From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: usb: dwc3: of-simple: fix use-after-free on remove From: "Rafael J. Wysocki" Message-Id: <3482290.zkxG0aztPp@aspire.rjw.lan> Date: Wed, 20 Jun 2018 14:54:10 +0200 To: Johan Hovold Cc: Tony Lindgren , Felipe Balbi , Roger Quadros , Tero Kristo , Greg Kroah-Hartman , Alan Stern , linux-usb@vger.kernel.org, "Nori, Sekhar" , Grygorii Strashko , Nishanth Menon , linux-pm@vger.kernel.org List-ID: T24gV2VkbmVzZGF5LCBKdW5lIDIwLCAyMDE4IDI6MjM6NDYgUE0gQ0VTVCBKb2hhbiBIb3ZvbGQg d3JvdGU6Cj4gT24gV2VkLCBKdW4gMjAsIDIwMTggYXQgMDI6MTY6NTlBTSAtMDcwMCwgVG9ueSBM aW5kZ3JlbiB3cm90ZToKPiA+IEhpLAo+ID4gCj4gPiBBZGRpbmcgUmFmYWVsIGFuZCBsaW51eC1w bSB0byBDYyBhcyB3ZWxsLgo+ID4gCj4gPiAqIEZlbGlwZSBCYWxiaSA8YmFsYmlAa2VybmVsLm9y Zz4gWzE4MDYxOSAwMToyM106Cj4gPiA+IFRoaXMgaXMgYSBkaXJlY3QgY29uc2VxdWVuY2Ugb2Yg bm90IHBheWluZyBhdHRlbnRpb24gdG8gdGhlIG9yZGVyIG9mCj4gPiA+IHRoaW5ncy4gSWYgZHJp dmVyIHdlcmUgdG8gYXNzdW1lIHRoYXQgcG1fZG9tYWluLT5hY3RpdmF0ZSgpIHdvdWxkIGRvIHRo ZQo+ID4gPiByaWdodCB0aGluZyBmb3IgdGhlIGRldmljZSAtLSBtZWFuaW5nIHRoYXQgcHJvYmUg d291bGQgcnVuIHdpdGggYW4KPiA+ID4gYWN0aXZlIGRldmljZSAtLSwgdGhlbiB3ZSB3b3VsZG4n dCBuZWVkIHRoYXQgcG1fcnVudGltZV9nZXQoKSBjYWxsIG9uCj4gPiA+IHByb2JlIGF0IGFsbC4g UmF0aGVyIHdlIHdvdWxkIGZvbGxvdyB0aGUgc2VxdWVuY2U6Cj4gPiA+IAo+ID4gPiAJcG1fcnVu dGltZV9mb3JiaWQoKQo+ID4gPiAJcG1fcnVudGltZV9zZXRfYWN0aXZlKCkKPiA+ID4gCXBtX3J1 bnRpbWVfZW5hYmxlKCkKPiA+ID4gCj4gPiA+IAkvKiBkbyB5b3VyIHByb2JlIHJvdXRpbmUgKi8K PiA+ID4gCj4gPiA+IAlwbV9ydW50aW1lX3B1dF9ub2lkbGUoKQo+ID4gPiAKPiA+ID4gVGhlbiB5 b3UgcmVtb3ZlIHlvdSB3b3VsZCBuZWVkIHRvIGNhbGwgcG1fcnVudGltZV9nZXRfbm9yZXN1bWUo KSB0bwo+ID4gPiBiYWxhbmNlIG91dCB0aGUgcG1fcnVudGltZV9wdXRfbm9pZGxlKCkgdGhlcmUu Cj4gCj4gPiA+IChJZiB5b3UgbmVlZCB0byBrbm93IHdoeSB0aGUgcG1fcnVudGltZV9wdXRfbm9p ZGxlKCksIHJlbWVtYmVyIHRoYXQKPiA+ID4gcG1fcnVudGltZV9zZXRfYWN0aXZlKCkgaW5jcmVt ZW50cyB0aGUgdXNhZ2UgY291bnRlciwgc28KPiA+ID4gcG1fcnVudGltZV9wdXRfbm9pZGxlIGlz IGJhc2ljYWxseSBhbGxvd2luZyBwbV9ydW50aW1lIHRvIGhhcHBlbiBhcyBzb29uCj4gPiA+IGFz IHVzZXJzcGFjZSB3cml0ZXMgImF1dG8iIHRvIC9zeXMvLi4uLi9wb3dlci9jb250cm9sKQo+IAo+ IFRoYXQncyBub3QgY29ycmVjdDsgcG1fcnVudGltZV9zZXRfYWN0aXZlKCkgb25seSBpbmNyZW1l bnRzIHRoZSB1c2FnZQo+IGNvdW50ZXIgb2YgYSBwYXJlbnQgKHVuZGVyIHNvbWUgY2lyY3Vtc3Rh bmNlcyksIHNvIHVubGVzcyB5b3UgaGF2ZSBidXMKPiBjb2RlIGluY3JlbWVudGluZyB0aGUgdXNh Z2UgY291bnRlciBiZWZvcmUgcHJvYmUsIHRoZSBhYm92ZQo+IHBtX3J1bnRpbWVfcHV0X25vaWRs ZSgpIHdvdWxkIGFjdHVhbGx5IGludHJvZHVjZSBhbiBpbWJhbGFuY2UuCgpObywgaXQgd291bGRu J3QuICBJdCBiYWxhbmNlcyB0aGUgaW5jcmVtZW50YXRpb24gaW4gcG1fcnVudGltZV9mb3JiaWQo KS4KCj4gQW5kIG5vdGUgdGhhdCB0aGF0J3MgYWxzbyB0aGUgY2FzZSBldmVuIGlmIHlvdSBtZWFu dCB0byBzYXkgdGhhdAo+ICpwbV9ydW50aW1lX2ZvcmJpZCgpKiBpbmNyZW1lbnRzIHRoZSB1c2Fn ZSBjb3VudGVyICh3aGljaCBpdCBkb2VzKS4KCldoeSBpcyBpdD8KClN1cmVseSwgYWZ0ZXIKCnBt X3J1bnRpbWVfZm9yYmlkKGRldik7CnBtX3J1bnRpbWVfcHV0X25vaWRsZShkZXYpOwoKdGhlIHJ1 bnRpbWUgUE0gdXNhZ2UgY291bnRlciBvZiBkZXYgd2lsbCBiZSB0aGUgc2FtZSBhcyBiZWZvcmUs IHdvbid0IGl0PwotLS0KVG8gdW5zdWJzY3JpYmUgZnJvbSB0aGlzIGxpc3Q6IHNlbmQgdGhlIGxp bmUgInVuc3Vic2NyaWJlIGxpbnV4LXVzYiIgaW4KdGhlIGJvZHkgb2YgYSBtZXNzYWdlIHRvIG1h am9yZG9tb0B2Z2VyLmtlcm5lbC5vcmcKTW9yZSBtYWpvcmRvbW8gaW5mbyBhdCAgaHR0cDovL3Zn ZXIua2VybmVsLm9yZy9tYWpvcmRvbW8taW5mby5odG1sCg==