================================================================== BUG: KASAN: slab-use-after-free in ntfs_iget5+0x160/0x3b50 fs/ntfs3/inode.c:531 Read of size 8 at addr ffff88803d54f000 by task syz-executor.4/28235 CPU: 1 PID: 28235 Comm: syz-executor.4 Not tainted 6.4.0-syzkaller-11478-gd528014517f2 #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:364 [inline] print_report+0x163/0x540 mm/kasan/report.c:475 kasan_report+0x175/0x1b0 mm/kasan/report.c:588 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:1318 vfs_get_tree+0x8c/0x270 fs/super.c:1519 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: 0033:0x7f4f86c8d8ba 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:00007f4f857fdf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000001f750 RCX: 00007f4f86c8d8ba RDX: 0000000020000280 RSI: 0000000020000000 RDI: 00007f4f857fdfe0 RBP: 00007f4f857fe020 R08: 00007f4f857fe020 R09: 0000000000010000 R10: 0000000000010000 R11: 0000000000000202 R12: 0000000020000280 R13: 0000000020000000 R14: 00007f4f857fdfe0 R15: 0000000020000040 Allocated by task 16793: 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:750 slab_alloc_node mm/slub.c:3470 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc_lru+0x122/0x300 mm/slub.c:3501 alloc_inode_sb include/linux/fs.h:2729 [inline] reiserfs_alloc_inode+0x2a/0xc0 fs/reiserfs/super.c:642 alloc_inode fs/inode.c:260 [inline] iget5_locked+0xa0/0x270 fs/inode.c:1283 reiserfs_fill_super+0x12e4/0x2620 fs/reiserfs/super.c:2053 mount_bdev+0x276/0x3b0 fs/super.c:1391 legacy_get_tree+0xef/0x190 fs/fs_context.c:611 vfs_get_tree+0x8c/0x270 fs/super.c:1519 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 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:491 __call_rcu_common kernel/rcu/tree.c:2649 [inline] call_rcu+0x167/0xa70 kernel/rcu/tree.c:2763 reiserfs_fill_super+0x1572/0x2620 fs/reiserfs/super.c:2078 mount_bdev+0x276/0x3b0 fs/super.c:1391 legacy_get_tree+0xef/0x190 fs/fs_context.c:611 vfs_get_tree+0x8c/0x270 fs/super.c:1519 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 Second to 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: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:478 kill_block_super+0x68/0xa0 fs/super.c:1417 deactivate_locked_super+0xa4/0x110 fs/super.c:330 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 ffff88803d54ea00 which belongs to the cache reiser_inode_cache of size 1568 The buggy address is located 1536 bytes inside of freed 1568-byte region [ffff88803d54ea00, ffff88803d54f020) The buggy address belongs to the physical page: page:ffffea0000f55200 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88803d54ae60 pfn:0x3d548 head:ffffea0000f55200 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff88802a0d7101 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000010200 ffff8881432fd000 ffffea0000e9fe00 0000000000000002 raw: ffff88803d54ae60 0000000080130006 00000001ffffffff ffff88802a0d7101 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 4204, tgid 4203 (syz-executor.4), ts 1823064260969, free_ts 1796638826743 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1570 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0x31e8/0x3370 mm/page_alloc.c:3221 __alloc_pages+0x255/0x670 mm/page_alloc.c:4477 alloc_slab_page+0x6a/0x160 mm/slub.c:1862 allocate_slab mm/slub.c:2009 [inline] new_slab+0x84/0x2f0 mm/slub.c:2062 ___slab_alloc+0xade/0x1100 mm/slub.c:3215 __slab_alloc mm/slub.c:3314 [inline] __slab_alloc_node mm/slub.c:3367 [inline] slab_alloc_node mm/slub.c:3460 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc_lru+0x1bf/0x300 mm/slub.c:3501 alloc_inode_sb include/linux/fs.h:2729 [inline] reiserfs_alloc_inode+0x2a/0xc0 fs/reiserfs/super.c:642 alloc_inode fs/inode.c:260 [inline] iget5_locked+0xa0/0x270 fs/inode.c:1283 reiserfs_fill_super+0x12e4/0x2620 fs/reiserfs/super.c:2053 mount_bdev+0x276/0x3b0 fs/super.c:1391 legacy_get_tree+0xef/0x190 fs/fs_context.c:611 vfs_get_tree+0x8c/0x270 fs/super.c:1519 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 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1161 [inline] free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2348 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2443 __slab_free+0x2f6/0x390 mm/slub.c:3707 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:750 slab_alloc_node mm/slub.c:3470 [inline] __kmem_cache_alloc_node+0x141/0x270 mm/slub.c:3509 __do_kmalloc_node mm/slab_common.c:984 [inline] __kmalloc+0xa8/0x230 mm/slab_common.c:998 kmalloc_array include/linux/slab.h:619 [inline] memcg_list_lru_alloc+0x23b/0xd20 mm/list_lru.c:487 memcg_slab_pre_alloc_hook mm/slab.h:496 [inline] slab_pre_alloc_hook+0x247/0x2b0 mm/slab.h:714 slab_alloc_node mm/slub.c:3452 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc_lru+0x4e/0x300 mm/slub.c:3501 __d_alloc+0x31/0x710 fs/dcache.c:1769 d_alloc_anon fs/dcache.c:1868 [inline] d_make_root+0x4a/0xe0 fs/dcache.c:2069 btrfs_fill_super+0x21d/0x2f0 fs/btrfs/super.c:1167 btrfs_mount_root+0x7e0/0x910 fs/btrfs/super.c:1519 Memory state around the buggy address: ffff88803d54ef00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88803d54ef80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88803d54f000: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88803d54f080: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 ffff88803d54f100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================