Function kzalloc() may return a NULL pointer, it should be checked against NULL before used. This bug is found by a static analysis tool developed by RUC_SoftSec, supported by China.X.Orion.
Signed-off-by: RUC_SoftSec <rucsoft...@gmail.com> --- drivers/tty/vt/vt.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 9a8e8c5..fcba3ce 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -2887,12 +2887,14 @@ static int __init con_init(void) for (currcons = 0; currcons < MIN_NR_CONSOLES; currcons++) { vc_cons[currcons].d = vc = kzalloc(sizeof(struct vc_data), GFP_NOWAIT); - INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK); - tty_port_init(&vc->port); - visual_init(vc, currcons, 1); - vc->vc_screenbuf = kzalloc(vc->vc_screenbuf_size, GFP_NOWAIT); - vc_init(vc, vc->vc_rows, vc->vc_cols, - currcons || !vc->vc_sw->con_save_screen); + if (vc) { + INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK); + tty_port_init(&vc->port); + visual_init(vc, currcons, 1); + vc->vc_screenbuf = kzalloc(vc->vc_screenbuf_size, GFP_NOWAIT); + vc_init(vc, vc->vc_rows, vc->vc_cols, + currcons || !vc->vc_sw->con_save_screen); + } } currcons = fg_console = 0; master_display_fg = vc = vc_cons[currcons].d; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/