diff options
| author | Sumeet Pawnikar <sumeet4linux@gmail.com> | 2025-12-06 00:32:16 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-17 16:35:31 +0100 |
| commit | d33cc39e9f7ef457b0ac4c24be0244ddde4cefca (patch) | |
| tree | 49d1a89726f790d9e2fa9493c9a4da033d5abe22 /include/net/aligned_data.h | |
| parent | cbbf6c1fe62b919bcf43f8d0a45a64696158a941 (diff) | |
powercap: fix race condition in register_control_type()
[ Upstream commit 7bda1910c4bccd4b8d4726620bb3d6bbfb62286e ]
The device becomes visible to userspace via device_register()
even before it fully initialized by idr_init(). If userspace
or another thread tries to register a zone immediately after
device_register(), the control_type_valid() will fail because
the control_type is not yet in the list. The IDR is not yet
initialized, so this race condition causes zone registration
failure.
Move idr_init() and list addition before device_register()
fix the race condition.
Signed-off-by: Sumeet Pawnikar <sumeet4linux@gmail.com>
[ rjw: Subject adjustment, empty line added ]
Link: https://patch.msgid.link/20251205190216.5032-1-sumeet4linux@gmail.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions