INFO: task syz-executor.0:23882 can't die for more than 143 seconds. task:syz-executor.0 state:D stack:27424 pid:23882 ppid: 6597 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 rfcomm_dlc_open+0x8f/0xa80 net/bluetooth/rfcomm/core.c:425 rfcomm_sock_connect+0x32f/0x460 net/bluetooth/rfcomm/sock.c:413 __sys_connect_file+0x155/0x1a0 net/socket.c:1890 __sys_connect+0x161/0x190 net/socket.c:1907 __do_sys_connect net/socket.c:1917 [inline] __se_sys_connect net/socket.c:1914 [inline] __x64_sys_connect+0x6f/0xb0 net/socket.c:1914 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: 0033:0x4665e9 RSP: 002b:00007f38ac0a8188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffd8afbfbcf R14: 00007f38ac0a8300 R15: 0000000000022000 INFO: task syz-executor.0:23882 blocked for more than 143 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:27424 pid:23882 ppid: 6597 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6104 __mutex_lock_common kernel/locking/mutex.c:1036 [inline] __mutex_lock+0xa46/0x1300 kernel/locking/mutex.c:1096 rfcomm_dlc_open+0x8f/0xa80 net/bluetooth/rfcomm/core.c:425 rfcomm_sock_connect+0x32f/0x460 net/bluetooth/rfcomm/sock.c:413 __sys_connect_file+0x155/0x1a0 net/socket.c:1890 __sys_connect+0x161/0x190 net/socket.c:1907 __do_sys_connect net/socket.c:1917 [inline] __se_sys_connect net/socket.c:1914 [inline] __x64_sys_connect+0x6f/0xb0 net/socket.c:1914 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: 0033:0x4665e9 RSP: 002b:00007f38ac0a8188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffd8afbfbcf R14: 00007f38ac0a8300 R15: 0000000000022000 INFO: task syz-executor.0:23887 can't die for more than 143 seconds. task:syz-executor.0 state:D stack:28808 pid:23887 ppid: 6597 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 __lock_sock+0x13d/0x260 net/core/sock.c:2645 lock_sock_nested+0xf6/0x120 net/core/sock.c:3178 lock_sock include/net/sock.h:1612 [inline] bt_sock_wait_state+0x249/0x590 net/bluetooth/af_bluetooth.c:557 rfcomm_sock_connect+0x3a5/0x460 net/bluetooth/rfcomm/sock.c:416 __sys_connect_file+0x155/0x1a0 net/socket.c:1890 __sys_connect+0x161/0x190 net/socket.c:1907 __do_sys_connect net/socket.c:1917 [inline] __se_sys_connect net/socket.c:1914 [inline] __x64_sys_connect+0x6f/0xb0 net/socket.c:1914 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: 0033:0x4665e9 RSP: 002b:00007f38ac087188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9 RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffd8afbfbcf R14: 00007f38ac087300 R15: 0000000000022000 INFO: task syz-executor.0:23887 blocked for more than 144 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:28808 pid:23887 ppid: 6597 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 __lock_sock+0x13d/0x260 net/core/sock.c:2645 lock_sock_nested+0xf6/0x120 net/core/sock.c:3178 lock_sock include/net/sock.h:1612 [inline] bt_sock_wait_state+0x249/0x590 net/bluetooth/af_bluetooth.c:557 rfcomm_sock_connect+0x3a5/0x460 net/bluetooth/rfcomm/sock.c:416 __sys_connect_file+0x155/0x1a0 net/socket.c:1890 __sys_connect+0x161/0x190 net/socket.c:1907 __do_sys_connect net/socket.c:1917 [inline] __se_sys_connect net/socket.c:1914 [inline] __x64_sys_connect+0x6f/0xb0 net/socket.c:1914 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: 0033:0x4665e9 RSP: 002b:00007f38ac087188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665e9 RDX: 0000000000000080 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffd8afbfbcf R14: 00007f38ac087300 R15: 0000000000022000 INFO: task syz-executor.0:23891 can't die for more than 144 seconds. task:syz-executor.0 state:D stack:30272 pid:23891 ppid: 6597 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 __lock_sock+0x13d/0x260 net/core/sock.c:2645 lock_sock_nested+0xf6/0x120 net/core/sock.c:3178 lock_sock include/net/sock.h:1612 [inline] rfcomm_sk_state_change+0xb4/0x390 net/bluetooth/rfcomm/sock.c:73 __rfcomm_dlc_close+0x1b6/0x8a0 net/bluetooth/rfcomm/core.c:489 rfcomm_dlc_close+0x1ea/0x240 net/bluetooth/rfcomm/core.c:520 __rfcomm_sock_close+0xac/0x260 net/bluetooth/rfcomm/sock.c:220 rfcomm_sock_shutdown+0xe9/0x210 net/bluetooth/rfcomm/sock.c:931 __sys_shutdown_sock net/socket.c:2242 [inline] __sys_shutdown_sock net/socket.c:2236 [inline] __sys_shutdown+0xf1/0x1b0 net/socket.c:2254 __do_sys_shutdown net/socket.c:2262 [inline] __se_sys_shutdown net/socket.c:2260 [inline] __x64_sys_shutdown+0x50/0x70 net/socket.c:2260 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: 0033:0x4665e9 RSP: 002b:00007f38ac066188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030 RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0 R13: 00007ffd8afbfbcf R14: 00007f38ac066300 R15: 0000000000022000 INFO: task syz-executor.0:23891 blocked for more than 144 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:30272 pid:23891 ppid: 6597 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 __lock_sock+0x13d/0x260 net/core/sock.c:2645 lock_sock_nested+0xf6/0x120 net/core/sock.c:3178 lock_sock include/net/sock.h:1612 [inline] rfcomm_sk_state_change+0xb4/0x390 net/bluetooth/rfcomm/sock.c:73 __rfcomm_dlc_close+0x1b6/0x8a0 net/bluetooth/rfcomm/core.c:489 rfcomm_dlc_close+0x1ea/0x240 net/bluetooth/rfcomm/core.c:520 __rfcomm_sock_close+0xac/0x260 net/bluetooth/rfcomm/sock.c:220 rfcomm_sock_shutdown+0xe9/0x210 net/bluetooth/rfcomm/sock.c:931 __sys_shutdown_sock net/socket.c:2242 [inline] __sys_shutdown_sock net/socket.c:2236 [inline] __sys_shutdown+0xf1/0x1b0 net/socket.c:2254 __do_sys_shutdown net/socket.c:2262 [inline] __se_sys_shutdown net/socket.c:2260 [inline] __x64_sys_shutdown+0x50/0x70 net/socket.c:2260 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: 0033:0x4665e9 RSP: 002b:00007f38ac066188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030 RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0 R13: 00007ffd8afbfbcf R14: 00007f38ac066300 R15: 0000000000022000 INFO: task syz-executor.0:23939 can't die for more than 144 seconds. task:syz-executor.0 state:D stack:29168 pid:23939 ppid: 6597 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 __lock_sock+0x13d/0x260 net/core/sock.c:2645 lock_sock_nested+0xf6/0x120 net/core/sock.c:3178 lock_sock include/net/sock.h:1612 [inline] rfcomm_sock_shutdown+0x54/0x210 net/bluetooth/rfcomm/sock.c:928 __sys_shutdown_sock net/socket.c:2242 [inline] __sys_shutdown_sock net/socket.c:2236 [inline] __sys_shutdown+0xf1/0x1b0 net/socket.c:2254 __do_sys_shutdown net/socket.c:2262 [inline] __se_sys_shutdown net/socket.c:2260 [inline] __x64_sys_shutdown+0x50/0x70 net/socket.c:2260 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: 0033:0x4665e9 RSP: 002b:00007f38ac024188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030 RAX: ffffffffffffffda RBX: 000000000056c260 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c260 R13: 00007ffd8afbfbcf R14: 00007f38ac024300 R15: 0000000000022000 INFO: task syz-executor.0:23939 blocked for more than 144 seconds. Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:29168 pid:23939 ppid: 6597 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4711 [inline] __schedule+0x93a/0x26f0 kernel/sched/core.c:5966 schedule+0xd3/0x270 kernel/sched/core.c:6045 __lock_sock+0x13d/0x260 net/core/sock.c:2645 lock_sock_nested+0xf6/0x120 net/core/sock.c:3178 lock_sock include/net/sock.h:1612 [inline] rfcomm_sock_shutdown+0x54/0x210 net/bluetooth/rfcomm/sock.c:928 __sys_shutdown_sock net/socket.c:2242 [inline] __sys_shutdown_sock net/socket.c:2236 [inline] __sys_shutdown+0xf1/0x1b0 net/socket.c:2254 __do_sys_shutdown net/socket.c:2262 [inline] __se_sys_shutdown net/socket.c:2260 [inline] __x64_sys_shutdown+0x50/0x70 net/socket.c:2260 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: 0033:0x4665e9 RSP: 002b:00007f38ac024188 EFLAGS: 00000246 ORIG_RAX: 0000000000000030 RAX: ffffffffffffffda RBX: 000000000056c260 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c260 R13: 00007ffd8afbfbcf R14: 00007f38ac024300 R15: 0000000000022000 INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.14.0-rc5-next-20210813-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:105 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline] watchdog+0xcb7/0xed0 kernel/hung_task.c:339 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6875 Comm: kworker/u4:3 Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:rcu_read_unlock_sched_notrace include/linux/rcupdate.h:809 [inline] RIP: 0010:trace_lock_release include/trace/events/lock.h:58 [inline] RIP: 0010:lock_release+0x52d/0x720 kernel/locking/lockdep.c:5636 Code: c0 0f 85 a5 fe ff ff e9 ec 91 92 07 65 ff 05 da d0 a6 7e 48 8b 05 d3 ac fe 0b e8 9e e8 05 00 85 c0 74 17 65 ff 0d c3 d0 a6 7e <0f> 85 7c fb ff ff e8 e7 26 a5 ff e9 72 fb ff ff e8 2e a6 d4 07 85 RSP: 0018:ffffc9000314fbd0 EFLAGS: 00000286 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff815b1ab1 RDX: fffffbfff1adbe4b RSI: 0000000000000008 RDI: ffffffff8d6df250 RBP: 1ffff92000629f7c R08: 0000000000000000 R09: ffffffff8d6df257 R10: fffffbfff1adbe4a R11: 0000000000000000 R12: ffffffff8b97eb80 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000208 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fed8d193028 CR3: 000000001a680000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_release include/linux/rcupdate.h:272 [inline] rcu_read_unlock include/linux/rcupdate.h:720 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline] batadv_nc_worker+0x771/0xe50 net/batman-adv/network-coding.c:715 process_one_work+0x98d/0x1630 kernel/workqueue.c:2275 worker_thread+0x658/0x11f0 kernel/workqueue.c:2421 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 0f 85 a5 fe ff ff jne 0xfffffeab 6: e9 ec 91 92 07 jmpq 0x79291f7 b: 65 ff 05 da d0 a6 7e incl %gs:0x7ea6d0da(%rip) # 0x7ea6d0ec 12: 48 8b 05 d3 ac fe 0b mov 0xbfeacd3(%rip),%rax # 0xbfeacec 19: e8 9e e8 05 00 callq 0x5e8bc 1e: 85 c0 test %eax,%eax 20: 74 17 je 0x39 22: 65 ff 0d c3 d0 a6 7e decl %gs:0x7ea6d0c3(%rip) # 0x7ea6d0ec 29: 0f 85 7c fb ff ff jne 0xfffffbab <-- trapping instruction 2f: e8 e7 26 a5 ff callq 0xffa5271b 34: e9 72 fb ff ff jmpq 0xfffffbab 39: e8 2e a6 d4 07 callq 0x7d4a66c 3e: 85 .byte 0x85