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Wed, 12 Jun 2024 07:46:39 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id d5BAE19SaWYIUAAAD6G6ig (envelope-from ); Wed, 12 Jun 2024 07:46:39 +0000 Date: Wed, 12 Jun 2024 09:46:37 +0200 From: Oscar Salvador To: syzbot Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, muchun.song@linux.dev, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [mm?] general protection fault in dequeue_hugetlb_folio_nodemask (2) Message-ID: References: <0000000000004f12bb061a9acf07@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=us-ascii Content-Disposition: inline In-Reply-To: <0000000000004f12bb061a9acf07@google.com> X-Spam-Score: -1.80 X-Spam-Level: X-Spam-Flag: NO X-Spamd-Result: default: False [-1.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; SUSPICIOUS_RECIPS(1.50)[]; URI_HIDDEN_PATH(1.00)[https://syzkaller.appspot.com/x/.config?x=d8bf5cd6bcca7343]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; TO_DN_SOME(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo]; RCVD_TLS_ALL(0.00)[]; MISSING_XM_UA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_FIVE(0.00)[6]; RCVD_COUNT_TWO(0.00)[2]; REDIRECTOR_URL(0.00)[goo.gl]; TAGGED_RCPT(0.00)[569ed13f4054f271087b]; RCVD_VIA_SMTP_AUTH(0.00)[]; SUBJECT_HAS_QUESTION(0.00)[] On Tue, Jun 11, 2024 at 03:34:25AM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: d35b2284e966 Add linux-next specific files for 20240607 > git tree: linux-next > console+strace: https://syzkaller.appspot.com/x/log.txt?x=161352e2980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=d8bf5cd6bcca7343 > dashboard link: https://syzkaller.appspot.com/bug?extid=569ed13f4054f271087b > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15eb5e86980000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15db597e980000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/e0055a00a2cb/disk-d35b2284.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/192cbb8cf833/vmlinux-d35b2284.xz > kernel image: https://storage.googleapis.com/syzbot-assets/57804c9c9319/bzImage-d35b2284.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+569ed13f4054f271087b@syzkaller.appspotmail.com > > Oops: general protection fault, probably for non-canonical address 0xdffffc0000000489: 0000 [#1] PREEMPT SMP KASAN PTI > KASAN: probably user-memory-access in range [0x0000000000002448-0x000000000000244f] > CPU: 1 PID: 5095 Comm: syz-executor603 Not tainted 6.10.0-rc2-next-20240607-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 > RIP: 0010:zonelist_zone_idx include/linux/mmzone.h:1613 [inline] > RIP: 0010:next_zones_zonelist include/linux/mmzone.h:1644 [inline] > RIP: 0010:first_zones_zonelist include/linux/mmzone.h:1670 [inline] > RIP: 0010:dequeue_hugetlb_folio_nodemask+0x193/0xe40 mm/hugetlb.c:1362 > Code: 93 7a a0 ff c7 44 24 14 00 00 00 00 83 7c 24 40 00 0f 85 97 0c 00 00 48 83 7c 24 20 00 0f 85 45 09 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 58 09 00 00 44 8b 33 44 89 f7 8b 5c 24 ... > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > If the report is already addressed, let syzbot know by replying with: > #syz fix: exact-commit-title > > If you want syzbot to run the reproducer, reply with: > #syz test: git://repo/address.git branch-or-commit-hash > If you attach or paste a git patch, syzbot will apply it before testing. #syz test: https://github.com/leberus/linux hugetlb-dequeue-numa -- Oscar Salvador SUSE Labs