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Mon, 18 Mar 2024 13:42:28 -0700 (PDT) Received: from localhost.localdomain ([2407:7000:8942:5500:aaa1:59ff:fe57:eb97]) by smtp.gmail.com with ESMTPSA id e11-20020a170902784b00b001db579a146csm9927711pln.241.2024.03.18.13.42.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Mar 2024 13:42:27 -0700 (PDT) From: Barry Song <21cnbao@gmail.com> To: syzbot+adbc983a1588b7805de3@syzkaller.appspotmail.com Cc: akpm@linux-foundation.org, chengming.zhou@linux.dev, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, nphamcs@gmail.com, syzkaller-bugs@googlegroups.com, yosryahmed@google.com Subject: Re: [syzbot] [mm?] kernel BUG in sg_init_one Date: Tue, 19 Mar 2024 09:42:12 +1300 Message-Id: <20240318204212.36505-1-21cnbao@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <000000000000bbb3d80613f243a6@google.com> References: <000000000000bbb3d80613f243a6@google.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 6049F1C0002 X-Stat-Signature: 7wyc3wogm5dtpt6f9sh1c1h1j9e94e3s X-Rspam-User: X-HE-Tag: 1710794549-665107 X-HE-Meta: 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 kGBo1uKe 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 VtZhEdoh 9nQTMMuYnh71Ws+6b/7/nfV38vj+OWEv4SL8Z3v3fmD4NneNx3ER9fl2uWngINdRbx2Z7mdOb+ezqTgpc3PAHEVGNtwYTAikn8m8QViOSAeb/4b1Rha5rQEb9HXnFEsfKHPSQUxnpILFghuoEoLw70bSsTZVLsmjIURDcY2/JvA= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > Hello, > > syzbot found the following issue on: > > HEAD commit: e5eb28f6d1af Merge tag 'mm-nonmm-stable-2024-03-14-09-36' .. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=13043abe180000 > kernel config: https://syzkaller.appspot.com/x/.config?x=19bb57c23dffc38e > dashboard link: https://syzkaller.appspot.com/bug?extid=adbc983a1588b7805de3 > compiler: arm-linux-gnueabi-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 > userspace arch: arm > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1706d231180000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13ba7959180000 > > Downloadable assets: > disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/8ead8862021c/non_bootable_disk-e5eb28f6.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/0a7371c63ff2/vmlinux-e5eb28f6.xz > kernel image: https://storage.googleapis.com/syzbot-assets/7539441b4add/zImage-e5eb28f6.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+adbc983a1588b7805de3@syzkaller.appspotmail.com #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git e5eb28f6d1afebed4bb7d740a797d0390bd3a357 diff --git a/mm/zswap.c b/mm/zswap.c index 9dec853647c8..47c0386caba2 100644 --- a/mm/zswap.c +++ b/mm/zswap.c @@ -1086,7 +1086,8 @@ static void zswap_decompress(struct zswap_entry *entry, struct page *page) zpool_unmap_handle(zpool, entry->handle); } - sg_init_one(&input, src, entry->length); + sg_init_table(&input, 1); + sg_set_page(&input, kmap_to_page(src), entry->length, offset_in_page(src)); sg_init_table(&output, 1); sg_set_page(&output, page, PAGE_SIZE, 0); acomp_request_set_params(acomp_ctx->req, &input, &output, entry->length, PAGE_SIZE);