RBP: 00007f798c115ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000b R13: 00007ffc279cde0f R14: 00007f798c1169c0 R15: 000000000118bf2c Bluetooth: hci3 command 0x0406 tx timeout INFO: task syz-executor.0:18560 blocked for more than 140 seconds. Not tainted 4.14.206-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29560 18560 7986 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 SYSC_sendto net/socket.c:1763 [inline] SyS_sendto+0x1c7/0x2c0 net/socket.c:1731 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x417937 RSP: 002b:00007f41d1335b40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f41d1335bf0 RCX: 0000000000417937 RDX: 0000000000000020 RSI: 00007f41d1335c40 RDI: 0000000000000006 RBP: 0000000000000000 R08: 00007f41d1335b50 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 00007f41d1335bb4 R13: 0000000000000010 R14: 00007f41d1335c40 R15: 0000000000000006 INFO: task syz-executor.1:18569 blocked for more than 140 seconds. Not tainted 4.14.206-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29560 18569 7990 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 SYSC_sendto net/socket.c:1763 [inline] SyS_sendto+0x1c7/0x2c0 net/socket.c:1731 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x417937 RSP: 002b:00007f2595bc2b40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f2595bc2bf0 RCX: 0000000000417937 RDX: 0000000000000020 RSI: 00007f2595bc2c40 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f2595bc2b50 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 00007f2595bc2bb4 R13: 0000000000000010 R14: 00007f2595bc2c40 R15: 0000000000000004 INFO: task syz-executor.1:18585 blocked for more than 140 seconds. Not tainted 4.14.206-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29176 18585 7990 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 SYSC_sendto net/socket.c:1763 [inline] SyS_sendto+0x1c7/0x2c0 net/socket.c:1731 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x417937 RSP: 002b:00007f2595ba1b40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f2595ba1bf0 RCX: 0000000000417937 RDX: 0000000000000020 RSI: 00007f2595ba1c40 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007f2595ba1b50 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 00007f2595ba1bb4 R13: 0000000000000010 R14: 00007f2595ba1c40 R15: 0000000000000005 INFO: task syz-executor.1:18592 blocked for more than 140 seconds. Not tainted 4.14.206-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D30384 18592 7990 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 vlan_ioctl_handler+0x9a/0xc9e net/8021q/vlan.c:517 sock_ioctl+0x32c/0x4c0 net/socket.c:1049 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45deb9 RSP: 002b:00007f2595b81c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000001dd80 RCX: 000000000045deb9 RDX: 00000000200002c0 RSI: 0000000000008982 RDI: 0000000000000003 RBP: 000000000118c0b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118c07c R13: 00007ffd0a44ea7f R14: 00007f2595b829c0 R15: 000000000118c07c INFO: task syz-executor.1:18596 blocked for more than 140 seconds. Not tainted 4.14.206-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29176 18596 7990 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 SYSC_sendto net/socket.c:1763 [inline] SyS_sendto+0x1c7/0x2c0 net/socket.c:1731 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x417937 RSP: 002b:00007f2595b5fb40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f2595b5fbf0 RCX: 0000000000417937 RDX: 0000000000000020 RSI: 00007f2595b5fc40 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f2595b5fb50 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 00007f2595b5fbb4 R13: 0000000000000010 R14: 00007f2595b5fc40 R15: 0000000000000004 INFO: task syz-executor.1:18599 blocked for more than 140 seconds. Not tainted 4.14.206-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29344 18599 7990 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 SYSC_sendto net/socket.c:1763 [inline] SyS_sendto+0x1c7/0x2c0 net/socket.c:1731 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x417937 RSP: 002b:00007f2595b3eb40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f2595b3ebf0 RCX: 0000000000417937 RDX: 0000000000000020 RSI: 00007f2595b3ec40 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007f2595b3eb50 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 00007f2595b3ebb4 R13: 0000000000000010 R14: 00007f2595b3ec40 R15: 0000000000000005 INFO: task syz-executor.1:18600 blocked for more than 140 seconds. Not tainted 4.14.206-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29176 18600 7990 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 sock_ioctl+0x313/0x4c0 net/socket.c:1047 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45deb9 RSP: 002b:00007f2595b1ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000001dd80 RCX: 000000000045deb9 RDX: 00000000200002c0 RSI: 0000000000008982 RDI: 0000000000000003 RBP: 000000000118c2a8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118c274 R13: 00007ffd0a44ea7f R14: 00007f2595b1f9c0 R15: 000000000118c274 INFO: task syz-executor.3:18576 blocked for more than 140 seconds. Not tainted 4.14.206-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29560 18576 7991 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 SYSC_sendto net/socket.c:1763 [inline] SyS_sendto+0x1c7/0x2c0 net/socket.c:1731 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x417937 RSP: 002b:00007f03dcf8ab40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f03dcf8abf0 RCX: 0000000000417937 RDX: 0000000000000020 RSI: 00007f03dcf8ac40 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f03dcf8ab50 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 00007f03dcf8abb4 R13: 0000000000000010 R14: 00007f03dcf8ac40 R15: 0000000000000004 INFO: task syz-executor.2:18591 blocked for more than 140 seconds. Not tainted 4.14.206-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D29560 18591 7987 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 SYSC_sendto net/socket.c:1763 [inline] SyS_sendto+0x1c7/0x2c0 net/socket.c:1731 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x417937 RSP: 002b:00007fdfe46f5b40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fdfe46f5bf0 RCX: 0000000000417937 RDX: 0000000000000020 RSI: 00007fdfe46f5c40 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007fdfe46f5b50 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 00007fdfe46f5bb4 R13: 0000000000000010 R14: 00007fdfe46f5c40 R15: 0000000000000004 INFO: task syz-executor.5:18588 blocked for more than 140 seconds. Not tainted 4.14.206-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D29560 18588 11440 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 SYSC_sendto net/socket.c:1763 [inline] SyS_sendto+0x1c7/0x2c0 net/socket.c:1731 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x417937 RSP: 002b:00007fc36c754b40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fc36c754bf0 RCX: 0000000000417937 RDX: 0000000000000020 RSI: 00007fc36c754c40 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007fc36c754b50 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 00007fc36c754bb4 R13: 0000000000000010 R14: 00007fc36c754c40 R15: 0000000000000004 Showing all locks held in the system: 3 locks held by kworker/0:0/3: #0: ("%s"("ipv6_addrconf")){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087 #1: ((addr_chk_work).work){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091 #2: (rtnl_mutex){+.+.}, at: [] addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4412 1 lock held by khungtaskd/1532: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 2 locks held by agetty/7692: #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e3/0x1680 drivers/tty/n_tty.c:2156 3 locks held by kworker/0:3/9107: #0: ("events"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087 #1: (deferred_process_work){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091 #2: (rtnl_mutex){+.+.}, at: [] switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 2 locks held by syz-executor.2/13933: #0: (&sb->s_type->i_mutex_key#13){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #0: (&sb->s_type->i_mutex_key#13){+.+.}, at: [] __sock_release+0x86/0x2b0 net/socket.c:601 #1: (rtnl_mutex){+.+.}, at: [] raw_close+0xe/0x30 net/ipv4/raw.c:701 2 locks held by syz-executor.0/18560: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 2 locks held by syz-executor.1/18569: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 2 locks held by syz-executor.1/18585: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 2 locks held by syz-executor.1/18592: #0: (vlan_ioctl_mutex){+.+.}, at: [] sock_ioctl+0x313/0x4c0 net/socket.c:1047 #1: (rtnl_mutex){+.+.}, at: [] vlan_ioctl_handler+0x9a/0xc9e net/8021q/vlan.c:517 2 locks held by syz-executor.1/18596: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 2 locks held by syz-executor.1/18599: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 1 lock held by syz-executor.1/18600: #0: (vlan_ioctl_mutex){+.+.}, at: [] sock_ioctl+0x313/0x4c0 net/socket.c:1047 2 locks held by syz-executor.3/18576: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 2 locks held by syz-executor.2/18591: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 2 locks held by syz-executor.5/18588: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 2 locks held by syz-executor.5/18593: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 2 locks held by syz-executor.5/18597: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 2 locks held by syz-executor.5/18598: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 2 locks held by syz-executor.5/18603: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 2 locks held by syz-executor.5/18604: #0: (cb_lock){++++}, at: [] genl_rcv+0x15/0x40 net/netlink/genetlink.c:635 #1: (genl_mutex){+.+.}, at: [] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [] genl_rcv_msg+0x112/0x140 net/netlink/genetlink.c:623 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1532 Comm: khungtaskd Not tainted 4.14.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5b9/0xb40 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 9461 Comm: kworker/u4:7 Not tainted 4.14.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker task: ffff88805a36a000 task.stack: ffff88805a370000 RIP: 0010:rcu_is_watching+0x7a/0xb0 kernel/rcu/tree.c:1131 RSP: 0000:ffff88805a377cc0 EFLAGS: 00000286 RAX: 0000000000000001 RBX: ffff8880ba422a40 RCX: 1ffffffff1197dac RDX: 0000000000000000 RSI: ffffffff87cccca0 RDI: ffff8880ba422a4c RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000020012 R10: ffff88805a36a8d8 R11: ffff88805a36a000 R12: dffffc0000000000 R13: ffff8880afe97c00 R14: ffff88813fe188c0 R15: ffff8880a493e000 FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2b9cc63000 CR3: 00000000a2179000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_unlock include/linux/rcupdate.h:681 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:420 [inline] batadv_nc_worker+0x83d/0xc50 net/batman-adv/network-coding.c:726 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 22 8b 43 0c d1 e8 83 e0 01 65 ff 0d d6 30 b9 7e <74> 06 48 83 c4 08 5b c3 e8 1c 73 b7 ff 48 83 c4 08 5b c3 e8 7e