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From: tip-bot for Stuart Bennett <stuart@freedesktop.org>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com,
	rostedt@goodmis.org, pq@iki.fi, stuart@freedesktop.org,
	tglx@linutronix.de, mingo@elte.hu
Subject: [tip:tracing/urgent] tracing: x86, mmiotrace: fix range test
Date: Wed, 29 Apr 2009 11:04:27 GMT	[thread overview]
Message-ID: <tip-33015c85995716d03f6293346cf05a1908b0fb9a@git.kernel.org> (raw)
In-Reply-To: <1240946271-7083-2-git-send-email-stuart@freedesktop.org>

Commit-ID:  33015c85995716d03f6293346cf05a1908b0fb9a
Gitweb:     http://git.kernel.org/tip/33015c85995716d03f6293346cf05a1908b0fb9a
Author:     Stuart Bennett <stuart@freedesktop.org>
AuthorDate: Tue, 28 Apr 2009 20:17:48 +0100
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Wed, 29 Apr 2009 11:32:22 +0200

tracing: x86, mmiotrace: fix range test

Matching on (addr == (p->addr + p->len)) causes problems when mappings
are adjacent.

[ Impact: fix mmiotrace confusion on adjacent iomaps ]

Signed-off-by: Stuart Bennett <stuart@freedesktop.org>
Acked-by: Pekka Paalanen <pq@iki.fi>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <1240946271-7083-2-git-send-email-stuart@freedesktop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>


---
 arch/x86/mm/kmmio.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/mm/kmmio.c b/arch/x86/mm/kmmio.c
index 4f115e0..50dc802 100644
--- a/arch/x86/mm/kmmio.c
+++ b/arch/x86/mm/kmmio.c
@@ -87,7 +87,7 @@ static struct kmmio_probe *get_kmmio_probe(unsigned long addr)
 {
 	struct kmmio_probe *p;
 	list_for_each_entry_rcu(p, &kmmio_probes, list) {
-		if (addr >= p->addr && addr <= (p->addr + p->len))
+		if (addr >= p->addr && addr < (p->addr + p->len))
 			return p;
 	}
 	return NULL;

  parent reply	other threads:[~2009-04-29 11:05 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-28 19:17 [PATCH 0/4] mmiotrace: various fixes and cleaning Stuart Bennett
2009-04-28 19:17 ` [PATCH] x86 mmiotrace: fix range test Stuart Bennett
2009-04-28 19:17   ` [PATCH] x86 mmiotrace: code consistency/legibility improvement Stuart Bennett
2009-04-28 19:17     ` [PATCH] x86 mmiotrace: refactor clearing/restore of page presence Stuart Bennett
2009-04-28 19:17       ` [PATCH] x86 mmiotrace: only register for die notifier when tracer active Stuart Bennett
2009-04-29  9:39         ` Ingo Molnar
2009-04-29 11:05         ` [tip:tracing/core] tracing: x86, " tip-bot for Stuart Bennett
2009-04-29 11:04       ` [tip:tracing/core] tracing: x86, mmiotrace: refactor clearing/restore of page presence tip-bot for Stuart Bennett
2009-04-29 11:04     ` [tip:tracing/core] tracing: x86, mmiotrace: code consistency/legibility improvement tip-bot for Stuart Bennett
2009-04-29 11:04   ` tip-bot for Stuart Bennett [this message]
2009-04-29  9:36 ` [PATCH 0/4] mmiotrace: various fixes and cleaning Ingo Molnar

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