diff options
| author | Pietro Borrello <borrello@diag.uniroma1.it> | 2023-02-12 22:00:00 +0300 |
|---|---|---|
| committer | Benjamin Tissoires <benjamin.tissoires@redhat.com> | 2023-02-15 20:18:48 +0300 |
| commit | 27d2a2fd844ec7da70d19fabb482304fd1e0595b (patch) | |
| tree | bea7e2485ec52fe993fa808bee0b664e1721b1d4 | |
| parent | 9fefb6201c4f8dd9f58c581b2a66e5cde2895ea2 (diff) | |
| download | linux-27d2a2fd844ec7da70d19fabb482304fd1e0595b.tar.xz | |
HID: bigben_worker() remove unneeded check on report_field
bigben_worker() checks report_field to be non-NULL.
The check has been added in commit
918aa1ef104d ("HID: bigbenff: prevent null pointer dereference")
to prevent a NULL pointer crash.
However, the true root cause was a missing check for output
reports, patched in commit
c7bf714f8755 ("HID: check empty report_list in bigben_probe()"),
where the type-confused report list_entry was overlapping with
a NULL pointer, which was then causing the crash.
Fixes: 918aa1ef104d ("HID: bigbenff: prevent null pointer dereference")
Signed-off-by: Pietro Borrello <borrello@diag.uniroma1.it>
Link: https://lore.kernel.org/r/20230125-hid-unregister-leds-v4-2-7860c5763c38@diag.uniroma1.it
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
| -rw-r--r-- | drivers/hid/hid-bigbenff.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hid/hid-bigbenff.c b/drivers/hid/hid-bigbenff.c index ed3d2d7bc1dd..b98c5f31c184 100644 --- a/drivers/hid/hid-bigbenff.c +++ b/drivers/hid/hid-bigbenff.c @@ -197,7 +197,7 @@ static void bigben_worker(struct work_struct *work) u32 len; unsigned long flags; - if (bigben->removed || !report_field) + if (bigben->removed) return; buf = hid_alloc_report_buf(bigben->report, GFP_KERNEL); |