Kernel panic when running run_buildroot.sh and run_debian.sh

[rukakokubo]

Hi,

I tried to build and run Salus using scripts/run_buildroot.sh following the README instructions, but I encountered a kernel panic when executing the provided run scripts.

• Host: Ubuntu 24.04.3 LTS
• Salus: https://github.com/rivosinc/salus/tree/main
• QEMU: https://github.com/qemu/qemu/tree/v10.0.0
• Linux: https://github.com/rivosinc/linux/tree/salus-integration-10312022
• Buildroot: https://github.com/rivosinc/buildroot/tree/salus-integration-2022.08.2

The same error also occurs with scripts/run_debian.sh.

Error output:
...
0-0-2-0 RISC-V IOMMU probe failure: MissingAmoHwadSupport
No IOMMU found!
...
[ 0.237295] Oops [#1]
...
[ 0.250490] SMP: stopping secondary CPUs
[ 0.251551] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]---

The kernel panic occurs very early, and neither the Buildroot nor the Debian images can boot. In addition, the IOMMU does not seem to function correctly.

Could you please confirm whether this is the expected behavior for the current branch, or if I am missing any additional patches or configuration steps?

Thank you!

[sws0507]

Hi,
I also get a kernel panic when running scripts/run_buildroot.sh, but it seems a little different from yours.My error seems to be caused by the unavailability of the nvme device.
Output:
[ 62.467409] nvme nvme0: I/O 0 QID 0 timeout, disable controller
[ 62.478797] nvme nvme0: Identify Controller failed (-4)
[ 62.480239] nvme nvme0: Removing after probe failure status: -5
[ 62.518204] /dev/root: Can't open blockdev
[ 62.519669] VFS: Cannot open root device "nvme0n1" or unknown-block(0,0): error -6
[ 62.521337] Please append a correct "root=" boot option; here are the available partitions:
[ 62.523802] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[ 62.525834] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.1.0-rc3-00039-gf0d29de9126c #3
[ 62.527816] Hardware name: riscv-virtio,qemu (DT)
[ 62.529116] Call Trace:
[ 62.530053] [] dump_backtrace+0x1c/0x24
[ 62.532117] [] show_stack+0x2c/0x38
[ 62.533375] [] dump_stack_lvl+0x3c/0x54
[ 62.534659] [] dump_stack+0x14/0x1c
[ 62.535856] [] panic+0x102/0x29e
[ 62.537052] [] mount_block_root+0x160/0x212
[ 62.538520] [] mount_root+0x1e8/0x218
[ 62.539702] [] prepare_namespace+0x142/0x184
[ 62.541195] [] kernel_init_freeable+0x23c/0x260
[ 62.542744] [] kernel_init+0x1e/0x10a
[ 62.543916] [] ret_from_exception+0x0/0xc
[ 62.545337] SMP: stopping secondary CPUs
[ 62.547241] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ]---

And I also encountered the same IOMMU error, not sure if it is related to the kernel panic. If you solved this problem, could you please share your solution? Thank you.