Bluetooth: hci5: command 0x041b tx timeout Bluetooth: hci5: command 0x040f tx timeout Bluetooth: hci5: command 0x0419 tx timeout IPVS: ftp: loaded support on port[0] = 21 Bluetooth: hci5: command 0x0406 tx timeout INFO: task syz-executor.1:23274 blocked for more than 140 seconds. Not tainted 4.19.141-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D24712 23274 6470 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 netdev_run_todo+0x719/0xab0 net/core/dev.c:8991 rtnl_unlock net/core/rtnetlink.c:117 [inline] rtnetlink_rcv_msg+0x460/0xb80 net/core/rtnetlink.c:4779 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45d4d9 Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0a887b0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cd80 RCX: 000000000045d4d9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000006 RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffcd06466cf R14: 00007f0a887b19c0 R15: 000000000118cf4c INFO: task syz-executor.5:23340 blocked for more than 140 seconds. Not tainted 4.19.141-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D26424 23340 1 0x80000004 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 ip_tunnel_init_net+0x321/0x990 net/ipv4/ip_tunnel.c:1024 ops_init+0xb3/0x410 net/core/net_namespace.c:129 setup_net+0x2c2/0x720 net/core/net_namespace.c:315 copy_net_ns+0x1f7/0x335 net/core/net_namespace.c:438 create_new_namespaces+0x3f6/0x7b0 kernel/nsproxy.c:107 unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:206 ksys_unshare+0x36c/0x9a0 kernel/fork.c:2530 __do_sys_unshare kernel/fork.c:2598 [inline] __se_sys_unshare kernel/fork.c:2596 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:2596 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45ffa7 Code: 00 00 00 b8 63 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffd646f5468 EFLAGS: 00000206 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 000000000118d9c8 RCX: 000000000045ffa7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000005 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000418d90 R13: 00007ffd646f56d8 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/1089: #0: 000000008daefb96 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440 3 locks held by kworker/1:1H/2315: 1 lock held by in:imklog/6141: #0: 000000001dcc08e4 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 3 locks held by kworker/u4:5/6186: 5 locks held by kworker/u4:2/29530: #0: 00000000097aa072 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 #1: 00000000673386ed (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 #2: 00000000360cd32d (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:520 #3: 0000000027e2b5b6 (rtnl_mutex){+.+.}, at: ip6gre_exit_batch_net+0x82/0x6c0 net/ipv6/ip6_gre.c:1624 #4: 0000000093327b2b (cpu_hotplug_lock.rw_sem){++++}, at: get_online_cpus include/linux/cpu.h:137 [inline] #4: 0000000093327b2b (cpu_hotplug_lock.rw_sem){++++}, at: flush_all_backlogs net/core/dev.c:5276 [inline] #4: 0000000093327b2b (cpu_hotplug_lock.rw_sem){++++}, at: rollback_registered_many+0x38d/0xde0 net/core/dev.c:8172 3 locks held by kworker/1:19/23246: #0: 00000000d34665c6 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126 #1: 00000000d38ddc20 ((addr_chk_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130 #2: 0000000027e2b5b6 (rtnl_mutex){+.+.}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4475 1 lock held by syz-executor.1/23274: #0: 0000000027e2b5b6 (rtnl_mutex){+.+.}, at: netdev_run_todo+0x719/0xab0 net/core/dev.c:8991 2 locks held by syz-executor.5/23340: #0: 00000000360cd32d (pernet_ops_rwsem){++++}, at: copy_net_ns+0x1d8/0x335 net/core/net_namespace.c:434 #1: 0000000027e2b5b6 (rtnl_mutex){+.+.}, at: ip_tunnel_init_net+0x321/0x990 net/ipv4/ip_tunnel.c:1024 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1089 Comm: khungtaskd Not tainted 4.19.141-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/0x2fe lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb 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+0x30b/0x410 kernel/kthread.c:246 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: 3696 Comm: systemd-journal Not tainted 4.19.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:779 [inline] RIP: 0010:debug_check_no_obj_freed+0x101/0x482 lib/debugobjects.c:817 Code: 00 00 49 bc 00 02 00 00 00 00 ad de 4c 89 c0 31 ed 48 c1 e8 03 42 80 3c 38 00 0f 85 dd 00 00 00 49 8d 78 18 83 c5 01 4d 8b 30 <48> 89 f8 48 c1 e8 03 42 80 3c 38 00 0f 85 65 02 00 00 4d 8b 48 18 RSP: 0018:ffff88809471fd78 EFLAGS: 00000002 RAX: 1ffff1101292afc7 RBX: 0000000000000000 RCX: ffffffff8152563b RDX: 1ffffffff175eb83 RSI: 0000000000000004 RDI: ffff888094957e50 RBP: 0000000000000004 R08: ffff888094957e38 R09: ffff88809c9eeae8 R10: ffffffff8baf5c0b R11: 0000000000000000 R12: dead000000000200 R13: ffff8880535aa400 R14: ffff88804d997a80 R15: dffffc0000000000 FS: 00007f62cd65b8c0(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f62c92bc000 CR3: 000000009476b000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kmem_cache_free+0xff/0x260 mm/slab.c:3764 putname+0xe1/0x120 fs/namei.c:261 do_sys_open+0x2ba/0x520 fs/open.c:1094 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f62ccbeb85d Code: bb 20 00 00 75 10 b8 02 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 67 f6 ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffd902c9850 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007ffd902c9b60 RCX: 00007f62ccbeb85d RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 0000557fe5a92d40 RBP: 000000000000000d R08: 000000000000c0c1 R09: 00000000ffffffff R10: 0000000000000069 R11: 0000000000000293 R12: 00000000ffffffff R13: 0000557fe5a8f060 R14: 00007ffd902c9b20 R15: 0000557fe5a9c690