============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #173 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-executor3/24434: #0: (rtnl_mutex){+.+.}, at: [<0000000014d231bf>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (rcu_read_lock){....}, at: [<00000000d32d8af4>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000886779aa>] spin_lock_bh include/linux/spinlock.h:315 [inline] #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000886779aa>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 stack backtrace: CPU: 1 PID: 24434 Comm: syz-executor3 Not tainted 4.15.0-rc5+ #173 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 devinet_ioctl+0x125b/0x19e0 net/ipv4/devinet.c:1083 inet_ioctl+0x117/0x1c0 net/ipv4/af_inet.c:903 packet_ioctl+0x1ff/0x310 net/packet/af_packet.c:4068 sock_do_ioctl+0x65/0xb0 net/socket.c:956 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:00007f48fb2d3c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 0000000020800000 RSI: 0000000000008914 RDI: 0000000000000013 RBP: 0000000000000019 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee2f8 R13: 00000000ffffffff R14: 00007f48fb2d46d4 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #173 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-executor3/24434: #0: (rtnl_mutex){+.+.}, at: [<0000000014d231bf>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (rcu_read_lock){....}, at: [<00000000d32d8af4>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000886779aa>] spin_lock_bh include/linux/spinlock.h:315 [inline] #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000886779aa>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 stack backtrace: CPU: 1 PID: 24434 Comm: syz-executor3 Not tainted 4.15.0-rc5+ #173 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 devinet_ioctl+0x125b/0x19e0 net/ipv4/devinet.c:1083 inet_ioctl+0x117/0x1c0 net/ipv4/af_inet.c:903 packet_ioctl+0x1ff/0x310 net/packet/af_packet.c:4068 sock_do_ioctl+0x65/0xb0 net/socket.c:956 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:00007f48fb2d3c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 0000000020800000 RSI: 0000000000008914 RDI: 0000000000000013 RBP: 0000000000000019 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee2f8 R13: 00000000ffffffff R14: 00007f48fb2d46d4 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #173 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-executor3/24434: #0: (rtnl_mutex){+.+.}, at: [<0000000014d231bf>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (rcu_read_lock){....}, at: [<00000000d32d8af4>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000886779aa>] spin_lock_bh include/linux/spinlock.h:315 [inline] #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000886779aa>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 stack backtrace: CPU: 1 PID: 24434 Comm: syz-executor3 Not tainted 4.15.0-rc5+ #173 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 devinet_ioctl+0x125b/0x19e0 net/ipv4/devinet.c:1083 inet_ioctl+0x117/0x1c0 net/ipv4/af_inet.c:903 packet_ioctl+0x1ff/0x310 net/packet/af_packet.c:4068 sock_do_ioctl+0x65/0xb0 net/socket.c:956 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:00007f48fb2d3c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 0000000020800000 RSI: 0000000000008914 RDI: 0000000000000013 RBP: 0000000000000019 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee2f8 R13: 00000000ffffffff R14: 00007f48fb2d46d4 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #173 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-executor3/24434: #0: (rtnl_mutex){+.+.}, at: [<0000000014d231bf>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (rcu_read_lock){....}, at: [<00000000d32d8af4>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000886779aa>] spin_lock_bh include/linux/spinlock.h:315 [inline] #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000886779aa>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 #3: (&net->ipv6.fib6_walker_lock){++-.}, at: [<000000005e1a45b9>] fib6_del_route net/ipv6/ip6_fib.c:1671 [inline] #3: (&net->ipv6.fib6_walker_lock){++-.}, at: [<000000005e1a45b9>] fib6_del+0x935/0x11b0 net/ipv6/ip6_fib.c:1731 stack backtrace: CPU: 1 PID: 24434 Comm: syz-executor3 Not tainted 4.15.0-rc5+ #173 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 devinet_ioctl+0x125b/0x19e0 net/ipv4/devinet.c:1083 inet_ioctl+0x117/0x1c0 net/ipv4/af_inet.c:903 packet_ioctl+0x1ff/0x310 net/packet/af_packet.c:4068 sock_do_ioctl+0x65/0xb0 net/socket.c:956 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:00007f48fb2d3c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 0000000020800000 RSI: 0000000000008914 RDI: 0000000000000013 RBP: 0000000000000019 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ee2f8 R13: 00000000ffffffff R14: 00007f48fb2d46d4 R15: 0000000000000000 netlink: 'syz-executor5': attribute type 25 has an invalid length. netlink: 'syz-executor5': attribute type 1 has an invalid length. netlink: 'syz-executor5': attribute type 1 has an invalid length. netlink: 'syz-executor4': attribute type 1 has an invalid length. netlink: 'syz-executor4': attribute type 1 has an invalid length. nla_parse: 13 callbacks suppressed netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=260 sclass=netlink_route_socket pig=24986 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=260 sclass=netlink_route_socket pig=24986 comm=syz-executor1 netlink: 'syz-executor3': attribute type 1 has an invalid length. netlink: 3 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 'syz-executor3': attribute type 1 has an invalid length. netlink: 3 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 'syz-executor6': attribute type 10 has an invalid length. netlink: 'syz-executor6': attribute type 10 has an invalid length. netlink: 2 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. device lo entered promiscuous mode IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready openvswitch: netlink: Message has 6 unknown bytes. openvswitch: netlink: Message has 6 unknown bytes. sctp: [Deprecated]: syz-executor0 (pid 26244) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor0 (pid 26314) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor0 (pid 26328) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead dccp_v6_rcv: dropped packet with invalid checksum dccp_v6_rcv: dropped packet with invalid checksum netlink: 'syz-executor4': attribute type 1 has an invalid length. mip6: mip6_rthdr_init_state: spi is not 0: 3590586368 nla_parse: 22 callbacks suppressed netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor2'.