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===================================== WARNING: bad unlock balance detected! 5.5.0-rc4-syzkaller #0 Not tainted ------------------------------------- syz-executor.1/31393 is trying to release lock (sk_lock-AF_INET) at: [<ffffffff8620419a>] release_sock+0xba/0x1c0 net/core/sock.c:2959 but there are no more locks to release! other info that might help us debug this: 2 locks held by syz-executor.1/31393: #0: ffffffff8a4d8340 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:72 [inline] #0: ffffffff8a4d8340 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x405/0xaf0 net/core/rtnetlink.c:5426 #1: ffff888095b671a0 (slock-AF_INET){+.-.}, at: spin_lock_bh include/linux/spinlock.h:343 [inline] #1: ffff888095b671a0 (slock-AF_INET){+.-.}, at: release_sock+0x20/0x1c0 net/core/sock.c:2951 stack backtrace: CPU: 0 PID: 31393 Comm: syz-executor.1 Not tainted 5.5.0-rc4-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:4008 [inline] print_unlock_imbalance_bug.cold+0x114/0x123 kernel/locking/lockdep.c:3984 __lock_release kernel/locking/lockdep.c:4242 [inline] lock_release+0x5f2/0x960 kernel/locking/lockdep.c:4503 sock_release_ownership include/net/sock.h:1496 [inline] tcp_release_cb+0x37f/0x3d0 net/ipv4/tcp_output.c:885 release_sock+0xba/0x1c0 net/core/sock.c:2959 gtp_encap_enable_socket+0x146/0x400 drivers/net/gtp.c:830 gtp_encap_enable drivers/net/gtp.c:852 [inline] gtp_newlink+0x9fc/0xc60 drivers/net/gtp.c:666 __rtnl_newlink+0x109d/0x1790 net/core/rtnetlink.c:3310 rtnl_newlink+0x69/0xa0 net/core/rtnetlink.c:3368 rtnetlink_rcv_msg+0x45e/0xaf0 net/core/rtnetlink.c:5429 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5447 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x58c/0x7d0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:643 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:663 ____sys_sendmsg+0x753/0x880 net/socket.c:2342 ___sys_sendmsg+0x100/0x170 net/socket.c:2396 __sys_sendmsg+0x105/0x1d0 net/socket.c:2429 __do_sys_sendmsg net/socket.c:2438 [inline] __se_sys_sendmsg net/socket.c:2436 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2436 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 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:00007fd2b4f00c78 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: 00007fd2b4f016d4 R13: 00000000004ca9a0 R14: 00000000004e3d80 R15: 00000000ffffffff
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
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2020/01/08 06:12 | net-next-old | 1ece2fbe9b42 | 6738e0b3 | .config | console log | report | ci-upstream-net-kasan-gce |