From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.palepurple.co.uk ([89.16.183.188]:55089 "EHLO mail.palepurple.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751053AbcBGG5Y (ORCPT ); Sun, 7 Feb 2016 01:57:24 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.palepurple.co.uk (Postfix) with ESMTP id C9E8481E4 for ; Sun, 7 Feb 2016 06:57:21 +0000 (GMT) Received: from mail.palepurple.co.uk ([127.0.0.1]) by localhost (mail.palepurple.co.uk [127.0.0.50]) (amavisd-new, port 10024) with ESMTP id TZpVK-WswO7q for ; Sun, 7 Feb 2016 06:57:11 +0000 (GMT) Received: from mabel.local (5ec3d602.skybroadband.com [94.195.214.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: david@codepoets.co.uk) by mail.palepurple.co.uk (Postfix) with ESMTPSA id D4FCD8076 for ; Sun, 7 Feb 2016 06:57:10 +0000 (GMT) To: "linux-btrfs@vger.kernel.org" From: David Goodwin Subject: kernel 4.1.15 balance => oops. out of memory. Message-ID: <56B6EAC5.4040206@codepoets.co.uk> Date: Sun, 7 Feb 2016 06:57:09 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: kernel 4.1.15 balancing a fs led to this oops. after a reboot, the balance resumed without problem. presumably there wasn't enough real memory available David ------------[ cut here ]------------ WARNING: CPU: 1 PID: 16560 at fs/btrfs/super.c:260 __btrfs_abort_transaction+0x4b/0x120 [btrfs]() BTRFS: Transaction aborted (error -12) Modules linked in: ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs libcrc32c dm_mod veth xt_multiport iptable_filter ip_tables x_tables nfsd auth_rpcgss oid_registry nfs_acl nfs lockd grace fscache sunrpc bridge stp llc ip_gre ip_tunnel gre fuse crct10dif_pclmul crc32_pclmul ppdev cirrus aesni_intel snd_pcsp aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd_pcm ttm snd_timer evdev psmouse snd soundcore serio_raw drm_kms_helper parport_pc 8250_fintek parport drm i2c_piix4 i2c_core acpi_cpufreq processor thermal_sys button ext4 crc16 mbcache jbd2 btrfs xor raid6_pq ata_generic xen_blkfront crc32c_intel floppy ata_piix libata scsi_mod ixgbevf CPU: 1 PID: 16560 Comm: apache2 Not tainted 4.1.15-dg1 #1 Hardware name: Xen HVM domU, BIOS 4.2.amazon 12/07/2015 0000000000000000 ffffffffa01a1af2 ffffffff81573596 ffff880029f13b08 ffffffff81071221 ffff880139897388 00000000fffffff4 ffff88014ba71000 ffffffffa01a061c 0000000000001854 ffffffff8107129a ffffffffa01a46e8 Call Trace: [] ? dump_stack+0x40/0x50 [] ? warn_slowpath_common+0x81/0xb0 [] ? warn_slowpath_fmt+0x4a/0x50 [] ? __btrfs_abort_transaction+0x4b/0x120 [btrfs] [] ? btrfs_add_link+0x2ea/0x350 [btrfs] [] ? btrfs_create+0x1a2/0x1e0 [btrfs] [] ? generic_permission+0x13e/0x1a0 [] ? vfs_create+0xc4/0x130 [] ? do_last+0x1154/0x1210 [] ? __init_waitqueue_head+0x1/0x20 [] ? path_openat+0x83/0x600 [] ? do_set_pte+0x9e/0xd0 [] ? filemap_map_pages+0x23e/0x250 [] ? do_filp_open+0x30/0xa0 [] ? __alloc_fd+0x9f/0x130 [] ? do_sys_open+0x12a/0x220 [] ? system_call_fastpath+0x16/0x75 ---[ end trace 388b9f3bfbb5b4e9 ]--- BTRFS: error (device xvdf) in btrfs_add_link:6228: errno=-12 Out of memory BTRFS info (device xvdf): forced readonly