Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932250AbWELVwF (ORCPT ); Fri, 12 May 2006 17:52:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932251AbWELVwF (ORCPT ); Fri, 12 May 2006 17:52:05 -0400 Received: from caramon.arm.linux.org.uk ([212.18.232.186]:524 "EHLO caramon.arm.linux.org.uk") by vger.kernel.org with ESMTP id S932250AbWELVwD (ORCPT ); Fri, 12 May 2006 17:52:03 -0400 Date: Fri, 12 May 2006 22:51:51 +0100 From: Russell King To: Linus Torvalds Cc: James Bottomley , Erik Mouw , Or Gerlitz , linux-scsi@vger.kernel.org, axboe@suse.de, Andrew Vasquez , Linux Kernel Mailing List , Greg KH Subject: Re: [BUG 2.6.17-git] kmem_cache_create: duplicate cache scsi_cmd_cache Message-ID: <20060512215151.GG17120@flint.arm.linux.org.uk> Mail-Followup-To: Linus Torvalds , James Bottomley , Erik Mouw , Or Gerlitz , linux-scsi@vger.kernel.org, axboe@suse.de, Andrew Vasquez , Linux Kernel Mailing List , Greg KH References: <15ddcffd0605112153q57f139a1k7068e204a3eeaf1f@mail.gmail.com> <20060512171632.GA29077@harddisk-recovery.com> <1147456038.3769.39.camel@mulgrave.il.steeleye.com> <1147460325.3769.46.camel@mulgrave.il.steeleye.com> <20060512203850.GC17120@flint.arm.linux.org.uk> <20060512205804.GD17120@flint.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6060 Lines: 157 On Fri, May 12, 2006 at 02:27:19PM -0700, Linus Torvalds wrote: > [remove all the inflamatory stuff] Anyway, you asked for the original oopsen, and here they are. Enjoy. From: Todd Blumer On a PXA27x handheld (iPAQ hx4700), when we eject a mounted SD memory card, we get a kernel panic (kernel trying to clean up non-existent device). One hack patch to avoid the panic is: --- fs/partitions/check.c 10 Apr 2006 22:57:27 -0000 1.15 +++ fs/partitions/check.c 4 May 2006 20:30:15 -0000 @@ -491,6 +491,7 @@ kfree(disk_name); } put_device(disk->driverfs_dev); + disk->driverfs_dev = 0; /* HACK - what's the right solution? */ } kobject_uevent(&disk->kobj, KOBJ_REMOVE); kobject_del(&disk->kobj); ... root@ipaq-pxa270:~# Unable to handle kernel NULL pointer dereference at virtual2pgd = c218c000 [00000002] *pgd=a20ec031, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] Modules linked in: nls_iso8859_1 nls_cp437 snd_pcm_oss snd_mixer_oss snd_hx4700rCPU: 0 PC is at strlen+0xc/0x30 LR is at kobject_get_path+0x2c/0xc0 pc : [] lr : [] Not tainted sp : c21bfde4 ip : c21bfdf4 fp : c21bfdf0 r10: c21bfe28 r9 : 000007a5 r8 : c21bfe2c r7 : c3554074 r6 : 000000d0 r5 : 00000001 r4 : c3554074 r3 : 00000002 r2 : c01fa88f r1 : 00000002 r0 : 00000002 Flags: nzCv IRQs on FIQs on Mode SVC_32 Segment user Control: 397F Table: A218C000 DAC: 00000015 Process umount (pid: 2384, stack limit = 0xc21be198) Stack: (0xc21bfde4 to 0xc21c0000) fde0: c21bfe14 c21bfdf4 c00eb724 c00ee56c c34876c0 c355400c c3542b78 fe00: 0000001a c21bfe2c c21bfe58 c21bfe18 c00e2edc c00eb704 000007a5 c21bfe28 fe20: c01fa888 000000fe 00000012 00000002 c3c9585b c0226e04 c32ff7a8 c3542b60 fe40: c3c9583f c01fab8c c0226db0 c21bfeb0 c21bfe5c c00ec130 c00e2dcc c3c9585b fe60: 000007a5 c3c95800 c0226dc4 c3e15b20 00000001 00000001 00000000 00000000 fe80: ffffffff bee45e28 c0331040 c3554200 c3554200 00000000 00000000 c21bff28 fea0: c21bff20 c21bfec0 c21bfeb4 c0084d6c c00ebf1c c21bfed8 c21bfec4 c0084f04 fec0: c0084d48 c3554200 c0225d84 c21bfef0 c21bfedc c0083d90 c0084ef0 c3554200 fee0: c032bd20 c21bff08 c21bfef4 c009b804 c0083d30 c21bff28 c21be000 c21bff1c ff00: c21bff0c c008baec c009b79c 00000000 c21bff94 c21bff20 c009c0ec c008bad8 ff20: c21bff20 c21bff20 c20e73a0 c032bd20 c21bff3c c0024db0 c00ee388 00000001 ff40: 00000001 00000000 00000000 ffffffff bee45e28 00000000 00000000 c21bffb0 ff60: 00000000 00091050 c21bff9c bee44db8 000923c8 bee44db8 00000016 c001cf64 ff80: c21be000 00091050 c21bffa4 c21bff98 c009c114 c009beec 00000000 c21bffa8 ffa0: c001cdc0 c009c10c bee44db8 000923c8 bee44db8 bee44dba 000923ca 0000006d ffc0: bee44db8 000923c8 bee44db8 00000000 00090710 00000000 00091050 00000000 ffe0: 40160e70 bee44d9c 00063fc4 40160e74 60000010 bee44db8 401bd7d8 400dad9c Backtrace: [] (strlen+0x0/0x30) from [] (kobject_get_path+0x2c/0xc0) [] (kobject_get_path+0x0/0xc0) from [] (block_uevent+0x11c/) r8 = C21BFE2C r7 = 0000001A r6 = C3542B78 r5 = C355400C r4 = C34876C0 [] (block_uevent+0x0/0x1f4) from [] (kobject_uevent+0x220/0)[] (kobject_uevent+0x0/0x478) from [] (bdev_uevent+0x30/0x3)[] (bdev_uevent+0x0/0x34) from [] (kill_block_super+0x20/0x)[] (kill_block_super+0x0/0x3c) from [] (deactivate_super+0x) r5 = C0225D84 r4 = C3554200 [] (deactivate_super+0x0/0x84) from [] (mntput_no_expire+0x) r5 = C032BD20 r4 = C3554200 [] (mntput_no_expire+0x0/0xc0) from [] (path_release_on_umo) r5 = C21BE000 r4 = C21BFF28 [] (path_release_on_umount+0x0/0x24) from [] (sys_umount+0x) r4 = 00000000 [] (sys_umount+0x0/0x220) from [] (sys_oldumount+0x14/0x18) [] (sys_oldumount+0x0/0x18) from [] (ret_fast_syscall+0x0/0)Code: e89da800 e1a0c00d e92dd800 e24cb004 (e5d03000) and: From: Mikkel Erup BUG: unable to handle kernel NULL pointer dereference at virtual address 00000002 printing eip: c021570d *pde = 00000000 Oops: 0000 [#1] PREEMPT Modules linked in: nls_iso8859_1 nls_cp437 vfat fat speedstep_lib i915 drm mmc_block nvram pcmcia yenta_socket rsrc_nonstatic sdhci pcmcia_core e1000 mmc_core evdev CPU: 0 EIP: 0060:[] Not tainted VLI EFLAGS: 00010202 (2.6.16-git20 #3) EIP is at kobject_get_path+0x2d/0xe0 eax: 00000000 ebx: 00000001 ecx: ffffffff edx: 00000000 esi: e35e9e74 edi: 00000002 ebp: 000007a5 esp: dcea1e5c ds: 007b es: 007b ss: 0068 Process umount (pid: 3407, threadinfo=dcea0000 task=dd334a30) Stack: <0>c038cad3 dcea1ea0 00000008 dcea1e9c e2765200 e35e9e0c df304158 000007a5 c020bb5d e35e9e74 000000d0 dcea1ea0 de9ad85b 000007a5 dcea1ea4 c038cacb 000000fe 00000002 00000012 c020ba50 c03c8860 0000001a de9ad800 c0215d1e Call Trace: block_uevent+0x10d/0x210 block_uevent+0x0/0x210 kobject_uevent+0x1fe/0x520 bdev_uevent+0x20/0x40 kill_block_super+0x21/0x50 deactivate_super+0x70/0xa0 sys_umount+0x4b/0x280 sysenter_past_esp+0x54/0x75 Code: d2 57 56 53 bb 01 00 00 00 83 ec 10 8b 74 24 24 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 8b 3e 85 ff 74 1d b9 ff ff ff ff 89 d0 ae f7 d1 49 8b 76 24 8d 2c 19 8d 5d 01 85 f6 75 e1 85 db 75 Now, can I have your permission not to do anything more tonight? Is that okay with you, or are you going to rant about that as well? -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/