From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 35C1BC4332F for ; Tue, 15 Nov 2022 16:56:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238277AbiKOQ4r (ORCPT ); Tue, 15 Nov 2022 11:56:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35570 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231460AbiKOQ4p (ORCPT ); Tue, 15 Nov 2022 11:56:45 -0500 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 952A71D0D4 for ; Tue, 15 Nov 2022 08:56:43 -0800 (PST) Received: by mail-io1-f70.google.com with SMTP id z139-20020a6bc991000000b006dac0d359edso7369189iof.2 for ; Tue, 15 Nov 2022 08:56:43 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=oqXlldeI6HzdmlJnUaj2xoDKV/PnBucoP3pJnDmXiXE=; b=MbUEzVZI6MvUsMbi0CRMUZxzxGf8nXRRHqYZGmPFVLgQChCAncZrDVPeJQx+im4Cjw +4WWqzDgxwUkdR5n65bbqP5OB8oN9+YYUbphwcz7gevV/FDE/BCznuxKm47oVHMMgDSB 8BWKp3w7UFAADW3LlVVrvJi4tvmKTonrSgV/XJh/2uhEqvh8RFN55lOFpAAuJclAinIn nAnzzyK++kd+bdsQNgO52b6jN/bR4j+Y/wWQpSgcHCny8U2vR81ZX8epkId0oeDD+Hnk Upeqmu6/AaAMnKIi3FlMkUT32s3MTtBNsG8vEzcFXTr6Qz0z+OzjV7LwkIOkJu8ID9yV Sxhg== X-Gm-Message-State: ANoB5pkhy0ZGEM8xGy+V4/Gd/R7tNPXgsjbnUKpyu6eT5byTrj6KKD9X 6cQ3ae0lTAC6goONj3QOpWUpoy7XtmmuivAaA6gw7kNG1IOm X-Google-Smtp-Source: AA0mqf4NNNks/yqOYLhgz3pn9z6ClbXOdz29q52HRnnJtcHd0rf8x4Nt6unUcbTh22BAJFdB6Wllp/4swyPoODYrH/iPEXjrCYab MIME-Version: 1.0 X-Received: by 2002:a02:734a:0:b0:375:7ab5:7158 with SMTP id a10-20020a02734a000000b003757ab57158mr8345756jae.160.1668531402941; Tue, 15 Nov 2022 08:56:42 -0800 (PST) Date: Tue, 15 Nov 2022 08:56:42 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000091ae7105ed853d35@google.com> Subject: [syzbot] INFO: task hung in rfkill_global_led_trigger_worker (2) From: syzbot To: davem@davemloft.net, edumazet@google.com, johannes@sipsolutions.net, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: e01d50cbd6ee Merge tag 'vfio-v6.1-rc6' of https://github.c.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=136f6401880000 kernel config: https://syzkaller.appspot.com/x/.config?x=47b0b2ecc119b39f dashboard link: https://syzkaller.appspot.com/bug?extid=2e39bc6569d281acbcfb compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17e85d35880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1579ac01880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/b48e4d485e7e/disk-e01d50cb.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/dc9ba558e055/vmlinux-e01d50cb.xz kernel image: https://storage.googleapis.com/syzbot-assets/b766d9815123/bzImage-e01d50cb.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2e39bc6569d281acbcfb@syzkaller.appspotmail.com INFO: task kworker/0:6:4120 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:6 state:D stack:24024 pid:4120 ppid:2 flags:0x00004000 Workqueue: events rfkill_global_led_trigger_worker Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8c9/0xd70 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 rfkill_global_led_trigger_worker+0x1b/0xf0 net/rfkill/core.c:181 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task syz-executor145:4505 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor145 state:D stack:21896 pid:4505 ppid:3645 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8c9/0xd70 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 rfkill_unregister+0xcb/0x220 net/rfkill/core.c:1130 nfc_unregister_device+0xba/0x290 net/nfc/core.c:1167 virtual_ncidev_close+0x55/0x90 drivers/nfc/virtual_ncidev.c:166 __fput+0x3ba/0x880 fs/file_table.c:320 task_work_run+0x243/0x300 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x664/0x2070 kernel/exit.c:820 do_group_exit+0x1fd/0x2b0 kernel/exit.c:950 __do_sys_exit_group kernel/exit.c:961 [inline] __se_sys_exit_group kernel/exit.c:959 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:959 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc8e3d92af9 RSP: 002b:00007fff2cfab0b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fc8e3e06330 RCX: 00007fc8e3d92af9 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000246 R12: 00007fc8e3e06330 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 INFO: task syz-executor145:4514 blocked for more than 143 seconds. Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor145 state:D stack:23816 pid:4514 ppid:3640 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8c9/0xd70 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 rfkill_fop_release+0x49/0x230 net/rfkill/core.c:1312 __fput+0x3ba/0x880 fs/file_table.c:320 task_work_run+0x243/0x300 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x664/0x2070 kernel/exit.c:820 do_group_exit+0x1fd/0x2b0 kernel/exit.c:950 __do_sys_exit_group kernel/exit.c:961 [inline] __se_sys_exit_group kernel/exit.c:959 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:959 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc8e3d92af9 RSP: 002b:00007fff2cfab0b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fc8e3e06330 RCX: 00007fc8e3d92af9 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000246 R12: 00007fc8e3e06330 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 INFO: task syz-executor145:4516 blocked for more than 144 seconds. Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor145 state:D stack:23096 pid:4516 ppid:3647 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8c9/0xd70 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 device_lock include/linux/device.h:835 [inline] nfc_dev_down+0x33/0x260 net/nfc/core.c:143 nfc_rfkill_set_block+0x28/0xc0 net/nfc/core.c:179 rfkill_set_block+0x1e7/0x430 net/rfkill/core.c:345 rfkill_fop_write+0x5db/0x790 net/rfkill/core.c:1286 vfs_write+0x303/0xc50 fs/read_write.c:582 ksys_write+0x177/0x2a0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc8e3d93e69 RSP: 002b:00007fff2cfab108 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fc8e3d93e69 RDX: 0000000000000008 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000246 R12: 000000000000d60b R13: 00007fff2cfab11c R14: 00007fff2cfab130 R15: 00007fff2cfab120 INFO: task syz-executor145:4517 blocked for more than 144 seconds. Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor145 state:D stack:23816 pid:4517 ppid:3643 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8c9/0xd70 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 misc_open+0x57/0x3c0 drivers/char/misc.c:107 chrdev_open+0x53b/0x5f0 fs/char_dev.c:414 do_dentry_open+0x85f/0x11b0 fs/open.c:882 do_open fs/namei.c:3557 [inline] path_openat+0x25fc/0x2df0 fs/namei.c:3713 do_filp_open+0x264/0x4f0 fs/namei.c:3740 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc8e3d93e69 RSP: 002b:00007fff2cfab108 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fc8e3d93e69 RDX: 0000000000000002 RSI: 0000000020002100 RDI: ffffffffffffff9c RBP: 0000000000000000 R08: 00007fff2cfaab80 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000d60c R13: 00007fff2cfab11c R14: 00007fff2cfab130 R15: 00007fff2cfab120 INFO: task syz-executor145:4518 blocked for more than 144 seconds. Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor145 state:D stack:23816 pid:4518 ppid:3639 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8c9/0xd70 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 misc_open+0x57/0x3c0 drivers/char/misc.c:107 chrdev_open+0x53b/0x5f0 fs/char_dev.c:414 do_dentry_open+0x85f/0x11b0 fs/open.c:882 do_open fs/namei.c:3557 [inline] path_openat+0x25fc/0x2df0 fs/namei.c:3713 do_filp_open+0x264/0x4f0 fs/namei.c:3740 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc8e3d93e69 RSP: 002b:00007fff2cfab108 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fc8e3d93e69 RDX: 0000000000000002 RSI: 0000000020002100 RDI: ffffffffffffff9c RBP: 0000000000000000 R08: 00007fff2cfaab80 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000d60c R13: 00007fff2cfab11c R14: 00007fff2cfab130 R15: 00007fff2cfab120 INFO: task syz-executor145:4519 blocked for more than 144 seconds. Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor145 state:D stack:23816 pid:4519 ppid:3642 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8c9/0xd70 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common+0xe4f/0x26e0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 rfkill_fop_open+0x12f/0x690 net/rfkill/core.c:1163 misc_open+0x346/0x3c0 drivers/char/misc.c:143 chrdev_open+0x53b/0x5f0 fs/char_dev.c:414 do_dentry_open+0x85f/0x11b0 fs/open.c:882 do_open fs/namei.c:3557 [inline] path_openat+0x25fc/0x2df0 fs/namei.c:3713 do_filp_open+0x264/0x4f0 fs/namei.c:3740 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc8e3d93e69 RSP: 002b:00007fff2cfab108 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 00007fc8e3d93e69 RDX: 0000000000022002 RSI: 0000000020000080 RDI: ffffffffffffff9c RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000d64b R13: 00007fff2cfab11c R14: 00007fff2cfab130 R15: 00007fff2cfab120 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8d327330 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8d327b30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/28: #0: ffffffff8d327160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by getty/3308: #0: ffff888145009098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177 3 locks held by kworker/0:6/4120: #0: ffff888012864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0 #1: ffffc90004d0fd00 ((work_completion)(&rfkill_global_led_trigger_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264 #2: ffffffff8e787b08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_global_led_trigger_worker+0x1b/0xf0 net/rfkill/core.c:181 2 locks held by syz-executor145/4505: #0: ffff88807268e100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #0: ffff88807268e100 (&dev->mutex){....}-{3:3}, at: nfc_unregister_device+0x87/0x290 net/nfc/core.c:1165 #1: ffffffff8e787b08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xcb/0x220 net/rfkill/core.c:1130 1 lock held by syz-executor145/4514: #0: ffffffff8e787b08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_release+0x49/0x230 net/rfkill/core.c:1312 2 locks held by syz-executor145/4516: #0: ffffffff8e787b08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1b3/0x790 net/rfkill/core.c:1278 #1: ffff88807268e100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #1: ffff88807268e100 (&dev->mutex){....}-{3:3}, at: nfc_dev_down+0x33/0x260 net/nfc/core.c:143 1 lock held by syz-executor145/4517: #0: ffffffff8da8f368 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x57/0x3c0 drivers/char/misc.c:107 1 lock held by syz-executor145/4518: #0: ffffffff8da8f368 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x57/0x3c0 drivers/char/misc.c:107 2 locks held by syz-executor145/4519: #0: ffffffff8da8f368 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x57/0x3c0 drivers/char/misc.c:107 #1: ffffffff8e787b08 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_open+0x12f/0x690 net/rfkill/core.c:1163 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xcf5/0xd40 kernel/hung_task.c:377 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 6.1.0-rc5-syzkaller-00008-ge01d50cbd6ee #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:write_comp_data kernel/kcov.c:235 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x4/0xa0 kernel/kcov.c:311 Code: f0 48 83 c8 08 48 c7 04 01 05 00 00 00 48 89 f0 48 83 c8 10 48 89 14 01 48 83 ce 18 4c 89 0c 31 4c 89 44 f9 20 c3 4c 8b 04 24 <65> 48 8b 14 25 40 6f 02 00 65 8b 0d 24 d2 77 7e f7 c1 00 01 ff 00 RSP: 0018:ffffc900000e7a78 EFLAGS: 00000246 RAX: ffffffff920114a0 RBX: 0000000000000000 RCX: ffffffff8cd12a50 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff81b5a436 R09: fffff5200001cf3d R10: fffff5200001cf3d R11: 1ffff9200001cf3c R12: 0000000000000020 R13: ffffffff8cd12a30 R14: dffffc0000000000 R15: 1ffffffff19a254b FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f4c9bd9990 CR3: 000000000d08e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __jump_label_update+0xa6/0x3b0 static_key_disable_cpuslocked+0xc8/0x1b0 kernel/jump_label.c:207 static_key_disable+0x16/0x20 kernel/jump_label.c:215 toggle_allocation_gate+0x3b8/0x450 mm/kfence/core.c:814 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 --- This report is generated by a bot. 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