IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 8021q: adding VLAN 0 to HW filter on device team0 INFO: task syz-executor0:6414 blocked for more than 140 seconds. Not tainted 4.20.0-rc6+ #274 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D22360 6414 6035 0x20020004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 schedule+0xfe/0x460 kernel/sched/core.c:3516 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] ctrl_getfamily+0x313/0x420 net/netlink/genetlink.c:873 genl_family_rcv_msg+0x8a7/0x11a0 net/netlink/genetlink.c:601 genl_rcv_msg+0xc6/0x168 net/netlink/genetlink.c:626 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2477 genl_rcv+0x28/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116 __sys_sendmsg+0x11d/0x280 net/socket.c:2154 __compat_sys_sendmsg net/compat.c:754 [inline] __do_compat_sys_socketcall net/compat.c:919 [inline] __se_compat_sys_socketcall net/compat.c:842 [inline] __ia32_compat_sys_socketcall+0xb81/0x1090 net/compat.c:842 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f35a29 Code: Bad RIP value. RSP: 002b:00000000f7f30e40 EFLAGS: 00000286 ORIG_RAX: 0000000000000066 RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00000000f7f30e54 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000014 RBP: 00000000f7f31168 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by khungtaskd/1024: #0: 000000005be69ad1 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4379 1 lock held by rsyslogd/5904: #0: 00000000d81b3b55 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 2 locks held by getty/5995: #0: 000000002216f599 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000d9dba276 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5996: #0: 00000000f9c213b5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000f440c0d4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5997: #0: 0000000046026358 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000043a55396 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5998: #0: 0000000005a3c150 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000001a19e12f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5999: #0: 000000003bfb9865 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000c701a23a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/6000: #0: 000000002c54a206 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000002616eca3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/6001: #0: 00000000cf1f4fc9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000002f74c546 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by syz-executor0/6414: #0: 00000000e5ede72f (cb_lock){++++}, at: ctrl_getfamily+0x305/0x420 net/netlink/genetlink.c:872 #1: 0000000027f53533 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 0000000027f53533 (genl_mutex){+.+.}, at: ctrl_getfamily+0x313/0x420 net/netlink/genetlink.c:873 4 locks held by syz-executor0/6416: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1024 Comm: khungtaskd Not tainted 4.20.0-rc6+ #274 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+0x244/0x39d lib/dump_stack.c:113 nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1e8/0x22a lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0xb51/0x1060 kernel/hung_task.c:289 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6416 Comm: syz-executor0 Not tainted 4.20.0-rc6+ #274 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.924 msecs Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:memory_is_poisoned_n mm/kasan/kasan.c:213 [inline] RIP: 0010:memory_is_poisoned mm/kasan/kasan.c:241 [inline] RIP: 0010:check_memory_region_inline mm/kasan/kasan.c:257 [inline] RIP: 0010:check_memory_region+0xbd/0x1b0 mm/kasan/kasan.c:267 Code: c0 08 48 39 c3 0f 84 a8 00 00 00 48 83 38 00 74 ed 4c 8d 40 08 eb 09 48 83 c0 01 49 39 c0 74 0a 80 38 00 74 f2 48 85 c0 75 77 <5b> 41 5c 41 5d 5d c3 41 bd 08 00 00 00 4d 89 c8 41 29 dd 4b 8d 5c RSP: 0018:ffff8881b9bd6788 EFLAGS: 00000246 RAX: ffffed103b5c5b60 RBX: 1ffff1103b5c5b5f RCX: ffffffff816a6b32 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8881dae2daf8 RBP: ffff8881b9bd67a0 R08: ffffed103b5c5b60 R09: ffffed103b5c5b5f R10: ffffed103b5c5b5f R11: ffff8881dae2dafb R12: ffffed103b5c5b60 R13: ffff8881b9bd6828 R14: ffff8881dae2daf8 R15: ffff8881ba058dc0 FS: 0000000000000000(0000) GS:ffff8881dae00000(0063) knlGS:00000000f7f10b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001bd22d000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kasan_check_read+0x11/0x20 mm/kasan/kasan.c:272 atomic_read include/asm-generic/atomic-instrumented.h:21 [inline] rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 kernel/rcu/tree.c:292 rcu_is_watching+0x10/0x30 kernel/rcu/tree.c:906 rcu_read_lock_held+0x87/0xc0 kernel/rcu/update.c:277 net_generic include/net/netns/generic.h:45 [inline] tipc_sk_lookup+0xadf/0xff0 net/tipc/socket.c:2742 tipc_nl_publ_dump+0x22d/0xf93 net/tipc/socket.c:3550 __tipc_nl_compat_dumpit.isra.11+0x25d/0xb60 net/tipc/netlink_compat.c:196 tipc_nl_compat_publ_dump net/tipc/netlink_compat.c:925 [inline] tipc_nl_compat_sk_dump+0x88e/0xc50 net/tipc/netlink_compat.c:973 __tipc_nl_compat_dumpit.isra.11+0x389/0xb60 net/tipc/netlink_compat.c:205 tipc_nl_compat_dumpit+0x1f4/0x440 net/tipc/netlink_compat.c:270 tipc_nl_compat_handle net/tipc/netlink_compat.c:1147 [inline] tipc_nl_compat_recv+0x12b3/0x19a0 net/tipc/netlink_compat.c:1210 genl_family_rcv_msg+0x8a7/0x11a0 net/netlink/genetlink.c:601 genl_rcv_msg+0xc6/0x168 net/netlink/genetlink.c:626 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2477 genl_rcv+0x28/0x40 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116 __sys_sendmsg+0x11d/0x280 net/socket.c:2154 __compat_sys_sendmsg net/compat.c:754 [inline] __do_compat_sys_sendmsg net/compat.c:761 [inline] __se_compat_sys_sendmsg net/compat.c:758 [inline] __ia32_compat_sys_sendmsg+0x7a/0xb0 net/compat.c:758 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f35a29 Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f7f100cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000020000180 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000