IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready ===================================== WARNING: bad unlock balance detected! 4.19.93-syzkaller #0 Not tainted ------------------------------------- syz-executor.1/10219 is trying to release lock (sk_lock-AF_INET) at: [] gtp_encap_enable_socket+0x13f/0x350 drivers/net/gtp.c:835 but there are no more locks to release! other info that might help us debug this: 2 locks held by syz-executor.1/10219: #0: 0000000018422f51 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 0000000018422f51 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4765 #1: 000000008ac20a67 (slock-AF_INET){+.-.}, at: spin_lock_bh include/linux/spinlock.h:334 [inline] #1: 000000008ac20a67 (slock-AF_INET){+.-.}, at: release_sock+0x20/0x1c0 net/core/sock.c:2853 stack backtrace: CPU: 1 PID: 10219 Comm: syz-executor.1 Not tainted 4.19.93-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 print_unlock_imbalance_bug kernel/locking/lockdep.c:3464 [inline] print_unlock_imbalance_bug.cold+0x114/0x123 kernel/locking/lockdep.c:3441 __lock_release kernel/locking/lockdep.c:3674 [inline] lock_release+0x6cd/0xa30 kernel/locking/lockdep.c:3922 sock_release_ownership include/net/sock.h:1471 [inline] release_sock+0x181/0x1c0 net/core/sock.c:2863 gtp_encap_enable_socket+0x13f/0x350 drivers/net/gtp.c:835 gtp_encap_enable drivers/net/gtp.c:857 [inline] gtp_newlink+0x9b7/0xc10 drivers/net/gtp.c:670 rtnl_newlink+0x1042/0x1600 net/core/rtnetlink.c:3132 rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:4768 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4786 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45af49 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb856f44c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49 RDX: 0000000020000000 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb856f456d4 R13: 00000000004ca9a0 R14: 00000000004e3d80 R15: 00000000ffffffff kobject: 'loop0' (000000007b14661c): kobject_uevent_env kobject: 'loop0' (000000007b14661c): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000f7fe3a95): kobject_uevent_env kobject: 'loop1' (00000000f7fe3a95): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000f33b539e): kobject_uevent_env kobject: 'loop5' (00000000f33b539e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (00000000f33b539e): kobject_uevent_env kobject: 'loop5' (00000000f33b539e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000f63fe95a): kobject_uevent_env kobject: 'loop2' (00000000f63fe95a): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000007ae9ad23): kobject_uevent_env kobject: 'loop4' (000000007ae9ad23): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000f33b539e): kobject_uevent_env kobject: 'gtp2' (0000000022dc3fab): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop5' (00000000f33b539e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (0000000083d29e04): kobject_uevent_env kobject: 'loop3' (0000000083d29e04): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'gtp2' (0000000022dc3fab): kobject_uevent_env kobject: 'loop0' (000000007b14661c): kobject_uevent_env kobject: 'loop0' (000000007b14661c): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'gtp2' (0000000022dc3fab): fill_kobj_path: path = '/devices/virtual/net/gtp2' kobject: 'loop2' (00000000f63fe95a): kobject_uevent_env kobject: 'queues' (0000000016302a1e): kobject_add_internal: parent: 'gtp2', set: '' kobject: 'loop2' (00000000f63fe95a): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'queues' (0000000016302a1e): kobject_uevent_env kobject: 'loop3' (0000000083d29e04): kobject_uevent_env kobject: 'queues' (0000000016302a1e): kobject_uevent_env: filter function caused the event to drop! kobject: 'loop3' (0000000083d29e04): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'rx-0' (000000003c3ce0c2): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop4' (000000007ae9ad23): kobject_uevent_env kobject: 'rx-0' (000000003c3ce0c2): kobject_uevent_env kobject: 'loop4' (000000007ae9ad23): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rx-0' (000000003c3ce0c2): fill_kobj_path: path = '/devices/virtual/net/gtp2/queues/rx-0' kobject: 'loop1' (00000000f7fe3a95): kobject_uevent_env kobject: 'tx-0' (00000000013e6903): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop1' (00000000f7fe3a95): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'tx-0' (00000000013e6903): kobject_uevent_env kobject: 'loop0' (000000007b14661c): kobject_uevent_env kobject: 'tx-0' (00000000013e6903): fill_kobj_path: path = '/devices/virtual/net/gtp2/queues/tx-0' kobject: 'loop0' (000000007b14661c): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000f63fe95a): kobject_uevent_env kobject: 'gtp0' (00000000b1f067b3): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop2' (00000000f63fe95a): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'gtp0' (00000000b1f067b3): kobject_uevent_env kobject: 'loop3' (0000000083d29e04): kobject_uevent_env kobject: 'gtp0' (00000000b1f067b3): fill_kobj_path: path = '/devices/virtual/net/gtp0' kobject: 'loop3' (0000000083d29e04): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'queues' (000000009daf34c3): kobject_add_internal: parent: 'gtp0', set: '' kobject: 'loop4' (000000007ae9ad23): kobject_uevent_env kobject: 'queues' (000000009daf34c3): kobject_uevent_env kobject: 'loop4' (000000007ae9ad23): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'queues' (000000009daf34c3): kobject_uevent_env: filter function caused the event to drop! kobject: 'loop0' (000000007b14661c): kobject_uevent_env kobject: 'loop0' (000000007b14661c): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000007ae9ad23): kobject_uevent_env kobject: 'rx-0' (00000000c3f6159c): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop4' (000000007ae9ad23): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rx-0' (00000000c3f6159c): kobject_uevent_env kobject: 'loop2' (00000000f63fe95a): kobject_uevent_env kobject: 'rx-0' (00000000c3f6159c): fill_kobj_path: path = '/devices/virtual/net/gtp0/queues/rx-0' kobject: 'loop2' (00000000f63fe95a): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'tx-0' (000000005e68f0d6): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop3' (0000000083d29e04): kobject_uevent_env kobject: 'tx-0' (000000005e68f0d6): kobject_uevent_env kobject: 'loop3' (0000000083d29e04): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'tx-0' (000000005e68f0d6): fill_kobj_path: path = '/devices/virtual/net/gtp0/queues/tx-0' kobject: 'gtp2' (0000000037c6a9da): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop1' (00000000f7fe3a95): kobject_uevent_env kobject: 'gtp2' (0000000037c6a9da): kobject_uevent_env kobject: 'gtp2' (0000000037c6a9da): fill_kobj_path: path = '/devices/virtual/net/gtp2' kobject: 'queues' (00000000aa5ca30c): kobject_add_internal: parent: 'gtp2', set: '' kobject: 'queues' (00000000aa5ca30c): kobject_uevent_env kobject: 'queues' (00000000aa5ca30c): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (000000001f68e5d2): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'loop1' (00000000f7fe3a95): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'rx-0' (000000001f68e5d2): kobject_uevent_env kobject: 'rx-0' (000000001f68e5d2): fill_kobj_path: path = '/devices/virtual/net/gtp2/queues/rx-0' kobject: 'tx-0' (000000009f868488): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (000000009f868488): kobject_uevent_env kobject: 'tx-0' (000000009f868488): fill_kobj_path: path = '/devices/virtual/net/gtp2/queues/tx-0' kobject: 'loop3' (0000000083d29e04): kobject_uevent_env kobject: 'loop3' (0000000083d29e04): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000007ae9ad23): kobject_uevent_env kobject: 'loop4' (000000007ae9ad23): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000f63fe95a): kobject_uevent_env kobject: 'loop2' (00000000f63fe95a): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000f33b539e): kobject_uevent_env kobject: 'loop5' (00000000f33b