Re: [Crash-utility] kernel module parsing failure - mips
----- Original Message -----
Hi Dave,
With 7.1.7, crash is working for MIPS when all drivers are embedded
inside kernel.
When I make the driver loadable and panic the kernel, crash doesn't
locate some symbols correctly.
please wait... (gathering module symbol data)
crash: invalid size request: 0 type: "pgd page"
debugged further and find that PGD_ORDER provides incorrect number
due to which the PGD_SIZE macro results in 0.
Just for fun, I replaced PGD_ORDER with 0(I know its incorrect) and it
went ahead but couldn't run "mod" command successfully as it threw
following error
crash> mod
mod: cannot access vmalloc'd module memory
Any idea?
Clearly it's failing to translate any kernel virtual address that is
not unity-mapped. I have 3 sample 3.19-based MIPS vmcores on hand,
and crash-7.1.7 can translate both mapped user-space and vmalloc'd module
addresses. But I am completely unfamiliar with the particulars of the MIPS
architecture. MIPS support in the crash utility was written by, and its
maintenance is done by, Rabin Vincent. He is a member of this list, but
just in case he missed your post, I've cc'd this message to both of his
registered email addresses.
Dave
Thanks
Sagar
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