audit: type=1400 audit(1578257929.121:36): avc: denied { map } for pid=8087 comm="syz-executor516" path="/root/syz-executor516459032" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 ===================================== WARNING: bad unlock balance detected! 4.19.93-syzkaller #0 Not tainted ------------------------------------- syz-executor516/8090 is trying to release lock (sk_lock-AF_INET6) 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-executor516/8090: #0: 000000000ddd2905 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000000ddd2905 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4765 #1: 000000001c1d287d (slock-AF_INET6){+...}, at: spin_lock_bh include/linux/spinlock.h:334 [inline] #1: 000000001c1d287d (slock-AF_INET6){+...}, at: release_sock+0x20/0x1c0 net/core/sock.c:2853 stack backtrace: CPU: 0 PID: 8090 Comm: syz-executor516 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: 0033:0x446c39 Code: e8 5c b3 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb2a66ebdb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446c39 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 00000000006dbc30 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 00000000006dbc3c R13: 00007ffe46b1e6ff R14: 00007fb2a66ec9c0 R15: 20c49ba5e353f7cf