+ s390-potential-buffer-overflow.patch added to -mm tree

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The patch titled
     s390: potential buffer overflow
has been added to the -mm tree.  Its filename is
     s390-potential-buffer-overflow.patch

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*** Remember to use Documentation/SubmitChecklist when testing your code ***

See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this

The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/

------------------------------------------------------
Subject: s390: potential buffer overflow
From: Dan Carpenter <error27@xxxxxxxxx>

"len" hasn't been properly range checked so we shouldn't use it as an
array offset.  This can only be written to by root but it would still be
annoying to accidentally write more than 3 characters and corrupt your
memory.

Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
"Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Hans-Joachim Picht <hans@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 drivers/s390/char/sclp_async.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN drivers/s390/char/sclp_async.c~s390-potential-buffer-overflow drivers/s390/char/sclp_async.c
--- a/drivers/s390/char/sclp_async.c~s390-potential-buffer-overflow
+++ a/drivers/s390/char/sclp_async.c
@@ -85,7 +85,7 @@ static int proc_handler_callhome(struct 
 		rc = copy_from_user(buf, buffer, sizeof(buf));
 		if (rc != 0)
 			return -EFAULT;
-		buf[len - 1] = '\0';
+		buf[sizeof(buf) - 1] = '\0';
 		if (strict_strtoul(buf, 0, &val) != 0)
 			return -EINVAL;
 		if (val != 0 && val != 1)
_

Patches currently in -mm which might be from error27@xxxxxxxxx are

linux-next.patch
power_meter-acpi_device_class-power_meter_resource-too-long.patch
dpt_i20-several-use-after-free-issues.patch
sbshc-acpi_device_class-smbus_host_controller-too-long.patch
acpi_pad-processor_aggregator-name-too-long.patch
drivers-gpu-drm-via-via_videoc-fix-off-by-one-issue.patch
drivers-gpu-drm-radeon-radeon_atombiosc-range-check-issues.patch
drivers-gpu-drm-drm_sysfsc-sysfs-files-error-handling.patch
drivers-gpu-drm-drm_memoryc-fix-check-for-end-of-loop.patch
drivers-media-video-au0828-au0828-videoc-off-by-one-bug.patch
drivers-media-video-zc0301-zc0301_corec-improve-error-handling.patch
drivers-media-video-et61x251-et61x251_corec-improve-error-handling.patch
drivers-media-video-sn9c102-sn9c102_corec-improve-error-handling.patch
drivers-mfd-pcf50633-corec-off-by-one-issue.patch
backlight-backlight_device_register-return-err_ptr.patch
s390-potential-buffer-overflow.patch
scsi-remove-superfluous-null-pointer-check-from-scsi_kill_request.patch
iscsi-change-to.patch
drivers-staging-otus-hal-hpanic-using-the-wrong-variable.patch
drivers-staging-comedi-drivers-dt2801c-off-by-one-issue.patch
musb-potential-use-after-free.patch
usb-oxu210hp-release-spinlock-on-error-path.patch
9p-return-on-mutex_lock_interruptible.patch
9p-saving-negative-to-unsigned-char.patch
dynamic_debug-small-cleanup-in-ddebug_proc_write.patch
sis-strcpy-=-strlcpy.patch
proc-cleanup-remove-unused-assignments.patch

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