From: Oliver Neukum <oneukum@xxxxxxxx>
commit e65af5403e462ccd7dff6a045a886c64da598c2e upstream.
usbnet provides some helper functions that are also used in
the context of reset() operations. During a reset the other
drivers on a device are unable to operate. As that can be block
drivers, a driver for another interface cannot use paging
in its memory allocations without risking a deadlock.
Use GFP_NOIO in the helpers.
Fixes: 877bd862f32b8 ("usbnet: introduce usbnet 3 command helpers")
Signed-off-by: Oliver Neukum <oneukum@xxxxxxxx>
Link: https://lore.kernel.org/r/20220628093517.7469-1-oneukum@xxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/usb/usbnet.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -1987,7 +1987,7 @@ static int __usbnet_read_cmd(struct usbn
cmd, reqtype, value, index, size);
if (size) {
- buf = kmalloc(size, GFP_KERNEL);
+ buf = kmalloc(size, GFP_NOIO);
if (!buf)
goto out;
}
@@ -2019,7 +2019,7 @@ static int __usbnet_write_cmd(struct usb
cmd, reqtype, value, index, size);
if (data) {
- buf = kmemdup(data, size, GFP_KERNEL);
+ buf = kmemdup(data, size, GFP_NOIO);
if (!buf)
goto out;
} else {
