ieee802154 phy1 wpan1: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task kworker/1:0:19 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:0 D25264 19 2 0x80000000 Workqueue: events proc_cleanup_work Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 exp_funnel_lock kernel/rcu/tree_exp.h:320 [inline] _synchronize_rcu_expedited+0x60c/0x6f0 kernel/rcu/tree_exp.h:667 synchronize_rcu+0xc6/0x160 kernel/rcu/tree_plugin.h:818 kern_unmount fs/namespace.c:3295 [inline] kern_unmount+0x67/0xe0 fs/namespace.c:3290 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Showing all locks held in the system: 2 locks held by kworker/1:0/19: #0: 00000000985f096a ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000089014378 ((work_completion)(&ns->proc_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 1 lock held by khungtaskd/1570: #0: 00000000048b1eae (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7777: #0: 00000000270ebe4e (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 2 locks held by agetty/7819: #0: 000000005e7ca057 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 0000000064c19a0f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 3 locks held by kworker/1:3/8425: #0: 00000000985f096a ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000004995b21c ((work_completion)(&ns->proc_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000cab5efe3 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #2: 00000000cab5efe3 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x256/0x6f0 kernel/rcu/tree_exp.h:667 4 locks held by kworker/u4:8/10525: #0: 000000002fcc6881 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000020c0bd6e (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000e3f811ce (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521 #3: 000000000ab32d20 (rtnl_mutex){+.+.}, at: rtnl_lock_unregistering net/core/dev.c:9748 [inline] #3: 000000000ab32d20 (rtnl_mutex){+.+.}, at: default_device_exit_batch+0xea/0x3c0 net/core/dev.c:9786 #3: 00000000adadd9e8 (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #3: 00000000adadd9e8 (&anon_vma->rwsem){++++}, at: anon_vma_clone+0x145/0x5e0 mm/rmap.c:278 4 locks held by syz-executor.2/31546: #0: 00000000ebd9df35 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:435 [inline] #0: 00000000ebd9df35 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1285 [inline] #0: 00000000ebd9df35 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1341 [inline] #0: 00000000ebd9df35 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bb3/0x8260 kernel/fork.c:1913 #1: 000000007a791f4e (&mm->mmap_sem){++++}, at: dup_mmap kernel/fork.c:436 [inline] #1: 000000007a791f4e (&mm->mmap_sem){++++}, at: dup_mm kernel/fork.c:1285 [inline] #1: 000000007a791f4e (&mm->mmap_sem){++++}, at: copy_mm kernel/fork.c:1341 [inline] #1: 000000007a791f4e (&mm->mmap_sem){++++}, at: copy_process.part.0+0x2bcf/0x8260 kernel/fork.c:1913 #2: 00000000f1bb50ea (&mm->mmap_sem/1){+.+.}, at: dup_mmap kernel/fork.c:445 [inline] #2: 00000000f1bb50ea (&mm->mmap_sem/1){+.+.}, at: dup_mm kernel/fork.c:1285 [inline] #2: 00000000f1bb50ea (&mm->mmap_sem/1){+.+.}, at: copy_mm kernel/fork.c:1341 [inline] #2: 00000000f1bb50ea (&mm->mmap_sem/1){+.+.}, at: copy_process.part.0+0x2c1c/0x8260 kernel/fork.c:1913 #3: 0000000072e913d4 (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #3: 0000000072e913d4 (&anon_vma->rwsem){++++}, at: anon_vma_clone+0x145/0x5e0 mm/rmap.c:278 4 locks held by syz-executor.2/31547: #0: 00000000ebd9df35 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:435 [inline] #0: 00000000ebd9df35 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1285 [inline] #0: 00000000ebd9df35 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1341 [inline] #0: 00000000ebd9df35 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bb3/0x8260 kernel/fork.c:1913 #1: 000000003a560783 (&mm->mmap_sem){++++}, at: dup_mmap kernel/fork.c:436 [inline] #1: 000000003a560783 (&mm->mmap_sem){++++}, at: dup_mm kernel/fork.c:1285 [inline] #1: 000000003a560783 (&mm->mmap_sem){++++}, at: copy_mm kernel/fork.c:1341 [inline] #1: 000000003a560783 (&mm->mmap_sem){++++}, at: copy_process.part.0+0x2bcf/0x8260 kernel/fork.c:1913 #2: 000000002a96c983 (&mm->mmap_sem/1){+.+.}, at: dup_mmap kernel/fork.c:445 [inline] #2: 000000002a96c983 (&mm->mmap_sem/1){+.+.}, at: dup_mm kernel/fork.c:1285 [inline] #2: 000000002a96c983 (&mm->mmap_sem/1){+.+.}, at: copy_mm kernel/fork.c:1341 [inline] #2: 000000002a96c983 (&mm->mmap_sem/1){+.+.}, at: copy_process.part.0+0x2c1c/0x8260 kernel/fork.c:1913 1 lock held by syz-executor.2/31671: #0: 00000000ee0410ae (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #0: 00000000ee0410ae (&anon_vma->rwsem){++++}, at: unlink_anon_vmas+0x178/0x840 mm/rmap.c:388 1 lock held by syz-executor.2/31672: #0: 000000006d969517 (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #0: 000000006d969517 (&anon_vma->rwsem){++++}, at: unlink_anon_vmas+0x178/0x840 mm/rmap.c:388 4 locks held by syz-executor.2/31673: #0: 00000000ebd9df35 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:435 [inline] #0: 00000000ebd9df35 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1285 [inline] #0: 00000000ebd9df35 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1341 [inline] #0: 00000000ebd9df35 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bb3/0x8260 kernel/fork.c:1913 #1: 000000002a55b9ba (&mm->mmap_sem){++++}, at: dup_mmap kernel/fork.c:436 [inline] #1: 000000002a55b9ba (&mm->mmap_sem){++++}, at: dup_mm kernel/fork.c:1285 [inline] #1: 000000002a55b9ba (&mm->mmap_sem){++++}, at: copy_mm kernel/fork.c:1341 [inline] #1: 000000002a55b9ba (&mm->mmap_sem){++++}, at: copy_process.part.0+0x2bcf/0x8260 kernel/fork.c:1913 #2: 00000000bc61121e (&mm->mmap_sem/1){+.+.}, at: dup_mmap kernel/fork.c:445 [inline] #2: 00000000bc61121e (&mm->mmap_sem/1){+.+.}, at: dup_mm kernel/fork.c:1285 [inline] #2: 00000000bc61121e (&mm->mmap_sem/1){+.+.}, at: copy_mm kernel/fork.c:1341 [inline] #2: 00000000bc61121e (&mm->mmap_sem/1){+.+.}, at: copy_process.part.0+0x2c1c/0x8260 kernel/fork.c:1913 #3: 00000000adadd9e8 (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #3: 00000000adadd9e8 (&anon_vma->rwsem){++++}, at: anon_vma_clone+0x145/0x5e0 mm/rmap.c:278 1 lock held by syz-executor.2/31674: #0: 0000000072e913d4 (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #0: 0000000072e913d4 (&anon_vma->rwsem){++++}, at: unlink_anon_vmas+0x178/0x840 mm/rmap.c:388 1 lock held by syz-executor.2/31675: #0: 0000000072e913d4 (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #0: 0000000072e913d4 (&anon_vma->rwsem){++++}, at: unlink_anon_vmas+0x178/0x840 mm/rmap.c:388 1 lock held by syz-executor.2/31676: #0: 00000000adadd9e8 (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #0: 00000000adadd9e8 (&anon_vma->rwsem){++++}, at: unlink_anon_vmas+0x178/0x840 mm/rmap.c:388 1 lock held by syz-executor.2/31677: #0: 0000000072e913d4 (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #0: 0000000072e913d4 (&anon_vma->rwsem){++++}, at: unlink_anon_vmas+0x178/0x840 mm/rmap.c:388 1 lock held by syz-executor.2/31678: #0: 00000000ee0410ae (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #0: 00000000ee0410ae (&anon_vma->rwsem){++++}, at: unlink_anon_vmas+0x178/0x840 mm/rmap.c:388 1 lock held by syz-executor.2/31679: #0: 00000000adadd9e8 (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #0: 00000000adadd9e8 (&anon_vma->rwsem){++++}, at: unlink_anon_vmas+0x178/0x840 mm/rmap.c:388 1 lock held by syz-executor.2/31680: #0: 00000000ee0410ae (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #0: 00000000ee0410ae (&anon_vma->rwsem){++++}, at: unlink_anon_vmas+0x178/0x840 mm/rmap.c:388 1 lock held by syz-executor.2/31681: #0: 0000000072e913d4 (&anon_vma->rwsem){++++}, at: lock_anon_vma_root mm/rmap.c:238 [inline] #0: 0000000072e913d4 (&anon_vma->rwsem){++++}, at: unlink_anon_vmas+0x178/0x840 mm/rmap.c:388 1 lock held by syz-executor.2/31682: