INFO: task klogd:2992 blocked for more than 143 seconds. Not tainted 6.1.78-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:klogd state:D stack:23176 pid:2992 ppid:1 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 wait_for_unix_gc+0x14c/0x210 net/unix/garbage.c:201 unix_dgram_sendmsg+0x113/0x2050 net/unix/af_unix.c:1899 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] __sys_sendto+0x480/0x600 net/socket.c:2148 __do_sys_sendto net/socket.c:2160 [inline] __se_sys_sendto net/socket.c:2156 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2156 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7504d649b5 RSP: 002b:00007ffc7a963108 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f7504d649b5 RDX: 000000000000007f RSI: 000056140ee580f0 RDI: 0000000000000003 RBP: 000056140ee4f910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013 R13: 00007f7504ef2212 R14: 00007ffc7a963208 R15: 0000000000000000 INFO: task udevd:28302 blocked for more than 144 seconds. Not tainted 6.1.78-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:24520 pid:28302 ppid:3003 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 wait_for_unix_gc+0x14c/0x210 net/unix/garbage.c:201 unix_dgram_sendmsg+0x113/0x2050 net/unix/af_unix.c:1899 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] sock_write_iter+0x394/0x4e0 net/socket.c:1143 call_write_iter include/linux/fs.h:2249 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2ed1f16bf2 RSP: 002b:00007ffd79006358 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2ed1f16bf2 RDX: 0000000000000000 RSI: 00007ffd790063af RDI: 000000000000000a RBP: 00007ffd790063af R08: 0000000000000001 R09: 0000000000000000 R10: 000000000000010f R11: 0000000000000246 R12: 000000000000000a R13: 00007f2ed22beae0 R14: 0000000000000000 R15: 000055e7ab408910 INFO: task udevd:28308 blocked for more than 144 seconds. Not tainted 6.1.78-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:24504 pid:28308 ppid:3003 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 wait_for_unix_gc+0x14c/0x210 net/unix/garbage.c:201 unix_dgram_sendmsg+0x113/0x2050 net/unix/af_unix.c:1899 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] sock_write_iter+0x394/0x4e0 net/socket.c:1143 call_write_iter include/linux/fs.h:2249 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2ed1f16bf2 RSP: 002b:00007ffd79006358 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2ed1f16bf2 RDX: 0000000000000000 RSI: 00007ffd790063af RDI: 000000000000000a RBP: 00007ffd790063af R08: 0000000000000001 R09: 0000000000000000 R10: 000000000000010f R11: 0000000000000246 R12: 000000000000000a R13: 00007f2ed22beae0 R14: 0000000000000000 R15: 000055e7ab408910 INFO: task udevd:28346 blocked for more than 145 seconds. Not tainted 6.1.78-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:26168 pid:28346 ppid:3003 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 wait_for_unix_gc+0x14c/0x210 net/unix/garbage.c:201 unix_dgram_sendmsg+0x113/0x2050 net/unix/af_unix.c:1899 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] sock_write_iter+0x394/0x4e0 net/socket.c:1143 call_write_iter include/linux/fs.h:2249 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2ed1f16bf2 RSP: 002b:00007ffd79006358 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2ed1f16bf2 RDX: 0000000000000000 RSI: 00007ffd790063af RDI: 000000000000000a RBP: 00007ffd790063af R08: 0000000000000001 R09: 1e6b94fdec9ff5c1 R10: 000000000000010f R11: 0000000000000246 R12: 000000000000000a R13: 00007f2ed22beae0 R14: 0000000000000000 R15: 000055e7ab408910 INFO: task udevd:28765 blocked for more than 145 seconds. Not tainted 6.1.78-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:26168 pid:28765 ppid:3003 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 wait_for_unix_gc+0x14c/0x210 net/unix/garbage.c:201 unix_dgram_sendmsg+0x113/0x2050 net/unix/af_unix.c:1899 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] sock_write_iter+0x394/0x4e0 net/socket.c:1143 call_write_iter include/linux/fs.h:2249 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2ed1f16bf2 RSP: 002b:00007ffd79006358 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2ed1f16bf2 RDX: 0000000000000000 RSI: 00007ffd790063af RDI: 000000000000000a RBP: 00007ffd790063af R08: 0000000000000001 R09: 1e6b94fdec9ff5c1 R10: 000000000000010f R11: 0000000000000246 R12: 000000000000000a R13: 00007f2ed22beae0 R14: 0000000000000000 R15: 000055e7ab408910 INFO: task udevd:652 blocked for more than 146 seconds. Not tainted 6.1.78-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:27136 pid:652 ppid:3003 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 wait_for_unix_gc+0x14c/0x210 net/unix/garbage.c:201 unix_dgram_sendmsg+0x113/0x2050 net/unix/af_unix.c:1899 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] sock_write_iter+0x394/0x4e0 net/socket.c:1143 call_write_iter include/linux/fs.h:2249 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2ed1f16bf2 RSP: 002b:00007ffd79006358 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2ed1f16bf2 RDX: 0000000000000000 RSI: 00007ffd790063af RDI: 000000000000000a RBP: 00007ffd790063af R08: 0000000000000001 R09: 1e6b94fdec9ff5c1 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000a R13: 00007f2ed22beae0 R14: 0000000000000000 R15: 000055e7ab408910 INFO: task syz-executor.2:661 blocked for more than 146 seconds. Not tainted 6.1.78-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28760 pid:661 ppid:3584 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 wait_for_unix_gc+0x14c/0x210 net/unix/garbage.c:201 unix_dgram_sendmsg+0x113/0x2050 net/unix/af_unix.c:1899 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmsg+0x2a9/0x390 net/socket.c:2597 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc6e2e7dda9 RSP: 002b:00007fc6e3b9e0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc6e2fac050 RCX: 00007fc6e2e7dda9 RDX: 0000000000000000 RSI: 0000000020001880 RDI: 0000000000000004 RBP: 00007fc6e2eca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fc6e2fac050 R15: 00007ffc53312ef8 INFO: task udevd:659 blocked for more than 147 seconds. Not tainted 6.1.78-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:26712 pid:659 ppid:3003 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 wait_for_unix_gc+0x14c/0x210 net/unix/garbage.c:201 unix_dgram_sendmsg+0x113/0x2050 net/unix/af_unix.c:1899 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] sock_write_iter+0x394/0x4e0 net/socket.c:1143 call_write_iter include/linux/fs.h:2249 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2ed1f16bf2 RSP: 002b:00007ffd79006358 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2ed1f16bf2 RDX: 0000000000000000 RSI: 00007ffd790063af RDI: 000000000000000a RBP: 00007ffd790063af R08: 0000000000000001 R09: 0000000000000000 R10: 000000000000010f R11: 0000000000000246 R12: 000000000000000a R13: 00007f2ed22beae0 R14: 0000000000000000 R15: 000055e7ab408910 INFO: task syz-executor.4:676 blocked for more than 147 seconds. Not tainted 6.1.78-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:27720 pid:676 ppid:8799 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 wait_for_unix_gc+0x14c/0x210 net/unix/garbage.c:201 unix_dgram_sendmsg+0x113/0x2050 net/unix/af_unix.c:1899 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmsg+0x2a9/0x390 net/socket.c:2597 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0c6087dda9 RSP: 002b:00007f0c616c50c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f0c609abf80 RCX: 00007f0c6087dda9 RDX: 0000000000000000 RSI: 0000000020004440 RDI: 0000000000000004 RBP: 00007f0c608ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0c609abf80 R15: 00007ffe30a0bc78 INFO: task udevd:691 blocked for more than 147 seconds. Not tainted 6.1.78-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:27208 pid:691 ppid:3003 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 wait_for_unix_gc+0x14c/0x210 net/unix/garbage.c:201 unix_dgram_sendmsg+0x113/0x2050 net/unix/af_unix.c:1899 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] sock_write_iter+0x394/0x4e0 net/socket.c:1143 call_write_iter include/linux/fs.h:2249 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2ed1f16bf2 RSP: 002b:00007ffd79006358 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2ed1f16bf2 RDX: 0000000000000000 RSI: 00007ffd790063af RDI: 000000000000000a RBP: 00007ffd790063af R08: 0000000000000001 R09: 1e6b94fdec9ff5c1 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000a R13: 00007f2ed22beae0 R14: 0000000000000000 R15: 000055e7ab408910 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8d12a910 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516 1 lock held by rcu_tasks_trace/13: #0: ffffffff8d12b110 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516 1 lock held by khungtaskd/28: #0: ffffffff8d12a740 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:318 [inline] #0: ffffffff8d12a740 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:759 [inline] #0: ffffffff8d12a740 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6494 2 locks held by getty/3299: #0: ffff888028d8b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2188 2 locks held by kworker/0:19/4907: #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267 #1: ffffc9000cb67d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267 2 locks held by kworker/u4:4/2511: 5 locks held by kworker/u4:0/23447: 1 lock held by syz-executor.0/649: 2 locks held by syz-executor.3/1104: #0: ffffffff8e294ba8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8e294ba8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7c1/0xff0 net/core/rtnetlink.c:6119 #1: ffffffff8d12fd38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline] #1: ffffffff8d12fd38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3b0/0x8a0 kernel/rcu/tree_exp.h:949 2 locks held by syz-executor.4/1112: #0: ffffffff8e288950 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x37b/0x5d0 net/core/net_namespace.c:474 #1: ffffffff8e294ba8 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:805 [inline] #1: ffffffff8e294ba8 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x174/0x3f0 net/smc/smc_pnet.c:874 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.78-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1b0/0x3f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xf88/0xfd0 kernel/hung_task.c:377 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2511 Comm: kworker/u4:4 Not tainted 6.1.78-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: bat_events batadv_nc_worker RIP: 0010:check_preemption_disabled+0x48/0x110 lib/smp_processor_id.c:55 Code: 77 75 65 8b 05 71 ee 77 75 a9 ff ff ff 7f 74 22 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 c7 00 00 00 89 d8 48 83 c4 10 <5b> 41 5c 41 5e 41 5f c3 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 RSP: 0018:ffffc900039afa98 EFLAGS: 00000082 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff816a7267 RDX: 0000000000000000 RSI: ffffffff8aebf9a0 RDI: ffffffff8b3d0e80 RBP: ffffc900039afbe8 R08: dffffc0000000000 R09: fffffbfff1ce687e R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000735f64 R13: 0000000000000246 R14: ffffc900039afb70 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa79bed5000 CR3: 000000000ce8e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lockdep_recursion_inc kernel/locking/lockdep.c:462 [inline] lock_release+0x19e/0xa20 kernel/locking/lockdep.c:5681 rcu_lock_release include/linux/rcupdate.h:323 [inline] rcu_read_unlock include/linux/rcupdate.h:792 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline] batadv_nc_worker+0x28c/0x610 net/batman-adv/network-coding.c:719 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306