From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo2-f8.google.com (mail-oo2-f8.google.com [74.125.231.136]) (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 6BF0B37F726 for ; Mon, 14 Sep 2026 21:27:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.231.136 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789421244; cv=none; b=c55CZliPaaoVlU5rpunJOZjG18JpZ4e+4Y1FMyAP4A3erSD08vbvqcbXKlhZOSxH0ecIxbz6rbvtchKPQ26YhtnK0mFWdBP9HYZWfOsPmQ75l0BhYQerPano+6jb7UCxzFIR9nfyZZsdC8bEnwycNDehAI+fwwrLotONaR9qKL8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789421244; c=relaxed/simple; bh=AEACGB8RuVSalid/zfU7q+lhkfwiiELVlg/P+9oPV60=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=XO8G5M2jeG1WvCO37OYfopsdU4aYY0eksIAFkssEL/GSPZnZ+6zlEPeQnI6a5iHE5IOJByKmO126OtzekCdeLtEx42CnxjVikg7cgmVYsxAxaphHXZQ0EBEkLdasLF2jiSkJnUN8ccBl+T2Xjvz6lPphNFdP+HGycGGP97GBuwE= 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=74.125.231.136 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-oo2-f8.google.com with SMTP id 006d021491bc7-6b12d30261cso1073052eaf.0 for ; Mon, 14 Sep 2026 14:27:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789421241; x=1790026041; h=content-transfer-encoding:content-type:to:from:subject:message-id :date:mime-version:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=MvTOuoUEOFOEOY/RihZs4NnWfA+1/+2IGlAZE7o78mk=; b=O9ZQh7FffpWV6DfMJjknuAS74r4XK50W1l9c40wE0m1QZgHuvbc1rCr4WO4YHxsM9a Y+rAg1xJPRaETBDjsDhCO3Zw5INYsW1LT3ofwkxbPi41UMEZ/zUDvojnHUYtac4+qqUi Hknd59BcSknkS39k86rEAcOHdtak/60ei7wF/lQ4UNOJyRervSfMXHNLTMr4YbyrpoIF E3tTK2Q2wGajG1Zt3JtRPRMDMH7fSmToP+LbVgSFEVVDMIFowaOiJkG3woq/Kn1J4NgH CGQ/h12xOg4bDe+Qg72D0wCSZpWvLfQH9X5qooJ0qpS5sJ/xlbaB3XYSLjlMZbx1NS2p X1tQ== X-Forwarded-Encrypted: i=1; AKwUvBxAPj3HT1SXlmbdzDS3arVOHBZ6MHnnwleOuOO4FQ7waXmUrjmjOVT+o76eMBmeW+SuKa7HLAE1MHf2XOo=@vger.kernel.org X-Gm-Message-State: AFuF++lpVDt6JOm+dx4JEDgJzWHPcqgIcJ7w9+inRIzy1bnx5miQPQ3D 9PPRz0zTiNqNpkQ6ngOTg7ElmCyt8/qLJoqipREUJWjYW4wEDRBZE6HdyGgxaJqGOw+vTV1BXD3 cXSQk6WxBPGwEQSsaxaB7PCknoNFd5N+yFW4Rhg72oR0SJ0f+ZBU8B28MSCA= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4de3:b0:6b9:6c3c:9492 with SMTP id 006d021491bc7-6c542d250afmr2545261eaf.64.1789421241205; Mon, 14 Sep 2026 14:27:21 -0700 (PDT) Date: Mon, 14 Sep 2026 14:27:21 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aa866b9.a211d2ce.1a5198.029c.GAE@google.com> Subject: [syzbot] [arm?] BUG: workqueue lockup in wg_packet_encrypt_worker From: syzbot To: Jason@zx2c4.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, wireguard@lists.zx2c4.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot found the following issue on: HEAD commit: 5445d6419962 arm64: Don't read GMID_EL1 when MTE is disable= d git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.g= it for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=3D17fa6925580000 kernel config: https://syzkaller.appspot.com/x/.config?x=3D56ed23170c168d4= c dashboard link: https://syzkaller.appspot.com/bug?extid=3Dce2a09d03fdc079a4= 6e9 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-= 1~exp1~20260613092250.77), Debian LLD 22.1.8 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/e8b70e3bd109/disk-= 5445d641.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/e5227e56ac93/vmlinux-= 5445d641.xz kernel image: https://storage.googleapis.com/syzbot-assets/54905f78be59/Ima= ge-5445d641.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit= : Reported-by: syzbot+ce2a09d03fdc079a46e9@syzkaller.appspotmail.com BUG: workqueue lockup - pool cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 stuck f= or 47s! Showing busy workqueues and worker pools: workqueue events: flags=3D0x100 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D14 refcnt=3D15 pending: 4*nsim_dev_hwstats_traffic_work, vmstat_shepherd, psi_avgs_wor= k, free_obj_work, 3*ovs_dp_masks_rebalance, 4*psi_avgs_work pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D4 refcnt=3D5 in-flight: 24:reg_todo for 142s pending: 3*nsim_dev_hwstats_traffic_work workqueue events_unbound: flags=3D0x2 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D14 refcnt=3D15 in-flight: 12:cfg80211_wiphy_work for 140s cfg80211_wiphy_work ,59:cfg8= 0211_wiphy_work for 132s cfg80211_wiphy_work ,42:cfg80211_wiphy_work for 14= 4s cfg80211_wiphy_work ,40:cfg80211_wiphy_work for 125s cfg80211_wiphy_work= ,1241:cfg80211_wiphy_work for 145s cfg80211_wiphy_work ,1165:cfg80211_wiph= y_work for 145s cfg80211_wiphy_work pending: 2*macvlan_process_broadcast pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D10 refcnt=3D11 in-flight: 8217:nsim_dev_trap_report_work for 0s pending: 2*nsim_dev_trap_report_work, crng_reseed, toggle_allocation_ga= te, 4*nsim_dev_trap_report_work, flush_memcg_stats_dwork workqueue events_power_efficient: flags=3D0x82 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D2 in-flight: 1425:reg_check_chans_work for 73s pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D9 refcnt=3D10 in-flight: 1162:crda_timeout_work for 127s ,1254:check_lifetime for 110= s ,8218:gc_worker for 10s pending: hash_ipportip4_gc, fb_flashcursor, nf_flow_offload_work_gc, 2*= neigh_managed_work, wg_ratelimiter_gc_entries workqueue events_dfl_long: flags=3D0x2 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D6 refcnt=3D7 pending: 6*defense_work_handler workqueue rcu_gp: flags=3D0x108 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: srcu_invoke_callbacks workqueue netns: flags=3D0x6000a pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D6 MAYDAY in-flight: 8(RESCUER):cleanup_net for 138s workqueue mm_percpu_wq: flags=3D0x108 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: vmstat_update workqueue ipv6_addrconf: flags=3D0x6000a pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D12 MAYDAY in-flight: 2822(RESCUER):addrconf_verify_work for 84s inactive: 6*addrconf_verify_work workqueue bat_events: flags=3D0x6000a pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D50 MAYDAY in-flight: 2854(RESCUER):batadv_tt_purge for 8s pending: mayday_cursor_func inactive: batadv_dat_purge, 2*batadv_bla_periodic_work, 2*batadv_dat_pu= rge, batadv_bla_periodic_work, 2*batadv_iv_send_outstanding_bat_ogm_packet,= batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_p= eriodic_work, batadv_purge_orig, 2*batadv_iv_send_outstanding_bat_ogm_packe= t, 6*batadv_mcast_mla_update, 4*batadv_iv_send_outstanding_bat_ogm_packet, = batadv_purge_orig, 6*batadv_iv_send_outstanding_bat_ogm_packet, 3*batadv_pu= rge_orig, batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, bat= adv_dat_purge, batadv_bla_periodic_work, 5*batadv_tt_purge workqueue wg-kex-wg0: flags=3D0x124 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 in-flight: 4710:wg_packet_handshake_receive_worker for 52s pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg0: flags=3D0x6 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D2 in-flight: 8221:wg_packet_handshake_send_worker for 0s workqueue wg-crypt-wg0: flags=3D0x128 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D5 refcnt=3D6 in-flight: 4817:wg_packet_encrypt_worker for 47s ,4306:wg_packet_tx_wor= ker for 47s pending: wg_packet_decrypt_worker, wg_packet_tx_worker, wg_packet_encry= pt_worker workqueue wg-kex-wg1: flags=3D0x124 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_receive_worker pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 in-flight: 8225:wg_packet_handshake_receive_worker for 2s workqueue wg-kex-wg1: flags=3D0x6 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D2 in-flight: 14:wg_packet_handshake_send_worker for 20s workqueue wg-crypt-wg1: flags=3D0x128 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 pending: wg_packet_decrypt_worker, wg_packet_tx_worker, wg_packet_encry= pt_worker workqueue wg-kex-wg2: flags=3D0x124 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg2: flags=3D0x128 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue bond0: flags=3D0x2000a pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D5 MAYDAY pending: bond_arp_monitor workqueue wg-crypt-wg0: flags=3D0x128 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_= tx_worker workqueue wg-kex-wg1: flags=3D0x124 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 in-flight: 9:wg_packet_handshake_receive_worker for 48s pending: wg_packet_handshake_receive_worker pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 in-flight: 26:wg_packet_handshake_receive_worker for 44s wg_packet_hand= shake_receive_worker workqueue wg-kex-wg1: flags=3D0x6 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D2 refcnt=3D3 in-flight: 8216:wg_packet_handshake_send_worker for 0s pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=3D0x128 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_= tx_worker workqueue wg-kex-wg2: flags=3D0x124 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg2: flags=3D0x6 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=3D0x128 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-crypt-wg0: flags=3D0x128 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=3D0x6 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D2 refcnt=3D3 pending: 2*wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=3D0x128 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-kex-wg2: flags=3D0x6 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D2 refcnt=3D3 pending: 2*wg_packet_handshake_send_worker workqueue krds_cp_wq#2/0: flags=3D0x20002 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D4 in-flight: 8219:rds_connect_worker for 11s workqueue wg-kex-wg0: flags=3D0x124 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_receive_worker pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 in-flight: 4902:wg_packet_handshake_receive_worker for 3s workqueue wg-kex-wg0: flags=3D0x6 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=3D0x128 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 in-flight: 865:wg_packet_tx_worker for 53s wg_packet_tx_worker pending: wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=3D0x124 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 in-flight: 4802:wg_packet_handshake_receive_worker for 51s pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg1: flags=3D0x128 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-kex-wg2: flags=3D0x124 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg2: flags=3D0x6 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=3D0x128 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 pending: wg_packet_decrypt_worker, wg_packet_tx_worker, wg_packet_encry= pt_worker pool 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 hung=3D47s workers=3D10 idle= : 10 4809 4898 4708 pool 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 hung=3D0s workers=3D9 idle: = 8222 5105 8220 1089 4812 pool 8: cpus=3D0-1 flags=3D0x6 nice=3D0 hung=3D0s workers=3D16 manager: 822= 3 Showing backtraces of busy workers in stalled worker pools: pool 2: task:kworker/0:8 state:R running task stack:0 pid:4817 tgid:4= 817 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5520 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7270 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7449 preempt_schedule+0x60/0x78 kernel/sched/core.c:7473 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:480 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:237 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:245 spin_unlock_bh include/linux/spinlock.h:407 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:399 [inline] wg_packet_encrypt_worker+0x25c/0x1290 drivers/net/wireguard/send.c:293 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838 pool 2: task:kworker/0:2 state:R running task stack:0 pid:865 tgid:8= 65 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg0 wg_packet_tx_worker Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5520 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7270 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7449 preempt_schedule+0x60/0x78 kernel/sched/core.c:7473 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:480 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:923 [inline] mod_peer_timer+0x21c/0x25c drivers/net/wireguard/timers.c:38 wg_timers_any_authenticated_packet_traversal+0x98/0xc0 drivers/net/wiregua= rd/timers.c:218 wg_packet_create_data_done drivers/net/wireguard/send.c:247 [inline] wg_packet_tx_worker+0x130/0x75c drivers/net/wireguard/send.c:276 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838 pool 2: task:kworker/0:5 state:R running task stack:0 pid:4710 tgid:4= 710 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-kex-wg0 wg_packet_handshake_receive_worker Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5520 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7270 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7449 preempt_schedule+0x60/0x78 kernel/sched/core.c:7473 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:480 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:923 [inline] wg_packet_create_data drivers/net/wireguard/send.c:325 [inline] wg_packet_send_staged_packets+0xc34/0x1124 drivers/net/wireguard/send.c:38= 8 wg_packet_send_keepalive+0x144/0x248 drivers/net/wireguard/send.c:239 wg_receive_handshake_packet drivers/net/wireguard/receive.c:186 [inline] wg_packet_handshake_receive_worker+0x5c8/0xcf8 drivers/net/wireguard/recei= ve.c:213 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838 pool 2: task:kworker/0:6 state:R running task stack:0 pid:4802 tgid:4= 802 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5520 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7270 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7449 preempt_schedule+0x60/0x78 kernel/sched/core.c:7473 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:480 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:923 [inline] mod_peer_timer+0x21c/0x25c drivers/net/wireguard/timers.c:38 wg_timers_session_derived+0x5c/0x6c drivers/net/wireguard/timers.c:208 wg_packet_send_handshake_response+0x118/0x264 drivers/net/wireguard/send.c= :98 wg_receive_handshake_packet drivers/net/wireguard/receive.c:154 [inline] wg_packet_handshake_receive_worker+0x570/0xcf8 drivers/net/wireguard/recei= ve.c:213 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838 pool 2: task:kworker/0:0 state:R running task stack:0 pid:9 tgid:9= ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5520 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7270 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7449 preempt_schedule+0x60/0x78 kernel/sched/core.c:7473 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:480 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:923 [inline] wg_noise_handshake_begin_session+0x698/0x958 drivers/net/wireguard/noise.c= :856 wg_packet_send_handshake_response+0x108/0x264 drivers/net/wireguard/send.c= :96 wg_receive_handshake_packet drivers/net/wireguard/receive.c:154 [inline] wg_packet_handshake_receive_worker+0x570/0xcf8 drivers/net/wireguard/recei= ve.c:213 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838 pool 2: task:kworker/0:3 state:R running task stack:0 pid:4306 tgid:4= 306 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg0 wg_packet_tx_worker Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5520 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7270 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7449 preempt_schedule+0x60/0x78 kernel/sched/core.c:7473 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:480 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:923 [inline] keep_key_fresh drivers/net/wireguard/send.c:135 [inline] wg_packet_create_data_done drivers/net/wireguard/send.c:259 [inline] wg_packet_tx_worker+0x6bc/0x75c drivers/net/wireguard/send.c:276 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838 --- 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