------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: work_struct hint: kcm_tx_work+0x0/0x180 WARNING: CPU: 0 PID: 5113 at lib/debugobjects.c:521 debug_print_object lib/debugobjects.c:518 [inline] WARNING: CPU: 0 PID: 5113 at lib/debugobjects.c:521 __debug_check_no_obj_freed lib/debugobjects.c:973 [inline] WARNING: CPU: 0 PID: 5113 at lib/debugobjects.c:521 debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1003 Modules linked in: CPU: 0 PID: 5113 Comm: syz.0.21 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:debug_print_object lib/debugobjects.c:518 [inline] RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:973 [inline] RIP: 0010:debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1003 Code: ef e8 48 dd d5 fd 4c 8b 45 00 48 c7 c7 a0 02 7a 8a 48 c7 c6 60 ff 79 8a 48 c7 c2 00 04 7a 8a 8b 0c 24 4d 89 e9 e8 14 2a c9 05 <0f> 0b 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc ff df ff 05 c5 c7 a1 RSP: 0018:ffffc90002e0fbc0 EFLAGS: 00010246 RAX: 52f9580818f37200 RBX: ffffffff96503bf0 RCX: ffff888028619dc0 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffffff8a2a5780 R08: ffff8880b9033d7f R09: 1ffff110172067af R10: dffffc0000000000 R11: ffffed10172067b0 R12: ffff88807ab933c8 R13: ffffffff8904bc80 R14: ffff88807ab93000 R15: ffff88807ab932b0 FS: 00007f6e9cc4b6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6e9cc4aff8 CR3: 000000007d3ef000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: slab_free_hook mm/slub.c:1685 [inline] slab_free_freelist_hook+0x8b/0x170 mm/slub.c:1736 slab_free mm/slub.c:3504 [inline] kmem_cache_free+0x8f/0x210 mm/slub.c:3520 sk_prot_free net/core/sock.c:1903 [inline] __sk_destruct+0x569/0x840 net/core/sock.c:1991 kcm_release+0x51a/0x5b0 net/kcm/kcmsock.c:1861 __sock_release net/socket.c:651 [inline] sock_close+0xd5/0x240 net/socket.c:1345 __fput+0x234/0x930 fs/file_table.c:311 task_work_run+0x125/0x1a0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f6e9da290f9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6e9cc4b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007f6e9dc65160 RCX: 00007f6e9da290f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00007f6e9dabbc7c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f6e9dc65160 R15: 00007fffe8ce8f88