diff options
| author | Marc Zyngier <[email protected]> | 2024-08-09 12:44:07 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2024-08-13 08:26:27 +0000 |
| commit | dcdb52d948f3a17ccd3fce757d9bd981d7c32039 (patch) | |
| tree | 065451d13228644842421418f15fd730686ccbc1 /rust/helpers/helpers.c | |
| parent | Merge tag 'thunderbolt-for-v6.11-rc3' of ssh://gitolite.kernel.org/pub/scm/li... (diff) | |
| download | kernel-dcdb52d948f3a17ccd3fce757d9bd981d7c32039.tar.gz kernel-dcdb52d948f3a17ccd3fce757d9bd981d7c32039.zip | |
usb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup()
If xhci_mem_init() fails, it calls into xhci_mem_cleanup() to mop
up the damage. If it fails early enough, before xhci->interrupters
is allocated but after xhci->max_interrupters has been set, which
happens in most (all?) cases, things get uglier, as xhci_mem_cleanup()
unconditionally derefences xhci->interrupters. With prejudice.
Gate the interrupt freeing loop with a check on xhci->interrupters
being non-NULL.
Found while debugging a DMA allocation issue that led the XHCI driver
on this exact path.
Fixes: c99b38c41234 ("xhci: add support to allocate several interrupters")
Cc: Mathias Nyman <[email protected]>
Cc: Wesley Cheng <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Cc: [email protected] # 6.8+
Signed-off-by: Mathias Nyman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'rust/helpers/helpers.c')
0 files changed, 0 insertions, 0 deletions