----- 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 > > -- > Crash-utility mailing list > Crash-utility@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/crash-utility > -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
