diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2012-06-15 19:43:44 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-06-16 11:10:46 +0400 |
| commit | fc36f59565861af2e897225bc3782479a26c5d5a (patch) | |
| tree | 3f156c0caa96a229e50017a600334d4ceeb3b3ae | |
| parent | d436615e60c386095dac4a9bf72b08868d2a7564 (diff) | |
| download | linux-fc36f59565861af2e897225bc3782479a26c5d5a.tar.xz | |
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>
| -rw-r--r-- | kernel/events/uprobes.c | 8 |
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); |