loop0: detected capacity change from 0 to 4096 ntfs3: loop0: Different NTFS' sector size (2048) and media sector size (512) ================================================================== BUG: KASAN: slab-out-of-bounds in run_unpack+0x84f/0xd00 fs/ntfs3/run.c:944 Read of size 1 at addr ffff88807d67c150 by task syz-executor212/5072 CPU: 1 PID: 5072 Comm: syz-executor212 Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:306 print_report+0x107/0x1f0 mm/kasan/report.c:417 kasan_report+0xcd/0x100 mm/kasan/report.c:517 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+0x1cfa/0x36f0 fs/ntfs3/inode.c:501 ntfs_fill_super+0x21b5/0x4370 fs/ntfs3/super.c:994 get_tree_bdev+0x400/0x620 fs/super.c:1282 vfs_get_tree+0x88/0x270 fs/super.c:1489 do_new_mount+0x289/0xad0 fs/namespace.c:3145 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674 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: 0033:0x7faa35bb5e4a Code: 48 c7 c2 b8 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe336d1fa8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007faa35bb5e4a RDX: 0000000020000180 RSI: 0000000020000040 RDI: 00007ffe336d1fc0 RBP: 00007ffe336d1fc0 R08: 00007ffe336d2000 R09: 000000000001f3dd R10: 0000000000004010 R11: 0000000000000286 R12: 0000000000000004 R13: 000055555581e2b8 R14: 0000000000004010 R15: 00007ffe336d2000 The buggy address belongs to the object at ffff88807d67c000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 336 bytes inside of 2048-byte region [ffff88807d67c000, ffff88807d67c800) The buggy address belongs to the physical page: page:ffffea0001f59e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7d678 head:ffffea0001f59e00 order:3 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff888012842000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080080008 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 5072, tgid 5072 (syz-executor212), ts 65118083861, free_ts 65060364977 prep_new_page mm/page_alloc.c:2531 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4283 __alloc_pages+0x259/0x560 mm/page_alloc.c:5549 alloc_slab_page+0xbd/0x190 mm/slub.c:1851 allocate_slab+0x5e/0x3c0 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0x782/0xe20 mm/slub.c:3193 __slab_alloc mm/slub.c:3292 [inline] __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] __kmem_cache_alloc_node+0x25b/0x340 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc+0x9e/0x190 mm/slab_common.c:981 kmalloc include/linux/slab.h:584 [inline] mi_init+0x72/0xe0 fs/ntfs3/record.c:105 ntfs_read_mft fs/ntfs3/inode.c:53 [inline] ntfs_iget5+0x309/0x36f0 fs/ntfs3/inode.c:501 ntfs_fill_super+0x21b5/0x4370 fs/ntfs3/super.c:994 get_tree_bdev+0x400/0x620 fs/super.c:1282 vfs_get_tree+0x88/0x270 fs/super.c:1489 do_new_mount+0x289/0xad0 fs/namespace.c:3145 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674 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:1446 [inline] free_pcp_prepare+0x751/0x780 mm/page_alloc.c:1496 free_unref_page_prepare mm/page_alloc.c:3369 [inline] free_unref_page+0x19/0x4c0 mm/page_alloc.c:3464 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:761 [inline] slab_alloc_node mm/slub.c:3452 [inline] kmem_cache_alloc_node+0x1dc/0x390 mm/slub.c:3497 __alloc_skb+0xd7/0x2c0 net/core/skbuff.c:552 alloc_skb include/linux/skbuff.h:1270 [inline] nlmsg_new include/net/netlink.h:1002 [inline] netlink_ack+0x369/0x12a0 net/netlink/af_netlink.c:2501 netlink_rcv_skb+0x289/0x470 net/netlink/af_netlink.c:2570 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x7e7/0x9c0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x9b3/0xcd0 net/netlink/af_netlink.c:1932 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] __sys_sendto+0x46e/0x5f0 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2125 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 Memory state around the buggy address: ffff88807d67c000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807d67c080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88807d67c100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88807d67c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807d67c200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================