loop0: detected capacity change from 0 to 515 ntfs: (device loop0): is_boot_sector_ntfs(): Invalid end of sector marker. ================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_attr_find+0x91a/0xd80 fs/ntfs/attrib.c:597 Read of size 2 at addr ffff88807660dfc2 by task syz-executor399/3607 CPU: 0 PID: 3607 Comm: syz-executor399 Not tainted 6.0.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 print_address_description+0x65/0x4b0 mm/kasan/report.c:317 print_report+0x108/0x1f0 mm/kasan/report.c:433 kasan_report+0xc3/0xf0 mm/kasan/report.c:495 ntfs_attr_find+0x91a/0xd80 fs/ntfs/attrib.c:597 ntfs_attr_lookup+0x4c3/0x2370 ntfs_read_inode_mount+0x8c9/0x2680 fs/ntfs/inode.c:1845 ntfs_fill_super+0x187a/0x2bf0 fs/ntfs/super.c:2854 mount_bdev+0x26c/0x3a0 fs/super.c:1400 legacy_get_tree+0xea/0x180 fs/fs_context.c:610 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x289/0xad0 fs/namespace.c:3040 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3568 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+0x63/0xcd RIP: 0033:0x7f080b27f4ca Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 08 01 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcce528958 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffcce5289b0 RCX: 00007f080b27f4ca RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcce528970 RBP: 00007ffcce528970 R08: 00007ffcce5289b0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000286 R12: 0000000020000260 R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000004 Allocated by task 3607: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:437 [inline] ____kasan_kmalloc+0xcd/0x100 mm/kasan/common.c:516 kasan_kmalloc include/linux/kasan.h:234 [inline] kmem_cache_alloc_trace+0x97/0x310 mm/slub.c:3284 kmalloc include/linux/slab.h:600 [inline] tomoyo_print_header security/tomoyo/audit.c:156 [inline] tomoyo_init_log+0x16a/0x1f80 security/tomoyo/audit.c:255 tomoyo_supervisor+0x3b9/0x1470 security/tomoyo/common.c:2088 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline] tomoyo_path_number_perm+0x530/0x790 security/tomoyo/file.c:734 tomoyo_path_mkdir+0xe3/0x120 security/tomoyo/tomoyo.c:166 security_path_mkdir+0xd5/0x160 security/security.c:1158 do_mkdirat+0x1aa/0x550 fs/namei.c:4033 __do_sys_mkdir fs/namei.c:4058 [inline] __se_sys_mkdir fs/namei.c:4056 [inline] __x64_sys_mkdir+0x6a/0x80 fs/namei.c:4056 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+0x63/0xcd Freed by task 3607: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:45 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:370 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:367 kasan_slab_free include/linux/kasan.h:200 [inline] slab_free_hook mm/slub.c:1754 [inline] slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1780 slab_free mm/slub.c:3534 [inline] kfree+0xda/0x210 mm/slub.c:4562 tomoyo_init_log+0x1be7/0x1f80 security/tomoyo/audit.c:294 tomoyo_supervisor+0x3b9/0x1470 security/tomoyo/common.c:2088 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline] tomoyo_path_number_perm+0x530/0x790 security/tomoyo/file.c:734 tomoyo_path_mkdir+0xe3/0x120 security/tomoyo/tomoyo.c:166 security_path_mkdir+0xd5/0x160 security/security.c:1158 do_mkdirat+0x1aa/0x550 fs/namei.c:4033 __do_sys_mkdir fs/namei.c:4058 [inline] __se_sys_mkdir fs/namei.c:4056 [inline] __x64_sys_mkdir+0x6a/0x80 fs/namei.c:4056 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+0x63/0xcd The buggy address belongs to the object at ffff88807660c000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 4034 bytes to the right of 4096-byte region [ffff88807660c000, ffff88807660d000) The buggy address belongs to the physical page: page:ffffea0001d98200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x76608 head:ffffea0001d98200 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea000087ac00 dead000000000002 ffff888012042140 raw: 0000000000000000 0000000080040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 2984, tgid 2984 (udevd), ts 14493525012, free_ts 11146345813 prep_new_page mm/page_alloc.c:2532 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4283 __alloc_pages+0x259/0x560 mm/page_alloc.c:5515 alloc_slab_page+0x70/0xf0 mm/slub.c:1824 allocate_slab+0x5e/0x520 mm/slub.c:1969 new_slab mm/slub.c:2029 [inline] ___slab_alloc+0x3ee/0xc40 mm/slub.c:3031 __slab_alloc mm/slub.c:3118 [inline] slab_alloc_node mm/slub.c:3209 [inline] slab_alloc mm/slub.c:3251 [inline] __kmalloc+0x2bd/0x370 mm/slub.c:4420 kmalloc include/linux/slab.h:605 [inline] tomoyo_realpath_from_path+0xd8/0x5f0 security/tomoyo/realpath.c:254 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x1f0/0x460 security/tomoyo/file.c:771 security_file_open+0x50/0x560 security/security.c:1646 do_dentry_open+0x34c/0x1180 fs/open.c:865 do_open fs/namei.c:3557 [inline] path_openat+0x25fc/0x2df0 fs/namei.c:3691 do_filp_open+0x264/0x4f0 fs/namei.c:3718 do_sys_openat2+0x124/0x4e0 fs/open.c:1311 do_sys_open fs/open.c:1327 [inline] __do_sys_openat fs/open.c:1343 [inline] __se_sys_openat fs/open.c:1338 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1338 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+0x63/0xcd page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1449 [inline] free_pcp_prepare+0x812/0x900 mm/page_alloc.c:1499 free_unref_page_prepare mm/page_alloc.c:3380 [inline] free_unref_page+0x7d/0x5f0 mm/page_alloc.c:3476 free_contig_range+0xa3/0x160 mm/page_alloc.c:9408 destroy_args+0xfe/0x91d mm/debug_vm_pgtable.c:1031 debug_vm_pgtable+0x43e/0x497 mm/debug_vm_pgtable.c:1354 do_one_initcall+0x1b9/0x3e0 init/main.c:1296 do_initcall_level+0x168/0x218 init/main.c:1369 do_initcalls+0x4b/0x8c init/main.c:1385 kernel_init_freeable+0x3f1/0x57b init/main.c:1623 kernel_init+0x19/0x2b0 init/main.c:1512 ret_from_fork+0x1f/0x30 Memory state around the buggy address: ffff88807660de80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807660df00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88807660df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88807660e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88807660e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================