From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============2388239796436076433==" MIME-Version: 1.0 From: Rong Chen To: lkp@lists.01.org Subject: Re: [vfs] fd0002870b: BUG:KASAN:null-ptr-deref_in_n Date: Wed, 12 Sep 2018 08:34:52 +0800 Message-ID: <0bac086d-13a5-7275-fd08-7e9bfc58f562@intel.com> In-Reply-To: <10338.1536697773@warthog.procyon.org.uk> List-Id: --===============2388239796436076433== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On 09/12/2018 04:29 AM, David Howells wrote: > kernel test robot wrote: > >> [ 18.568403] nfs_fs_mount+0x901/0x1220 > I don't suppose you can tell me what file and line number this correspond= s to? $ faddr2line vmlinux nfs_fs_mount+0x901 nfs_fs_mount+0x901/0x1218: nfs_parse_devname at fs/nfs/super.c:1911 =C2=A0(inlined by) nfs_validate_text_mount_data at fs/nfs/super.c:2187 =C2=A0(inlined by) nfs_fs_mount at fs/nfs/super.c:2684 > > Also, can you tell me what the mount parameters were? I'm not sure how to > extract them from the information provided. qemu command (you could get from 'bin/lkp qemu -k job-script'): qemu-system-x86_64 -enable-kvm -fsdev = local,id=3Dtest_dev,path=3D/home/nfs/.lkp//result/boot/1/vm-kbuild-1G/debia= n-x86_64-2018-04-03.cgz/x86_64-randconfig-r0-09070102/gcc-6/fd0002870b453c5= 8d0d8c195954f5049bc6675fb/0,security_model=3Dnone = -device virtio-9p-pci,fsdev=3Dtest_dev,mount_tag=3D9p/virtfs_mount -kernel = vmlinuz-4.19.0-rc1-00104-gfd00028 -append root=3D/dev/ram0 user=3Dlkp = job=3D/lkp/jobs/scheduled/vm-kbuild-1G-11/boot-1-debian-x86_64-2018-04-03.c= gz-fd0002870b453c58d0d8c195954f5049bc6675fb-20180910-6016-1hqt4et-1.yaml = ARCH=3Dx86_64 kconfig=3Dx86_64-randconfig-r0-09070102 = branch=3Dlinux-devel/devel-hourly-2018090623 = commit=3Dfd0002870b453c58d0d8c195954f5049bc6675fb = BOOT_IMAGE=3D/pkg/linux/x86_64-randconfig-r0-09070102/gcc-6/fd0002870b453c5= 8d0d8c195954f5049bc6675fb/vmlinuz-4.19.0-rc1-00104-gfd00028 = max_uptime=3D600 = RESULT_ROOT=3D/result/boot/1/vm-kbuild-1G/debian-x86_64-2018-04-03.cgz/x86_= 64-randconfig-r0-09070102/gcc-6/fd0002870b453c58d0d8c195954f5049bc6675fb/3 = LKP_LOCAL_RUN=3D1 debug apic=3Ddebug sysrq_always_enabled = rcupdate.rcu_cpu_stall_timeout=3D100 net.ifnames=3D0 printk.devkmsg=3Don = panic=3D-1 softlockup_panic=3D1 nmi_watchdog=3Dpanic oops=3Dpanic load_ramd= isk=3D2 = prompt_ramdisk=3D0 drbd.minor_count=3D8 systemd.log_level=3Derr = ignore_loglevel console=3Dtty0 earlyprintk=3DttyS0,115200 = console=3DttyS0,115200 vga=3Dnormal rw=C2=A0 ip=3Ddhcp = result_service=3D9p/virtfs_mount -initrd /home/nfs/.lkp/cache/final_initrd = -smp 2 -m 1024M -no-reboot -watchdog i6300esb -rtc base=3Dlocaltime = -device e1000,netdev=3Dnet0 -netdev user,id=3Dnet0 -display none -monitor = null -serial stdio -device virtio-scsi-pci,id=3Dscsi0 -drive = file=3D/tmp/vdisk-nfs/disk-vm-kbuild-1G-11-0,if=3Dnone,id=3Dhd0,media=3Ddis= k,aio=3Dnative,cache=3Dnone = -device scsi-hd,bus=3Dscsi0.0,drive=3Dhd0,scsi-id=3D1,lun=3D0 -drive = file=3D/tmp/vdisk-nfs/disk-vm-kbuild-1G-11-1,if=3Dnone,id=3Dhd1,media=3Ddis= k,aio=3Dnative,cache=3Dnone = -device scsi-hd,bus=3Dscsi0.0,drive=3Dhd1,scsi-id=3D1,lun=3D1 -drive = file=3D/tmp/vdisk-nfs/disk-vm-kbuild-1G-11-2,if=3Dnone,id=3Dhd2,media=3Ddis= k,aio=3Dnative,cache=3Dnone = -device scsi-hd,bus=3Dscsi0.0,drive=3Dhd2,scsi-id=3D1,lun=3D2 -drive = file=3D/tmp/vdisk-nfs/disk-vm-kbuild-1G-11-3,if=3Dnone,id=3Dhd3,media=3Ddis= k,aio=3Dnative,cache=3Dnone = -device scsi-hd,bus=3Dscsi0.0,drive=3Dhd3,scsi-id=3D1,lun=3D3 -drive = file=3D/tmp/vdisk-nfs/disk-vm-kbuild-1G-11-4,if=3Dnone,id=3Dhd4,media=3Ddis= k,aio=3Dnative,cache=3Dnone = -device scsi-hd,bus=3Dscsi0.0,drive=3Dhd4,scsi-id=3D1,lun=3D4 Best Regards, Rong Chen > > Thanks, > David > _______________________________________________ > LKP mailing list > LKP(a)lists.01.org > https://lists.01.org/mailman/listinfo/lkp --===============2388239796436076433==-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 223DEC04ABB for ; 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d="scan'208";a="87955942" Received: from shao2-debian.sh.intel.com (HELO [10.239.13.4]) ([10.239.13.4]) by fmsmga004.fm.intel.com with ESMTP; 11 Sep 2018 17:34:28 -0700 Subject: Re: [LKP] [vfs] fd0002870b: BUG:KASAN:null-ptr-deref_in_n To: David Howells Cc: Stephen Rothwell , lkp@01.org, LKML References: <20180911004752.GG1110@shao2-debian> <10338.1536697773@warthog.procyon.org.uk> From: Rong Chen Message-ID: <0bac086d-13a5-7275-fd08-7e9bfc58f562@intel.com> Date: Wed, 12 Sep 2018 08:34:52 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <10338.1536697773@warthog.procyon.org.uk> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/12/2018 04:29 AM, David Howells wrote: > kernel test robot wrote: > >> [ 18.568403] nfs_fs_mount+0x901/0x1220 > I don't suppose you can tell me what file and line number this corresponds to? $ faddr2line vmlinux nfs_fs_mount+0x901 nfs_fs_mount+0x901/0x1218: nfs_parse_devname at fs/nfs/super.c:1911  (inlined by) nfs_validate_text_mount_data at fs/nfs/super.c:2187  (inlined by) nfs_fs_mount at fs/nfs/super.c:2684 > > Also, can you tell me what the mount parameters were? I'm not sure how to > extract them from the information provided. qemu command (you could get from 'bin/lkp qemu -k job-script'): qemu-system-x86_64 -enable-kvm -fsdev local,id=test_dev,path=/home/nfs/.lkp//result/boot/1/vm-kbuild-1G/debian-x86_64-2018-04-03.cgz/x86_64-randconfig-r0-09070102/gcc-6/fd0002870b453c58d0d8c195954f5049bc6675fb/0,security_model=none -device virtio-9p-pci,fsdev=test_dev,mount_tag=9p/virtfs_mount -kernel vmlinuz-4.19.0-rc1-00104-gfd00028 -append root=/dev/ram0 user=lkp job=/lkp/jobs/scheduled/vm-kbuild-1G-11/boot-1-debian-x86_64-2018-04-03.cgz-fd0002870b453c58d0d8c195954f5049bc6675fb-20180910-6016-1hqt4et-1.yaml ARCH=x86_64 kconfig=x86_64-randconfig-r0-09070102 branch=linux-devel/devel-hourly-2018090623 commit=fd0002870b453c58d0d8c195954f5049bc6675fb BOOT_IMAGE=/pkg/linux/x86_64-randconfig-r0-09070102/gcc-6/fd0002870b453c58d0d8c195954f5049bc6675fb/vmlinuz-4.19.0-rc1-00104-gfd00028 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-kbuild-1G/debian-x86_64-2018-04-03.cgz/x86_64-randconfig-r0-09070102/gcc-6/fd0002870b453c58d0d8c195954f5049bc6675fb/3 LKP_LOCAL_RUN=1 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 net.ifnames=0 printk.devkmsg=on panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 drbd.minor_count=8 systemd.log_level=err ignore_loglevel console=tty0 earlyprintk=ttyS0,115200 console=ttyS0,115200 vga=normal rw  ip=dhcp result_service=9p/virtfs_mount -initrd /home/nfs/.lkp/cache/final_initrd -smp 2 -m 1024M -no-reboot -watchdog i6300esb -rtc base=localtime -device e1000,netdev=net0 -netdev user,id=net0 -display none -monitor null -serial stdio -device virtio-scsi-pci,id=scsi0 -drive file=/tmp/vdisk-nfs/disk-vm-kbuild-1G-11-0,if=none,id=hd0,media=disk,aio=native,cache=none -device scsi-hd,bus=scsi0.0,drive=hd0,scsi-id=1,lun=0 -drive file=/tmp/vdisk-nfs/disk-vm-kbuild-1G-11-1,if=none,id=hd1,media=disk,aio=native,cache=none -device scsi-hd,bus=scsi0.0,drive=hd1,scsi-id=1,lun=1 -drive file=/tmp/vdisk-nfs/disk-vm-kbuild-1G-11-2,if=none,id=hd2,media=disk,aio=native,cache=none -device scsi-hd,bus=scsi0.0,drive=hd2,scsi-id=1,lun=2 -drive file=/tmp/vdisk-nfs/disk-vm-kbuild-1G-11-3,if=none,id=hd3,media=disk,aio=native,cache=none -device scsi-hd,bus=scsi0.0,drive=hd3,scsi-id=1,lun=3 -drive file=/tmp/vdisk-nfs/disk-vm-kbuild-1G-11-4,if=none,id=hd4,media=disk,aio=native,cache=none -device scsi-hd,bus=scsi0.0,drive=hd4,scsi-id=1,lun=4 Best Regards, Rong Chen > > Thanks, > David > _______________________________________________ > LKP mailing list > LKP@lists.01.org > https://lists.01.org/mailman/listinfo/lkp