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BUG: KASAN: vmalloc-out-of-bounds in vrealloc_noprof+0x341/0x3d0 mm/vmalloc.c:4097
Write of size 4064 at addr ffffc9000d3d1020 by task syz.0.0/5320

CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted 6.13.0-rc7-syzkaller-00043-g619f0b6fad52 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:489
 kasan_report+0x143/0x180 mm/kasan/report.c:602
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 __asan_memset+0x23/0x50 mm/kasan/shadow.c:84
 vrealloc_noprof+0x341/0x3d0 mm/vmalloc.c:4097
 push_insn_history+0x16c/0x6a0 kernel/bpf/verifier.c:3575
 do_check+0x692f/0xfcd0 kernel/bpf/verifier.c:18590
 do_check_common+0x1564/0x2010 kernel/bpf/verifier.c:21848
 do_check_main kernel/bpf/verifier.c:21939 [inline]
 bpf_check+0x804e/0x1fc90 kernel/bpf/verifier.c:22665
 bpf_prog_load+0x1667/0x20f0 kernel/bpf/syscall.c:2947
 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5790
 __do_sys_bpf kernel/bpf/syscall.c:5897 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5895 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5895
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fea82585d29
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:00007fea8346c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fea82775fa0 RCX: 00007fea82585d29
RDX: 0000000000000048 RSI: 00000000200017c0 RDI: 0000000000000005
RBP: 00007fea82601b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fea82775fa0 R15: 00007ffd5cf882b8
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc9000d3c1000, ffffc9000d3d3000) created by:
 kvrealloc_noprof+0xc7/0x120 mm/util.c:742

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xa4 pfn:0x34536
flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff)
raw: 04fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 00000000000000a4 0000000000000000 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 0x102cc2(GFP_HIGHUSER|__GFP_NOWARN), pid 5320, tgid 5319 (syz.0.0), ts 71319882594, free_ts 71228351782
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1558
 prep_new_page mm/page_alloc.c:1566 [inline]
 get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3476
 __alloc_pages_slowpath+0x414/0x1020 mm/page_alloc.c:4288
 __alloc_pages_noprof+0x49b/0x710 mm/page_alloc.c:4766
 alloc_pages_mpol_noprof+0x3e1/0x780 mm/mempolicy.c:2269
 vm_area_alloc_pages mm/vmalloc.c:3591 [inline]
 __vmalloc_area_node mm/vmalloc.c:3669 [inline]
 __vmalloc_node_range_noprof+0x9c9/0x1380 mm/vmalloc.c:3846
 __kvmalloc_node_noprof+0x142/0x190 mm/util.c:667
 kvrealloc_noprof+0xc7/0x120 mm/util.c:742
 push_insn_history+0x16c/0x6a0 kernel/bpf/verifier.c:3575
 do_check+0x692f/0xfcd0 kernel/bpf/verifier.c:18590
 do_check_common+0x1564/0x2010 kernel/bpf/verifier.c:21848
 do_check_main kernel/bpf/verifier.c:21939 [inline]
 bpf_check+0x804e/0x1fc90 kernel/bpf/verifier.c:22665
 bpf_prog_load+0x1667/0x20f0 kernel/bpf/syscall.c:2947
 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5790
 __do_sys_bpf kernel/bpf/syscall.c:5897 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5895 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5895
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
page last free pid 81 tgid 81 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_unref_folios+0xe39/0x18b0 mm/page_alloc.c:2706
 shrink_folio_list+0x3193/0x5ca0 mm/vmscan.c:1490
 evict_folios+0x3c92/0x58c0 mm/vmscan.c:4600
 try_to_shrink_lruvec+0x9a6/0xc70 mm/vmscan.c:4799
 shrink_one+0x3b9/0x850 mm/vmscan.c:4844
 shrink_many mm/vmscan.c:4907 [inline]
 lru_gen_shrink_node mm/vmscan.c:4985 [inline]
 shrink_node+0x37c5/0x3e50 mm/vmscan.c:5966
 kswapd_shrink_node mm/vmscan.c:6795 [inline]
 balance_pgdat mm/vmscan.c:6987 [inline]
 kswapd+0x1ca9/0x36f0 mm/vmscan.c:7256
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffffc9000d3d0f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000d3d0f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc9000d3d1000: 00 00 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
                               ^
 ffffc9000d3d1080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ffffc9000d3d1100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
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