ntfs: volume version 3.1. ================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_filldir fs/ntfs/dir.c:1021 [inline] BUG: KASAN: slab-out-of-bounds in ntfs_readdir+0xed5/0x36f0 fs/ntfs/dir.c:1200 Read of size 1 at addr ffff8880235c68f1 by task syz-executor.0/4489 CPU: 1 PID: 4489 Comm: syz-executor.0 Not tainted 5.15.153-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb 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 ntfs_filldir fs/ntfs/dir.c:1021 [inline] ntfs_readdir+0xed5/0x36f0 fs/ntfs/dir.c:1200 iterate_dir+0x224/0x570 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fc5d2d3fda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fc5d12c00c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007fc5d2e6df80 RCX: 00007fc5d2d3fda9 RDX: 0000000000000ff9 RSI: 0000000020001280 RDI: 0000000000000004 RBP: 00007fc5d2d8c47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fc5d2e6df80 R15: 00007ffd456954b8 Allocated by task 4489: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc+0x168/0x300 mm/slub.c:4407 kmalloc include/linux/slab.h:596 [inline] ntfs_readdir+0x823/0x36f0 fs/ntfs/dir.c:1162 iterate_dir+0x224/0x570 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb The buggy address belongs to the object at ffff8880235c6880 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 49 bytes to the right of 64-byte region [ffff8880235c6880, ffff8880235c68c0) The buggy address belongs to the page: page:ffffea00008d7180 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880235c6080 pfn:0x235c6 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea00004af180 0000000400000004 ffff888011c41640 raw: ffff8880235c6080 0000000080200011 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 3529, ts 57829882627, free_ts 57829796445 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159 __alloc_pages+0x272/0x700 mm/page_alloc.c:5421 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] kmem_cache_alloc_node_trace+0x1ce/0x2e0 mm/slub.c:3270 kmalloc_node include/linux/slab.h:609 [inline] kzalloc_node include/linux/slab.h:732 [inline] __get_vm_area_node+0x11f/0x2f0 mm/vmalloc.c:2416 __vmalloc_node_range+0xe3/0x8c0 mm/vmalloc.c:3019 __vmalloc_node mm/vmalloc.c:3079 [inline] vzalloc+0x75/0x80 mm/vmalloc.c:3149 alloc_counters+0xcf/0x7c0 net/ipv4/netfilter/ip_tables.c:800 copy_entries_to_user net/ipv4/netfilter/ip_tables.c:822 [inline] get_entries net/ipv4/netfilter/ip_tables.c:1023 [inline] do_ipt_get_ctl+0xead/0x1880 net/ipv4/netfilter/ip_tables.c:1661 nf_getsockopt+0x28e/0x2b0 net/netfilter/nf_sockopt.c:116 ip_getsockopt+0x15be/0x2450 net/ipv4/ip_sockglue.c:1797 tcp_getsockopt+0x25a/0x6fe0 net/ipv4/tcp.c:4304 __sys_getsockopt+0x2a6/0x550 net/socket.c:2242 __do_sys_getsockopt net/socket.c:2257 [inline] __se_sys_getsockopt net/socket.c:2254 [inline] __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2254 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 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+0x95/0x2d0 mm/page_alloc.c:3396 __vunmap+0x8d4/0xa20 mm/vmalloc.c:2621 copy_entries_to_user net/ipv4/netfilter/ip_tables.c:867 [inline] get_entries net/ipv4/netfilter/ip_tables.c:1023 [inline] do_ipt_get_ctl+0x11d4/0x1880 net/ipv4/netfilter/ip_tables.c:1661 nf_getsockopt+0x28e/0x2b0 net/netfilter/nf_sockopt.c:116 ip_getsockopt+0x15be/0x2450 net/ipv4/ip_sockglue.c:1797 tcp_getsockopt+0x25a/0x6fe0 net/ipv4/tcp.c:4304 __sys_getsockopt+0x2a6/0x550 net/socket.c:2242 __do_sys_getsockopt net/socket.c:2257 [inline] __se_sys_getsockopt net/socket.c:2254 [inline] __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2254 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Memory state around the buggy address: ffff8880235c6780: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc ffff8880235c6800: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff8880235c6880: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc ^ ffff8880235c6900: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8880235c6980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================