INFO: task syz-executor.3:4164 blocked for more than 143 seconds. Not tainted 6.0.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27264 pid: 4164 ppid: 4125 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x916/0x27c0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 request_wait_answer+0x371/0x6b0 fs/fuse/dev.c:407 __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x53a/0xc00 fs/fuse/dev.c:511 fuse_access+0x1bc/0x320 fs/fuse/dir.c:1275 do_inode_permission fs/namei.c:458 [inline] inode_permission.part.0+0x2ca/0x470 fs/namei.c:525 path_permission include/linux/fs.h:2902 [inline] __do_sys_chdir fs/open.c:518 [inline] __se_sys_chdir fs/open.c:508 [inline] __x64_sys_chdir+0xf6/0x1f0 fs/open.c:508 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f49e14878d9 RSP: 002b:00007f49e2608188 EFLAGS: 00000246 ORIG_RAX: 0000000000000050 RAX: ffffffffffffffda RBX: 00007f49e158bf60 RCX: 00007f49e14878d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200020c0 RBP: 00007f49e14e1cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f49e1abfb2f R14: 00007f49e2608300 R15: 0000000000022000 INFO: task syz-executor.3:4169 blocked for more than 143 seconds. Not tainted 6.0.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27704 pid: 4169 ppid: 4125 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x916/0x27c0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 request_wait_answer+0x371/0x6b0 fs/fuse/dev.c:407 __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x53a/0xc00 fs/fuse/dev.c:511 fuse_access+0x1bc/0x320 fs/fuse/dir.c:1275 do_inode_permission fs/namei.c:458 [inline] inode_permission.part.0+0x2ca/0x470 fs/namei.c:525 path_permission include/linux/fs.h:2902 [inline] __do_sys_chdir fs/open.c:518 [inline] __se_sys_chdir fs/open.c:508 [inline] __x64_sys_chdir+0xf6/0x1f0 fs/open.c:508 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f49e14878d9 RSP: 002b:00007f49e2608188 EFLAGS: 00000246 ORIG_RAX: 0000000000000050 RAX: ffffffffffffffda RBX: 00007f49e158bf60 RCX: 00007f49e14878d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200020c0 RBP: 00007f49e14e1cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f49e1abfb2f R14: 00007f49e2608300 R15: 0000000000022000 INFO: task syz-executor.3:4174 blocked for more than 143 seconds. Not tainted 6.0.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27176 pid: 4174 ppid: 4125 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x916/0x27c0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 request_wait_answer+0x371/0x6b0 fs/fuse/dev.c:407 __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x53a/0xc00 fs/fuse/dev.c:511 fuse_access+0x1bc/0x320 fs/fuse/dir.c:1275 do_inode_permission fs/namei.c:458 [inline] inode_permission.part.0+0x2ca/0x470 fs/namei.c:525 path_permission include/linux/fs.h:2902 [inline] __do_sys_chdir fs/open.c:518 [inline] __se_sys_chdir fs/open.c:508 [inline] __x64_sys_chdir+0xf6/0x1f0 fs/open.c:508 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f49e14878d9 RSP: 002b:00007f49e2608188 EFLAGS: 00000246 ORIG_RAX: 0000000000000050 RAX: ffffffffffffffda RBX: 00007f49e158bf60 RCX: 00007f49e14878d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200020c0 RBP: 00007f49e14e1cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f49e1abfb2f R14: 00007f49e2608300 R15: 0000000000022000 INFO: task syz-executor.3:4179 blocked for more than 144 seconds. Not tainted 6.0.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27360 pid: 4179 ppid: 4125 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x916/0x27c0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 request_wait_answer+0x371/0x6b0 fs/fuse/dev.c:407 __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x53a/0xc00 fs/fuse/dev.c:511 fuse_access+0x1bc/0x320 fs/fuse/dir.c:1275 do_inode_permission fs/namei.c:458 [inline] inode_permission.part.0+0x2ca/0x470 fs/namei.c:525 path_permission include/linux/fs.h:2902 [inline] __do_sys_chdir fs/open.c:518 [inline] __se_sys_chdir fs/open.c:508 [inline] __x64_sys_chdir+0xf6/0x1f0 fs/open.c:508 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f49e14878d9 RSP: 002b:00007f49e2608188 EFLAGS: 00000246 ORIG_RAX: 0000000000000050 RAX: ffffffffffffffda RBX: 00007f49e158bf60 RCX: 00007f49e14878d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200020c0 RBP: 00007f49e14e1cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f49e1abfb2f R14: 00007f49e2608300 R15: 0000000000022000 INFO: task syz-executor.3:4184 blocked for more than 144 seconds. Not tainted 6.0.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27376 pid: 4184 ppid: 4125 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x916/0x27c0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 request_wait_answer+0x371/0x6b0 fs/fuse/dev.c:407 __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x53a/0xc00 fs/fuse/dev.c:511 fuse_access+0x1bc/0x320 fs/fuse/dir.c:1275 do_inode_permission fs/namei.c:458 [inline] inode_permission.part.0+0x2ca/0x470 fs/namei.c:525 path_permission include/linux/fs.h:2902 [inline] __do_sys_chdir fs/open.c:518 [inline] __se_sys_chdir fs/open.c:508 [inline] __x64_sys_chdir+0xf6/0x1f0 fs/open.c:508 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f49e14878d9 RSP: 002b:00007f49e2608188 EFLAGS: 00000246 ORIG_RAX: 0000000000000050 RAX: ffffffffffffffda RBX: 00007f49e158bf60 RCX: 00007f49e14878d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200020c0 RBP: 00007f49e14e1cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f49e1abfb2f R14: 00007f49e2608300 R15: 0000000000022000 INFO: task syz-executor.3:4189 blocked for more than 144 seconds. Not tainted 6.0.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27800 pid: 4189 ppid: 4125 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x916/0x27c0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 request_wait_answer+0x371/0x6b0 fs/fuse/dev.c:407 __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x53a/0xc00 fs/fuse/dev.c:511 fuse_access+0x1bc/0x320 fs/fuse/dir.c:1275 do_inode_permission fs/namei.c:458 [inline] inode_permission.part.0+0x2ca/0x470 fs/namei.c:525 path_permission include/linux/fs.h:2902 [inline] __do_sys_chdir fs/open.c:518 [inline] __se_sys_chdir fs/open.c:508 [inline] __x64_sys_chdir+0xf6/0x1f0 fs/open.c:508 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f49e14878d9 RSP: 002b:00007f49e2608188 EFLAGS: 00000246 ORIG_RAX: 0000000000000050 RAX: ffffffffffffffda RBX: 00007f49e158bf60 RCX: 00007f49e14878d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200020c0 RBP: 00007f49e14e1cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f49e1abfb2f R14: 00007f49e2608300 R15: 0000000000022000 INFO: task syz-executor.3:4195 blocked for more than 144 seconds. Not tainted 6.0.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27840 pid: 4195 ppid: 4125 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x916/0x27c0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 request_wait_answer+0x371/0x6b0 fs/fuse/dev.c:407 __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x53a/0xc00 fs/fuse/dev.c:511 fuse_access+0x1bc/0x320 fs/fuse/dir.c:1275 do_inode_permission fs/namei.c:458 [inline] inode_permission.part.0+0x2ca/0x470 fs/namei.c:525 path_permission include/linux/fs.h:2902 [inline] __do_sys_chdir fs/open.c:518 [inline] __se_sys_chdir fs/open.c:508 [inline] __x64_sys_chdir+0xf6/0x1f0 fs/open.c:508 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f49e14878d9 RSP: 002b:00007f49e2608188 EFLAGS: 00000246 ORIG_RAX: 0000000000000050 RAX: ffffffffffffffda RBX: 00007f49e158bf60 RCX: 00007f49e14878d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200020c0 RBP: 00007f49e14e1cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f49e1abfb2f R14: 00007f49e2608300 R15: 0000000000022000 INFO: task syz-executor.3:4201 blocked for more than 145 seconds. Not tainted 6.0.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:27416 pid: 4201 ppid: 4125 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x916/0x27c0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 request_wait_answer+0x371/0x6b0 fs/fuse/dev.c:407 __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x53a/0xc00 fs/fuse/dev.c:511 fuse_access+0x1bc/0x320 fs/fuse/dir.c:1275 do_inode_permission fs/namei.c:458 [inline] inode_permission.part.0+0x2ca/0x470 fs/namei.c:525 path_permission include/linux/fs.h:2902 [inline] __do_sys_chdir fs/open.c:518 [inline] __se_sys_chdir fs/open.c:508 [inline] __x64_sys_chdir+0xf6/0x1f0 fs/open.c:508 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f49e14878d9 RSP: 002b:00007f49e2608188 EFLAGS: 00000246 ORIG_RAX: 0000000000000050 RAX: ffffffffffffffda RBX: 00007f49e158bf60 RCX: 00007f49e14878d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200020c0 RBP: 00007f49e14e1cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f49e1abfb2f R14: 00007f49e2608300 R15: 0000000000022000 INFO: task syz-executor.0:4207 blocked for more than 145 seconds. Not tainted 6.0.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27640 pid: 4207 ppid: 4130 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x916/0x27c0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 request_wait_answer+0x371/0x6b0 fs/fuse/dev.c:407 __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x53a/0xc00 fs/fuse/dev.c:511 fuse_access+0x1bc/0x320 fs/fuse/dir.c:1275 do_inode_permission fs/namei.c:458 [inline] inode_permission.part.0+0x2ca/0x470 fs/namei.c:525 path_permission include/linux/fs.h:2902 [inline] __do_sys_chdir fs/open.c:518 [inline] __se_sys_chdir fs/open.c:508 [inline] __x64_sys_chdir+0xf6/0x1f0 fs/open.c:508 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd0c1c878d9 RSP: 002b:00007fd0c2d8e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000050 RAX: ffffffffffffffda RBX: 00007fd0c1d8bf60 RCX: 00007fd0c1c878d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200020c0 RBP: 00007fd0c1ce1cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd0c22bfb2f R14: 00007fd0c2d8e300 R15: 0000000000022000 INFO: task syz-executor.5:4212 blocked for more than 145 seconds. Not tainted 6.0.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27640 pid: 4212 ppid: 4128 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5182 [inline] __schedule+0x916/0x27c0 kernel/sched/core.c:6494 schedule+0xda/0x1b0 kernel/sched/core.c:6570 request_wait_answer+0x371/0x6b0 fs/fuse/dev.c:407 __fuse_request_send fs/fuse/dev.c:426 [inline] fuse_simple_request+0x53a/0xc00 fs/fuse/dev.c:511 fuse_access+0x1bc/0x320 fs/fuse/dir.c:1275 do_inode_permission fs/namei.c:458 [inline] inode_permission.part.0+0x2ca/0x470 fs/namei.c:525 path_permission include/linux/fs.h:2902 [inline] __do_sys_chdir fs/open.c:518 [inline] __se_sys_chdir fs/open.c:508 [inline] __x64_sys_chdir+0xf6/0x1f0 fs/open.c:508 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1f8fa878d9 RSP: 002b:00007f1f90b5a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000050 RAX: ffffffffffffffda RBX: 00007f1f8fb8bf60 RCX: 00007f1f8fa878d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200020c0 RBP: 00007f1f8fae1cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1f900bfb2f R14: 00007f1f90b5a300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8b17ca30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8b17c730 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/28: #0: ffffffff8b17d580 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6492 2 locks held by getty/3315: #0: ffff888024ab2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x1f/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc900029232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xb6e/0x1030 drivers/tty/n_tty.c:2177 2 locks held by kworker/0:3/3660: #0: ffff888010066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc9000350fdb8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 5 locks held by kworker/u4:10/15355: 1 lock held by syz-executor134/24179: #0: ffffffff8b188238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline] #0: ffffffff8b188238 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x562/0x670 kernel/rcu/tree_exp.h:940 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.0.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x30/0xca lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x154/0x180 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0x88c/0xbf0 kernel/hung_task.c:369 kthread+0x294/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 24357 Comm: kworker/u4:15 Not tainted 6.0.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Workqueue: bat_events batadv_nc_worker RIP: 0010:__this_cpu_preempt_check+0x0/0x10 lib/smp_processor_id.c:65 Code: cc cd ff eb a4 0f 1f 44 00 00 48 c7 c6 a0 48 64 89 48 c7 c7 e0 48 64 89 e9 0d ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 <48> 89 fe 48 c7 c7 20 49 64 89 e9 f1 fe ff ff cc eb 1e 0f 1f 00 48 RSP: 0018:ffffc900047afbb8 EFLAGS: 00000046 RAX: 0000000000000002 RBX: 658fc1b110d12353 RCX: ffffc900047afc10 RDX: 1ffff1100f32a4e5 RSI: 0000000000000000 RDI: ffffffff890bd2c0 RBP: 1ffff920008f5f7a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000002 R13: 0000000000000003 R14: ffff888079952730 R15: ffff888079951d00 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555eb8728 CR3: 000000000ae8e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lockdep_recursion_finish kernel/locking/lockdep.c:466 [inline] lock_release+0x3bb/0x780 kernel/locking/lockdep.c:5688 rcu_lock_release include/linux/rcupdate.h:285 [inline] rcu_read_unlock include/linux/rcupdate.h:739 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline] batadv_nc_worker+0x668/0xd70 net/batman-adv/network-coding.c:719 process_one_work+0x865/0x13d0 kernel/workqueue.c:2289 worker_thread+0x598/0xec0 kernel/workqueue.c:2436 kthread+0x294/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306