------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 0 PID: 5231 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 Modules linked in: CPU: 0 UID: 0 PID: 5231 Comm: syz-executor105 Not tainted 6.11.0-rc6-syzkaller-01235-ga9b1fab3b69f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31 Code: b2 00 00 00 e8 e7 09 e1 fc 5b 5d c3 cc cc cc cc e8 db 09 e1 fc c6 05 56 d4 4f 0b 01 90 48 c7 c7 c0 3b 60 8c e8 f7 2d a3 fc 90 <0f> 0b 90 90 eb d9 e8 bb 09 e1 fc c6 05 33 d4 4f 0b 01 90 48 c7 c7 RSP: 0018:ffffc90003427048 EFLAGS: 00010246 RAX: 7deb612ec192ea00 RBX: ffff888079c22664 RCX: ffff88802e3bbc00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000004 R08: ffffffff8155b372 R09: 1ffff1101710519a R10: dffffc0000000000 R11: ffffed101710519b R12: ffff888079c22620 R13: 0000000000000000 R14: ffff888079c22664 R15: dffffc0000000000 FS: 00005555940fc380(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560629513798 CR3: 000000002f5e6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __refcount_dec include/linux/refcount.h:336 [inline] refcount_dec include/linux/refcount.h:351 [inline] ref_tracker_free+0x6af/0x7e0 lib/ref_tracker.c:236 netdev_tracker_free include/linux/netdevice.h:4057 [inline] netdev_put include/linux/netdevice.h:4074 [inline] ethnl_parse_header_dev_put net/ethtool/netlink.h:271 [inline] ethnl_phy_done+0x6f/0x100 net/ethtool/phy.c:238 genl_done+0x136/0x210 net/netlink/genetlink.c:1043 netlink_dump+0x9b2/0xd80 net/netlink/af_netlink.c:2370 __netlink_dump_start+0x5a2/0x790 net/netlink/af_netlink.c:2440 genl_family_rcv_msg_dumpit net/netlink/genetlink.c:1076 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1192 [inline] genl_rcv_msg+0x88c/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0a48233219 Code: 48 83 c4 28 c3 e8 e7 18 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe16cdf818 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ffe16cdf9e8 RCX: 00007f0a48233219 RDX: 0000000000000000 RSI: 0000000020001900 RDI: 0000000000000003 RBP: 00007f0a482a5610 R08: 00007ffe16cdf9e8 R09: 00007ffe16cdf9e8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffe16cdf9d8 R14: 0000000000000001 R15: 0000000000000001