Re: [2.6.23(?)=<] X used greatest stack depth: N bytes left

On Sat, 29 Dec 2007 01:58:44 +0100 Oliver Pinter (Pintér Olivér) wrote:

> On 12/29/07, Randy Dunlap <[email protected]> wrote:
> > On Fri, 28 Dec 2007 22:11:25 +0100 Oliver Pinter (Pintér Olivér) wrote:
> >
> > > in newer kernel I recently see this warnings:
> > >
> > > X used greatest stack depth: N bytes left
> > >
> > > X E { program name }
> > > N E { x byte }
> > >
> > > ----------------8<--------------
> > > ...
> > > khelper used greatest stack depth: 7496 bytes left
> > > khelper used greatest stack depth: 7184 bytes left
> > > ...
> > > khelper used greatest stack depth: 6328 bytes left
> > > stty used greatest stack depth: 6180 bytes left
> > > mount used greatest stack depth: 6156 bytes left
> > > mknod used greatest stack depth: 5932 bytes left
> > > ...
> > > wpa_supplicant used greatest stack depth: 5740 bytes left
> > > ...
> > > dhclient3 used greatest stack depth: 5500 bytes left
> > > ----------------8<--------------
> > >
> > > it is the "results" of the CONFIG_DEBUG_STACKOVERFLOW=y
> > > CONFIG_DEBUG_STACK_USAGE=y options or it's other problem or feature?
> >
> > CONFIG_DEBUG_STACK_USAGE, in kernel/exit.c:
> >
> > ---
> 
> sure, but to 2.6.22 or 2.6.23-rcX (with merged the cfs scheduler)
> don't show this warnings, but the CONFIG_DEBUG_STACK_USAGE is enabled.

Sorry, I couldn't tell that you were asking more than that.

In 2.6.22, CONFIG_DEBUG_STACK_USAGE only causes output during
sysrq-W (show blocked state).

In 2.6.24-rc, CONFIG_DEBUG_STACK_USAGE also causes output during
process exit, which is what you are seeing.

Does that help?

---
~Randy
desserts:  http://www.xenotime.net/linux/recipes/
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: [2.6.23(?)=<] X used greatest stack depth: N bytes left
    • From: "Oliver Pinter (Pintér Olivér)" <[email protected]>

• References:
  • [2.6.23(?)=<] X used greatest stack depth: N bytes left
    • From: "Oliver Pinter (Pintér Olivér)" <[email protected]>
  • Re: [2.6.23(?)=<] X used greatest stack depth: N bytes left
    • From: Randy Dunlap <[email protected]>
  • [2.6.23(?)=<] X used greatest stack depth: N bytes left
    • From: "Oliver Pinter (Pintér Olivér)" <[email protected]>

• Prev by Date: [PATCH 10/12] scsi : Use mutex instead of semaphore in driver core
• Next by Date: [PATCH 11/12] spi : Use mutex instead of semaphore in driver core
• Previous by thread: [2.6.23(?)=<] X used greatest stack depth: N bytes left
• Next by thread: Re: [2.6.23(?)=<] X used greatest stack depth: N bytes left
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]