From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id 020EF60021B for ; Wed, 9 Dec 2009 05:38:41 -0500 (EST) Received: by qyk14 with SMTP id 14so2767814qyk.11 for ; Wed, 09 Dec 2009 02:38:40 -0800 (PST) MIME-Version: 1.0 Date: Wed, 9 Dec 2009 18:38:40 +0800 Message-ID: <2375c9f90912090238u7487019eq2458210aac4b602@mail.gmail.com> Subject: An mm bug in today's 2.6.32 git tree From: =?UTF-8?Q?Am=C3=A9rico_Wang?= Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org To: linux-mm@kvack.org Cc: LKML List-ID: Hi, mm experts, I met the following bug in the kernel from today's git tree, accidentally. I don't know how to reproduce it, just saw it twice when doing different work. Machine is x86_64. Is this bug known? Please feel free to let me know if you need more info. Thanks! ---------------- swap_free: Bad swap offset entry 09003c00 BUG: Bad page map in process vim pte:1200780000 pmd:22f221067 addr:000000319ce0f000 vm_flags:08000075 anon_vma:(null) mapping:ffff88022efa8848 index:f vma->vm_ops->fault: filemap_fault+0x0/0x593 vma->vm_file->f_op->mmap: generic_file_mmap+0x0/0x63 Pid: 659, comm: vim Tainted: G B 2.6.32 #55 Call Trace: [] ? print_bad_pte+0x29b/0x2c2 [] ? unmap_vmas+0x8bc/0xbd5 [] ? exit_mmap+0x13b/0x232 [] ? mmput+0x57/0x123 [] ? exit_mm+0x1af/0x1c1 [] ? up_read+0x10/0x19 [] ? do_exit+0x2f2/0xa61 [] ? up_read+0x10/0x19 [] ? sys_exit_group+0x0/0x24 [] ? sys_exit_group+0x19/0x24 [] ? system_call_fastpath+0x16/0x1b -- 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/ . Don't email: email@kvack.org