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BUG: KASAN: slab-out-of-bounds in __bpf_get_stackid+0x677/0xcf0
Write of size 8 at addr ffff88812642d248 by task syz.0.82/6160

CPU: 1 UID: 0 PID: 6160 Comm: syz.0.82 Not tainted 6.17.0-rc1-syzkaller-00022-g07866544e410-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 print_report+0xca/0x240
 kasan_report+0x118/0x150
 __bpf_get_stackid+0x677/0xcf0
 bpf_get_stackid_raw_tp+0x196/0x210
 bpf_prog_b724608cae728045+0x27/0x2f
 bpf_trace_run2+0x284/0x4b0
 kfree+0x3a0/0x440
 vfree+0x353/0x400
 bpf_check+0x164f1/0x1d2e0
 bpf_prog_load+0x1318/0x1930
 __sys_bpf+0x528/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb1ca38ebe9
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:00007fb1cb276038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fb1ca5b5fa0 RCX: 00007fb1ca38ebe9
RDX: 0000000000000094 RSI: 0000200000002c80 RDI: 0000000000000005
RBP: 00007fb1ca411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb1ca5b6038 R14: 00007fb1ca5b5fa0 R15: 00007ffe065ff398
 </TASK>

Allocated by task 6160:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_node_noprof+0x276/0x4e0
 bpf_map_area_alloc+0x64/0x180
 prealloc_elems_and_freelist+0x86/0x1d0
 stack_map_alloc+0x33f/0x4c0
 map_create+0xaa3/0x14d0
 __sys_bpf+0x60f/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88812642d000
 which belongs to the cache kmalloc-cg-1k of size 1024
The buggy address is located 8 bytes to the right of
 allocated 576-byte region [ffff88812642d000, ffff88812642d240)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x126428
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88810eea8401
flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000040 ffff88801a44b280 ffffea0004245600 dead000000000002
raw: 0000000000000000 0000000080100010 00000000f5000000 ffff88810eea8401
head: 057ff00000000040 ffff88801a44b280 ffffea0004245600 dead000000000002
head: 0000000000000000 0000000080100010 00000000f5000000 ffff88810eea8401
head: 057ff00000000003 ffffea0004990a01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5854, tgid 5854 (syz-executor), ts 65620276647, free_ts 0
 post_alloc_hook+0x240/0x2a0
 get_page_from_freelist+0x21e4/0x22c0
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x8a/0x370
 ___slab_alloc+0xbeb/0x1410
 __kmalloc_noprof+0x305/0x4f0
 __register_sysctl_table+0x72/0x1340
 neigh_sysctl_register+0x9a2/0xa80
 devinet_sysctl_register+0xad/0x200
 inetdev_event+0xef2/0x15b0
 notifier_call_chain+0x1b6/0x3e0
 netif_change_name+0x5e9/0x960
 do_setlink+0x9f6/0x41c0
 rtnl_newlink+0x160b/0x1c70
 rtnetlink_rcv_msg+0x7cf/0xb70
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88812642d100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88812642d180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88812642d200: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
                                              ^
 ffff88812642d280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88812642d300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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