From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Kroah-Hartman Subject: Re: [PATCH 3.18 04/57] vm: add VM_FAULT_SIGSEGV handling support Date: Wed, 11 Feb 2015 11:43:07 +0800 Message-ID: <20150211034307.GA2932@kroah.com> References: <20150203231211.486950145@linuxfoundation.org> <20150203231212.223123220@linuxfoundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org To: Konstantin Khlebnikov Cc: Linux Kernel Mailing List , Stable , Jan Engelhardt , linux-arch@vger.kernel.org, Linus Torvalds , "linux-mm@kvack.org" List-Id: linux-arch.vger.kernel.org On Tue, Feb 10, 2015 at 12:22:41PM +0400, Konstantin Khlebnikov wrote: > I've found regression: > > [ 257.139907] ================================================ > [ 257.139909] [ BUG: lock held when returning to user space! ] > [ 257.139912] 3.18.6-debug+ #161 Tainted: G U > [ 257.139914] ------------------------------------------------ > [ 257.139916] python/22843 is leaving the kernel with locks still held! > [ 257.139918] 1 lock held by python/22843: > [ 257.139920] #0: (&mm->mmap_sem){++++++}, at: [] > __do_page_fault+0x162/0x570 > > upstream commit 7fb08eca45270d0ae86e1ad9d39c40b7a55d0190 must be backported too. Ah, nice, I missed that one. How did you test this? thanks, greg k-h -- 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:53276 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751235AbbBKDnR (ORCPT ); Tue, 10 Feb 2015 22:43:17 -0500 Date: Wed, 11 Feb 2015 11:43:07 +0800 From: Greg Kroah-Hartman Subject: Re: [PATCH 3.18 04/57] vm: add VM_FAULT_SIGSEGV handling support Message-ID: <20150211034307.GA2932@kroah.com> References: <20150203231211.486950145@linuxfoundation.org> <20150203231212.223123220@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-arch-owner@vger.kernel.org List-ID: To: Konstantin Khlebnikov Cc: Linux Kernel Mailing List , Stable , Jan Engelhardt , linux-arch@vger.kernel.org, Linus Torvalds , "linux-mm@kvack.org" Message-ID: <20150211034307.LnnOhIpcEfe4FANjy0Eml7tx-rmKv-HA2m0vT-yXqnU@z> On Tue, Feb 10, 2015 at 12:22:41PM +0400, Konstantin Khlebnikov wrote: > I've found regression: > > [ 257.139907] ================================================ > [ 257.139909] [ BUG: lock held when returning to user space! ] > [ 257.139912] 3.18.6-debug+ #161 Tainted: G U > [ 257.139914] ------------------------------------------------ > [ 257.139916] python/22843 is leaving the kernel with locks still held! > [ 257.139918] 1 lock held by python/22843: > [ 257.139920] #0: (&mm->mmap_sem){++++++}, at: [] > __do_page_fault+0x162/0x570 > > upstream commit 7fb08eca45270d0ae86e1ad9d39c40b7a55d0190 must be backported too. Ah, nice, I missed that one. How did you test this? thanks, greg k-h