================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_filldir fs/ntfs/dir.c:1021 [inline] BUG: KASAN: slab-out-of-bounds in ntfs_readdir+0xe9d/0x2b70 fs/ntfs/dir.c:1200 Read of size 1 at addr ffff888055d70371 by task syz-executor.2/13609 CPU: 1 PID: 13609 Comm: syz-executor.2 Not tainted 6.1.83-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 mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 ntfs_filldir fs/ntfs/dir.c:1021 [inline] ntfs_readdir+0xe9d/0x2b70 fs/ntfs/dir.c:1200 iterate_dir+0x224/0x560 __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:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0d2cc7dda9 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:00007f0d2dad90c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007f0d2cdabf80 RCX: 00007f0d2cc7dda9 RDX: 0000000000000ff9 RSI: 0000000020001280 RDI: 0000000000000004 RBP: 00007f0d2ccca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0d2cdabf80 R15: 00007ffee65abb18 Allocated by task 13609: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:955 [inline] __kmalloc+0xb2/0x230 mm/slab_common.c:968 kmalloc include/linux/slab.h:561 [inline] ntfs_readdir+0x825/0x2b70 fs/ntfs/dir.c:1162 iterate_dir+0x224/0x560 __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:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486 kvfree_call_rcu+0x116/0x8c0 kernel/rcu/tree.c:3400 sctp_inet6addr_event+0x669/0x700 net/sctp/ipv6.c:115 notifier_call_chain kernel/notifier.c:87 [inline] atomic_notifier_call_chain+0x17c/0x2c0 kernel/notifier.c:225 addrconf_ifdown+0xeee/0x1b90 net/ipv6/addrconf.c:3905 addrconf_notify+0x3ec/0xf60 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:455 __dev_notify_flags+0x304/0x610 dev_change_flags+0xe7/0x190 net/core/dev.c:8661 do_setlink+0xcf4/0x3e30 net/core/rtnetlink.c:2801 rtnl_group_changelink net/core/rtnetlink.c:3329 [inline] __rtnl_newlink net/core/rtnetlink.c:3586 [inline] rtnl_newlink+0x10e6/0x2050 net/core/rtnetlink.c:3623 rtnetlink_rcv_msg+0x818/0xff0 net/core/rtnetlink.c:6121 netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2508 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1352 netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1874 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2514 ___sys_sendmsg net/socket.c:2568 [inline] __sys_sendmsg+0x2a9/0x390 net/socket.c:2597 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888055d70300 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 49 bytes to the right of 64-byte region [ffff888055d70300, ffff888055d70340) The buggy address belongs to the physical page: page:ffffea0001575c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x55d70 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000001 ffff888012441640 raw: 0000000000000000 0000000080200020 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 0x112c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 4346, tgid 4346 (udevd), ts 159889052030, free_ts 153397035842 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2513 prep_new_page mm/page_alloc.c:2520 [inline] get_page_from_freelist+0x31a1/0x3320 mm/page_alloc.c:4279 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5545 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x84/0x2d0 mm/slub.c:1992 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc+0xa1/0x230 mm/slab_common.c:968 kmalloc include/linux/slab.h:561 [inline] kzalloc include/linux/slab.h:692 [inline] tomoyo_encode2 security/tomoyo/realpath.c:45 [inline] tomoyo_encode+0x26b/0x530 security/tomoyo/realpath.c:80 tomoyo_realpath_from_path+0x594/0x5d0 security/tomoyo/realpath.c:283 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x29f/0x710 security/tomoyo/file.c:822 security_inode_getattr+0xcf/0x120 security/security.c:1361 vfs_getattr+0x26/0x360 fs/stat.c:158 vfs_statx+0x194/0x4b0 fs/stat.c:233 vfs_fstatat fs/stat.c:267 [inline] __do_sys_newfstatat fs/stat.c:437 [inline] __se_sys_newfstatat fs/stat.c:431 [inline] __x64_sys_newfstatat+0x151/0x1e0 fs/stat.c:431 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1440 [inline] free_pcp_prepare mm/page_alloc.c:1490 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3358 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3453 kasan_depopulate_vmalloc_pte+0x66/0x80 mm/kasan/shadow.c:375 apply_to_pte_range mm/memory.c:2645 [inline] apply_to_pmd_range mm/memory.c:2689 [inline] apply_to_pud_range mm/memory.c:2725 [inline] apply_to_p4d_range mm/memory.c:2761 [inline] __apply_to_page_range+0x9c5/0xcc0 mm/memory.c:2795 kasan_release_vmalloc+0x96/0xb0 mm/kasan/shadow.c:492 __purge_vmap_area_lazy+0x157c/0x1720 mm/vmalloc.c:1774 drain_vmap_area_work+0x3c/0xd0 mm/vmalloc.c:1803 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 Memory state around the buggy address: ffff888055d70200: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff888055d70280: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff888055d70300: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc ^ ffff888055d70380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff888055d70400: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================