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BUG: KASAN: slab-out-of-bounds in __bpf_get_stackid+0x868/0xcf0
Write of size 8 at addr ffff888110748a58 by task syz.2.264/6832

CPU: 0 UID: 0 PID: 6832 Comm: syz.2.264 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+0x868/0xcf0
 bpf_get_stackid_raw_tp+0x196/0x210
 bpf_prog_b724608cae728045+0x27/0x2f
 bpf_trace_run2+0x284/0x4b0
 kfree+0x3a0/0x440
 do_check+0x98d1/0xe520
 do_check_common+0x1949/0x24f0
 bpf_check+0x1746a/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: 0033:0x7f22d498ebe9
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:00007f22d5856038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f22d4bb5fa0 RCX: 00007f22d498ebe9
RDX: 0000000000000048 RSI: 00002000000017c0 RDI: 0000000000000005
RBP: 00007f22d4a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f22d4bb6038 R14: 00007f22d4bb5fa0 R15: 00007ffd953798e8
 </TASK>

Allocated by task 6832:
 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 ffff888110748800
 which belongs to the cache kmalloc-cg-1k of size 1024
The buggy address is located 24 bytes to the right of
 allocated 576-byte region [ffff888110748800, ffff888110748a40)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88811074b000 pfn:0x110748
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff888108e9d901
flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000040 ffff88801a44b280 dead000000000122 0000000000000000
raw: ffff88811074b000 000000008010000d 00000000f5000000 ffff888108e9d901
head: 057ff00000000040 ffff88801a44b280 dead000000000122 0000000000000000
head: ffff88811074b000 000000008010000d 00000000f5000000 ffff888108e9d901
head: 057ff00000000003 ffffea000441d201 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 6208, tgid 6207 (syz.2.80), ts 71321654950, free_ts 70887501703
 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_node_noprof+0x2fd/0x4e0
 bpf_map_area_alloc+0x64/0x180
 prealloc_init+0x123/0x630
 htab_map_alloc+0x6ce/0xc70
 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
page last free pid 5293 tgid 5293 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
 __kmalloc_noprof+0x224/0x4f0
 tomoyo_encode+0x28b/0x550
 tomoyo_realpath_from_path+0x58d/0x5d0
 tomoyo_check_open_permission+0x1c1/0x3b0
 security_file_open+0xb1/0x270
 do_dentry_open+0x384/0x13f0
 vfs_open+0x3b/0x340
 path_openat+0x2ee5/0x3830
 do_filp_open+0x1fa/0x410

Memory state around the buggy address:
 ffff888110748900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888110748980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888110748a00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
                                                    ^
 ffff888110748a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888110748b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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