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| author |   Peilin Ye <peilin.ye@bytedance.com> | 2022-09-22 21:25:51 -0700 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2022-09-26 11:23:22 -0700 |
| commit | a43206156263fbaf1f2b7f96257441f331e91bb7 (patch) | |
| tree | a511ad087e03a07f34980921185d2eae6298c8da /net/sched | |
| parent | Revert "net: mvpp2: debugfs: fix memory leak when using debugfs_lookup()" (diff) | |
| download | linux-dev-a43206156263fbaf1f2b7f96257441f331e91bb7.tar.xz linux-dev-a43206156263fbaf1f2b7f96257441f331e91bb7.zip | |
usbnet: Fix memory leak in usbnet_disconnect()
Currently usbnet_disconnect() unanchors and frees all deferred URBs
using usb_scuttle_anchored_urbs(), which does not free urb->context,
causing a memory leak as reported by syzbot.
Use a usb_get_from_anchor() while loop instead, similar to what we did
in commit 19cfe912c37b ("Bluetooth: btusb: Fix memory leak in
play_deferred"). Also free urb->sg.
Reported-and-tested-by: syzbot+dcd3e13cf4472f2e0ba1@syzkaller.appspotmail.com
Fixes: 69ee472f2706 ("usbnet & cdc-ether: Autosuspend for online devices")
Fixes: 638c5115a794 ("USBNET: support DMA SG")
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
Link: https://lore.kernel.org/r/20220923042551.2745-1-yepeilin.cs@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/sched')
0 files changed, 0 insertions, 0 deletions