4.2.8-ckt8 -stable review patch. If anyone has any objections, please let me know.
---8<------------------------------------------------------------
From: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxxxxx>
commit 21b81716c6bff24cda52dc75588455f879ddbfe9 upstream.
Commit d63c7dd5bcb9 ("ipr: Fix out-of-bounds null overwrite") removed
the end of line handling when storing the update_fw sysfs attribute.
This changed the userpace API because it started refusing writes
terminated by a line feed, which broke the update tools we already have.
This patch re-adds that handling, so both a write terminated by a line
feed or not can make it through with the update.
Fixes: d63c7dd5bcb9 ("ipr: Fix out-of-bounds null overwrite")
Signed-off-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxxxxx>
Cc: Insu Yun <wuninsu@xxxxxxxxx>
Acked-by: Brian King <brking@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Cc: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
drivers/scsi/ipr.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index d5214a1..57f6031 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -4002,6 +4002,7 @@ static ssize_t ipr_store_update_fw(struct device *dev,
struct ipr_sglist *sglist;
char fname[100];
char *src;
+ char *endline;
int result, dnld_size;
if (!capable(CAP_SYS_ADMIN))
@@ -4009,6 +4010,10 @@ static ssize_t ipr_store_update_fw(struct device *dev,
snprintf(fname, sizeof(fname), "%s", buf);
+ endline = strchr(fname, '\n');
+ if (endline)
+ *endline = '\0';
+
if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
return -EIO;
--
2.7.4
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