diff options
| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2021-11-23 13:16:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-23 16:05:28 +0300 |
| commit | 6cca13de26eea6d32a98d96d916a048d16a12822 (patch) | |
| tree | 981a3f7352779cfc90b1230d7010a86ac221dc9a /drivers/virt | |
| parent | d4d2e5329ae9dfd6742c84d79f7d143d10410f1b (diff) | |
| download | linux-6cca13de26eea6d32a98d96d916a048d16a12822.tar.xz | |
usb: hub: Fix locking issues with address0_mutex
Fix the circular lock dependency and unbalanced unlock of addess0_mutex
introduced when fixing an address0_mutex enumeration retry race in commit
ae6dc22d2d1 ("usb: hub: Fix usb enumeration issue due to address0 race")
Make sure locking order between port_dev->status_lock and address0_mutex
is correct, and that address0_mutex is not unlocked in hub_port_connect
"done:" codepath which may be reached without locking address0_mutex
Fixes: 6ae6dc22d2d1 ("usb: hub: Fix usb enumeration issue due to address0 race")
Cc: <stable@vger.kernel.org>
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20211123101656.1113518-1-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/virt')
0 files changed, 0 insertions, 0 deletions