------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff888051210d68 object type: work_struct hint: kcm_tx_work+0x0/0x180 net/kcm/kcmsock.c:-1 WARNING: CPU: 1 PID: 7046 at lib/debugobjects.c:615 debug_print_object lib/debugobjects.c:612 [inline] WARNING: CPU: 1 PID: 7046 at lib/debugobjects.c:615 __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline] WARNING: CPU: 1 PID: 7046 at lib/debugobjects.c:615 debug_check_no_obj_freed+0x447/0x540 lib/debugobjects.c:1129 Modules linked in: CPU: 1 UID: 0 PID: 7046 Comm: syz.0.91 Not tainted 6.16.0-syzkaller-11241-g186f3edfdd41 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:debug_print_object lib/debugobjects.c:612 [inline] RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:1099 [inline] RIP: 0010:debug_check_no_obj_freed+0x447/0x540 lib/debugobjects.c:1129 Code: 4c 8b 4d 00 48 c7 c7 20 32 7e 8b 48 c7 c6 a0 2e 7e 8b 48 c7 c2 a0 33 7e 8b 8b 0c 24 4d 89 f8 41 55 e8 2d 39 fc fc 48 83 c4 08 <0f> 0b 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc ff df ff 05 ee e6 af RSP: 0018:ffffc9000442fbc0 EFLAGS: 00010296 RAX: 5186da76fb94ec00 RBX: ffffffff9947a418 RCX: ffff88807dec1e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffffffff8b29ccc0 R08: ffffc9000442f8e7 R09: 1ffff92000885f1c R10: dffffc0000000000 R11: fffff52000885f1d R12: ffff888051210e80 R13: ffffffff8a3b96e0 R14: ffff888051210000 R15: ffff888051210d68 FS: 00007f2c1956e6c0(0000) GS:ffff8881267b3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2c1956ed58 CR3: 000000004e812000 CR4: 00000000003526f0 Call Trace: slab_free_hook mm/slub.c:2348 [inline] slab_free mm/slub.c:4680 [inline] kmem_cache_free+0x10b/0x3e0 mm/slub.c:4782 sk_prot_free net/core/sock.c:2276 [inline] __sk_destruct+0x4ce/0x660 net/core/sock.c:2373 kcm_release+0x524/0x5c0 net/kcm/kcmsock.c:1730 __sock_release net/socket.c:649 [inline] sock_close+0xbf/0x240 net/socket.c:1439 __fput+0x44c/0xa70 fs/file_table.c:468 fput_close_sync+0x115/0x200 fs/file_table.c:573 __do_sys_close fs/open.c:1587 [inline] __se_sys_close fs/open.c:1572 [inline] __x64_sys_close+0x7b/0x110 fs/open.c:1572 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x86/0x2e0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f2c1878eb69 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2c1956e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 00007f2c189b6160 RCX: 00007f2c1878eb69 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00007f2c18811df1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f2c189b6160 R15: 00007ffe5b7ca8c8