================================================================== BUG: KASAN: slab-use-after-free in ntfs_iget5+0x3168/0x3810 fs/ntfs3/inode.c:535 Read of size 8 at addr ffff888034ac3b00 by task syz-executor.5/32607 CPU: 1 PID: 32607 Comm: syz-executor.5 Not tainted 6.6.0-rc7-next-20231027-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 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+0xc3/0x620 mm/kasan/report.c:475 kasan_report+0xd9/0x110 mm/kasan/report.c:588 ntfs_iget5+0x3168/0x3810 fs/ntfs3/inode.c:535 ntfs_fill_super+0x25c1/0x44a0 fs/ntfs3/super.c:1259 get_tree_bdev+0x3b5/0x650 fs/super.c:1598 vfs_get_tree+0x8c/0x370 fs/super.c:1771 do_new_mount fs/namespace.c:3337 [inline] path_mount+0x148e/0x1ed0 fs/namespace.c:3664 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount fs/namespace.c:3863 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3863 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a RIP: 0033:0x7ff35087e1ea 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:00007ff351584ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ff351584f80 RCX: 00007ff35087e1ea RDX: 0000000020000040 RSI: 0000000020000280 RDI: 00007ff351584f40 RBP: 0000000020000040 R08: 00007ff351584f80 R09: 000000000080c040 R10: 000000000080c040 R11: 0000000000000202 R12: 0000000020000280 R13: 00007ff351584f40 R14: 000000000001f75c R15: 0000000020000400 Allocated by task 21305: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x24/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:763 [inline] slab_alloc_node mm/slub.c:3478 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc_lru+0x219/0x790 mm/slub.c:3509 alloc_inode_sb include/linux/fs.h:2937 [inline] reiserfs_alloc_inode+0x26/0xb0 fs/reiserfs/super.c:642 alloc_inode+0x5d/0x220 fs/inode.c:259 new_inode_pseudo fs/inode.c:1004 [inline] new_inode+0x22/0x260 fs/inode.c:1030 reiserfs_create+0x1ee/0x760 fs/reiserfs/namei.c:641 lookup_open.isra.0+0x1092/0x13b0 fs/namei.c:3477 open_last_lookups fs/namei.c:3546 [inline] path_openat+0xa55/0x2c40 fs/namei.c:3776 do_filp_open+0x1dc/0x430 fs/namei.c:3809 do_sys_openat2+0x176/0x1e0 fs/open.c:1440 do_sys_open fs/open.c:1455 [inline] __do_sys_open fs/open.c:1463 [inline] __se_sys_open fs/open.c:1459 [inline] __x64_sys_open+0x154/0x1e0 fs/open.c:1459 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a Last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2667 destroy_inode+0x129/0x1b0 fs/inode.c:314 dispose_list+0x117/0x1e0 fs/inode.c:697 evict_inodes+0x34e/0x450 fs/inode.c:747 generic_shutdown_super+0xb5/0x3c0 fs/super.c:675 kill_block_super+0x3b/0x90 fs/super.c:1667 deactivate_locked_super+0xbc/0x1a0 fs/super.c:484 deactivate_super+0xde/0x100 fs/super.c:517 cleanup_mnt+0x222/0x450 fs/namespace.c:1256 task_work_run+0x14c/0x240 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x212/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296 do_syscall_64+0x4b/0x110 arch/x86/entry/common.c:88 entry_SYSCALL_64_after_hwframe+0x62/0x6a Second to last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2667 destroy_inode+0x129/0x1b0 fs/inode.c:314 dispose_list+0x117/0x1e0 fs/inode.c:697 evict_inodes+0x34e/0x450 fs/inode.c:747 generic_shutdown_super+0xb5/0x3c0 fs/super.c:675 kill_block_super+0x3b/0x90 fs/super.c:1667 deactivate_locked_super+0xbc/0x1a0 fs/super.c:484 deactivate_super+0xde/0x100 fs/super.c:517 cleanup_mnt+0x222/0x450 fs/namespace.c:1256 task_work_run+0x14c/0x240 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x212/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296 do_syscall_64+0x4b/0x110 arch/x86/entry/common.c:88 entry_SYSCALL_64_after_hwframe+0x62/0x6a The buggy address belongs to the object at ffff888034ac3500 which belongs to the cache reiser_inode_cache of size 1568 The buggy address is located 1536 bytes inside of freed 1568-byte region [ffff888034ac3500, ffff888034ac3b20) The buggy address belongs to the physical page: page:ffffea0000d2b000 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888034ac06a0 pfn:0x34ac0 head:ffffea0000d2b000 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff888058fc7401 flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000840 ffff888014703dc0 ffffea0000c3c210 ffffea0000c34a10 raw: ffff888034ac06a0 0000000000130001 00000001ffffffff ffff888058fc7401 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 6331, tgid 6328 (syz-executor.2), ts 268068396456, free_ts 268042543870 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1544 [inline] get_page_from_freelist+0xa16/0x3680 mm/page_alloc.c:3348 __alloc_pages+0x1cf/0x4c0 mm/page_alloc.c:4604 alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133 alloc_slab_page mm/slub.c:1870 [inline] allocate_slab+0x251/0x380 mm/slub.c:2017 new_slab mm/slub.c:2070 [inline] ___slab_alloc+0x8bf/0x1570 mm/slub.c:3223 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322 __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc_lru+0x52c/0x790 mm/slub.c:3509 alloc_inode_sb include/linux/fs.h:2937 [inline] reiserfs_alloc_inode+0x26/0xb0 fs/reiserfs/super.c:642 alloc_inode+0x5d/0x220 fs/inode.c:259 iget5_locked fs/inode.c:1269 [inline] iget5_locked+0x63/0xe0 fs/inode.c:1262 reiserfs_fill_super+0x10e7/0x3150 fs/reiserfs/super.c:2053 mount_bdev+0x1f3/0x2e0 fs/super.c:1650 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8c/0x370 fs/super.c:1771 do_new_mount fs/namespace.c:3337 [inline] path_mount+0x148e/0x1ed0 fs/namespace.c:3664 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+0x4f8/0xa90 mm/page_alloc.c:2383 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2523 __unfreeze_partials+0x21d/0x240 mm/slub.c:2655 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:763 [inline] slab_alloc_node mm/slub.c:3478 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x163/0x390 mm/slub.c:3502 getname_flags.part.0+0x50/0x4e0 fs/namei.c:140 getname_flags include/linux/audit.h:321 [inline] getname+0x8f/0xe0 fs/namei.c:219 do_sys_openat2+0x100/0x1e0 fs/open.c:1434 do_sys_open fs/open.c:1455 [inline] __do_sys_openat fs/open.c:1471 [inline] __se_sys_openat fs/open.c:1466 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1466 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a Memory state around the buggy address: ffff888034ac3a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888034ac3a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888034ac3b00: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888034ac3b80: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 ffff888034ac3c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================