Messages in this thread | | | Subject | Re: [PATCH] updated preempt-kernel | From | Robert Love <> | Date | 21 Oct 2001 14:16:18 -0400 |
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On Sun, 2001-10-21 at 11:24, Andrew Morton wrote: > This one has been reported before.
Colin, can you try Andrew's patch and report back? This problem has been reported before -- its a tty bug that preempt (and SMP I wager) just aggravate. I have a patch that I know fixes it, but Andrew's is _much_ simpler. I will send you that if this fails. Please let me know.
> --- linux-2.4.12-ac3/drivers/char/console.c Mon Oct 15 16:04:23 2001 > +++ ac/drivers/char/console.c Sun Oct 21 08:19:42 2001 > @@ -2387,9 +2387,15 @@ static void con_flush_chars(struct tty_s > return; > > pm_access(pm_con); > - acquire_console_sem(); > - set_cursor(vt->vc_num); > - release_console_sem(); > + if (vt) { > + /* > + * If we raced with con_close(), `vt' may be null. > + * Hence this bandaid. - akpm > + */ > + acquire_console_sem(); > + set_cursor(vt->vc_num); > + release_console_sem(); > + } > } > > /*
Robert Love
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