==================================================================
BUG: KASAN: slab-out-of-bounds in __bpf_get_stackid+0x6fa/0x960 kernel/bpf/stackmap.c:274
Write of size 32 at addr ffff888131840b10 by task syz.4.618/2651

CPU: 0 PID: 2651 Comm: syz.4.618 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <IRQ>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 memcpy+0x44/0x70 mm/kasan/shadow.c:66
 __bpf_get_stackid+0x6fa/0x960 kernel/bpf/stackmap.c:274
 ____bpf_get_stackid_pe kernel/bpf/stackmap.c:365 [inline]
 bpf_get_stackid_pe+0x2ee/0x400 kernel/bpf/stackmap.c:334
 bpf_prog_7018bb76bd3f7f7a+0x28/0x3d
 bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline]
 __bpf_prog_run include/linux/filter.h:596 [inline]
 bpf_prog_run include/linux/filter.h:614 [inline]
 bpf_overflow_handler+0x521/0x5e0 kernel/events/core.c:10273
 __perf_event_overflow+0x458/0x640 kernel/events/core.c:9448
 perf_event_overflow kernel/events/core.c:9469 [inline]
 perf_swevent_hrtimer+0x4b4/0x540 kernel/events/core.c:10919
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x398/0x890 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x3ad/0x8c0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x11e/0x440 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x30/0x60 kernel/kcov.c:216
Code: 45 08 65 48 8b 0d 90 18 91 7e 65 8b 15 91 18 91 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 6c 0b 00 00 00 74 2c <8b> 91 48 0b 00 00 83 fa 02 75 21 48 8b 91 50 0b 00 00 48 8b 32 48
RSP: 0018:ffffc90004d87b50 EFLAGS: 00000246
RAX: ffffffff8167976e RBX: 0000000000000001 RCX: ffff888111f48000
RDX: 0000000000000000 RSI: ffffc90004d87bf8 RDI: ffffc90004d87bc0
RBP: ffffc90004d87b50 R08: ffffc90004d87bbf R09: 1ffff920009b0f77
R10: dffffc0000000000 R11: fffff520009b0f78 R12: ffffc90004d87c20
R13: 1ffff920009b0f78 R14: ffffc90004d87be0 R15: ffff888108d60c88
 arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
 static_key_false include/linux/jump_label.h:230 [inline]
 trace_android_vh_futex_wake_traverse_plist include/trace/hooks/futex.h:36 [inline]
 futex_wake+0x1ee/0x8e0 kernel/futex/waitwake.c:168
 do_futex+0x2bf/0x430 kernel/futex/syscalls.c:141
 __do_sys_futex kernel/futex/syscalls.c:213 [inline]
 __se_sys_futex+0x136/0x310 kernel/futex/syscalls.c:194
 __x64_sys_futex+0xe5/0x100 kernel/futex/syscalls.c:194
 x64_sys_call+0x7ec/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:203
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd59919ce59
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:00007fd597bd60e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fd599416098 RCX: 00007fd59919ce59
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd59941609c
RBP: 00007fd599416090 R08: 001fb41e394c7236 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd599416128 R14: 00007fff4bae5360 R15: 00007fff4bae5448
 </TASK>

Allocated by task 2651:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:380 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc_node+0xb2/0x1e0 mm/slab_common.c:945
 kmalloc_node include/linux/slab.h:589 [inline]
 __bpf_map_area_alloc kernel/bpf/syscall.c:328 [inline]
 bpf_map_area_alloc+0x4b/0xe0 kernel/bpf/syscall.c:341
 prealloc_elems_and_freelist+0x8a/0x1e0 kernel/bpf/stackmap.c:51
 stack_map_alloc+0x398/0x520 kernel/bpf/stackmap.c:117
 find_and_alloc_map kernel/bpf/syscall.c:133 [inline]
 map_create+0x467/0xcf0 kernel/bpf/syscall.c:1126
 __sys_bpf+0x34e/0x850 kernel/bpf/syscall.c:4988
 __do_sys_bpf kernel/bpf/syscall.c:5110 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5108 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5108
 x64_sys_call+0x488/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Last potentially related work creation:
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46
 __kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 kvfree_call_rcu+0x8b/0x7a0 kernel/rcu/tree.c:3445
 ip6addrlbl_net_exit+0x10f/0x180 net/ipv6/addrlabel.c:347
 ops_exit_list net/core/net_namespace.c:172 [inline]
 cleanup_net+0x5b0/0xb10 net/core/net_namespace.c:604
 process_one_work+0x717/0xc30 kernel/workqueue.c:2302
 worker_thread+0xa4d/0x11d0 kernel/workqueue.c:2449
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

The buggy address belongs to the object at ffff888131840b00
 which belongs to the cache kmalloc-64 of size 64
The buggy address is located 16 bytes inside of
 64-byte region [ffff888131840b00, ffff888131840b40)

The buggy address belongs to the physical page:
page:ffffea0004c61000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x131840
flags: 0x4000000000000200(slab|zone=1)
raw: 4000000000000200 0000000000000000 dead000000000001 ffff888100042780
raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 291, tgid 291 (syz-executor), ts 22631284289, free_ts 0
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2672
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2679
 get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4586
 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5930
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3e0 mm/slub.c:2020
 ___slab_alloc+0x70f/0xb70 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 __kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423
 __do_kmalloc_node mm/slab_common.c:937 [inline]
 __kmalloc+0xa4/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 kobject_get_path+0xbf/0x200 lib/kobject.c:152
 kobject_uevent_env+0x29f/0x720 lib/kobject_uevent.c:544
 kobject_uevent+0x1d/0x30 lib/kobject_uevent.c:657
 netdev_queue_add_kobject net/core/net-sysfs.c:1671 [inline]
 netdev_queue_update_kobjects+0x22c/0x470 net/core/net-sysfs.c:1712
 register_queue_kobjects net/core/net-sysfs.c:1773 [inline]
 netdev_register_kobject+0x281/0x330 net/core/net-sysfs.c:2013
 register_netdevice+0xec9/0x1550 net/core/dev.c:10206
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888131840a00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
 ffff888131840a80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff888131840b00: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
                                  ^
 ffff888131840b80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff888131840c00: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
==================================================================
----------------
Code disassembly (best guess):
   0:	45 08 65 48          	or     %r12b,0x48(%r13)
   4:	8b 0d 90 18 91 7e    	mov    0x7e911890(%rip),%ecx        # 0x7e91189a
   a:	65 8b 15 91 18 91 7e 	mov    %gs:0x7e911891(%rip),%edx        # 0x7e9118a2
  11:	81 e2 00 01 ff 00    	and    $0xff0100,%edx
  17:	74 11                	je     0x2a
  19:	81 fa 00 01 00 00    	cmp    $0x100,%edx
  1f:	75 35                	jne    0x56
  21:	83 b9 6c 0b 00 00 00 	cmpl   $0x0,0xb6c(%rcx)
  28:	74 2c                	je     0x56
* 2a:	8b 91 48 0b 00 00    	mov    0xb48(%rcx),%edx <-- trapping instruction
  30:	83 fa 02             	cmp    $0x2,%edx
  33:	75 21                	jne    0x56
  35:	48 8b 91 50 0b 00 00 	mov    0xb50(%rcx),%rdx
  3c:	48 8b 32             	mov    (%rdx),%rsi
  3f:	48                   	rex.W