ntfs3: loop0: Different NTFS sector size (2048) and media sector size (512). ntfs3: loop0: NTFS 0.00 Gb is too big to use 32 bits per cluster. ================================================================== BUG: KASAN: use-after-free in memcmp+0x173/0x1c0 lib/string.c:681 Read of size 8 at addr ffff88803511b002 by task syz-executor138/5143 CPU: 0 PID: 5143 Comm: syz-executor138 Not tainted 6.5.0-rc1-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Call Trace: __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:364 print_report mm/kasan/report.c:475 [inline] kasan_report+0x11d/0x130 mm/kasan/report.c:588 memcmp+0x173/0x1c0 lib/string.c:681 memcmp include/linux/fortify-string.h:728 [inline] ntfs_init_from_boot fs/ntfs3/super.c:860 [inline] ntfs_fill_super+0x7fc/0x4240 fs/ntfs3/super.c:1141 get_tree_bdev+0x43e/0x7d0 fs/super.c:1318 vfs_get_tree+0x8d/0x350 fs/super.c:1519 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x136e/0x1e70 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __x64_sys_mount+0x283/0x300 fs/namespace.c:3861 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: 0033:0x7fd4e39845fa 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:00007ffea0a557e8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd4e39845fa RDX: 0000000020000180 RSI: 0000000020000040 RDI: 00007ffea0a55800 RBP: 00007ffea0a55800 R08: 00007ffea0a55840 R09: 0000000000000000 R10: 0000000001000018 R11: 0000000000000286 R12: 0000000000000004 R13: 00005555556e42c0 R14: 0000000001000018 R15: 00007ffea0a55840 The buggy address belongs to the physical page: page:ffffea0000d446c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x3511b flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 ffffea0000d44708 ffffe8fefd6023a0 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 5143, tgid 5143 (syz-executor138), ts 36518976292, free_ts 36543966194 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2db/0x350 mm/page_alloc.c:1570 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0xfed/0x2d30 mm/page_alloc.c:3221 __alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:4477 __folio_alloc+0x16/0x40 mm/page_alloc.c:4509 vma_alloc_folio+0x155/0x890 mm/mempolicy.c:2240 do_anonymous_page mm/memory.c:4104 [inline] do_pte_missing mm/memory.c:3662 [inline] handle_pte_fault mm/memory.c:4939 [inline] __handle_mm_fault+0x2072/0x3c50 mm/memory.c:5079 handle_mm_fault+0x2a7/0x9e0 mm/memory.c:5233 do_user_addr_fault+0x2dc/0x1360 arch/x86/mm/fault.c:1343 handle_page_fault arch/x86/mm/fault.c:1486 [inline] exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1542 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:1161 [inline] free_unref_page_prepare+0x62e/0xcb0 mm/page_alloc.c:2348 free_unref_page_list+0xe3/0xa70 mm/page_alloc.c:2489 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:2317 do_vmi_align_munmap+0xdf9/0x1690 mm/mmap.c:2556 do_vmi_munmap+0x266/0x430 mm/mmap.c:2623 __vm_munmap+0x137/0x380 mm/mmap.c:2905 __do_sys_munmap mm/mmap.c:2922 [inline] __se_sys_munmap mm/mmap.c:2919 [inline] __x64_sys_munmap+0x62/0x80 mm/mmap.c:2919 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: ffff88803511af00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88803511af80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88803511b000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88803511b080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88803511b100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================