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linux-xiaomi-chiron/drivers/usb/usbip
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Anirudh Rayabharam 258c81b341 usbip: give back URBs for unsent unlink requests during cleanup 
In vhci_device_unlink_cleanup(), the URBs for unsent unlink requests are
not given back. This sometimes causes usb_kill_urb to wait indefinitely
for that urb to be given back. syzbot has reported a hung task issue [1]
for this.

To fix this, give back the urbs corresponding to unsent unlink requests
(unlink_tx list) similar to how urbs corresponding to unanswered unlink
requests (unlink_rx list) are given back.

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

Reported-by: syzbot+74d6ef051d3d2eacf428@syzkaller.appspotmail.com
Tested-by: syzbot+74d6ef051d3d2eacf428@syzkaller.appspotmail.com
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Anirudh Rayabharam <mail@anirudhrb.com>
Link: https://lore.kernel.org/r/20210820190122.16379-2-mail@anirudhrb.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-26 13:29:10 +02:00
..
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
stub.h usbip: Implement SG support to vhci-hcd and stub driver 2019-09-03 16:00:38 +02:00
stub_dev.c usbip: stub-dev synchronize sysfs code paths 2021-04-05 09:05:42 +02:00
stub_main.c usb: usbip: Use DEFINE_SPINLOCK() for spinlock 2021-01-07 14:34:24 +01:00
stub_rx.c usbip: Use fallthrough pseudo-keyword 2020-07-09 18:06:35 +02:00
stub_tx.c usbip: clean up an indentation issue 2019-10-04 14:09:42 +02:00
usbip_common.c usbip: Remove in_interrupt() check 2020-10-28 13:06:06 +01:00
usbip_common.h Linux 5.12-rc8 2021-04-20 10:13:58 +02:00
usbip_event.c usbip: synchronize event handler with sysfs code paths 2021-04-05 09:05:42 +02:00
vhci.h USB: usbip: Remove redundant license text 2017-11-07 15:45:01 +01:00
vhci_hcd.c usbip: give back URBs for unsent unlink requests during cleanup 2021-08-26 13:29:10 +02:00
vhci_rx.c kcov, usbip: collect coverage from vhci_rx_loop 2020-12-28 15:48:36 +01:00
vhci_sysfs.c usbip: add sysfs_lock to synchronize sysfs code paths 2021-04-05 09:05:42 +02:00
vhci_tx.c usbip: Fix free of unallocated memory in vhci tx 2019-10-28 17:51:06 +01:00
vudc.h USB: usbip: convert platform driver to use dev_groups 2019-08-06 09:40:47 +02:00
vudc_dev.c usbip: vudc synchronize sysfs code paths 2021-04-05 09:05:42 +02:00
vudc_main.c USB: usbip: convert platform driver to use dev_groups 2019-08-06 09:40:47 +02:00
vudc_rx.c usbip: fix vudc_rx: harden CMD_SUBMIT path to handle malicious input 2018-01-04 17:07:26 +01:00
vudc_sysfs.c usbip: vudc: fix missing unlock on error in usbip_sockfd_store() 2021-04-12 10:29:50 +02:00
vudc_transfer.c usbip: Use fallthrough pseudo-keyword 2020-07-09 18:06:35 +02:00
vudc_tx.c usbip: vudc_tx: fix v_send_ret_submit() vulnerability to null xfer buffer 2018-01-04 17:07:27 +01:00