loop0: rw=0, sector=32768, nr_sectors = 2 limit=4096
syz-executor466: attempt to access beyond end of device
loop0: rw=0, sector=32770, nr_sectors = 2 limit=4096
==================================================================
BUG: KASAN: use-after-free in ntfs_attr_find+0xa5e/0xba0 fs/ntfs/attrib.c:609
Read of size 2 at addr ffff88807394b152 by task syz-executor466/5001
CPU: 1 PID: 5001 Comm: syz-executor466 Not tainted 6.4.0-rc2-syzkaller-00338-ge2065b8c1b01 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:351
print_report mm/kasan/report.c:462 [inline]
kasan_report+0x11c/0x130 mm/kasan/report.c:572
ntfs_attr_find+0xa5e/0xba0 fs/ntfs/attrib.c:609
ntfs_attr_lookup+0x105a/0x2070 fs/ntfs/attrib.c:1213
ntfs_read_locked_attr_inode fs/ntfs/inode.c:1239 [inline]
ntfs_attr_iget+0x656/0x26f0 fs/ntfs/inode.c:238
load_system_files fs/ntfs/super.c:1808 [inline]
ntfs_fill_super+0x28ab/0x93f0 fs/ntfs/super.c:2900
mount_bdev+0x357/0x420 fs/super.c:1380
legacy_get_tree+0x109/0x220 fs/fs_context.c:610
vfs_get_tree+0x8d/0x350 fs/super.c:1510
do_new_mount fs/namespace.c:3039 [inline]
path_mount+0x134b/0x1e40 fs/namespace.c:3369
do_mount fs/namespace.c:3382 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount fs/namespace.c:3568 [inline]
__x64_sys_mount+0x283/0x300 fs/namespace.c:3568
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd7c9d9c5da
Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe7f085bd8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd7c9d9c5da
RDX: 000000002001f6c0 RSI: 000000002001f640 RDI: 00007ffe7f085be0
RBP: 00007ffe7f085be0 R08: 00007ffe7f085c20 R09: 0000000000000000
R10: 0000000000008703 R11: 0000000000000286 R12: 0000000000000004
R13: 00005555565292c0 R14: 00007ffe7f085c20 R15: 0000000000000000
</TASK>
The buggy address belongs to the physical page:
page:ffffea0001ce52c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x7394b
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 ffffea0001ce5308 ffffea0001ce2648 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 5001, tgid 5001 (syz-executor466), ts 40333644051, free_ts 40344094319
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2db/0x350 mm/page_alloc.c:1731
prep_new_page mm/page_alloc.c:1738 [inline]
get_page_from_freelist+0xf41/0x2c00 mm/page_alloc.c:3502
__alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:4768
__folio_alloc+0x16/0x40 mm/page_alloc.c:4800
vma_alloc_folio+0x155/0x890 mm/mempolicy.c:2240
do_anonymous_page mm/memory.c:4085 [inline]
do_pte_missing mm/memory.c:3645 [inline]
handle_pte_fault mm/memory.c:4947 [inline]
__handle_mm_fault+0x224c/0x41c0 mm/memory.c:5089
handle_mm_fault+0x2af/0x9f0 mm/memory.c:5243
do_user_addr_fault+0x2ca/0x1210 arch/x86/mm/fault.c:1349
handle_page_fault arch/x86/mm/fault.c:1534 [inline]
exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1590
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1302 [inline]
free_unref_page_prepare+0x62e/0xcb0 mm/page_alloc.c:2564
free_unref_page_list+0xe3/0xa70 mm/page_alloc.c:2705
release_pages+0xcd8/0x1380 mm/swap.c:1042
tlb_batch_pages_flush+0xa8/0x1a0 mm/mmu_gather.c:97
tlb_flush_mmu_free mm/mmu_gather.c:292 [inline]
tlb_flush_mmu mm/mmu_gather.c:299 [inline]
tlb_finish_mmu+0x14b/0x7e0 mm/mmu_gather.c:391
unmap_region+0x23d/0x2d0 mm/mmap.c:2222
do_vmi_align_munmap+0xe26/0x1580 mm/mmap.c:2473
do_vmi_munmap+0x26e/0x2c0 mm/mmap.c:2530
__vm_munmap+0x133/0x3b0 mm/mmap.c:2805
__do_sys_munmap mm/mmap.c:2830 [inline]
__se_sys_munmap mm/mmap.c:2827 [inline]
__x64_sys_munmap+0x62/0x80 mm/mmap.c:2827
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Memory state around the buggy address:
ffff88807394b000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88807394b080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88807394b100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff88807394b180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88807394b200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================