KASAN: slab-out-of-bounds Read in ntfs_test

Kernel	Title	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	KASAN: use-after-free Read in ntfs_test_inode ntfs	C	done	402	3d18h	938d	24/25	upstream: reported C repro on 2021/05/17 10:56
linux-5.15	KASAN: use-after-free Read in ntfs_test_inode			6	61d	260d	0/3	upstream: reported on 2023/03/25 12:26
linux-4.19	KASAN: use-after-free Read in ntfs_test_inode			1	377d	377d	0/1	auto-obsoleted due to no activity on 2023/03/28 18:25

ntfs: volume version 3.1. ================================================================== BUG: KASAN: slab-out-of-bounds in constant_test_bit arch/x86/include/asm/bitops.h:328 [inline] BUG: KASAN: slab-out-of-bounds in NInoAttr fs/ntfs/inode.h:214 [inline] BUG: KASAN: slab-out-of-bounds in ntfs_test_inode+0x213/0x270 fs/ntfs/inode.c:68 Read of size 8 at addr ffff88803e3430e8 by task syz-executor.5/16136 CPU: 1 PID: 16136 Comm: syz-executor.5 Not tainted 4.14.267-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351 kasan_report mm/kasan/report.c:409 [inline] __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430 constant_test_bit arch/x86/include/asm/bitops.h:328 [inline] NInoAttr fs/ntfs/inode.h:214 [inline] ntfs_test_inode+0x213/0x270 fs/ntfs/inode.c:68 find_inode+0xde/0x190 fs/inode.c:804 iget5_locked+0x89/0x450 fs/inode.c:1038 ntfs_iget+0x8d/0x130 fs/ntfs/inode.c:181 load_and_check_logfile fs/ntfs/super.c:1222 [inline] load_system_files fs/ntfs/super.c:1955 [inline] ntfs_fill_super+0x4bf9/0x7170 fs/ntfs/super.c:2908 mount_bdev+0x2b3/0x360 fs/super.c:1134 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a10 fs/namespace.c:2902 SYSC_mount fs/namespace.c:3118 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3095 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fc569a1d58a RSP: 002b:00007fc568390f88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fc569a1d58a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fc568390fe0 RBP: 00007fc568391020 R08: 00007fc568391020 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fc568390fe0 R15: 0000000020000040 Allocated by task 14748: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 kmem_cache_alloc+0x124/0x3c0 mm/slab.c:3552 reiserfs_alloc_inode+0x18/0xa0 fs/reiserfs/super.c:642 alloc_inode+0x5d/0x170 fs/inode.c:210 iget5_locked+0x169/0x450 fs/inode.c:1050 reiserfs_fill_super+0xe28/0x2980 fs/reiserfs/super.c:2066 mount_bdev+0x2b3/0x360 fs/super.c:1134 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a10 fs/namespace.c:2902 SYSC_mount fs/namespace.c:3118 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3095 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb Freed by task 13694: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3496 [inline] kmem_cache_free+0x7c/0x2b0 mm/slab.c:3758 __rcu_reclaim kernel/rcu/rcu.h:195 [inline] rcu_do_batch kernel/rcu/tree.c:2699 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline] rcu_process_callbacks+0x780/0x1180 kernel/rcu/tree.c:2946 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 The buggy address belongs to the object at ffff88803e343200 which belongs to the cache reiser_inode_cache of size 1312 The buggy address is located 280 bytes to the left of 1312-byte region [ffff88803e343200, ffff88803e343720) The buggy address belongs to the page: page:ffffea0000f8d0c0 count:1 mapcount:0 mapping:ffff88803e343200 index:0xffff88803e343ffe flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffff88803e343200 ffff88803e343ffe 0000000100000002 raw: ffffea00015af560 ffff8880b10a9b48 ffff8880b177eb00 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88803e342f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88803e343000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88803e343080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88803e343100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88803e343180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================