------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff88810b314050 object type: timer_list hint: hash_netiface4_gc+0x0/0x180 net/netfilter/ipset/ip_set_hash_gen.h:445 WARNING: CPU: 1 PID: 2569 at lib/debugobjects.c:517 debug_print_object lib/debugobjects.c:514 [inline] WARNING: CPU: 1 PID: 2569 at lib/debugobjects.c:517 __debug_check_no_obj_freed lib/debugobjects.c:989 [inline] WARNING: CPU: 1 PID: 2569 at lib/debugobjects.c:517 debug_check_no_obj_freed+0x1c9/0x280 lib/debugobjects.c:1019 Modules linked in: CPU: 1 PID: 2569 Comm: syz-executor.0 Not tainted 6.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:debug_print_object lib/debugobjects.c:514 [inline] RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:989 [inline] RIP: 0010:debug_check_no_obj_freed+0x1c9/0x280 lib/debugobjects.c:1019 Code: 4c 8b 4d 00 48 c7 c7 d1 7b 0c 83 48 c7 c6 14 a8 07 83 48 c7 c2 85 ab 10 83 44 89 e9 49 89 d8 50 e8 4c be 8c ff 48 83 c4 08 90 <0f> 0b 90 90 ff 05 2d cc 09 02 4c 8b 5d 30 4d 85 db 74 17 48 89 df RSP: 0018:ffffc90001d43448 EFLAGS: 00010286 RAX: 96dd1f2ea37b6100 RBX: ffff88810b314050 RCX: 0000000000000002 RDX: 0000000000000000 RSI: c0000000ffffdfff RDI: 00000000ffffffff RBP: ffffffff82a10660 R08: 0000000000000000 R09: ffffffff83527750 R10: 00000000ffffffff R11: 00000000ffffdfff R12: ffff88810b314000 R13: 0000000000000000 R14: ffff88810b314800 R15: dead000000000100 FS: 00007f11fa8c36c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556726da8 CR3: 000000010e35a000 CR4: 0000000000350ef0 Call Trace: slab_free_hook mm/slub.c:2093 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x10e/0x350 mm/slub.c:4409 hash_netiface4_destroy+0x88/0xb0 net/netfilter/ipset/ip_set_hash_gen.h:460 ip_set_create+0x661/0x740 net/netfilter/ipset/ip_set_core.c:1157 nfnetlink_rcv_msg+0x3c9/0x4b0 net/netfilter/nfnetlink.c:302 netlink_rcv_skb+0xe2/0x110 net/netlink/af_netlink.c:2543 nfnetlink_rcv+0x180/0xa50 net/netfilter/nfnetlink.c:659 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x1e0/0x2d0 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x391/0x440 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x90/0xb0 net/socket.c:745 ____sys_sendmsg+0x1a7/0x200 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2c7/0x310 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xe8/0x200 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f11f9a7dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f11fa8c30c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f11f9babf80 RCX: 00007f11f9a7dda9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f11f9aca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f11f9babf80 R15: 00007ffdd2ddd9f8