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| author | Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> | 2016-02-25 13:54:20 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-12 09:12:47 -0700 |
| commit | c2dcb436231a5b1ce92c15cc2d04ba3270745909 (patch) | |
| tree | 1df7a63559971533187f5c16ef27819d6b1334ef | |
| parent | 8301f0a22259b1fba75559669413f492ff57e640 (diff) | |
| download | lwn-c2dcb436231a5b1ce92c15cc2d04ba3270745909.tar.gz lwn-c2dcb436231a5b1ce92c15cc2d04ba3270745909.zip | |
ipr: Fix regression when loading firmware
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@linux.vnet.ibm.com>
Cc: Insu Yun <wuninsu@gmail.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/scsi/ipr.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 5eed1b2f692f..2b7bc7df1edf 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -3946,6 +3946,7 @@ 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)) @@ -3953,6 +3954,10 @@ 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; |