Re: bugs in __schedule()

Satyam Sharma wrote:

Hi Gavin,

On 6/26/07, gshan <[email protected]> wrote:

Here is the all output I have:

# ifconfig mgt0 10.0.51.27
BUG: scheduling while atomic: exe/0x00000101/752

Yup, you can't sleep in taskets, they're atomic.

caller is schedule+0x4c/0xe4
Call trace:
 [c02dc4dc] __schedule+0x654/0x788
 [c02dc6f4] schedule+0x4c/0xe4
 [c02dbe24] __compat_down+0xc8/0x12c

So, you can't use / acquire semaphores in them. Use spinlocks.
If the shared data is also accessed from process context, use
spin_lock_bh() from the process context code.

Satyam

Thanks, Satyam. So I can replace the tasklet with kernel thread?
-
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: bugs in __schedule()
    • From: "Satyam Sharma" <[email protected]>

• References:
  • bugs in __schedule()
    • From: gshan <[email protected]>
  • Re: bugs in __schedule()
    • From: "Satyam Sharma" <[email protected]>
  • Re: bugs in __schedule()
    • From: gshan <[email protected]>
  • Re: bugs in __schedule()
    • From: "Satyam Sharma" <[email protected]>

• Prev by Date: arcmsr + dmcrypt problem
• Next by Date: Re: [patch] CFS scheduler, -v18
• Previous by thread: Re: bugs in __schedule()
• Next by thread: Re: bugs in __schedule()
• 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]