Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci0: command 0x0406 tx timeout Bluetooth: hci1: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout INFO: task syz-executor.3:8134 blocked for more than 140 seconds. Not tainted 4.19.177-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D24192 8134 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 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 xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 xt_request_find_table_lock+0x27/0xd0 net/netfilter/x_tables.c:1258 get_info+0x12f/0x4e0 net/ipv6/netfilter/ip6_tables.c:984 do_ipt_get_ctl+0x14e/0x8d0 net/ipv4/netfilter/ip_tables.c:1699 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:122 ip_getsockopt net/ipv4/ip_sockglue.c:1574 [inline] ip_getsockopt+0x167/0x1c0 net/ipv4/ip_sockglue.c:1554 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:3618 __sys_getsockopt+0x135/0x210 net/socket.c:1938 __do_sys_getsockopt net/socket.c:1949 [inline] __se_sys_getsockopt net/socket.c:1946 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:1946 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x46750a Code: 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 76 29 48 83 ec 10 48 89 6c 24 08 48 8d 6c 24 08 0f 1f 00 e8 7b 50 00 00 48 8b 04 24 48 <89> 44 24 18 48 8b 6c 24 08 48 83 c4 10 c3 e8 c3 1b 00 00 eb c1 cc RSP: 002b:00007ffd520ceb28 EFLAGS: 00000202 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000046750a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007ffd520ceb5c R09: 00007ffd520ceb80 R10: 0000000000543d08 R11: 0000000000000202 R12: 00007ffd520ceb5c R13: 00000000004bff8d R14: 0000000000543d08 R15: 0000000000543d00 INFO: task syz-executor.5:8135 blocked for more than 140 seconds. Not tainted 4.19.177-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D23296 8135 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 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 xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 xt_request_find_table_lock+0x27/0xd0 net/netfilter/x_tables.c:1258 get_info+0x12f/0x4e0 net/ipv6/netfilter/ip6_tables.c:984 do_ipt_get_ctl+0x14e/0x8d0 net/ipv4/netfilter/ip_tables.c:1699 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:122 ip_getsockopt net/ipv4/ip_sockglue.c:1574 [inline] ip_getsockopt+0x167/0x1c0 net/ipv4/ip_sockglue.c:1554 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:3618 __sys_getsockopt+0x135/0x210 net/socket.c:1938 __do_sys_getsockopt net/socket.c:1949 [inline] __se_sys_getsockopt net/socket.c:1946 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:1946 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x46750a Code: 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 76 29 48 83 ec 10 48 89 6c 24 08 48 8d 6c 24 08 0f 1f 00 e8 7b 50 00 00 48 8b 04 24 48 <89> 44 24 18 48 8b 6c 24 08 48 83 c4 10 c3 e8 c3 1b 00 00 eb c1 cc RSP: 002b:00007fff6c2bd788 EFLAGS: 00000202 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000046750a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fff6c2bd7b0 R08: 00007fff6c2bd7ac R09: 00007fff6c2bd840 R10: 00007fff6c2bd7b0 R11: 0000000000000202 R12: 0000000000000032 R13: 0000000000000003 R14: 00007fff6c2bd7ac R15: 0000000000543d00 INFO: task syz-executor.2:8136 blocked for more than 140 seconds. Not tainted 4.19.177-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D24368 8136 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 xt_register_table+0x27a/0x5d0 net/netfilter/x_tables.c:1437 ipt_register_table+0x197/0x2f0 net/ipv4/netfilter/ip_tables.c:1779 iptable_filter_table_init.part.0+0x9a/0xd0 net/ipv4/netfilter/iptable_filter.c:65 iptable_filter_table_init+0x4f/0x70 net/ipv4/netfilter/iptable_filter.c:69 xt_find_table_lock+0x289/0x430 net/netfilter/x_tables.c:1228 xt_request_find_table_lock+0x27/0xd0 net/netfilter/x_tables.c:1258 get_info+0x12f/0x4e0 net/ipv6/netfilter/ip6_tables.c:984 do_ipt_get_ctl+0x14e/0x8d0 net/ipv4/netfilter/ip_tables.c:1699 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:122 ip_getsockopt net/ipv4/ip_sockglue.c:1574 [inline] ip_getsockopt+0x167/0x1c0 net/ipv4/ip_sockglue.c:1554 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:3618 __sys_getsockopt+0x135/0x210 net/socket.c:1938 __do_sys_getsockopt net/socket.c:1949 [inline] __se_sys_getsockopt net/socket.c:1946 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:1946 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x46750a Code: 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 76 29 48 83 ec 10 48 89 6c 24 08 48 8d 6c 24 08 0f 1f 00 e8 7b 50 00 00 48 8b 04 24 48 <89> 44 24 18 48 8b 6c 24 08 48 83 c4 10 c3 e8 c3 1b 00 00 eb c1 cc RSP: 002b:00007ffc412d1728 EFLAGS: 00000202 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000046750a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007ffc412d175c R09: 00007ffc412d1780 R10: 0000000000543d08 R11: 0000000000000202 R12: 00007ffc412d175c R13: 00000000004bff8d R14: 0000000000543d08 R15: 0000000000543d00 INFO: task syz-executor.1:8140 blocked for more than 140 seconds. Not tainted 4.19.177-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D24192 8140 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 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 xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 xt_request_find_table_lock+0x27/0xd0 net/netfilter/x_tables.c:1258 get_info+0x12f/0x4e0 net/ipv6/netfilter/ip6_tables.c:984 do_ipt_get_ctl+0x14e/0x8d0 net/ipv4/netfilter/ip_tables.c:1699 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:122 ip_getsockopt net/ipv4/ip_sockglue.c:1574 [inline] ip_getsockopt+0x167/0x1c0 net/ipv4/ip_sockglue.c:1554 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:3618 __sys_getsockopt+0x135/0x210 net/socket.c:1938 __do_sys_getsockopt net/socket.c:1949 [inline] __se_sys_getsockopt net/socket.c:1946 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:1946 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x46750a Code: 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 76 29 48 83 ec 10 48 89 6c 24 08 48 8d 6c 24 08 0f 1f 00 e8 7b 50 00 00 48 8b 04 24 48 <89> 44 24 18 48 8b 6c 24 08 48 83 c4 10 c3 e8 c3 1b 00 00 eb c1 cc RSP: 002b:00007ffc689e1828 EFLAGS: 00000202 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000046750a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ffc689e1850 R08: 00007ffc689e184c R09: 00007ffc689e18e0 R10: 00007ffc689e1850 R11: 0000000000000202 R12: 0000000000000032 R13: 0000000000000003 R14: 00007ffc689e184c R15: 0000000000543d00 INFO: task syz-executor.4:8141 blocked for more than 140 seconds. Not tainted 4.19.177-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D23992 8141 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 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 xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 xt_request_find_table_lock+0x27/0xd0 net/netfilter/x_tables.c:1258 get_info+0x12f/0x4e0 net/ipv6/netfilter/ip6_tables.c:984 do_ipt_get_ctl+0x14e/0x8d0 net/ipv4/netfilter/ip_tables.c:1699 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:122 ip_getsockopt net/ipv4/ip_sockglue.c:1574 [inline] ip_getsockopt+0x167/0x1c0 net/ipv4/ip_sockglue.c:1554 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:3618 __sys_getsockopt+0x135/0x210 net/socket.c:1938 __do_sys_getsockopt net/socket.c:1949 [inline] __se_sys_getsockopt net/socket.c:1946 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:1946 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x46750a Code: 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 76 29 48 83 ec 10 48 89 6c 24 08 48 8d 6c 24 08 0f 1f 00 e8 7b 50 00 00 48 8b 04 24 48 <89> 44 24 18 48 8b 6c 24 08 48 83 c4 10 c3 e8 c3 1b 00 00 eb c1 cc RSP: 002b:00007ffe9fec6198 EFLAGS: 00000202 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000046750a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ffe9fec61c0 R08: 00007ffe9fec61bc R09: 00007ffe9fec6250 R10: 00007ffe9fec61c0 R11: 0000000000000202 R12: 0000000000000003 R13: 0000000000000003 R14: 00007ffe9fec61bc R15: 0000000000543d00 INFO: task syz-executor.0:8142 blocked for more than 140 seconds. Not tainted 4.19.177-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D24192 8142 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 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 xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 xt_request_find_table_lock+0x27/0xd0 net/netfilter/x_tables.c:1258 get_info+0x12f/0x4e0 net/ipv6/netfilter/ip6_tables.c:984 do_ipt_get_ctl+0x14e/0x8d0 net/ipv4/netfilter/ip_tables.c:1699 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x72/0xd0 net/netfilter/nf_sockopt.c:122 ip_getsockopt net/ipv4/ip_sockglue.c:1574 [inline] ip_getsockopt+0x167/0x1c0 net/ipv4/ip_sockglue.c:1554 tcp_getsockopt+0x86/0xd0 net/ipv4/tcp.c:3618 __sys_getsockopt+0x135/0x210 net/socket.c:1938 __do_sys_getsockopt net/socket.c:1949 [inline] __se_sys_getsockopt net/socket.c:1946 [inline] __x64_sys_getsockopt+0xba/0x150 net/socket.c:1946 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x46750a Code: 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 76 29 48 83 ec 10 48 89 6c 24 08 48 8d 6c 24 08 0f 1f 00 e8 7b 50 00 00 48 8b 04 24 48 <89> 44 24 18 48 8b 6c 24 08 48 83 c4 10 c3 e8 c3 1b 00 00 eb c1 cc RSP: 002b:00007ffd25ba4178 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000046750a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007ffd25ba41ac R09: 0000000000000278 R10: 00000000005443c8 R11: 0000000000000246 R12: 00007ffd25ba41ac R13: 00000000004c8ae8 R14: 00000000005443c8 R15: 00000000005443c0 Showing all locks held in the system: 1 lock held by khungtaskd/1567: #0: 000000000df54709 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 1 lock held by in:imklog/7792: #0: 00000000b92dd719 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 1 lock held by syz-executor.3/8134: #0: 000000000edab946 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 1 lock held by syz-executor.5/8135: #0: 000000000edab946 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 1 lock held by syz-executor.2/8136: #0: 000000000edab946 (&xt[i].mutex){+.+.}, at: xt_register_table+0xda/0x5d0 net/netfilter/x_tables.c:1425 1 lock held by syz-executor.1/8140: #0: 000000000edab946 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 1 lock held by syz-executor.4/8141: #0: 000000000edab946 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 1 lock held by syz-executor.0/8142: #0: 000000000edab946 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 2 locks held by kworker/u4:7/9469: #0: 00000000d40d2773 (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:9701 [inline] #0: 00000000d40d2773 (&rq->lock){-.-.}, at: pick_next_task_fair+0x556/0x1570 kernel/sched/fair.c:6840 #1: 000000000df54709 (rcu_read_lock){....}, at: cpu_of kernel/sched/sched.h:921 [inline] #1: 000000000df54709 (rcu_read_lock){....}, at: __update_idle_core+0x39/0x3e0 kernel/sched/fair.c:6057 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1567 Comm: khungtaskd Not tainted 4.19.177-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/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 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: 4677 Comm: systemd-journal Not tainted 4.19.177-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:___bpf_prog_run+0x33bf/0x50b0 kernel/bpf/core.c:1233 Code: e0 0f 4c 8d 7c c5 00 4c 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 7b 10 00 00 49 8d 7e 04 49 8b 17 48 89 f8 48 c1 e8 03 0f b6 0c 18 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 42 10 00 00 4d RSP: 0018:ffff8880a1b0fa30 EFLAGS: 00000a03 RAX: 1ffff9200033a615 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000027 RSI: ffffffff816c41ae RDI: ffffc900019d30ac RBP: ffff8880a1b0fb00 R08: 0000000000000000 R09: 0000000000000027 R10: 0000000000000006 R11: 0000000000000000 R12: ffffffff886fb0c0 R13: ffffed1014361f62 R14: ffffc900019d30a8 R15: ffff8880a1b0fb00 FS: 00007f9467d358c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9465177028 CR3: 00000000a1a37000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: