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netlink: 8 bytes leftover after parsing attributes in process `syz-executor057'. ------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 1 PID: 8390 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31 Modules linked in: CPU: 0 PID: 8390 Comm: syz-executor057 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 lib/refcount.c:31 Code: 1d 6a 5a e8 09 31 ff 89 de e8 8d 1a ab fd 84 db 75 e0 e8 d4 13 ab fd 48 c7 c7 a0 e1 c1 89 c6 05 4a 5a e8 09 01 e8 2e 36 fb 04 <0f> 0b eb c4 e8 b8 13 ab fd 0f b6 1d 39 5a e8 09 31 ff 89 de e8 58 RSP: 0018:ffffc9000160efe8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801fa33880 RSI: ffffffff815c51f5 RDI: fffff520002c1def RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815bdf8e R11: 0000000000000000 R12: ffff888018290568 R13: ffff888147ac7800 R14: 00000000ffffffff R15: ffffffff8d659b80 FS: 0000000001244300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558abbb67188 CR3: 0000000012a88000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __refcount_dec include/linux/refcount.h:344 [inline] refcount_dec include/linux/refcount.h:359 [inline] dev_put include/linux/netdevice.h:4135 [inline] ip6_tnl_dev_uninit+0x370/0x3d0 net/ipv6/ip6_tunnel.c:387 register_netdevice+0xadf/0x1500 net/core/dev.c:10308 ip6_tnl_create2+0x1b5/0x400 net/ipv6/ip6_tunnel.c:263 ip6_tnl_newlink+0x312/0x580 net/ipv6/ip6_tunnel.c:2052 __rtnl_newlink+0x1062/0x1710 net/core/rtnetlink.c:3443 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3491 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5553 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x43fd19 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe21e4b8a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000011fde RCX: 000000000043fd19 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffe21e4ba48 R09: 00007ffe21e4ba48 R10: 00007ffe21e4ba48 R11: 0000000000000246 R12: 00007ffe21e4b8bc R13: 431bde82d7b634db R14: 00000000004ae018 R15: 0000000000400488
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/03/28 17:02 | net-next-old | a1281601f88e | a8529b82 | .config | console log | report | syz | C | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | ||
2021/03/29 01:40 | net-next-old | a1281601f88e | a8529b82 | .config | console log | report | syz | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/28 12:40 | net-next-old | a1281601f88e | a8529b82 | .config | console log | report | syz | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/31 22:31 | net-next-old | 37f368d8d09d | 6a81331a | .config | console log | report | info | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/31 10:36 | net-next-old | 37f368d8d09d | 6a81331a | .config | console log | report | info | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/31 09:10 | net-next-old | 37f368d8d09d | 6a81331a | .config | console log | report | info | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/30 13:03 | net-next-old | 37f368d8d09d | 6a81331a | .config | console log | report | info | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/30 00:06 | net-next-old | 37f368d8d09d | 6a81331a | .config | console log | report | info | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/29 21:59 | net-next-old | 37f368d8d09d | 6a81331a | .config | console log | report | info | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/29 03:23 | net-next-old | a1281601f88e | a8529b82 | .config | console log | report | info | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/28 16:31 | net-next-old | a1281601f88e | a8529b82 | .config | console log | report | info | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/28 12:22 | net-next-old | a1281601f88e | a8529b82 | .config | console log | report | info | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/27 07:34 | net-next-old | a1281601f88e | a8529b82 | .config | console log | report | info | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/27 07:15 | net-next-old | a1281601f88e | a8529b82 | .config | console log | report | info | ci-upstream-net-kasan-gce | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/04/01 10:04 | linux-next | 931294922e65 | 6a81331a | .config | console log | report | info | ci-upstream-linux-next-kasan-gce-root | WARNING: refcount bug in ip6_tnl_dev_uninit | |||
2021/03/30 10:33 | linux-next | 931294922e65 | 6a81331a | .config | console log | report | info | ci-upstream-linux-next-kasan-gce-root | WARNING: refcount bug in ip6_tnl_dev_uninit |