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BUG: KASAN: vmalloc-out-of-bounds in vrealloc_noprof+0x354/0x3e0 mm/vmalloc.c:4093
Write of size 4064 at addr ffffc9000d579020 by task syz.0.0/5335

CPU: 0 UID: 0 PID: 5335 Comm: syz.0.0 Not tainted 6.15.0-rc3-syzkaller-00001-g9d7a0577c9db #0 PREEMPT(full) 
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:408 [inline]
 print_report+0x16e/0x5b0 mm/kasan/report.c:521
 kasan_report+0x143/0x180 mm/kasan/report.c:634
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x28f/0x2a0 mm/kasan/generic.c:189
 __asan_memset+0x23/0x50 mm/kasan/shadow.c:84
 vrealloc_noprof+0x354/0x3e0 mm/vmalloc.c:4093
 push_insn_history+0x16f/0x6b0 kernel/bpf/verifier.c:3874
 do_check+0x609c/0xef50 kernel/bpf/verifier.c:19450
 do_check_common+0x16e4/0x20f0 kernel/bpf/verifier.c:22776
 do_check_main kernel/bpf/verifier.c:22867 [inline]
 bpf_check+0x16ad9/0x1d1c0 kernel/bpf/verifier.c:24033
 bpf_prog_load+0x17ee/0x2250 kernel/bpf/syscall.c:2971
 __sys_bpf+0x5dd/0x8b0 kernel/bpf/syscall.c:5834
 __do_sys_bpf kernel/bpf/syscall.c:5941 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5939 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5939
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f78d4b8e169
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:00007f78d5ab6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f78d4db6080 RCX: 00007f78d4b8e169
RDX: 0000000000000048 RSI: 00002000000017c0 RDI: 0000000000000005
RBP: 00007f78d4c10a68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f78d4db6080 R15: 00007ffc7b1f3d38
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc9000d539000, ffffc9000d57b000) created by:
 kvrealloc_noprof+0x87/0xe0 mm/slub.c:5123

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88803f1dfa80 pfn:0x3f1df
flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff)
raw: 04fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: ffff88803f1dfa80 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 5335, tgid 5333 (syz.0.0), ts 77715624700, free_ts 77415060987
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1718
 prep_new_page mm/page_alloc.c:1726 [inline]
 get_page_from_freelist+0x360a/0x37a0 mm/page_alloc.c:3688
 __alloc_pages_slowpath+0x436/0x1080 mm/page_alloc.c:4509
 __alloc_frozen_pages_noprof+0x40d/0x5b0 mm/page_alloc.c:4983
 alloc_pages_mpol+0x339/0x690 mm/mempolicy.c:2301
 alloc_frozen_pages_noprof mm/mempolicy.c:2372 [inline]
 alloc_pages_noprof+0x121/0x190 mm/mempolicy.c:2392
 vm_area_alloc_pages mm/vmalloc.c:3591 [inline]
 __vmalloc_area_node mm/vmalloc.c:3669 [inline]
 __vmalloc_node_range_noprof+0x9cb/0x1390 mm/vmalloc.c:3844
 __kvmalloc_node_noprof+0x3b2/0x5a0 mm/slub.c:5048
 kvrealloc_noprof+0x87/0xe0 mm/slub.c:5123
 push_insn_history+0x16f/0x6b0 kernel/bpf/verifier.c:3874
 do_check+0x609c/0xef50 kernel/bpf/verifier.c:19450
 do_check_common+0x16e4/0x20f0 kernel/bpf/verifier.c:22776
 do_check_main kernel/bpf/verifier.c:22867 [inline]
 bpf_check+0x16ad9/0x1d1c0 kernel/bpf/verifier.c:24033
 bpf_prog_load+0x17ee/0x2250 kernel/bpf/syscall.c:2971
 __sys_bpf+0x5dd/0x8b0 kernel/bpf/syscall.c:5834
 __do_sys_bpf kernel/bpf/syscall.c:5941 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5939 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5939
page last free pid 15 tgid 15 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1262 [inline]
 __free_frozen_pages+0xde8/0x10a0 mm/page_alloc.c:2725
 rcu_do_batch kernel/rcu/tree.c:2568 [inline]
 rcu_core+0xaac/0x17a0 kernel/rcu/tree.c:2824
 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579
 run_ksoftirqd+0xcf/0x130 kernel/softirq.c:968
 smpboot_thread_fn+0x576/0xaa0 kernel/smpboot.c:164
 kthread+0x7b7/0x940 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffffc9000d578f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000d578f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc9000d579000: 00 00 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
                               ^
 ffffc9000d579080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ffffc9000d579100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
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