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BUG: KASAN: slab-out-of-bounds in __bpf_get_stackid+0x677/0xcf0
Write of size 8 at addr ffff88810ff63a48 by task syz.2.844/8819

CPU: 1 UID: 0 PID: 8819 Comm: syz.2.844 Not tainted 6.17.0-rc1-syzkaller-00022-g07866544e410 #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:
 <IRQ>
 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
 slab_free_after_rcu_debug+0x60/0x2a0
 rcu_core+0xcab/0x1770
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 5b 98 15 f6 e8 96 f2 4c f6 fb bf 01 00 00 00 <e8> 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90006976f00 EFLAGS: 00000286
RAX: 2efade9d4517a200 RBX: 0000000000000000 RCX: 2efade9d4517a200
RDX: 0000000000000000 RSI: ffffffff8d9b6dc3 RDI: 0000000000000001
RBP: ffffc90006976fa0 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000d2ede0
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__vmap_pages_range_noflush+0x258/0xe10
Code: e9 7b 08 00 00 e8 38 76 ad ff 48 8b 7c 24 08 49 89 fe 49 c1 ee 03 43 80 3c 3e 00 74 0a e8 70 e8 10 00 48 8b 7c 24 08 48 8b 1f <e9> 6d 08 00 00 e8 0e 76 ad ff 31 ff 48 89 de e8 e4 7a ad ff 48 85
RSP: 0018:ffffc90006977068 EFLAGS: 00000246
RAX: ffffffff82123df7 RBX: 000000001a400067 RCX: ffff888022081cc0
RDX: 0000000000000000 RSI: ffffc90004623fff RDI: ffffffff8df36c90
RBP: 0000000000000000 R08: 000000000000000c R09: 1ffffffff1bc2cd0
R10: dffffc0000000000 R11: fffffbfff1bc2cd1 R12: ffffc90004623000
R13: ffffc90004624000 R14: 1ffffffff1be6d92 R15: dffffc0000000000
 __vmalloc_node_range_noprof+0xeb5/0x12f0
 vmalloc_noprof+0xb2/0xf0
 bpf_prog_calc_tag+0xb9/0x620
 resolve_pseudo_ldimm64+0xbc/0xc50
 bpf_check+0x1c58/0x1d2e0
 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: 0033:0x7f29b438ebe9
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:00007f29b5120038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f29b45b5fa0 RCX: 00007f29b438ebe9
RDX: 0000000000000048 RSI: 00002000000017c0 RDI: 0000000000000005
RBP: 00007f29b4411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f29b45b6038 R14: 00007f29b45b5fa0 R15: 00007ffe74633568
 </TASK>

Allocated by task 8819:
 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 ffff88810ff63800
 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 [ffff88810ff63800, ffff88810ff63a40)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10ff60
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88810731c401
flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000040 ffff88801a44b280 ffffea0004640000 dead000000000002
raw: 0000000000000000 0000000080100010 00000000f5000000 ffff88810731c401
head: 057ff00000000040 ffff88801a44b280 ffffea0004640000 dead000000000002
head: 0000000000000000 0000000080100010 00000000f5000000 ffff88810731c401
head: 057ff00000000003 ffffea00043fd801 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 5850, tgid 5850 (syz-executor), ts 56666788428, free_ts 47142858989
 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
 addrconf_sysctl_register+0xb3/0x1c0
 ipv6_add_dev+0xd46/0x1370
 ipv6_find_idev+0xc1/0x1d0
 inet6_rtm_newaddr+0x734/0xd20
 rtnetlink_rcv_msg+0x7cf/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x82f/0x9e0
page last free pid 5814 tgid 5814 stack trace:
 __free_frozen_pages+0xbc4/0xd30
 __put_partials+0x156/0x1a0
 put_cpu_partial+0x17c/0x250
 __slab_free+0x2d5/0x3c0
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 kmem_cache_alloc_noprof+0x1c1/0x3c0
 getname_flags+0xb8/0x540
 vfs_fstatat+0x43/0x170
 __x64_sys_newfstatat+0x116/0x190
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88810ff63900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88810ff63980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88810ff63a00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
                                              ^
 ffff88810ff63a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88810ff63b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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