Messages in this thread | | | Date | Thu, 24 Apr 2014 09:18:25 +0200 | Subject | Re: [PATCH 08/28] nios2: MMU Fault handling | From | Geert Uytterhoeven <> |
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On Tue, Apr 22, 2014 at 4:30 PM, Ezequiel Garcia <ezequiel.garcia@free-electrons.com> wrote: > On Apr 18, Ley Foon Tan wrote: >> + >> +bad_area_nosemaphore: >> + /* User mode accesses just cause a SIGSEGV */ >> + if (user_mode(regs)) { > > I found that it's useful to add some printing here, just as ARM > does. I carry this patch on my kernel: > > + printk(KERN_INFO "%s: unhandled page fault (%d) at 0x%08lx, cause %ld\n", > + current->comm, SIGSEGV, address, cause); > + show_regs(regs); > > Do you think we could do something like it? Maybe with a compile time option?
Can this easily be triggered from userspace? If yes, please use pr_info_ratelimited().
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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