[next] Kernel panic - not syncing: swiotlb_init_remap: nslabs = 0 too small

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[Please ignore this email if it is already reported]

Linux next-20220713 boot failed on arm, arm64, x86_64 and i386 [1].

Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
Reported-by: Naresh Kamboju <naresh.kamboju@xxxxxxxxxx>

metadata:
  git_ref: master
  git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
  git_sha: 4662b7adea50bb62e993a67f611f3be625d3df0d
  git_describe: next-20220713
  kernel_version: 5.19.0-rc6
  kernel-config: https://builds.tuxbuild.com/2BtFIR2DegCrbRCCTSZF93YVeiO/config
  build-url: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next/-/pipelines/586982028
  artifact-location: https://builds.tuxbuild.com/2BtFIR2DegCrbRCCTSZF93YVeiO
  vmlinux.xz: https://builds.tuxbuild.com/2BtFIR2DegCrbRCCTSZF93YVeiO/vmlinux.xz
  System.map: https://builds.tuxbuild.com/2BtFIR2DegCrbRCCTSZF93YVeiO/System.map
  toolchain: gcc-11

Here is the boot log output from arm64 juno-r2 device.

[    0.000000] Booting Linux on physical CPU 0x0000000100 [0x410fd033]
[    0.000000] Linux version 5.19.0-rc6-next-20220713
(tuxmake@tuxmake) (aarch64-linux-gnu-gcc (Debian 11.3.0-3) 11.3.0, GNU
ld (GNU Binutils for Debian) 2.38) #1 SMP PREEMPT @1657717522
[    0.000000] Machine model: ARM Juno development board (r2)
[    0.000000] earlycon: pl11 at MMIO 0x000000007ff80000 (options '')
[    0.000000] printk: bootconsole [pl11] enabled
[    0.000000] efi: UEFI not found.
[    0.000000] NUMA: No NUMA configuration found
[    0.000000] NUMA: Faking a node at [mem
0x0000000080000000-0x00000009ffffffff]
[    0.000000] NUMA: NODE_DATA [mem 0x9fefd1b40-0x9fefd3fff]
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000080000000-0x00000000ffffffff]
[    0.000000]   DMA32    empty
[    0.000000]   Normal   [mem 0x0000000100000000-0x00000009ffffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000080000000-0x00000000feffffff]
[    0.000000]   node   0: [mem 0x0000000880000000-0x00000009ffffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x00000009ffffffff]
[    0.000000] On node 0, zone Normal: 4096 pages in unavailable ranges
[    0.000000] cma: Reserved 32 MiB at 0x00000000fd000000
[    0.000000] psci: probing for conduit method from DT.
[    0.000000] psci: PSCIv1.1 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 v1.0
[    0.000000] percpu: Embedded 30 pages/cpu s82856 r8192 d31832 u122880
[    0.000000] Detected VIPT I-cache on CPU0
[    0.000000] CPU features: detected: ARM erratum 843419
[    0.000000] CPU features: detected: ARM erratum 845719
[    0.000000] Fallback order for Node 0: 0
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 2060288
[    0.000000] Policy zone: Normal
[    0.000000] Kernel command line: console=ttyAMA0,115200n8
root=/dev/nfs rw
nfsroot=10.66.16.120:/var/lib/lava/dispatcher/tmp/5283518/extract-nfsrootfs-ulkeoqdy,tcp,hard,vers=3,wsize=65536
earlycon=pl011,0x7ff80000 console_msg_format=syslog earlycon
default_hugepagesz=2M hugepages=256
sky2.mac_address=0x00,0x02,0xF7,0x00,0x68,0x51 ip=dhcp
<6>[    0.000000] Dentry cache hash table entries: 1048576 (order: 11,
8388608 bytes, linear)
<6>[    0.000000] Inode-cache hash table entries: 524288 (order: 10,
4194304 bytes, linear)
<6>[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
<0>[    0.000000] Kernel panic - not syncing: swiotlb_init_remap:
nslabs = 0 too small
<4>[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted
5.19.0-rc6-next-20220713 #1
<4>[    0.000000] Hardware name: ARM Juno development board (r2) (DT)
<4>[    0.000000] Call trace:
<4>[    0.000000]  dump_backtrace+0xe8/0x130
<4>[    0.000000]  show_stack+0x24/0x60
<4>[    0.000000]  dump_stack_lvl+0x8c/0xb8
<4>[    0.000000]  dump_stack+0x18/0x34
<4>[    0.000000]  panic+0x188/0x38c
<4>[    0.000000]  swiotlb_init_remap+0x50/0x54
<4>[    0.000000]  swiotlb_init+0x20/0x2c
<4>[    0.000000]  mem_init+0x38/0x48
<4>[    0.000000]  start_kernel+0x448/0x738
<4>[    0.000000]  __primary_switched+0xb8/0xc0
<0>[    0.000000] ---[ end Kernel panic - not syncing:
swiotlb_init_remap: nslabs = 0 too small ]---

Full test log link,
[1] https://lkft.validation.linaro.org/scheduler/job/5283518#L582

Best regards
Naresh Kamboju


--
Linaro LKFT
https://lkft.linaro.org



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