Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755983AbYKCNd0 (ORCPT ); Mon, 3 Nov 2008 08:33:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755288AbYKCNdH (ORCPT ); Mon, 3 Nov 2008 08:33:07 -0500 Received: from yw-out-2324.google.com ([74.125.46.29]:7416 "EHLO yw-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755321AbYKCNdD (ORCPT ); Mon, 3 Nov 2008 08:33:03 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:subject:cc:mime-version:content-type :content-transfer-encoding:content-disposition; b=I6H3HTVKnUBxJVEfkrE6XZkMkXEOcLqrOlBVhXjgWi2V5Qj/0U441e47deSy67TXtL BRyVAksVSFATwj5b7gRHALEX1LTxqYONa+6HVnAMtnHVsfyA7GDuFolzqgiWnibyuk73 juTu8/f1PtyBvyckGcHccwv14f5Q8q4g8sVy4= Message-ID: Date: Mon, 3 Nov 2008 16:33:01 +0300 From: "Alexander Beregalov" Subject: Deadlock at io_schedule? (Re: linux-next: Tree for November 3) Cc: linux-next@vger.kernel.org, LKML , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline To: unlisted-recipients:; (no To-header on input) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6328 Lines: 154 Hi 2.6.28-rc3-next-20081103 on sparc64 SysRq : Emergency Sync SysRq : Emergency Sync SysRq : Emergency Sync SysRq : Show Locks Held Showing all locks held in the system: 1 lock held by pdflush/163: #0: (&type->s_umount_key#13){----}, at: [<00000000004cf148>] __sync_inodes+0x5c/0xd4 1 lock held by pdflush/164: #0: (&type->s_umount_key#13){----}, at: [<00000000004cf148>] __sync_inodes+0x5c/0xd4 1 lock held by metalog/1413: #0: (&sb->s_type->i_mutex_key#3){--..}, at: [<0000000000488c88>] generic_file_aio_write+0x44/0xc8 1 lock held by agetty/1630: #0: (&tty->atomic_read_lock){--..}, at: [<00000000005ead9c>] n_tty_read+0x20c/0x648 1 lock held by agetty/1632: #0: (&tty->atomic_read_lock){--..}, at: [<00000000005ead9c>] n_tty_read+0x20c/0x648 1 lock held by agetty/1634: #0: (&tty->atomic_read_lock){--..}, at: [<00000000005ead9c>] n_tty_read+0x20c/0x648 1 lock held by agetty/1636: #0: (&tty->atomic_read_lock){--..}, at: [<00000000005ead9c>] n_tty_read+0x20c/0x648 1 lock held by agetty/1638: #0: (&tty->atomic_read_lock){--..}, at: [<00000000005ead9c>] n_tty_read+0x20c/0x648 1 lock held by agetty/1640: #0: (&tty->atomic_read_lock){--..}, at: [<00000000005ead9c>] n_tty_read+0x20c/0x648 2 locks held by bash/1671: #0: (sysrq_key_table_lock){....}, at: [<00000000005fc700>] __handle_sysrq+0x14/0x164 #1: (tasklist_lock){..--}, at: [<0000000000471510>] debug_show_all_locks+0x5c/0x1a8 1 lock held by bash/1676: #0: (&tty->atomic_read_lock){--..}, at: [<00000000005ead9c>] n_tty_read+0x20c/0x648 2 locks held by touch/1317: #0: (&sb->s_type->i_mutex_key#3){--..}, at: [<00000000004d2170>] utimes_common+0x164/0x194 #1: (jbd_handle){--..}, at: [<000000000053d788>] journal_start+0xe8/0x118 1 lock held by bash/1333: #0: (&p->cred_exec_mutex){--..}, at: [<00000000004e61c0>] compat_do_execve+0x38/0x194 1 lock held by init/1336: #0: (&sb->s_type->i_mutex_key#3){--..}, at: [<0000000000488c88>] generic_file_aio_write+0x44/0xc8 ============================================= SysRq : Show Blocked State task PC stack pid father pdflush D 00000000004878c8 0 163 2 Call Trace: [00000000006d9f74] io_schedule+0x20/0x3c [00000000004878c8] sync_page+0x84/0x94 [00000000006da2f8] __wait_on_bit+0x64/0xc0 [0000000000487b20] wait_on_page_bit+0x8c/0x9c [00000000004880bc] wait_on_page_writeback_range+0x68/0x124 [00000000004881a4] filemap_fdatawait+0x2c/0x40 [000000000048844c] filemap_write_and_wait+0x38/0x50 [00000000004d41fc] sync_blockdev+0x1c/0x30 [00000000004cf168] __sync_inodes+0x7c/0xd4 [00000000004cf1d8] sync_inodes+0x18/0x40 [00000000004d1f88] do_sync+0x1c/0x7c [000000000048ff64] pdflush+0x110/0x1c0 [00000000004655e4] kthread+0x48/0x7c [00000000004271a0] kernel_thread+0x3c/0x54 [0000000000465450] kthreadd+0xe0/0x184 pdflush D 00000000004878c8 0 164 2 Call Trace: [00000000006d9f74] io_schedule+0x20/0x3c [00000000004878c8] sync_page+0x84/0x94 [00000000006da2f8] __wait_on_bit+0x64/0xc0 [0000000000487b20] wait_on_page_bit+0x8c/0x9c [00000000004880bc] wait_on_page_writeback_range+0x68/0x124 [00000000004881a4] filemap_fdatawait+0x2c/0x40 [000000000048844c] filemap_write_and_wait+0x38/0x50 [00000000004d41fc] sync_blockdev+0x1c/0x30 [00000000004cf168] __sync_inodes+0x7c/0xd4 [00000000004cf1d8] sync_inodes+0x18/0x40 [00000000004d1f88] do_sync+0x1c/0x7c [000000000048ff64] pdflush+0x110/0x1c0 [00000000004655e4] kthread+0x48/0x7c [00000000004271a0] kernel_thread+0x3c/0x54 [0000000000465450] kthreadd+0xe0/0x184 kjournald D 00000000005443d4 0 405 2 Call Trace: [000000000053f394] journal_commit_transaction+0x1c4/0x1648 [00000000005443d4] kjournald+0x134/0x2fc [00000000004655e4] kthread+0x48/0x7c [00000000004271a0] kernel_thread+0x3c/0x54 [0000000000465450] kthreadd+0xe0/0x184 metalog D 000000000053d758 0 1413 1 Call Trace: [000000000053d4b0] start_this_handle+0x2b0/0x4a0 [000000000053d758] journal_start+0xb8/0x118 [00000000005117c0] ext3_journal_start_sb+0x54/0x64 [000000000050b09c] ext3_dirty_inode+0x18/0xc8 [00000000004cf318] __mark_inode_dirty+0x2c/0x180 [00000000004c6674] file_update_time+0xe0/0x118 [0000000000488b44] __generic_file_aio_write_nolock+0x26c/0x36c [0000000000488c9c] generic_file_aio_write+0x58/0xc8 [0000000000505a30] ext3_file_write+0x28/0xd8 [00000000004b2d88] do_sync_write+0x90/0xe0 [00000000004b35e8] vfs_write+0x7c/0x118 [00000000004b3a18] sys_write+0x38/0x68 [0000000000406154] linux_sparc_syscall32+0x34/0x40 touch D 00000000004d4400 0 1317 1 Call Trace: [00000000006d9f74] io_schedule+0x20/0x3c [00000000004d4400] sync_buffer+0x4c/0x5c [00000000006da1d8] __wait_on_bit_lock+0x64/0xa4 [00000000006da280] out_of_line_wait_on_bit_lock+0x68/0x7c [00000000004d474c] __lock_buffer+0x34/0x44 [000000000053cacc] do_get_write_access+0xd4/0x65c [000000000053d078] journal_get_write_access+0x24/0x40 [0000000000516a08] __ext3_journal_get_write_access+0x14/0x50 [0000000000507db4] ext3_reserve_inode_write+0x40/0x88 [0000000000507e28] ext3_mark_inode_dirty+0x2c/0x5c [000000000050b12c] ext3_dirty_inode+0xa8/0xc8 [00000000004cf318] __mark_inode_dirty+0x2c/0x180 [00000000004c6b6c] inode_setattr+0x120/0x138 [000000000050b034] ext3_setattr+0x174/0x1c4 [00000000004c6d4c] notify_change+0x1c8/0x328 [00000000004d217c] utimes_common+0x170/0x194 init D 000000000053d758 0 1336 1 Call Trace: [000000000053d4b0] start_this_handle+0x2b0/0x4a0 [000000000053d758] journal_start+0xb8/0x118 [00000000005117c0] ext3_journal_start_sb+0x54/0x64 [000000000050b09c] ext3_dirty_inode+0x18/0xc8 [00000000004cf318] __mark_inode_dirty+0x2c/0x180 [00000000004c6674] file_update_time+0xe0/0x118 [0000000000488b44] __generic_file_aio_write_nolock+0x26c/0x36c [0000000000488c9c] generic_file_aio_write+0x58/0xc8 [0000000000505a30] ext3_file_write+0x28/0xd8 [00000000004b2d88] do_sync_write+0x90/0xe0 [00000000004b35e8] vfs_write+0x7c/0x118 [00000000004b3a18] sys_write+0x38/0x68 [0000000000406154] linux_sparc_syscall32+0x34/0x40 -- 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/