192 bytes, linear)
[ 0.627067][ T1] futex hash table entries: 256 (32768 bytes on 1
NUMA nodes, total 32 KiB, linear).
[ 0.692128][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[ 0.714282][ T1] audit: initializing netlink subsys (disabled)
[ 0.722232][ T25] audit: type=2000 audit(1754308137.543:1):
state=initialized audit_enabled=0 res=1
[ 0.743697][ T1] cpuidle: using governor menu
[ 0.755015][ T1] WARNING: nvram corruption detected: 0-length
partition
[ 0.755541][ T1] nvram: No room to create ibm,rtas-log partition,
deleting any obsolete OS partitions...
[ 0.755794][ T1] nvram: Failed to find or create ibm,rtas-log
partition, err -28
[ 0.756219][ T1] nvram: No room to create lnx,oops-log partition,
deleting any obsolete OS partitions...
[ 0.756379][ T1] nvram: Failed to find or create lnx,oops-log
partition, err -28
Linux ppc64le
#1459 SMP Mon Au[ 0.756539][ T1] nvram: Failed to initialize oops
partition!
[ 0.762921][ T1] EEH: pSeries platform initialized
[ 0.808097][ T1] kprobes: kprobe jump-optimization is enabled. All
kprobes are optimized if possible.
[ 1.365147][ T1] HugeTLB: allocation took 0ms with
hugepage_allocation_threads=1
[ 1.366269][ T1] HugeTLB: registered 2.00 MiB page size,
pre-allocated 0 pages
[ 1.366456][ T1] HugeTLB: 0 KiB vmemmap can be freed for a 2.00
MiB page
[ 1.366728][ T1] HugeTLB: registered 1.00 GiB page size,
pre-allocated 0 pages
[ 1.366870][ T1] HugeTLB: 0 KiB vmemmap can be freed for a 1.00
GiB page
[ 1.486251][ T1] iommu: Default domain type: Translated
[ 1.486543][ T1] iommu: DMA domain TLB invalidation policy: strict
mode
[ 1.525452][ T1] SCSI subsystem initialized
[ 1.552424][ T1] usbcore: registered new interface driver usbfs
[ 1.554049][ T1] usbcore: registered new interface driver hub
[ 1.559907][ T1] usbcore: registered new device driver usb
[ 1.562100][ T1] pps_core: LinuxPPS API ver. 1 registered
[ 1.562266][ T1] pps_core: Software ver. 5.3.6 - Copyright
2005-2007 Rodolfo Giometti <giome...@linux.it>
[ 1.566642][ T1] PTP clock support registered
[ 1.577168][ T1] EDAC MC: Ver: 3.0.0
[ 1.672772][ T1] PCI: Probing PCI hardware
[ 1.833395][ T1] PCI host bridge to bus 0000:00
[ 1.834524][ T1] pci_bus 0000:00: root bus resource [io
0x10000-0x1ffff] (bus address [0x0000-0xffff])
[ 1.835316][ T1] pci_bus 0000:00: root bus resource [mem
0x200080000000-0x2000ffffffff] (bus address [0x80000000-0xffffffff])
[ 1.835750][ T1] pci_bus 0000:00: root bus resource [mem
0x210000000000-0x21ffffffffff 64bit]
[ 1.836268][ T1] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 1.852192][ T1] IOMMU table initialized, virtual merging enabled
[ 1.864698][ T1] pci_bus 0000:00: resource 4 [io 0x10000-0x1ffff]
[ 1.864967][ T1] pci_bus 0000:00: resource 5 [mem
0x200080000000-0x2000ffffffff]
[ 1.865136][ T1] pci_bus 0000:00: resource 6 [mem
0x210000000000-0x21ffffffffff 64bit]
[ 1.865619][ T1] EEH: No capable adapters found: recovery disabled.
[ 1.895816][ T1] vgaarb: loaded
[ 1.906597][ T1] clocksource: Switched to clocksource timebase
[ 7.645823][ T1] NET: Registered PF_INET protocol family
[ 7.650783][ T1] IP idents hash table entries: 16384 (order: 1,
131072 bytes, linear)
[ 7.684628][ T1] tcp_listen_portaddr_hash hash table entries: 4096
(order: 0, 65536 bytes, linear)
[ 7.686311][ T1] Table-perturb hash table entries: 65536 (order:
2, 262144 bytes, linear)
[ 7.687827][ T1] TCP established hash table entries: 8192 (order:
0, 65536 bytes, linear)
[ 7.690430][ T1] TCP bind hash table entries: 8192 (order: 2,
262144 bytes, linear)
[ 7.694736][ T1] TCP: Hash tables configured (established 8192
bind 8192)
[ 7.697887][ T1] UDP hash table entries: 1024 (order: 0, 65536
bytes, linear)
[ 7.700717][ T1] UDP-Lite hash table entries: 1024 (order: 0,
65536 bytes, linear)
[ 7.709437][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family
[ 7.728670][ T1] RPC: Registered named UNIX socket transport module.
[ 7.729411][ T1] RPC: Registered udp transport module.
[ 7.729661][ T1] RPC: Registered tcp transport module.
[ 7.729825][ T1] RPC: Registered tcp-with-tls transport module.
[ 7.731574][ T1] RPC: Registered tcp NFSv4.1 backchannel transport
module.
[ 7.732309][ T1] PCI: CLS 0 bytes, default 128
[ 7.769612][ T12] Trying to unpack rootfs image as initramfs...
[ 7.937617][ T1] Initialise system trusted keyrings
[ 7.942505][ T1] Key type blacklist registered
[ 7.964894][ T1] workingset: timestamp_bits=38 max_order=14
bucket_order=0
[ 8.127738][ T1] NFS: Registering the id_resolver key type
[ 8.129779][ T1] Key type id_resolver registered
[ 8.130646][ T1] Key type id_legacy registered
[ 8.150761][ T1] SGI XFS with ACLs, security attributes, no debug
enabled
[ 8.343926][ T1] integrity: Platform Keyring initialized
[ 8.348809][ T1] Key type asymmetric registered
[ 8.354232][ T1] Asymmetric key parser 'x509' registered
[ 8.372851][ T1] Block layer SCSI generic (bsg) driver version 0.4
loaded (major 247)
[ 8.375844][ T1] io scheduler mq-deadline registered
[ 8.377498][ T1] io scheduler kyber registered
[ 11.082153][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing
disabled
[ 11.199822][ T1] Non-volatile memory driver v1.3
[ 11.749528][ T1] brd: module loaded
[ 12.062135][ T1] loop: module loaded
[ 12.078153][ T1] ipr: IBM Power RAID SCSI Device Driver version:
2.6.4 (March 14, 2017)
[ 12.118444][ T1] ibmvscsi 71000003: SRP_VERSION: 16.a
[ 12.134566][ T1] ibmvscsi 71000003: Maximum ID: 64 Maximum LUN: 32
Maximum Channel: 3
[ 12.135207][ T1] scsi host0: IBM POWER Virtual SCSI Adapter 1.5.9
[ 12.188126][ C0] ibmvscsi 71000003: partner initialization complete
[ 12.191555][ C0] ibmvscsi 71000003: host srp version: 16.a, host
partition qemu (0), OS 2, max io 2097152
[ 12.192709][ C0] ibmvscsi 71000003: sent SRP login
[ 12.193698][ C0] ibmvscsi 71000003: SRP_LOGIN succeeded
[ 12.381686][ T1] scsi 0:0:2:0: CD-ROM QEMU QEMU
CD-ROM 2.5+ PQ: 0 ANSI: 5
[ 17.470934][ T12] Freeing initrd memory: 6208K
[ 18.458146][ C0] sr 0:0:2:0: Power-on or device reset occurred
[ 18.468304][ T1] sr 0:0:2:0: [sr0] scsi3-mmc drive: 16x/50x cd/rw
xa/form2 cdda tray
[ 18.469176][ T1] cdrom: Uniform CD-ROM driver Revision: 3.20
[ 18.507507][ T1] sr 0:0:2:0: Attached scsi generic sg0 type 5
[ 18.535454][ T1] e100: Intel(R) PRO/100 Network Driver
[ 18.535682][ T1] e100: Copyright(c) 1999-2006 Intel Corporation
[ 18.536741][ T1] e1000: Intel(R) PRO/1000 Network Driver
[ 18.536894][ T1] e1000: Copyright (c) 1999-2006 Intel Corporation.
[ 18.538093][ T1] e1000e: Intel(R) PRO/1000 Network Driver
[ 18.538241][ T1] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[ 18.548528][ T1] i2c_dev: i2c /dev entries driver
[ 18.551722][ T1] device-mapper: core: CONFIG_IMA_DISABLE_HTABLE is
disabled. Duplicate IMA measurements will not be recorded in the IMA log.
[ 18.553452][ T1] device-mapper: uevent: version 1.0.3
[ 18.564534][ T1] device-mapper: ioctl: 4.50.0-ioctl (2025-04-28)
initialised: dm-de...@lists.linux.dev
[ 18.591869][ T1] usbcore: registered new interface driver usbhid
[ 18.592226][ T1] usbhid: USB HID core driver
[ 18.594958][ T1] ipip: IPv4 and MPLS over IPv4 tunneling driver
[ 18.611797][ T1] NET: Registered PF_INET6 protocol family
[ 18.651618][ T1] Segment Routing with IPv6
[ 18.653186][ T1] In-situ OAM (IOAM) with IPv6
[ 18.656776][ T1] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[ 18.672737][ T1] NET: Registered PF_PACKET protocol family
[ 18.676757][ T1] Key type dns_resolver registered
[ 18.678951][ T1] secvar-sysfs: Failed to retrieve secvar operations
[ 18.683474][ T1] Running code patching self-tests ...
[ 19.045499][ T1] registered taskstats version 1
[ 19.055453][ T1] Loading compiled-in X.509 certificates
[ 19.106895][ T1] Loaded X.509 cert 'Build time autogenerated
kernel key: 9f01b0d991e9d73077cd296c67edb3efb56e2c47'
[ 19.372917][ T1] Demotion targets for Node 0: null
[ 19.373664][ T1] page_owner is disabled
[ 19.385615][ T1] Secure boot mode disabled
[ 19.387815][ T1] ima: No TPM chip found, activating TPM-bypass!
[ 19.389833][ T1] Loading compiled-in module X.509 certificates
[ 19.406497][ T1] Loaded X.509 cert 'Build time autogenerated
kernel key: 9f01b0d991e9d73077cd296c67edb3efb56e2c47'
[ 19.407680][ T1] ima: Allocated hash algorithm: sha256
[ 19.416714][ T1] Secure boot mode disabled
[ 19.417345][ T1] Trusted boot mode disabled
[ 19.417596][ T1] ima: No architecture policies found
[ 19.426439][ T1] printk: legacy console [netcon0] enabled
[ 19.426791][ T1] netconsole: network logging started
[ 19.610553][ T1] Freeing unused kernel image (initmem) memory: 13824K
[ 19.766345][ T1] Checked W+X mappings: passed, no W+X pages found
[ 19.767739][ T1] rodata_test: all tests were successful
[ 19.768936][ T1] Run /init as init process
[ 20.432221][ T58] mount (58) used greatest stack depth: 26992 bytes
left
[ 20.808923][ T60] mount (60) used greatest stack depth: 26416 bytes
left
mount: mounting devtmpfs on /dev failed: Device or resource busy
Starting syslogd: OK
Starting klogd: OK
Running sysctl: [ 24.879851][ T83] find (83) used greatest stack
depth: 26368 bytes left
[ 24.945794][ T84] xargs (84) used greatest stack depth: 26240 bytes
left
OK
Saving 256 bits of creditable seed for next boot
Starting network: [ 26.530674][ T96] ip (96) used greatest stack
depth: 26048 bytes left
[ 27.018425][ T97] ip (97) used greatest stack depth: 24256 bytes left
Waiting for interface eth0 to appear..... timeout!
run-parts: /etc/network/if-pre-up.d/wait_iface: exit status 1
FAIL
[ 33.902403][ C0] hrtimer: interrupt took 3450588 ns
Found console hvc0
Linux version 6.16.0-02450-g1c11a8599f68
(chle...@po20335.idsi0.si.c-s.fr) (powerpc64-linux-gcc (GCC) 8.5.0, GNU
ld (GNU Binutils) 2.36.1) #1459 SMP Mon Aug 4 12:49:11 CEST 2025
Network interface test failed
TPM selftest failed
File system test skipped
Boot successful.
~ #
Christophe
