From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752954Ab3ABQQK (ORCPT ); Wed, 2 Jan 2013 11:16:10 -0500 Received: from mx1.redhat.com ([209.132.183.28]:47357 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752793Ab3ABQQJ (ORCPT ); Wed, 2 Jan 2013 11:16:09 -0500 Date: Wed, 2 Jan 2013 10:35:01 -0500 From: Dave Jones To: Linux Kernel Cc: viro@zeniv.linux.org.uk Subject: order 4 alloc failures in security_context_to_sid_core Message-ID: <20130102153501.GB25940@redhat.com> Mail-Followup-To: Dave Jones , Linux Kernel , viro@zeniv.linux.org.uk MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Along the same lines as 779302e67835fe9a6b74327e54969ba59cb3478a, xattrs can cause big allocations, which are likely to fail under memory pressure.. [20539.081122] trinity-child3: page allocation failure: order:4, mode:0x1040d0 [20539.090405] Pid: 27617, comm: trinity-child3 Not tainted 3.8.0-rc1+ #43 [20539.097883] Call Trace: [20539.105032] [] warn_alloc_failed+0xec/0x140 [20539.112549] [] ? trace_hardirqs_on+0xd/0x10 [20539.119609] [] ? on_each_cpu_mask+0x70/0xd0 [20539.127089] [] __alloc_pages_nodemask+0x91e/0xba0 [20539.134380] [] alloc_pages_current+0xb8/0x180 [20539.141803] [] __get_free_pages+0x2a/0x80 [20539.149513] [] kmalloc_order_trace+0x3e/0x1a0 [20539.157553] [] ? native_sched_clock+0x26/0x90 [20539.164898] [] __kmalloc+0x2f5/0x3a0 [20539.172288] [] security_context_to_sid_core+0x86/0x280 [20539.179909] [] ? __const_udelay+0x28/0x30 [20539.187356] [] ? avc_has_perm_flags+0x178/0x2b0 [20539.194911] [] ? avc_has_perm_flags+0x29/0x2b0 [20539.202883] [] ? get_lock_stats+0x22/0x70 [20539.211117] [] security_context_to_sid+0x19/0x20 [20539.218729] [] selinux_inode_setxattr+0xf0/0x220 [20539.226502] [] ? vfs_setxattr+0x71/0xc0 [20539.233517] [] ? vfs_setxattr+0x71/0xc0 [20539.240734] [] security_inode_setxattr+0x20/0x30 [20539.248184] [] vfs_setxattr+0x86/0xc0 [20539.255357] [] setxattr+0x12e/0x1d0 [20539.262691] [] ? __percpu_counter_add+0x75/0xc0 [20539.270289] [] ? __sb_start_write+0x103/0x1c0 [20539.277927] [] ? mnt_want_write_file+0x28/0x60 [20539.285396] [] ? do_setitimer+0x1c4/0x300 [20539.292986] [] ? mnt_want_write_file+0x28/0x60 [20539.300219] [] ? __mnt_want_write+0x62/0xa0 [20539.307259] [] sys_fsetxattr+0xbe/0xf0 [20539.314184] [] system_call_fastpath+0x16/0x1b Dave