From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ausmtp04.au.ibm.com (ausmtp04.au.ibm.com [202.81.18.152]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "ausmtp04.au.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTP id 0294267BF2 for ; Tue, 17 Oct 2006 23:17:15 +1000 (EST) Received: from sd0208e0.au.ibm.com (d23rh904.au.ibm.com [202.81.18.202]) by ausmtp04.au.ibm.com (8.13.8/8.13.5) with ESMTP id k9HDQqBP162846 for ; Tue, 17 Oct 2006 23:26:52 +1000 Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.250.244]) by sd0208e0.au.ibm.com (8.13.6/8.13.6/NCO v8.1.1) with ESMTP id k9HDKSNZ201498 for ; Tue, 17 Oct 2006 23:20:34 +1000 Received: from d23av03.au.ibm.com (loopback [127.0.0.1]) by d23av03.au.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id k9HDH3qe000924 for ; Tue, 17 Oct 2006 23:17:03 +1000 Message-ID: <4534D7C6.2080402@cn.ibm.com> Date: Tue, 17 Oct 2006 21:16:54 +0800 From: Yao Fei Zhu MIME-Version: 1.0 To: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org Subject: [Regression] cpu hotplug failed on kernel 2.6.19-rc2 Content-Type: text/plain; charset=gb2312 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Running cpu hotplug regression tsstcase lhcs_regression on kernel 2.6.19-rc2/IBM System p5 will fall into xmon. 1:mon> e cpu 0x1: Vector: 300 (Data Access) at [c000000023fa3570] pc: c0000000000abfa0: .__drain_pages+0x50/0xbc lr: c0000000000abfd8: .__drain_pages+0x88/0xbc sp: c000000023fa37f0 msr: 8000000000001032 dar: 0 dsisr: 40010000 current = 0xc000000002a5d070 paca = 0xc000000000494800 pid = 3345, comm = hotplug01.sh 1:mon> t [c000000023fa3890] c0000000000ac040 .page_alloc_cpu_notify+0x34/0x70 [c000000023fa3910] c000000000378190 .notifier_call_chain+0x4c/0x90 [c000000023fa39a0] c000000000076b2c .blocking_notifier_call_chain+0x3c/0x6c [c000000023fa3a40] c00000000008989c .cpu_down+0x218/0x32c [c000000023fa3b30] c000000000242a0c .store_online+0x44/0xa0 [c000000023fa3bc0] c00000000023d0e0 .sysdev_store+0x44/0x60 [c000000023fa3c40] c00000000013f160 .sysfs_write_file+0x134/0x1b8 [c000000023fa3cf0] c0000000000dd814 .vfs_write+0x118/0x200 [c000000023fa3d90] c0000000000ddf84 .sys_write+0x4c/0x8c [c000000023fa3e30] c00000000000871c syscall_exit+0x0/0x40 --- Exception: c01 (System Call) at 000000000fe0de7c SP (f8ccc0c0) is in userspace 1:mon> r R00 = 8000000000001032 R16 = 00000000100a0000 R01 = c000000023fa37f0 R17 = 00000000100c2cd8 R02 = c0000000005cc460 R18 = 000000000000003f R03 = c000000049fff600 R19 = 0000000000000000 R04 = 0000000000000000 R20 = c0000000004c9078 R05 = c000000020dc3250 R21 = 0000000000000005 R06 = 0000000000000000 R22 = c000000000665180 R07 = 0000000000000000 R23 = 0000000000008002 R08 = 0000000000000008 R24 = 0000000000000005 R09 = c000000049fff628 R25 = 0000000000000005 R10 = 0000000000000100 R26 = 0000000000000005 R11 = c000000049fff600 R27 = 0000000000000000 R12 = 0000000000000000 R28 = c000000049fff600 R13 = c000000000494800 R29 = 8000000000001032 R14 = 0000000010080000 R30 = c0000000004d31c8 R15 = 0000000000000000 R31 = 0000000000000000 pc = c0000000000abfa0 .__drain_pages+0x50/0xbc lr = c0000000000abfd8 .__drain_pages+0x88/0xbc msr = 8000000000001032 cr = 24242448 ctr = c0000000000ac00c xer = 0000000000000001 trap = 300 dar = 0000000000000000 dsisr = 40010000 1:mon> di c0000000000abfa0 c0000000000abfa0 e89f0002 lwa r4,0(r31) c0000000000abfa4 7f83e378 mr r3,r28 c0000000000abfa8 38bf0010 addi r5,r31,16 c0000000000abfac 38c00000 li r6,0 c0000000000abfb0 4bfff9c1 bl c0000000000ab970 # .free_pages_bulk+0x0/0x2b4 c0000000000abfb4 38000000 li r0,0 c0000000000abfb8 901f0000 stw r0,0(r31) c0000000000abfbc 7fa10164 mtmsrd r29,1 c0000000000abfc0 3b7b0001 addi r27,r27,1 c0000000000abfc4 3bff0020 addi r31,r31,32 c0000000000abfc8 2fbb0002 cmpdi cr7,r27,2 c0000000000abfcc 409effc4 bne cr7,c0000000000abf90 # .__drain_pages+0x40/0xbc c0000000000abfd0 7f83e378 mr r3,r28 c0000000000abfd4 48008c09 bl c0000000000b4bdc # .next_zone+0x0/0x48 c0000000000abfd8 60000000 nop c0000000000abfdc 2fa30000 cmpdi cr7,r3,0 1:mon> mi 1:mon>