Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751727AbdDHFBx (ORCPT ); Sat, 8 Apr 2017 01:01:53 -0400 Received: from mout.gmx.net ([212.227.15.19]:58117 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750986AbdDHFBp (ORCPT ); Sat, 8 Apr 2017 01:01:45 -0400 Message-ID: <1491627694.4479.21.camel@gmx.de> Subject: Re: Random guest crashes since 5c34d002dcc7 ("virtio_pci: use shared interrupts for virtqueues") From: Mike Galbraith To: "Michael S. Tsirkin" Cc: Christoph Hellwig , Thorsten Leemhuis , virtio-dev@lists.oasis-open.org, Linux Kernel Mailing List , rjones@redhat.com Date: Sat, 08 Apr 2017 07:01:34 +0200 In-Reply-To: <20170407215510-mutt-send-email-mst@kernel.org> References: <20170405062934.GA26528@lst.de> <20170406003349-mutt-send-email-mst@kernel.org> <1491544999.5501.7.camel@gmx.de> <20170407090354-mutt-send-email-mst@kernel.org> <1491547457.5501.10.camel@gmx.de> <1491548751.5501.12.camel@gmx.de> <1491549722.5501.13.camel@gmx.de> <20170407161641-mutt-send-email-mst@kernel.org> <20170407163437-mutt-send-email-mst@kernel.org> <1491575393.3341.0.camel@gmx.de> <20170407215510-mutt-send-email-mst@kernel.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.16.5 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:tB4hxKIY1P30OOsdlRw8ogTg/UCcIV947ok5UQ+LA9UAvGNgfsf FyB9AhW3tPYj61L+Mf5TgPtMDRxuL2qPtxHBc+Cg0EzUsxF58FLnbLlij/LE1qLWoUhrCTN RINLyv7dyNM35yDlkg8IY+aMAlf+5Y+4xFyX58Bl8gaKyMQzwpojFYrzinPFb5Q8owrKHWa dGiUGEQ1wafG0WxhETkBg== X-UI-Out-Filterresults: notjunk:1;V01:K0:ndvMgp13nco=:gN6o9rX0CnY5++Rjmfc0Fn WSo0eTyl7PYKLllFMzdo7VukAWxkjUWx7QWqE2Te3rtajIeFW8jccnZ0I9cqgrrE7KsWoUm3m JBKcZ1j7bvgJZT6j9FkXAJ6anBZYcMDXQ1N94e4ewqkI1JwwfxZ/FnssdtyqDjBP5lX83zP0g KrEpcYy7SIK04Cv0j21TDzp3LrhAcVfBg7iGgOEVnRP3947LnS3fz6yVhwTMkYBYJlOw31qbe q5VXkVTuup9m1YnAY3dVDzXV1K60P7Xa9rp/lBoSoMY/gPifinIt3VKL/tJsDRQKstdHDu4be IyJEZTJ5Frj8b0zrv418EBpj6DDCbCZ6+dU7bakgd17laWd7Du/IuRBG/2FRKkBEalru0tL4u Xwbqt+8oRGuww4MRHMSyF1vdKr208hMVlWvUaSZghesAF6GAZxaR9pN1nDIpU80PX2OZguTfM vGamLV/4lN7haMKtgCb815xo0d9zRHUVwxe5xX425Tqq1DtpCPH0H2oHJ+ss/7kdfQ6E1qMz6 UmT09QTXLMfUYPh6tAU7LdttWUhPMwkGcK6lunfoAh+Y1g+X5WIlYERZ1jwKlyPPxWjf8a8nO LKdduZhUqrYnhD/NSOTcGdcmVhGChNYwGyN7fZDf+5Jzp8tfmgXqCHU+Ja1M6kTwHLnAwbgKr Q4czaHcm0tzexIlFiZf9ahyUzUJ0o1SfN9qRVgS8fo64hGdYPemlur8B3uYD8XfyvNJscmyk7 7Za1vLGxWindU1hs9sbb2ofOErcI11U0IBHhxCVkKTXAkUSYlNhWsJ82fdeLseIffg3PM422+ RBcYxMw Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1488 Lines: 32 On Fri, 2017-04-07 at 21:56 +0300, Michael S. Tsirkin wrote: > OK. test3 and test4 are now pushed: test3 should fix your hang, > test4 is trying to fix a crash reported independently. test3 does not fix the post hibernate hang business that I can easily reproduce, those are NFS, and at least as old as 4.4. Host/guest, dunno, put 4.4 on both, guest hangs intermittently. [] __rpc_wait_for_completion_task+0x30/0x30 [sunrpc] [] rpc_wait_bit_killable+0x1e/0xb0 [sunrpc] [] __rpc_wait_for_completion_task+0x30/0x30 [sunrpc] [] autoremove_wake_function+0x50/0x50 [] call_decode+0x850/0x850 [sunrpc] [] call_decode+0x850/0x850 [sunrpc] [] __rpc_execute+0x14e/0x440 [sunrpc] [] ktime_get+0x35/0xa0 [] rpc_run_task+0x120/0x170 [sunrpc] [] nfs4_call_sync_sequence+0x56/0x80 [nfsv4] [] _nfs4_proc_getattr+0xb0/0xc0 [nfsv4] [] path_lookupat+0xd2/0x100 [] nfs4_proc_getattr+0x5c/0xe0 [nfsv4] [] __nfs_revalidate_inode+0xa0/0x300 [nfs] [] nfs_getattr+0x95/0x250 [nfs] [] vfs_statx+0x7b/0xc0 [] SYSC_newstat+0x20/0x40 [] entry_SYSCALL_64_fastpath+0x1a/0xa9 [] 0xffffffffffffffff I noted no _other_ misbehavior in either kernel, w/wo threadirqs. -Mike