syzbot

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BUG: KMSAN: uninit-value in destroy_async_on_interface drivers/usb/core/devio.c:655 [inline]
BUG: KMSAN: uninit-value in driver_disconnect+0x4c6/0x810 drivers/usb/core/devio.c:699
CPU: 1 PID: 8554 Comm: syz-executor4 Not tainted 4.19.0-rc1+ #40
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+0x14b/0x190 lib/dump_stack.c:113
 kmsan_report+0x183/0x2b0 mm/kmsan/kmsan.c:956
 __msan_warning+0x70/0xc0 mm/kmsan/kmsan_instr.c:645
 destroy_async_on_interface drivers/usb/core/devio.c:655 [inline]
 driver_disconnect+0x4c6/0x810 drivers/usb/core/devio.c:699
 usb_unbind_interface+0x3da/0x1100 drivers/usb/core/driver.c:423
 __device_release_driver drivers/base/dd.c:966 [inline]
 device_release_driver_internal+0x94c/0xd90 drivers/base/dd.c:999
 device_release_driver+0x4b/0x60 drivers/base/dd.c:1024
 usb_driver_release_interface+0x20f/0x2b0 drivers/usb/core/driver.c:604
 proc_disconnect_claim drivers/usb/core/devio.c:2281 [inline]
 usbdev_do_ioctl+0xad64/0xbb80 drivers/usb/core/devio.c:2523
 usbdev_ioctl+0x8c/0xb0 drivers/usb/core/devio.c:2551
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0xc77/0x2660 fs/ioctl.c:687
 ksys_ioctl fs/ioctl.c:702 [inline]
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl+0x1da/0x270 fs/ioctl.c:707
 __x64_sys_ioctl+0x4a/0x70 fs/ioctl.c:707
 do_syscall_64+0xb8/0x100 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
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:00007f6af5e3ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6af5e3f6d4 RCX: 0000000000457099
RDX: 0000000020000080 RSI: 000000008108551b RDI: 0000000000000003
RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004ce8f0 R14: 00000000004c4e0b R15: 0000000000000000

Local variable description: ----oldbit.i.i.i.i@_cond_resched
Variable was created at:
 should_resched arch/x86/include/asm/preempt.h:97 [inline]
 _cond_resched+0x27/0xc0 kernel/sched/core.c:4970
 __do_page_fault+0x708/0x17e0 arch/x86/mm/fault.c:1339
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