loop0: detected capacity change from 0 to 190 ================================================================== BUG: KASAN: use-after-free in ntfs_readpage+0x7fb/0x2210 fs/ntfs/aops.c:488 Read of size 1 at addr ffff888072fa817f by task syz-executor.0/4524 CPU: 1 PID: 4524 Comm: syz-executor.0 Not tainted 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189 memcpy+0x25/0x60 mm/kasan/shadow.c:65 ntfs_readpage+0x7fb/0x2210 fs/ntfs/aops.c:488 do_read_cache_page+0x752/0x1040 read_mapping_page include/linux/pagemap.h:515 [inline] ntfs_map_page+0x25/0x390 fs/ntfs/aops.h:75 load_and_init_attrdef fs/ntfs/super.c:1609 [inline] load_system_files+0x2477/0x5700 fs/ntfs/super.c:1817 ntfs_fill_super+0x1c7f/0x2e20 fs/ntfs/super.c:2894 mount_bdev+0x2c9/0x3f0 fs/super.c:1400 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x2ba/0xb40 fs/namespace.c:3012 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3540 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f3229e4a05a 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:00007f32291c9ee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f32291c9f80 RCX: 00007f3229e4a05a RDX: 0000000020000040 RSI: 000000002001f200 RDI: 00007f32291c9f40 RBP: 0000000020000040 R08: 00007f32291c9f80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000002001f200 R13: 00007f32291c9f40 R14: 000000000000097e R15: 0000000020000000 The buggy address belongs to the page: page:ffffea0001cbea00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x72fa8 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 ffffea0001cbe9c8 ffffea0001cbe908 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 0x1100dca(GFP_HIGHUSER_MOVABLE|__GFP_ZERO), pid 4163, ts 57985156885, free_ts 60004873301 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192 __alloc_pages+0x272/0x700 mm/page_alloc.c:5465 alloc_pages_vma+0x39a/0x800 mm/mempolicy.c:2146 wp_page_copy+0x221/0x2070 mm/memory.c:3049 handle_pte_fault mm/memory.c:4666 [inline] __handle_mm_fault mm/memory.c:4783 [inline] handle_mm_fault+0x2a3d/0x5960 mm/memory.c:4881 do_user_addr_fault arch/x86/mm/fault.c:1357 [inline] handle_page_fault arch/x86/mm/fault.c:1445 [inline] exc_page_fault+0x271/0x700 arch/x86/mm/fault.c:1501 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page_list+0x1f7/0x8e0 mm/page_alloc.c:3433 release_pages+0x1bb9/0x1f40 mm/swap.c:963 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:240 [inline] tlb_flush_mmu+0xc8/0x170 mm/mmu_gather.c:247 zap_pte_range mm/memory.c:1456 [inline] zap_pmd_range mm/memory.c:1505 [inline] zap_pud_range mm/memory.c:1534 [inline] zap_p4d_range mm/memory.c:1555 [inline] unmap_page_range+0x214d/0x2630 mm/memory.c:1576 unmap_vmas+0x1f8/0x390 mm/memory.c:1653 exit_mmap+0x3b6/0x620 mm/mmap.c:3204 __mmput+0x112/0x3b0 kernel/fork.c:1127 exit_mm+0x688/0x7f0 kernel/exit.c:550 do_exit+0x626/0x2480 kernel/exit.c:861 do_group_exit+0x144/0x310 kernel/exit.c:996 __do_sys_exit_group kernel/exit.c:1007 [inline] __se_sys_exit_group kernel/exit.c:1005 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Memory state around the buggy address: ffff888072fa8000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888072fa8080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff888072fa8100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888072fa8180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888072fa8200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================