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authorJ. Bruce Fields <bfields@redhat.com>2010-12-17 13:29:07 -0500
committerJ. Bruce Fields <bfields@redhat.com>2010-12-17 13:29:07 -0500
commitec66ee3797e5848356cf593c6ec7aabf30a00cf1 (patch)
tree7ed5c84cc914644ffa1cd1b6a2b45db53fc224e8 /arch/x86/kernel/hw_breakpoint.c
parent1205065764f2eda3216ebe213143f69891ee3460 (diff)
parentb0c3844d8af6b9f3f18f31e1b0502fbefa2166be (diff)
downloadop-kernel-dev-ec66ee3797e5848356cf593c6ec7aabf30a00cf1.zip
op-kernel-dev-ec66ee3797e5848356cf593c6ec7aabf30a00cf1.tar.gz
Merge commit 'v2.6.37-rc6' into for-2.6.38
Diffstat (limited to 'arch/x86/kernel/hw_breakpoint.c')
-rw-r--r--arch/x86/kernel/hw_breakpoint.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c
index ff15c9d..42c5942 100644
--- a/arch/x86/kernel/hw_breakpoint.c
+++ b/arch/x86/kernel/hw_breakpoint.c
@@ -433,6 +433,10 @@ static int __kprobes hw_breakpoint_handler(struct die_args *args)
dr6_p = (unsigned long *)ERR_PTR(args->err);
dr6 = *dr6_p;
+ /* If it's a single step, TRAP bits are random */
+ if (dr6 & DR_STEP)
+ return NOTIFY_DONE;
+
/* Do an early return if no trap bits are set in DR6 */
if ((dr6 & DR_TRAP_BITS) == 0)
return NOTIFY_DONE;
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