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: WARN_ON(irqs_disabled()) in dma_free_attrs? From: Robin Murphy Message-Id: Date: Wed, 14 Mar 2018 17:43:46 +0000 To: Christoph Hellwig Cc: Fredrik Noring , Alan Stern , Marek Szyprowski , iommu@lists.linux-foundation.org, USB list , =?UTF-8?Q?J=c3=bcrgen_Urban?= List-ID: T24gMTMvMDMvMTggMTM6MTcsIENocmlzdG9waCBIZWxsd2lnIHdyb3RlOgo+IE9uIFR1ZSwgTWFy IDEzLCAyMDE4IGF0IDEyOjExOjQ5UE0gKzAwMDAsIFJvYmluIE11cnBoeSB3cm90ZToKPj4gVGFr aW5nIGEgc3RlcCBiYWNrLCB0aG91Z2gsIHByb3ZpZGVkIHRoZSBvcmlnaW5hbCByYXRpb25hbGUg YWJvdXQKPj4gZG1hX2RlY2xhcmVfY29oZXJlbnRfbWVtb3J5KCkgaXMgc3RpbGwgdmFsaWQsIEkg d29uZGVyIGlmIHdlIHNob3VsZCBzaW1wbHkKPj4gcGVybWl0IHRoZSBVU0IgY29kZSB0byBjYWxs IGRtYV97YWxsb2MsZnJlZX1fZnJvbV9kZXZfY29oZXJlbnQoKSBkaXJlY3RseQo+PiBoZXJlIGlu c3RlYWQgb2YgYmVpbmcgImdvb2QiIGFuZCBpbmRpcmVjdGluZyB0aHJvdWdoIHRoZSB0b3AtbGV2 ZWwgRE1BIEFQSQo+PiAod2hpY2ggaXMgdGhlIHBhcnQgd2hpY2ggbGVhZHMgdG8gcHJvYmxlbXMp LiBHaXZlbiB0aGF0IGl0J3MgYSBzcGVjaWZpYyBETUEKPj4gYm91bmNlIGJ1ZmZlciBpbXBsZW1l bnRhdGlvbiB3aXRoaW4gYSBjb3JlIEFQSSwgbm90IGp1c3QgYW55IG9sZCBkcml2ZXIKPj4gY29k ZSwgSSBwZXJzb25hbGx5IHdvdWxkIGNvbnNpZGVyIHRoYXQgcmVhc29uYWJsZS4KPiAKPiBMb29r aW5nIGJhY2sgSSBkb24ndCByZWFsbHkgdW5kZXJzdGFuZCB3aHkgd2UgZXZlbiBpbmRpcmVjdCB0 aGUgImNsYXNzaWMiCj4gcGVyLWRldmljZSBkbWFfZGVjbGFyZV9jb2hlcmVudF9tZW1vcnkgdXNl IGNhc2UgdGhyb3VnaCB0aGUgRE1BIEFQSS4KCkl0IGNlcnRhaW5seSBtYWtlcyBzZW5zZSBmb3Ig ZGV2aWNlcyB3aGljaCBjYW4gZXhpc3QgaW4gYm90aCAKc2hhcmVkLW1lbW9yeSBhbmQgZGV2aWNl LWxvY2FsLW1lbW9yeSBjb25maWd1cmF0aW9ucywgc28gdGhlIGRyaXZlciAKZG9lc24ndCBoYXZl IHRvIGNhcmUgYWJvdXQgdGhlIGRldGFpbHMgKHBhcnRpY3VsYXJseSBvbiBtb2JpbGUgU29DcyAK d2hlcmUgdGhlICdsb2NhbCcgbWVtb3J5IG1pZ2h0IGp1c3QgYmUgYSBjaHVuayBvZiBzeXN0ZW0g UkFNIHJlc2VydmVkIGJ5IAp0aGUgYm9vdGxvYWRlciwgYW5kIGl0J3MganVzdCBhIG1hdHRlciBv ZiBkaWZmZXJlbnQgdXNlLWNhc2VzIG9uIAppZGVudGljYWwgaGFyZHdhcmUpLgoKPiBJdCBzZWVt cyBsaWtlIGEgcHJldHR5IGRpZmZlcmVudCB1c2UgY2FzZSB0byBtZS4gIEluIHRoZSBVU0IgY2Fz ZSB3ZQo+IGFsc28gaGF2ZSB0aGUgZm9sbG93aW5nIGFkZGl0aW9uYWwgdHdpc3QgaW4gdGhhdCBp dCBkb2Vzbid0IGV2ZW4gbmVlZAo+IHRoZSBtYXBwaW5nIHRvIGJlIGNvaGVyZW50LgoKSSdtIHBy ZXR0eSBzdXJlIGl0IGRvZXMgKGluIHRoZSBzZW5zZSB0aGF0IGl0IG5lZWRzIHRvIGVuc3VyZSB0 aGUgYXJjaCAKY29kZSBtYWtlcyB0aGUgbWFwcGluZyBub24tY2FjaGVhYmxlKSwgb3RoZXJ3aXNl IEkgY2FuJ3Qgc2VlIGhvdyB0aGUgCmJvdW5jaW5nIGNvdWxkIHdvcmsgcHJvcGVybHkuIEkgdGhp bmsgdGhlIGxhc3QgYml0IG9mIHRoZSBjb21tZW50IGFib3ZlIApoY2RfYWxsb2NfY29oZXJlbnQo KSBpcyBhIGJpdCBtaXNsZWFkaW5nLgoKPiBTbyBtYXliZSBmb3Igbm93IHRoZSBxdWljayBmaXgg aXMgdG8gbW92ZSB0aGUgc2xlZXAgY2hlY2sgYXMgc3VnZ2VzdGVkCj4gZWFybGllciBpbiB0aGlz IHRocmVhZCwgYnV0IGluIHRoZSBsb25nIHJ1biB3ZSBwcm9iYWJseSBuZWVkIHRvIGRvIHNvbWUK PiBtYWpvciByZXdvcmsgb2YgaG93IGRtYV9kZWNsYXJlX2NvaGVyZW50X21lbW9yeSBhbmQgZnJp ZW5kcyB3b3JrLgoKTWF5YmU7IEkgZG8gdGhpbmsgdGhlIHNwZWNpZmljIGhjZF9hbGxvY19jb2hl cmVudCgpIGNhc2UgY291bGQgc3RpbGwgYmUgCmZpeGVkIHdpdGhpbiB0aGUgc2NvcGUgb2YgdGhl IGV4aXN0aW5nIGNvZGUsIGJ1dCBpdCdzIG5vdCBxdWl0ZSBhcyBjbGVhbiAKYW5kIHN0cmFpZ2h0 Zm9yd2FyZCBhcyBJIGZpcnN0IHRob3VnaHQsIGFuZCB0aGUgcHJhY3RpY2FsIGltcGFjdCBvZiAK dHdlYWtpbmcgdGhlIFdBUk4gc2hvdWxkIGJlIGVmZmVjdGl2ZWx5IHplcm8gZGVzcGl0ZSB0aGUg dGhlb3JldGljYWwgCmVkZ2UgY2FzZXMgaXQgb3BlbnMgdXAuIERvIHlvdSB3YW50IG1lIHRvIHdy aXRlIGl0IHVwIGFzIGEgcHJvcGVyIHBhdGNoPwoKUm9iaW4uCi0tLQpUbyB1bnN1YnNjcmliZSBm cm9tIHRoaXMgbGlzdDogc2VuZCB0aGUgbGluZSAidW5zdWJzY3JpYmUgbGludXgtdXNiIiBpbgp0 aGUgYm9keSBvZiBhIG1lc3NhZ2UgdG8gbWFqb3Jkb21vQHZnZXIua2VybmVsLm9yZwpNb3JlIG1h am9yZG9tbyBpbmZvIGF0ICBodHRwOi8vdmdlci5rZXJuZWwub3JnL21ham9yZG9tby1pbmZvLmh0 bWwK