From: Anton Blanchard <anton@samba.org>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org
Subject: [PATCH] powerpc: Add plain English description for alignment exception oopses
Date: Thu, 2 Jul 2015 14:56:20 +1000 [thread overview]
Message-ID: <1435812980-16360-1-git-send-email-anton@samba.org> (raw)
If we take an alignment exception which we cannot fix, the oops
currently prints:
Unable to handle kernel paging request for unknown fault
Lets print something more useful:
Unable to handle kernel paging request for unaligned access at address 0xc0000000f77bba8f
Signed-off-by: Anton Blanchard <anton@samba.org>
---
arch/powerpc/mm/fault.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index b396868..661ba0a 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -528,6 +528,10 @@ void bad_page_fault(struct pt_regs *regs, unsigned long address, int sig)
printk(KERN_ALERT "Unable to handle kernel paging request for "
"instruction fetch\n");
break;
+ case 0x600:
+ printk(KERN_ALERT "Unable to handle kernel paging request for "
+ "unaligned access at address 0x%08lx\n", regs->dar);
+ break;
default:
printk(KERN_ALERT "Unable to handle kernel paging request for "
"unknown fault\n");
--
2.1.4
next reply other threads:[~2015-07-02 4:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-02 4:56 Anton Blanchard [this message]
2015-07-07 10:38 ` powerpc: Add plain English description for alignment exception oopses Michael Ellerman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1435812980-16360-1-git-send-email-anton@samba.org \
--to=anton@samba.org \
--cc=benh@kernel.crashing.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mpe@ellerman.id.au \
--cc=paulus@samba.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).