linux-kernel - [PATCH v3 0/2] Fix syzkaller bug: hung task in hub_port

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Date:   Fri, 13 Aug 2021 23:55:06 +0530
From:   Anirudh Rayabharam <mail@...rudhrb.com>
To:     valentina.manea.m@...il.com, shuah@...nel.org,
        gregkh@...uxfoundation.org
Cc:     Anirudh Rayabharam <mail@...rudhrb.com>, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org
Subject: [PATCH v3 0/2] Fix syzkaller bug: hung task in hub_port_init

This series fixes the hung task bug in hub_port_init reported by
syzkaller at:

https://syzkaller.appspot.com/bug?id=08f12df95ae7da69814e64eb5515d5a85ed06b76

The first patch in the series fixes the issue and the second patch does
some refactoring to avoid duplicate code.

Changes in v3:
- Split the patch into two patches
- Remove the convenience wrappers as suggested by Shuah
- Remove the WARN as suggested by Greg

Changes in v2:
Use WARN_ON() instead of BUG() when unlink_list is neither unlink_tx nor
unlink_rx.
v2: https://lore.kernel.org/lkml/20210806181335.2078-1-mail@anirudhrb.com/

v1: https://lore.kernel.org/lkml/20210806164015.25263-1-mail@anirudhrb.com/

Anirudh Rayabharam (2):
  usbip: give back URBs for unsent unlink requests during cleanup
  usbip: eliminate duplicate code in vhci_device_unlink_cleanup

 drivers/usb/usbip/vhci_hcd.c | 31 ++++++++++++++++++-------------
 1 file changed, 18 insertions(+), 13 deletions(-)

-- 
2.26.2