public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-11-01 01:03:52 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

xhci: fix memory leak regression when freeing xhci vdev devices depth first

Browse source 
Suspend-resume cycle test revealed a memory leak in 6.17-rc3

Turns out the slot_id race fix changes accidentally ends up calling
xhci_free_virt_device() with an incorrect vdev parameter.
The vdev variable was reused for temporary purposes right before calling
xhci_free_virt_device().

Fix this by passing the correct vdev parameter.

The slot_id race fix that caused this regression was targeted for stable,
so this needs to be applied there as well.

Fixes: 2eb0337615 ("usb: xhci: Fix slot_id resource race conflict")
Reported-by: David Wang <00107082@163.com>
Closes: https://lore.kernel.org/linux-usb/20250829181354.4450-1-00107082@163.com
Suggested-by: Michal Pecio <michal.pecio@gmail.com>
Suggested-by: David Wang <00107082@163.com>
Cc: stable@vger.kernel.org
Tested-by: David Wang <00107082@163.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20250902105306.877476-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman 2025-09-02 13:53:06 +03:00 • committed by Greg Kroah-Hartman
parent a5c98e8b13
commit edcbe06453
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/usb/host/xhci-mem.c
View file

@ -962,7 +962,7 @@ static void xhci_free_virt_devices_depth_first(struct xhci_hcd *xhci, int slot_i
out:
/* we are now at a leaf device */
xhci_debugfs_remove_slot(xhci, slot_id);
xhci_free_virt_device(xhci, vdev, slot_id);
xhci_free_virt_device(xhci, xhci->devs[slot_id], slot_id);
}
int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,