ntfs3: loop1: RAW NTFS volume: Filesystem size 0.00 Gb > volume size 0.00 Gb. Mount in read-only ================================================================== BUG: KASAN: use-after-free in ntfs_iget5+0x11c/0x2bbc fs/ntfs3/inode.c:528 Read of size 8 at addr ffff0000e2aa8ca0 by task syz.1.2619/9769 CPU: 1 PID: 9769 Comm: syz.1.2619 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 Call trace: dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106 print_address_description+0x88/0x218 mm/kasan/report.c:316 print_report+0x50/0x68 mm/kasan/report.c:420 kasan_report+0xa8/0xfc mm/kasan/report.c:524 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351 ntfs_iget5+0x11c/0x2bbc fs/ntfs3/inode.c:528 ntfs_fill_super+0x1aec/0x334c fs/ntfs3/super.c:1038 get_tree_bdev+0x358/0x544 fs/super.c:1366 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1388 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3078 path_mount+0x5bc/0xe80 fs/namespace.c:3408 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount fs/namespace.c:3606 [inline] __arm64_sys_mount+0x49c/0x59c fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 6461: kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:53 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 __kasan_slab_alloc+0x70/0x88 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x74/0x430 mm/slab.h:737 slab_alloc_node mm/slub.c:3359 [inline] slab_alloc mm/slub.c:3367 [inline] __kmem_cache_alloc_lru mm/slub.c:3374 [inline] kmem_cache_alloc_lru+0x1a4/0x280 mm/slub.c:3390 alloc_inode_sb include/linux/fs.h:3245 [inline] reiserfs_alloc_inode+0x2c/0xc4 fs/reiserfs/super.c:642 alloc_inode fs/inode.c:261 [inline] iget5_locked+0xa4/0x228 fs/inode.c:1328 reiserfs_fill_super+0xe58/0x1d40 fs/reiserfs/super.c:2053 mount_bdev+0x264/0x358 fs/super.c:1443 get_super_block+0x44/0x58 fs/reiserfs/super.c:2601 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3078 path_mount+0x5bc/0xe80 fs/namespace.c:3408 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount fs/namespace.c:3606 [inline] __arm64_sys_mount+0x49c/0x59c fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Last potentially related work creation: kasan_save_stack+0x40/0x70 mm/kasan/common.c:46 __kasan_record_aux_stack+0xc0/0xdc mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 call_rcu+0x100/0x94c kernel/rcu/tree.c:2849 destroy_inode fs/inode.c:316 [inline] evict+0x760/0x828 fs/inode.c:720 iput_final fs/inode.c:1834 [inline] iput+0x754/0x7e4 fs/inode.c:1860 reiserfs_fill_super+0x108c/0x1d40 fs/reiserfs/super.c:2078 mount_bdev+0x264/0x358 fs/super.c:1443 get_super_block+0x44/0x58 fs/reiserfs/super.c:2601 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3078 path_mount+0x5bc/0xe80 fs/namespace.c:3408 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount fs/namespace.c:3606 [inline] __arm64_sys_mount+0x49c/0x59c fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the object at ffff0000e2aa86a0 which belongs to the cache reiser_inode_cache of size 1568 The buggy address is located 1536 bytes inside of 1568-byte region [ffff0000e2aa86a0, ffff0000e2aa8cc0) The buggy address belongs to the physical page: page:0000000014d9681e refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000e2aa86a0 pfn:0x122aa8 head:0000000014d9681e order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff0000d016c601 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c4f6c780 raw: ffff0000e2aa86a0 0000000080130011 00000001ffffffff ffff0000d016c601 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000e2aa8b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000e2aa8c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000e2aa8c80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ^ ffff0000e2aa8d00: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ffff0000e2aa8d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== Unable to handle kernel paging request at virtual address dfff800000000002 KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000002] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 9769 Comm: syz.1.2619 Tainted: G B syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : ntfs_iget5+0x128/0x2bbc fs/ntfs3/inode.c:528 lr : ntfs_iget5+0x11c/0x2bbc fs/ntfs3/inode.c:528 sp : ffff800021147600 x29: ffff800021147820 x28: ffff0000c4bd4000 x27: ffff0000c8e921e8 x26: ffff800021147780 x25: ffff800011eb4680 x24: ffff700004228ef0 x23: dfff800000000000 x22: 0000000000000010 x21: 0000000000000002 x20: ffff0000e2aa8ed0 x19: 0000000000000000 x18: ffff800011b9bf60 x17: 0000000000000000 x16: ffff80000804309c x15: 0000000000000002 x14: 0000000000000001 x13: 1ffff00002fc1d6c x12: 0000000000080000 x11: 000000000007ffff x10: ffff800025a09000 x9 : 0000000000000000 x8 : 0000000000000002 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800021146fd8 x4 : ffff800015304cc0 x3 : ffff800008193d18 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000001 Call trace: ntfs_iget5+0x128/0x2bbc fs/ntfs3/inode.c:528 ntfs_fill_super+0x1aec/0x334c fs/ntfs3/super.c:1038 get_tree_bdev+0x358/0x544 fs/super.c:1366 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1388 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x228/0x810 fs/namespace.c:3078 path_mount+0x5bc/0xe80 fs/namespace.c:3408 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount fs/namespace.c:3606 [inline] __arm64_sys_mount+0x49c/0x59c fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: 97cbf4c9 f94002c8 91004116 d343fec8 (38f76908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97cbf4c9 bl 0xffffffffff2fd324 4: f94002c8 ldr x8, [x22] 8: 91004116 add x22, x8, #0x10 c: d343fec8 lsr x8, x22, #3 * 10: 38f76908 ldrsb w8, [x8, x23] <-- trapping instruction