From: Dmitry Torokhov Date: Sat, 19 Sep 2015 18:22:57 +0000 (-0700) Subject: Input: uinput - fix crash when using ABS events X-Git-Tag: omap-for-v4.4/cleanup-pt1~14^2~6 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=72d4736253af74147b1fa68145b2f4c61d1f37e1;p=pandora-kernel.git Input: uinput - fix crash when using ABS events Commit b6d30968d86c45a7bb599eaca13ff048d3fa576c (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: [] input_handle_event+0x232/0x4e0 <4>[ 15.064343] PGD 0 <4>[ 15.064345] Oops: 0000 [#1] SMP Fixes: b6d30968d86c45a7bb599eaca13ff048d3fa576c Cc: stable@vger.kernel.org Reported-by: Stephen Chandler Paul Tested-by: Stephen Chandler Paul Signed-off-by: Dmitry Torokhov --- Reading git-diff-tree failed