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+0x172/0x1c0 lib/string.c:681 Read of size 8 at addr ffff8880900e7002 by task syz-executor.4/10684 CPU: 1 PID: 10684 Comm: syz-executor.4 Not tainted 6.5.0-next-20230831-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 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:854 [inline] ntfs_fill_super+0x6f2/0x4330 fs/ntfs3/super.c:1135 get_tree_bdev+0x390/0x630 fs/super.c:1551 vfs_get_tree+0x8c/0x370 fs/super.c:1724 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: 0033:0x7fef1007e1ea 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:00007fef10e5cee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fef10e5cf80 RCX: 00007fef1007e1ea RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 00007fef10e5cf40 RBP: 00000000200000c0 R08: 00007fef10e5cf80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000080 R13: 00007fef10e5cf40 R14: 000000000001f1be R15: 0000000020000300 The buggy address belongs to the physical page: page:ffffea00024039c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x900e7 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 ffffea000240ad88 ffffea00023ed808 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 10556, tgid 10555 (syz-executor.1), ts 595038816206, free_ts 596154481820 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1530 prep_new_page mm/page_alloc.c:1537 [inline] get_page_from_freelist+0xf17/0x2e50 mm/page_alloc.c:3200 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4456 __folio_alloc+0x16/0x40 mm/page_alloc.c:4488 vma_alloc_folio+0x156/0x890 mm/mempolicy.c:2259 shmem_alloc_folio+0xb5/0x170 mm/shmem.c:1675 shmem_alloc_and_acct_folio+0xcb/0x140 mm/shmem.c:1700 shmem_get_folio_gfp+0xbe9/0x1890 mm/shmem.c:2037 shmem_get_folio mm/shmem.c:2160 [inline] shmem_write_begin+0x15c/0x460 mm/shmem.c:2705 generic_perform_write+0x278/0x600 mm/filemap.c:3945 shmem_file_write_iter+0x110/0x140 mm/shmem.c:2882 call_write_iter include/linux/fs.h:1985 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x650/0xe40 fs/read_write.c:584 ksys_write+0x12f/0x250 fs/read_write.c:637 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 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1130 [inline] free_unref_page_prepare+0x476/0xa40 mm/page_alloc.c:2342 free_unref_page_list+0xe6/0xb30 mm/page_alloc.c:2481 release_pages+0x32a/0x14e0 mm/swap.c:1042 __folio_batch_release+0x77/0xe0 mm/swap.c:1062 folio_batch_release include/linux/pagevec.h:83 [inline] shmem_undo_range+0x582/0x1150 mm/shmem.c:1022 shmem_truncate_range mm/shmem.c:1131 [inline] shmem_evict_inode+0x392/0xb50 mm/shmem.c:1260 evict+0x2ed/0x6b0 fs/inode.c:664 iput_final fs/inode.c:1775 [inline] iput.part.0+0x55e/0x7a0 fs/inode.c:1801 iput+0x5c/0x80 fs/inode.c:1791 dentry_unlink_inode+0x292/0x430 fs/dcache.c:401 __dentry_kill+0x3b8/0x640 fs/dcache.c:607 dentry_kill fs/dcache.c:733 [inline] dput+0x8dd/0xfd0 fs/dcache.c:913 __fput+0x536/0xa70 fs/file_table.c:392 __fput_sync+0x47/0x50 fs/file_table.c:465 __do_sys_close fs/open.c:1572 [inline] __se_sys_close fs/open.c:1557 [inline] __x64_sys_close+0x87/0xf0 fs/open.c:1557 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 Memory state around the buggy address: ffff8880900e6f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880900e6f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880900e7000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff8880900e7080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff8880900e7100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================