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BUG: KASAN: vmalloc-out-of-bounds in vrealloc_noprof+0x132/0x320 mm/vmalloc.c:4095
Write of size 2097120 at addr ffffc90015800020 by task syz.3.4281/23641

CPU: 1 UID: 0 PID: 23641 Comm: syz.3.4281 Not tainted 6.13.0-rc3-syzkaller-00258-ge84a3bf7f4aa #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189
 __asan_memset+0x23/0x50 mm/kasan/shadow.c:84
 vrealloc_noprof+0x132/0x320 mm/vmalloc.c:4095
 kvrealloc_noprof+0xc1/0x180 mm/util.c:742
 push_insn_history+0x2ac/0x690 kernel/bpf/verifier.c:3575
 check_stack_read_fixed_off kernel/bpf/verifier.c:5119 [inline]
 check_stack_read kernel/bpf/verifier.c:5217 [inline]
 check_mem_access+0x5bd1/0x7a80 kernel/bpf/verifier.c:7249
 do_check kernel/bpf/verifier.c:18663 [inline]
 do_check_common+0x5169/0xcea0 kernel/bpf/verifier.c:21848
 do_check_main kernel/bpf/verifier.c:21939 [inline]
 bpf_check+0x703a/0xb0d0 kernel/bpf/verifier.c:22665
 bpf_prog_load+0xedb/0x2660 kernel/bpf/syscall.c:2947
 __sys_bpf+0x4043/0x49c0 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+0x78/0xc0 kernel/bpf/syscall.c:5895
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe492b85d29
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:00007fe4909f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fe492d75fa0 RCX: 00007fe492b85d29
RDX: 0000000000000048 RSI: 0000000020000200 RDI: 0000000000000005
RBP: 00007fe492c01aa8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe492d75fa0 R15: 00007ffd33ef7498
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc90015400000, ffffc90015a01000) created by:
 kvrealloc_noprof+0xfc/0x180 mm/util.c:747

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x80c00
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 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 23641, tgid 23637 (syz.3.4281), ts 1518772784633, free_ts 1480194266382
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1556
 prep_new_page mm/page_alloc.c:1564 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3474
 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4751
 alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269
 vm_area_alloc_pages mm/vmalloc.c:3589 [inline]
 __vmalloc_area_node mm/vmalloc.c:3667 [inline]
 __vmalloc_node_range_noprof+0x724/0x1530 mm/vmalloc.c:3844
 __kvmalloc_node_noprof+0x14f/0x1a0 mm/util.c:672
 kvrealloc_noprof+0xfc/0x180 mm/util.c:747
 push_insn_history+0x2ac/0x690 kernel/bpf/verifier.c:3575
 is_state_visited kernel/bpf/verifier.c:18322 [inline]
 do_check kernel/bpf/verifier.c:18571 [inline]
 do_check_common+0x6933/0xcea0 kernel/bpf/verifier.c:21848
 do_check_main kernel/bpf/verifier.c:21939 [inline]
 bpf_check+0x703a/0xb0d0 kernel/bpf/verifier.c:22665
 bpf_prog_load+0xedb/0x2660 kernel/bpf/syscall.c:2947
 __sys_bpf+0x4043/0x49c0 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+0x78/0xc0 kernel/bpf/syscall.c:5895
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
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_pages_ok+0x62b/0xe40 mm/page_alloc.c:1269
 __folio_put+0x32a/0x450 mm/swap.c:112
 folio_put include/linux/mm.h:1488 [inline]
 put_page+0x21e/0x280 include/linux/mm.h:1560
 io_pages_unmap+0x1ab/0x3d0 io_uring/memmap.c:114
 io_rings_free+0x9f/0x300 io_uring/io_uring.c:2654
 io_ring_ctx_free io_uring/io_uring.c:2754 [inline]
 io_ring_exit_work+0xce0/0x1b20 io_uring/io_uring.c:2968
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 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:
 ffffc900157fff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc900157fff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90015800000: 00 00 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
                               ^
 ffffc90015800080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ffffc90015800100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
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