loop1: detected capacity change from 0 to 4096 ntfs3: loop1: Different NTFS sector size (1024) and media sector size (512). ================================================================== BUG: KASAN: stack-out-of-bounds in ino_get fs/ntfs3/ntfs.h:193 [inline] BUG: KASAN: stack-out-of-bounds in ntfs_set_inode+0x65/0x70 fs/ntfs3/inode.c:514 Read of size 4 at addr ffffc90006dd7caf by task syz-executor.1/22499 CPU: 2 PID: 22499 Comm: syz-executor.1 Not tainted 6.4.0-rc6-syzkaller-00035-g15adb51c04cc #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:351 print_report mm/kasan/report.c:462 [inline] kasan_report+0x11c/0x130 mm/kasan/report.c:572 ino_get fs/ntfs3/ntfs.h:193 [inline] ntfs_set_inode+0x65/0x70 fs/ntfs3/inode.c:514 inode_insert5+0x125/0x660 fs/inode.c:1187 iget5_locked fs/inode.c:1245 [inline] iget5_locked+0x225/0x2c0 fs/inode.c:1234 ntfs_iget5+0xd2/0x3670 fs/ntfs3/inode.c:523 ntfs_fill_super+0x3196/0x3c20 fs/ntfs3/super.c:1272 get_tree_bdev+0x44a/0x770 fs/super.c:1303 vfs_get_tree+0x8d/0x350 fs/super.c:1510 do_new_mount fs/namespace.c:3039 [inline] path_mount+0x134b/0x1e40 fs/namespace.c:3369 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __ia32_sys_mount+0x282/0x300 fs/namespace.c:3568 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f47579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7f42410 EFLAGS: 00000296 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00000000f7f42480 RCX: 000000002001f740 RDX: 000000002001f700 RSI: 0000000000000000 RDI: 00000000f7f424c0 RBP: 00000000f7f424c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 The buggy address belongs to stack of task syz-executor.1/22499 and is located at offset 127 in frame: ntfs_fill_super+0x0/0x3c20 fs/ntfs3/super.c:474 This frame has 5 objects: [48, 52) 'vcn' [64, 68) 'lcn' [80, 84) 'len' [96, 104) 'tt' [128, 136) 'ref' The buggy address belongs to the virtual mapping at [ffffc90006dd0000, ffffc90006dd9000) created by: kernel_clone+0xeb/0x890 kernel/fork.c:2915 The buggy address belongs to the physical page: page:ffffea00006e69c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1b9a7 memcg:ffff8880664d9302 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff ffff8880664d9302 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 5158, tgid 5158 (syz-executor.2), ts 515493445182, free_ts 514433810015 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2db/0x350 mm/page_alloc.c:1731 prep_new_page mm/page_alloc.c:1738 [inline] get_page_from_freelist+0xf41/0x2c00 mm/page_alloc.c:3502 __alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:4768 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2279 vm_area_alloc_pages mm/vmalloc.c:3009 [inline] __vmalloc_area_node mm/vmalloc.c:3085 [inline] __vmalloc_node_range+0xb1c/0x14a0 mm/vmalloc.c:3257 alloc_thread_stack_node kernel/fork.c:313 [inline] dup_task_struct kernel/fork.c:1116 [inline] copy_process+0x13bb/0x75c0 kernel/fork.c:2333 kernel_clone+0xeb/0x890 kernel/fork.c:2915 __do_compat_sys_ia32_clone+0x9e/0xd0 arch/x86/kernel/sys_ia32.c:254 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1302 [inline] free_unref_page_prepare+0x62e/0xcb0 mm/page_alloc.c:2564 free_unref_page+0x33/0x370 mm/page_alloc.c:2659 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x195/0x220 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x63/0x90 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:711 [inline] slab_alloc_node mm/slub.c:3451 [inline] slab_alloc mm/slub.c:3459 [inline] __kmem_cache_alloc_lru mm/slub.c:3466 [inline] kmem_cache_alloc+0x17c/0x3b0 mm/slub.c:3475 getname_flags.part.0+0x50/0x4f0 fs/namei.c:140 getname_flags+0x9e/0xe0 include/linux/audit.h:321 vfs_fstatat+0x77/0xb0 fs/stat.c:275 __do_sys_newfstatat+0x8a/0x110 fs/stat.c:446 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffffc90006dd7b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90006dd7c00: 00 00 00 00 00 00 f1 f1 f1 f1 f1 f1 04 f2 04 f2 >ffffc90006dd7c80: 04 f2 00 f2 f2 f2 00 f3 f3 f3 00 00 00 00 00 00 ^ ffffc90006dd7d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90006dd7d80: 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 f1 f1 04 ================================================================== ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 retq 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi