device syz4 left promiscuous mode ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #178 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 3 locks held by syz-executor4/25461: #0: (rtnl_mutex){+.+.}, at: [<00000000b3c73ac5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (rcu_read_lock){....}, at: [<0000000022751a60>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1562 #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d912b5d4>] spin_lock_bh include/linux/spinlock.h:315 [inline] #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d912b5d4>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1957 stack backtrace: CPU: 0 PID: 25461 Comm: syz-executor4 Not tainted 4.15.0-rc5+ #178 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] __dev_notify_flags+0x262/0x430 net/core/dev.c:6923 dev_change_flags+0xf5/0x140 net/core/dev.c:6957 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:00007ff89dbcfc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 0000000020221000 RSI: 0000000000008914 RDI: 0000000000000013 RBP: 0000000000000567 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f6248 R13: 00000000ffffffff R14: 00007ff89dbd06d4 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #178 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 3 locks held by syz-executor4/25461: #0: (rtnl_mutex){+.+.}, at: [<00000000b3c73ac5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (rcu_read_lock){....}, at: [<0000000022751a60>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1562 #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d912b5d4>] spin_lock_bh include/linux/spinlock.h:315 [inline] #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d912b5d4>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1957 stack backtrace: CPU: 0 PID: 25461 Comm: syz-executor4 Not tainted 4.15.0-rc5+ #178 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] __dev_notify_flags+0x262/0x430 net/core/dev.c:6923 dev_change_flags+0xf5/0x140 net/core/dev.c:6957 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:00007ff89dbcfc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 0000000020221000 RSI: 0000000000008914 RDI: 0000000000000013 RBP: 0000000000000567 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f6248 R13: 00000000ffffffff R14: 00007ff89dbd06d4 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #178 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 3 locks held by syz-executor4/25461: #0: (rtnl_mutex){+.+.}, at: [<00000000b3c73ac5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (rcu_read_lock){....}, at: [<0000000022751a60>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1562 #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d912b5d4>] spin_lock_bh include/linux/spinlock.h:315 [inline] #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d912b5d4>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1957 stack backtrace: CPU: 0 PID: 25461 Comm: syz-executor4 Not tainted 4.15.0-rc5+ #178 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] __dev_notify_flags+0x262/0x430 net/core/dev.c:6923 dev_change_flags+0xf5/0x140 net/core/dev.c:6957 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:00007ff89dbcfc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 0000000020221000 RSI: 0000000000008914 RDI: 0000000000000013 RBP: 0000000000000567 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f6248 R13: 00000000ffffffff R14: 00007ff89dbd06d4 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #178 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 4 locks held by syz-executor4/25461: #0: (rtnl_mutex){+.+.}, at: [<00000000b3c73ac5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (rcu_read_lock){....}, at: [<0000000022751a60>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1562 #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d912b5d4>] spin_lock_bh include/linux/spinlock.h:315 [inline] #2: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000d912b5d4>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1957 #3: (&net->ipv6.fib6_walker_lock){++--}, at: [<000000002a17eb6e>] fib6_del_route net/ipv6/ip6_fib.c:1673 [inline] #3: (&net->ipv6.fib6_walker_lock){++--}, at: [<000000002a17eb6e>] fib6_del+0x935/0x11b0 net/ipv6/ip6_fib.c:1733 stack backtrace: CPU: 0 PID: 25461 Comm: syz-executor4 Not tainted 4.15.0-rc5+ #178 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] __dev_notify_flags+0x262/0x430 net/core/dev.c:6923 dev_change_flags+0xf5/0x140 net/core/dev.c:6957 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:00007ff89dbcfc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 0000000020221000 RSI: 0000000000008914 RDI: 0000000000000013 RBP: 0000000000000567 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f6248 R13: 00000000ffffffff R14: 00007ff89dbd06d4 R15: 0000000000000000 nla_parse: 17 callbacks suppressed netlink: 17 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 'syz-executor2': attribute type 1 has an invalid length. netlink: 'syz-executor2': attribute type 1 has an invalid length. netlink: 2 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor1'. device lo entered promiscuous mode IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready netlink: 1 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 104 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 104 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 'syz-executor5': attribute type 1 has an invalid length. netlink: 'syz-executor5': attribute type 1 has an invalid length. netlink: 11 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor3'. SELinux: unrecognized netlink message: protocol=4 nlmsg_type=34 sclass=netlink_tcpdiag_socket pig=26689 comm=syz-executor2 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=34 sclass=netlink_tcpdiag_socket pig=26729 comm=syz-executor2 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=26765 comm=syz-executor2 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=26777 comm=syz-executor2 netlink: 'syz-executor4': attribute type 1 has an invalid length. netlink: 'syz-executor4': attribute type 1 has an invalid length. mip6: mip6_destopt_init_state: state's mode is not 2: 0 nla_parse: 1 callbacks suppressed netlink: 5 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor6'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=64787 sclass=netlink_route_socket pig=27121 comm=syz-executor0 netlink: 12 bytes leftover after parsing attributes in process `syz-executor6'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=64787 sclass=netlink_route_socket pig=27113 comm=syz-executor0 netlink: 1 bytes leftover after parsing attributes in process `syz-executor4'. sctp: [Deprecated]: syz-executor1 (pid 27249) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor1 (pid 27264) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead IPVS: length: 65315 != 8 IPVS: length: 65315 != 8 netlink: 8 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 14 bytes leftover after parsing attributes in process `syz-executor2'. TCP: request_sock_TCPv6: Possible SYN flooding on port 20026. Sending cookies. Check SNMP counters. netlink: 17 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor7'.