From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A93751E2605 for ; Fri, 15 Nov 2024 21:05:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731704743; cv=none; b=Apab0hc78T09ISIc9Q1s59CG/w80NsUGyBOhEz4C1XOQyNYXvS6yaXBFF88C0osds+Qeua0tR4f54K7fJhL0/UxkDdKljnaSm/2+ibqlvg6EzlEwDqwBfF5g+FJ+0Rs0JPBb7AW01DRNUy9+ubqL2mGqd4pQtp2qy3nD2mPNKd8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731704743; c=relaxed/simple; bh=t7Shf2W40c0vMfGShaTckrM/onShicQX3QBbfNNI1eU=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=IAef1643hoyT3ftCrfwdq9Vns+59GQ0JpMWJTgxNw6RqonILTUkmu5k3hggYR2zEEEX45j/QlJE6bift2E9ZRetLQxx5CajxgZY3R4+6Gzh1AE4U4X+AKGoTO1itVQeKf8QH6/D8EaD24Lx0q2MyGl5w8wPKKpzGSkFPNaI49xs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-83ac79525b8so212128239f.3 for ; Fri, 15 Nov 2024 13:05:39 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731704739; x=1732309539; h=content-transfer-encoding:to:from:subject:message-id:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=eFPvOF8Hd8JRqV8xE2Dh6av8Zbj2KHnyeLK3X4e7WJ4=; b=pGO/+fc++7PmPnLxVnYkyUkJQXp7w8nNVD1rbeVgV+agR9jLF4XVou5tubR7igokBH O1OLM7Rsk1tt2Igq4XOWL9BDoCGL2zlpLfmjSQrNPyAWyyfKDpFG8NWZIHkvpjmIlwFB 42elWwgD3QUy4lfeDXJhAwlmeQk4C6utRfkfuXMdchUHVSBuD4gVMQ1b8q6V6Xgsq/Cz LBR78KFsFcMQiZ6gNDf4vALLxOijhJXDBMpbxwYjRLnhj8zaEb5+wl65q5zylOt48f5z WPKIjAC+ccnzjIPh+ttRzO50HaRJBclPr/DpazhZaL0O/mIClVnYhi0OuojReozdPJYA i5kg== X-Forwarded-Encrypted: i=1; AJvYcCVBEAKLOCnrik+4IJvUQRVOGIsD8xUlIuToYCdHUyCw23XpC5V/B/uKGj4DwQYgLSMCOnHlT4A=@vger.kernel.org X-Gm-Message-State: AOJu0Yw9Z/HG2v3xF9KFH0H08Kp7/nmJmWcjMYBmHyDmUchYoFAEH800 69rmQ3yaXV46igU0lW6wjvD2tG7p0xS7G0nAE0CsalW1D/IMtu16IrvxRKPYZt7CRrCR6q+IXoO tPzHS3jjdGN6AW/4/0HMOOAmhnX7FQRt6ILS5nfMVKUEUSfb9Q566M1c= X-Google-Smtp-Source: AGHT+IFOjKaRnZ4sVjY0/ooGeEBB+bZg/L0lYo2LocI6byDn19V0TdrTXYpM3q+caHORvZSGDRY8BD7cl5G9e3gi5L/wXRtJjQoA Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:18cc:b0:3a5:e57c:58d4 with SMTP id e9e14a558f8ab-3a74808ea4dmr47776405ab.20.1731704738630; Fri, 15 Nov 2024 13:05:38 -0800 (PST) Date: Fri, 15 Nov 2024 13:05:38 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6737b7a2.050a0220.85a0.0004.GAE@google.com> Subject: [syzbot] [net?] WARNING: suspicious RCU usage in on From: syzbot To: davem@davemloft.net, edumazet@google.com, horms@kernel.org, jhs@mojatatu.com, jiri@resnulli.us, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, xiyou.wangcong@gmail.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot found the following issue on: HEAD commit: 2d5404caa8c7 Linux 6.12-rc7 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=3D1120d35f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=3D327b6119dd928cb= c dashboard link: https://syzkaller.appspot.com/bug?extid=3D917bd189260e9ec18= 5fc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Deb= ian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7fe= b34a89c2a/non_bootable_disk-2d5404ca.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1bbbfa50cb5f/vmlinux-= 2d5404ca.xz kernel image: https://storage.googleapis.com/syzbot-assets/a5bcdede1c8a/bzI= mage-2d5404ca.xz IMPORTANT: if you fix the issue, please add the following tag to the commit= : Reported-by: syzbot+917bd189260e9ec185fc@syzkaller.appspotmail.com ce Nov 11 21:02[ 96.032192][ C1] bridge0: topology change detected, propa= gating :32 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL de[ 96.0356= 15][ T6232]=20 vice Nov 11 21:[ 96.036689][ T6232] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 02:32 syzkaller [ 96.038573][ T6232] WARNING: suspicious RCU usage daemon.err dhcpc[ 96.038591][ T6232] 6.12.0-rc7-syzkaller #0 Not tainted d[5661]: libudev[ 96.038621][ T6232] ----------------------------- : received NULL [ 96.038627][ T6232] net/sched/sch_generic.c:1256 suspici= ous rcu_dereference_protected() usage! device Nov 11 2[ 96.049502][ T6232]=20 1:02:32 syzkalle[ 96.053504][ T6232]=20 r daemon.err dhc[ 96.053520][ T6232] 3 locks held by kworker/u32:32/6232: pcd[5661]: libud[ 96.053532][ T6232] #0: ffff88804b8f2948 ((wq_completio= n)bond0#3){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue= .c:3204 ev: received NUL[ 96.061723][ T6232] #1: ffffc900033c7d80 ((work_complet= ion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1= ba0 kernel/workqueue.c:3205 L device Nov 11 21:02:32 syzkal[ 96.066284][ T6232] #2: ffffffff8e1b8340 (rcu_rea= d_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inl= ine] Nov 11 21:02:32 syzkal[ 96.066284][ T6232] #2: ffffffff8e1b8340 (rcu_rea= d_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline= ] Nov 11 21:02:32 syzkal[ 96.066284][ T6232] #2: ffffffff8e1b8340 (rcu_rea= d_lock){....}-{1:2}, at: bond_mii_monitor+0x140/0x2d90 drivers/net/bonding/= bond_main.c:2937 ler daemon.err d[ 96.070840][ T6232]=20 hcpcd[5661]: lib[ 96.070871][ T6232] Hardware name: QEMU Standard PC (Q35= + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 udev: received N[ 96.070884][ T6232] Workqueue: bond0 bond_mii_monitor ULL device Nov [ 96.082763][ T6232] Call Trace: 11 21:02:32 syzkaller daemon.errNov 11 21:02:32 syzkaller daemon.err dhcpcd= [5661]: libudev: receNov 11 21:02:32 [ 96.088151][ T6232] __dump_stack l= ib/dump_stack.c:94 [inline] 11 21:02:32 syzkaller daemon.errNov 11 21:02:32 syzkaller daemon.err dhcpcd= [5661]: libudev: receNov 11 21:02:32 [ 96.088151][ T6232] dump_stack_lvl= +0x16c/0x1f0 lib/dump_stack.c:120 syzkaller daemon[ 96.090269][ T6232] lockdep_rcu_suspicious+0x210/0x3c0 = kernel/locking/lockdep.c:6821 .err dhcpcd[5661[ 96.092560][ T6232] dev_activate+0x457/0x12b0 net/sched= /sch_generic.c:1256 ]: libudev: rece[ 96.094641][ T6232] ? spin_unlock_irqrestore include/li= nux/spinlock.h:406 [inline] ]: libudev: rece[ 96.094641][ T6232] ? linkwatch_sync_dev+0x179/0x210 ne= t/core/link_watch.c:261 ived NULL device[ 96.096940][ T6232] ? __pfx_lock_release+0x10/0x10 kern= el/locking/lockdep.c:5346 Nov 11 21:02:3[ 96.096954][ T6232] ? __pfx_dev_activate+0x10/0x10 net/sc= hed/sch_generic.c:1016 2 syzkaller daem[ 96.102894][ T6232] linkwatch_do_dev+0x13d/0x160 net/co= re/link_watch.c:173 on.err dhcpcd[56[ 96.104843][ T6232] linkwatch_sync_dev+0x181/0x210 net/= core/link_watch.c:263 61]: libudev: re[ 96.107045][ T6232] ? __pfx_ethtool_op_get_link+0x10/0x= 10 net/ethtool/ioctl.c:2712 ceived NULL devi[ 96.111265][ T6232] bond_check_dev_link+0x197/0x490 dri= vers/net/bonding/bond_main.c:873 ce Nov 11 21:02[ 96.113653][ T6232] ? __pfx_bond_check_dev_link+0x10/0x10 d= rivers/net/bonding/bond_main.c:4594 :32 syzkaller da[ 96.113678][ T6232] ? rcu_is_watching_curr_cpu include/= linux/context_tracking.h:128 [inline] :32 syzkaller da[ 96.113678][ T6232] ? rcu_is_watching+0x12/0xc0 kernel/= rcu/tree.c:737 emon.err dhcpcd[[ 96.117725][ T6232] bond_miimon_inspect drivers/net/bon= ding/bond_main.c:2717 [inline] emon.err dhcpcd[[ 96.117725][ T6232] bond_mii_monitor+0x3c1/0x2d90 drive= rs/net/bonding/bond_main.c:2939 5661]: libudev: [ 96.119909][ T6232] ? __pfx_bond_mii_monitor+0x10/0x10 = drivers/net/bonding/bond_main.c:2806 received NULL de[ 96.122254][ T6232] ? rcu_is_watching_curr_cpu include/= linux/context_tracking.h:128 [inline] received NULL de[ 96.122254][ T6232] ? rcu_is_watching+0x12/0xc0 kernel/= rcu/tree.c:737 vice Nov 11 21:[ 96.124595][ T6232] ? trace_lock_acquire+0x14a/0x1d0 include/= trace/events/lock.h:24 02:32 syzkaller [ 96.124617][ T6232] ? process_one_work+0x921/0x1ba0 ker= nel/workqueue.c:3205 daemon.err dhcpc[ 96.130226][ T6232] ? process_one_work+0x921/0x1ba0 ker= nel/workqueue.c:3205 d[5661]: libudev[ 96.132210][ T6232] process_one_work+0x9c5/0x1ba0 kerne= l/workqueue.c:3229 : received NULL [ 96.134128][ T6232] ? __pfx_macvlan_process_broadcast+0= x10/0x10 drivers/net/macvlan.c:309 device Nov 11 2[ 96.134151][ T6232] ? __pfx_process_one_work+0x10/0x10 include/= linux/list.h:153 1:02:32 syzkalle[ 96.139713][ T6232] process_scheduled_works kernel/work= queue.c:3310 [inline] 1:02:32 syzkalle[ 96.139713][ T6232] worker_thread+0x6c8/0xf00 kernel/wo= rkqueue.c:3391 r daemon.err dhc[ 96.142406][ T6232] kthread+0x2c1/0x3a0 kernel/kthread.= c:389 pcd[5661]: libudev: received NULL device Nov 11 21:02:32 syzkal[ 96.145163][ T6232] ? __pfx_kthread+0x10/0x10 inc= lude/linux/list.h:373 ler daemon.err d[ 96.145178][ T6232] ret_from_fork+0x45/0x80 arch/x86/ke= rnel/process.c:147 hcpcd[5661]: lib[ 96.145188][ T6232] ? __pfx_kthread+0x10/0x10 include/l= inux/list.h:373 udev: received N[ 96.145219][ T6232] ULL device Nov [ 96.145391][ T6232] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D 11 21:02:32 syzk[ 96.145405][ T6232] ----------------------------- aller daemon.err[ 96.145416][ T6232]=20 dhcpcd[5661]: l[ 96.145420][ T6232]=20 ibudev: received[ 96.145426][ T6232] 3 locks held by kworker/u32:32/6232: NULL device No[ 96.145433][ T6232] #0: ffff88804b8f2948 ((wq_completion)bond0#3){+.+= .}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 v 11 21:02:32 sy[ 96.145466][ T6232] #1: ffffc900033c7d80 ((work_complet= ion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1= ba0 kernel/workqueue.c:3205 zkaller daemon.e[ 96.145562][ T6232]=20 rr dhcpcd[5661]:[ 96.145566][ T6232] CPU: 2 UID: 0 PID: 6232 Comm: kworke= r/u32:32 Not tainted 6.12.0-rc7-syzkaller #0 libudev: receiv[ 96.145577][ T6232] Hardware name: QEMU Standard PC (Q35= + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 ed NULL device Nov 11 21:02:32 [ 96.145598][ T6232] Call Trace: syzkaller daemon[ 96.145601][ T6232] .err dhcpcd[5661[ 96.145605][ T6232] __dump_stack lib/dump_stack.c:94 [i= nline] .err dhcpcd[5661[ 96.145605][ T6232] dump_stack_lvl+0x16c/0x1f0 lib/dump= _stack.c:120 ]: libudev: rece[ 96.145617][ T6232] lockdep_rcu_suspicious+0x210/0x3c0 = kernel/locking/lockdep.c:6821 ived NULL device[ 96.145633][ T6232] transition_one_qdisc+0x1d4/0x210 ne= t/sched/sch_generic.c:1234 Nov 11 21:02:3[ 96.145647][ T6232] netdev_for_each_tx_queue include/linu= x/netdevice.h:2504 [inline] Nov 11 21:02:3[ 96.145647][ T6232] dev_activate+0x211/0x12b0 net/sched/s= ch_generic.c:1264 2 syzkaller daem[ 96.145661][ T6232] ? __pfx_lock_release+0x10/0x10 kern= el/locking/lockdep.c:5346 on.err dhcpcd[56[ 96.145671][ T6232] ? __pfx_dev_activate+0x10/0x10 net/= sched/sch_generic.c:1016 61]: libudev: re[ 96.145684][ T6232] ? __sanitizer_cov_trace_switch+0x54= /0x90 kernel/kcov.c:351 ceived NULL devi[ 96.145701][ T6232] linkwatch_do_dev+0x13d/0x160 net/co= re/link_watch.c:173 ce Nov 11 21:02[ 96.145714][ T6232] linkwatch_sync_dev+0x181/0x210 net/core= /link_watch.c:263 :32 syzkaller da[ 96.145727][ T6232] ? __pfx_ethtool_op_get_link+0x10/0x= 10 net/ethtool/ioctl.c:2712 emon.err dhcpcd[[ 96.145737][ T6232] ethtool_op_get_link+0x1d/0x70 net/e= thtool/ioctl.c:62 5661]: libudev: [ 96.145746][ T6232] bond_check_dev_link+0x197/0x490 dri= vers/net/bonding/bond_main.c:873 received NULL de[ 96.145758][ T6232] ? __pfx_bond_check_dev_link+0x10/0x= 10 drivers/net/bonding/bond_main.c:4594 vice Nov 11 21:[ 96.145769][ T6232] ? rcu_is_watching_curr_cpu include/linux/= context_tracking.h:128 [inline] Nov 11 21:[ 96.145769][ T6232] ? rcu_is_watching+0x12/0xc0 kernel/rcu/tr= ee.c:737 02:32 syzkaller [ 96.145787][ T6232] bond_miimon_inspect drivers/net/bon= ding/bond_main.c:2717 [inline] 02:32 syzkaller [ 96.145787][ T6232] bond_mii_monitor+0x3c1/0x2d90 drive= rs/net/bonding/bond_main.c:2939 daemon.err dhcpc[ 96.145803][ T6232] ? __pfx_bond_mii_monitor+0x10/0x10 = drivers/net/bonding/bond_main.c:2806 d[5661]: libudev[ 96.145816][ T6232] ? rcu_is_watching_curr_cpu include/= linux/context_tracking.h:128 [inline] d[5661]: libudev[ 96.145816][ T6232] ? rcu_is_watching+0x12/0xc0 kernel/= rcu/tree.c:737 : received NULL [ 96.145827][ T6232] ? trace_lock_acquire+0x14a/0x1d0 in= clude/trace/events/lock.h:24 device Nov 11 2[ 96.145839][ T6232] ? process_one_work+0x921/0x1ba0 kernel/work= queue.c:3205 1:02:32 syzkalle[ 96.145850][ T6232] ? lock_acquire+0x2f/0xb0 kernel/loc= king/lockdep.c:5796 r daemon.err dhc[ 96.145858][ T6232] ? process_one_work+0x921/0x1ba0 ker= nel/workqueue.c:3205 pcd[5661]: libud[ 96.145869][ T6232] process_one_work+0x9c5/0x1ba0 kerne= l/workqueue.c:3229 ev: received NUL[ 96.145882][ T6232] ? __pfx_macvlan_process_broadcast+0= x10/0x10 drivers/net/macvlan.c:309 L device Nov 11[ 96.145894][ T6232] ? __pfx_process_one_work+0x10/0x10 include/li= nux/list.h:153 21:02:32 syzkal[ 96.145907][ T6232] ? assign_work+0x1a0/0x250 kernel/wo= rkqueue.c:1200 ler daemon.err d[ 96.145922][ T6232] process_scheduled_works kernel/work= queue.c:3310 [inline] ler daemon.err d[ 96.145922][ T6232] worker_thread+0x6c8/0xf00 kernel/wo= rkqueue.c:3391 hcpcd[5661]: lib[ 96.145937][ T6232] ? __pfx_worker_thread+0x10/0x10 inc= lude/linux/list.h:183 udev: received N[ 96.145946][ T6232] kthread+0x2c1/0x3a0 kernel/kthread.= c:389 ULL device Nov [ 96.145957][ T6232] ? __raw_spin_unlock_irq include/linux/spinlock_= api_smp.h:159 [inline] Nov [ 96.145957][ T6232] ? _raw_spin_unlock_irq+0x23/0x50 kernel/locking= /spinlock.c:202 11 21:02:32 syzk[ 96.145969][ T6232] ? __pfx_kthread+0x10/0x10 include/l= inux/list.h:373 aller daemon.err[ 96.145981][ T6232] ret_from_fork+0x45/0x80 arch/x86/ke= rnel/process.c:147 dhcpcd[5661]: l[ 96.145990][ T6232] ? __pfx_kthread+0x10/0x10 include/l= inux/list.h:373 ibudev: received[ 96.146001][ T6232] ret_from_fork_asm+0x1a/0x30 arch/x8= 6/entry/entry_64.S:244 NULL device No[ 96.146020][ T6232] v 11 21:02:32 sy[ 96.146025][ T6232]=20 zkaller daemon.e[ 96.146028][ T6232] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D rr dhcpcd[5661]:[ 96.146031][ T6232] WARNING: suspicious RCU usage libudev: receiv[ 96.146034][ T6232] 6.12.0-rc7-syzkaller #0 Not tainted ed NULL device Nov 11 21:02:32 [ 96.146043][ T6232] include/linux/rtnetlink.h:100 suspic= ious rcu_dereference_protected() usage! syzkaller daemon[ 96.146050][ T6232]=20 .err dhcpcd[5661[ 96.146053][ T6232]=20 ]: libudev: rece[ 96.146060][ T6232] 3 locks held by kworker/u32:32/6232: ived NULL device[ 96.146066][ T6232] #0: ffff88804b8f2948 ((wq_completio= n)bond0#3){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue= .c:3204 Nov 11 21:02:3[ 96.146095][ T6232] #1: ffffc900033c7d80 ((work_completio= n)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba= 0 kernel/workqueue.c:3205 2 syzkaller daem[ 96.146122][ T6232] #2: ffffffff8e1b8340 (rcu_read_lock= ){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] 2 syzkaller daem[ 96.146122][ T6232] #2: ffffffff8e1b8340 (rcu_read_lock= ){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] 2 syzkaller daem[ 96.146122][ T6232] #2: ffffffff8e1b8340 (rcu_read_lock= ){....}-{1:2}, at: bond_mii_monitor+0x140/0x2d90 drivers/net/bonding/bond_m= ain.c:2937 on.err dhcpcd[56[ 96.146151][ T6232]=20 61]: libudev: re[ 96.146155][ T6232] CPU: 2 UID: 0 PID: 6232 Comm: kworke= r/u32:32 Not tainted 6.12.0-rc7-syzkaller #0 ceived NULL devi[ 96.146165][ T6232] Hardware name: QEMU Standard PC (Q35= + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 ce Nov 11 21:02[ 96.146171][ T6232] Workqueue: bond0 bond_mii_monitor :32 syzkaller da[ 96.146184][ T6232] Call Trace: emon.err dhcpcd[[ 96.146187][ T6232] 5661]: libudev: [ 96.146191][ T6232] __dump_stack lib/dump_stack.c:94 [i= nline] 5661]: libudev: [ 96.146191][ T6232] dump_stack_lvl+0x16c/0x1f0 lib/dump= _stack.c:120 received NULL de[ 96.146201][ T6232] lockdep_rcu_suspicious+0x210/0x3c0 = kernel/locking/lockdep.c:6821 vice Nov 11 21:[ 96.146216][ T6232] dev_ingress_queue include/linux/rtnetlink= .h:100 [inline] Nov 11 21:[ 96.146216][ T6232] dev_activate+0x7eb/0x12b0 net/sched/sch_g= eneric.c:1265 02:32 syzkaller [ 96.146230][ T6232] ? __pfx_lock_release+0x10/0x10 kern= el/locking/lockdep.c:5346 daemon.err dhcpc[ 96.146239][ T6232] ? __pfx_dev_activate+0x10/0x10 net/= sched/sch_generic.c:1016 d[5661]: libudev[ 96.146253][ T6232] ? __sanitizer_cov_trace_switch+0x54= /0x90 kernel/kcov.c:351 : received NULL [ 96.146270][ T6232] linkwatch_do_dev+0x13d/0x160 net/co= re/link_watch.c:173 device Nov 11 2[ 96.146282][ T6232] linkwatch_sync_dev+0x181/0x210 net/core/lin= k_watch.c:263 1:02:32 syzkalle[ 96.146295][ T6232] ? __pfx_ethtool_op_get_link+0x10/0x= 10 net/ethtool/ioctl.c:2712 r daemon.err dhc[ 96.146304][ T6232] ethtool_op_get_link+0x1d/0x70 net/e= thtool/ioctl.c:62 pcd[5661]: libud[ 96.146313][ T6232] bond_check_dev_link+0x197/0x490 dri= vers/net/bonding/bond_main.c:873 ev: received NUL[ 96.146325][ T6232] ? __pfx_bond_check_dev_link+0x10/0x= 10 drivers/net/bonding/bond_main.c:4594 L device Nov 11[ 96.146336][ T6232] ? rcu_is_watching_curr_cpu include/linux/cont= ext_tracking.h:128 [inline] Nov 11[ 96.146336][ T6232] ? rcu_is_watching+0x12/0xc0 kernel/rcu/tree.c= :737 21:02:32 syzkal[ 96.146352][ T6232] bond_miimon_inspect drivers/net/bon= ding/bond_main.c:2717 [inline] 21:02:32 syzkal[ 96.146352][ T6232] bond_mii_monitor+0x3c1/0x2d90 drive= rs/net/bonding/bond_main.c:2939 ler daemon.err d[ 96.146369][ T6232] ? __pfx_bond_mii_monitor+0x10/0x10 = drivers/net/bonding/bond_main.c:2806 hcpcd[5661]: lib[ 96.146385][ T6232] ? rcu_is_watching_curr_cpu include/= linux/context_tracking.h:128 [inline] hcpcd[5661]: lib[ 96.146385][ T6232] ? rcu_is_watching+0x12/0xc0 kernel/= rcu/tree.c:737 udev: received N[ 96.146396][ T6232] ? trace_lock_acquire+0x14a/0x1d0 in= clude/trace/events/lock.h:24 ULL device Nov [ 96.146408][ T6232] ? process_one_work+0x921/0x1ba0 kernel/workqueu= e.c:3205 11 21:02:32 syzk[ 96.146418][ T6232] ? lock_acquire+0x2f/0xb0 kernel/loc= king/lockdep.c:5796 aller daemon.err[ 96.146427][ T6232] ? process_one_work+0x921/0x1ba0 ker= nel/workqueue.c:3205 dhcpcd[5661]: l[ 96.146437][ T6232] process_one_work+0x9c5/0x1ba0 kerne= l/workqueue.c:3229 ibudev: received[ 96.146451][ T6232] ? __pfx_macvlan_process_broadcast+0= x10/0x10 drivers/net/macvlan.c:309 NULL device No[ 96.146461][ T6232] ? __pfx_process_one_work+0x10/0x10 include/linux/= list.h:153 v 11 21:02:32 sy[ 96.146474][ T6232] ? assign_work+0x1a0/0x250 kernel/wo= rkqueue.c:1200 zkaller daemon.e[ 96.146489][ T6232] process_scheduled_works kernel/work= queue.c:3310 [inline] zkaller daemon.e[ 96.146489][ T6232] worker_thread+0x6c8/0xf00 kernel/wo= rkqueue.c:3391 rr dhcpcd[5661]:[ 96.146503][ T6232] ? __pfx_worker_thread+0x10/0x10 inc= lude/linux/list.h:183 libudev: receiv[ 96.146513][ T6232] kthread+0x2c1/0x3a0 kernel/kthread.= c:389 ed NULL device Nov 11 21:02:32 [ 96.146536][ T6232] ? __pfx_kthread+0x10/0x10 include/l= inux/list.h:373 syzkaller daemon[ 96.146547][ T6232] ret_from_fork+0x45/0x80 arch/x86/ke= rnel/process.c:147 .err dhcpcd[5661[ 96.146555][ T6232] ? __pfx_kthread+0x10/0x10 include/l= inux/list.h:373 ]: libudev: rece[ 96.146567][ T6232] ret_from_fork_asm+0x1a/0x30 arch/x8= 6/entry/entry_64.S:244 ived NULL device[ 96.146585][ T6232] Nov 11 21:02:32 syzkaller daem[ 96.333328][ T6232] BUG: sleeping function= called from invalid context at kernel/locking/rwsem.c:1523 on.err dhcpcd[56[ 96.335759][ T6232] in_atomic(): 0, irqs_disabled(): 0, = non_block: 0, pid: 6232, name: kworker/u32:32 61]: libudev: re[ 96.338277][ T6232] preempt_count: 0, expected: 0 ceived NULL devi[ 96.339800][ T6232] RCU nest depth: 1, expected: 0 ce Nov 11 21:02[ 96.341338][ T6232] 3 locks held by kworker/u32:32/6232: :32 syzkaller da[ 96.342995][ T6232] #0: ffff88804b8f2948 ((wq_completio= n)bond0#3){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue= .c:3204 emon.err dhcpcd[[ 96.345823][ T6232] #1: ffffc900033c7d80 ((work_complet= ion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1= ba0 kernel/workqueue.c:3205 5661]: libudev: [ 96.348943][ T6232] #2: ffffffff8e1b8340 (rcu_read_lock= ){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] 5661]: libudev: [ 96.348943][ T6232] #2: ffffffff8e1b8340 (rcu_read_lock= ){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] 5661]: libudev: [ 96.348943][ T6232] #2: ffffffff8e1b8340 (rcu_read_lock= ){....}-{1:2}, at: bond_mii_monitor+0x140/0x2d90 drivers/net/bonding/bond_m= ain.c:2937 received NULL de[ 96.351636][ T6232] CPU: 2 UID: 0 PID: 6232 Comm: kworke= r/u32:32 Not tainted 6.12.0-rc7-syzkaller #0 vice Nov 11 21:[ 96.354069][ T6232] Hardware name: QEMU Standard PC (Q35 + ICH= 9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 02:32 syzkaller [ 96.356965][ T6232] Workqueue: bond0 bond_mii_monitor daemon.err dhcpc[ 96.359016][ T6232] Call Trace: d[5661]: libudev[ 96.360510][ T6232] : received NULL [ 96.361644][ T6232] __dump_stack lib/dump_stack.c:94 [i= nline] : received NULL [ 96.361644][ T6232] dump_stack_lvl+0x16c/0x1f0 lib/dump= _stack.c:120 device Nov 11 2[ 96.363142][ T6232] __might_resched+0x3c0/0x5e0 kernel/sched/co= re.c:8653 1:02:32 syzkalle[ 96.364728][ T6232] ? __pfx___might_resched+0x10/0x10 k= ernel/sched/core.c:5828 r daemon.err dhc[ 96.366340][ T6232] down_read+0x73/0x330 kernel/locking= /rwsem.c:1523 pcd[5661]: libud[ 96.367925][ T6232] ? __pfx_down_read+0x10/0x10 ev: received NUL[ 96.369905][ T6232] ? dev_map_notification+0x6a/0xaf0 k= ernel/bpf/devmap.c:1153 L device Nov 11[ 96.371941][ T6232] ? __sanitizer_cov_trace_switch+0x54/0x90 kern= el/kcov.c:351 21:02:32 syzkal[ 96.373845][ T6232] wireless_nlevent_flush+0x1b/0x100 n= et/wireless/wext-core.c:351 ler daemon.err d[ 96.375498][ T6232] wext_netdev_notifier_call+0xe/0x20 = net/wireless/wext-core.c:371 hcpcd[5661]: lib[ 96.377128][ T6232] notifier_call_chain+0xb9/0x410 kern= el/notifier.c:93 udev: received N[ 96.378697][ T6232] ? __pfx_wext_netdev_notifier_call+0= x10/0x10 net/wireless/wext-core.c:352 ULL device Nov [ 96.380780][ T6232] call_netdevice_notifiers_info+0xbe/0x140 net/co= re/dev.c:1996 11 21:02:32 syzk[ 96.382471][ T6232] netdev_state_change net/core/dev.c:= 1378 [inline] 11 21:02:32 syzk[ 96.382471][ T6232] netdev_state_change+0x115/0x150 net= /core/dev.c:1371 aller daemon.err[ 96.383984][ T6232] ? __pfx_netdev_state_change+0x10/0x= 10 include/net/net_namespace.h:383 dhcpcd[5661]: l[ 96.385693][ T6232] ? __sanitizer_cov_trace_switch+0x54= /0x90 kernel/kcov.c:351 ibudev: received[ 96.387526][ T6232] linkwatch_do_dev+0x12b/0x160 net/co= re/link_watch.c:177 NULL device No[ 96.389577][ T6232] linkwatch_sync_dev+0x181/0x210 net/core/link_watc= h.c:263 v 11 21:02:32 sy[ 96.391355][ T6232] ? __pfx_ethtool_op_get_link+0x10/0x= 10 net/ethtool/ioctl.c:2712 zkaller daemon.e[ 96.393047][ T6232] ethtool_op_get_link+0x1d/0x70 net/e= thtool/ioctl.c:62 rr dhcpcd[5661]:[ 96.394857][ T6232] bond_check_dev_link+0x197/0x490 dri= vers/net/bonding/bond_main.c:873 libudev: receiv[ 96.396472][ T6232] ? __pfx_bond_check_dev_link+0x10/0x= 10 drivers/net/bonding/bond_main.c:4594 ed NULL device Nov 11 21:02:32 [ 96.399965][ T6232] bond_miimon_inspect drivers/net/bon= ding/bond_main.c:2717 [inline] Nov 11 21:02:32 [ 96.399965][ T6232] bond_mii_monitor+0x3c1/0x2d90 drive= rs/net/bonding/bond_main.c:2939 syzkaller daemon[ 96.401543][ T6232] ? __pfx_bond_mii_monitor+0x10/0x10 = drivers/net/bonding/bond_main.c:2806 .err dhcpcd[5661[ 96.403142][ T6232] ? rcu_is_watching_curr_cpu include/= linux/context_tracking.h:128 [inline] .err dhcpcd[5661[ 96.403142][ T6232] ? rcu_is_watching+0x12/0xc0 kernel/= rcu/tree.c:737 ]: libudev: rece[ 96.404629][ T6232] ? trace_lock_acquire+0x14a/0x1d0 in= clude/trace/events/lock.h:24 ived NULL device[ 96.406212][ T6232] ? process_one_work+0x921/0x1ba0 ker= nel/workqueue.c:3205 Nov 11 21:02:3[ 96.407857][ T6232] ? lock_acquire+0x2f/0xb0 kernel/locki= ng/lockdep.c:5796 2 syzkaller daem[ 96.409307][ T6232] ? process_one_work+0x921/0x1ba0 ker= nel/workqueue.c:3205 on.err dhcpcd[56[ 96.410910][ T6232] process_one_work+0x9c5/0x1ba0 kerne= l/workqueue.c:3229 61]: libudev: re[ 96.412468][ T6232] ? __pfx_macvlan_process_broadcast+0= x10/0x10 drivers/net/macvlan.c:309 ceived NULL devi[ 96.414179][ T6232] ? __pfx_process_one_work+0x10/0x10 = include/linux/list.h:153 ce Nov 11 21:02[ 96.415769][ T6232] ? assign_work+0x1a0/0x250 kernel/workqu= eue.c:1200 :32 syzkaller da[ 96.417321][ T6232] process_scheduled_works kernel/work= queue.c:3310 [inline] :32 syzkaller da[ 96.417321][ T6232] worker_thread+0x6c8/0xf00 kernel/wo= rkqueue.c:3391 emon.err dhcpcd[[ 96.418756][ T6232] ? __pfx_worker_thread+0x10/0x10 inc= lude/linux/list.h:183 5661]: libudev: [ 96.420279][ T6232] kthread+0x2c1/0x3a0 kernel/kthread.= c:389 received NULL de[ 96.421514][ T6232] ? __raw_spin_unlock_irq include/lin= ux/spinlock_api_smp.h:159 [inline] received NULL de[ 96.421514][ T6232] ? _raw_spin_unlock_irq+0x23/0x50 ke= rnel/locking/spinlock.c:202 vice Nov 11 21:[ 96.423050][ T6232] ? __pfx_kthread+0x10/0x10 include/linux/l= ist.h:373 02:32 syzkaller [ 96.424425][ T6232] ret_from_fork+0x45/0x80 arch/x86/ke= rnel/process.c:147 daemon.err dhcpc[ 96.425840][ T6232] ? __pfx_kthread+0x10/0x10 include/l= inux/list.h:373 d[5661]: libudev[ 96.427212][ T6232] ret_from_fork_asm+0x1a/0x30 arch/x8= 6/entry/entry_64.S:244 : received NULL [ 96.428635][ T6232] device Nov 11 2[ 96.429829][ T6232]=20 1:02:32 syzkalle[ 96.430587][ T6232] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D r daemon.err dhc[ 96.432112][ T6232] [ BUG: Invalid wait context ] pcd[5661]: libud[ 96.433560][ T6232] 6.12.0-rc7-syzkaller #0 Tainted: G = W =20 ev: received NUL[ 96.435434][ T6232] ----------------------------- L device Nov 11[ 96.436843][ T6232] kworker/u32:32/6232 is trying to lock: 21:02:32 syzkal[ 96.438550][ T6232] ffffffff8fecdad0 (net_rwsem){++++}-{= 3:3}, at: wireless_nlevent_flush+0x1b/0x100 net/wireless/wext-core.c:351 ler daemon.err d[ 96.440935][ T6232] other info that might help us debug = this: hcpcd[5661]: lib[ 96.442701][ T6232] context-{4:4} udev: received N[ 96.443914][ T6232] 3 locks held by kworker/u32:32/6232: ULL device Nov [ 96.445534][ T6232] #0: ffff88804b8f2948 ((wq_completion)bond0#3){+= .+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 11 21:02:32 syzk[ 96.448198][ T6232] #1: ffffc900033c7d80 ((work_complet= ion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1= ba0 kernel/workqueue.c:3205 aller daemon.err[ 96.451227][ T6232] #2: ffffffff8e1b8340 (rcu_read_lock= ){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] aller daemon.err[ 96.451227][ T6232] #2: ffffffff8e1b8340 (rcu_read_lock= ){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] aller daemon.err[ 96.451227][ T6232] #2: ffffffff8e1b8340 (rcu_read_lock= ){....}-{1:2}, at: bond_mii_monitor+0x140/0x2d90 drivers/net/bonding/bond_m= ain.c:2937 dhcpcd[5661]: l[ 96.453823][ T6232] stack backtrace: ibudev: received[ 96.455014][ T6232] CPU: 2 UID: 0 PID: 6232 Comm: kworke= r/u32:32 Tainted: G W 6.12.0-rc7-syzkaller #0 NULL device No[ 96.457827][ T6232] Tainted: [W]=3DWARN v 11 21:02:32 sy[ 96.459117][ T6232] Hardware name: QEMU Standard PC (Q35= + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 zkaller daemon.e[ 96.461987][ T6232] Workqueue: bond0 bond_mii_monitor rr dhcpcd[5661]:[ 96.463607][ T6232] Call Trace: libudev: receiv[ 96.464778][ T6232] ed NULL device Nov 11 21:02:32 [ 96.467375][ T6232] print_lock_invalid_wait_context ker= nel/locking/lockdep.c:4802 [inline] Nov 11 21:02:32 [ 96.467375][ T6232] check_wait_context kernel/locking/l= ockdep.c:4874 [inline] Nov 11 21:02:32 [ 96.467375][ T6232] __lock_acquire+0x13db/0x3ce0 kernel= /locking/lockdep.c:5152 syzkaller daemon[ 96.468900][ T6232] ? mark_held_locks+0x9f/0xe0 kernel/= locking/lockdep.c:4321 .err dhcpcd[5661[ 96.470608][ T6232] ? __pfx___lock_acquire+0x10/0x10 ke= rnel/locking/lockdep.c:4387 ]: libudev: rece[ 96.472353][ T6232] ? irqentry_exit+0x3b/0x90 kernel/en= try/common.c:357 ived NULL device[ 96.473939][ T6232] ? lockdep_hardirqs_on+0x7c/0x110 ke= rnel/locking/lockdep.c:4468 Nov 11 21:02:3[ 96.475727][ T6232] lock_acquire.part.0+0x11b/0x380 kerne= l/locking/lockdep.c:5825 2 syzkaller daem[ 96.477482][ T6232] ? wireless_nlevent_flush+0x1b/0x100= net/wireless/wext-core.c:351 on.err dhcpcd[56[ 96.479319][ T6232] ? __pfx_lock_acquire.part.0+0x10/0x= 10 kernel/locking/lockdep.c:122 61]: libudev: re[ 96.481159][ T6232] ? rcu_is_watching_curr_cpu include/= linux/context_tracking.h:128 [inline] 61]: libudev: re[ 96.481159][ T6232] ? rcu_is_watching+0x12/0xc0 kernel/= rcu/tree.c:737 ceived NULL devi[ 96.482838][ T6232] ? trace_lock_acquire+0x14a/0x1d0 in= clude/trace/events/lock.h:24 ce Nov 11 21:02[ 96.484636][ T6232] ? __might_resched+0x3cc/0x5e0 kernel/sc= hed/core.c:8654 :32 syzkaller da[ 96.486190][ T6232] ? wireless_nlevent_flush+0x1b/0x100= net/wireless/wext-core.c:351 emon.err dhcpcd[[ 96.487877][ T6232] ? lock_acquire+0x2f/0xb0 kernel/loc= king/lockdep.c:5796 5661]: libudev: [ 96.489445][ T6232] ? wireless_nlevent_flush+0x1b/0x100= net/wireless/wext-core.c:351 received NULL de[ 96.491234][ T6232] down_read+0x9a/0x330 kernel/locking= /rwsem.c:1524 vice Nov 11 21:[ 96.492596][ T6232] ? wireless_nlevent_flush+0x1b/0x100 net/w= ireless/wext-core.c:351 02:32 syzkaller [ 96.494426][ T6232] ? __pfx_down_read+0x10/0x10 daemon.err dhcpc[ 96.496124][ T6232] ? dev_map_notification+0x6a/0xaf0 k= ernel/bpf/devmap.c:1153 d[5661]: libudev[ 96.498338][ T6232] ? __sanitizer_cov_trace_switch+0x54= /0x90 kernel/kcov.c:351 : received NULL [ 96.500581][ T6232] wireless_nlevent_flush+0x1b/0x100 n= et/wireless/wext-core.c:351 device Nov 11 2[ 96.502354][ T6232] wext_netdev_notifier_call+0xe/0x20 net/wire= less/wext-core.c:371 1:02:32 syzkalle[ 96.504180][ T6232] notifier_call_chain+0xb9/0x410 kern= el/notifier.c:93 r daemon.err dhc[ 96.505918][ T6232] ? __pfx_wext_netdev_notifier_call+0= x10/0x10 net/wireless/wext-core.c:352 pcd[5661]: libud[ 96.508156][ T6232] call_netdevice_notifiers_info+0xbe/= 0x140 net/core/dev.c:1996 ev: received NUL[ 96.510059][ T6232] netdev_state_change net/core/dev.c:= 1378 [inline] ev: received NUL[ 96.510059][ T6232] netdev_state_change+0x115/0x150 net= /core/dev.c:1371 L device Nov 11[ 96.511811][ T6232] ? __pfx_netdev_state_change+0x10/0x10 include= /net/net_namespace.h:383 21:02:32 syzkal[ 96.513492][ T6232] ? __sanitizer_cov_trace_switch+0x54= /0x90 kernel/kcov.c:351 ler daemon.err d[ 96.515426][ T6232] linkwatch_do_dev+0x12b/0x160 net/co= re/link_watch.c:177 hcpcd[5661]: lib[ 96.517111][ T6232] linkwatch_sync_dev+0x181/0x210 net/= core/link_watch.c:263 udev: received N[ 96.518862][ T6232] ? __pfx_ethtool_op_get_link+0x10/0x= 10 net/ethtool/ioctl.c:2712 ULL device Nov [ 96.520713][ T6232] ethtool_op_get_link+0x1d/0x70 net/ethtool/ioctl= .c:62 11 21:02:32 syzk[ 96.522257][ T6232] bond_check_dev_link+0x197/0x490 dri= vers/net/bonding/bond_main.c:873 aller daemon.err[ 96.523862][ T6232] ? __pfx_bond_check_dev_link+0x10/0x= 10 drivers/net/bonding/bond_main.c:4594 dhcpcd[5661]: l[ 96.525553][ T6232] ? rcu_is_watching_curr_cpu include/= linux/context_tracking.h:128 [inline] dhcpcd[5661]: l[ 96.525553][ T6232] ? rcu_is_watching+0x12/0xc0 kernel/= rcu/tree.c:737 ibudev: received[ 96.527071][ T6232] bond_miimon_inspect drivers/net/bon= ding/bond_main.c:2717 [inline] ibudev: received[ 96.527071][ T6232] bond_mii_monitor+0x3c1/0x2d90 drive= rs/net/bonding/bond_main.c:2939 NULL device No[ 96.528841][ T6232] ? __pfx_bond_mii_monitor+0x10/0x10 drivers/net/bo= nding/bond_main.c:2806 v 11 21:02:32 sy[ 96.530573][ T6232] ? rcu_is_watching_curr_cpu include/= linux/context_tracking.h:128 [inline] v 11 21:02:32 sy[ 96.530573][ T6232] ? rcu_is_watching+0x12/0xc0 kernel/= rcu/tree.c:737 zkaller daemon.e[ 96.532252][ T6232] ? trace_lock_acquire+0x14a/0x1d0 in= clude/trace/events/lock.h:24 rr dhcpcd[5661]:[ 96.533854][ T6232] ? process_one_work+0x921/0x1ba0 ker= nel/workqueue.c:3205 libudev: receiv[ 96.535566][ T6232] ? lock_acquire+0x2f/0xb0 kernel/loc= king/lockdep.c:5796 ed NULL device Nov 11 21:02:32 [ 96.538918][ T6232] process_one_work+0x9c5/0x1ba0 kerne= l/workqueue.c:3229 syzkaller daemon[ 96.540589][ T6232] ? __pfx_macvlan_process_broadcast+0= x10/0x10 drivers/net/macvlan.c:309 .err dhcpcd[5661[ 96.542543][ T6232] ? __pfx_process_one_work+0x10/0x10 = include/linux/list.h:153 ]: libudev: rece[ 96.544227][ T6232] ? assign_work+0x1a0/0x250 kernel/wo= rkqueue.c:1200 ived NULL device[ 96.545695][ T6232] process_scheduled_works kernel/work= queue.c:3310 [inline] ived NULL device[ 96.545695][ T6232] worker_thread+0x6c8/0xf00 kernel/wo= rkqueue.c:3391 Nov 11 21:02:3[ 96.547183][ T6232] ? __pfx_worker_thread+0x10/0x10 inclu= de/linux/list.h:183 2 syzkaller daem[ 96.548759][ T6232] kthread+0x2c1/0x3a0 kernel/kthread.= c:389 on.err dhcpcd[56[ 96.550159][ T6232] ? __raw_spin_unlock_irq include/lin= ux/spinlock_api_smp.h:159 [inline] on.err dhcpcd[56[ 96.550159][ T6232] ? _raw_spin_unlock_irq+0x23/0x50 ke= rnel/locking/spinlock.c:202 61]: libudev: re[ 96.551902][ T6232] ? __pfx_kthread+0x10/0x10 include/l= inux/list.h:373 ceived NULL devi[ 96.553553][ T6232] ret_from_fork+0x45/0x80 arch/x86/ke= rnel/process.c:147 ce Nov 11 21:02[ 96.555156][ T6232] ? __pfx_kthread+0x10/0x10 include/linux= /list.h:373 :32 syzkaller da[ 96.556740][ T6232] ret_from_fork_asm+0x1a/0x30 arch/x8= 6/entry/entry_64.S:244 emon.err dhcpcd[[ 96.558272][ T6232] 5661]: libudev: received NULL device Nov 11 21:02:32 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:32 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:32 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov [ 96.567245][ T6232] bond0: (slave bridge0): link status up, enabling= it in 4 ms 11 21:02:32 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL devic= e Nov 11 21:02:32 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:32 syzkaller kern.info kernel: [ 96.025634][ C1] bridge0:= port 2(bridge_slave_1) entered forwarding state Nov 11 21:02:32 syzkaller kern.info kernel: [ 96.027878][ C1] bridge0:= topology change detected, propagating Nov 11 21:02:32 syzkaller kern.info kernel: [ 96.030078][ C1] bridge0:= port[ 96.585912][ T6232] bond0: (slave bridge0): link status up, enablin= g it in 4 ms 1(bridge_slave_0) entered forwarding state Nov 11 21:02:32 syzkaller kern.info kernel: [ 96.032192][ C1] bridge0:= topology change detected, propagating Nov 11 21:02:32 syzkaller kern.warn kernel: [ 96.035615][ T6232]=20 Nov 11 21:02:32 syzkaller kern.warn kernel: [ 96.036689][ T6232] =3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D Nov 11 21:02:32 syzkaller kern.warn kernel: [ 96.038573][ T6232] WARNING:= suspicious RCU usage Nov 11 21:02:32 syzkaller kern.warn kernel: [ 96.038591][ T6232] 6.12.0-r= c7-syzkaller[ 96.605864][ T6232] bond0: (slave bridge0): link status up, = enabling it in 4 ms #0 Not tainted Nov 11 21:02:32 syzkaller kern.warn kernel: [ 96.038621][ T6232] --------= --------------------- Nov 11 21:02:32 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:32 syzkaller kern.warn kernel: [ 96.038627][ T6232] net/sche= d/sch_generic.c:1256 suspicious rcu_dereference_protected() usage! Nov 11 21:02:32 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.049502][ T6232]=20 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.049502][ T6232] other in= fo that might help us debug this: Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.049502][ T6232]=20 Nov 11 [ 96.625731][ T1133] bond0: (slave bridge0): link status up, enabl= ing it in 4 ms 21:02:33 syzkaller kern.warn kernel: [ 96.053504][ T6232]=20 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.053504][ T6232] rcu_sche= duler_active =3D 2, debug_locks =3D 1 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.053520][ T6232] 3 locks = held by kworker/u32:32/6232: Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.053532][ T6232] #0: fff= f88804b8f2948 ((wq_completion)bond0#3){+.+.}-{0:0}, at: process_one_work+0x= 129b/0x1ba0 kernel/workqueue.c:3204 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.061723][ T6232] #1: fff= fc900033c7d80 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at= : process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.066284][ T6232] #2: fff= fffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/lin= ux/rcupdate.h:337 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.066284][ T6232] #2: fff= fffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/= rcupdate.h:849 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.066284][ T6232] #2: fff= fffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: bond_mii_monitor+0x140/0x2d9= 0 drivers/net/bonding/bond_main.c:2937 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.070840][ T6232]=20 Nov 11 21:02:33[ 96.662826][ T77] bond0: (slave bridge0): link status u= p, enabling it in 4 ms syzkaller kern.warn kernel: [ 96.070840][ T6232] stack backtrace: Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.070852][ T6232] CPU: 2 U= ID: 0 PID: 6232 Comm: kworker/u32:32 Not tainted 6.12.0-rc7-syzkaller #0 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.070871][ T6232] Hardware= name: QEMU Standard PC (Q[ 96.675998][ T77] bond0: (slave bridge0): li= nk status up, enabling it in 4 ms 35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.070884][ T6232] Workqueu= e: bond0 bond_mii_monitor Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.082763][ T6232] Call Tra= ce: Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.084507][ T6232] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.088151][ T6232] __dump_= stack lib/dump_stack.c:94 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.088151][ T6232] dump_st= ack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.090269][ T6232] lockdep= _rcu_suspicious+0[ 96.695552][ T77] bond0: (slave bridge0): link status= up, enabling it in 4 ms x210/0x3c0 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.092560][ T6232] dev_act= ivate+0x457/0x12b0 net/sched/sch_generic.c:1256 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.094641][ T6232] ? spin_= unlock_irqrestore include/linux/spinlock.h:406 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.094641][ T6232] ? linkw= atch_sync_dev+0x179/0x210 net/core/link_watch.c:261 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.096940][ T6232] ? __pfx= _lock_release+0x10/0x10 kernel/locking/lockdep.c:5346 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.096954][ T6232] ? __pfx= _dev_activate+0x10/0x10 net/sched/sch_generic.c:1016 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.096969][ T6232] ? __san= itizer_cov_trace_switch+0x54/0x90 kernel/kcov.c:351 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.102894][ T6232] linkw[ = 96.715869][ T77] bond0: (slave bridge0): link status up, enabling it in= 4 ms atch_do_dev+0x13d/0x160 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.104843][ T6232] linkwat= ch_sync_dev+0x181/0x210 net/core/link_watch.c:263 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.107045][ T6232] ? __pfx= _ethtool_op_get_link+0x10/0x10 net/ethtool/ioctl.c:2712 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.109510][ T6232] ethtool= _op_get_link+0x1d/0x70 net/ethtool/ioctl.c:62 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.111265][ T6232] bond_ch= eck_dev_link+0x197/0x490 drivers/net/bonding/bond_main.c:873 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.113653][ T6232] ? __pfx= _bond_check_dev_link+0x10/0x10 drivers/net/bonding/bond_main.c:4594 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.113678][ T6232] ? rcu_i= s_watching_curr_cpu include/linux/context_tracking.h:128 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.113678][ T6232] ? rcu_i= s_watching+0x12/0xc0 kernel/rcu/tree.c:737 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.117725][ T6232] bond_mi= imon_inspect drivers/net/bonding/bond_main.c:2717 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.117725][ T6232] bond_mi= i_monitor+0x3c1/0x2d90 drivers/net/bonding/bond_main.c:2939 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.119909][ T6232] ? __pfx= _bond_mii_monitor+0x10/0x10 drivers/net/bonding/bond_main.c:2806 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.122254][ T6232] ? rcu_i= s_watching_curr_cpu include/linux/context_tracking.h:128 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.122254][ T6232] ? rcu_i= s_watching+0x12/0xc0 kernel/rcu/tree.c:737 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.124595][ T6232] ? trace= _lock_acquire+0x14a/0x1d0 include/trace/events/lock.h:24 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.124617][ T6232] ? proce= ss_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.124632][ T6232] ? lock_= acquire+0x2f/0xb0 kernel/locking/lockdep.c:5796 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.130226][ T6232] ? proce= ss_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.132210][ T6232] process= _one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.134128][ T6232] ? __pfx= _macvlan_process_broadcast+0x10/0x10 drivers/net/macvlan.c:309 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.134151][ T6232] ? __pfx= _process_one_work+0x10/0x10 include/linux/list.h:153 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.134181][ T6232] ? assig= n_work+0x1a0/0x250 kernel/workqueue.c:1200 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.139713][ T6232] process= _scheduled_works kernel/workqueue.c:3310 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.139713][ T6232] worker_= thread+0x6c8/0xf00 kernel/workqueue.c:3391 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.141162][ T6232] ? __pfx= _worker_thread+0x10/0x10 include/linux/list.h:183 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.142406][ T6232] kthread= +0x2c1/0x3a0 kernel/kthread.c:389 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.143917][ T6232] ? __raw= _spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.143917][ T6232] ? _raw_= spin_unlock_irq+0x23/0x50 kernel/locking/spinlock.c:202 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145163][ T6232] ? __pfx= _kthread+0x10/0x10 include/linux/list.h:373 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145178][ T6232] ret_fro= m_fork+0x45/0x80 arch/x86/kernel/process.c:147 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145188][ T6232] ? __pfx= _kthread+0x10/0x10 include/linux/list.h:373 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145199][ T6232] ret_fro= m_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145219][ T6232] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145386][ T6232]=20 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145391][ T6232] =3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145395][ T6232] WARNING:= suspicious RCU usage Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145399][ T6232] 6.12.0-r= c7-syzkalleNov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 = Nov 11 21:02:33 Nov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 Nov 11 21:0= 2:33 syzkaller kern.wNov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145= 433][ T6232] #0: ffff88804b8f2948 ((wq_completion)bond0#3){+.+.}-{0:0}, at= : process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 Nov 11 21:02:33 syzkaller kerNov 11 21:02:33 Nov 11 21:02:33 syzkaller kern= .warn kernel: [ Nov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 Nov 11 21= :02:33 Nov 11 21:02:33 Nov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzk= aller kern.warn kernel: [ 96.145605][ T623Nov 11 21:02:33 syzkaller kern.= wNov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:= 02:33 Nov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 Nov 11 21:02:33 syzka= ller kern.wNov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller kern.w= Nov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller kern.wNov 11 21:0= 2:33 syzkaller kern.wNov 11 21:02:33 [ 96.829369][ T6232] bond0: (slave b= ridge0): link status up, enabling it in 4 ms syzkaller kern.warn kernel: [ 96.145803][ T6232] ? __pfx_bond_mii_monito= r+0x10/0x10 drivers/net/bonding/bond_main.c:2806 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145816][ T6232] ? rcu_i= s_watching_curr_cpu include/linux/context_tracking.h:128 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145816][ T6232] ? rcu_i= s_watching+0x12/0xc0 kernel/rcu/tree.c:737 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145827][ T6232] ? trace= _lock_acquire+0x14a/0x1d0 include/trace/events/lock.h:24 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145839][ T6232] ? proce= ss_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145850][ T6232] ? lock_= acquire+0x2f/0xb0 kernel/locking/lockdep.c:5796 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145858][ T6232] ? proce= ss_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145869][ T6232] process= _one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145882][ T6232] ? __pfx= _macvlan_process_broadcast+0x10/0x10 drivers/net/macvlan.c:309 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145894][ T6232] ? __pfx= _process_one_work+0x10/0x10 include/linux/list.h:153 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145907][ T6232] ? assig= n_work+0x1a0/0x250 kernel/workqueue.c:1200 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145922][ T6232] process= _scheduled_works kernel/workqueue.c:3310 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145922][ T6232] worker_= thread+0x6c8/0xf00 kernel/workqueue.c:3391 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145937][ T6232] ? __pfx= _worker_thread+0x10/0x10 include/linux/list.h:183 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[9035]: ps_bpf_start_bpf: bpf_op= en: Invalid argument Nov 11 21:02:33 syzkaller daemon.err dhcpcd[9035]: ps_root_recvmsg: Invalid= argument Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145946][ T6232] kthread= +0x2c1/0x3a0 kernel/kthread.c:389 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[9030]: ps_bpf_start_bpf: bpf_op= en: Invalid argument Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145957][ T6232] ? __raw= _spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145957][ T6232] ? _raw_= spin_unlock_irq+0x23/0x50 kernel/locking/spinlock.c:202 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[9030]: ps_root_recvmsg: Invalid= argument Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145969][ T6232] ? __pfx= _kthread+0x10/0x10 include/linux/list.h:373 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145981][ T6232] ret_fro= m_fork+0x45/0x80 arch/x86/kernel/process.c:147 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.145990][ T6232] ? __pfx= _kthread+0x10/0x10 include/linux/list.h:373 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146001][ T6232] ret_fro= m_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146020][ T6232] Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146025][ T6232]=20 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146028][ T6232] =3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146031][ T6232] WARNING:= suspicious RCU usage Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146034][ T6232] 6.12.0-r= c7-syzkaller #0 Not tainted Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146040][ T6232] --------= --------------------- Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146043][ T6232] include/= linux/rtnetlink.h:100 suspicious rcu_dereference_protected() usage! Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146050][ T6232]=20 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146050][ T6232] other in= fo that might help us debug this: Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146050][ T6232]=20 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146053][ T6232]=20 Nov 11 21:02:33 syzkaller daemon.err dhcNov 11 21:02:33 syzkaller kern.wNov= 11 21:02:33 Nov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daem= onNov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21= :02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzk= aller kern.wNov 11 21:02:33 Nov 11 21:02:33 syzkaller kern.warn kernel: [ = 96.146151][ T623Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev= : receNov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 1= 1 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:33 = syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzkaller k= ern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzkaller kern.warn ke= rnel: [ Nov 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzkaller kern.wN= ov 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzkaller kern.wNov 11 21:02= :33 syzkaller daemonNov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkall= er daemonNov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemonNo= v 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:= 33 syzkaller kern.wNov 11 21:02:33 syzkaller daemon.err dhcpcd[5661Nov 11 2= 1:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemon.err dhcpcd[5661Nov= 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:3= 3 Nov 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzkaller kern.wNov 11 21= :02:33 syzkaller daemonNov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzk= aller daemonNov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemo= nNov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemon.err dhcpc= d[5661]: libudev: receNov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 Nov 1= 1 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:33 = syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzkaller k= ern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzkaller kern.warn ke= rnel: [ 96.146396][ T6232] ? trace_lockNov 11 21:02:33 syzkaller daemonN= ov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02= :33 syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzkall= er kern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzkaller kern.wNo= v 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzkaller kern.wNov 11 21:02:= 33 syzkaller daemonNov 11 21:02:33 syzkaller kern.warn kernel: [ 96.14646= 1][ T6232] ? __pfx_process_one_work+0x10/0x10 include/linux/list.h:153 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146474][ T6232] ? assig= n_work+0x1a0/0x250 kernel/workqueue.c:1200 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146489][ T6232] process= _scheduled_works kernel/workqueue.c:3310 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146489][ T6232] worker_= thread+0x6c8/0xf00 kernel/workqueue.c:3391 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146503][ T6232] ? __pfx= _worker_thread+0x10/0x10 include/linux/list.h:183 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146513][ T6232] kthread= +0x2c1/0x3a0 kernel/kthread.c:389 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146523][ T6232] ? __raw= _spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146523][ T6232] ? _raw_= spin_unlock_irq+0x23/0x50 kernel/locking/spinlock.c:202 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146536][ T6232] ? __pfx= _kthread+0x10/0x10 include/linux/list.h:373 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146547][ T6232] ret_fro= m_fork+0x45/0x80 arch/x86/kernel/process.c:147 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146555][ T6232] ? __pfx= _kthread+0x10/0x10 include/linux/list.h:373 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146567][ T6232] ret_fro= m_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.146585][ T6232] Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.err kernel: [ 96.333328][ T6232] BUG: slee= ping function called from invalid context at kernel/locking/rwsem.c:1523 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.err kernel: [ 96.335759][ T6232] in_atomic= (): 0, irqs_disabled(): 0, non_block: 0, pid: 6232, name: kworker/u32:32 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.err kernel: [ 96.338277][ T6232] preempt_c= ount: 0, expected: 0 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.err kernel: [ 96.339800][ T6232] RCU nest = depth: 1, expected: 0 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.341338][ T6232] 3 locks = held by kworker/u32:32/6232: Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.342995][ T6232] #0: fff= f88804b8f2948 ((wq_completion)bond0#3){+.+.}-{0:0}, at: process_one_work+0x= 129b/0x1ba0 kernel/workqueue.c:3204 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.345823][ T6232] #1: fff= fc900033c7d80 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at= : process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.348943][ T6232] #Nov 11= 21:02:33 Nov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 Nov 11 21:02:33 N= ov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 syzkaller daemonNov 11 21:02= :33 syzkaller kern.wNov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 Nov 11 = 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 No= v 11 21:02:33 Nov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller dae= mon.err dhcpcd[5661Nov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 syzkalle= r kern.wNov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 Nov= 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 syzkaller daem= onNov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21= :02:33 Nov 11 21:02:33 Nov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 Nov = 11 21:02:33 syzkaller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:33= syzkaller kern.wNov 11 21:02:33 Nov 11 21:02:33 Nov 11 21:02:33 syzkaller = daemonNov 11 21:02:33 syzkaller kern.wNov 11 21:02:33 Nov 11 21:02:33 syzka= ller kern.wNov 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzkaller kern.w= Nov 11 21:02:33 syzkaller daemonNov 11 21:02:33 syzkaller kern.warn kernel:= [ 96.391355][ T6232] ? __pfx_ethtool_op_get_link+0x10/0x10 net/ethtool/= ioctl.c:2712 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.393047][ T6232] ethtool= _op_get_link+0x1d/0x70 net/ethtool/ioctl.c:62 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.394857][ T6232] bond_ch= eck_dev_link+0x197/0x490 drivers/net/bonding/bond_main.c:873 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.396472][ T6232] ? __pfx= _bond_check_dev_link+0x10/0x10 drivers/net/bonding/bond_main.c:4594 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.398445][ T6232] ? rcu_i= s_watching_curr_cpu include/linux/context_tracking.h:128 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.398445][ T6232] ? rcu_i= s_watching+0x12/0xc0 kernel/rcu/tree.c:737 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.399965][ T6232] bond_mi= imon_inspect drivers/net/bonding/bond_main.c:2717 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.399965][ T6232] bond_mi= i_monitor+0x3c1/0x2d90 drivers/net/bonding/bond_main.c:2939 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.401543][ T6232] ? __pfx= _bond_mii_monitor+0x10/0x10 drivers/net/bonding/bond_main.c:2806 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.403142][ T6232] ? rcu_i= s_watching_curr_cpu include/linux/context_tracking.h:128 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.403142][ T6232] ? rcu_i= s_watching+0x12/0xc0 kernel/rcu/tree.c:737 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.404629][ T6232] ? trace= _lock_acquire+0x14a/0x1d0 include/trace/events/lock.h:24 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.406212][ T6232] ? proce= ss_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.407857][ T6232] ? lock_= acquire+0x2f/0xb0 kernel/locking/lockdep.c:5796 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.409307][ T6232] ? proce= ss_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.410910][ T6232] process= _one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.412468][ T6232] ? __pfx= _macvlan_process_broadcast+0x10/0x10 drivers/net/macvlan.c:309 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.414179][ T6232] ? __pfx= _process_one_work+0x10/0x10 include/linux/list.h:153 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.415769][ T6232] ? assig= n_work+0x1a0/0x250 kernel/workqueue.c:1200 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.417321][ T6232] process= _scheduled_works kernel/workqueue.c:3310 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.417321][ T6232] worker_= thread+0x6c8/0xf00 kernel/workqueue.c:3391 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.418756][ T6232] ? __pfx= _worker_thread+0x10/0x10 include/linux/list.h:183 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.420279][ T6232] kthread= +0x2c1/0x3a0 kernel/kthread.c:389 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.421514][ T6232] ? __raw= _spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.421514][ T6232] ? _raw_= spin_unlock_irq+0x23/0x50 kernel/locking/spinlock.c:202 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.423050][ T6232] ? __pfx= _kthread+0x10/0x10 include/linux/list.h:373 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.424425][ T6232] ret_fro= m_fork+0x45/0x80 arch/x86/kernel/process.c:147 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.425840][ T6232] ? __pfx= _kthread+0x10/0x10 include/linux/list.h:373 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.427212][ T6232] ret_fro= m_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.428635][ T6232] Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.429829][ T6232]=20 Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.430587][ T6232] =3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D Nov 11 21:02:33 syzkaller daemon.err dhcpcd[5661]: libudev: received NULL d= evice Nov 11 21:02:33 syzkaller kern.warn kernel: [ 96.4 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup