================================================================== BUG: KASAN: use-after-free in ntfs_iget5+0x154/0x3900 fs/ntfs3/inode.c:525 Read of size 8 at addr ffff8880259ffdd0 by task syz-executor.3/16244 CPU: 1 PID: 16244 Comm: syz-executor.3 Not tainted 5.15.130-syzkaller #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+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 ntfs_iget5+0x154/0x3900 fs/ntfs3/inode.c:525 ntfs_fill_super+0x1c7c/0x4450 fs/ntfs3/super.c:941 get_tree_bdev+0x3fe/0x620 fs/super.c:1312 vfs_get_tree+0x88/0x270 fs/super.c:1517 do_new_mount+0x28b/0xae0 fs/namespace.c:2994 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fc0c096b1ea 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:00007fc0beeeaee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fc0beeeaf80 RCX: 00007fc0c096b1ea RDX: 0000000020000000 RSI: 000000002001f1c0 RDI: 00007fc0beeeaf40 RBP: 0000000020000000 R08: 00007fc0beeeaf80 R09: 0000000001014085 R10: 0000000001014085 R11: 0000000000000202 R12: 000000002001f1c0 R13: 00007fc0beeeaf40 R14: 000000000001f1ae R15: 0000000020000140 Allocated by task 15976: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233 btrfs_alloc_inode+0x4c/0x470 fs/btrfs/inode.c:9193 alloc_inode fs/inode.c:236 [inline] new_inode_pseudo+0x60/0x210 fs/inode.c:937 new_inode+0x25/0x1d0 fs/inode.c:966 btrfs_new_inode+0x1c5/0x1c10 fs/btrfs/inode.c:6510 btrfs_create+0x32d/0x680 fs/btrfs/inode.c:6845 lookup_open fs/namei.c:3392 [inline] open_last_lookups fs/namei.c:3462 [inline] path_openat+0x12f6/0x2f20 fs/namei.c:3669 do_filp_open+0x21c/0x460 fs/namei.c:3699 do_sys_openat2+0x13b/0x500 fs/open.c:1211 do_sys_open fs/open.c:1227 [inline] __do_sys_openat fs/open.c:1243 [inline] __se_sys_openat fs/open.c:1238 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1238 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Last potentially related work creation: kasan_save_stack+0x36/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:2994 [inline] call_rcu+0x1c4/0xa70 kernel/rcu/tree.c:3074 dispose_list fs/inode.c:620 [inline] evict_inodes+0x601/0x6a0 fs/inode.c:670 generic_shutdown_super+0x99/0x2c0 fs/super.c:454 kill_anon_super+0x37/0x60 fs/super.c:1076 btrfs_kill_super+0x3d/0x50 fs/btrfs/super.c:2391 deactivate_locked_super+0xa0/0x110 fs/super.c:335 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143 task_work_run+0x129/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x61/0xcb Second to last potentially related work creation: kasan_save_stack+0x36/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:2994 [inline] call_rcu+0x1c4/0xa70 kernel/rcu/tree.c:3074 dispose_list fs/inode.c:620 [inline] evict_inodes+0x601/0x6a0 fs/inode.c:670 generic_shutdown_super+0x99/0x2c0 fs/super.c:454 kill_anon_super+0x37/0x60 fs/super.c:1076 btrfs_kill_super+0x3d/0x50 fs/btrfs/super.c:2391 deactivate_locked_super+0xa0/0x110 fs/super.c:335 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143 task_work_run+0x129/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x61/0xcb The buggy address belongs to the object at ffff8880259ff5c0 which belongs to the cache btrfs_inode of size 2384 The buggy address is located 2064 bytes inside of 2384-byte region [ffff8880259ff5c0, ffff8880259fff10) The buggy address belongs to the page: page:ffffea0000967e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880259fe220 pfn:0x259f8 head:ffffea0000967e00 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff88801c70a601 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0001c64e00 0000000200000002 ffff88814b65a140 raw: ffff8880259fe220 00000000800d0005 00000001ffffffff ffff88801c70a601 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 4087, ts 145665092407, free_ts 0 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159 __alloc_pages+0x272/0x700 mm/page_alloc.c:5421 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x18e/0x280 mm/slub.c:3233 btrfs_alloc_inode+0x4c/0x470 fs/btrfs/inode.c:9193 alloc_inode fs/inode.c:236 [inline] iget5_locked+0x9c/0x260 fs/inode.c:1199 btrfs_iget_locked fs/btrfs/inode.c:5930 [inline] btrfs_iget_path+0x164/0x16b0 fs/btrfs/inode.c:5947 btrfs_fill_super+0x206/0x2d0 fs/btrfs/super.c:1393 btrfs_mount_root+0x803/0x930 fs/btrfs/super.c:1752 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1517 fc_mount fs/namespace.c:1000 [inline] vfs_kern_mount+0xb8/0x150 fs/namespace.c:1030 btrfs_mount+0x395/0xb40 fs/btrfs/super.c:1812 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1517 page_owner free stack trace missing Memory state around the buggy address: ffff8880259ffc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880259ffd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880259ffd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880259ffe00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880259ffe80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================