loop1: detected capacity change from 0 to 8226 ntfs3: loop1: Mark volume as dirty due to NTFS errors ntfs3: loop1: Failed to load $Extend. ================================================================== BUG: KASAN: slab-out-of-bounds in hdr_find_e.isra.0+0x527/0x590 fs/ntfs3/index.c:689 Read of size 2 at addr ffff88808a04f820 by task syz-executor.1/7293 CPU: 0 PID: 7293 Comm: syz-executor.1 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15e/0x45d mm/kasan/report.c:395 kasan_report+0xbb/0x1f0 mm/kasan/report.c:495 hdr_find_e.isra.0+0x527/0x590 fs/ntfs3/index.c:689 indx_find+0x4ff/0x980 fs/ntfs3/index.c:1085 dir_search_u+0x232/0x3f0 fs/ntfs3/dir.c:254 ntfs_lookup+0x174/0x1e0 fs/ntfs3/namei.c:83 lookup_open.isra.0+0x76a/0x12a0 fs/namei.c:3391 open_last_lookups fs/namei.c:3481 [inline] path_openat+0x996/0x2860 fs/namei.c:3710 do_filp_open+0x1b6/0x400 fs/namei.c:3740 do_sys_openat2+0x16d/0x4c0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5aac48b5a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5aad2b4168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f5aac5abf80 RCX: 00007f5aac48b5a9 RDX: 000000000000275a RSI: 0000000020000080 RDI: ffffffffffffff9c RBP: 00007f5aac4e67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcad73e6bf R14: 00007f5aad2b4300 R15: 0000000000022000 Allocated by task 2969: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45 kasan_set_track+0x21/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] ____kasan_kmalloc mm/kasan/common.c:330 [inline] __kasan_kmalloc+0xa1/0xb0 mm/kasan/common.c:380 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:955 [inline] __kmalloc_node+0x57/0xc0 mm/slab_common.c:962 kmalloc_node include/linux/slab.h:602 [inline] kvmalloc_node+0x3f/0x1b0 mm/util.c:581 kvmalloc include/linux/slab.h:729 [inline] seq_buf_alloc fs/seq_file.c:38 [inline] seq_read_iter+0x7f7/0x1280 fs/seq_file.c:210 kernfs_fop_read_iter+0x542/0x7a0 fs/kernfs/file.c:275 call_read_iter include/linux/fs.h:2185 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x67d/0x930 fs/read_write.c:470 ksys_read+0x127/0x250 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 2969: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45 kasan_set_track+0x21/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2a/0x40 mm/kasan/generic.c:511 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1750 slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0xab/0x3b0 mm/slub.c:3674 kvfree+0x42/0x50 mm/util.c:627 seq_release+0x4f/0x80 fs/seq_file.c:355 kernfs_fop_release+0xf2/0x1e0 fs/kernfs/file.c:802 __fput+0x27c/0xa90 fs/file_table.c:320 task_work_run+0x16b/0x270 kernel/task_work.c:179 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+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88808a04e000 which belongs to the cache kmalloc-cg-4k of size 4096 The buggy address is located 2080 bytes to the right of 4096-byte region [ffff88808a04e000, ffff88808a04f000) The buggy address belongs to the physical page: page:ffffea0002281200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8a048 head:ffffea0002281200 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff888073471481 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 dead000000000100 dead000000000122 ffff88801184c280 raw: 0000000000000000 0000000000040004 00000001ffffffff ffff888073471481 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 2969, tgid 2969 (udevd), ts 255248206509, free_ts 255232459156 prep_new_page mm/page_alloc.c:2538 [inline] get_page_from_freelist+0x10b5/0x2d50 mm/page_alloc.c:4287 __alloc_pages+0x1c7/0x5a0 mm/page_alloc.c:5554 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2285 alloc_slab_page mm/slub.c:1794 [inline] allocate_slab+0x213/0x300 mm/slub.c:1939 new_slab mm/slub.c:1992 [inline] ___slab_alloc+0xa91/0x1400 mm/slub.c:3180 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3279 slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x191/0x3e0 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc_node+0x47/0xc0 mm/slab_common.c:962 kmalloc_node include/linux/slab.h:602 [inline] kvmalloc_node+0x3f/0x1b0 mm/util.c:581 kvmalloc include/linux/slab.h:729 [inline] seq_buf_alloc fs/seq_file.c:38 [inline] seq_read_iter+0x7f7/0x1280 fs/seq_file.c:210 kernfs_fop_read_iter+0x542/0x7a0 fs/kernfs/file.c:275 call_read_iter include/linux/fs.h:2185 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x67d/0x930 fs/read_write.c:470 ksys_read+0x127/0x250 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1458 [inline] free_pcp_prepare+0x65c/0xd90 mm/page_alloc.c:1508 free_unref_page_prepare mm/page_alloc.c:3386 [inline] free_unref_page+0x19/0x4d0 mm/page_alloc.c:3482 __unfreeze_partials+0x17c/0x1a0 mm/slub.c:2586 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x62/0x80 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:737 [inline] slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x2ac/0x3c0 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:702 [inline] __kernfs_new_node+0xd4/0x8b0 fs/kernfs/dir.c:603 kernfs_new_node fs/kernfs/dir.c:665 [inline] kernfs_create_dir_ns+0x9c/0x220 fs/kernfs/dir.c:1011 internal_create_group+0x787/0xb10 fs/sysfs/group.c:136 netdev_queue_add_kobject net/core/net-sysfs.c:1672 [inline] netdev_queue_update_kobjects+0x3aa/0x4e0 net/core/net-sysfs.c:1718 register_queue_kobjects net/core/net-sysfs.c:1779 [inline] netdev_register_kobject+0x330/0x400 net/core/net-sysfs.c:2019 register_netdevice+0xd95/0x1670 net/core/dev.c:10057 register_netdev+0x2d/0x50 net/core/dev.c:10183 loopback_net_init+0x73/0x160 drivers/net/loopback.c:219 ops_init+0xb9/0x680 net/core/net_namespace.c:135 Memory state around the buggy address: ffff88808a04f700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88808a04f780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88808a04f800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88808a04f880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88808a04f900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================