usb: core: Add lock to usb_wakeup_notification()

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Add a spin lock to usb_wakeup notification to prevent a race condition
with dereferencing freed memory. This could be hit by the xHCI driver as
it calls this function from an IRQ and could race with the
hub_disconnect() function, which properly grabs this lock to protect the
state of the device.

Assisted-by: gkh_clanker_t1000
Signed-off-by: Griffin Kroah-Hartman <griffin@kroah.com>
Link: https://patch.msgid.link/20260713-usb_core_patches_1-v1-3-7721c2b33f53@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Griffin Kroah-Hartman 2026-07-13 17:43:53 +02:00 • committed by Greg Kroah-Hartman

parent c9a934ddee

commit e263e18a9e

1 changed files with 3 additions and 0 deletions

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drivers/usb/core/hub.c

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