------------[ cut here ]------------ refcount_t: decrement hit 0; leaking memory. WARNING: CPU: 0 PID: 5173 at lib/refcount.c:31 refcount_warn_saturate+0x1ed/0x210 lib/refcount.c:31 Modules linked in: CPU: 0 PID: 5173 Comm: syz-executor233 Not tainted 6.8.0-syzkaller-09791-ge5eb28f6d1af #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:refcount_warn_saturate+0x1ed/0x210 lib/refcount.c:31 Code: 8b e8 07 41 d6 fc 90 0f 0b 90 90 e9 c3 fe ff ff e8 c8 92 13 fd c6 05 30 38 0f 0b 01 90 48 c7 c7 80 28 6e 8b e8 e4 40 d6 fc 90 <0f> 0b 90 90 e9 a0 fe ff ff 48 89 ef e8 d2 7e 6e fd e9 44 fe ff ff RSP: 0018:ffffc900035e78e0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff814fb049 RDX: ffff888023d18000 RSI: ffffffff814fb056 RDI: 0000000000000001 RBP: ffff88802d4306fc R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88802d4306fc R13: 0000000000000000 R14: 0000000000dc0232 R15: ffff888016d18148 FS: 000055555b90e380(0000) GS:ffff88806b200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000002b9a6000 CR4: 0000000000350ef0 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] dec_stack_record_count mm/page_owner.c:215 [inline] __reset_page_owner+0x2ea/0x370 mm/page_owner.c:253 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1141 [inline] free_unref_page_prepare+0x527/0xb10 mm/page_alloc.c:2347 free_unref_page+0x33/0x3c0 mm/page_alloc.c:2487 vfree+0x181/0x7a0 mm/vmalloc.c:3324 kvfree+0x33/0x50 mm/util.c:678 __htab_map_lookup_and_delete_batch+0x1213/0x2030 kernel/bpf/hashtab.c:1902 bpf_map_do_batch+0x52f/0x720 kernel/bpf/syscall.c:5147 __sys_bpf+0x4711/0x4b40 kernel/bpf/syscall.c:5691 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline] __se_sys_bpf kernel/bpf/syscall.c:5736 [inline] __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5736 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f493f6c53a9 Code: 48 83 c4 28 c3 e8 37 17 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:00007fff545cece8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fff545ceeb8 RCX: 00007f493f6c53a9 RDX: 0000000000000038 RSI: 0000000020000080 RDI: 0000000000000019 RBP: 00007f493f738610 R08: 0000000000000000 R09: 00007fff545ceeb8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fff545ceea8 R14: 0000000000000001 R15: 0000000000000001