On 23/04/14 17:35, Masami Ichikawa wrote: > kmemleak reported a memory leak as below. > > unreferenced object 0xffff8800dab6d8d8 (size 96): > comm "swapper/0", pid 1, jiffies 4294877598 (age 38.483s) > hex dump (first 32 bytes): > 00 00 00 00 00 01 00 00 08 00 00 00 10 00 00 00 ................ > 07 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 ................ > backtrace: > [<ffffffff814e8f2e>] kmemleak_alloc+0x4e/0xb0 > [<ffffffff811a0600>] __kmalloc+0x280/0x320 > [<ffffffff81309b61>] soft_cursor+0x231/0x290 > [<ffffffff81309393>] bit_cursor+0x613/0x650 > [<ffffffff8130556b>] fbcon_cursor+0x13b/0x1c0 > [<ffffffff813755f8>] hide_cursor+0x28/0xa0 > [<ffffffff81376e98>] redraw_screen+0x168/0x240 > [<ffffffff81303891>] fbcon_prepare_logo+0x381/0x420 > [<ffffffff81303c7e>] fbcon_init+0x34e/0x590 > [<ffffffff81375828>] visual_init+0xb8/0x120 > [<ffffffff81377c93>] do_bind_con_driver+0x163/0x380 > [<ffffffff81378494>] do_take_over_console+0x114/0x1c0 > [<ffffffff81303f23>] do_fbcon_takeover+0x63/0xd0 > [<ffffffff813086dd>] fbcon_event_notify+0x68d/0x7e0 > [<ffffffff814ff7ac>] notifier_call_chain+0x4c/0x70 > [<ffffffff8108c85d>] __blocking_notifier_call_chain+0x4d/0x70 > > This memory leak cause is, fbcon_ops's cursor_src is allocated in > soft_cursor() but not released in con2fb_release_oldinfo(). > so, cursor_src is needed to be released when oldinfo is going to be > released. > > Signed-off-by: Masami Ichikawa <masami256@xxxxxxxxx> > --- > drivers/video/console/fbcon.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c > index f447734..57b1d44 100644 > --- a/drivers/video/console/fbcon.c > +++ b/drivers/video/console/fbcon.c > @@ -748,6 +748,7 @@ static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, > fbcon_del_cursor_timer(oldinfo); > kfree(ops->cursor_state.mask); > kfree(ops->cursor_data); > + kfree(ops->cursor_src); > kfree(ops->fontbuffer); > kfree(oldinfo->fbcon_par); > oldinfo->fbcon_par = NULL; > Thanks, queued for 3.16. Tomi
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