Bluetooth: hci0: command 0x0406 tx timeout Bluetooth: hci1: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout INFO: task syz-executor.2:8135 blocked for more than 140 seconds. Not tainted 4.19.169-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D24192 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: 0033:0x460d2a 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:00007ffd1cdfa148 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000460d2a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffd1cdfa16c R09: 0000000000000000 R10: 000000000074cca8 R11: 0000000000000246 R12: 00000000004c419a R13: 000000000074ee60 R14: 000000000074cca8 R15: 000000000074cca0 INFO: task syz-executor.3:8137 blocked for more than 140 seconds. Not tainted 4.19.169-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D24368 8137 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_security_table_init net/ipv4/netfilter/iptable_security.c:62 [inline] iptable_security_table_init+0x82/0xc0 net/ipv4/netfilter/iptable_security.c:51 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: 0033:0x460d2a 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:00007ffc507e6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000460d2a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffc507e618c R09: 0000000000000000 R10: 000000000074e7a8 R11: 0000000000000246 R12: 00000000004cc64d R13: 000000000074ee60 R14: 000000000074e7a8 R15: 000000000074e7a0 INFO: task syz-executor.5:8141 blocked for more than 140 seconds. Not tainted 4.19.169-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D23232 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: 0033:0x460d2a 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:00007fff07c480d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000460d2a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007fff07c480fc R09: 0000000000000000 R10: 000000000074cca8 R11: 0000000000000246 R12: 00000000004c419a R13: 000000000074ee60 R14: 000000000074cca8 R15: 000000000074cca0 Showing all locks held in the system: 2 locks held by kworker/u4:1/23: #0: 00000000427cc35d (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1824 [inline] #0: 00000000427cc35d (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 #1: 0000000057c6bf1b (rcu_read_lock){....}, at: cpu_of kernel/sched/sched.h:921 [inline] #1: 0000000057c6bf1b (rcu_read_lock){....}, at: __update_idle_core+0x39/0x3e0 kernel/sched/fair.c:6057 1 lock held by khungtaskd/1566: #0: 0000000057c6bf1b (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 1 lock held by syz-executor.2/8135: #0: 000000009da5e1f6 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 1 lock held by syz-executor.3/8137: #0: 000000009da5e1f6 (&xt[i].mutex){+.+.}, at: xt_register_table+0xda/0x5d0 net/netfilter/x_tables.c:1425 1 lock held by syz-executor.5/8141: #0: 000000009da5e1f6 (&xt[i].mutex){+.+.}, at: xt_find_table_lock+0x3d/0x430 net/netfilter/x_tables.c:1211 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1566 Comm: khungtaskd Not tainted 4.19.169-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: 64 Comm: kworker/u4:2 Not tainted 4.19.169-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy10 ieee80211_iface_work RIP: 0010:write_comp_data+0x23/0x70 kernel/kcov.c:122 Code: 1f 84 00 00 00 00 00 49 89 f1 49 89 fa 65 48 8b 34 25 80 df 01 00 65 8b 05 5a 84 9f 7e a9 00 01 1f 00 75 4f 8b 86 d8 12 00 00 <83> f8 03 75 44 48 8b 86 e0 12 00 00 8b b6 dc 12 00 00 48 8b 38 48 RSP: 0018:ffff8880b5217618 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000011 RCX: ffffffff87a19737 RDX: 0000000000000011 RSI: ffff8880b520a200 RDI: 0000000000000006 RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000002 R10: 0000000000000006 R11: 0000000000000000 R12: 0000000000000006 R13: 0000000000000002 R14: ffff88809700f8cb R15: ffff88809700f8c9 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fea1463d000 CR3: 00000000a10bb000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee802_11_parse_elems_crc+0x197/0x1bf0 net/mac80211/util.c:793 ieee802_11_parse_elems net/mac80211/ieee80211_i.h:1947 [inline] ieee80211_rx_mgmt_probe_beacon+0x17a/0x15c0 net/mac80211/ibss.c:1604 ieee80211_ibss_rx_queued_mgmt+0xe27/0x18b0 net/mac80211/ibss.c:1634 ieee80211_iface_work+0x5c4/0x8a0 net/mac80211/iface.c:1345 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