diff options
| author | Xu Yang <[email protected]> | 2024-01-29 17:37:38 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2024-02-19 09:30:41 +0100 |
| commit | 1c9be13846c0b2abc2480602f8ef421360e1ad9e (patch) | |
| tree | bcc85d1dcfd8e4e4049ce2d96ef8d21d6a87f957 /lib/test_fortify/write_overflow-strncpy-src.c | |
| parent | 47625b018c6bc788bc10dd654c82696eb0a5ef11 (diff) | |
usb: roles: fix NULL pointer issue when put module's reference
In current design, usb role class driver will get usb_role_switch parent's
module reference after the user get usb_role_switch device and put the
reference after the user put the usb_role_switch device. However, the
parent device of usb_role_switch may be removed before the user put the
usb_role_switch. If so, then, NULL pointer issue will be met when the user
put the parent module's reference.
This will save the module pointer in structure of usb_role_switch. Then,
we don't need to find module by iterating long relations.
Fixes: 5c54fcac9a9d ("usb: roles: Take care of driver module reference counting")
cc: [email protected]
Signed-off-by: Xu Yang <[email protected]>
Acked-by: Heikki Krogerus <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'lib/test_fortify/write_overflow-strncpy-src.c')
0 files changed, 0 insertions, 0 deletions