Messages in this thread Patch in this message | | | Subject | Re: [OOPS][2.5.66bk3+] run_timer_softirq - IRQ Mishandlings - New OOPS w/ timer | From | Roland Dreier <> | Date | 30 Mar 2003 13:02:27 -0800 |
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Shawn> Function found was: delayed_work_timer_fn Shawn> (kernel/workqueue.c)
It looks to me like something is calling schedule_delayed_work() (which calls queue_delayed_work(), which starts a timer) and then freeing the work_struct before it's executed.
Here's a list of places that use schedule_delayed_work() where the work_struct might be kmalloc()ed. Are you using any of these drivers? (Obviously you're using tty_io, so that bears some looking at)
drivers/char/cyclades.c drivers/char/mxser.c drivers/char/tty_io.c drivers/isdn/i4l/isdn_tty.c drivers/message/fusion/mptlan.c drivers/net/hamradio/baycom_epp.c drivers/net/plip.c drivers/scsi/imm.c drivers/scsi/ppa.c
If tty_io.c is the problem, then maybe something like the patch below will find the culprit.
- Roland
===== drivers/char/tty_io.c 1.68 vs edited ===== --- 1.68/drivers/char/tty_io.c Thu Mar 27 21:15:44 2003 +++ edited/drivers/char/tty_io.c Sun Mar 30 12:51:00 2003 @@ -169,6 +169,10 @@ static inline void free_tty_struct(struct tty_struct *tty) { + if (timer_pending(&tty->flip.work.timer)) { + printk(KERN_WARNING "freeing tty with pending flip work timer from [<%p>]\n", + __builtin_return_address(0)); + } kfree(tty); } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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