INFO: task syz-executor.2:16907 can't die for more than 143 seconds. task:syz-executor.2 state:D stack:25256 pid:16907 ppid: 15480 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:4327 [inline] __schedule+0x8eb/0x21b0 kernel/sched/core.c:5078 schedule+0xcf/0x270 kernel/sched/core.c:5157 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5216 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103 ip_fib_net_exit+0x1b/0x2b0 net/ipv4/fib_frontend.c:1544 ops_exit_list+0xb0/0x160 net/core/net_namespace.c:187 setup_net+0x508/0x850 net/core/net_namespace.c:365 copy_net_ns+0x376/0x7b0 net/core/net_namespace.c:483 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 copy_namespaces+0x3e5/0x4a0 kernel/nsproxy.c:178 copy_process+0x2aa7/0x6fe0 kernel/fork.c:2103 kernel_clone+0xe7/0xad0 kernel/fork.c:2465 __do_sys_clone+0xc8/0x110 kernel/fork.c:2582 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e149 RSP: 002b:00007ffbee8d2c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e149 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000701a2100 RBP: 000000000119bfd0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffc0b1cdb8f R14: 00007ffbee8d39c0 R15: 000000000119bf8c Showing all locks held in the system: 2 locks held by kworker/u4:1/25: 4 locks held by kworker/u4:2/44: 1 lock held by khungtaskd/1665: #0: ffffffff8b78f920 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x28c kernel/locking/lockdep.c:6254 3 locks held by kworker/1:2/4156: #0: ffff888010862d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010862d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888010862d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888010862d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888010862d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888010862d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x1630 kernel/workqueue.c:2246 #1: ffffc90004befda8 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1630 kernel/workqueue.c:2250 #2: ffffffff8d0dc6a8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:74 1 lock held by in:imklog/8223: #0: ffff8880185d0d70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:923 3 locks held by kworker/0:7/14645: #0: ffff888010862d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010862d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888010862d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888010862d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888010862d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888010862d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x1630 kernel/workqueue.c:2246 #1: ffffc9000367fda8 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1630 kernel/workqueue.c:2250 #2: ffffffff8d0dc6a8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:250 2 locks held by syz-executor.2/16907: #0: ffffffff8d0c1950 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x352/0x7b0 net/core/net_namespace.c:479 #1: ffffffff8d0dc6a8 (rtnl_mutex){+.+.}-{3:3}, at: ip_fib_net_exit+0x1b/0x2b0 net/ipv4/fib_frontend.c:1544 2 locks held by syz-executor.5/16991: #0: ffffffff8d0c1950 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x352/0x7b0 net/core/net_namespace.c:479 #1: ffffffff8d0dc6a8 (rtnl_mutex){+.+.}-{3:3}, at: fib6_rules_net_exit+0xe/0x50 net/ipv6/fib6_rules.c:496 1 lock held by syz-executor.1/17072: #0: ffffffff8d0dc6a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d0dc6a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x443/0xb80 net/core/rtnetlink.c:5561 1 lock held by syz-executor.3/17282: #0: ffffffff8d0dc6a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d0dc6a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x443/0xb80 net/core/rtnetlink.c:5561 2 locks held by syz-executor.4/17344: #0: ffffffff8d0c1950 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x352/0x7b0 net/core/net_namespace.c:479 #1: ffffffff8d0dc6a8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 net/core/dev.c:10157 1 lock held by syz-executor.0/17416: #0: ffffffff8d0dc6a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8d0dc6a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x443/0xb80 net/core/rtnetlink.c:5561 =============================================