loop3: detected capacity change from 0 to 4096 ntfs3: loop3: Different NTFS sector size (1024) and media sector size (512). ================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_fix_post_read+0x298/0x2c0 fs/ntfs3/fsntfs.c:193 Read of size 2 at addr ffff8880194b33fe by task syz-executor.3/1435 CPU: 2 PID: 1435 Comm: syz-executor.3 Not tainted 6.6.0-rc3-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 ntfs_fix_post_read+0x298/0x2c0 fs/ntfs3/fsntfs.c:193 ntfs_read_bh+0x93/0xa0 fs/ntfs3/fsntfs.c:1299 mi_read+0x1e7/0x650 fs/ntfs3/record.c:133 ntfs_read_mft fs/ntfs3/inode.c:70 [inline] ntfs_iget5+0x4ee/0x3960 fs/ntfs3/inode.c:532 ntfs_fill_super+0x3587/0x4330 fs/ntfs3/super.c:1423 get_tree_bdev+0x3b5/0x650 fs/super.c:1577 vfs_get_tree+0x8c/0x370 fs/super.c:1750 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __ia32_sys_mount+0x291/0x310 fs/namespace.c:3861 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 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: 0023:0xf7fb0579 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:00000000f7fab3f0 EFLAGS: 00000296 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00000000f7fab460 RCX: 000000002001f740 RDX: 000000002001f700 RSI: 0000000000000000 RDI: 00000000f7fab4a0 RBP: 000000002001f700 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 1435: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:198 [inline] __do_kmalloc_node mm/slab_common.c:1023 [inline] __kmalloc+0x60/0x100 mm/slab_common.c:1036 kmalloc include/linux/slab.h:603 [inline] mi_init+0x90/0xf0 fs/ntfs3/record.c:105 ntfs_read_mft fs/ntfs3/inode.c:54 [inline] ntfs_iget5+0x462/0x3960 fs/ntfs3/inode.c:532 ntfs_fill_super+0x3587/0x4330 fs/ntfs3/super.c:1423 get_tree_bdev+0x3b5/0x650 fs/super.c:1577 vfs_get_tree+0x8c/0x370 fs/super.c:1750 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __ia32_sys_mount+0x291/0x310 fs/namespace.c:3861 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 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 Last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 kvfree_call_rcu+0x70/0xbe0 kernel/rcu/tree.c:3372 neigh_destroy+0x435/0x670 net/core/neighbour.c:910 neigh_release include/net/neighbour.h:445 [inline] neigh_cleanup_and_release+0x1fe/0x280 net/core/neighbour.c:103 neigh_periodic_work+0x672/0xb60 net/core/neighbour.c:994 process_one_work+0x884/0x15c0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784 kthread+0x33c/0x440 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 The buggy address belongs to the object at ffff8880194b3000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 1022 bytes inside of allocated 1023-byte region [ffff8880194b3000, ffff8880194b33ff) The buggy address belongs to the physical page: page:ffffea0000652c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x194b0 head:ffffea0000652c00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000840 ffff888012c42dc0 dead000000000100 dead000000000122 raw: 0000000000000000 0000000080100010 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 9619, tgid 9613 (syz-executor.1), ts 241654263574, free_ts 240923045149 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1536 prep_new_page mm/page_alloc.c:1543 [inline] get_page_from_freelist+0xee0/0x2f20 mm/page_alloc.c:3170 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4426 __alloc_pages_node include/linux/gfp.h:237 [inline] alloc_slab_page mm/slub.c:1872 [inline] allocate_slab+0xa1/0x380 mm/slub.c:2017 new_slab mm/slub.c:2070 [inline] ___slab_alloc+0x8c7/0x1580 mm/slub.c:3223 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322 __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] __kmem_cache_alloc_node+0x131/0x340 mm/slub.c:3517 kmalloc_node_trace+0x22/0xd0 mm/slab_common.c:1127 kmalloc_node include/linux/slab.h:615 [inline] kzalloc_node include/linux/slab.h:731 [inline] sbitmap_queue_init_node+0x32d/0x550 lib/sbitmap.c:433 bt_alloc block/blk-mq-tag.c:542 [inline] blk_mq_init_bitmaps+0x59/0x170 block/blk-mq-tag.c:554 blk_mq_init_tags+0x10b/0x180 block/blk-mq-tag.c:585 blk_mq_alloc_rq_map block/blk-mq.c:3334 [inline] blk_mq_alloc_map_and_rqs+0x22b/0xec0 block/blk-mq.c:3787 __blk_mq_alloc_map_and_rqs block/blk-mq.c:3809 [inline] __blk_mq_alloc_map_and_rqs+0x124/0x1f0 block/blk-mq.c:3800 __blk_mq_alloc_rq_maps block/blk-mq.c:4311 [inline] blk_mq_alloc_set_map_and_rqs block/blk-mq.c:4342 [inline] blk_mq_alloc_tag_set+0x8d5/0x1320 block/blk-mq.c:4516 loop_add+0x33f/0xaf0 drivers/block/loop.c:2030 loop_control_ioctl+0x13a/0x630 drivers/block/loop.c:2210 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1136 [inline] free_unref_page_prepare+0x476/0xa40 mm/page_alloc.c:2312 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2405 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook mm/slab.h:762 [inline] slab_alloc_node mm/slub.c:3478 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x16c/0x3b0 mm/slub.c:3502 getname_flags.part.0+0x50/0x4d0 fs/namei.c:140 getname_flags include/linux/audit.h:321 [inline] getname+0x90/0xe0 fs/namei.c:219 do_sys_openat2+0x100/0x1e0 fs/open.c:1416 do_sys_open fs/open.c:1437 [inline] __do_compat_sys_openat fs/open.c:1497 [inline] __se_compat_sys_openat fs/open.c:1495 [inline] __ia32_compat_sys_openat+0x16e/0x200 fs/open.c:1495 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 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 Memory state around the buggy address: ffff8880194b3280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880194b3300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880194b3380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 07 ^ ffff8880194b3400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880194b3480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ---------------- 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 ret 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