From: <gregkh@linuxfoundation.org>
To: anton@samba.org, gregkh@linuxfoundation.org, mpe@ellerman.id.au
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "powerpc/perf: Cap 64bit userspace backtraces to PERF_MAX_STACK_DEPTH" has been added to the 3.19-stable tree
Date: Sat, 02 May 2015 18:55:42 +0200 [thread overview]
Message-ID: <14305857426735@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
powerpc/perf: Cap 64bit userspace backtraces to PERF_MAX_STACK_DEPTH
to the 3.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-perf-cap-64bit-userspace-backtraces-to-perf_max_stack_depth.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 9a5cbce421a283e6aea3c4007f141735bf9da8c3 Mon Sep 17 00:00:00 2001
From: Anton Blanchard <anton@samba.org>
Date: Tue, 14 Apr 2015 07:51:03 +1000
Subject: powerpc/perf: Cap 64bit userspace backtraces to PERF_MAX_STACK_DEPTH
From: Anton Blanchard <anton@samba.org>
commit 9a5cbce421a283e6aea3c4007f141735bf9da8c3 upstream.
We cap 32bit userspace backtraces to PERF_MAX_STACK_DEPTH
(currently 127), but we forgot to do the same for 64bit backtraces.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/perf/callchain.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/perf/callchain.c
+++ b/arch/powerpc/perf/callchain.c
@@ -243,7 +243,7 @@ static void perf_callchain_user_64(struc
sp = regs->gpr[1];
perf_callchain_store(entry, next_ip);
- for (;;) {
+ while (entry->nr < PERF_MAX_STACK_DEPTH) {
fp = (unsigned long __user *) sp;
if (!valid_user_sp(sp, 1) || read_user_stack_64(fp, &next_sp))
return;
Patches currently in stable-queue which might be from anton@samba.org are
queue-3.19/powerpc-perf-cap-64bit-userspace-backtraces-to-perf_max_stack_depth.patch
queue-3.19/powerpc-jump_label-include-linux-jump_label.h-to-get-have_jump_label-define.patch
queue-3.19/perf-symbols-define-stt_gnu_ifunc-for-glibc-2.9-and-older.patch
reply other threads:[~2015-05-02 16:56 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=14305857426735@kroah.com \
--to=gregkh@linuxfoundation.org \
--cc=anton@samba.org \
--cc=mpe@ellerman.id.au \
--cc=stable-commits@vger.kernel.org \
--cc=stable@vger.kernel.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.