From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx196.postini.com [74.125.245.196]) by kanga.kvack.org (Postfix) with SMTP id B87986B0069 for ; Thu, 12 Jan 2012 01:41:01 -0500 (EST) Received: by lagj5 with SMTP id j5so985431lag.14 for ; Wed, 11 Jan 2012 22:40:59 -0800 (PST) Date: Thu, 12 Jan 2012 08:40:43 +0200 (EET) From: Pekka Enberg Subject: Re: Several bugs in latest kernel In-Reply-To: <20120111190829.GG4118@suse.de> Message-ID: References: <4F0DCFFC.5040805@linux.vnet.ibm.com> <20120111190829.GG4118@suse.de> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: "Srivatsa S. Bhat" , Al Viro , Tejun Heo , Linus Torvalds , linux-mm@kvack.org, linux-kernel , Peter Zijlstra , "mingo@elte.hu" , "akpm@linux-foundation.org" On Wed, 11 Jan 2012, Mel Gorman wrote: >> [ 7314.427769] CPU 3 >> [ 7314.427769] Modules linked in: ipv6 cpufreq_conservative cpufreq_userspace cpufreq_powersave acpi_cpufreq mperf microcode fuse loop dm_mod bnx2 ioatdma tpm_tis tpm cdc_ether usbnet i2c_i801 iTCO_wdt mii i7core_edac i2c_core dca edac_core iTCO_vendor_support rtc_cmos tpm_bios shpchp pci_hotplug button pcspkr serio_raw sg uhci_hcd ehci_hcd usbcore usb_common sd_mod crc_t10dif edd ext3 mbcache jbd fan processor mptsas mptscsih mptbase scsi_transport_sas scsi_mod thermal thermal_sys hwmon >> [ 7314.427769] >> [ 7314.427769] Pid: 6699, comm: cron Tainted: G W 3.2.0-0.0.0.28.36b5ec9-default #3 IBM IBM System x -[7870C4Q]-/68Y8033 >> [ 7314.427769] RIP: 0010:[] [] cache_alloc_refill+0x1e9/0x290 >> [ 7314.427769] RSP: 0018:ffff8808c881bc48 EFLAGS: 00010046 >> [ 7314.427769] RAX: 000000000000000f RBX: ffff8808ca66b000 RCX: 0000000000000018 >> [ 7314.427769] RDX: ffff8808c7e2d040 RSI: ffff8808c8f60040 RDI: 0000000000000024 >> [ 7314.427769] RBP: ffff8808c881bc88 R08: ffff8808ff802510 R09: ffff8808ff802520 >> [ 7314.427769] R10: dead000000200200 R11: dead000000100100 R12: 0000000000000024 >> [ 7314.427769] R13: ffff8808ff800880 R14: ffff8808ff802500 R15: 0000000000000000 >> [ 7314.427769] FS: 00007fdcd8f54780(0000) GS:ffff8808ffcc0000(0000) knlGS:0000000000000000 >> [ 7314.427769] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> [ 7314.427769] CR2: ffffffffff600400 CR3: 00000008c6e95000 CR4: 00000000000006e0 >> [ 7314.427769] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 >> [ 7314.427769] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 >> [ 7314.427769] Process cron (pid: 6699, threadinfo ffff8808c881a000, task ffff8808c68a0380) >> [ 7314.427769] Stack: >> [ 7314.427769] ffffffff81785cf1 00000000000412d0 ffff8808ff802540 ffff8808ff800880 >> [ 7314.427769] ffff8808ff800880 0000000000000100 00000000000000d0 00000000000000d0 >> [ 7314.427769] ffff8808c881bcd8 ffffffff8115c7e7 ffff8808c881bd26 ffffffff81230418 >> [ 7314.427769] Call Trace: >> [ 7314.427769] [] __kmalloc+0x327/0x330 >> [ 7314.427769] [] ? aa_get_name+0x58/0x100 >> [ 7314.427769] [] aa_get_name+0x58/0x100 >> [ 7314.427769] [] ? cap_bprm_set_creds+0x239/0x2a0 >> [ 7314.427769] [] apparmor_bprm_set_creds+0x112/0x580 >> [ 7314.427769] [] ? __lock_release+0x7e/0x170 >> [ 7314.427769] [] ? might_fault+0x4e/0xa0 >> [ 7314.427769] [] security_bprm_set_creds+0xe/0x10 >> [ 7314.427769] [] prepare_binprm+0xca/0x140 >> [ 7314.427769] [] do_execve_common+0x204/0x320 >> [ 7314.427769] [] do_execve+0x3a/0x40 >> [ 7314.427769] [] sys_execve+0x49/0x70 >> [ 7314.427769] [] stub_execve+0x6c/0xc0 >> [ 7314.427769] Code: 08 49 89 76 10 eb a6 0f 1f 00 49 8b 76 20 41 c7 86 90 00 00 00 01 00 00 00 49 39 f1 74 97 8b 46 20 41 3b 45 18 0f 82 02 ff ff ff <0f> 0b eb fe 0f 1f 00 41 39 c4 41 89 c7 45 0f 46 fc e9 ab fe ff >> [ 7314.427769] RIP [] cache_alloc_refill+0x1e9/0x290 >> [ 7314.427769] RSP > > This does not look familiar but I am not up to date on linux-mm. Pekka, > does this ring a bell? No, I don't think I've seen this before but it looks like a plain old slab corruption issue that's probably related to AppArmor. Pekka -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org