From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with ESMTP id C1BEA8D0040 for ; Wed, 23 Mar 2011 03:18:46 -0400 (EDT) Received: by gyg10 with SMTP id 10so3460849gyg.14 for ; Wed, 23 Mar 2011 00:18:44 -0700 (PDT) MIME-Version: 1.0 Date: Wed, 23 Mar 2011 10:18:44 +0300 Message-ID: Subject: 2.6.39-rc: panic at rcu_kthread() From: Alexander Beregalov Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: Linux Kernel Mailing List , linux-mm@kvack.org Hi I do not have a testcase to reproduce it. Kernel is 2.6.38-07035-g6447f55d BUG (null): Not a valid slab page ----------------------------------------------------------------------------- INFO: Slab 0xf6c1dcc0 objects=65535 used=65535 fp=0x (null) flags=0x40000401 Pid: 6, comm: rcu_kthread Tainted: G W 2.6.38-07035-g6447f55d #1 Call Trace: [] ? printk+0x18/0x21 [] slab_err+0x6c/0x80 [] ? slab_pad_check+0x2f/0x150 [] ? slab_pad_check+0x2f/0x150 [] ? sched_clock_cpu+0x7d/0xf0 [] check_slab+0xcc/0x120 [] ? init_object+0x38/0x70 [] ? rcu_process_callbacks+0x55/0x90 [] free_debug_processing+0x1a/0x220 [] ? trace_hardirqs_off+0xb/0x10 [] ? debug_check_no_locks_freed+0x129/0x140 [] ? rcu_process_callbacks+0x55/0x90 [] __slab_free+0xac/0x140 [] ? inetpeer_free_rcu+0x10/0x20 [] ? rcu_process_callbacks+0x55/0x90 [] kmem_cache_free+0xeb/0x100 [] ? inetpeer_free_rcu+0x10/0x20 [] ? inetpeer_free_rcu+0x10/0x20 [] ? file_free_rcu+0x0/0x30 [] inetpeer_free_rcu+0x10/0x20 [] ? rcu_process_callbacks+0x5a/0x90 [] ? rcu_kthread+0xe5/0x100 [] ? autoremove_wake_function+0x0/0x50 [] ? rcu_kthread+0x0/0x100 [] ? kthread+0x74/0x80 [] ? kthread+0x0/0x80 [] ? kernel_thread_helper+0x6/0xd FIX (null): Object at 0xc1066125 not freed BUG: unable to handle kernel NULL pointer dereference at 00000002 IP: [] 0xf64665e0 *pde = 00000000 Oops: 0002 [#1] last sysfs file: /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed Modules linked in: hwmon_vid sata_sil i2c_nforce2 Pid: 6, comm: rcu_kthread Tainted: G W 2.6.38-07035-g6447f55d #1 /NF7-S/NF7,NF7-V (nVidia-nForce2) EIP: 0060:[] EFLAGS: 00010286 CPU: 0 EIP is at 0xf64665e0 EAX: 00000002 EBX: db384030 ECX: 00000000 EDX: 00000000 ESI: d8805700 EDI: 00000283 EBP: c106612a ESP: f6479f58 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 Process rcu_kthread (pid: 6, ti=f6478000 task=f64665e0 task.ti=f6478000) Stack: f6479f74 f6479f80 f6479f94 c1066245 00000001 f64665e0 00000202 00000000 f64665e0 c1042100 f6479f80 f6479f80 f6469f30 00000000 c1066160 f6479fe4 c1041e14 00000000 00000000 00000000 00000001 dead4ead ffffffff ffffffff Call Trace: [] ? rcu_kthread+0xe5/0x100 [] ? autoremove_wake_function+0x0/0x50 [] ? rcu_kthread+0x0/0x100 [] ? kthread+0x74/0x80 [] ? kthread+0x0/0x80 [] ? kernel_thread_helper+0x6/0xd Code: 94 02 c1 00 00 00 00 1b 08 00 00 bf c8 02 00 89 8c 02 c1 00 00 00 00 06 00 00 00 8c c8 02 00 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 00 00 00 00 80 47 f6 02 00 00 00 40 a0 20 80 00 00 00 00 ff EIP: [] 0xf64665e0 SS:ESP 0068:f6479f58 CR2: 0000000000000002 ---[ end trace 8a45d2bc24cd677d ]--- Kernel panic - not syncing: Fatal exception in interrupt Pid: 6, comm: rcu_kthread Tainted: G D W 2.6.38-07035-g6447f55d #1 Call Trace: [] ? printk+0x18/0x21 [] panic+0x57/0x140 [] oops_end+0x8f/0x90 [] no_context+0xb4/0x150 [] __bad_area_nosemaphore+0x8d/0x130 [] ? tick_dev_program_event+0x3a/0x130 [] ? do_page_fault+0x1ee/0x480 [] ? do_page_fault+0x0/0x480 [] ? do_page_fault+0x0/0x480 [] bad_area_nosemaphore+0x12/0x20 [] do_page_fault+0x2dc/0x480 [] ? irq_exit+0x3d/0x90 [] ? restore_all_notrace+0x0/0x18 [] ? trace_hardirqs_on_thunk+0xc/0x10 [] ? restore_all_notrace+0x0/0x18 [] ? rcu_process_callbacks+0x55/0x90 [] ? rcu_process_callbacks+0x5a/0x90 [] ? do_page_fault+0x0/0x480 [] ? rcu_process_callbacks+0x5a/0x90 [] error_code+0x5d/0x64 [] ? rcu_process_callbacks+0x5a/0x90 [] ? do_page_fault+0x0/0x480 [] ? rcu_kthread+0xe5/0x100 [] ? autoremove_wake_function+0x0/0x50 [] ? rcu_kthread+0x0/0x100 [] ? kthread+0x74/0x80 [] ? kthread+0x0/0x80 [] ? kernel_thread_helper+0x6/0xd -- 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