Kernel Panic Issue on Witherspoon

[Andrew Jeffery]

On Thu, 2018-01-18 at 18:26 +0000, Balaji.B.Rao at dell.com wrote:
> Folks,
>  
> I’m seeing kernel panic on witherspoon when I do a build locally. I traced the signature to the issue shown below,
>  
> https://github.com/openbmc/openbmc/issues/2474
>  
> But I don’t see any recommendation to get over it. Any help / pointer is deeply appreciated. The kernel panic that I see is as follows,
>  
> [    5.420000] fe00            2067 ubiblock0_1
> [    5.420000]  (driver?)
> [    5.420000] No filesystem could mount root, tried:
> [    5.420000]  squashfs
> [    5.420000]
> [    5.420000] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(254,0)
> [    5.420000] CPU: 0 PID: 1 Comm: swapper Not tainted 4.10.17-72b52ebab574eaf0bcd2256ae16a25976a37c407 #1
> [    5.420000] Hardware name: ASpeed SoC
> [    5.420000] [<80010080>] (unwind_backtrace) from [<8000d934>] (show_stack+0x20/0x24)
> [    5.420000] [<8000d934>] (show_stack) from [<801dbf2c>] (dump_stack+0x20/0x28)
> [    5.420000] [<801dbf2c>] (dump_stack) from [<800a4a40>] (panic+0xc8/0x264)
> [    5.420000] [<800a4a40>] (panic) from [<8059056c>] (mount_block_root+0x288/0x300)
> [    5.420000] [<8059056c>] (mount_block_root) from [<80590740>] (mount_root+0x60/0x7c)
> [    5.420000] [<80590740>] (mount_root) from [<805908c8>] (prepare_namespace+0x16c/0x1d0)
> [    5.420000] [<805908c8>] (prepare_namespace) from [<805900b0>] (kernel_init_freeable+0x184/0x1cc)
> [    5.420000] [<805900b0>] (kernel_init_freeable) from [<803fe480>] (kernel_init+0x18/0x104)
> [    5.420000] [<803fe480>] (kernel_init) from [<8000a5e8>] (ret_from_fork+0x14/0x2c)
>  

Your best bet is to file an issue with the full boot log in the
description. We'll judge whether it's a duplicate with 2474 once you've
done so. If it is a duplicate of 2474, it's because the u-boot
environment is pointing to a UBI volume name that doesn't exist. I
think there was a fix in the pipeline.

How you hit this might also depend on how you're building the image and
flashing the system, so be sure to include that in the issue you file.

Cheers,

Andrew
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