Re: 2.6.12-rc3-mm1

Andrew Morton
2005-04-30T11:26:48Z

Alexander Nyberg <alexn@dsv.su.se> wrote:
>
> > - We're still miles away from 2.6.12. Lots of patches here, plus my
> > collection of bugs-post-2.6.11 is vast. I'll start working through them
> > again after 2.6.12-rc4 is available to testers.
> >
>
> Something is bad with my init process, so with debug patch below I'm
> getting:
> do_page_fault: force_sig_info SIGSEV to 1, addr ffffe018, eip b7fe576a
> do_page_fault: force_sig_info SIGSEV to 1, addr ffffe018, eip b7fe576a
> do_page_fault: force_sig_info SIGSEV to 1, addr ffffe018, eip b7fe576a
> do_page_fault: force_sig_info SIGSEV to 1, addr ffffe018, eip b7fe576a
>
> continuing forever. 0xffffe018 is inside the vsyscall page so could be
> related but the eip should be there too in that case I think...
> You have any candidates? I've failed to find any.

Nope. The easiest way to identify this is to grab broken-out.tar.gz, the
series file and use quilt to do a bisection search. Ten compiles max.

If you're not interested in that, please share the .config.

> Index: mm/arch/i386/mm/fault.c
> ===================================================================
> --- mm.orig/arch/i386/mm/fault.c 2005-04-30 12:49:17.000000000 +0200
> +++ mm/arch/i386/mm/fault.c 2005-04-30 12:56:31.000000000 +0200
> @@ -391,6 +391,8 @@
> info.si_errno = 0;
> /* info.si_code has been set above */
> info.si_addr = (void __user *)address;
> + printk("%s: force_sig_info SIGSEV to %d, addr %lx, eip %lx\n",
> + __FUNCTION__, tsk->pid, address, regs->eip);
> force_sig_info(SIGSEGV, &info, tsk);
> return;
> }
>
>
> Also, this brought me to trying to find what has changed between the
> versions which appears a little tricky.

Well announce.txt tells you what was added and what was removed.

> Do you think it would be
> possible to set up your scripts that currently notify the author of a
> patch about the inclusion to CC something like mm-commits list.

Certainly could. I'll ask davem about getting a list set up.

> That way people can audit patches that have got in before the tarball is
> released, it is easy to see what has gone in and when.