kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-16 22:39:48 +00:00
Code Issues Releases Packages Activity
linux/drivers/input/misc/uinput.c
Dmitry Torokhov 72d4736253 Input: uinput - fix crash when using ABS events 
Commit b6d30968d8 (Input: uinput - switch to
using for_each_set_bit()) switched driver to use for_each_set_bit().
However during initial write of the uinput structure that contains min/max
data for all possible axes none of them are reflected in dev->absbit yet
and so we were skipping over all of them and were not allocating absinfo
memory which caused crash later when driver tried to sens EV_ABS events:

<1>[   15.064330] BUG: unable to handle kernel NULL pointer dereference at 0000000000000024
<1>[   15.064336] IP: [<ffffffff8163f142>] input_handle_event+0x232/0x4e0
<4>[   15.064343] PGD 0
<4>[   15.064345] Oops: 0000 [#1] SMP

Fixes: b6d30968d8
Cc: stable@vger.kernel.org
Reported-by: Stephen Chandler Paul <cpaul@redhat.com>
Tested-by: Stephen Chandler Paul <cpaul@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-09-21 09:32:41 -07:00

941 lines
21 KiB
Raw Blame History