INFO: task syz-executor.1:19921 blocked for more than 143 seconds. Not tainted 5.17.0-rc1-next-20220124-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:28112 pid:19921 ppid: 3627 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6295 schedule+0xd2/0x260 kernel/sched/core.c:6368 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032 __down_read_common kernel/locking/rwsem.c:1214 [inline] __down_read kernel/locking/rwsem.c:1223 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1463 mmap_read_lock include/linux/mmap_lock.h:117 [inline] exit_mm kernel/exit.c:483 [inline] do_exit+0x91f/0x2b10 kernel/exit.c:793 do_group_exit+0xd2/0x2f0 kernel/exit.c:935 __do_sys_exit_group kernel/exit.c:946 [inline] __se_sys_exit_group kernel/exit.c:944 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:944 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fcd4dcc1059 RSP: 002b:00007ffeef6c3468 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007fcd4dcc1059 RDX: 00007fcd4dc73c9b RSI: ffffffffffffffb8 RDI: 0000000000000000 RBP: 0000000000000000 R08: 00007ffeef775080 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffeef6c3550 INFO: task syz-executor.1:19922 blocked for more than 143 seconds. Not tainted 5.17.0-rc1-next-20220124-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:26936 pid:19922 ppid: 3627 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6295 schedule+0xd2/0x260 kernel/sched/core.c:6368 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032 __down_read_common kernel/locking/rwsem.c:1214 [inline] __down_read kernel/locking/rwsem.c:1223 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1463 mmap_read_lock include/linux/mmap_lock.h:117 [inline] exit_mm kernel/exit.c:483 [inline] do_exit+0x91f/0x2b10 kernel/exit.c:793 do_group_exit+0xd2/0x2f0 kernel/exit.c:935 get_signal+0x4b0/0x28c0 kernel/signal.c:2862 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fcd4dcc1059 RSP: 002b:00007fcd4c636218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fcd4ddd3f68 RCX: 00007fcd4dcc1059 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fcd4ddd3f68 RBP: 00007fcd4ddd3f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcd4ddd3f6c R13: 00007ffeef6c322f R14: 00007fcd4c636300 R15: 0000000000022000 INFO: task syz-executor.1:19929 blocked for more than 144 seconds. Not tainted 5.17.0-rc1-next-20220124-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29464 pid:19929 ppid: 3627 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6295 schedule+0xd2/0x260 kernel/sched/core.c:6368 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032 __down_read_common kernel/locking/rwsem.c:1214 [inline] __down_read kernel/locking/rwsem.c:1223 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1463 mmap_read_lock include/linux/mmap_lock.h:117 [inline] exit_mm kernel/exit.c:483 [inline] do_exit+0x91f/0x2b10 kernel/exit.c:793 do_group_exit+0xd2/0x2f0 kernel/exit.c:935 get_signal+0x4b0/0x28c0 kernel/signal.c:2862 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fcd4dcc1059 RSP: 002b:00007fcd4c615218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fcd4ddd4038 RCX: 00007fcd4dcc1059 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fcd4ddd4038 RBP: 00007fcd4ddd4030 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcd4ddd403c R13: 00007ffeef6c322f R14: 00007fcd4c615300 R15: 0000000000022000 INFO: task syz-executor.1:19930 can't die for more than 144 seconds. task:syz-executor.1 state:R running task stack:28512 pid:19930 ppid: 3627 flags:0x00004006 Call Trace: INFO: task syz-executor.1:19931 blocked for more than 144 seconds. Not tainted 5.17.0-rc1-next-20220124-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29048 pid:19931 ppid: 3627 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6295 schedule+0xd2/0x260 kernel/sched/core.c:6368 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032 __down_read_common kernel/locking/rwsem.c:1214 [inline] __down_read kernel/locking/rwsem.c:1223 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1463 mmap_read_lock include/linux/mmap_lock.h:117 [inline] exit_mm kernel/exit.c:483 [inline] do_exit+0x91f/0x2b10 kernel/exit.c:793 do_group_exit+0xd2/0x2f0 kernel/exit.c:935 get_signal+0x4b0/0x28c0 kernel/signal.c:2862 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fcd4dcc1059 RSP: 002b:00007fcd4c5d3218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fcd4ddd41d8 RCX: 00007fcd4dcc1059 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fcd4ddd41d8 RBP: 00007fcd4ddd41d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcd4ddd41dc R13: 00007ffeef6c322f R14: 00007fcd4c5d3300 R15: 0000000000022000 INFO: task syz-executor.1:19932 blocked for more than 145 seconds. Not tainted 5.17.0-rc1-next-20220124-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29448 pid:19932 ppid: 3627 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6295 schedule+0xd2/0x260 kernel/sched/core.c:6368 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032 __down_read_common kernel/locking/rwsem.c:1214 [inline] __down_read kernel/locking/rwsem.c:1223 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1463 mmap_read_lock include/linux/mmap_lock.h:117 [inline] exit_mm kernel/exit.c:483 [inline] do_exit+0x91f/0x2b10 kernel/exit.c:793 do_group_exit+0xd2/0x2f0 kernel/exit.c:935 get_signal+0x4b0/0x28c0 kernel/signal.c:2862 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fcd4dcc1059 RSP: 002b:00007fcd4c5b2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: fffffffffffffffc RBX: 00007fcd4ddd42a0 RCX: 00007fcd4dcc1059 RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020000000 RBP: 00007fcd4dd1b08d R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000080011 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeef6c322f R14: 00007fcd4c5b2300 R15: 0000000000022000 INFO: task syz-executor.1:19933 blocked for more than 145 seconds. Not tainted 5.17.0-rc1-next-20220124-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:29504 pid:19933 ppid: 3627 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6295 schedule+0xd2/0x260 kernel/sched/core.c:6368 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032 __down_read_common kernel/locking/rwsem.c:1214 [inline] __down_read kernel/locking/rwsem.c:1223 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1463 mmap_read_lock include/linux/mmap_lock.h:117 [inline] exit_mm kernel/exit.c:483 [inline] do_exit+0x91f/0x2b10 kernel/exit.c:793 do_group_exit+0xd2/0x2f0 kernel/exit.c:935 get_signal+0x4b0/0x28c0 kernel/signal.c:2862 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868 handle_signal_work kernel/entry/common.c:148 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fcd4dcc1059 RSP: 002b:00007fcd4c591218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fcd4ddd4378 RCX: 00007fcd4dcc1059 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fcd4ddd4378 RBP: 00007fcd4ddd4370 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcd4ddd437c R13: 00007ffeef6c322f R14: 00007fcd4c591300 R15: 0000000000022000 INFO: task syz-executor.1:19934 can't die for more than 146 seconds. task:syz-executor.1 state:D stack:30328 pid:19934 ppid: 3627 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6295 schedule+0xd2/0x260 kernel/sched/core.c:6368 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032 __down_read_common kernel/locking/rwsem.c:1214 [inline] __down_read kernel/locking/rwsem.c:1223 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1463 mmap_read_lock include/linux/mmap_lock.h:117 [inline] do_user_addr_fault+0x9d6/0x11c0 arch/x86/mm/fault.c:1348 handle_page_fault arch/x86/mm/fault.c:1484 [inline] exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1540 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568 RIP: 0033:0x7fcd4dc67f74 RSP: 002b:00007fcd4c570190 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fcd4dd1e684 RDX: 00000000000984fd RSI: 0000000020000100 RDI: 00007fcd4dd19fad RBP: 00007fcd4dd1b08d R08: 0000000000000333 R09: 00007ffeef775080 R10: 00007ffeef775090 R11: 0000000000026ef6 R12: 0000000000000000 R13: 00007ffeef6c322f R14: 00007fcd4c570300 R15: 0000000000022000 INFO: task syz-executor.1:19934 blocked for more than 146 seconds. Not tainted 5.17.0-rc1-next-20220124-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:30328 pid:19934 ppid: 3627 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6295 schedule+0xd2/0x260 kernel/sched/core.c:6368 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032 __down_read_common kernel/locking/rwsem.c:1214 [inline] __down_read kernel/locking/rwsem.c:1223 [inline] down_read+0xe2/0x440 kernel/locking/rwsem.c:1463 mmap_read_lock include/linux/mmap_lock.h:117 [inline] do_user_addr_fault+0x9d6/0x11c0 arch/x86/mm/fault.c:1348 handle_page_fault arch/x86/mm/fault.c:1484 [inline] exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1540 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568 RIP: 0033:0x7fcd4dc67f74 RSP: 002b:00007fcd4c570190 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fcd4dd1e684 RDX: 00000000000984fd RSI: 0000000020000100 RDI: 00007fcd4dd19fad RBP: 00007fcd4dd1b08d R08: 0000000000000333 R09: 00007ffeef775080 R10: 00007ffeef775090 R11: 0000000000026ef6 R12: 0000000000000000 R13: 00007ffeef6c322f R14: 00007fcd4c570300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8bb83ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460 2 locks held by kworker/u4:4/374: 2 locks held by getty/3279: #0: ffff888023c1f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002b632e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077 1 lock held by syz-executor.1/19921: #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2b10 kernel/exit.c:793 1 lock held by syz-executor.1/19922: #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2b10 kernel/exit.c:793 1 lock held by syz-executor.1/19929: #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2b10 kernel/exit.c:793 1 lock held by syz-executor.1/19930: 1 lock held by syz-executor.1/19931: #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2b10 kernel/exit.c:793 1 lock held by syz-executor.1/19932: #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2b10 kernel/exit.c:793 1 lock held by syz-executor.1/19933: #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0x91f/0x2b10 kernel/exit.c:793 1 lock held by syz-executor.1/19934: #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88801d0d2b28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_user_addr_fault+0x9d6/0x11c0 arch/x86/mm/fault.c:1348 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.17.0-rc1-next-20220124-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:256 [inline] watchdog+0xcb7/0xed0 kernel/hung_task.c:413 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 10 Comm: kworker/u4:1 Not tainted 5.17.0-rc1-next-20220124-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:check_preemption_disabled+0x43/0x170 lib/smp_processor_id.c:56 Code: a8 76 65 8b 1d 0e d1 a8 76 81 e3 ff ff ff 7f 31 ff 89 de 0f 1f 44 00 00 85 db 74 11 0f 1f 44 00 00 44 89 e0 5b 5d 41 5c 41 5d <41> 5e c3 0f 1f 44 00 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de 0f RSP: 0018:ffffc90000cf7af0 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8bb83a20 R08: 0000000000000000 R09: ffffffff8d94aa17 R10: fffffbfff1b29542 R11: 0000000000000000 R12: ffff888010e41d40 R13: 0000000000000000 R14: 00000000ffffffff R15: ffff888010e427f8 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00026d000 CR3: 000000001fcad000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lockdep_recursion_finish kernel/locking/lockdep.c:438 [inline] lock_is_held_type+0xd7/0x140 kernel/locking/lockdep.c:5683 lock_is_held include/linux/lockdep.h:283 [inline] rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125 trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0x522/0x720 kernel/locking/lockdep.c:5650 rcu_lock_release include/linux/rcupdate.h:273 [inline] rcu_read_unlock include/linux/rcupdate.h:727 [inline] batadv_nc_process_nc_paths.part.0+0x235/0x3c0 net/batman-adv/network-coding.c:699 batadv_nc_process_nc_paths net/batman-adv/network-coding.c:679 [inline] batadv_nc_worker+0xc46/0xfa0 net/batman-adv/network-coding.c:728 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: a8 76 test $0x76,%al 2: 65 8b 1d 0e d1 a8 76 mov %gs:0x76a8d10e(%rip),%ebx # 0x76a8d117 9: 81 e3 ff ff ff 7f and $0x7fffffff,%ebx f: 31 ff xor %edi,%edi 11: 89 de mov %ebx,%esi 13: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 18: 85 db test %ebx,%ebx 1a: 74 11 je 0x2d 1c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 21: 44 89 e0 mov %r12d,%eax 24: 5b pop %rbx 25: 5d pop %rbp 26: 41 5c pop %r12 28: 41 5d pop %r13 * 2a: 41 5e pop %r14 <-- trapping instruction 2c: c3 retq 2d: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 32: 9c pushfq 33: 5b pop %rbx 34: 81 e3 00 02 00 00 and $0x200,%ebx 3a: 31 ff xor %edi,%edi 3c: 48 89 de mov %rbx,%rsi 3f: 0f .byte 0xf