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authorOleg Nesterov <oleg@redhat.com>2012-06-15 17:43:44 +0200
committerIngo Molnar <mingo@kernel.org>2012-06-16 09:10:46 +0200
commitfc36f59565861af2e897225bc3782479a26c5d5a (patch)
tree3f156c0caa96a229e50017a600334d4ceeb3b3ae /kernel/events
parentd436615e60c386095dac4a9bf72b08868d2a7564 (diff)
uprobes: Copy_insn() should not return -ENOMEM if __copy_insn() fails
copy_insn() returns -ENOMEM if the first __copy_insn() fails, it should return the correct error code. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anton Arapov <anton@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20120615154344.GA9601@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events')
-rw-r--r--kernel/events/uprobes.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 08ef566da763..2db1d94d7dfc 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -641,10 +641,10 @@ static int copy_insn(struct uprobe *uprobe, struct file *filp)
/* Instruction at the page-boundary; copy bytes in second page */
if (nbytes < bytes) {
- if (__copy_insn(mapping, filp, uprobe->arch.insn + nbytes,
- bytes - nbytes, uprobe->offset + nbytes))
- return -ENOMEM;
-
+ int err = __copy_insn(mapping, filp, uprobe->arch.insn + nbytes,
+ bytes - nbytes, uprobe->offset + nbytes);
+ if (err)
+ return err;
bytes = nbytes;
}
return __copy_insn(mapping, filp, uprobe->arch.insn, bytes, uprobe->offset);