ntfs3: loop4: Failed to load $Extend.
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BUG: KASAN: use-after-free in hdr_find_e+0x255/0x580 fs/ntfs3/index.c:689
Read of size 2 at addr ffff888082545820 by task syz-executor.4/12859

CPU: 0 PID: 12859 Comm: syz-executor.4 Not tainted 6.1.0-rc4-syzkaller-00011-g59f2f4b8a757 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
 print_address_description+0x74/0x340 mm/kasan/report.c:284
 print_report+0x107/0x1f0 mm/kasan/report.c:395
 kasan_report+0xcd/0x100 mm/kasan/report.c:495
 hdr_find_e+0x255/0x580 fs/ntfs3/index.c:689
 indx_find+0x4ff/0xb20 fs/ntfs3/index.c:1085
 dir_search_u+0x161/0x320 fs/ntfs3/dir.c:254
 ntfs_lookup+0x112/0x1b0 fs/ntfs3/namei.c:83
 lookup_open fs/namei.c:3391 [inline]
 open_last_lookups fs/namei.c:3481 [inline]
 path_openat+0x10e6/0x2df0 fs/namei.c:3710
 do_filp_open+0x264/0x4f0 fs/namei.c:3740
 do_sys_openat2+0x124/0x4e0 fs/open.c:1310
 do_sys_open fs/open.c:1326 [inline]
 __do_sys_open fs/open.c:1334 [inline]
 __se_sys_open fs/open.c:1330 [inline]
 __x64_sys_open+0x221/0x270 fs/open.c:1330
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb1d188b639
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb1d0bff168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fb1d19abf80 RCX: 00007fb1d188b639
RDX: 0000000000000000 RSI: 0000000000141a42 RDI: 0000000020000a40
RBP: 00007fb1d18e67e1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc0ae7367f R14: 00007fb1d0bff300 R15: 0000000000022000
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0002095140 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x82545
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 ffffea0002095148 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 6421, tgid 6421 (kworker/1:14), ts 307355555335, free_ts 333163116098
 prep_new_page mm/page_alloc.c:2539 [inline]
 get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4288
 __alloc_pages+0x259/0x560 mm/page_alloc.c:5555
 alloc_slab_page+0x70/0xf0 mm/slub.c:1794
 allocate_slab+0x5e/0x4b0 mm/slub.c:1939
 new_slab mm/slub.c:1992 [inline]
 ___slab_alloc+0x782/0xe20 mm/slub.c:3180
 __slab_alloc mm/slub.c:3279 [inline]
 slab_alloc_node mm/slub.c:3364 [inline]
 __kmem_cache_alloc_node+0x252/0x310 mm/slub.c:3437
 __do_kmalloc_node mm/slab_common.c:954 [inline]
 __kmalloc_node_track_caller+0x9c/0x1a0 mm/slab_common.c:975
 kmalloc_reserve net/core/skbuff.c:437 [inline]
 __alloc_skb+0x112/0x2b0 net/core/skbuff.c:509
 alloc_skb include/linux/skbuff.h:1267 [inline]
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:751 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:808 [inline]
 nsim_dev_trap_report_work+0x268/0xaa0 drivers/net/netdevsim/dev.c:853
 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1459 [inline]
 free_pcp_prepare+0x80c/0x8f0 mm/page_alloc.c:1509
 free_unref_page_prepare mm/page_alloc.c:3387 [inline]
 free_unref_page+0x7d/0x5f0 mm/page_alloc.c:3483
 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x169/0x180 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slab.h:737 [inline]
 kmem_cache_alloc_bulk+0x42d/0x570 mm/slub.c:3854
 mt_alloc_bulk lib/maple_tree.c:157 [inline]
 mas_alloc_nodes+0x386/0x650 lib/maple_tree.c:1256
 mas_node_count_gfp lib/maple_tree.c:1316 [inline]
 mas_preallocate+0x133/0x340 lib/maple_tree.c:5719
 do_mas_align_munmap+0x217/0x1240 mm/mmap.c:2314
 do_mas_munmap+0x245/0x2b0 mm/mmap.c:2502
 __vm_munmap+0x23c/0x340 mm/mmap.c:2775
 __do_sys_munmap mm/mmap.c:2800 [inline]
 __se_sys_munmap mm/mmap.c:2797 [inline]
 __x64_sys_munmap+0x5c/0x70 mm/mmap.c:2797
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff888082545700: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888082545780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888082545800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                               ^
 ffff888082545880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888082545900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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