loop0: detected capacity change from 0 to 4096 ntfs3: loop0: Different NTFS' sector size (2048) and media sector size (512) ================================================================== BUG: KASAN: use-after-free in ntfs_iget5+0x120/0x2c8c fs/ntfs3/inode.c:526 Read of size 8 at addr ffff0000d77da720 by task syz.0.11026/28594 CPU: 1 PID: 28594 Comm: syz.0.11026 Not tainted 6.1.132-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:427 kasan_report+0xd4/0x130 mm/kasan/report.c:531 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351 ntfs_iget5+0x120/0x2c8c fs/ntfs3/inode.c:526 ntfs_fill_super+0x1b98/0x36cc fs/ntfs3/super.c:1033 get_tree_bdev+0x360/0x54c fs/super.c:1366 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1383 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x498/0x588 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 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 9095: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x74/0x458 mm/slab.h:737 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_lru+0x1ac/0x2f8 mm/slub.c:3429 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] new_inode_pseudo+0x68/0x1d0 fs/inode.c:1063 new_inode+0x38/0x174 fs/inode.c:1091 reiserfs_mkdir+0x18c/0x77c fs/reiserfs/namei.c:815 xattr_mkdir fs/reiserfs/xattr.c:76 [inline] create_privroot fs/reiserfs/xattr.c:882 [inline] reiserfs_xattr_init+0x2b0/0x6bc fs/reiserfs/xattr.c:1005 reiserfs_fill_super+0x1bfc/0x2028 fs/reiserfs/super.c:2175 mount_bdev+0x274/0x370 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+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x498/0x588 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 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:45 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496 call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2845 destroy_inode fs/inode.c:316 [inline] evict+0x7ac/0x894 fs/inode.c:720 dispose_list fs/inode.c:738 [inline] evict_inodes+0x6dc/0x774 fs/inode.c:792 generic_shutdown_super+0x9c/0x328 fs/super.c:480 kill_block_super+0x70/0xdc fs/super.c:1470 reiserfs_kill_sb+0x134/0x14c fs/reiserfs/super.c:570 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xf0/0x110 fs/super.c:363 cleanup_mnt+0x394/0x41c fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x240/0x2f0 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2080/0x2cb8 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 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 ffff0000d77da120 which belongs to the cache reiser_inode_cache of size 1568 The buggy address is located 1536 bytes inside of 1568-byte region [ffff0000d77da120, ffff0000d77da740) The buggy address belongs to the physical page: page:0000000069ca78ce refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000d77dcf80 pfn:0x1177d8 head:0000000069ca78ce order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff0000c315ee01 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c4158780 raw: ffff0000d77dcf80 000000008013000f 00000001ffffffff ffff0000c315ee01 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000d77da600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000d77da680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000d77da700: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ^ ffff0000d77da780: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ffff0000d77da800: 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: 28594 Comm: syz.0.11026 Tainted: G B 6.1.132-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ntfs_iget5+0x12c/0x2c8c fs/ntfs3/inode.c:526 lr : ntfs_iget5+0x120/0x2c8c fs/ntfs3/inode.c:526 sp : ffff800022db7560 x29: ffff800022db77a0 x28: 0000000000000001 x27: ffff0000e019a000 x26: 000000000000000b x25: dfff800000000000 x24: ffff8000127ab8c0 x23: ffff7000045b6ee0 x22: 0000000000000010 x21: 0000000000000002 x20: ffff0000d77da950 x19: ffff800022db7700 x18: 1fffe00036798576 x17: ffff800015afd000 x16: ffff8000123287ec x15: ffff0001b3cc2bbc x14: ffff0001b3cc2bb8 x13: 1fffe00036798576 x12: 0000000000080000 x11: 0000000000036bd3 x10: ffff800021b49000 x9 : 0000000000000000 x8 : 0000000000000002 x7 : 1fffe00036798577 x6 : ffff800008279464 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000081a92b0 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000001 Call trace: ntfs_iget5+0x12c/0x2c8c fs/ntfs3/inode.c:526 ntfs_fill_super+0x1b98/0x36cc fs/ntfs3/super.c:1033 get_tree_bdev+0x360/0x54c fs/super.c:1366 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1383 vfs_get_tree+0x90/0x274 fs/super.c:1573 do_new_mount+0x278/0x8fc fs/namespace.c:3056 path_mount+0x590/0xe5c fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount fs/namespace.c:3584 [inline] __arm64_sys_mount+0x498/0x588 fs/namespace.c:3584 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 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: 97c8b918 f94002c8 91004116 d343fec8 (38f96908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97c8b918 bl 0xffffffffff22e460 4: f94002c8 ldr x8, [x22] 8: 91004116 add x22, x8, #0x10 c: d343fec8 lsr x8, x22, #3 * 10: 38f96908 ldrsb w8, [x8, x25] <-- trapping instruction