device gre0 entered promiscuous mode device lo left promiscuous mode ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #177 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 4 locks held by syz-executor6/32066: #0: (rtnl_mutex){+.+.}, at: [<000000002731b969>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000019700814>] spin_trylock_bh include/linux/spinlock.h:370 [inline] #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000019700814>] fib6_run_gc+0x2b7/0x3c0 net/ipv6/ip6_fib.c:2008 #2: (rcu_read_lock){....}, at: [<0000000028e93a8f>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000ef9382c4>] spin_lock_bh include/linux/spinlock.h:315 [inline] #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000ef9382c4>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 stack backtrace: CPU: 0 PID: 32066 Comm: syz-executor6 Not tainted 4.15.0-rc5+ #177 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 net/ipv6/ip6_fib.c:1960 [inline] fib6_run_gc+0x16b/0x3c0 net/ipv6/ip6_fib.c:2016 ndisc_netdev_event+0x3c2/0x4a0 net/ipv6/ndisc.c:1776 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:00007f9e797a1c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9e797a2700 RCX: 0000000000452ac9 RDX: 00000000208a3fe0 RSI: 0000000000008914 RDI: 0000000000000014 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 R13: 0000000000a2f7ef R14: 00007f9e797a29c0 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #177 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 4 locks held by syz-executor6/32066: #0: (rtnl_mutex){+.+.}, at: [<000000002731b969>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000019700814>] spin_trylock_bh include/linux/spinlock.h:370 [inline] #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000019700814>] fib6_run_gc+0x2b7/0x3c0 net/ipv6/ip6_fib.c:2008 #2: (rcu_read_lock){....}, at: [<0000000028e93a8f>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000ef9382c4>] spin_lock_bh include/linux/spinlock.h:315 [inline] #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000ef9382c4>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 stack backtrace: CPU: 0 PID: 32066 Comm: syz-executor6 Not tainted 4.15.0-rc5+ #177 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 net/ipv6/ip6_fib.c:1960 [inline] fib6_run_gc+0x16b/0x3c0 net/ipv6/ip6_fib.c:2016 ndisc_netdev_event+0x3c2/0x4a0 net/ipv6/ndisc.c:1776 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:00007f9e797a1c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9e797a2700 RCX: 0000000000452ac9 RDX: 00000000208a3fe0 RSI: 0000000000008914 RDI: 0000000000000014 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 R13: 0000000000a2f7ef R14: 00007f9e797a29c0 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #177 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 4 locks held by syz-executor6/32066: #0: (rtnl_mutex){+.+.}, at: [<000000002731b969>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000019700814>] spin_trylock_bh include/linux/spinlock.h:370 [inline] #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000019700814>] fib6_run_gc+0x2b7/0x3c0 net/ipv6/ip6_fib.c:2008 #2: (rcu_read_lock){....}, at: [<0000000028e93a8f>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000ef9382c4>] spin_lock_bh include/linux/spinlock.h:315 [inline] #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000ef9382c4>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 stack backtrace: CPU: 0 PID: 32066 Comm: syz-executor6 Not tainted 4.15.0-rc5+ #177 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 net/ipv6/ip6_fib.c:1960 [inline] fib6_run_gc+0x16b/0x3c0 net/ipv6/ip6_fib.c:2016 ndisc_netdev_event+0x3c2/0x4a0 net/ipv6/ndisc.c:1776 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:00007f9e797a1c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9e797a2700 RCX: 0000000000452ac9 RDX: 00000000208a3fe0 RSI: 0000000000008914 RDI: 0000000000000014 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 R13: 0000000000a2f7ef R14: 00007f9e797a29c0 R15: 0000000000000000 ============================= WARNING: suspicious RCU usage 4.15.0-rc5+ #177 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 5 locks held by syz-executor6/32066: #0: (rtnl_mutex){+.+.}, at: [<000000002731b969>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000019700814>] spin_trylock_bh include/linux/spinlock.h:370 [inline] #1: (&(&net->ipv6.fib6_gc_lock)->rlock){+.-.}, at: [<0000000019700814>] fib6_run_gc+0x2b7/0x3c0 net/ipv6/ip6_fib.c:2008 #2: (rcu_read_lock){....}, at: [<0000000028e93a8f>] __fib6_clean_all+0x0/0x3a0 net/ipv6/ip6_fib.c:1560 #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000ef9382c4>] spin_lock_bh include/linux/spinlock.h:315 [inline] #3: (&(&tb->tb6_lock)->rlock){+.-.}, at: [<00000000ef9382c4>] __fib6_clean_all+0x1d0/0x3a0 net/ipv6/ip6_fib.c:1948 #4: (&net->ipv6.fib6_walker_lock){++--}, at: [<00000000f9fef1d8>] fib6_del_route net/ipv6/ip6_fib.c:1671 [inline] #4: (&net->ipv6.fib6_walker_lock){++--}, at: [<00000000f9fef1d8>] fib6_del+0x935/0x11b0 net/ipv6/ip6_fib.c:1731 stack backtrace: CPU: 0 PID: 32066 Comm: syz-executor6 Not tainted 4.15.0-rc5+ #177 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 net/ipv6/ip6_fib.c:1960 [inline] fib6_run_gc+0x16b/0x3c0 net/ipv6/ip6_fib.c:2016 ndisc_netdev_event+0x3c2/0x4a0 net/ipv6/ndisc.c:1776 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:00007f9e797a1c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9e797a2700 RCX: 0000000000452ac9 RDX: 00000000208a3fe0 RSI: 0000000000008914 RDI: 0000000000000014 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000000 R13: 0000000000a2f7ef R14: 00007f9e797a29c0 R15: 0000000000000000 device lo entered promiscuous mode device lo left promiscuous mode nla_parse: 8 callbacks suppressed netlink: 12 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 53 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 53 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor4'. sctp: [Deprecated]: syz-executor1 (pid 32298) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor1 (pid 32298) Use of int in maxseg socket option. Use struct sctp_assoc_value instead netlink: 'syz-executor2': attribute type 1 has an invalid length. netlink: 'syz-executor2': attribute type 1 has an invalid length. netlink: 11 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor6'. dccp_v6_rcv: dropped packet with invalid checksum netlink: 7 bytes leftover after parsing attributes in process `syz-executor6'. dccp_v6_rcv: dropped packet with invalid checksum sctp: [Deprecated]: syz-executor6 (pid 32473) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor6 (pid 32481) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=32507 comm=syz-executor2 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=32492 comm=syz-executor2 dccp_invalid_packet: invalid packet type SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=32746 comm=syz-executor2 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=304 comm=syz-executor2 tc_ctl_action: received NO action attribs tc_ctl_action: received NO action attribs netlink: 'syz-executor3': attribute type 4 has an invalid length. netlink: 'syz-executor3': attribute type 4 has an invalid length. sctp: [Deprecated]: syz-executor4 (pid 714) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor4 (pid 726) Use of int in maxseg socket option. Use struct sctp_assoc_value instead nla_parse: 9 callbacks suppressed netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. sctp: [Deprecated]: syz-executor3 (pid 1249) Use of int in max_burst socket option. Use struct sctp_assoc_value instead netlink: 137 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 137 bytes leftover after parsing attributes in process `syz-executor6'. openvswitch: netlink: Message has 10 unknown bytes. netlink: 14 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 14 bytes leftover after parsing attributes in process `syz-executor0'. openvswitch: netlink: Message has 10 unknown bytes. IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready netlink: 40 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 'syz-executor6': attribute type 19 has an invalid length. do_dccp_setsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app netlink: 'syz-executor6': attribute type 19 has an invalid length. do_dccp_setsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65473 sclass=netlink_xfrm_socket pig=1778 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65473 sclass=netlink_xfrm_socket pig=1797 comm=syz-executor1 device lo left promiscuous mode