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+0xeaa/0x2b80 fs/ntfs/dir.c:1200 Read of size 1 at addr ffff888029709471 by task syz-executor.4/22676 CPU: 1 PID: 22676 Comm: syz-executor.4 Not tainted 6.7.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0x163/0x540 mm/kasan/report.c:475 kasan_report+0x142/0x170 mm/kasan/report.c:588 ntfs_filldir fs/ntfs/dir.c:1021 [inline] ntfs_readdir+0xeaa/0x2b80 fs/ntfs/dir.c:1200 wrap_directory_iterator+0x91/0xd0 fs/readdir.c:67 iterate_dir+0x1cd/0x540 fs/readdir.c:106 __do_sys_getdents64 fs/readdir.c:405 [inline] __se_sys_getdents64+0x20d/0x4f0 fs/readdir.c:390 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7ff2de87cce9 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:00007ff2df5e80c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007ff2de99bf80 RCX: 00007ff2de87cce9 RDX: 00000000000000c9 RSI: 0000000020000140 RDI: 0000000000000006 RBP: 00007ff2de8c947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ff2de99bf80 R15: 00007ffc0df96148 Allocated by task 22676: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:198 [inline] __do_kmalloc_node mm/slab_common.c:1007 [inline] __kmalloc+0xb3/0x1a0 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] ntfs_readdir+0x832/0x2b80 fs/ntfs/dir.c:1162 wrap_directory_iterator+0x91/0xd0 fs/readdir.c:67 iterate_dir+0x1cd/0x540 fs/readdir.c:106 __do_sys_getdents64 fs/readdir.c:405 [inline] __se_sys_getdents64+0x20d/0x4f0 fs/readdir.c:390 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xad/0xc0 mm/kasan/generic.c:492 kvfree_call_rcu+0xfc/0x790 kernel/rcu/tree.c:3400 sctp_inet6addr_event+0x68f/0x720 net/sctp/ipv6.c:115 notifier_call_chain+0x18c/0x3b0 kernel/notifier.c:93 atomic_notifier_call_chain+0xdb/0x180 kernel/notifier.c:231 addrconf_ifdown+0xef7/0x1bc0 net/ipv6/addrconf.c:3929 addrconf_notify+0x3ce/0x1030 notifier_call_chain+0x18c/0x3b0 kernel/notifier.c:93 call_netdevice_notifiers_extack net/core/dev.c:2005 [inline] call_netdevice_notifiers net/core/dev.c:2019 [inline] dev_close_many+0x336/0x4b0 net/core/dev.c:1560 unregister_netdevice_many_notify+0x522/0x1730 net/core/dev.c:11016 unregister_netdevice_many net/core/dev.c:11099 [inline] default_device_exit_batch+0x5c8/0x640 net/core/dev.c:11568 ops_exit_list net/core/net_namespace.c:175 [inline] cleanup_net+0x767/0xb80 net/core/net_namespace.c:614 process_one_work kernel/workqueue.c:2627 [inline] process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2700 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2781 kthread+0x2d3/0x370 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 The buggy address belongs to the object at ffff888029709400 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 57 bytes to the right of allocated 56-byte region [ffff888029709400, ffff888029709438) The buggy address belongs to the physical page: page:ffffea0000a5c240 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x29709 anon flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000800 ffff888012c41640 0000000000000000 dead000000000001 raw: ffff888029709700 000000008020001f 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 5207, tgid 5206 (syz-executor.3), ts 203305045884, free_ts 203211999851 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1544 [inline] get_page_from_freelist+0x33ea/0x3570 mm/page_alloc.c:3312 __alloc_pages+0x255/0x680 mm/page_alloc.c:4568 alloc_pages_mpol+0x3de/0x640 mm/mempolicy.c:2133 alloc_slab_page+0x6a/0x170 mm/slub.c:1870 allocate_slab mm/slub.c:2017 [inline] new_slab+0x84/0x2f0 mm/slub.c:2070 ___slab_alloc+0xc8a/0x1330 mm/slub.c:3223 __slab_alloc mm/slub.c:3322 [inline] __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] __kmem_cache_alloc_node+0x21d/0x300 mm/slub.c:3517 kmalloc_trace+0x2a/0x60 mm/slab_common.c:1098 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:721 [inline] alloc_workqueue_attrs kernel/workqueue.c:3726 [inline] apply_wqattrs_prepare+0x132/0xea0 kernel/workqueue.c:4346 apply_workqueue_attrs_locked+0xd8/0x2c0 kernel/workqueue.c:4441 apply_workqueue_attrs kernel/workqueue.c:4477 [inline] alloc_and_link_pwqs kernel/workqueue.c:4590 [inline] alloc_workqueue+0xf20/0x1590 kernel/workqueue.c:4721 __ext4_fill_super fs/ext4/super.c:5470 [inline] ext4_fill_super+0x5537/0x6d90 fs/ext4/super.c:5712 get_tree_bdev+0x416/0x5b0 fs/super.c:1598 vfs_get_tree+0x8c/0x2a0 fs/super.c:1771 do_new_mount+0x28f/0xae0 fs/namespace.c:3337 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare+0x931/0xa60 mm/page_alloc.c:2347 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2487 __slab_free+0x2f6/0x390 mm/slub.c:3715 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x75/0xe0 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook+0x6c/0x3c0 mm/slab.h:763 slab_alloc_node mm/slub.c:3478 [inline] __kmem_cache_alloc_node+0x1d0/0x300 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc+0xa2/0x1a0 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] tomoyo_realpath_from_path+0xcf/0x5e0 security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_number_perm+0x23a/0x870 security/tomoyo/file.c:723 security_file_ioctl+0x71/0xa0 security/security.c:2647 __do_sys_ioctl fs/ioctl.c:865 [inline] __se_sys_ioctl+0x47/0x170 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Memory state around the buggy address: ffff888029709300: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff888029709380: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff888029709400: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc ^ ffff888029709480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff888029709500: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================