ntfs3: loop4: Different NTFS sector size (4096) and media sector size (512). ntfs3: loop4: RAW NTFS volume: Filesystem size 16384.00 Gb > volume size 0.00 Gb. Mount in read-only. ntfs3: loop4: 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 ffff88802ab8f002 by task syz-executor.4/9889 CPU: 0 PID: 9889 Comm: syz-executor.4 Not tainted 6.6.0-rc5-syzkaller-00067-g8182d7a3f1b8 #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: 0033:0x7f8ef247e1ea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8ef3294ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f8ef3294f80 RCX: 00007f8ef247e1ea RDX: 000000002001f180 RSI: 00000000200000c0 RDI: 00007f8ef3294f40 RBP: 000000002001f180 R08: 00007f8ef3294f80 R09: 000000000000000e R10: 000000000000000e R11: 0000000000000202 R12: 00000000200000c0 R13: 00007f8ef3294f40 R14: 000000000001f18b R15: 0000000020000000 The buggy address belongs to the physical page: page:ffffea0000aae3c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x2ab8f flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 ffffea000109ba48 ffffea000116a188 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 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 9892, tgid 9892 (syz-executor.1), ts 562516586013, free_ts 562587618273 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:2258 wp_page_copy mm/memory.c:3074 [inline] do_wp_page+0x1456/0x4190 mm/memory.c:3449 handle_pte_fault mm/memory.c:4994 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0x1b45/0x62b0 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 exit_mmap+0x4d3/0xc50 mm/mmap.c:3223 __mmput+0x115/0x3c0 kernel/fork.c:1349 exit_mm+0x21f/0x300 kernel/exit.c:567 do_exit+0x9af/0x2650 kernel/exit.c:861 do_group_exit+0x206/0x2c0 kernel/exit.c:1024 get_signal+0x175d/0x1840 kernel/signal.c:2892 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 Memory state around the buggy address: ffff88802ab8ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802ab8ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88802ab8f000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88802ab8f080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88802ab8f100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================