From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx155.postini.com [74.125.245.155]) by kanga.kvack.org (Postfix) with SMTP id B6E7C6B002B for ; Mon, 17 Dec 2012 03:14:05 -0500 (EST) Date: Mon, 17 Dec 2012 10:14:47 +0200 From: "Kirill A. Shutemov" Subject: BUG: MAX_LOCK_DEPTH too low! Message-ID: <20121217081447.GB24173@shutemov.name> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: Marcelo Tosatti , Gleb Natapov Cc: kvm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Hi, I've got this BUG on up-to-date Linus tree (aed606e): [ 1145.439071] BUG: MAX_LOCK_DEPTH too low! [ 1145.439077] turning off the locking correctness validator. [ 1145.439081] Pid: 4619, comm: kvm Not tainted 3.7.0-08682-gaed606e-dirty = #166 [ 1145.439084] Call Trace: [ 1145.439094] [] __lock_acquire.isra.24+0xc54/0xe10 [ 1145.439099] [] lock_acquire+0x93/0x140 [ 1145.439106] [] ? mm_take_all_locks+0x148/0x1b0 [ 1145.439111] [] down_write+0x49/0x90 [ 1145.439115] [] ? mm_take_all_locks+0x148/0x1b0 [ 1145.439119] [] mm_take_all_locks+0x148/0x1b0 [ 1145.439124] [] ? do_mmu_notifier_register+0x153/0x180 [ 1145.439128] [] do_mmu_notifier_register+0x7f/0x180 [ 1145.439132] [] mmu_notifier_register+0x13/0x20 [ 1145.439138] [] kvm_dev_ioctl+0x3e6/0x520 [ 1145.439142] [] ? debug_check_no_locks_freed+0xd8/0x170 [ 1145.439148] [] do_vfs_ioctl+0x97/0x540 [ 1145.439152] [] sys_ioctl+0x91/0xb0 [ 1145.439158] [] ? trace_hardirqs_on_thunk+0x3a/0x3f [ 1145.439163] [] system_call_fastpath+0x1a/0x1f --=20 Kirill A. Shutemov -- 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