2007/6/27, Dave Young <[email protected]>:
Hi, If you press ctrl+alt+del several times as kernel booting (before user level bootin), the kernel will oops. I found the ps2_command is called more than once, then the ps2dev->serio maybe NULL pointer. 2.6.22-rc5 and 2.6.22-rc6 have same result. Signed-off-by: Dave Young <[email protected]> --- diff -upr linux/drivers/input/keyboard/atkbd.c linux.new/drivers/input/keyboard/atkbd.c --- linux/drivers/input/keyboard/atkbd.c 2007-06-27 10:38:37.000000000 +0000 +++ linux.new/drivers/input/keyboard/atkbd.c 2007-06-27 10:37:39.000000000 +0000 @@ -795,6 +795,11 @@ static int atkbd_activate(struct atkbd * static void atkbd_cleanup(struct serio *serio) { + static int flag; + + if(flag) + return; + flag = 1; struct atkbd *atkbd = serio_get_drvdata(serio); ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_BAT); } Regards dave
attached please find the oops screen image.
Attachment:
screen.jpg
Description: JPEG image
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- From: Dave Young <[email protected]>
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