Unknown ioctl 35094
vhci_hcd: invalid port number 76
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BUG: KASAN: use-after-free in vhci_hub_control+0x1b6d/0x1be0 drivers/usb/usbip/vhci_hcd.c:441
Read of size 4 at addr ffff8801cddbc4bc by task syz-executor3/6587
CPU: 0 PID: 6587 Comm: syz-executor3 Not tainted 4.19.0-rc8+ #285
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+0x1c4/0x2b4 lib/dump_stack.c:113
print_address_description.cold.8+0x9/0x1ff mm/kasan/report.c:256
Unknown ioctl 35094
kasan_report_error mm/kasan/report.c:354 [inline]
kasan_report.cold.9+0x242/0x309 mm/kasan/report.c:412
__asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432
vhci_hub_control+0x1b6d/0x1be0 drivers/usb/usbip/vhci_hcd.c:441
Unknown ioctl -2142720410
rh_call_control drivers/usb/core/hcd.c:679 [inline]
rh_urb_enqueue drivers/usb/core/hcd.c:838 [inline]
usb_hcd_submit_urb+0x17bb/0x20a0 drivers/usb/core/hcd.c:1651
usb_submit_urb+0x893/0x14e0 drivers/usb/core/urb.c:570
usb_start_wait_urb+0x13d/0x370 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+0x1eb8/0x3b50 drivers/usb/core/devio.c:2412
audit: type=1804 audit(1539702746.600:65): pid=6594 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor5" name="/group.stat" dev="sda1" ino=16507 res=1
Unknown ioctl 35094
usbdev_ioctl+0x25/0x30 drivers/usb/core/devio.c:2569
Unknown ioctl -2142720410
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685
audit: type=1804 audit(1539702746.620:66): pid=6600 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor5" name="/group.stat" dev="sda1" ino=16507 res=1
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: 0033:0x457569
Code: fd b3 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 b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f5d62248c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 0000000020000000 RSI: 00000000c0185500 RDI: 0000000000000003
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5d622496d4
R13: 00000000004bf6ac R14: 00000000004cf598 R15: 00000000ffffffff
Allocated by task 5971:
save_stack+0x43/0xd0 mm/kasan/kasan.c:448
set_track mm/kasan/kasan.c:460 [inline]
kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:553
kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490
kmem_cache_alloc+0x12e/0x730 mm/slab.c:3554
vm_area_alloc+0x7a/0x1d0 kernel/fork.c:315
mmap_region+0x9d4/0x1cd0 mm/mmap.c:1732
do_mmap+0xa22/0x1230 mm/mmap.c:1535
do_mmap_pgoff include/linux/mm.h:2298 [inline]
vm_mmap_pgoff+0x213/0x2c0 mm/util.c:357
vm_mmap+0x90/0xc0 mm/util.c:376
elf_map+0x197/0x2b0 fs/binfmt_elf.c:374
load_elf_interp fs/binfmt_elf.c:587 [inline]
load_elf_binary+0x1ef4/0x5620 fs/binfmt_elf.c:1087
search_binary_handler+0x17d/0x570 fs/exec.c:1653
exec_binprm fs/exec.c:1695 [inline]
__do_execve_file.isra.33+0x162f/0x2540 fs/exec.c:1819
do_execveat_common fs/exec.c:1866 [inline]
do_execve fs/exec.c:1883 [inline]
__do_sys_execve fs/exec.c:1964 [inline]
__se_sys_execve fs/exec.c:1959 [inline]
__x64_sys_execve+0x8f/0xc0 fs/exec.c:1959
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Freed by task 5971:
Unknown ioctl 35094
save_stack+0x43/0xd0 mm/kasan/kasan.c:448
set_track mm/kasan/kasan.c:460 [inline]
__kasan_slab_free+0x102/0x150 mm/kasan/kasan.c:521
kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
Unknown ioctl 8836
__cache_free mm/slab.c:3498 [inline]
kmem_cache_free+0x83/0x290 mm/slab.c:3756
vm_area_free+0x1c/0x20 kernel/fork.c:334
remove_vma+0x13a/0x180 mm/mmap.c:185
exit_mmap+0x364/0x590 mm/mmap.c:3104
__mmput kernel/fork.c:1001 [inline]
mmput+0x247/0x610 kernel/fork.c:1022
exit_mm kernel/exit.c:545 [inline]
do_exit+0xe6f/0x2610 kernel/exit.c:854
do_group_exit+0x177/0x440 kernel/exit.c:970
kobject: 'kvm' (0000000088cca35a): fill_kobj_path: path = '/devices/virtual/misc/kvm'
__do_sys_exit_group kernel/exit.c:981 [inline]
__se_sys_exit_group kernel/exit.c:979 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:979
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
The buggy address belongs to the object at ffff8801cddbc420
which belongs to the cache vm_area_struct of size 200
The buggy address is located 156 bytes inside of
200-byte region [ffff8801cddbc420, ffff8801cddbc4e8)
Unknown ioctl -2142720410
The buggy address belongs to the page:
page:ffffea0007376f00 count:1 mapcount:0 mapping:ffff8801da96c840 index:0xffff8801cddbcc60
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffffea00070fae08 ffffea00075c0ec8 ffff8801da96c840
raw: ffff8801cddbcc60 ffff8801cddbc000 0000000100000006 0000000000000000
kobject: 'kvm' (0000000088cca35a): kobject_uevent_env
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8801cddbc380: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
ffff8801cddbc400: fc fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8801cddbc480: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc
^
kobject: 'kvm' (0000000088cca35a): kobject_uevent_env
ffff8801cddbc500: fc fc fc fc fc fb fb fb fb fb fb fb fb fb fb fb
ffff8801cddbc580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
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