From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi2-f0.google.com (mail-oi2-f0.google.com [74.125.231.192]) (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 996613AA1BF for ; Tue, 15 Sep 2026 21:33:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.231.192 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789508027; cv=none; b=JqMs5L3ch1NU469jeWWg398wIKQZYuLxoYCG0ansCQtgm8cNWulwq8nbj4CK62eLzPVpVkeDzxc1CeTS6ePpl9jlDmouxS6UrqWl47xtc/DnxxyvzaISD7a+Fg8JeOpM+WdhrGk0pXZRThQ2WNaGZZ2FltpTgGUuh7BmbKzX0v4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789508027; c=relaxed/simple; bh=rJy1/4VAIH6j4bH3PhEclO04Ip7pqku0TrNVjMjmLzs=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=lpIix+XHdDMDVTmkHPfh3yq86vlQQN5d9zwwCY2n8xzsHIFtT28DbUk8DbUvXdds9icMBMqBgyUAkZcn0IIJgTlL2Os8yHL54I2z7sX2C2Vs/Vfb3cD6/0nGDiytP3IePADL2Ue4/Kajj+71eMi4iq6f4t1hci2WgEqmYEP4e9w= 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=74.125.231.192 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-oi2-f0.google.com with SMTP id 5614622812f47-4a4492f5cd1so825676b6e.1 for ; Tue, 15 Sep 2026 14:33:44 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789508023; x=1790112823; 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=2sS1ijsvVV0SDkEUN/Ki5tflNB8j3+HYujKSndllF1k=; b=n0g7wYSq5anaJBnvjHzfwYcvu+JmLzemQ8sR0nSSzKd4QvVuo6ujG9AoeAR8/nBAh+ QdU11g4ppBO6gBy/oEVRrg97/KqG7xIBTbQ4wmeaVC7S89Disj/NnpHdrOSDHctMyjQG +emwF61HM2cMFsMfCRpfhDRjK0aq7DNtmodlAGiVzZIEZ/ULMoGP67PyNgmRRDhiSrVd ZbYBxUoITUv/4GXPS9ax/PVo74vQXzywutuJ3MAGZrZx7QXcNR205J5kej4VnOFAogcr Zev3YDDKw474hwhX+fMm+MjV0kwP0GY3ZOWLUfKwYNwfgeimsL9PTD6QAtGIvYsj/hDk 4UDA== X-Forwarded-Encrypted: i=1; AKwUvBwbXIjb1xBZ9dVwmpycBfIMQOPIqGvrEFo0lXZciNLPRQ/d2i/wAfzeQjrvUwAEsXDGo3j9lmgxoOVPfHc=@vger.kernel.org X-Gm-Message-State: AFuF++n/o9bJLhcGx6ufJyZHw6YhVZqZ3RUFv1HNwJu7I16YwC6FLhQP Cm64nuLOkhO/e3nqIlLpOUvtt4PT5XPAmNjB5UpNFXm0z5Aw97GC1nNWZymBT5in8CQ2Rv95zey rkXE9/MY8PfXvzmc9DqwlXUrwzUrlEpoLWB20b+61F2FXe/85FhhTd5E034A= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:1409:b0:4c3:ebb:6405 with SMTP id 5614622812f47-4ca4c282440mr226899b6e.32.1789508023539; Tue, 15 Sep 2026 14:33:43 -0700 (PDT) Date: Tue, 15 Sep 2026 14:33:43 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aa9b9b7.f81106d8.2ab401.006f.GAE@google.com> Subject: [syzbot] [wireguard?] BUG: workqueue lockup in wg_packet_decrypt_worker From: syzbot To: Jason@zx2c4.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.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=3D1114c2d1580000 kernel config: https://syzkaller.appspot.com/x/.config?x=3D56ed23170c168d4= c dashboard link: https://syzkaller.appspot.com/bug?extid=3Dd0d2f1a65f45b319d= 25d 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+d0d2f1a65f45b319d25d@syzkaller.appspotmail.com BUG: workqueue lockup - pool cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 stuck f= or 45s! Showing busy workqueues and worker pools: workqueue events: flags=3D0x100 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D6 refcnt=3D7 pending: vmstat_shepherd, 2*psi_avgs_work, 3*ovs_dp_masks_rebalance pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D18 refcnt=3D19 pending: 2*psi_avgs_work, 3*ovs_dp_masks_rebalance, xfrm_state_gc_task,= psi_avgs_work, delayed_vfree_work, 8*nsim_dev_hwstats_traffic_work, psi_av= gs_work, free_obj_work workqueue events_unbound: flags=3D0x2 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D20 refcnt=3D21 in-flight: 3055:cfg80211_wiphy_work for 75s cfg80211_wiphy_work ,54:nsi= m_dev_trap_report_work for 6s ,431:cfg80211_wiphy_work for 73s cfg80211_wip= hy_work ,348:cfg80211_wiphy_work for 91s cfg80211_wiphy_work ,1617:cfg80211= _wiphy_work for 76s cfg80211_wiphy_work ,12:cfg80211_wiphy_work for 93s cfg= 80211_wiphy_work ,1777:nsim_dev_trap_report_work for 11s ,40:cfg80211_wiphy= _work for 92s cfg80211_wiphy_work ,3203:nsim_dev_trap_report_work for 1s pending: nsim_dev_trap_report_work, toggle_allocation_gate, 2*nsim_dev_= trap_report_work, cfg80211_wiphy_work pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D7 refcnt=3D8 in-flight: 13:linkwatch_event for 95s ,3020:cfg80211_wiphy_work for 89s= cfg80211_wiphy_work ,3157:cfg80211_wiphy_work for 60s cfg80211_wiphy_work pending: 2*nsim_dev_trap_report_work workqueue events_power_efficient: flags=3D0x82 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D6 refcnt=3D7 in-flight: 1756:neigh_periodic_work for 6s ,284:reg_check_chans_work fo= r 75s pending: neigh_periodic_work, wg_ratelimiter_gc_entries, 2*neigh_manage= d_work pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D2 pending: gc_worker 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 mm_percpu_wq: flags=3D0x108 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: vmstat_update pwq 6: cpus=3D1 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=3D9 in-flight: 59:addrconf_verify_work for 78s inactive: 5*addrconf_verify_work workqueue bat_events: flags=3D0x6000a pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D45 MAYDAY in-flight: 2855(RESCUER):batadv_tt_purge for 18s inactive: batadv_tt_purge, batadv_mcast_mla_update, batadv_tt_purge, ba= tadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, 2*batadv_bla_pe= riodic_work, batadv_dat_purge, batadv_mcast_mla_update, batadv_bla_periodic= _work, batadv_dat_purge, 2*batadv_mcast_mla_update, 2*batadv_iv_send_outsta= nding_bat_ogm_packet, batadv_purge_orig, 3*batadv_iv_send_outstanding_bat_o= gm_packet, 2*batadv_purge_orig, 5*batadv_iv_send_outstanding_bat_ogm_packet= , batadv_purge_orig, batadv_iv_send_outstanding_bat_ogm_packet, batadv_mcas= t_mla_update, 4*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_ori= g, batadv_bla_periodic_work, batadv_dat_purge, 2*batadv_tt_purge workqueue wg-kex-wg0: flags=3D0x124 pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 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 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=3D0x128 pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 pending: 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: 10:wg_packet_handshake_receive_worker for 46s pending: wg_packet_handshake_receive_worker pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg1: flags=3D0x6 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=3D0x128 pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decry= pt_worker workqueue wg-kex-wg0: flags=3D0x6 pwq 8: cpus=3D0-1 flags=3D0x6 nice=3D0 active=3D1 refcnt=3D2 in-flight: 3495:wg_packet_handshake_send_worker for 4s workqueue wg-crypt-wg0: flags=3D0x128 pwq 6: cpus=3D1 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 in-flight: 4477:wg_packet_handshake_receive_worker for 12s pwq 6: cpus=3D1 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=3D2 refcnt=3D3 pending: 2*wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=3D0x128 pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_= tx_worker workqueue wg-crypt-wg1: flags=3D0x128 pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 pending: 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 in-flight: 9:wg_packet_handshake_receive_worker for 20s pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg2: flags=3D0x128 pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D4 refcnt=3D5 in-flight: 4889:wg_packet_decrypt_worker for 45s pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decry= pt_worker workqueue hci0: flags=3D0x20012 pwq 9: cpus=3D0-1 node=3D0 flags=3D0x4 nice=3D-20 active=3D1 refcnt=3D4 in-flight: 4723:hci_cmd_sync_work for 84s 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 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg0: flags=3D0x128 pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 in-flight: 24:wg_packet_tx_worker for 45s pending: 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=3D1 refcnt=3D2 in-flight: 4799:wg_packet_handshake_receive_worker for 17s pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg1: flags=3D0x128 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_encrypt_worker pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decry= 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 pwq 6: cpus=3D1 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=3D2 refcnt=3D3 pending: 2*wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=3D0x128 pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_= tx_worker workqueue hci3: flags=3D0x20012 pwq 9: cpus=3D0-1 node=3D0 flags=3D0x4 nice=3D-20 active=3D1 refcnt=3D4 in-flight: 4726:hci_cmd_sync_work for 78s workqueue wg-kex-wg0: flags=3D0x124 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 in-flight: 4840:wg_packet_handshake_receive_worker for 11s pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg0: flags=3D0x128 pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=3D0x124 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 in-flight: 4806:wg_packet_handshake_receive_worker for 19s pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg1: flags=3D0x128 pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decry= pt_worker workqueue wg-kex-wg2: flags=3D0x124 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 in-flight: 4827:wg_packet_handshake_receive_worker for 6s pwq 6: cpus=3D1 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=3D1 refcnt=3D2 pending: wg_packet_decrypt_worker pwq 6: cpus=3D1 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-wg0: 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-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 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D2 refcnt=3D3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-crypt-wg1: flags=3D0x128 pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decry= pt_worker workqueue wg-kex-wg2: flags=3D0x124 pwq 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 in-flight: 1159:wg_packet_handshake_receive_worker for 23s pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D1 refcnt=3D2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg2: flags=3D0x128 pwq 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 active=3D3 refcnt=3D4 pending: wg_packet_tx_worker, wg_packet_decrypt_worker, wg_packet_encry= pt_worker pool 2: cpus=3D0 node=3D0 flags=3D0x0 nice=3D0 hung=3D6s workers=3D10 idle:= 4820 4807 pool 6: cpus=3D1 node=3D0 flags=3D0x0 nice=3D0 hung=3D45s workers=3D8 idle:= 5732 5459 26 4798 868 5730 pool 8: cpus=3D0-1 flags=3D0x6 nice=3D0 hung=3D1s workers=3D17 manager: 652= 9 pool 9: cpus=3D0-1 node=3D0 flags=3D0x4 nice=3D-20 hung=3D0s workers=3D8 id= le: 4721 4713 4718 4717 50 4720 Showing backtraces of busy workers in stalled worker pools: pool 6: task:kworker/1:4 state:R running task stack:0 pid:4889 tgid:4= 889 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg2 wg_packet_decrypt_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 kernel/sched/core.c:7473 [inline] class_preempt_destructor include/linux/preempt.h:500 [inline] try_to_wake_up+0x5f8/0xdc4 kernel/sched/core.c:4432 wake_up_process+0x18/0x24 kernel/sched/core.c:4557 process_one_work kernel/workqueue.c:3355 [inline] process_scheduled_works+0x744/0x1250 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 6: task:kworker/1:0 state:R running task stack:0 pid:24 tgid:2= 4 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+0x520/0x75c 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