loop2: detected capacity change from 0 to 4096 ================================================================== BUG: KASAN: use-after-free in ntfs_iget5+0x120/0x2b30 fs/ntfs3/inode.c:518 Read of size 8 at addr ffff0001210c6960 by task syz-executor.2/11885 CPU: 1 PID: 11885 Comm: syz-executor.2 Not tainted 5.15.108-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 __asan_report_load8_noabort+0x44/0x50 mm/kasan/report_generic.c:309 ntfs_iget5+0x120/0x2b30 fs/ntfs3/inode.c:518 ntfs_fill_super+0x1a30/0x33ec fs/ntfs3/super.c:1004 get_tree_bdev+0x360/0x54c fs/super.c:1303 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1354 vfs_get_tree+0x90/0x274 fs/super.c:1508 do_new_mount+0x25c/0x8c8 fs/namespace.c:2994 path_mount+0x590/0x104c fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount fs/namespace.c:3522 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3522 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Allocated by task 9339: 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+0x8c/0xcc mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x74/0x3f4 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x1dc/0x45c mm/slub.c:3233 reiserfs_alloc_inode+0x24/0xbc fs/reiserfs/super.c:642 alloc_inode fs/inode.c:236 [inline] iget5_locked+0xa4/0x230 fs/inode.c:1157 reiserfs_fill_super+0x101c/0x1e8c fs/reiserfs/super.c:2057 mount_bdev+0x26c/0x368 fs/super.c:1378 get_super_block+0x44/0x58 fs/reiserfs/super.c:2608 legacy_get_tree+0xd4/0x16c fs/fs_context.c:610 vfs_get_tree+0x90/0x274 fs/super.c:1508 do_new_mount+0x25c/0x8c8 fs/namespace.c:2994 path_mount+0x590/0x104c fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount fs/namespace.c:3522 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3522 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Last potentially related work creation: kasan_save_stack+0x38/0x68 mm/kasan/common.c:38 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:2993 [inline] call_rcu+0x118/0xb40 kernel/rcu/tree.c:3073 destroy_inode fs/inode.c:291 [inline] evict+0x5fc/0x68c fs/inode.c:602 dispose_list fs/inode.c:620 [inline] evict_inodes+0x6b4/0x74c fs/inode.c:670 generic_shutdown_super+0x9c/0x29c fs/super.c:454 kill_block_super+0x70/0xdc fs/super.c:1405 reiserfs_kill_sb+0x134/0x14c fs/reiserfs/super.c:570 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0x108/0x128 fs/super.c:366 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x130/0x1e4 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:597 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Second to last potentially related work creation: kasan_save_stack+0x38/0x68 mm/kasan/common.c:38 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:2993 [inline] call_rcu+0x118/0xb40 kernel/rcu/tree.c:3073 destroy_inode fs/inode.c:291 [inline] evict+0x5fc/0x68c fs/inode.c:602 iput_final fs/inode.c:1663 [inline] iput+0x744/0x824 fs/inode.c:1689 reiserfs_iget+0x1a8/0x298 fs/reiserfs/inode.c:1659 reiserfs_get_dentry fs/reiserfs/inode.c:1675 [inline] reiserfs_fh_to_dentry+0x200/0x3a8 fs/reiserfs/inode.c:1712 exportfs_decode_fh_raw+0x114/0x4b4 fs/exportfs/expfs.c:436 exportfs_decode_fh+0x50/0x80 fs/exportfs/expfs.c:576 do_handle_to_path fs/fhandle.c:152 [inline] handle_to_path fs/fhandle.c:207 [inline] do_handle_open+0x5b8/0x9fc fs/fhandle.c:223 __do_sys_open_by_handle_at fs/fhandle.c:265 [inline] __se_sys_open_by_handle_at fs/fhandle.c:256 [inline] __arm64_sys_open_by_handle_at+0x80/0x94 fs/fhandle.c:256 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 The buggy address belongs to the object at ffff0001210c6360 which belongs to the cache reiser_inode_cache of size 1568 The buggy address is located 1536 bytes inside of 1568-byte region [ffff0001210c6360, ffff0001210c6980) The buggy address belongs to the page: page:00000000c719cee1 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0001210c70a0 pfn:0x1610c0 head:00000000c719cee1 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff0000d020e801 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c607e300 raw: ffff0001210c70a0 000000008013000a 00000001ffffffff ffff0000d020e801 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0001210c6800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0001210c6880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0001210c6900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0001210c6980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0001210c6a00: 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 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: 96000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 11885 Comm: syz-executor.2 Tainted: G B 5.15.108-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ntfs_iget5+0x12c/0x2b30 fs/ntfs3/inode.c:518 lr : ntfs_iget5+0x120/0x2b30 fs/ntfs3/inode.c:518 sp : ffff800021dc7580 x29: ffff800021dc77a0 x28: dfff800000000000 x27: ffff7000043b8ee0 x26: ffff800021dc7970 x25: 000000000000000a x24: 0000000000000004 x23: dfff800000000000 x22: ffff800011d7bfc0 x21: 0000000000000010 x20: 0000000000000002 x19: ffff0001210c6b90 x18: 1fffe000368ffd8e x17: 1fffe000368ffd8e x16: ffff80001194067c x15: ffff80001496eda0 x14: ffff0001b47fec80 x13: ffffffffffffffff x12: 0000000000040000 x11: 000000000003a8bb x10: ffff8000205d9000 x9 : 0000000000000000 x8 : 0000000000000002 x7 : 0000000000000000 x6 : ffff8000082687c0 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80000819b8b0 x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000001 Call trace: ntfs_iget5+0x12c/0x2b30 fs/ntfs3/inode.c:518 ntfs_fill_super+0x1a30/0x33ec fs/ntfs3/super.c:1004 get_tree_bdev+0x360/0x54c fs/super.c:1303 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1354 vfs_get_tree+0x90/0x274 fs/super.c:1508 do_new_mount+0x25c/0x8c8 fs/namespace.c:2994 path_mount+0x590/0x104c fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount fs/namespace.c:3522 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3522 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: 97cc2efc f94002a8 91004115 d343fea8 (38f76908) ---[ end trace 01a03ef0e737a844 ]--- ---------------- Code disassembly (best guess): 0: 97cc2efc bl 0xffffffffff30bbf0 4: f94002a8 ldr x8, [x21] 8: 91004115 add x21, x8, #0x10 c: d343fea8 lsr x8, x21, #3 * 10: 38f76908 ldrsb w8, [x8, x23] <-- trapping instruction