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Date: Wed, 19 Aug 2020 22:36:19 -0700 From: syzbot <syzbot+22a310041c3467f85d12@...kaller.appspotmail.com> To: davem@...emloft.net, kuba@...nel.org, kuznet@....inr.ac.ru, linux-kernel@...r.kernel.org, netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com, yoshfuji@...ux-ipv6.org Subject: INFO: task can't die in netdev_run_todo Hello, syzbot found the following issue on: HEAD commit: 4993e4fe Add linux-next specific files for 20200814 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1181e1a6900000 kernel config: https://syzkaller.appspot.com/x/.config?x=2055bd0d83d5ee16 dashboard link: https://syzkaller.appspot.com/bug?extid=22a310041c3467f85d12 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=145b6aa6900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+22a310041c3467f85d12@...kaller.appspotmail.com INFO: task syz-executor.1:8005 can't die for more than 143 seconds. syz-executor.1 D25048 8005 1 0x00004004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x8e5/0x21e0 kernel/sched/core.c:4527 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4661 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103 netdev_run_todo+0x705/0xac0 net/core/dev.c:10104 sit_exit_batch_net+0x4ad/0x6c0 net/ipv6/sit.c:1945 --- 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@...glegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
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