Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752208Ab0DJTFB (ORCPT ); Sat, 10 Apr 2010 15:05:01 -0400 Received: from mail.skyhub.de ([78.46.96.112]:46239 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751522Ab0DJTE7 (ORCPT ); Sat, 10 Apr 2010 15:04:59 -0400 Date: Sat, 10 Apr 2010 20:58:39 +0200 From: Borislav Petkov To: Linus Torvalds Cc: Johannes Weiner , KOSAKI Motohiro , Rik van Riel , Andrew Morton , Minchan Kim , Linux Kernel Mailing List , Lee Schermerhorn , Nick Piggin , Andrea Arcangeli , Hugh Dickins , sgunderson@bigfoot.com Subject: Re: [PATCH -v2] rmap: make anon_vma_prepare link in all the anon_vmas of a mergeable VMA Message-ID: <20100410185839.GA32035@a1.tnic> Mail-Followup-To: Borislav Petkov , Linus Torvalds , Johannes Weiner , KOSAKI Motohiro , Rik van Riel , Andrew Morton , Minchan Kim , Linux Kernel Mailing List , Lee Schermerhorn , Nick Piggin , Andrea Arcangeli , Hugh Dickins , sgunderson@bigfoot.com References: <20100410003110.GI28964@cmpxchg.org> <20100410072714.GA9246@liondog.tnic> <20100410112639.GA24708@a1.tnic> <20100410163828.GA25579@a1.tnic>

<20100410185145.GB28952@a1.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20100410185145.GB28952@a1.tnic> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8014 Lines: 125 From: Borislav Petkov Date: Sat, Apr 10, 2010 at 08:51:45PM +0200 > Anyways, testing... Nope, still b0rked. And this time is not a funny pattern but ffffffffffffffe0 we had originally. [ 521.306972] BUG: unable to handle kernel NULL pointer dereference at (null) [ 521.307126] IP: [] page_referenced+0xee/0x1dc [ 521.307126] PGD 22d952067 PUD 2291db067 PMD 0 [ 521.307126] Oops: 0000 [#1] PREEMPT SMP [ 521.307126] last sysfs file: /sys/power/state [ 521.307126] CPU 1 [ 521.307126] Modules linked in: powernow_k8 cpufreq_ondemand cpufreq_powersave cpufreq_userspace freq_table cpufreq_conservative binfmt_misc kvm_amd kvm ipv6 vfat fat dm_crypt dm_mod 8250_pnp 8250 pcspkr serial_core ohci_hcd edac_core k10temp [ 521.307126] [ 521.307126] Pid: 2896, comm: hib.sh Not tainted 2.6.34-rc3-00501-gefb57c0-dirty #5 M3A78 PRO/System Product Name [ 521.307126] RIP: 0010:[] [] page_referenced+0xee/0x1dc [ 521.307126] RSP: 0018:ffff88022bd9f8b8 EFLAGS: 00010283 [ 521.307126] RAX: ffff88022af8c338 RBX: ffffea00067e2998 RCX: 0000000000000000 [ 521.307126] RDX: ffff88022bd9fcf8 RSI: ffff88022af8c310 RDI: ffff88022c0c5e60 [ 521.307126] RBP: ffff88022bd9f938 R08: 0000000000000002 R09: 0000000000000000 [ 521.307126] R10: ffff88022b4454d8 R11: ffffffff00000012 R12: 0000000000000000 [ 521.307126] R13: ffffffffffffffe0 R14: ffff88022af8c2f8 R15: ffff88022bd9fa00 [ 521.307126] FS: 00007ff70fb586f0(0000) GS:ffff88000a200000(0000) knlGS:0000000000000000 [ 521.307126] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 521.307126] CR2: 0000000000000000 CR3: 000000022e19c000 CR4: 00000000000006e0 [ 521.307126] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 521.307126] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 521.307126] Process hib.sh (pid: 2896, threadinfo ffff88022bd9e000, task ffff88022c0c5e60) [ 521.307126] Stack: [ 521.307126] ffff88022af8c338 00000000810c5dd3 ffff88022bd9f918 ffffffff810c5f3c [ 521.307126] <0> ffff880200000000 ffffffff00000001 ffff88022bd9ffd8 ffffea00067d2cf0 [ 521.307126] <0> ffffea00067d2cf0 000000022bd9fcf8 ffffea00067d2cf0 ffffea00067e29c0 [ 521.307126] Call Trace: [ 521.307126] [] ? try_to_unmap_anon+0xa2/0xb4 [ 521.307126] [] shrink_page_list+0x154/0x4c7 [ 521.307126] [] ? print_lock_contention_bug+0x1b/0xe1 [ 521.307126] [] ? isolate_pages_global+0xd0/0x1fc [ 521.307126] [] ? _raw_spin_unlock_irq+0x30/0x58 [ 521.307126] [] shrink_inactive_list+0x35b/0x60c [ 521.307126] [] shrink_zone+0x30c/0x3d6 [ 521.307126] [] do_try_to_free_pages+0x191/0x29a [ 521.307126] [] shrink_all_memory+0x95/0xc4 [ 521.307126] [] ? isolate_pages_global+0x0/0x1fc [ 521.307126] [] ? count_data_pages+0x65/0x79 [ 521.307126] [] hibernate_preallocate_memory+0x1aa/0x2cb [ 521.307126] [] ? printk+0x41/0x45 [ 521.307126] [] hibernation_snapshot+0x36/0x1e1 [ 521.307126] [] hibernate+0xce/0x172 [ 521.307126] [] state_store+0x5c/0xd3 [ 521.307126] [] kobj_attr_store+0x17/0x19 [ 521.307126] [] sysfs_write_file+0x108/0x144 [ 521.307126] [] vfs_write+0xb2/0x153 [ 521.307126] [] ? trace_hardirqs_on_caller+0x1f/0x14b [ 521.307126] [] sys_write+0x4a/0x71 [ 521.307126] [] system_call_fastpath+0x16/0x1b [ 521.307126] Code: 3b 56 10 73 1e 48 83 fa f2 74 18 48 8d 4d cc 4d 89 f8 48 89 df e8 11 f2 ff ff 41 01 c4 83 7d cc 00 74 19 4d 8b 6d 20 49 83 ed 20 <49> 8b 45 20 0f 18 08 49 8d 45 20 48 39 45 80 75 aa 4c 89 f7 e8 [ 521.307126] RIP [] page_referenced+0xee/0x1dc [ 521.307126] RSP [ 521.307126] CR2: 0000000000000000 [ 521.320888] ---[ end trace 023d26183296e92e ]--- [ 521.321033] note: hib.sh[2896] exited with preempt_count 2 [ 521.321206] BUG: scheduling while atomic: hib.sh/2896/0x10000003 [ 521.321355] INFO: lockdep is turned off. [ 521.321500] Modules linked in: powernow_k8 cpufreq_ondemand cpufreq_powersave cpufreq_userspace freq_table cpufreq_conservative binfmt_misc kvm_amd kvm ipv6 vfat fat dm_crypt dm_mod 8250_pnp 8250 pcspkr serial_core ohci_hcd edac_core k10temp [ 521.322884] Pid: 2896, comm: hib.sh Tainted: G D 2.6.34-rc3-00501-gefb57c0-dirty #5 [ 521.323139] Call Trace: [ 521.323288] [] ? __debug_show_held_locks+0x1b/0x24 [ 521.323440] [] __schedule_bug+0x72/0x77 [ 521.323587] [] schedule+0xe3/0x7ff [ 521.323735] [] __cond_resched+0x18/0x24 [ 521.323882] [] _cond_resched+0x2c/0x37 [ 521.324029] [] unmap_vmas+0x719/0x911 [ 521.324207] [] exit_mmap+0x102/0x1e4 [ 521.324356] [] ? exit_mmap+0x69/0x1e4 [ 521.324503] [] mmput+0x48/0xb9 [ 521.324651] [] exit_mm+0x110/0x11d [ 521.324798] [] do_exit+0x1c5/0x6e5 [ 521.324945] [] ? kmsg_dump+0x13b/0x155 [ 521.325093] [] ? oops_end+0x47/0x93 [ 521.325244] [] oops_end+0x8e/0x93 [ 521.325396] [] no_context+0x1fc/0x20b [ 521.325544] [] __bad_area_nosemaphore+0x18c/0x1af [ 521.325691] [] ? do_page_fault+0xa8/0x32d [ 521.325839] [] bad_area_nosemaphore+0x13/0x15 [ 521.325987] [] do_page_fault+0x173/0x32d [ 521.326138] [] ? __call_rcu+0x11d/0x130 [ 521.326289] [] ? error_sti+0x5/0x6 [ 521.326437] [] ? trace_hardirqs_off_caller+0x1f/0xa9 [ 521.326586] [] ? trace_hardirqs_off_thunk+0x3a/0x3c [ 521.326737] [] page_fault+0x1f/0x30 [ 521.326885] [] ? page_referenced+0xee/0x1dc [ 521.327034] [] ? page_referenced+0x80/0x1dc [ 521.327185] [] ? try_to_unmap_anon+0xa2/0xb4 [ 521.327336] [] shrink_page_list+0x154/0x4c7 [ 521.327483] [] ? print_lock_contention_bug+0x1b/0xe1 [ 521.327632] [] ? isolate_pages_global+0xd0/0x1fc [ 521.327780] [] ? _raw_spin_unlock_irq+0x30/0x58 [ 521.327928] [] shrink_inactive_list+0x35b/0x60c [ 521.328079] [] shrink_zone+0x30c/0x3d6 [ 521.328232] [] do_try_to_free_pages+0x191/0x29a [ 521.328387] [] shrink_all_memory+0x95/0xc4 [ 521.328535] [] ? isolate_pages_global+0x0/0x1fc [ 521.328683] [] ? count_data_pages+0x65/0x79 [ 521.328831] [] hibernate_preallocate_memory+0x1aa/0x2cb [ 521.328979] [] ? printk+0x41/0x45 [ 521.329130] [] hibernation_snapshot+0x36/0x1e1 [ 521.329283] [] hibernate+0xce/0x172 [ 521.329432] [] state_store+0x5c/0xd3 [ 521.329580] [] kobj_attr_store+0x17/0x19 [ 521.329727] [] sysfs_write_file+0x108/0x144 [ 521.329875] [] vfs_write+0xb2/0x153 [ 521.330022] [] ? trace_hardirqs_on_caller+0x1f/0x14b [ 521.330174] [] sys_write+0x4a/0x71 [ 521.330326] [] system_call_fastpath+0x16/0x1b -- Regards/Gruss, Boris. -- 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/