From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DEDB4C4332F for ; Sat, 15 Oct 2022 19:51:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229704AbiJOTvH (ORCPT ); Sat, 15 Oct 2022 15:51:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229660AbiJOTvF (ORCPT ); Sat, 15 Oct 2022 15:51:05 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF67232AA1 for ; Sat, 15 Oct 2022 12:51:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1665863460; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=3dmRoCAbvHyB4s1yUnRmBVS7aeUXJ2qzFIadydzCF9Q=; b=hsk65+es2cF9qwbk8nIOfWbGcmPqIr7Blo7BEybT38iUfZ6llSPhIosoOk4/KSJt9lTII0 ryhGxr4n19XKqapuxnJ4tbWB5E78Nh5hGtN9qwpydo25GwHFxZqQKFyNufWy/WpnhLcxk3 R7SiHtaS9+VLi9fZtqdasFEF1iN9Ly4= Received: from mail-ed1-f70.google.com (mail-ed1-f70.google.com [209.85.208.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-247-mKgJwryvPa2uFxsRr8psSQ-1; Sat, 15 Oct 2022 15:50:59 -0400 X-MC-Unique: mKgJwryvPa2uFxsRr8psSQ-1 Received: by mail-ed1-f70.google.com with SMTP id c9-20020a05640227c900b0045d4a88c750so1747276ede.12 for ; Sat, 15 Oct 2022 12:50:59 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=3dmRoCAbvHyB4s1yUnRmBVS7aeUXJ2qzFIadydzCF9Q=; b=OIuNyGGeKAbY4vFZALt/7mXebUgArqbiJcSTiP/gpHxpzleyMxcQly+h71r1l4mfcf OUEVnCBLc2ftDKdqLapALvUkXC/isXZp2A52x4ljqHqHrKZnZW/jfSif/F56Na1ZScx7 IkV2+Fm3x/TM5kTiAX8I6i7XK+uYoi31ZVeLOR8mn+tXpBZ316WvsP+bTx/0B1ZZTMRP ZSI61Kz+9MwH/ZPwlaAUdbN3px/12rK1xX0G2Oc8fqBcbI6FF3KZbGLzWI+Yl6zKqhYv wcP05/8gfCFD4SeqL/MGY+ywq3ljEJYAsAiMPiey2yLgpQUhozHHrZ/cwfgrUj6vQwPM wMlw== X-Gm-Message-State: ACrzQf3ll/2jnKeJvcGBlai42AjlBw/MPDhzcGm3C+CRNxrGjeCTVEPV /aBO7p5/rZNq0IOiMdK2pPrdDI1vL+EefODocn1GlXY+f7n3/5RPBtJe6OrfkUocqy5gtswwWi8 L3975OQASAOmM8yMKyNXs/7TR X-Received: by 2002:a17:907:a073:b0:78d:51c4:5b8c with SMTP id ia19-20020a170907a07300b0078d51c45b8cmr2977986ejc.355.1665863458191; Sat, 15 Oct 2022 12:50:58 -0700 (PDT) X-Google-Smtp-Source: AMsMyM4zlYvw9Wjs/reSHlqd3kKSBJ/ieaWY3Yf6XVCWg5t5vNB1U7SZKx76+1tHWkWJzFWg+DDkuQ== X-Received: by 2002:a17:907:a073:b0:78d:51c4:5b8c with SMTP id ia19-20020a170907a07300b0078d51c45b8cmr2977972ejc.355.1665863457880; Sat, 15 Oct 2022 12:50:57 -0700 (PDT) Received: from redhat.com ([2.54.171.110]) by smtp.gmail.com with ESMTPSA id m3-20020a17090679c300b0077909095acasm3564039ejo.143.2022.10.15.12.50.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 15 Oct 2022 12:50:57 -0700 (PDT) Date: Sat, 15 Oct 2022 15:50:53 -0400 From: "Michael S. Tsirkin" To: syzbot Cc: ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, hawk@kernel.org, jasowang@redhat.com, john.fastabend@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, virtualization@lists.linux-foundation.org Subject: Re: [syzbot] net boot error: WARNING in cpumask_next_wrap Message-ID: <20221015154817-mutt-send-email-mst@kernel.org> References: <000000000000f4b06105eb17a6c8@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000000000000f4b06105eb17a6c8@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Oct 15, 2022 at 12:21:41PM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: a1b6b102df03 Merge branch 'phylink_set_mac_pm' > git tree: net > console output: https://syzkaller.appspot.com/x/log.txt?x=179af0c2880000 > kernel config: https://syzkaller.appspot.com/x/.config?x=85495c44a2c25446 > dashboard link: https://syzkaller.appspot.com/bug?extid=4d0c5794bff07852726c > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/d67c9cef7c77/disk-a1b6b102.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/708d1f638584/vmlinux-a1b6b102.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+4d0c5794bff07852726c@syzkaller.appspotmail.com > > ACPI: button: Sleep Button [SLPF] > ACPI: \_SB_.LNKC: Enabled at IRQ 11 > virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver > ACPI: \_SB_.LNKD: Enabled at IRQ 10 > virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver > ACPI: \_SB_.LNKB: Enabled at IRQ 10 > virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver > virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver > N_HDLC line discipline registered with maxframe=4096 > Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled > 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A > 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A > 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A > 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A > Non-volatile memory driver v1.3 > Linux agpgart interface v0.103 > ACPI: bus type drm_connector registered > [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 > [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 > Console: switching to colour frame buffer device 128x48 > platform vkms: [drm] fb0: vkmsdrmfb frame buffer device > usbcore: registered new interface driver udl > brd: module loaded > loop: module loaded > zram: Added device: zram0 > null_blk: disk nullb0 created > null_blk: module loaded > Guest personality initialized and is inactive > VMCI host device registered (name=vmci, major=10, minor=119) > Initialized host personality > usbcore: registered new interface driver rtsx_usb > usbcore: registered new interface driver viperboard > usbcore: registered new interface driver dln2 > usbcore: registered new interface driver pn533_usb > nfcsim 0.2 initialized > usbcore: registered new interface driver port100 > usbcore: registered new interface driver nfcmrvl > Loading iSCSI transport class v2.0-870. > scsi host0: Virtio SCSI HBA > st: Version 20160209, fixed bufsize 32768, s/g segs 256 > Rounding down aligned max_sectors from 4294967295 to 4294967288 > db_root: cannot open: /etc/target > slram: not enough parameters. > ftl_cs: FTL header not found. > wireguard: WireGuard 1.0.0 loaded. See www.wireguard.com for information. > wireguard: Copyright (C) 2015-2019 Jason A. Donenfeld . All Rights Reserved. > eql: Equalizer2002: Simon Janes (simon@ncm.com) and David S. Miller (davem@redhat.com) > MACsec IEEE 802.1AE > tun: Universal TUN/TAP device driver, 1.6 > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 1 at include/linux/cpumask.h:110 cpu_max_bits_warn include/linux/cpumask.h:110 [inline] > WARNING: CPU: 0 PID: 1 at include/linux/cpumask.h:110 cpumask_check include/linux/cpumask.h:117 [inline] > WARNING: CPU: 0 PID: 1 at include/linux/cpumask.h:110 cpumask_next include/linux/cpumask.h:178 [inline] > WARNING: CPU: 0 PID: 1 at include/linux/cpumask.h:110 cpumask_next_wrap+0x139/0x1d0 lib/cpumask.c:27 > Modules linked in: > CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.0.0-syzkaller-11847-ga1b6b102df03 #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 > RIP: 0010:cpu_max_bits_warn include/linux/cpumask.h:110 [inline] > RIP: 0010:cpumask_check include/linux/cpumask.h:117 [inline] > RIP: 0010:cpumask_next include/linux/cpumask.h:178 [inline] > RIP: 0010:cpumask_next_wrap+0x139/0x1d0 lib/cpumask.c:27 > Code: df e8 8b 4a 3d f8 39 eb 77 64 e8 32 4e 3d f8 41 8d 6c 24 01 89 de 89 ef e8 74 4a 3d f8 39 dd 0f 82 54 ff ff ff e8 17 4e 3d f8 <0f> 0b e9 48 ff ff ff e8 0b 4e 3d f8 48 c7 c2 00 02 e2 8d 48 b8 00 > RSP: 0000:ffffc90000067920 EFLAGS: 00010293 > RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000 > RDX: ffff88813fe50000 RSI: ffffffff893f1c59 RDI: 0000000000000004 > RBP: 0000000000000002 R08: 0000000000000004 R09: 0000000000000002 > R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000001 > R13: 0000000000000000 R14: 0000000000000002 R15: ffffffff8de20010 > FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffff88823ffff000 CR3: 000000000bc8e000 CR4: 00000000003506f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > > virtnet_set_affinity+0x35a/0x750 drivers/net/virtio_net.c:2303 > init_vqs drivers/net/virtio_net.c:3581 [inline] > init_vqs drivers/net/virtio_net.c:3567 [inline] > virtnet_probe+0x12ae/0x31e0 drivers/net/virtio_net.c:3884 > virtio_dev_probe+0x577/0x870 drivers/virtio/virtio.c:305 > call_driver_probe drivers/base/dd.c:560 [inline] > really_probe+0x249/0xb90 drivers/base/dd.c:639 > __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 > driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 > __driver_attach+0x1d0/0x550 drivers/base/dd.c:1190 > bus_for_each_dev+0x147/0x1d0 drivers/base/bus.c:301 > bus_add_driver+0x4c9/0x640 drivers/base/bus.c:618 > driver_register+0x220/0x3a0 drivers/base/driver.c:246 > virtio_net_driver_init+0x93/0xd2 drivers/net/virtio_net.c:4090 > do_one_initcall+0x13d/0x780 init/main.c:1303 > do_initcall_level init/main.c:1376 [inline] > do_initcalls init/main.c:1392 [inline] > do_basic_setup init/main.c:1411 [inline] > kernel_init_freeable+0x6ff/0x788 init/main.c:1631 > kernel_init+0x1a/0x1d0 init/main.c:1519 > ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 > #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git net figure out why is syzbot triggering warnings Signed-off-by: Michael S. Tsirkin --- drivers/net/virtio_net.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 7106932c6f88..3c1c16b43bbd 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2295,13 +2295,20 @@ static void virtnet_set_affinity(struct virtnet_info *vi) 0; cpu = cpumask_first(cpu_online_mask); + printk(KERN_ERR "%s +%d : %s cpu %d num %d stride %d stragglers %d\n", + __FILE__, __LINE__, __func__, cpu, num_cpu, stride, stragglers); + for (i = 0; i < vi->curr_queue_pairs; i++) { group_size = stride + (i < stragglers ? 1 : 0); + printk(KERN_ERR "%s +%d : %s vq %d group_size %d", + __FILE__, __LINE__, __func__, i, group_size); for (j = 0; j < group_size; j++) { cpumask_set_cpu(cpu, mask); cpu = cpumask_next_wrap(cpu, cpu_online_mask, nr_cpu_ids, false); + printk(KERN_ERR "%s +%d : %s groupindex %d cpu %d", + __FILE__, __LINE__, __func__, j, group_size); } virtqueue_set_affinity(vi->rq[i].vq, mask); virtqueue_set_affinity(vi->sq[i].vq, mask); -- MST From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C5FD8C433FE for ; Sun, 16 Oct 2022 07:36:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229726AbiJPHg0 (ORCPT ); Sun, 16 Oct 2022 03:36:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43406 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229481AbiJPHgX (ORCPT ); Sun, 16 Oct 2022 03:36:23 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8A23B36856 for ; Sun, 16 Oct 2022 00:36:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1665905780; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=mi6paNxUhZc8wCZTNMWuTKiyJWtsArsQ1TaS5bk0tCs=; b=DvNhSHiwPdQJ02utuE/GLS6PQSNF/Rbkf/OT5VfX42CCQWHKWeXZwBfsP/qhzd28S/Wbro 2FmHXKjKiHi/LprHtFrp5DhmrXlFkh1uwWycE3YvsRJXik+lMgU14rayBWKMz1KMlmiN2B wNtKvGKcTMxKUdnwyoR8dYQMKYLnnfU= Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-638-fcT6c0eJPgGE6bVsuuc2Jw-1; Sun, 16 Oct 2022 03:36:19 -0400 X-MC-Unique: fcT6c0eJPgGE6bVsuuc2Jw-1 Received: by mail-wm1-f71.google.com with SMTP id az35-20020a05600c602300b003c5273b79fdso7488587wmb.3 for ; Sun, 16 Oct 2022 00:36:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=mi6paNxUhZc8wCZTNMWuTKiyJWtsArsQ1TaS5bk0tCs=; b=mEEGwCuxlmmJavpA2bHvogeTsOP9hGeJWjLXdt3ioBQURAuvO2CwSI6gHNmv6fJ/AB 0u1zPlpo+BwDpymPlgY0X/ABr/UVwVyHBL3aNAH19HPTIfOyU/b17XgylTYWsO3m9QsY QjTP50z5tjRO+rG/FzBwg9OKla2hfMEEsbbgCxkSHCWTCiwBqf5rbaK3rIF3h0a5nPLs nlAVkU5oHAnjHxXPhzSbwkVJ5mMGhXYLbN+LLhYT7aKErL235c44kFkUn6r14E2422kI sfwzAQgd7Sv2heEEEXgv5vO6qsmyPo7DMqE99Iy8n0+qdVu4Jw/OOt2XZ56SFPHCOkxW CZJA== X-Gm-Message-State: ACrzQf0rNSpjewG4CW7WEnOeFAiNbW/xQr9Vkkjx8gHlCet9UQ/9eTDv W4hFYyaKz8VIBgCPWh/Li5rLZ8k3atiVTrni9Z/Yl6fgaBfKu+d8kx6UVcsSQGyfoIiA8d2Vz19 ds1nPJcgOiTHKl7NfY1MPI3H3 X-Received: by 2002:a5d:5612:0:b0:22e:35b7:5654 with SMTP id l18-20020a5d5612000000b0022e35b75654mr3177783wrv.651.1665905777918; Sun, 16 Oct 2022 00:36:17 -0700 (PDT) X-Google-Smtp-Source: AMsMyM6L2f7JWrMgCNZU5cQ24fKThZRGdI4bnqhsF6oFbB8HEU6GjHxbSLnDTcA1+Mi3n9Rna76SGQ== X-Received: by 2002:a5d:5612:0:b0:22e:35b7:5654 with SMTP id l18-20020a5d5612000000b0022e35b75654mr3177764wrv.651.1665905777555; Sun, 16 Oct 2022 00:36:17 -0700 (PDT) Received: from redhat.com ([2.54.171.110]) by smtp.gmail.com with ESMTPSA id n4-20020adf8b04000000b00231893bfdc7sm6017053wra.2.2022.10.16.00.36.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 16 Oct 2022 00:36:16 -0700 (PDT) Date: Sun, 16 Oct 2022 03:36:12 -0400 From: "Michael S. Tsirkin" To: syzbot Cc: ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, hawk@kernel.org, jasowang@redhat.com, john.fastabend@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, virtualization@lists.linux-foundation.org Subject: Re: [syzbot] net boot error: WARNING in cpumask_next_wrap Message-ID: <20221015154817-mutt-send-email-mst@kernel.org> References: <000000000000f4b06105eb17a6c8@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000000000000f4b06105eb17a6c8@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Message-ID: <20221016073612.yUtTddwqWs02E8G-fvoCJjQwIlXwDRPL8qqr6ShMXFI@z> On Sat, Oct 15, 2022 at 12:21:41PM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: a1b6b102df03 Merge branch 'phylink_set_mac_pm' > git tree: net > console output: https://syzkaller.appspot.com/x/log.txt?x=179af0c2880000 > kernel config: https://syzkaller.appspot.com/x/.config?x=85495c44a2c25446 > dashboard link: https://syzkaller.appspot.com/bug?extid=4d0c5794bff07852726c > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/d67c9cef7c77/disk-a1b6b102.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/708d1f638584/vmlinux-a1b6b102.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+4d0c5794bff07852726c@syzkaller.appspotmail.com > > ACPI: button: Sleep Button [SLPF] > ACPI: \_SB_.LNKC: Enabled at IRQ 11 > virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver > ACPI: \_SB_.LNKD: Enabled at IRQ 10 > virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver > ACPI: \_SB_.LNKB: Enabled at IRQ 10 > virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver > virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver > N_HDLC line discipline registered with maxframe=4096 > Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled > 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A > 00:04: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A > 00:05: ttyS2 at I/O 0x3e8 (irq = 6, base_baud = 115200) is a 16550A > 00:06: ttyS3 at I/O 0x2e8 (irq = 7, base_baud = 115200) is a 16550A > Non-volatile memory driver v1.3 > Linux agpgart interface v0.103 > ACPI: bus type drm_connector registered > [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0 > [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1 > Console: switching to colour frame buffer device 128x48 > platform vkms: [drm] fb0: vkmsdrmfb frame buffer device > usbcore: registered new interface driver udl > brd: module loaded > loop: module loaded > zram: Added device: zram0 > null_blk: disk nullb0 created > null_blk: module loaded > Guest personality initialized and is inactive > VMCI host device registered (name=vmci, major=10, minor=119) > Initialized host personality > usbcore: registered new interface driver rtsx_usb > usbcore: registered new interface driver viperboard > usbcore: registered new interface driver dln2 > usbcore: registered new interface driver pn533_usb > nfcsim 0.2 initialized > usbcore: registered new interface driver port100 > usbcore: registered new interface driver nfcmrvl > Loading iSCSI transport class v2.0-870. > scsi host0: Virtio SCSI HBA > st: Version 20160209, fixed bufsize 32768, s/g segs 256 > Rounding down aligned max_sectors from 4294967295 to 4294967288 > db_root: cannot open: /etc/target > slram: not enough parameters. > ftl_cs: FTL header not found. > wireguard: WireGuard 1.0.0 loaded. See www.wireguard.com for information. > wireguard: Copyright (C) 2015-2019 Jason A. Donenfeld . All Rights Reserved. > eql: Equalizer2002: Simon Janes (simon@ncm.com) and David S. Miller (davem@redhat.com) > MACsec IEEE 802.1AE > tun: Universal TUN/TAP device driver, 1.6 > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 1 at include/linux/cpumask.h:110 cpu_max_bits_warn include/linux/cpumask.h:110 [inline] > WARNING: CPU: 0 PID: 1 at include/linux/cpumask.h:110 cpumask_check include/linux/cpumask.h:117 [inline] > WARNING: CPU: 0 PID: 1 at include/linux/cpumask.h:110 cpumask_next include/linux/cpumask.h:178 [inline] > WARNING: CPU: 0 PID: 1 at include/linux/cpumask.h:110 cpumask_next_wrap+0x139/0x1d0 lib/cpumask.c:27 > Modules linked in: > CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.0.0-syzkaller-11847-ga1b6b102df03 #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 > RIP: 0010:cpu_max_bits_warn include/linux/cpumask.h:110 [inline] > RIP: 0010:cpumask_check include/linux/cpumask.h:117 [inline] > RIP: 0010:cpumask_next include/linux/cpumask.h:178 [inline] > RIP: 0010:cpumask_next_wrap+0x139/0x1d0 lib/cpumask.c:27 > Code: df e8 8b 4a 3d f8 39 eb 77 64 e8 32 4e 3d f8 41 8d 6c 24 01 89 de 89 ef e8 74 4a 3d f8 39 dd 0f 82 54 ff ff ff e8 17 4e 3d f8 <0f> 0b e9 48 ff ff ff e8 0b 4e 3d f8 48 c7 c2 00 02 e2 8d 48 b8 00 > RSP: 0000:ffffc90000067920 EFLAGS: 00010293 > RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000 > RDX: ffff88813fe50000 RSI: ffffffff893f1c59 RDI: 0000000000000004 > RBP: 0000000000000002 R08: 0000000000000004 R09: 0000000000000002 > R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000001 > R13: 0000000000000000 R14: 0000000000000002 R15: ffffffff8de20010 > FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffff88823ffff000 CR3: 000000000bc8e000 CR4: 00000000003506f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > > virtnet_set_affinity+0x35a/0x750 drivers/net/virtio_net.c:2303 > init_vqs drivers/net/virtio_net.c:3581 [inline] > init_vqs drivers/net/virtio_net.c:3567 [inline] > virtnet_probe+0x12ae/0x31e0 drivers/net/virtio_net.c:3884 > virtio_dev_probe+0x577/0x870 drivers/virtio/virtio.c:305 > call_driver_probe drivers/base/dd.c:560 [inline] > really_probe+0x249/0xb90 drivers/base/dd.c:639 > __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 > driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 > __driver_attach+0x1d0/0x550 drivers/base/dd.c:1190 > bus_for_each_dev+0x147/0x1d0 drivers/base/bus.c:301 > bus_add_driver+0x4c9/0x640 drivers/base/bus.c:618 > driver_register+0x220/0x3a0 drivers/base/driver.c:246 > virtio_net_driver_init+0x93/0xd2 drivers/net/virtio_net.c:4090 > do_one_initcall+0x13d/0x780 init/main.c:1303 > do_initcall_level init/main.c:1376 [inline] > do_initcalls init/main.c:1392 [inline] > do_basic_setup init/main.c:1411 [inline] > kernel_init_freeable+0x6ff/0x788 init/main.c:1631 > kernel_init+0x1a/0x1d0 init/main.c:1519 > ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 > #syz test: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master figure out why is syzbot triggering warnings Signed-off-by: Michael S. Tsirkin --- drivers/net/virtio_net.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 7106932c6f88..3c1c16b43bbd 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2295,13 +2295,20 @@ static void virtnet_set_affinity(struct virtnet_info *vi) 0; cpu = cpumask_first(cpu_online_mask); + printk(KERN_ERR "%s +%d : %s cpu %d num %d stride %d stragglers %d\n", + __FILE__, __LINE__, __func__, cpu, num_cpu, stride, stragglers); + for (i = 0; i < vi->curr_queue_pairs; i++) { group_size = stride + (i < stragglers ? 1 : 0); + printk(KERN_ERR "%s +%d : %s vq %d group_size %d", + __FILE__, __LINE__, __func__, i, group_size); for (j = 0; j < group_size; j++) { cpumask_set_cpu(cpu, mask); cpu = cpumask_next_wrap(cpu, cpu_online_mask, nr_cpu_ids, false); + printk(KERN_ERR "%s +%d : %s groupindex %d cpu %d", + __FILE__, __LINE__, __func__, j, group_size); } virtqueue_set_affinity(vi->rq[i].vq, mask); virtqueue_set_affinity(vi->sq[i].vq, mask); -- MST