Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci1: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci5: command 0x0406 tx timeout INFO: task syz-executor.0:8140 blocked for more than 140 seconds. Not tainted 4.19.171-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D23544 8140 8139 0x00000000 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: 0033:0x460d2a Code: 8b 52 08 48 89 54 24 30 e8 93 30 fd ff 48 8b 44 24 30 48 89 04 24 48 8b 44 24 28 48 89 44 24 08 48 8b 44 24 20 48 89 44 24 10 11 32 fd ff 80 7c 24 18 00 75 16 c7 04 24 02 00 00 00 e8 4e 51 RSP: 002b:00007ffe7ef58888 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffe7ef588b0 RCX: 0000000000460d2a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000074ee60 R08: 00007ffe7ef588ac R09: 0000000000004000 R10: 00007ffe7ef588b0 R11: 0000000000000246 R12: 00007ffe7ef58910 R13: 0000000000000003 R14: 000000000074cca0 R15: 0000000000000000 INFO: task syz-executor.1:8142 blocked for more than 140 seconds. Not tainted 4.19.171-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D23960 8142 8141 0x00000000 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: 0033:0x460d2a Code: 8b 52 08 48 89 54 24 30 e8 93 30 fd ff 48 8b 44 24 30 48 89 04 24 48 8b 44 24 28 48 89 44 24 08 48 8b 44 24 20 48 89 44 24 10 11 32 fd ff 80 7c 24 18 00 75 16 c7 04 24 02 00 00 00 e8 4e 51 RSP: 002b:00007ffe3c299628 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffe3c299650 RCX: 0000000000460d2a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000074ee60 R08: 00007ffe3c29964c R09: 0000000000004000 R10: 00007ffe3c299650 R11: 0000000000000246 R12: 00007ffe3c2996b0 R13: 0000000000000003 R14: 000000000074cca0 R15: 0000000000000000 INFO: task syz-executor.2:8144 blocked for more than 140 seconds. Not tainted 4.19.171-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D24096 8144 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 get_entries net/ipv4/netfilter/ip_tables.c:1023 [inline] do_ipt_get_ctl+0x33c/0x8d0 net/ipv4/netfilter/ip_tables.c:1703 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: 0033:0x460d2a Code: 8b 52 08 48 89 54 24 30 e8 93 30 fd ff 48 8b 44 24 30 48 89 04 24 48 8b 44 24 28 48 89 44 24 08 48 8b 44 24 20 48 89 44 24 10 11 32 fd ff 80 7c 24 18 00 75 16 c7 04 24 02 00 00 00 e8 4e 51 RSP: 002b:00007fffe24e9a58 EFLAGS: 00000216 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007fffe24e9a80 RCX: 0000000000460d2a RDX: 0000000000000041 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000074ee60 R08: 00007fffe24e9a7c R09: 0000000000004000 R10: 00007fffe24e9ae0 R11: 0000000000000216 R12: 00007fffe24e9ae0 R13: 0000000000000003 R14: 000000000074cca0 R15: 0000000000000000 INFO: task syz-executor.3:8146 blocked for more than 140 seconds. Not tainted 4.19.171-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D24216 8146 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: 0033:0x460d2a Code: 8b 52 08 48 89 54 24 30 e8 93 30 fd ff 48 8b 44 24 30 48 89 04 24 48 8b 44 24 28 48 89 44 24 08 48 8b 44 24 20 48 89 44 24 10 11 32 fd ff 80 7c 24 18 00 75 16 c7 04 24 02 00 00 00 e8 4e 51 RSP: 002b:00007ffc552bbda8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000460d2a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffc552bbdcc R09: 0000000000000000 R10: 000000000074cca8 R11: 0000000000000246 R12: 00000000004c419a R13: 000000000074ee60 R14: 000000000074cca8 R15: 000000000074cca0 INFO: task syz-executor.4:8148 blocked for more than 140 seconds. Not tainted 4.19.171-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D24368 8148 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: 0033:0x460d2a Code: 8b 52 08 48 89 54 24 30 e8 93 30 fd ff 48 8b 44 24 30 48 89 04 24 48 8b 44 24 28 48 89 44 24 08 48 8b 44 24 20 48 89 44 24 10 11 32 fd ff 80 7c 24 18 00 75 16 c7 04 24 02 00 00 00 e8 4e 51 RSP: 002b:00007ffdb42cbad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000460d2a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffdb42cbafc R09: 0000000000000000 R10: 000000000074cca8 R11: 0000000000000246 R12: 00000000004c419a R13: 000000000074ee60 R14: 000000000074cca8 R15: 000000000074cca0 INFO: task syz-executor.5:8150 blocked for more than 140 seconds. Not tainted 4.19.171-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D24600 8150 8149 0x00000000 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 __do_replace+0x1d7/0x860 net/ipv4/netfilter/ip_tables.c:1070 do_replace net/ipv4/netfilter/ip_tables.c:1143 [inline] do_ipt_set_ctl+0x2d2/0x420 net/ipv4/netfilter/ip_tables.c:1675 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x6f/0xc0 net/netfilter/nf_sockopt.c:115 ip_setsockopt net/ipv4/ip_sockglue.c:1258 [inline] ip_setsockopt+0xd8/0xf0 net/ipv4/ip_sockglue.c:1238 tcp_setsockopt+0x86/0xd0 net/ipv4/tcp.c:3097 __sys_setsockopt+0x14d/0x240 net/socket.c:1901 __do_sys_setsockopt net/socket.c:1912 [inline] __se_sys_setsockopt net/socket.c:1909 [inline] __x64_sys_setsockopt+0xba/0x150 net/socket.c:1909 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x460d4a Code: 48 8b 44 24 20 48 89 44 24 10 e8 11 32 fd ff 80 7c 24 18 00 75 16 c7 04 24 02 00 00 00 e8 4e 51 00 00 48 8b 6c 24 38 48 83 c4 <40> c3 e8 0f 99 fe ff eb e3 e8 38 18 00 00 e9 73 ff ff ff cc cc cc RSP: 002b:00007ffed89b2128 EFLAGS: 00000206 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007ffed89b2150 RCX: 0000000000460d4a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000074ee60 R08: 0000000000000240 R09: 0000000000004000 R10: 000000000074e140 R11: 0000000000000206 R12: 00007ffed89b21b0 R13: 0000000000000003 R14: 000000000074e0e0 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/1564: #0: 00000000ff11b7bb (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 1 lock held by in:imklog/7851: #0: 0000000040d3d2b9 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 1 lock held by syz-executor.0/8140: #0: 0000000048371035 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 1 lock held by syz-executor.1/8142: #0: 0000000048371035 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 1 lock held by syz-executor.2/8144: #0: 0000000048371035 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 1 lock held by syz-executor.3/8146: #0: 0000000048371035 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 1 lock held by syz-executor.4/8148: #0: 0000000048371035 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 1 lock held by syz-executor.5/8150: #0: 0000000048371035 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1564 Comm: khungtaskd Not tainted 4.19.171-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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4691 Comm: kworker/0:2 Not tainted 4.19.171-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_power_efficient gc_worker RIP: 0010:lockdep_hardirqs_on+0x1a0/0x5c0 kernel/locking/lockdep.c:2872 Code: 0b 85 ff 0f 85 80 00 00 00 48 c7 c0 88 7e 26 8b 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 0f b6 14 11 38 c2 <7f> 08 84 d2 0f 85 c1 02 00 00 80 3d b7 42 db 09 00 0f 85 e5 02 00 RSP: 0018:ffff88809f51fc40 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 1ffffffff164cfd1 RDX: 0000000000000000 RSI: ffffffff81677df5 RDI: 0000000000000000 RBP: ffffffff86a2744c R08: ffffffff8cd28bf0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000200 R13: 0000000000010000 R14: dffffc0000000000 R15: 0000000000000200 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f19890ab000 CR3: 00000000a2ee6000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] read_seqcount_begin include/linux/seqlock.h:164 [inline] nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:302 [inline] gc_worker+0x96c/0xd90 net/netfilter/nf_conntrack_core.c:1219 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415