============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #176 Not tainted ----------------------------- net/ipv6/ip6_fib.c:1702 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 3 locks held by syz-executor3/27845: #0: (rtnl_mutex){+.+.}, at: [<000000001e6f1046>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (rcu_read_lock){....}, at: [<000000006229bbbd>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<0000000016224d81>] spin_lock_bh include/linux/spinlock.h:315 [inline] #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<0000000016224d81>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 stack backtrace: CPU: 0 PID: 27845 Comm: syz-executor3 Not tainted 4.15.0-rc5+ #176 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+0x194/0x257 lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4585 fib6_del+0xcaa/0x11b0 net/ipv6/ip6_fib.c:1701 fib6_clean_node+0x3aa/0x4f0 net/ipv6/ip6_fib.c:1892 fib6_walk_continue+0x46c/0x8a0 net/ipv6/ip6_fib.c:1815 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:1863 fib6_clean_tree+0x1e6/0x340 net/ipv6/ip6_fib.c:1933 __fib6_clean_all+0x1f4/0x3a0 net/ipv6/ip6_fib.c:1949 fib6_clean_all+0x27/0x30 net/ipv6/ip6_fib.c:1960 rt6_ifdown+0xd1/0x6a0 net/ipv6/route.c:3490 addrconf_ifdown+0x134/0x14f0 net/ipv6/addrconf.c:3589 addrconf_notify+0x5eb/0x22e0 net/ipv6/addrconf.c:3514 notifier_call_chain+0x136/0x2c0 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x32/0x70 net/core/dev.c:1696 call_netdevice_notifiers net/core/dev.c:1714 [inline] __dev_notify_flags+0x262/0x430 net/core/dev.c:6896 dev_change_flags+0xf5/0x140 net/core/dev.c:6930 dev_ifsioc+0x60d/0x9b0 net/core/dev_ioctl.c:257 dev_ioctl+0x2d7/0xfb0 net/core/dev_ioctl.c:566 sock_do_ioctl+0x94/0xb0 net/socket.c:963 sock_ioctl+0x2c2/0x440 net/socket.c:1053 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 entry_SYSCALL_64_fastpath+0x23/0x9a RIP: 0033:0x452ac9 RSP: 002b:00007f116f024c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 00000000208ad000 RSI: 0000000000008914 RDI: 0000000000000013 RBP: 00000000000004db R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f5528 R13: 00000000ffffffff R14: 00007f116f0256d4 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #176 Not tainted ----------------------------- net/ipv6/ip6_fib.c:1729 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 3 locks held by syz-executor3/27845: #0: (rtnl_mutex){+.+.}, at: [<000000001e6f1046>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (rcu_read_lock){....}, at: [<000000006229bbbd>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<0000000016224d81>] spin_lock_bh include/linux/spinlock.h:315 [inline] #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<0000000016224d81>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 stack backtrace: CPU: 0 PID: 27845 Comm: syz-executor3 Not tainted 4.15.0-rc5+ #176 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+0x194/0x257 lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4585 fib6_del+0x425/0x11b0 net/ipv6/ip6_fib.c:1728 fib6_clean_node+0x3aa/0x4f0 net/ipv6/ip6_fib.c:1892 fib6_walk_continue+0x46c/0x8a0 net/ipv6/ip6_fib.c:1815 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:1863 fib6_clean_tree+0x1e6/0x340 net/ipv6/ip6_fib.c:1933 __fib6_clean_all+0x1f4/0x3a0 net/ipv6/ip6_fib.c:1949 fib6_clean_all+0x27/0x30 net/ipv6/ip6_fib.c:1960 rt6_ifdown+0xd1/0x6a0 net/ipv6/route.c:3490 addrconf_ifdown+0x134/0x14f0 net/ipv6/addrconf.c:3589 addrconf_notify+0x5eb/0x22e0 net/ipv6/addrconf.c:3514 notifier_call_chain+0x136/0x2c0 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x32/0x70 net/core/dev.c:1696 call_netdevice_notifiers net/core/dev.c:1714 [inline] __dev_notify_flags+0x262/0x430 net/core/dev.c:6896 dev_change_flags+0xf5/0x140 net/core/dev.c:6930 dev_ifsioc+0x60d/0x9b0 net/core/dev_ioctl.c:257 dev_ioctl+0x2d7/0xfb0 net/core/dev_ioctl.c:566 sock_do_ioctl+0x94/0xb0 net/socket.c:963 sock_ioctl+0x2c2/0x440 net/socket.c:1053 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 entry_SYSCALL_64_fastpath+0x23/0x9a RIP: 0033:0x452ac9 RSP: 002b:00007f116f024c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 00000000208ad000 RSI: 0000000000008914 RDI: 0000000000000013 RBP: 00000000000004db R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f5528 R13: 00000000ffffffff R14: 00007f116f0256d4 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #176 Not tainted ----------------------------- net/ipv6/ip6_fib.c:1639 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 3 locks held by syz-executor3/27845: #0: (rtnl_mutex){+.+.}, at: [<000000001e6f1046>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (rcu_read_lock){....}, at: [<000000006229bbbd>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<0000000016224d81>] spin_lock_bh include/linux/spinlock.h:315 [inline] #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<0000000016224d81>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 stack backtrace: CPU: 0 PID: 27845 Comm: syz-executor3 Not tainted 4.15.0-rc5+ #176 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+0x194/0x257 lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4585 fib6_del_route net/ipv6/ip6_fib.c:1638 [inline] fib6_del+0xd18/0x11b0 net/ipv6/ip6_fib.c:1731 fib6_clean_node+0x3aa/0x4f0 net/ipv6/ip6_fib.c:1892 fib6_walk_continue+0x46c/0x8a0 net/ipv6/ip6_fib.c:1815 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:1863 fib6_clean_tree+0x1e6/0x340 net/ipv6/ip6_fib.c:1933 __fib6_clean_all+0x1f4/0x3a0 net/ipv6/ip6_fib.c:1949 fib6_clean_all+0x27/0x30 net/ipv6/ip6_fib.c:1960 rt6_ifdown+0xd1/0x6a0 net/ipv6/route.c:3490 addrconf_ifdown+0x134/0x14f0 net/ipv6/addrconf.c:3589 addrconf_notify+0x5eb/0x22e0 net/ipv6/addrconf.c:3514 notifier_call_chain+0x136/0x2c0 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x32/0x70 net/core/dev.c:1696 call_netdevice_notifiers net/core/dev.c:1714 [inline] __dev_notify_flags+0x262/0x430 net/core/dev.c:6896 dev_change_flags+0xf5/0x140 net/core/dev.c:6930 dev_ifsioc+0x60d/0x9b0 net/core/dev_ioctl.c:257 dev_ioctl+0x2d7/0xfb0 net/core/dev_ioctl.c:566 sock_do_ioctl+0x94/0xb0 net/socket.c:963 sock_ioctl+0x2c2/0x440 net/socket.c:1053 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 entry_SYSCALL_64_fastpath+0x23/0x9a RIP: 0033:0x452ac9 RSP: 002b:00007f116f024c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 00000000208ad000 RSI: 0000000000008914 RDI: 0000000000000013 RBP: 00000000000004db R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f5528 R13: 00000000ffffffff R14: 00007f116f0256d4 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #176 Not tainted ----------------------------- net/ipv6/ip6_fib.c:1676 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 4 locks held by syz-executor3/27845: #0: (rtnl_mutex){+.+.}, at: [<000000001e6f1046>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (rcu_read_lock){....}, at: [<000000006229bbbd>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<0000000016224d81>] spin_lock_bh include/linux/spinlock.h:315 [inline] #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<0000000016224d81>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 #3: (&net->ipv6.fib6_walker_lock){++--}, at: [<00000000c00212b2>] fib6_del_route net/ipv6/ip6_fib.c:1671 [inline] #3: (&net->ipv6.fib6_walker_lock){++--}, at: [<00000000c00212b2>] fib6_del+0x935/0x11b0 net/ipv6/ip6_fib.c:1731 stack backtrace: CPU: 0 PID: 27845 Comm: syz-executor3 Not tainted 4.15.0-rc5+ #176 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+0x194/0x257 lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4585 fib6_del_route net/ipv6/ip6_fib.c:1675 [inline] fib6_del+0xeb3/0x11b0 net/ipv6/ip6_fib.c:1731 fib6_clean_node+0x3aa/0x4f0 net/ipv6/ip6_fib.c:1892 fib6_walk_continue+0x46c/0x8a0 net/ipv6/ip6_fib.c:1815 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:1863 fib6_clean_tree+0x1e6/0x340 net/ipv6/ip6_fib.c:1933 __fib6_clean_all+0x1f4/0x3a0 net/ipv6/ip6_fib.c:1949 fib6_clean_all+0x27/0x30 net/ipv6/ip6_fib.c:1960 rt6_ifdown+0xd1/0x6a0 net/ipv6/route.c:3490 addrconf_ifdown+0x134/0x14f0 net/ipv6/addrconf.c:3589 addrconf_notify+0x5eb/0x22e0 net/ipv6/addrconf.c:3514 notifier_call_chain+0x136/0x2c0 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x32/0x70 net/core/dev.c:1696 call_netdevice_notifiers net/core/dev.c:1714 [inline] __dev_notify_flags+0x262/0x430 net/core/dev.c:6896 dev_change_flags+0xf5/0x140 net/core/dev.c:6930 dev_ifsioc+0x60d/0x9b0 net/core/dev_ioctl.c:257 dev_ioctl+0x2d7/0xfb0 net/core/dev_ioctl.c:566 sock_do_ioctl+0x94/0xb0 net/socket.c:963 sock_ioctl+0x2c2/0x440 net/socket.c:1053 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 entry_SYSCALL_64_fastpath+0x23/0x9a RIP: 0033:0x452ac9 RSP: 002b:00007f116f024c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 00000000208ad000 RSI: 0000000000008914 RDI: 0000000000000013 RBP: 00000000000004db R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f5528 R13: 00000000ffffffff R14: 00007f116f0256d4 R15: 0000000000000000 nla_parse: 1 callbacks suppressed netlink: 11 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor5'. 8021q: VLANs not supported on lo netlink: 3 bytes leftover after parsing attributes in process `syz-executor3'. SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=28153 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=28153 comm=syz-executor7 netlink: 11 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'. Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable dccp_invalid_packet: P.type (REQUEST) not Data || [Data]Ack, while P.X == 0 netlink: 'syz-executor6': attribute type 10 has an invalid length. netlink: 'syz-executor6': attribute type 10 has an invalid length. do_dccp_setsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app do_dccp_setsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app device lo left promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): lo: link is not ready device lo left promiscuous mode device ip6_vti0 entered promiscuous mode device ip6_vti0 left promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=38536 sclass=netlink_route_socket pig=29462 comm=syz-executor5 nla_parse: 24 callbacks suppressed netlink: 17 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 137 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 137 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 'syz-executor4': attribute type 7 has an invalid length. netlink: 'syz-executor4': attribute type 7 has an invalid length. 8021q: VLANs not supported on lo 8021q: VLANs not supported on lo netlink: 5 bytes leftover after parsing attributes in process `syz-executor4'. dccp_v6_rcv: dropped packet with invalid checksum dccp_v6_rcv: dropped packet with invalid checksum netlink: 188 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 188 bytes leftover after parsing attributes in process `syz-executor5'. sctp: [Deprecated]: syz-executor1 (pid 29861) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor1 (pid 29871) Use of int in maxseg socket option. Use struct sctp_assoc_value instead netlink: 14 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 14 bytes leftover after parsing attributes in process `syz-executor1'. openvswitch: netlink: Flow key attr not present in new flow. netlink: 5 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor6'. openvswitch: netlink: Flow key attr not present in new flow.