Bluetooth: hci0: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci5: command 0x0406 tx timeout INFO: task syz-executor.0:8138 blocked for more than 140 seconds. Not tainted 4.19.164-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D23736 8138 1 0x00000004 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 xt_replace_table+0x2ff/0x640 net/netfilter/x_tables.c:1394 __do_replace+0x1d7/0x870 net/ipv6/netfilter/ip6_tables.c:1087 do_replace net/ipv6/netfilter/ip6_tables.c:1160 [inline] do_ip6t_set_ctl+0x2d2/0x430 net/ipv6/netfilter/ip6_tables.c:1684 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x6f/0xc0 net/netfilter/nf_sockopt.c:115 ipv6_setsockopt+0x103/0x160 net/ipv6/ipv6_sockglue.c:945 tcp_setsockopt+0x86/0xd0 net/ipv4/tcp.c:3097 __sys_setsockopt+0x14d/0x240 net/socket.c:1901 __do_sys_setsockopt net/socket.c:1912 [inline] __se_sys_setsockopt net/socket.c:1909 [inline] __x64_sys_setsockopt+0xba/0x150 net/socket.c:1909 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x460d4a Code: 48 8b 44 24 20 48 89 44 24 10 e8 11 32 fd ff 80 7c 24 18 00 75 16 c7 04 24 02 00 00 00 e8 4e 51 00 00 48 8b 6c 24 38 48 83 c4 <40> c3 e8 0f 99 fe ff eb e3 e8 38 18 00 00 e9 73 ff ff ff cc cc cc RSP: 002b:00007ffd5a79c288 EFLAGS: 00000206 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007ffd5a79c2b0 RCX: 0000000000460d4a RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 RBP: 000000000074cca0 R08: 00000000000003b8 R09: 0000000000004000 R10: 000000000074ab40 R11: 0000000000000206 R12: 00007ffd5a79c310 R13: 0000000000000003 R14: 000000000074aae0 R15: 0000000000000029 INFO: task syz-executor.1:8140 blocked for more than 140 seconds. Not tainted 4.19.164-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D23504 8140 1 0x80000002 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:1002 [inline] __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072 netdev_run_todo+0x719/0xab0 net/core/dev.c:8992 tun_detach drivers/net/tun.c:757 [inline] tun_chr_close+0xf5/0x180 drivers/net/tun.c:3275 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbed/0x2be0 kernel/exit.c:890 do_group_exit+0x125/0x310 kernel/exit.c:993 __do_sys_exit_group kernel/exit.c:1004 [inline] __se_sys_exit_group kernel/exit.c:1002 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:1002 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45e219 Code: 5c 24 08 4c 89 54 24 10 44 89 64 24 18 44 89 44 24 1c 4c 89 4c 24 20 48 8b 84 24 80 00 00 00 48 8d 94 24 80 00 00 00 ff d0 80 <7c> 24 28 00 75 22 48 8b 9c 24 a8 00 00 00 48 8b 73 28 48 8b 4b 30 RSP: 002b:00007ffe12e17568 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000016 RCX: 000000000045e219 RDX: 0000000000417ab1 RSI: 00000000016b9df0 RDI: 0000000000000000 RBP: 00000000004c2d13 R08: 000000000000000c R09: 0000000000000000 R10: 0000000002839940 R11: 0000000000000246 R12: 00007ffe12e18810 R13: 0000000002842aa0 R14: 0000000000000000 R15: 0000000000014d59 INFO: task kworker/0:3:8751 blocked for more than 140 seconds. Not tainted 4.19.164-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:3 D25696 8751 2 0x80000000 Workqueue: events linkwatch_event 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:1002 [inline] __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072 linkwatch_event+0xb/0x60 net/core/link_watch.c:236 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/u4:6:9493 blocked for more than 140 seconds. Not tainted 4.19.164-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:6 D27240 9493 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:1002 [inline] __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072 ip6gre_exit_batch_net+0x82/0x6c0 net/ipv6/ip6_gre.c:1634 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task syz-executor.5:9907 blocked for more than 140 seconds. Not tainted 4.19.164-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28312 9907 8148 0x00000004 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:1002 [inline] __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072 netlink_dump+0x4d/0xc10 net/netlink/af_netlink.c:2190 netlink_recvmsg+0xa56/0xea0 net/netlink/af_netlink.c:1992 sock_recvmsg_nosec net/socket.c:795 [inline] sock_recvmsg net/socket.c:802 [inline] sock_recvmsg+0xca/0x110 net/socket.c:798 ___sys_recvmsg+0x255/0x570 net/socket.c:2277 __sys_recvmsg net/socket.c:2326 [inline] __do_sys_recvmsg net/socket.c:2336 [inline] __se_sys_recvmsg net/socket.c:2333 [inline] __x64_sys_recvmsg+0x12f/0x220 net/socket.c:2333 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45e219 Code: Bad RIP value. RSP: 002b:00007f7a10344c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffd6b40121f R14: 00007f7a103459c0 R15: 000000000119bf8c INFO: task syz-executor.2:9925 blocked for more than 140 seconds. Not tainted 4.19.164-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28960 9925 8142 0x00000004 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:1002 [inline] __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072 __netlink_dump_start+0x103/0x6f0 net/netlink/af_netlink.c:2297 netlink_dump_start include/linux/netlink.h:213 [inline] rtnetlink_rcv_msg+0x71e/0xb80 net/core/rtnetlink.c:4741 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45e219 Code: Bad RIP value. RSP: 002b:00007f9b0990bc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000003 RBP: 000000000119c068 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034 R13: 00007ffe748b244f R14: 00007f9b0990c9c0 R15: 000000000119c034 INFO: task syz-executor.3:9921 blocked for more than 140 seconds. Not tainted 4.19.164-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D24832 9921 8144 0x00000004 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_net+0x37/0x50 net/core/dev.c:9266 dev_deactivate_many+0x45a/0xe60 net/sched/sch_generic.c:1216 dev_deactivate+0xf5/0x1c0 net/sched/sch_generic.c:1243 dev_qdisc_change_tx_queue_len+0x215/0x390 net/sched/sch_generic.c:1266 dev_change_tx_queue_len+0x190/0x1d0 net/core/dev.c:7858 do_setlink+0x91b/0x3540 net/core/rtnetlink.c:2471 rtnl_group_changelink net/core/rtnetlink.c:2925 [inline] rtnl_newlink+0xbc0/0x15b0 net/core/rtnetlink.c:3083 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4778 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45e219 Code: Bad RIP value. RSP: 002b:00007f7e1c72bc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffe0b8031ef R14: 00007f7e1c72c9c0 R15: 000000000119bf8c INFO: task syz-executor.4:9930 blocked for more than 140 seconds. Not tainted 4.19.164-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D27992 9930 8146 0x00000004 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:1002 [inline] __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072 rtnl_lock net/core/rtnetlink.c:77 [inline] rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4775 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45e219 Code: Bad RIP value. RSP: 002b:00007fb40f6a9c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffc7052903f R14: 00007fb40f6aa9c0 R15: 000000000119bf8c Showing all locks held in the system: 3 locks held by kworker/0:1/14: #0: 00000000c6961c1b ((wq_completion)"events_power_efficient"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 #1: 0000000094bcfa80 ((reg_check_chans).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 #2: 000000000c6c0346 (rtnl_mutex){+.+.}, at: reg_check_chans_work+0x8a/0xdf0 net/wireless/reg.c:2189 1 lock held by khungtaskd/1565: #0: 000000005a0d6fff (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 1 lock held by in:imklog/8005: 1 lock held by syz-executor.0/8138: #0: 00000000c747d3c5 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 1 lock held by syz-executor.1/8140: #0: 000000000c6c0346 (rtnl_mutex){+.+.}, at: netdev_run_todo+0x719/0xab0 net/core/dev.c:8992 3 locks held by kworker/0:3/8751: #0: 00000000165998b5 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 #1: 00000000ab4d3adf ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 #2: 000000000c6c0346 (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 3 locks held by kworker/1:4/9143: #0: 00000000d302240e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 #1: 000000000ddec24b ((addr_chk_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 #2: 000000000c6c0346 (rtnl_mutex){+.+.}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4475 4 locks held by kworker/u4:6/9493: #0: 00000000dd3a9905 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 #1: 00000000eaeb9aff (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 #2: 000000007eeb9ce4 (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:520 #3: 000000000c6c0346 (rtnl_mutex){+.+.}, at: ip6gre_exit_batch_net+0x82/0x6c0 net/ipv6/ip6_gre.c:1634 1 lock held by syz-executor.5/9907: #0: 000000000c6c0346 (rtnl_mutex){+.+.}, at: netlink_dump+0x4d/0xc10 net/netlink/af_netlink.c:2190 1 lock held by syz-executor.2/9925: #0: 000000000c6c0346 (rtnl_mutex){+.+.}, at: __netlink_dump_start+0x103/0x6f0 net/netlink/af_netlink.c:2297 1 lock held by syz-executor.3/9921: #0: 000000000c6c0346 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000000c6c0346 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4775 1 lock held by syz-executor.4/9930: #0: 000000000c6c0346 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000000c6c0346 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4775 1 lock held by syz-executor.1/9938: #0: 000000000c6c0346 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000000c6c0346 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4775 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1565 Comm: khungtaskd Not tainted 4.19.164-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/0x2fe lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb 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: 7 Comm: kworker/u4:0 Not tainted 4.19.164-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:arch_atomic_inc arch/x86/include/asm/atomic.h:97 [inline] RIP: 0010:atomic_inc include/asm-generic/atomic-instrumented.h:110 [inline] RIP: 0010:__lock_acquire+0x256/0x3ff0 kernel/locking/lockdep.c:3307 Code: 00 49 8b 44 c6 08 48 85 c0 0f 84 38 ff ff ff 48 8d b8 38 01 00 00 be 04 00 00 00 48 89 44 24 10 e8 3f a0 4e 00 48 8b 44 24 10 ff 80 38 01 00 00 49 8d b5 80 08 00 00 48 ba 00 00 00 00 00 fc RSP: 0018:ffff8880b5a57a68 EFLAGS: 00000046 RAX: ffffffff8cd5b050 RBX: 0000000000000000 RCX: ffffffff814c45c1 RDX: fffffbfff19ab632 RSI: 0000000000000004 RDI: ffffffff8cd5b188 RBP: 0000000000000002 R08: 0000000000000001 R09: fffffbfff19ab631 R10: ffffffff8cd5b18b R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880b5a481c0 R14: ffffffff89f85c60 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f69c13dd000 CR3: 00000000ab169000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3907 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock include/linux/rcupdate.h:627 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:419 [inline] batadv_nc_worker+0x12d/0xd50 net/batman-adv/network-coding.c:730 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415