Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261769AbUKHHsu (ORCPT ); Mon, 8 Nov 2004 02:48:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261774AbUKHHsu (ORCPT ); Mon, 8 Nov 2004 02:48:50 -0500 Received: from apollo.nbase.co.il ([194.90.137.2]:43535 "EHLO apollo.nbase.co.il") by vger.kernel.org with ESMTP id S261769AbUKHHsY (ORCPT ); Mon, 8 Nov 2004 02:48:24 -0500 Message-ID: <418F255D.80409@mrv.com> Date: Mon, 08 Nov 2004 09:50:53 +0200 From: emann@mrv.com (Eran Mann) User-Agent: Mozilla Thunderbird 0.9 (X11/20041103) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Ingo Molnar CC: linux-kernel@vger.kernel.org Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.18 References: <20041019124605.GA28896@elte.hu> <20041019180059.GA23113@elte.hu> <20041020094508.GA29080@elte.hu> <20041021132717.GA29153@elte.hu> <20041022133551.GA6954@elte.hu> <20041022155048.GA16240@elte.hu> <20041022175633.GA1864@elte.hu> <20041025104023.GA1960@elte.hu> <20041027001542.GA29295@elte.hu> <20041103105840.GA3992@elte.hu> <20041106155720.GA14950@elte.hu> In-Reply-To: <20041106155720.GA14950@elte.hu> Content-Type: multipart/mixed; boundary="------------030705090104000506080600" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 19479 Lines: 451 This is a multi-part message in MIME format. --------------030705090104000506080600 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Ingo Molnar wrote: > i have released the -V0.7.18 Real-Time Preemption patch, which can be > downloaded from: > > http://redhat.com/~mingo/realtime-preempt/ I got the attached oops on 2.6.10-rc1-mm3-RT-V0.7.18 (probably during the daily cron job). Later in the morning when I tried to access some filesystems I got the attached deadlock report. Relevant parts of the config: ... # CONFIG_SMP is not set CONFIG_PREEMPT=y CONFIG_PREEMPT_SOFTIRQS=y CONFIG_PREEMPT_HARDIRQS=y CONFIG_PREEMPT_REALTIME=y CONFIG_PREEMPT_BKL=y CONFIG_X86_UP_APIC=y CONFIG_X86_UP_IOAPIC=y CONFIG_X86_LOCAL_APIC=y CONFIG_X86_IO_APIC=y ... # # Kernel hacking # CONFIG_DEBUG_KERNEL=y CONFIG_MAGIC_SYSRQ=y # CONFIG_SCHEDSTATS is not set # CONFIG_DEBUG_SLAB is not set # CONFIG_DEBUG_PREEMPT is not set # CONFIG_DEBUG_SPINLOCK_SLEEP is not set CONFIG_PREEMPT_TIMING=y # CONFIG_LATENCY_TRACE is not set CONFIG_RT_DEADLOCK_DETECT=y # CONFIG_DEBUG_KOBJECT is not set # CONFIG_DEBUG_INFO is not set CONFIG_FRAME_POINTER=y CONFIG_EARLY_PRINTK=y # CONFIG_DEBUG_STACKOVERFLOW is not set # CONFIG_KPROBES is not set # CONFIG_DEBUG_STACK_USAGE is not set # CONFIG_DEBUG_PAGEALLOC is not set # CONFIG_4KSTACKS is not set CONFIG_X86_FIND_SMP_CONFIG=y CONFIG_X86_MPPARSE=y # CONFIG_KGDB is not set ... -- Eran Mann Tel: 972-4-9936297 Fax: 972-4-9890430 --------------030705090104000506080600 Content-Type: text/plain; name="oops2" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="oops2" Nov 8 04:19:32 eran kernel: BUG at include/linux/spinlock.h:767! Nov 8 04:19:32 eran kernel: ------------[ cut here ]------------ Nov 8 04:19:32 eran kernel: kernel BUG at include/linux/spinlock.h:767! Nov 8 04:19:32 eran kernel: invalid operand: 0000 [#1] Nov 8 04:19:32 eran kernel: PREEMPT Nov 8 04:19:32 eran kernel: Modules linked in: snd_via82xx snd_ac97_codec snd_mpu401_uart snd_rawmidi snd_seq_device snd_pcm_oss snd_pcm snd_timer snd_page_alloc snd_mixer_oss snd soundcore md5 ipv6 autofs 3c59x mii parport_pc parport nls_cp437 nls_iso8859_1 ntfs usbcore video thinkpad_acpi thermal processor fan button battery ac rtc Nov 8 04:19:32 eran kernel: CPU: 0 Nov 8 04:19:32 eran kernel: EIP: 0060:[] Not tainted VLI Nov 8 04:19:32 eran kernel: EFLAGS: 00010286 (2.6.10-rc1-mm3-RT-V0.7.18) Nov 8 04:19:32 eran kernel: EIP is at __try_to_free_cp_buf+0xc5/0xd0 Nov 8 04:19:32 eran kernel: eax: 00000025 ebx: ce29bfbc ecx: 00000001 edx: 00000000 Nov 8 04:19:32 eran kernel: esi: 000002ff edi: cf1f8760 ebp: cfa05d5c esp: cfa05d48 Nov 8 04:19:32 eran kernel: ds: 007b es: 007b ss: 0068 preempt: 00000001 Nov 8 04:19:32 eran kernel: Process kjournald (pid: 1445, threadinfo=cfa04000 task=cf9866c0) Nov 8 04:19:32 eran kernel: Stack: c03ecd70 c03f40ba 000002ff ce55f20c ce55f1dc cfa05d88 c01e643d ce55f20c Nov 8 04:19:32 eran kernel: cfa04000 ce55f1dc 00000000 cf1f8760 cf1f8760 00000000 cd659880 00000000 Nov 8 04:19:32 eran kernel: cfa05f28 c01e3563 cf4ebc00 cf1f8760 00000003 00009f35 cf3a7770 cf3a7770 Nov 8 04:19:32 eran kernel: Call Trace: Nov 8 04:19:32 eran kernel: [] show_stack+0x7f/0xa0 (28) Nov 8 04:19:32 eran kernel: [] show_registers+0x165/0x1d0 (56) Nov 8 04:19:32 eran kernel: [] die+0xec/0x190 (64) Nov 8 04:19:32 eran kernel: [] do_invalid_op+0x11e/0x120 (192) Nov 8 04:19:32 eran kernel: [] error_code+0x2b/0x30 (80) Nov 8 04:19:32 eran kernel: [] __journal_clean_checkpoint_list+0x5d/0x90 (44) Nov 8 04:19:32 eran kernel: [] journal_commit_transaction+0x273/0x1ac0 (416) Nov 8 04:19:32 eran kernel: [] kjournald+0x18d/0x430 (196) Nov 8 04:19:32 eran kernel: [] kernel_thread_helper+0x5/0x10 (811573268) Nov 8 04:19:32 eran kernel: Code: 4f 00 00 89 1c 24 e8 7b de f7 ff eb 9b c7 04 24 70 cd 3e c0 b9 ba 40 3f c0 be ff 02 00 00 89 74 24 08 89 4c 24 04 e8 2b 9f f3 ff <0f> 0b ff 02 ba 40 3f c0 eb bd 90 55 89 e5 57 56 53 83 ec 08 8b Nov 8 04:19:32 eran kernel: kjournald:1445 BUG: lock held at task exit time! Nov 8 04:19:32 eran kernel: [cf4ebc14] {&journal->j_state_lock} Nov 8 04:19:32 eran kernel: .. held by: kjournald/ 1445 [cf9866c0, 115]Nov 8 04:19:32 eran kernel: ... acquired at: journal_commit_transaction+0xdf/0x1ac0 Nov 8 04:19:32 eran kernel: kjournald:1445 BUG: lock held at task exit time! Nov 8 04:19:32 eran kernel: [cf4ebe50] {&journal->j_list_lock} Nov 8 04:19:32 eran kernel: .. held by: kjournald/ 1445 [cf9866c0, 115]Nov 8 04:19:32 eran kernel: ... acquired at: journal_commit_transaction+0x268/0x1ac0 Nov 8 07:20:22 eran kernel: IRQ#7 thread RT prio: 39. 2.6.10-rc1-mm3-RT-V0.7.18 --------------030705090104000506080600 Content-Type: text/plain; name="deadlock" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="deadlock" [] show_stack+0x7f/0xa0 (28) [] show_registers+0x165/0x1d0 (56) [] die+0xec/0x190 (64) [] do_invalid_op+0x11e/0x120 (192) [] error_code+0x2b/0x30 (80) [] __journal_clean_checkpoint_list+0x5d/0x90 (44) [] journal_commit_transaction+0x273/0x1ac0 (416) [] kjournald+0x18d/0x430 (196) [] kernel_thread_helper+0x5/0x10 (811573268) Code: 4f 00 00 89 1c 24 e8 7b de f7 ff eb 9b c7 04 24 70 cd 3e c0 b9 ba 40 3f c0 be ff 02 00 00 89 74 24 08 89 4c 24 04 e8 2b 9f f3 ff <0f> 0b ff 02 ba 40 3f c0 eb bd 90 55 89 e5 57 56 53 83 ec 08 8b kjournald:1445 BUG: lock held at task exit time! [cf4ebc14] {&journal->j_state_lock} .. held by: kjournald/ 1445 [cf9866c0, 115] ... acquired at: journal_commit_transaction+0xdf/0x1ac0 kjournald:1445 BUG: lock held at task exit time! [cf4ebe50] {&journal->j_list_lock} .. held by: kjournald/ 1445 [cf9866c0, 115] ... acquired at: journal_commit_transaction+0x268/0x1ac0 IRQ#7 thread RT prio: 39. ============================================ [ BUG: circular locking deadlock detected! ] -------------------------------------------- bash/3986 is deadlocking current task bash/10630 1) bash/10630 is trying to acquire this lock: [cdc048e0] {&inode->i_sem} .. held by: bash/ 3986 [c8c87890, 115] ... acquired at: vfs_readdir+0x53/0xa0 ... trying at: vfs_readdir+0x53/0xa0 2) bash/3986 is blocked on this lock: [cf4ebc14] {&journal->j_state_lock} .. held by: bash/10630 [cf9866c0, 115] ... acquired at: journal_commit_transaction+0xdf/0x1ac0 ------------------------------ | showing all locks held by: | (bash/10630 [cf9866c0, 115]): ------------------------------ ------------------------------ | showing all locks held by: | (bash/3986 [c8c87890, 115]): ------------------------------ #001: [cdc048e0] {&inode->i_sem} ... acquired at: vfs_readdir+0x53/0xa0 bash/3986's [blocked] stackdump: c3873d70 00000086 c8c87890 c0560060 c04a0440 00000001 00000246 c8c87890 c01451f9 00000001 c044f318 c044f318 00000001 00000000 24535cc0 000f7cf3 c8c87a54 c3872000 c3872000 c8c87890 c3873d94 c03c981b c044f318 00000282 Call Trace: [] schedule+0x3b/0x130 (36) [] __down_mutex+0x311/0x3b0 (84) [] __spin_lock+0x31/0x40 (24) [] _spin_lock+0x18/0x20 (16) [] start_this_handle+0x66/0x4f0 (152) [] journal_start+0xc6/0xf0 (40) [] ext3_dirty_inode+0x38/0xd0 (36) [] __mark_inode_dirty+0x1d1/0x1e0 (64) [] update_atime+0xd1/0xe0 (52) [] vfs_readdir+0x93/0xa0 (36) [] sys_getdents64+0x6b/0xb0 (48) [] sysenter_past_esp+0x52/0x71 (-8124) bash/10630's [current] stackdump: [] dump_stack+0x1e/0x30 (20) [] check_deadlock+0x1c3/0x2a0 (44) [] task_blocks_on_lock+0x1b2/0x1d0 (48) [] __down+0x226/0x350 (76) [] down+0x2e/0x160 (48) [] vfs_readdir+0x53/0xa0 (36) [] sys_getdents64+0x6b/0xb0 (48) [] sysenter_past_esp+0x52/0x71 (-8124) showing all tasks: s init/ 1 [c1279770, 116] (not blocked) s ksoftirqd/0/ 2 [c12791a0, 105] (not blocked) s desched/0/ 3 [c1278bd0, 105] (not blocked) s events/0/ 4 [c1278600, 98] (not blocked) s khelper/ 5 [c1278030, 106] (not blocked) s kthread/ 10 [cffdb790, 105] (not blocked) s kacpid/ 18 [cffdb1c0, 115] (not blocked) s IRQ 9/ 19 [cffdabf0, 115] (not blocked) s kblockd/0/ 67 [cffda620, 105] (not blocked) s pdflush/ 133 [cffda050, 116] (not blocked) s pdflush/ 134 [cfebb7b0, 116] (not blocked) s aio/0/ 136 [cfebac10, 106] (not blocked) s kswapd0/ 135 [cfebb1e0, 116] (not blocked) s IRQ 12/ 748 [cfeba070, 53] (not blocked) s IRQ 6/ 763 [c13ab7d0, 50] (not blocked) s kseriod/ 742 [cfeba640, 125] (not blocked) s IRQ 14/ 786 [c13ab200, 51] (not blocked) s IRQ 15/ 789 [c13aac30, 52] (not blocked) s IRQ 1/ 819 [c13aa660, 54] (not blocked) s reiserfs/0/ 824 [c13aa090, 105] (not blocked) s IRQ 8/ 1163 [cf987260, 55] (not blocked) s khubd/ 1357 [cf1b4820, 119] (not blocked) s IRQ 4/ 1604 [cf987830, 56] (not blocked) s IRQ 3/ 1605 [cfbb2700, 57] (not blocked) s IRQ 7/ 1637 [cf3a7770, 60] (not blocked) s IRQ 10/ 1970 [cf9860f0, 58] (not blocked) s IRQ 11/ 2044 [cf5c87a0, 59] (not blocked) s dhcpcd/ 2056 [cf5c8d70, 117] (not blocked) s syslogd/ 2097 [cfbb3870, 116] (not blocked) s klogd/ 2101 [cf2a39b0, 116] (not blocked) s portmap/ 2127 [cf1b5990, 116] (not blocked) s rpc.statd/ 2146 [cf1b53c0, 119] (not blocked) s rsync/ 2223 [cf2a2270, 118] (not blocked) s atd/ 2281 [cfd0c0b0, 116] (not blocked) s smartd/ 2291 [cf3a6600, 116] (not blocked) s sshd/ 2300 [cf1b4df0, 121] (not blocked) s xinetd/ 2313 [cd4a2bf0, 117] (not blocked) s dhcpd/ 2322 [cf2a33e0, 119] (not blocked) s sendmail/ 2339 [cf1b4250, 116] (not blocked) s sendmail/ 2347 [cfd0cc50, 117] (not blocked) s gpm/ 2357 [cd4a3790, 116] (not blocked) s crond/ 2366 [cfd0d7f0, 116] (not blocked) s xfs/ 2394 [cf986c90, 116] (not blocked) s dbus-daemon-1/ 2411 [cd4a31c0, 116] (not blocked) s cupsd/ 2422 [cfd0c680, 116] (not blocked) s mingetty/ 2632 [cfbb2cd0, 119] (not blocked) s mingetty/ 2633 [cf5c9910, 119] (not blocked) s mingetty/ 2634 [cf3a6bd0, 119] (not blocked) s mingetty/ 2635 [cf2a2e10, 118] (not blocked) s mingetty/ 2638 [cf5c9340, 118] (not blocked) s mingetty/ 2639 [cf2a2840, 118] (not blocked) s gdm-binary/ 2640 [cf5c81d0, 116] (not blocked) s gdm-binary/ 2875 [cc3271e0, 117] (not blocked) s X/ 2888 [cc366c30, 115] (not blocked) s gnome-session/ 2923 [cfd0d220, 115] (not blocked) s ssh-agent/ 2985 [cd4a2620, 116] (not blocked) s gconfd-2/ 2996 [cc366090, 116] (not blocked) s bonobo-activati/ 3519 [c8d1ed10, 116] (not blocked) s gnome-settings-/ 3521 [cc326070, 115] (not blocked) s xscreensaver/ 3917 [cc367200, 115] (not blocked) s gnome-smproxy/ 3944 [cc366660, 117] (not blocked) s metacity/ 3946 [cf3a6030, 115] (not blocked) s gnome-panel/ 3948 [c92ff260, 115] (not blocked) s nautilus/ 3950 [c92fec90, 115] (not blocked) s nautilus/ 3955 [cc3677d0, 116] (not blocked) s nautilus/ 3956 [cfbb32a0, 117] (not blocked) s nautilus/ 3957 [c892a230, 116] (not blocked) s nautilus/ 3958 [c8d1f2e0, 115] (not blocked) s nautilus/ 3959 [c8c86150, 117] (not blocked) s nautilus/ 3960 [c8d1f8b0, 116] (not blocked) s nautilus/ 3961 [c8d1e170, 116] (not blocked) s nautilus/ 3962 [c8d1e740, 116] (not blocked) s nautilus/ 3963 [cd4a2050, 116] (not blocked) s nautilus/ 3964 [cf3a71a0, 116] (not blocked) s magicdev/ 3952 [cc326640, 115] (not blocked) R gnome-terminal/ 3954 [c8ac4e50, 116] (not blocked) s mapping-daemon/ 3966 [c8ac4880, 116] (not blocked) s gnome-pty-helpe/ 3985 [c8c86720, 116] (not blocked) D bash/ 3986 [c8c87890, 115] blocked on: [cf4ebc14] {&journal->j_state_lock} .. held by: bash/10630 [cf9866c0, 115] ... acquired at: journal_commit_transaction+0xdf/0x1ac0 s notification-ar/ 3988 [c8c872c0, 115] (not blocked) s bash/ 3989 [c8c86cf0, 115] (not blocked) s wnck-applet/ 4029 [c892b970, 115] (not blocked) s multiload-apple/ 4071 [c892a800, 116] (not blocked) s gkb-applet-2/ 4079 [c892b3a0, 115] (not blocked) s tail/ 4166 [c8ac42b0, 116] (not blocked) s thunderbird/10586 [cc3277b0, 118] (not blocked) s run-mozilla.sh/10598 [c92ff830, 119] (not blocked) s thunderbird-bin/10603 [cc326c10, 115] (not blocked) s thunderbird-bin/10604 [cfbb2130, 116] (not blocked) s thunderbird-bin/10606 [c8ac5420, 116] (not blocked) D bash/10630 [cf9866c0, 115] (not blocked) --------------------------- | showing all locks held: | --------------------------- #001: [c057a080] {&hwif->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x98/0x180 #002: [c0579c94] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #003: [c0579e70] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #004: [c057a6fc] {&hwif->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x98/0x180 #005: [c057a310] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #006: [c057a4ec] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #007: [c057ad78] {&hwif->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x98/0x180 #008: [c057a98c] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #009: [c057ab68] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #010: [c057b3f4] {&hwif->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x98/0x180 #011: [c057b008] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #012: [c057b1e4] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #013: [c057ba70] {&hwif->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x98/0x180 #014: [c057b684] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #015: [c057b860] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #016: [c057c0ec] {&hwif->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x98/0x180 #017: [c057bd00] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #018: [c057bedc] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #019: [c057c768] {&hwif->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x98/0x180 #020: [c057c37c] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #021: [c057c558] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #022: [c057cde4] {&hwif->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x98/0x180 #023: [c057c9f8] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #024: [c057cbd4] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #025: [c057d460] {&hwif->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x98/0x180 #026: [c057d074] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #027: [c057d250] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #028: [c057dadc] {&hwif->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x98/0x180 #029: [c057d6f0] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #030: [c057d8cc] {&drive->gendev_rel_sem} .. held by: init/ 1 [c1279770, 116] ... acquired at: init_hwif_data+0x16d/0x180 #031: [cfd07cf0] {&tty->atomic_read} .. held by: mingetty/ 2632 [cfbb2cd0, 119] ... acquired at: read_chan+0x6c9/0x720 #032: [cc280cf0] {&tty->atomic_read} .. held by: mingetty/ 2633 [cf5c9910, 119] ... acquired at: read_chan+0x6c9/0x720 #033: [cc349cf0] {&tty->atomic_read} .. held by: mingetty/ 2638 [cf5c9340, 118] ... acquired at: read_chan+0x6c9/0x720 #034: [cc39fcf0] {&tty->atomic_read} .. held by: mingetty/ 2639 [cf2a2840, 118] ... acquired at: read_chan+0x6c9/0x720 #035: [cc32bcf0] {&tty->atomic_read} .. held by: mingetty/ 2635 [cf2a2e10, 118] ... acquired at: read_chan+0x6c9/0x720 #036: [cc3e1cf0] {&tty->atomic_read} .. held by: mingetty/ 2634 [cf3a6bd0, 119] ... acquired at: read_chan+0x6c9/0x720 #037: [c4031cf0] {&tty->atomic_read} .. held by: bash/ 3989 [c8c86cf0, 115] ... acquired at: read_chan+0x6c9/0x720 #038: [cdc048e0] {&inode->i_sem} .. held by: bash/ 3986 [c8c87890, 115] ... acquired at: vfs_readdir+0x53/0xa0 ============================================= [ turning off deadlock detection. Please report this trace. ] --------------030705090104000506080600-- - 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/