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Fri, 24 Jun 2022 23:47:25 +0000 Message-ID: Subject: Re: [PATCH] lib/sbitmap: Fix invalid loop in __sbitmap_queue_get_batch() From: Martin Wilck To: wuchi , axboe@kernel.dk, andriy.shevchenko@linux.intel.com Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org Date: Sat, 25 Jun 2022 01:47:24 +0200 In-Reply-To: <20220605145835.26916-1-wuchi.zero@gmail.com> References: <20220605145835.26916-1-wuchi.zero@gmail.com> Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: base64 User-Agent: Evolution 3.44.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org T24gU3VuLCAyMDIyLTA2LTA1IGF0IDIyOjU4ICswODAwLCB3dWNoaSB3cm90ZToKPiAxLiBHZXR0 aW5nIG5leHQgaW5kZXggYmVmb3JlIGNvbnRpbnVlIGJyYW5jaC4KPiAyLiBDaGVja2luZyBmcmVl IGJpdHMgd2hlbiBzZXR0aW5nIHRoZSB0YXJnZXQgYml0cy4gT3RoZXJ3aXNlLAo+IGl0IG1heSBy ZXVzZSB0aGUgYnVzeWluZyBiaXRzLgo+IAo+IFNpZ25lZC1vZmYtYnk6IHd1Y2hpIDx3dWNoaS56 ZXJvQGdtYWlsLmNvbT4KClJldmlld2VkLWJ5OiBNYXJ0aW4gV2lsY2sgPG13aWxja0BzdXNlLmNv bT4KCj4gLS0tCj4goGxpYi9zYml0bWFwLmMgfCA1ICsrKystCj4goDEgZmlsZSBjaGFuZ2VkLCA0 IGluc2VydGlvbnMoKyksIDEgZGVsZXRpb24oLSkKPiAKPiBkaWZmIC0tZ2l0IGEvbGliL3NiaXRt YXAuYyBiL2xpYi9zYml0bWFwLmMKPiBpbmRleCBhZTRmZDRkZTllYmUuLjI5ZWIwNDg0MjE1YSAx MDA2NDQKPiAtLS0gYS9saWIvc2JpdG1hcC5jCj4gKysrIGIvbGliL3NiaXRtYXAuYwo+IEBAIC01 MjgsNyArNTI4LDcgQEAgdW5zaWduZWQgbG9uZyBfX3NiaXRtYXBfcXVldWVfZ2V0X2JhdGNoKHN0 cnVjdAo+IHNiaXRtYXBfcXVldWUgKnNicSwgaW50IG5yX3RhZ3MsCj4goAo+IKCgoKCgoKCgoKCg oKCgoKBzYml0bWFwX2RlZmVycmVkX2NsZWFyKG1hcCk7Cj4goKCgoKCgoKCgoKCgoKCgoGlmICht YXAtPndvcmQgPT0gKDFVTCA8PCAobWFwX2RlcHRoIC0gMSkpIC0gMSkKPiAtoKCgoKCgoKCgoKCg oKCgoKCgoKCgoKBjb250aW51ZTsKPiAroKCgoKCgoKCgoKCgoKCgoKCgoKCgoKBnb3RvIG5leHQ7 Cj4goAo+IKCgoKCgoKCgoKCgoKCgoKBuciA9IGZpbmRfZmlyc3RfemVyb19iaXQoJm1hcC0+d29y ZCwgbWFwX2RlcHRoKTsKPiCgoKCgoKCgoKCgoKCgoKCgaWYgKG5yICsgbnJfdGFncyA8PSBtYXBf ZGVwdGgpIHsKPiBAQCAtNTM5LDYgKzUzOSw4IEBAIHVuc2lnbmVkIGxvbmcgX19zYml0bWFwX3F1 ZXVlX2dldF9iYXRjaChzdHJ1Y3QKPiBzYml0bWFwX3F1ZXVlICpzYnEsIGludCBucl90YWdzLAo+ IKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoGdldF9tYXNrID0gKCgxVUwgPDwgbWFwX3RhZ3MpIC0g MSkgPDwgbnI7Cj4goKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgZG8gewo+IKCgoKCgoKCgoKCgoKCg oKCgoKCgoKCgoKCgoKCgoKCgdmFsID0gUkVBRF9PTkNFKG1hcC0+d29yZCk7Cj4gK6CgoKCgoKCg oKCgoKCgoKCgoKCgoKCgoKCgoKCgoKBpZiAoKHZhbCAmIH5nZXRfbWFzaykgIT0gdmFsKQo+ICug oKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKBnb3RvIG5leHQ7Cj4goKCgoKCg oKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKByZXQgPSBhdG9taWNfbG9uZ19jbXB4Y2hnKHB0ciwg dmFsLAo+IGdldF9tYXNrIHwgdmFsKTsKPiCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKB9IHdoaWxl IChyZXQgIT0gdmFsKTsKPiCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKBnZXRfbWFzayA9IChnZXRf bWFzayAmIH5yZXQpID4+IG5yOwo+IEBAIC01NDksNiArNTUxLDcgQEAgdW5zaWduZWQgbG9uZyBf X3NiaXRtYXBfcXVldWVfZ2V0X2JhdGNoKHN0cnVjdAo+IHNiaXRtYXBfcXVldWUgKnNicSwgaW50 IG5yX3RhZ3MsCj4goKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKByZXR1cm4gZ2V0X21h c2s7Cj4goKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgfQo+IKCgoKCgoKCgoKCgoKCgoKB9Cj4gK25l eHQ6Cj4goKCgoKCgoKCgoKCgoKCgoC8qIEp1bXAgdG8gbmV4dCBpbmRleC4gKi8KPiCgoKCgoKCg oKCgoKCgoKCgaWYgKCsraW5kZXggPj0gc2ItPm1hcF9ucikKPiCgoKCgoKCgoKCgoKCgoKCgoKCg oKCgoKBpbmRleCA9IDA7Cgo=