Re: Best way to debug an invalid opcode

On Thu, 2020-03-19 at 10:22 +0100, Karaoui mohamed lamine wrote:

Hi list,

I am currently encountering a kernel oops that indicate an "invalid opcode: 0000 [#1] SMP"

I am working on this project https://github.com/GiantVM/Linux-DSM

The full log of the bug can be found here: https://github.com/GiantVM/Linux-DSM/pull/3 (at the end)

Here is a snippet of the log: [ 107.980285] ------------[ cut here ]------------ [ 107.980995] kernel BUG at arch/x86/kvm/dsm-util.c:214!

Why don't you look at the code? https://github.com/GiantVM/Linux-DSM/blob/master/arch/x86/kvm/dsm-util.c#L21... This bug is in the DSM code itself. You'll have to figure out why xbzrle_decode_buffer is returning a negative value. -- All Rights Reversed.