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Sat, 21 Mar 2026 22:52:43 +0000 (GMT) Date: Sat, 21 Mar 2026 23:52:42 +0100 From: Vasily Gorbik To: syzbot Cc: axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [block?] general protection fault in bio_alloc_bioset Message-ID: References: <69bdcdcd.050a0220.3bf4de.002f.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <69bdcdcd.050a0220.3bf4de.002f.GAE@google.com> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: Ps0fHuJhwDrYYKfnPCDHKsKL6H2JFUjy X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzIxMDE5NyBTYWx0ZWRfX2TE2lx9lgvn9 i1YYjpYDN/v1duYm4lqWJJvwvLKnOfWGmp1K2CrEYuk4Jddzlzi/JcAIX5wWteRX1hhg7PfRBYQ sPrOvkvusj21xGPKiSUbmYTppGSfexWdQ3G+KPDjATSStO4CbAt/3e53eTg00ZlXMd+lpvEXst5 RJYYAMw6LVMCVZZ8hafGz5yNZV28vUMEUy7xWHYXDtSrm+AmOCfLkOpTdM+/NCN8UVCnFQDrjef rbUkeDmsSmRqGng3mIPjcmiY3soInaaV/mrDzo38WW/2PVIUogOaC0hKslHJeEPM+ZgAWIPx0gB ZBGb+kCCsbr0dWZKo7uvMGp4+ZEY5sRYZ09vXSNNcWzIEr8DoDv2uBfM0OBwWtV72dFmoT5oMIj GVn3cDJotUcatH+hsR81NYyXpeqKYKtOvrrDguPJjawP71MrXuyKhQFhAK7l6GzMTKBvOI0NXOt cbLBQonhWuqG9t26UQw== X-Proofpoint-GUID: Ps0fHuJhwDrYYKfnPCDHKsKL6H2JFUjy X-Authority-Analysis: v=2.4 cv=OsZCCi/t c=1 sm=1 tr=0 ts=69bf213e cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=BhzMjQlMk7PoH4ACK3AA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-21_07,2026-03-20_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 clxscore=1011 phishscore=0 suspectscore=0 lowpriorityscore=0 priorityscore=1501 bulkscore=0 spamscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603210197 #syz test diff --git a/block/bio.c b/block/bio.c index 5057047194c4..77067fa346d3 100644 --- a/block/bio.c +++ b/block/bio.c @@ -581,11 +581,11 @@ struct bio *bio_alloc_bioset(struct block_device *bdev, unsigned short nr_vecs, */ opf &= ~REQ_ALLOC_CACHE; - p = mempool_alloc(&bs->bio_pool, gfp); + p = mempool_alloc(&bs->bio_pool, saved_gfp); bio = p + bs->front_pad; if (nr_vecs > BIO_INLINE_VECS) { nr_vecs = BIO_MAX_VECS; - bvecs = mempool_alloc(&bs->bvec_pool, gfp); + bvecs = mempool_alloc(&bs->bvec_pool, saved_gfp); } } -- 2.53.0