loop4: detected capacity change from 0 to 4096 ================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_iget5+0x160/0x3b50 fs/ntfs3/inode.c:531 Read of size 8 at addr ffff88803cf17f60 by task syz-executor.4/12200 CPU: 1 PID: 12200 Comm: syz-executor.4 Not tainted 6.5.0-rc7-syzkaller-00018-g89bf6209cad6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 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+0x2cb7/0x4cb0 fs/ntfs3/super.c:1215 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: 0033:0x7f7801e7e1ea 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:00007f7802cb2ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f7802cb2f80 RCX: 00007f7801e7e1ea RDX: 000000002001f740 RSI: 000000002001f780 RDI: 00007f7802cb2f40 RBP: 000000002001f740 R08: 00007f7802cb2f80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 000000002001f780 R13: 00007f7802cb2f40 R14: 000000000001f726 R15: 00000000200013c0 Allocated by task 12069: 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+0x6c/0x3b0 mm/slab.h:762 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+0x123/0x300 mm/slub.c:3494 kmem_cache_zalloc include/linux/slab.h:693 [inline] alloc_buffer_head+0x2d/0x2a0 fs/buffer.c:3037 folio_alloc_buffers+0x3ab/0x9e0 fs/buffer.c:940 folio_create_empty_buffers+0x3a/0x750 fs/buffer.c:1669 folio_create_buffers+0x132/0x250 fs/buffer.c:1795 __block_write_begin_int+0x1f9/0x1a60 fs/buffer.c:2107 __block_write_begin fs/buffer.c:2178 [inline] block_write_begin+0x9c/0x1f0 fs/buffer.c:2239 generic_perform_write+0x31b/0x630 mm/filemap.c:3923 ntfs_file_write_iter+0x5fe/0x6d0 fs/ntfs3/file.c:1081 do_iter_write+0x84f/0xde0 fs/read_write.c:860 iter_file_splice_write+0x86d/0x1010 fs/splice.c:739 do_splice_from fs/splice.c:936 [inline] direct_splice_actor+0xea/0x1c0 fs/splice.c:1145 splice_direct_to_actor+0x376/0x9e0 fs/splice.c:1091 do_splice_direct+0x2ac/0x3f0 fs/splice.c:1197 do_sendfile+0x623/0x1070 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308 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 Freed by task 5062: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1792 [inline] slab_free_freelist_hook mm/slub.c:1818 [inline] slab_free mm/slub.c:3801 [inline] kmem_cache_free+0x292/0x500 mm/slub.c:3823 free_buffer_head+0x55/0x240 fs/buffer.c:3053 try_to_free_buffers+0x306/0x610 fs/buffer.c:2994 block_invalidate_folio+0x681/0xa10 fs/buffer.c:1653 folio_invalidate mm/truncate.c:159 [inline] truncate_cleanup_folio+0x1e3/0x5f0 mm/truncate.c:179 truncate_inode_pages_range+0x2bc/0x11b0 mm/truncate.c:368 ntfs_evict_inode+0x19/0x40 fs/ntfs3/inode.c:1790 evict+0x2a4/0x620 fs/inode.c:664 dispose_list fs/inode.c:697 [inline] evict_inodes+0x5f8/0x690 fs/inode.c:747 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 ffff88803cf17e80 which belongs to the cache buffer_head of size 168 The buggy address is located 56 bytes to the right of allocated 168-byte region [ffff88803cf17e80, ffff88803cf17f28) The buggy address belongs to the physical page: page:ffffea0000f3c5c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3cf17 memcg:ffff8880351cd401 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000200 ffff888015a66dc0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880351cd401 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x112c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 12069, tgid 12067 (syz-executor.4), ts 2990321027170, free_ts 2984319941327 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+0x1bf/0x300 mm/slub.c:3494 kmem_cache_zalloc include/linux/slab.h:693 [inline] alloc_buffer_head+0x2d/0x2a0 fs/buffer.c:3037 folio_alloc_buffers+0x3ab/0x9e0 fs/buffer.c:940 folio_create_empty_buffers+0x3a/0x750 fs/buffer.c:1669 folio_create_buffers+0x132/0x250 fs/buffer.c:1795 __block_write_begin_int+0x1f9/0x1a60 fs/buffer.c:2107 __block_write_begin fs/buffer.c:2178 [inline] block_write_begin+0x9c/0x1f0 fs/buffer.c:2239 generic_perform_write+0x31b/0x630 mm/filemap.c:3923 ntfs_file_write_iter+0x5fe/0x6d0 fs/ntfs3/file.c:1081 do_iter_write+0x84f/0xde0 fs/read_write.c:860 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+0x6c/0x3b0 mm/slab.h:762 slab_alloc_node mm/slub.c:3470 [inline] __kmem_cache_alloc_node+0x141/0x270 mm/slub.c:3509 kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1076 kmalloc include/linux/slab.h:582 [inline] kzalloc include/linux/slab.h:703 [inline] kernfs_fop_open+0x3e7/0xcc0 fs/kernfs/file.c:670 do_dentry_open+0x829/0x1470 fs/open.c:914 do_open fs/namei.c:3636 [inline] path_openat+0x27bb/0x3180 fs/namei.c:3793 do_filp_open+0x234/0x490 fs/namei.c:3820 do_sys_openat2+0x13e/0x1d0 fs/open.c:1407 do_sys_open fs/open.c:1422 [inline] __do_sys_openat fs/open.c:1438 [inline] __se_sys_openat fs/open.c:1433 [inline] __x64_sys_openat+0x247/0x290 fs/open.c:1433 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 Memory state around the buggy address: ffff88803cf17e00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88803cf17e80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88803cf17f00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc ^ ffff88803cf17f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88803cf18000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================