loop0: detected capacity change from 0 to 4095 ntfs3: loop0: Different NTFS' sector size (1024) and media sector size (512) ================================================================== BUG: KASAN: use-after-free in run_unpack+0x84f/0xd00 fs/ntfs3/run.c:944 Read of size 1 at addr ffff88801dc43148 by task syz-executor331/3600 CPU: 0 PID: 3600 Comm: syz-executor331 Not tainted 6.0.0-rc7-syzkaller-00029-g3800a713b607 #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 run_unpack+0x84f/0xd00 fs/ntfs3/run.c:944 run_unpack_ex+0xcc/0x870 fs/ntfs3/run.c:1057 ntfs_read_mft fs/ntfs3/inode.c:368 [inline] ntfs_iget5+0x1cf2/0x36a0 fs/ntfs3/inode.c:501 ntfs_loadlog_and_replay+0x1ac/0x5c0 fs/ntfs3/fsntfs.c:272 ntfs_fill_super+0x2333/0x42a0 fs/ntfs3/super.c:1018 get_tree_bdev+0x400/0x620 fs/super.c:1323 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: 0033:0x7f3b8fe4126a Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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:00007ffd41c81b08 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffd41c81b60 RCX: 00007f3b8fe4126a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd41c81b20 RBP: 00007ffd41c81b20 R08: 00007ffd41c81b60 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000286 R12: 0000000020000338 R13: 0000000000000003 R14: 0000000000000004 R15: 000000000000000d Allocated by task 3600: 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] __kmalloc+0x226/0x370 mm/slub.c:4429 kmalloc include/linux/slab.h:605 [inline] mi_init+0x72/0xe0 fs/ntfs3/record.c:105 ntfs_read_mft fs/ntfs3/inode.c:53 [inline] ntfs_iget5+0x309/0x36a0 fs/ntfs3/inode.c:501 ntfs_fill_super+0x2127/0x42a0 fs/ntfs3/super.c:994 get_tree_bdev+0x400/0x620 fs/super.c:1323 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 Freed by task 3600: 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:1759 [inline] slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1785 slab_free mm/slub.c:3539 [inline] kfree+0xda/0x210 mm/slub.c:4567 mi_clear fs/ntfs3/ntfs_fs.h:1102 [inline] ni_clear+0x32e/0x3e0 fs/ntfs3/frecord.c:133 evict+0x2a4/0x620 fs/inode.c:665 ntfs_fill_super+0x229a/0x42a0 fs/ntfs3/super.c:1004 get_tree_bdev+0x400/0x620 fs/super.c:1323 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 The buggy address belongs to the object at ffff88801dc43000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 328 bytes inside of 1024-byte region [ffff88801dc43000, ffff88801dc43400) The buggy address belongs to the physical page: page:ffffea0000771000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1dc40 head:ffffea0000771000 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0001e08c00 dead000000000002 ffff888012041dc0 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 42, tgid 42 (kworker/u4:2), ts 5903211796, free_ts 0 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:5549 __alloc_pages_node include/linux/gfp.h:243 [inline] alloc_slab_page+0x2e/0xf0 mm/slub.c:1831 allocate_slab+0x5e/0x520 mm/slub.c:1974 new_slab mm/slub.c:2034 [inline] ___slab_alloc+0x3ee/0xc40 mm/slub.c:3036 __slab_alloc mm/slub.c:3123 [inline] slab_alloc_node mm/slub.c:3214 [inline] kmem_cache_alloc_node_trace+0x29c/0x360 mm/slub.c:3312 kmalloc_node include/linux/slab.h:618 [inline] kzalloc_node include/linux/slab.h:744 [inline] sbitmap_queue_init_node+0x174/0x860 lib/sbitmap.c:438 bt_alloc block/blk-mq-tag.c:535 [inline] blk_mq_init_bitmaps block/blk-mq-tag.c:549 [inline] blk_mq_init_tags+0x149/0x270 block/blk-mq-tag.c:578 blk_mq_alloc_rq_map block/blk-mq.c:3150 [inline] blk_mq_alloc_map_and_rqs+0xb6/0x990 block/blk-mq.c:3602 __blk_mq_alloc_map_and_rqs block/blk-mq.c:3624 [inline] __blk_mq_alloc_rq_maps block/blk-mq.c:4140 [inline] blk_mq_alloc_set_map_and_rqs+0x1b6/0x890 block/blk-mq.c:4171 blk_mq_alloc_tag_set+0x714/0xcc0 block/blk-mq.c:4330 do_floppy_init+0x194/0xc54 drivers/block/floppy.c:4591 async_run_entry_fn+0xa6/0x400 kernel/async.c:127 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 page_owner free stack trace missing Memory state around the buggy address: ffff88801dc43000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801dc43080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88801dc43100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88801dc43180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801dc43200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================