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: gadget: f_hid: fix deadlock in f_hidg_write() From: James Bottomley Message-Id: <1552577867.3042.17.camel@HansenPartnership.com> Date: Thu, 14 Mar 2019 08:37:47 -0700 To: Radoslav Gerganov , "balbi@kernel.org" Cc: "gregkh@linuxfoundation.org" , "linux-usb@vger.kernel.org" , Krzysztof Opasiak List-ID: T24gVHVlLCAyMDE5LTAzLTA1IGF0IDEwOjEwICswMDAwLCBSYWRvc2xhdiBHZXJnYW5vdiB3cm90 ZToKPiBJbiBmX2hpZGdfd3JpdGUoKSB0aGUgd3JpdGVfc3BpbmxvY2sgaXMgYWNxdWlyZWQgYmVm b3JlIGNhbGxpbmcKPiB1c2JfZXBfcXVldWUoKSB3aGljaCBjYXVzZXMgYSBkZWFkbG9jayB3aGVu IGR1bW15X2hjZCBpcyBiZWluZyB1c2VkLgo+IFRoaXMgaXMgYmVjYXVzZSBkdW1teV9xdWV1ZSgp IGNhbGxiYWNrcyBpbnRvIGZfaGlkZ19yZXFfY29tcGxldGUoKQo+IHdoaWNoIHRyaWVzIHRvIGFj cXVpcmUgdGhlIHNhbWUgc3BpbmxvY2suIFRoaXMgaXMgKHBhcnQgb2YpIHRoZQo+IGJhY2t0cmFj ZSB3aGVuIHRoZSBkZWFkbG9jayBvY2N1cnM6Cj4gCj4gICAweGZmZmZmZmZmYzA2YjE0MTAgaW4g Zl9oaWRnX3JlcV9jb21wbGV0ZQo+ICAgMHhmZmZmZmZmZmMwNmE1OTBhIGluIHVzYl9nYWRnZXRf Z2l2ZWJhY2tfcmVxdWVzdAo+ICAgMHhmZmZmZmZmZmMwNmNmZmYyIGluIGR1bW15X3F1ZXVlCj4g ICAweGZmZmZmZmZmYzA2YTRiOTYgaW4gdXNiX2VwX3F1ZXVlCj4gICAweGZmZmZmZmZmYzA2YjFl YjYgaW4gZl9oaWRnX3dyaXRlCj4gICAweGZmZmZmZmZmODEyNzczMGIgaW4gX192ZnNfd3JpdGUK PiAgIDB4ZmZmZmZmZmY4MTI3NzRkMSBpbiB2ZnNfd3JpdGUKPiAgIDB4ZmZmZmZmZmY4MTI3Nzcy NSBpbiBTWVNDX3dyaXRlCj4gCj4gRml4IHRoaXMgYnkgcmVsZWFzaW5nIHRoZSB3cml0ZV9zcGlu bG9jayBiZWZvcmUgY2FsbGluZwo+IHVzYl9lcF9xdWV1ZSgpCgpUaGlzIGZpeGVzIGEgdXNiX2Zf aGlkIGRlYWRsb2NrIEkndmUgYWxzbyBiZWVuIHNlZWluZyB3aXRoIGEgRklETyBrZXkKZW11bGF0 b3IuICBUaGlzIGlzIGEgc2VyaW91cyBidWcgaW4gdGhhdCBpdCBicmluZ3MgZG93biBteSBlbnRp cmUKc3lzdGVtIGlmIEkgdXNlIHRoZSBoaWQgZ2FkZ2V0IGluIGFueSB3YXksIHNvIGNhbiB3ZSBw bGVhc2UgZ2V0IGl0CmFwcGxpZWQ/ICBJdCB0dXJucyBvdXQgdG8gaGF2ZSBiZWVuIGludHJvZHVj ZWQgYnkgdGhpcyBjb21taXQ6Cgpjb21taXQgNzQ5NDk0YjZiZGJiYWYwODk5YWExYzYyYTFhZDc0 Y2Q3NDdiY2U0NwpBdXRob3I6IEtyenlzenRvZiBPcGFzaWFrIDxrb3Bhc2lhazkwQGdtYWlsLmNv bT4KRGF0ZTogICBUdWUgSmFuIDI0IDAzOjI3OjI0IDIwMTcgKzAxMDAKCiAgICB1c2I6IGdhZGdl dDogZl9oaWQ6IGZpeDogTW92ZSBJTiByZXF1ZXN0IGFsbG9jYXRpb24gdG8gc2V0X2FsdCgpCgpT byB5b3UgY2FuIGFkZAoKUmV2aWV3ZWQtYnk6IEphbWVzIEJvdHRvbWxleSA8SmFtZXMuQm90dG9t bGV5QEhhbnNlblBhcnRuZXJzaGlwLmNvbT4KVGVzdGVkLWJ5OiBKYW1lcyBCb3R0b21sZXkgPEph bWVzLkJvdHRvbWxleUBIYW5zZW5QYXJ0bmVyc2hpcC5jb20+CkNjOiBzdGFibGVAdmdlci5rZXJu ZWwub3JnICMgNC4xMSsKRml4ZXM6IDc0OTQ5NGI2YmRiYiAoInVzYjogZ2FkZ2V0OiBmX2hpZDog Zml4OiBNb3ZlIElOIHJlcXVlc3QgYWxsb2NhdGlvbiB0byBzZXRfYWx0KCkiKQoKSmFtZXMK