Re: crash does not work with last fedora kernels?

[Alexey Makhalov <amakhalov@xxxxxxxxxx>]

Hi David,
Can you share vmcore and kernel images? Or provide an intructions how to recreate this core?
I would be nice if you perform set of testing with your cores!
Thanks,
--Alexey

On 7/30/21, 7:44 AM, "crash-utility-bounces@xxxxxxxxxx on behalf of David Wysochanski" <crash-utility-bounces@xxxxxxxxxx on behalf of dwysocha@xxxxxxxxxx> wrote:

    On Thu, Jul 29, 2021 at 9:57 PM lijiang <lijiang@xxxxxxxxxx> wrote:
    >
    > >
    > > Hi, David
    > > Thank you for the attention.
    > > Currently, Fedora kernel has been forced to generate the DWARF4 debuginfo via the
    > > CONFIG_DEBUG_INFO_DWARF4 kernel option, see jforbes' comment:
    > > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsrc.fedoraproject.org%2Frpms%2Fkernel%2Fpull-request%2F48&amp;data=04%7C01%7Camakhalov%40vmware.com%7Ceadd7163e75c4cd9858808d95368790e%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C0%7C0%7C637632530448673576%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=Mwn4GKA5QMYpCcRpeKq26xhEJuOHDglXoHZk2uFa5DE%3D&amp;reserved=0
    > >
    > > Once crash gdb is upgraded, the DWARF5 could be enabled again in Fedora kernel.
    > >
    > > BTW: that is a temporary branch, still under tests and it has not been announced yet.
    > >
    >
    > > Lianbo,
    >
    > > Please STOP replying to the digest, but reply properly on the
    > > appropriate email thread.
    > > I've been involved in a lot of open source projects over the past 15 years,
    > > and you're the only one I've ever seen that replies to a digest, not the
    > > appropriate email thread.
    >
    > Good suggestions, David.
    >
    > I remember that you reminded me about this issue before this time. But recently my email system switched to Gmail, and made a mistake again. I'm trying to get used to the Gmail
    > system.
    >
    > But anyway, I hope that my last reply answered your questions.
    >

    Yes, thank you.  But did you see my feedback about some of the error
    output, when I tested your branch?
    Do you have a list of existing issues?
    I can fairly easily test your experimental branch on a series of
    vmcores, if that helps.

    Here's the feedback, cut/pasted from the other email thread:

    I'm seeing a lot of "invalid input" displayed like the below when
    using the 'bt' command.  Is this a known issue?

    bt: invalid input: "jne"
    bt: invalid input: "mov"
    bt: invalid input: "movl"
    bt: invalid input: "jne"
    bt: invalid input: "jne"
    bt: invalid input: "jne"
    bt: invalid input: "rep"
    bt: invalid input: "je"
    bt: invalid input: "je"
    bt: invalid input: "je"
    bt: invalid input: "call"
    bt: invalid input: "call"
    bt: invalid input: "jne"
    bt: invalid input: "call"
    bt: invalid input: "call"
    bt: invalid input: "movl"
    bt: invalid input: "mov"
    bt: invalid input: "jne"
    bt: invalid input: "mov"
    bt: invalid input: "je"
    bt: invalid input: "call"

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