usb usb9: usbfs: interface 0 claimed by usbfs while 'syz-executor.1' sets config #1 usb usb9: usbfs: interface 0 claimed by usbfs while 'syz-executor.2' sets config #1 usb usb9: usbfs: interface 0 claimed by usbfs while 'syz-executor.5' sets config #1 ntfs: (device loop4): is_boot_sector_ntfs(): Invalid end of sector marker. ================================================================== BUG: KASAN: use-after-free in ntfs_attr_find+0xb48/0xc20 fs/ntfs/attrib.c:611 Read of size 2 at addr ffff88805d8aee49 by task syz-executor.4/10901 CPU: 1 PID: 10901 Comm: syz-executor.4 Not tainted 4.14.291-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351 kasan_report mm/kasan/report.c:409 [inline] __asan_report_load_n_noabort+0x6b/0x80 mm/kasan/report.c:440 ntfs_attr_find+0xb48/0xc20 fs/ntfs/attrib.c:611 ntfs_attr_lookup+0xeca/0x1f30 fs/ntfs/attrib.c:1207 ntfs_read_inode_mount+0x726/0x2060 fs/ntfs/inode.c:1879 ntfs_fill_super+0x9a6/0x7170 fs/ntfs/super.c:2871 mount_bdev+0x2b3/0x360 fs/super.c:1134 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7ff5c9af07aa RSP: 002b:00007ff5c8463f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007ff5c9af07aa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ff5c8463fe0 RBP: 00007ff5c8464020 R08: 00007ff5c8464020 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007ff5c8463fe0 R15: 0000000020086e00 Allocated by task 10050: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 __do_kmalloc_node mm/slab.c:3682 [inline] __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3696 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0x96/0x510 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:980 [inline] sock_wmalloc+0xa5/0xf0 net/core/sock.c:1953 __ip6_append_data.isra.0+0x217a/0x2870 net/ipv6/ip6_output.c:1467 ip6_append_data+0x1b8/0x2f0 net/ipv6/ip6_output.c:1623 rawv6_sendmsg+0x108a/0x2fe0 net/ipv6/raw.c:955 inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 sock_no_sendpage+0xe2/0x110 net/core/sock.c:2610 kernel_sendpage net/socket.c:3407 [inline] sock_sendpage+0xdf/0x140 net/socket.c:871 pipe_to_sendpage+0x226/0x2d0 fs/splice.c:451 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x326/0x7a0 fs/splice.c:626 splice_from_pipe fs/splice.c:661 [inline] generic_splice_sendpage+0xc1/0x110 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1145 [inline] SYSC_splice fs/splice.c:1400 [inline] SyS_splice+0xd59/0x1380 fs/splice.c:1380 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb Freed by task 10050: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3496 [inline] kfree+0xc9/0x250 mm/slab.c:3815 skb_free_head net/core/skbuff.c:563 [inline] skb_release_data+0x5f6/0x820 net/core/skbuff.c:583 skb_release_all net/core/skbuff.c:640 [inline] __kfree_skb net/core/skbuff.c:654 [inline] kfree_skb+0xe7/0x390 net/core/skbuff.c:672 ip6_input_finish+0x880/0x1580 net/ipv6/ip6_input.c:308 NF_HOOK include/linux/netfilter.h:250 [inline] ip6_input+0xb9/0x300 net/ipv6/ip6_input.c:327 dst_input include/net/dst.h:476 [inline] ip6_rcv_finish+0x23b/0x7a0 net/ipv6/ip6_input.c:71 NF_HOOK include/linux/netfilter.h:250 [inline] ipv6_rcv+0xac7/0x1b60 net/ipv6/ip6_input.c:208 __netif_receive_skb_core+0x15ee/0x2a30 net/core/dev.c:4474 __netif_receive_skb+0x27/0x1a0 net/core/dev.c:4512 process_backlog+0x218/0x6f0 net/core/dev.c:5195 napi_poll net/core/dev.c:5604 [inline] net_rx_action+0x466/0xfd0 net/core/dev.c:5670 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 The buggy address belongs to the object at ffff88805d8acf80 which belongs to the cache kmalloc-8192 of size 8192 The buggy address is located 7881 bytes inside of 8192-byte region [ffff88805d8acf80, ffff88805d8aef80) The buggy address belongs to the page: page:ffffea0001762b00 count:1 mapcount:0 mapping:ffff88805d8acf80 index:0x0 compound_mapcount: 0 flags: 0xfff00000008100(slab|head) raw: 00fff00000008100 ffff88805d8acf80 0000000000000000 0000000100000001 raw: ffffea0001762a20 ffffea0001762c20 ffff88813fe65080 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88805d8aed00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805d8aed80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88805d8aee00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88805d8aee80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805d8aef00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================