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/u4:7:9508 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/u4:7 D26096 9508 2 0x80000000 Workqueue: netns cleanup_net 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 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 cangw_pernet_exit+0xe/0x20 net/can/gw.c:1032 ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554 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: 3 locks held by kworker/u4:0/7: 1 lock held by khungtaskd/1570: #0: 00000000d199e3d1 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 3 locks held by kworker/u4:5/3603: 1 lock held by systemd-journal/4690: 1 lock held by in:imklog/7810: 2 locks held by syz-fuzzer/8112: 1 lock held by syz-executor.0/8145: #0: 000000005d0290b9 (rtnl_mutex){+.+.}, at: tun_detach drivers/net/tun.c:759 [inline] #0: 000000005d0290b9 (rtnl_mutex){+.+.}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3323 2 locks held by syz-executor.3/8148: 3 locks held by kworker/1:3/8367: #0: 00000000bec512a4 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000ba81c5f0 (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005d0290b9 (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 3 locks held by kworker/u4:6/8876: 4 locks held by kworker/u4:7/9508: #0: 0000000041730977 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000049f580ec (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000f3b11e84 (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521 #3: 000000005d0290b9 (rtnl_mutex){+.+.}, at: cangw_pernet_exit+0xe/0x20 net/can/gw.c:1032 3 locks held by kworker/u4:8/10406: 3 locks held by kworker/1:14/11250: #0: 0000000098f3d8db ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000d74376af ((addr_chk_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000005d0290b9 (rtnl_mutex){+.+.}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4476 1 lock held by syz-executor.5/18931: #0: 000000005d0290b9 (rtnl_mutex){+.+.}, at: tun_detach drivers/net/tun.c:759 [inline] #0: 000000005d0290b9 (rtnl_mutex){+.+.}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3323 3 locks held by syz-executor.4/19893: 2 locks held by syz-executor.0/19920: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8876 Comm: kworker/u4:6 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy2 ieee80211_iface_work RIP: 0010:bcm_tx_start_timer+0x116/0x1b0 net/can/bcm.c:387 Code: 00 00 00 00 00 fc ff df 80 3c 02 00 0f 85 9c 00 00 00 48 03 b3 30 01 00 00 48 8d 7b 50 31 c9 31 d2 e8 6e 4a 1e fa 48 83 c4 08 <5b> 5d 41 5c e9 d1 b2 2c fa e8 cc b2 2c fa e8 67 bf 1e fa 4c 89 e2 RSP: 0018:ffff8880ba107e28 EFLAGS: 00000286 RAX: 0000000080000101 RBX: ffff8880aa84f6c0 RCX: 0000000000000000 RDX: 0000000000000004 RSI: ffff888092434c98 RDI: 0000000000000001 RBP: 0000000000000bb8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880aa84f7f0 R13: 0000000000000bb8 R14: ffff8880aa84f790 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa29a82ec18 CR3: 00000000b5258000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bcm_tx_timeout_tsklet+0x13c/0x3a0 net/can/bcm.c:416 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522 __do_softirq+0x265/0x980 kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092 do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336 do_softirq kernel/softirq.c:328 [inline] __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189 spin_unlock_bh include/linux/spinlock.h:374 [inline] cfg80211_bss_update+0x904/0x2590 net/wireless/scan.c:1051 cfg80211_inform_bss_frame_data+0x69c/0xeb0 net/wireless/scan.c:1283 ieee80211_bss_info_update+0x42d/0x1800 net/mac80211/scan.c:105 ieee80211_rx_bss_info net/mac80211/ibss.c:1125 [inline] ieee80211_rx_mgmt_probe_beacon+0xb4f/0x15c0 net/mac80211/ibss.c:1607 ieee80211_ibss_rx_queued_mgmt+0xe27/0x18b0 net/mac80211/ibss.c:1634 ieee80211_iface_work+0x5c4/0x8a0 net/mac80211/iface.c:1341 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 ---------------- Code disassembly (best guess), 7 bytes skipped: 0: df 80 3c 02 00 0f filds 0xf00023c(%rax) 6: 85 9c 00 00 00 48 03 test %ebx,0x3480000(%rax,%rax,1) d: b3 30 mov $0x30,%bl f: 01 00 add %eax,(%rax) 11: 00 48 8d add %cl,-0x73(%rax) 14: 7b 50 jnp 0x66 16: 31 c9 xor %ecx,%ecx 18: 31 d2 xor %edx,%edx 1a: e8 6e 4a 1e fa callq 0xfa1e4a8d 1f: 48 83 c4 08 add $0x8,%rsp * 23: 5b pop %rbx <-- trapping instruction 24: 5d pop %rbp 25: 41 5c pop %r12 27: e9 d1 b2 2c fa jmpq 0xfa2cb2fd 2c: e8 cc b2 2c fa callq 0xfa2cb2fd 31: e8 67 bf 1e fa callq 0xfa1ebf9d 36: 4c 89 e2 mov %r12,%rdx