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BUG: KASAN: slab-use-after-free in __vma_shareable_lock include/linux/hugetlb.h:1268 [inline]
BUG: KASAN: slab-use-after-free in hugetlb_vma_unlock_read mm/hugetlb.c:280 [inline]
BUG: KASAN: slab-use-after-free in hugetlb_no_page mm/hugetlb.c:6316 [inline]
BUG: KASAN: slab-use-after-free in hugetlb_fault+0x1689/0x1fb0 mm/hugetlb.c:6422
Read of size 8 at addr ffff8880783fa020 by task syz-executor.3/4951

CPU: 0 PID: 4951 Comm: syz-executor.3 Not tainted 6.8.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xf8/0x260 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x167/0x540 mm/kasan/report.c:488
 kasan_report+0x142/0x180 mm/kasan/report.c:601
 __vma_shareable_lock include/linux/hugetlb.h:1268 [inline]
 hugetlb_vma_unlock_read mm/hugetlb.c:280 [inline]
 hugetlb_no_page mm/hugetlb.c:6316 [inline]
 hugetlb_fault+0x1689/0x1fb0 mm/hugetlb.c:6422
 handle_mm_fault+0x362e/0x5380 mm/memory.c:5667
 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
 handle_page_fault arch/x86/mm/fault.c:1507 [inline]
 exc_page_fault+0x484/0x860 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f79e3a2c621
Code: 48 8b 54 24 08 48 85 d2 74 17 8b 44 24 18 0f c8 89 c0 48 89 44 24 18 48 83 fa 01 0f 85 b3 01 00 00 48 8b 44 24 10 8b 54 24 18 <89> 10 e9 15 fd ff ff 48 8b 44 24 10 8b 10 48 8b 44 24 08 48 85 c0
RSP: 002b:00007ffdb86ef570 EFLAGS: 00010246
RAX: 0000000020000004 RBX: 0000000000000004 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055555593c360
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffdb86ef6e0 R11: 0000000000000246 R12: 00007f79e3600128
R13: fffffffffffffffe R14: 00007f79e3600000 R15: 00007f79e3600130
 </TASK>

Allocated by task 4953:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3813 [inline]
 slab_alloc_node mm/slub.c:3860 [inline]
 kmem_cache_alloc+0x15a/0x390 mm/slub.c:3867
 vm_area_alloc+0x1f/0x1c0 kernel/fork.c:465
 mmap_region+0xa35/0x1a20 mm/mmap.c:2799
 do_mmap+0x6f2/0xbd0 mm/mmap.c:1377
 vm_mmap_pgoff+0x21a/0x3a0 mm/util.c:556
 ksys_mmap_pgoff+0x314/0x3c0 mm/mmap.c:1423
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x94/0x170 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77

Freed by task 15:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:589
 poison_slab_object+0xee/0x1a0 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2121 [inline]
 slab_free mm/slub.c:4299 [inline]
 kmem_cache_free+0x136/0x330 mm/slub.c:4363
 rcu_do_batch kernel/rcu/tree.c:2190 [inline]
 rcu_core+0xc4b/0x1470 kernel/rcu/tree.c:2465
 __do_softirq+0x1be/0x586 kernel/softirq.c:553

Last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:551
 __call_rcu_common kernel/rcu/tree.c:2715 [inline]
 call_rcu+0x159/0x8e0 kernel/rcu/tree.c:2829
 remove_vma mm/mmap.c:148 [inline]
 remove_mt mm/mmap.c:2281 [inline]
 do_vmi_align_munmap+0xe35/0x14b0 mm/mmap.c:2624
 do_vmi_munmap+0x1b5/0x210 mm/mmap.c:2688
 mmap_region+0x63a/0x1a20 mm/mmap.c:2739
 do_mmap+0x6f2/0xbd0 mm/mmap.c:1377
 vm_mmap_pgoff+0x21a/0x3a0 mm/util.c:556
 ksys_mmap_pgoff+0x314/0x3c0 mm/mmap.c:1423
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x94/0x170 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77

The buggy address belongs to the object at ffff8880783fa000
 which belongs to the cache vm_area_struct of size 176
The buggy address is located 32 bytes inside of
 freed 176-byte region [ffff8880783fa000, ffff8880783fa0b0)

The buggy address belongs to the physical page:
page:ffffea0001e0fe80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x783fa
memcg:ffff88801459a301
anon flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000800 ffff88800a2e4b40 ffffea0001e08480 dead000000000003
raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801459a301
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1748, tgid 1748 (modprobe), ts 30274777986, free_ts 23443043961
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x10f/0x130 mm/page_alloc.c:1533
 prep_new_page mm/page_alloc.c:1540 [inline]
 get_page_from_freelist+0x345c/0x3600 mm/page_alloc.c:3311
 __alloc_pages+0x255/0x650 mm/page_alloc.c:4567
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 alloc_slab_page+0x5f/0x160 mm/slub.c:2190
 allocate_slab mm/slub.c:2354 [inline]
 new_slab+0x70/0x270 mm/slub.c:2407
 ___slab_alloc+0xa79/0x10b0 mm/slub.c:3540
 __slab_alloc mm/slub.c:3625 [inline]
 __slab_alloc_node mm/slub.c:3678 [inline]
 slab_alloc_node mm/slub.c:3850 [inline]
 kmem_cache_alloc+0x235/0x390 mm/slub.c:3867
 vm_area_dup+0x21/0x160 kernel/fork.c:480
 __split_vma+0xfe/0xb10 mm/mmap.c:2331
 do_vmi_align_munmap+0x3ba/0x14b0 mm/mmap.c:2542
 do_vmi_munmap+0x1b5/0x210 mm/mmap.c:2688
 mmap_region+0x63a/0x1a20 mm/mmap.c:2739
 do_mmap+0x6f2/0xbd0 mm/mmap.c:1377
 vm_mmap_pgoff+0x21a/0x3a0 mm/util.c:556
 ksys_mmap_pgoff+0x2d9/0x3c0 mm/mmap.c:1423
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x94/0x170 arch/x86/entry/common.c:83
page last free pid 1716 tgid 1716 stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1140 [inline]
 free_unref_page_prepare+0x7e5/0x900 mm/page_alloc.c:2346
 free_unref_page+0x37/0x3a0 mm/page_alloc.c:2486
 pipe_buf_release include/linux/pipe_fs_i.h:219 [inline]
 pipe_update_tail fs/pipe.c:234 [inline]
 pipe_read+0x4fc/0xdd0 fs/pipe.c:354
 call_read_iter include/linux/fs.h:2079 [inline]
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x84f/0xb10 fs/read_write.c:476
 ksys_read+0x163/0x250 fs/read_write.c:619
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x94/0x170 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77

Memory state around the buggy address:
 ffff8880783f9f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8880783f9f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8880783fa000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                               ^
 ffff8880783fa080: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb
 ffff8880783fa100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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