From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from an-out-0708.google.com (an-out-0708.google.com [209.85.132.243]) by ozlabs.org (Postfix) with ESMTP id 0186DDDED3 for ; Tue, 31 Jul 2007 03:07:50 +1000 (EST) Received: by an-out-0708.google.com with SMTP id c37so265343anc for ; Mon, 30 Jul 2007 10:07:49 -0700 (PDT) Message-ID: <34ac6d890707301007j128e4656tf8319c7b19e362a1@mail.gmail.com> Date: Mon, 30 Jul 2007 22:37:49 +0530 From: "Girish kathalagiri" To: linuxppc-dev@ozlabs.org Subject: BUG: scheduling while atomic MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_34589_1666409.1185815269568" List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , ------=_Part_34589_1666409.1185815269568 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hi, I am running linux-2.6.22.1-rt8 on mpc5200 and on running stress ./stress --cpu 8 --io 4 --vm 2 --vm-bytes 2M --timeout 300s I get the following stack.But this does not happen with non rt kernel. LR = 0xff51fcc BUG: scheduling while atomic: stress/0x00000002/739, CPU#0 Call Trace: [c04fbb80] [c0008650] show_stack+0x50/0x190 (unreliable) [c04fbbb0] [c0016fc0] __schedule_bug+0x38/0x48 [c04fbbc0] [c01d4f7c] __schedule+0x3dc/0x450 [c04fbbf0] [c01d56c8] schedule+0x54/0xf0 [c04fbc00] [c01d6390] rt_spin_lock_slowlock+0x100/0x224 [c04fbc60] [c0052198] get_zone_pcp+0x30/0x58 [c04fbc80] [c0053078] free_hot_cold_page+0x114/0x1fc [c04fbcb0] [c0056424] put_page+0x50/0x15c [c04fbcd0] [c0069854] free_page_and_swap_cache+0x44/0x80 [c04fbce0] [c005d760] unmap_vmas+0x2e0/0x788 [c04fbd70] [c006292c] exit_mmap+0x74/0x108 [c04fbda0] [c001adc0] mmput+0x54/0xf0 [c04fbdc0] [c001ecfc] exit_mm+0xc0/0x124 [c04fbde0] [c001ffd0] do_exit+0x164/0x8bc [c04fbe20] [c0020760] do_group_exit+0x38/0x90 [c04fbe40] [c002ba48] get_signal_to_deliver+0x2ac/0x3c0 [c04fbe70] [c000739c] do_signal+0x50/0x60c [c04fbf40] [c000fec0] do_user_signal+0x74/0xc4 --- Exception: c00 at 0xfeab1dc LR = 0xff51fcc Thanks in advance -- Regards, Giri ------=_Part_34589_1666409.1185815269568 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hi,
I am running linux-2.6.22.1-rt8 on mpc5200 and on running stress

./stress --cpu 8 --io 4 --vm 2 --vm-bytes 2M --timeout 300s

I get the following stack.But this does not happen with non rt kernel.

   LR = 0xff51fcc
BUG: scheduling while atomic: stress/0x00000002/739, CPU#0
Call Trace:
[c04fbb80] [c0008650] show_stack+0x50/0x190 (unreliable)
[c04fbbb0] [c0016fc0] __schedule_bug+0x38/0x48
[c04fbbc0] [c01d4f7c] __schedule+0x3dc/0x450
[c04fbbf0] [c01d56c8] schedule+0x54/0xf0
[c04fbc00] [c01d6390] rt_spin_lock_slowlock+0x100
/0x224
[c04fbc60] [c0052198] get_zone_pcp+0x30/0x58
[c04fbc80] [c0053078] free_hot_cold_page+0x114/0x1fc
[c04fbcb0] [c0056424] put_page+0x50/0x15c
[c04fbcd0] [c0069854] free_page_and_swap_cache+0x44/0x80
[c04fbce0] [c005d760] unmap_vmas+0x2e0/0x788
[c04fbd70] [c006292c] exit_mmap+0x74/0x108
[c04fbda0] [c001adc0] mmput+0x54/0xf0
[c04fbdc0] [c001ecfc] exit_mm+0xc0/0x124
[c04fbde0] [c001ffd0] do_exit+0x164/0x8bc
[c04fbe20] [c0020760] do_group_exit+0x38/0x90
[c04fbe40] [c002ba48] get_signal_to_deliver+0x2ac/0x3c0
[c04fbe70] [c000739c] do_signal+0x50/0x60c
[c04fbf40] [c000fec0] do_user_signal+0x74/0xc4
--- Exception: c00 at 0xfeab1dc
   LR = 0xff51fcc

Thanks in advance
--
Regards,
Giri ------=_Part_34589_1666409.1185815269568--