================================================================== BUG: KASAN: slab-use-after-free in ntfs_iget5+0x160/0x3b50 fs/ntfs3/inode.c:531 Read of size 8 at addr ffff888079844840 by task syz-executor.2/15044 CPU: 1 PID: 15044 Comm: syz-executor.2 Not tainted 6.4.0-syzkaller-01312-gb19edac5992d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 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:351 [inline] print_report+0x163/0x540 mm/kasan/report.c:462 kasan_report+0x176/0x1b0 mm/kasan/report.c:572 ntfs_iget5+0x160/0x3b50 fs/ntfs3/inode.c:531 ntfs_fill_super+0x250c/0x4530 fs/ntfs3/super.c:1057 get_tree_bdev+0x468/0x6c0 fs/super.c:1319 vfs_get_tree+0x8c/0x270 fs/super.c:1520 do_new_mount+0x28f/0xae0 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f911f08d8ba Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f911dbfdf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000001f174 RCX: 00007f911f08d8ba RDX: 000000002001f180 RSI: 000000002001f1c0 RDI: 00007f911dbfdfe0 RBP: 00007f911dbfe020 R08: 00007f911dbfe020 R09: 000000000000000e R10: 000000000000000e R11: 0000000000000202 R12: 000000002001f180 R13: 000000002001f1c0 R14: 00007f911dbfdfe0 R15: 0000000020000380 Allocated by task 13294: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:711 slab_alloc_node mm/slub.c:3451 [inline] slab_alloc mm/slub.c:3459 [inline] __kmem_cache_alloc_lru mm/slub.c:3466 [inline] kmem_cache_alloc_lru+0x11f/0x2e0 mm/slub.c:3482 alloc_inode_sb include/linux/fs.h:2730 [inline] reiserfs_alloc_inode+0x2a/0xc0 fs/reiserfs/super.c:642 alloc_inode fs/inode.c:260 [inline] new_inode_pseudo+0x65/0x1d0 fs/inode.c:1018 new_inode+0x29/0x1d0 fs/inode.c:1046 reiserfs_mkdir+0x1c0/0x8f0 fs/reiserfs/namei.c:813 xattr_mkdir fs/reiserfs/xattr.c:77 [inline] create_privroot fs/reiserfs/xattr.c:890 [inline] reiserfs_xattr_init+0x323/0x670 fs/reiserfs/xattr.c:1006 reiserfs_remount+0x12bc/0x18f0 fs/reiserfs/super.c:1586 reconfigure_super+0x43e/0x870 fs/super.c:962 do_remount fs/namespace.c:2882 [inline] path_mount+0xc24/0xfa0 fs/namespace.c:3654 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491 __call_rcu_common kernel/rcu/tree.c:2649 [inline] call_rcu+0x167/0xa70 kernel/rcu/tree.c:2763 dispose_list fs/inode.c:698 [inline] evict_inodes+0x5f8/0x690 fs/inode.c:748 generic_shutdown_super+0x98/0x340 fs/super.c:479 kill_block_super+0x68/0xa0 fs/super.c:1418 deactivate_locked_super+0xa4/0x110 fs/super.c:331 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd Second to last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:491 __call_rcu_common kernel/rcu/tree.c:2649 [inline] call_rcu+0x167/0xa70 kernel/rcu/tree.c:2763 dispose_list fs/inode.c:698 [inline] evict_inodes+0x5f8/0x690 fs/inode.c:748 generic_shutdown_super+0x98/0x340 fs/super.c:479 kill_block_super+0x68/0xa0 fs/super.c:1418 deactivate_locked_super+0xa4/0x110 fs/super.c:331 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254 task_work_run+0x24a/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888079844240 which belongs to the cache reiser_inode_cache of size 1568 The buggy address is located 1536 bytes inside of freed 1568-byte region [ffff888079844240, ffff888079844860) The buggy address belongs to the physical page: page:ffffea0001e61000 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888079842e60 pfn:0x79840 head:ffffea0001e61000 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff88807b157001 anon flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000010200 ffff888145670780 0000000000000000 0000000000000001 raw: ffff888079842e60 0000000080130003 00000001ffffffff ffff88807b157001 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d20d0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 9867, tgid 9866 (syz-executor.4), ts 519787540389, free_ts 518312681685 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1744 prep_new_page mm/page_alloc.c:1751 [inline] get_page_from_freelist+0x320e/0x3390 mm/page_alloc.c:3523 __alloc_pages+0x255/0x670 mm/page_alloc.c:4794 alloc_slab_page+0x6a/0x160 mm/slub.c:1851 allocate_slab mm/slub.c:1998 [inline] new_slab+0x84/0x2f0 mm/slub.c:2051 ___slab_alloc+0xa85/0x10a0 mm/slub.c:3192 __slab_alloc mm/slub.c:3291 [inline] __slab_alloc_node mm/slub.c:3344 [inline] slab_alloc_node mm/slub.c:3441 [inline] slab_alloc mm/slub.c:3459 [inline] __kmem_cache_alloc_lru mm/slub.c:3466 [inline] kmem_cache_alloc_lru+0x1b9/0x2e0 mm/slub.c:3482 alloc_inode_sb include/linux/fs.h:2730 [inline] reiserfs_alloc_inode+0x2a/0xc0 fs/reiserfs/super.c:642 alloc_inode fs/inode.c:260 [inline] new_inode_pseudo+0x65/0x1d0 fs/inode.c:1018 new_inode+0x29/0x1d0 fs/inode.c:1046 reiserfs_create+0x182/0x6e0 fs/reiserfs/namei.c:641 lookup_open fs/namei.c:3492 [inline] open_last_lookups fs/namei.c:3560 [inline] path_openat+0x13e7/0x3180 fs/namei.c:3790 do_filp_open+0x234/0x490 fs/namei.c:3820 do_sys_openat2+0x13a/0x520 fs/open.c:1402 do_sys_open fs/open.c:1418 [inline] __do_sys_openat fs/open.c:1434 [inline] __se_sys_openat fs/open.c:1429 [inline] __x64_sys_openat+0x247/0x290 fs/open.c:1429 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 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:1308 [inline] free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2577 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2672 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:711 slab_alloc_node mm/slub.c:3451 [inline] slab_alloc mm/slub.c:3459 [inline] __kmem_cache_alloc_lru mm/slub.c:3466 [inline] kmem_cache_alloc+0x11f/0x2e0 mm/slub.c:3475 getname_flags+0xbc/0x4e0 fs/namei.c:140 do_sys_openat2+0xd1/0x520 fs/open.c:1396 do_sys_open fs/open.c:1418 [inline] __do_sys_openat fs/open.c:1434 [inline] __se_sys_openat fs/open.c:1429 [inline] __x64_sys_openat+0x247/0x290 fs/open.c:1429 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff888079844700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888079844780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888079844800: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ^ ffff888079844880: fc fc fc fc fc fc fc fc fc fc fc fc 00 00 00 00 ffff888079844900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================