github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-07 05:55:44 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

usbnet: fix memory allocation in helpers

Browse Source 
commit e65af5403e 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: 877bd862f3 ("usbnet: introduce usbnet 3 command helpers")
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20220628093517.7469-1-oneukum@suse.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oliver Neukum 2022-06-28 11:35:17 +02:00 committed by Greg Kroah-Hartman
parent fae2a9fb1e
commit eb1757ca20
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/usb/usbnet.c
View File

@ -1969,7 +1969,7 @@ static int __usbnet_read_cmd(struct usbnet *dev, u8 cmd, u8 reqtype,
cmd, reqtype, value, index, size); cmd, reqtype, value, index, size);
if (size) { if (size) {
buf = kmalloc(size, GFP_KERNEL); buf = kmalloc(size, GFP_NOIO);
if (!buf) if (!buf)
goto out; goto out;
} }
@ -2001,7 +2001,7 @@ static int __usbnet_write_cmd(struct usbnet *dev, u8 cmd, u8 reqtype,
cmd, reqtype, value, index, size); cmd, reqtype, value, index, size);
if (data) { if (data) {
buf = kmemdup(data, size, GFP_KERNEL); buf = kmemdup(data, size, GFP_NOIO);
if (!buf) if (!buf)
goto out; goto out;
} else { } else {