============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #180 Not tainted ----------------------------- net/ipv6/ip6_fib.c:1704 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-executor2/2076: #0: (br_ioctl_mutex){+.+.}, at: [<0000000010410650>] sock_ioctl+0x367/0x440 net/socket.c:1018 #1: (rtnl_mutex){+.+.}, at: [<0000000049b00d40>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #2: (rcu_read_lock){....}, at: [<00000000fab0cf90>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1562 #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<000000004e879ccc>] spin_lock_bh include/linux/spinlock.h:315 [inline] #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<000000004e879ccc>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1957 stack backtrace: CPU: 0 PID: 2076 Comm: syz-executor2 Not tainted 4.15.0-rc5+ #180 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:1703 fib6_clean_node+0x42e/0x580 net/ipv6/ip6_fib.c:1894 fib6_walk_continue+0x46c/0x8a0 net/ipv6/ip6_fib.c:1817 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:1865 fib6_clean_tree+0x1e6/0x340 net/ipv6/ip6_fib.c:1942 __fib6_clean_all+0x1f4/0x3a0 net/ipv6/ip6_fib.c:1958 fib6_clean_all+0x27/0x30 net/ipv6/ip6_fib.c:1969 rt6_sync_down_dev net/ipv6/route.c:3611 [inline] rt6_disable_ip+0xfd/0x700 net/ipv6/route.c:3616 addrconf_ifdown+0x14b/0x14f0 net/ipv6/addrconf.c:3595 addrconf_notify+0x5f8/0x2310 net/ipv6/addrconf.c:3519 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] rollback_registered_many+0x8b5/0xe20 net/core/dev.c:7335 rollback_registered+0x1be/0x3c0 net/core/dev.c:7377 unregister_netdevice_queue+0x2e3/0x5f0 net/core/dev.c:8392 br_dev_delete+0x138/0x190 net/bridge/br_if.c:320 br_del_bridge+0xac/0xe0 net/bridge/br_if.c:421 br_ioctl_deviceless_stub+0x2ec/0xa00 net/bridge/br_ioctl.c:380 sock_ioctl+0x383/0x440 net/socket.c:1020 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:00007f79621d9c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 00000000203a1ff0 RSI: 00000000000089a1 RDI: 0000000000000013 RBP: 0000000000000577 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f63c8 R13: 00000000ffffffff R14: 00007f79621da6d4 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #180 Not tainted ----------------------------- net/ipv6/ip6_fib.c:1731 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-executor2/2076: #0: (br_ioctl_mutex){+.+.}, at: [<0000000010410650>] sock_ioctl+0x367/0x440 net/socket.c:1018 #1: (rtnl_mutex){+.+.}, at: [<0000000049b00d40>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #2: (rcu_read_lock){....}, at: [<00000000fab0cf90>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1562 #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<000000004e879ccc>] spin_lock_bh include/linux/spinlock.h:315 [inline] #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<000000004e879ccc>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1957 stack backtrace: CPU: 0 PID: 2076 Comm: syz-executor2 Not tainted 4.15.0-rc5+ #180 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:1730 fib6_clean_node+0x42e/0x580 net/ipv6/ip6_fib.c:1894 fib6_walk_continue+0x46c/0x8a0 net/ipv6/ip6_fib.c:1817 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:1865 fib6_clean_tree+0x1e6/0x340 net/ipv6/ip6_fib.c:1942 __fib6_clean_all+0x1f4/0x3a0 net/ipv6/ip6_fib.c:1958 fib6_clean_all+0x27/0x30 net/ipv6/ip6_fib.c:1969 rt6_sync_down_dev net/ipv6/route.c:3611 [inline] rt6_disable_ip+0xfd/0x700 net/ipv6/route.c:3616 addrconf_ifdown+0x14b/0x14f0 net/ipv6/addrconf.c:3595 addrconf_notify+0x5f8/0x2310 net/ipv6/addrconf.c:3519 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] rollback_registered_many+0x8b5/0xe20 net/core/dev.c:7335 rollback_registered+0x1be/0x3c0 net/core/dev.c:7377 unregister_netdevice_queue+0x2e3/0x5f0 net/core/dev.c:8392 br_dev_delete+0x138/0x190 net/bridge/br_if.c:320 br_del_bridge+0xac/0xe0 net/bridge/br_if.c:421 br_ioctl_deviceless_stub+0x2ec/0xa00 net/bridge/br_ioctl.c:380 sock_ioctl+0x383/0x440 net/socket.c:1020 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:00007f79621d9c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 00000000203a1ff0 RSI: 00000000000089a1 RDI: 0000000000000013 RBP: 0000000000000577 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f63c8 R13: 00000000ffffffff R14: 00007f79621da6d4 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #180 Not tainted ----------------------------- net/ipv6/ip6_fib.c:1641 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-executor2/2076: #0: (br_ioctl_mutex){+.+.}, at: [<0000000010410650>] sock_ioctl+0x367/0x440 net/socket.c:1018 #1: (rtnl_mutex){+.+.}, at: [<0000000049b00d40>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #2: (rcu_read_lock){....}, at: [<00000000fab0cf90>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1562 #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<000000004e879ccc>] spin_lock_bh include/linux/spinlock.h:315 [inline] #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<000000004e879ccc>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1957 stack backtrace: CPU: 0 PID: 2076 Comm: syz-executor2 Not tainted 4.15.0-rc5+ #180 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:1640 [inline] fib6_del+0xd18/0x11b0 net/ipv6/ip6_fib.c:1733 fib6_clean_node+0x42e/0x580 net/ipv6/ip6_fib.c:1894 fib6_walk_continue+0x46c/0x8a0 net/ipv6/ip6_fib.c:1817 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:1865 fib6_clean_tree+0x1e6/0x340 net/ipv6/ip6_fib.c:1942 __fib6_clean_all+0x1f4/0x3a0 net/ipv6/ip6_fib.c:1958 fib6_clean_all+0x27/0x30 net/ipv6/ip6_fib.c:1969 rt6_sync_down_dev net/ipv6/route.c:3611 [inline] rt6_disable_ip+0xfd/0x700 net/ipv6/route.c:3616 addrconf_ifdown+0x14b/0x14f0 net/ipv6/addrconf.c:3595 addrconf_notify+0x5f8/0x2310 net/ipv6/addrconf.c:3519 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] rollback_registered_many+0x8b5/0xe20 net/core/dev.c:7335 rollback_registered+0x1be/0x3c0 net/core/dev.c:7377 unregister_netdevice_queue+0x2e3/0x5f0 net/core/dev.c:8392 br_dev_delete+0x138/0x190 net/bridge/br_if.c:320 br_del_bridge+0xac/0xe0 net/bridge/br_if.c:421 br_ioctl_deviceless_stub+0x2ec/0xa00 net/bridge/br_ioctl.c:380 sock_ioctl+0x383/0x440 net/socket.c:1020 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:00007f79621d9c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 00000000203a1ff0 RSI: 00000000000089a1 RDI: 0000000000000013 RBP: 0000000000000577 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f63c8 R13: 00000000ffffffff R14: 00007f79621da6d4 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #180 Not tainted ----------------------------- net/ipv6/ip6_fib.c:1678 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 5 locks held by syz-executor2/2076: #0: (br_ioctl_mutex){+.+.}, at: [<0000000010410650>] sock_ioctl+0x367/0x440 net/socket.c:1018 #1: (rtnl_mutex){+.+.}, at: [<0000000049b00d40>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #2: (rcu_read_lock){....}, at: [<00000000fab0cf90>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1562 #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<000000004e879ccc>] spin_lock_bh include/linux/spinlock.h:315 [inline] #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<000000004e879ccc>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1957 #4: (&net->ipv6.fib6_walker_lock){++--}, at: [<0000000050b6e819>] fib6_del_route net/ipv6/ip6_fib.c:1673 [inline] #4: (&net->ipv6.fib6_walker_lock){++--}, at: [<0000000050b6e819>] fib6_del+0x935/0x11b0 net/ipv6/ip6_fib.c:1733 stack backtrace: CPU: 0 PID: 2076 Comm: syz-executor2 Not tainted 4.15.0-rc5+ #180 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:1677 [inline] fib6_del+0xeb3/0x11b0 net/ipv6/ip6_fib.c:1733 fib6_clean_node+0x42e/0x580 net/ipv6/ip6_fib.c:1894 fib6_walk_continue+0x46c/0x8a0 net/ipv6/ip6_fib.c:1817 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:1865 fib6_clean_tree+0x1e6/0x340 net/ipv6/ip6_fib.c:1942 __fib6_clean_all+0x1f4/0x3a0 net/ipv6/ip6_fib.c:1958 fib6_clean_all+0x27/0x30 net/ipv6/ip6_fib.c:1969 rt6_sync_down_dev net/ipv6/route.c:3611 [inline] rt6_disable_ip+0xfd/0x700 net/ipv6/route.c:3616 addrconf_ifdown+0x14b/0x14f0 net/ipv6/addrconf.c:3595 addrconf_notify+0x5f8/0x2310 net/ipv6/addrconf.c:3519 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] rollback_registered_many+0x8b5/0xe20 net/core/dev.c:7335 rollback_registered+0x1be/0x3c0 net/core/dev.c:7377 unregister_netdevice_queue+0x2e3/0x5f0 net/core/dev.c:8392 br_dev_delete+0x138/0x190 net/bridge/br_if.c:320 br_del_bridge+0xac/0xe0 net/bridge/br_if.c:421 br_ioctl_deviceless_stub+0x2ec/0xa00 net/bridge/br_ioctl.c:380 sock_ioctl+0x383/0x440 net/socket.c:1020 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:00007f79621d9c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 00000000203a1ff0 RSI: 00000000000089a1 RDI: 0000000000000013 RBP: 0000000000000577 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f63c8 R13: 00000000ffffffff R14: 00007f79621da6d4 R15: 0000000000000000 IPVS: Scheduler module ip_vs_ not found nla_parse: 4 callbacks suppressed netlink: 11 bytes leftover after parsing attributes in process `syz-executor5'. IPVS: Scheduler module ip_vs_ not found netlink: 11 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 104 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 104 bytes leftover after parsing attributes in process `syz-executor3'. SELinux: unrecognized netlink message: protocol=9 nlmsg_type=31 sclass=netlink_audit_socket pig=2210 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=31 sclass=netlink_audit_socket pig=2210 comm=syz-executor5 netlink: 8 bytes leftover after parsing attributes in process `syz-executor1'. do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app do_dccp_getsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app sctp: [Deprecated]: syz-executor7 (pid 2392) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor7 (pid 2397) Use of int in maxseg socket option. Use struct sctp_assoc_value instead SELinux: unrecognized netlink message: protocol=0 nlmsg_type=260 sclass=netlink_route_socket pig=2438 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=260 sclass=netlink_route_socket pig=2455 comm=syz-executor3 netlink: 40 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor7'. sctp: [Deprecated]: syz-executor1 (pid 2817) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor1 (pid 2818) Use of int in maxseg socket option. Use struct sctp_assoc_value instead unregister_netdevice: waiting for lo to become free. Usage count = 8 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=263 sclass=netlink_xfrm_socket pig=3221 comm=syz-executor4 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=263 sclass=netlink_xfrm_socket pig=3238 comm=syz-executor4 dccp_v6_rcv: dropped packet with invalid checksum dccp_v6_rcv: dropped packet with invalid checksum nla_parse: 7 callbacks suppressed netlink: 13 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 6 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 6 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 14 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 14 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'. openvswitch: netlink: Either Ethernet header or EtherType is required. mip6: mip6_rthdr_init_state: spi is not 0: 3791912960 mip6: mip6_rthdr_init_state: spi is not 0: 3791912960