ntfs3: loop5: NTFS 8192.00 Gb is too big to use 32 bits per cluster. ================================================================== BUG: KASAN: use-after-free in memcmp+0x172/0x1c0 lib/string.c:681 Read of size 8 at addr ffff88803d858002 by task syz-executor.5/10767 CPU: 1 PID: 10767 Comm: syz-executor.5 Not tainted 6.5.0-rc3-syzkaller-00044-g0a8db05b571a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 memcmp+0x172/0x1c0 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+0x6e0/0x43b0 fs/ntfs3/super.c:1141 get_tree_bdev+0x43e/0x7d0 fs/super.c:1318 vfs_get_tree+0x88/0x350 fs/super.c:1519 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 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+0x293/0x310 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7efe5447e22a 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:00007efe5513aee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007efe5513af80 RCX: 00007efe5447e22a RDX: 0000000020000180 RSI: 0000000020000000 RDI: 00007efe5513af40 RBP: 0000000020000180 R08: 00007efe5513af80 R09: 0000000000000800 R10: 0000000000000800 R11: 0000000000000202 R12: 0000000020000000 R13: 00007efe5513af40 R14: 000000000001f43b R15: 0000000020000100 The buggy address belongs to the physical page: page:ffffea0000f61600 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x3d858 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 ffffea0000f6f308 ffffea0000406a88 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 10767, tgid 10764 (syz-executor.5), ts 498931264827, free_ts 499058533842 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1570 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0x10a9/0x31e0 mm/page_alloc.c:3221 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4477 __folio_alloc+0x16/0x40 mm/page_alloc.c:4509 vma_alloc_folio+0x156/0x890 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+0x12a8/0x3b80 mm/memory.c:5079 handle_mm_fault+0x2ab/0x9d0 mm/memory.c:5233 do_user_addr_fault+0x2e7/0xfc0 arch/x86/mm/fault.c:1343 handle_page_fault arch/x86/mm/fault.c:1486 [inline] exc_page_fault+0x5c/0xd0 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+0x508/0xb90 mm/page_alloc.c:2348 free_unref_page_list+0xe6/0xb30 mm/page_alloc.c:2489 release_pages+0x32a/0x14e0 mm/swap.c:1042 tlb_batch_pages_flush+0x9a/0x190 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+0x244/0x2e0 mm/mmap.c:2317 do_vmi_align_munmap+0xe8e/0x1720 mm/mmap.c:2556 do_vmi_munmap+0x20e/0x450 mm/mmap.c:2623 __vm_munmap+0x144/0x390 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+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88803d857f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88803d857f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88803d858000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88803d858080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88803d858100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== ================================================================== BUG: KASAN: use-after-free in memcmp+0x1a3/0x1c0 lib/string.c:692 Read of size 1 at addr ffff88803d858002 by task syz-executor.5/10767 CPU: 0 PID: 10767 Comm: syz-executor.5 Tainted: G B 6.5.0-rc3-syzkaller-00044-g0a8db05b571a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 memcmp+0x1a3/0x1c0 lib/string.c:692 memcmp include/linux/fortify-string.h:728 [inline] ntfs_init_from_boot fs/ntfs3/super.c:860 [inline] ntfs_fill_super+0x6e0/0x43b0 fs/ntfs3/super.c:1141 get_tree_bdev+0x43e/0x7d0 fs/super.c:1318 vfs_get_tree+0x88/0x350 fs/super.c:1519 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 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+0x293/0x310 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7efe5447e22a 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:00007efe5513aee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007efe5513af80 RCX: 00007efe5447e22a RDX: 0000000020000180 RSI: 0000000020000000 RDI: 00007efe5513af40 RBP: 0000000020000180 R08: 00007efe5513af80 R09: 0000000000000800 R10: 0000000000000800 R11: 0000000000000202 R12: 0000000020000000 R13: 00007efe5513af40 R14: 000000000001f43b R15: 0000000020000100 The buggy address belongs to the physical page: page:ffffea0000f61600 refcount:0 mapcount:-128 mapping:0000000000000000 index:0x1 pfn:0x3d858 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffff7f(buddy) raw: 00fff00000000000 ffffea0000406a88 ffffea0000f6f308 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffff7f 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 10767, tgid 10764 (syz-executor.5), ts 498931264827, free_ts 499058533842 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1570 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0x10a9/0x31e0 mm/page_alloc.c:3221 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4477 __folio_alloc+0x16/0x40 mm/page_alloc.c:4509 vma_alloc_folio+0x156/0x890 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+0x12a8/0x3b80 mm/memory.c:5079 handle_mm_fault+0x2ab/0x9d0 mm/memory.c:5233 do_user_addr_fault+0x2e7/0xfc0 arch/x86/mm/fault.c:1343 handle_page_fault arch/x86/mm/fault.c:1486 [inline] exc_page_fault+0x5c/0xd0 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+0x508/0xb90 mm/page_alloc.c:2348 free_unref_page_list+0xe6/0xb30 mm/page_alloc.c:2489 release_pages+0x32a/0x14e0 mm/swap.c:1042 tlb_batch_pages_flush+0x9a/0x190 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+0x244/0x2e0 mm/mmap.c:2317 do_vmi_align_munmap+0xe8e/0x1720 mm/mmap.c:2556 do_vmi_munmap+0x20e/0x450 mm/mmap.c:2623 __vm_munmap+0x144/0x390 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+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88803d857f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88803d857f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88803d858000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88803d858080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88803d858100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== ntfs3: loop5: Alternative boot signature is not NTFS.