On Sat, 31 Aug 2013, Bruno Prémont wrote: > When picolcd is switched into bootloader mode (for FW flashing) make > sure not to try to dereference NULL-pointers of feature-devices during > unplug/unbind. > > This fixes following BUG: > BUG: unable to handle kernel NULL pointer dereference at 00000298 > IP: [<f811f56b>] picolcd_exit_framebuffer+0x1b/0x80 [hid_picolcd] > *pde = 00000000 > Oops: 0000 [#1] > Modules linked in: hid_picolcd syscopyarea sysfillrect sysimgblt fb_sys_fops > CPU: 0 PID: 15 Comm: khubd Not tainted 3.11.0-rc7-00002-g50d62d4 #2 > EIP: 0060:[<f811f56b>] EFLAGS: 00010292 CPU: 0 > EIP is at picolcd_exit_framebuffer+0x1b/0x80 [hid_picolcd] > Call Trace: > [<f811d1ab>] picolcd_remove+0xcb/0x120 [hid_picolcd] > [<c1469b09>] hid_device_remove+0x59/0xc0 > [<c13464ca>] __device_release_driver+0x5a/0xb0 > [<c134653f>] device_release_driver+0x1f/0x30 > [<c134603d>] bus_remove_device+0x9d/0xd0 > [<c13439a5>] device_del+0xd5/0x150 > [<c14696a4>] hid_destroy_device+0x24/0x60 > [<c1474cbb>] usbhid_disconnect+0x1b/0x40 > ... > > Signed-off-by: Bruno Prémont <bonbons@xxxxxxxxxxxxxxxxx> > Cc: stable@xxxxxxxxxx > --- > drivers/hid/hid-picolcd_cir.c | 3 ++- > drivers/hid/hid-picolcd_fb.c | 6 +++++- > 2 files changed, 7 insertions(+), 2 deletions(-) Applied, thanks Bruno. -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
