------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff88807dcf7668 object type: work_struct hint: kcm_tx_work+0x0/0x180 net/kcm/kcmsock.c:-1 WARNING: CPU: 0 PID: 6293 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612 Modules linked in: CPU: 0 UID: 0 PID: 6293 Comm: syz.0.87 Not tainted 6.16.0-rc6-syzkaller-g7abc678e3084 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612 Code: 4c 89 ff e8 e7 b7 5b fd 4d 8b 0f 48 c7 c7 a0 95 e2 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 da 93 bd fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 c7 85 db 0a 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 RSP: 0018:ffffc900021efb30 EFLAGS: 00010296 RAX: f0e2d1323eb60c00 RBX: dffffc0000000000 RCX: ffff88802699da00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfaa6c R12: ffffffff8a9e4d50 R13: ffffffff8be29720 R14: ffff88807dcf7668 R15: ffffffff8b89dd60 FS: 00007f6914e486c0(0000) GS:ffff888125c23000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6914e47f98 CR3: 00000000288b8000 CR4: 00000000003526f0 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:1099 [inline] debug_check_no_obj_freed+0x3a2/0x470 lib/debugobjects.c:1129 slab_free_hook mm/slub.c:2312 [inline] slab_free mm/slub.c:4643 [inline] kmem_cache_free+0x113/0x400 mm/slub.c:4745 sk_prot_free net/core/sock.c:2284 [inline] __sk_destruct+0x4d2/0x660 net/core/sock.c:2381 kcm_release+0x528/0x5c0 net/kcm/kcmsock.c:1731 __sock_release net/socket.c:647 [inline] sock_close+0xc0/0x240 net/socket.c:1391 __fput+0x44c/0xa70 fs/file_table.c:465 fput_close_sync+0x119/0x200 fs/file_table.c:570 __do_sys_close fs/open.c:1589 [inline] __se_sys_close fs/open.c:1574 [inline] __x64_sys_close+0x7f/0x110 fs/open.c:1574 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6913f8e9a9 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:00007f6914e48038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 00007f69141b6160 RCX: 00007f6913f8e9a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00007f6914010d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f69141b6160 R15: 00007ffe8d790a18