vhci_hcd: invalid port number 108 ================================================================== BUG: KASAN: slab-out-of-bounds in vhci_hub_control+0x1b88/0x1bf0 drivers/usb/usbip/vhci_hcd.c:441 Read of size 4 at addr ffff8801ce61b7bc by task syz-executor5/19133 CPU: 1 PID: 19133 Comm: syz-executor5 Not tainted 4.19.0-rc1+ #217 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0x242/0x30d mm/kasan/report.c:412 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432 vhci_hub_control+0x1b88/0x1bf0 drivers/usb/usbip/vhci_hcd.c:441 rh_call_control drivers/usb/core/hcd.c:679 [inline] rh_urb_enqueue drivers/usb/core/hcd.c:838 [inline] usb_hcd_submit_urb+0x184a/0x2160 drivers/usb/core/hcd.c:1651 usb_submit_urb+0x895/0x14d0 drivers/usb/core/urb.c:570 usb_start_wait_urb+0x140/0x360 drivers/usb/core/message.c:57 usb_internal_control_msg drivers/usb/core/message.c:101 [inline] usb_control_msg+0x332/0x4e0 drivers/usb/core/message.c:152 proc_control+0x99b/0xef0 drivers/usb/core/devio.c:1106 usbdev_do_ioctl+0x1eb4/0x3b30 drivers/usb/core/devio.c:2394 Unknown ioctl 1074013193 Unknown ioctl 1074013193 usbdev_ioctl+0x25/0x30 drivers/usb/core/devio.c:2551 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457099 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0943c2fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0943c306d4 RCX: 0000000000457099 RDX: 0000000020000000 RSI: 00000000c0185500 RDI: 0000000000000003 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004ce8f0 R14: 00000000004c4e0b R15: 0000000000000000 Allocated by task 4609: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553 kmem_cache_alloc_trace+0x152/0x730 mm/slab.c:3620 kmalloc include/linux/slab.h:513 [inline] kzalloc include/linux/slab.h:707 [inline] kset_create lib/kobject.c:924 [inline] kset_create_and_add+0x51/0x190 lib/kobject.c:967 register_queue_kobjects net/core/net-sysfs.c:1527 [inline] netdev_register_kobject+0x1bf/0x380 net/core/net-sysfs.c:1755 register_netdevice+0x99f/0x1100 net/core/dev.c:8480 __ip_tunnel_create+0x361/0x550 net/ipv4/ip_tunnel.c:282 ip_tunnel_init_net+0x3f8/0xad0 net/ipv4/ip_tunnel.c:1020 erspan_init_net+0x29/0x30 net/ipv4/ip_gre.c:1651 ops_init+0x101/0x560 net/core/net_namespace.c:129 setup_net+0x3d9/0x980 net/core/net_namespace.c:314 copy_net_ns+0x2b8/0x4d0 net/core/net_namespace.c:437 create_new_namespaces+0x6ad/0x900 kernel/nsproxy.c:107 unshare_nsproxy_namespaces+0xc3/0x1f0 kernel/nsproxy.c:206 ksys_unshare+0x723/0xfb0 kernel/fork.c:2490 __do_sys_unshare kernel/fork.c:2558 [inline] __se_sys_unshare kernel/fork.c:2556 [inline] __x64_sys_unshare+0x31/0x40 kernel/fork.c:2556 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 1943: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3498 [inline] kfree+0xd9/0x210 mm/slab.c:3813 call_usermodehelper_freeinfo kernel/umh.c:45 [inline] umh_complete+0x89/0xa0 kernel/umh.c:59 call_usermodehelper_exec_async+0x763/0xa80 kernel/umh.c:117 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 The buggy address belongs to the object at ffff8801ce61b700 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 188 bytes inside of 192-byte region [ffff8801ce61b700, ffff8801ce61b7c0) The buggy address belongs to the page: page:ffffea00073986c0 count:1 mapcount:0 mapping:ffff8801dac00040 index:0x0 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea0007397ac8 ffffea0007398908 ffff8801dac00040 raw: 0000000000000000 ffff8801ce61b000 0000000100000010 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801ce61b680: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8801ce61b700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8801ce61b780: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8801ce61b800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801ce61b880: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ==================================================================