Glauber de Oliveira Costa wrote:
> When a page faults comes from a kernel space, the printed summary
> leaves us clueless about what kind of access was being tried (which
> is encoded in the error_code variable).
>
> Having it promply available may ease debugging in a bunch of
> situations.
>
> Signed-off-by: Glauber de Oliveira Costa <[email protected]>
>
>
>
> ------------------------------------------------------------------------
>
> diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c
> index 6ada723..e65522e 100644
> --- a/arch/x86_64/mm/fault.c
> +++ b/arch/x86_64/mm/fault.c
> @@ -539,7 +539,7 @@ no_context:
> printk(KERN_ALERT "Unable to handle kernel NULL pointer dereference");
> else
> printk(KERN_ALERT "Unable to handle kernel paging request");
> - printk(" at %016lx RIP: \n" KERN_ALERT,address);
> + printk(" at %016lx (error=0x%02lx) RIP: \n" KERN_ALERT, error_code, address);
> printk_address(regs->rip);
> dump_pagetable(address);
> tsk->thread.cr2 = address;
Umm, it's already there, right after the word "Oops".
Oops: 0002 [1] SMP
^^^^
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
