ntfs3: loop0: RAW NTFS volume: Filesystem size 16384.00 Gb > volume size 0.00 Gb. Mount in read-only. ntfs3: loop0: NTFS 16384.00 Gb is too big to use 32 bits per cluster. ================================================================== BUG: KASAN: use-after-free in memcmp lib/string.c:681 [inline] BUG: KASAN: use-after-free in bcmp+0xc0/0x1e0 lib/string.c:713 Read of size 8 at addr ffff88807f7cb002 by task syz-executor327/5031 CPU: 1 PID: 5031 Comm: syz-executor327 Not tainted 6.6.0-rc3-syzkaller-00055-g9ed22ae6be81 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0x163/0x540 mm/kasan/report.c:475 kasan_report+0x175/0x1b0 mm/kasan/report.c:588 memcmp lib/string.c:681 [inline] bcmp+0xc0/0x1e0 lib/string.c:713 ntfs_init_from_boot fs/ntfs3/super.c:858 [inline] ntfs_fill_super+0x9c2/0x4c50 fs/ntfs3/super.c:1139 get_tree_bdev+0x416/0x5b0 fs/super.c:1577 vfs_get_tree+0x8c/0x280 fs/super.c:1750 do_new_mount+0x28f/0xae0 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f04d4841c1a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007ffe6d0d7298 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffe6d0d72b0 RCX: 00007f04d4841c1a RDX: 000000002001f180 RSI: 000000002001f1c0 RDI: 00007ffe6d0d72b0 RBP: 0000000000000004 R08: 00007ffe6d0d72f0 R09: 000000000001f17a R10: 000000000000000e R11: 0000000000000286 R12: 000000000000000e R13: 00007ffe6d0d72f0 R14: 0000000000000003 R15: 0000000000200000 The buggy address belongs to the physical page: page:ffffea0001fdf2c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x7f7cb flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 ffffea0001fdf308 ffff8880b9942220 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 5031, tgid 5031 (syz-executor327), ts 73347469618, free_ts 73380766869 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536 prep_new_page mm/page_alloc.c:1543 [inline] get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170 __alloc_pages+0x255/0x670 mm/page_alloc.c:4426 __folio_alloc+0x13/0x30 mm/page_alloc.c:4458 vma_alloc_folio+0x48a/0x9a0 mm/mempolicy.c:2259 do_anonymous_page mm/memory.c:4110 [inline] do_pte_missing mm/memory.c:3667 [inline] handle_pte_fault mm/memory.c:4978 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0x2376/0x62b0 mm/memory.c:5284 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x455/0x860 arch/x86/mm/fault.c:1561 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:1136 [inline] free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312 free_unref_page_list+0x596/0x830 mm/page_alloc.c:2451 release_pages+0x2113/0x23f0 mm/swap.c:1042 tlb_batch_pages_flush mm/mmu_gather.c:98 [inline] tlb_flush_mmu_free mm/mmu_gather.c:293 [inline] tlb_flush_mmu+0x34c/0x4e0 mm/mmu_gather.c:300 tlb_finish_mmu+0xd4/0x1f0 mm/mmu_gather.c:392 unmap_region+0x300/0x350 mm/mmap.c:2318 do_vmi_align_munmap+0x121e/0x1850 mm/mmap.c:2555 do_vmi_munmap+0x24d/0x2d0 mm/mmap.c:2623 __vm_munmap+0x230/0x450 mm/mmap.c:2908 __do_sys_munmap mm/mmap.c:2925 [inline] __se_sys_munmap mm/mmap.c:2922 [inline] __x64_sys_munmap+0x69/0x80 mm/mmap.c:2922 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88807f7caf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88807f7caf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88807f7cb000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88807f7cb080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88807f7cb100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================