Date: Mon, 5 Dec 2005 09:41:43 GMT From: "H. Matsuo" <hiroshi50000@yahoo.co.jp> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/89966: mounting ntfs causes kernel panic in some cases Message-ID: <200512050941.jB59fhsi050604@www.freebsd.org> Resent-Message-ID: <200512050950.jB59o1e3012297@freefall.freebsd.org>
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>Number: 89966 >Category: kern >Synopsis: mounting ntfs causes kernel panic in some cases >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Dec 05 09:50:01 GMT 2005 >Closed-Date: >Last-Modified: >Originator: H. Matsuo >Release: 6.0-STABLE >Organization: >Environment: FreeBSD racco.zoo 6.0-STABLE FreeBSD 6.0-STABLE #1: Sun Dec 4 18:51:43 JST 2005 root@racco.zoo:/mnt/misc/freebsd-6/obj/mnt/misc/freebsd-6/src/sys/GENERIC\ i386 i386 Mobile Intel(R) Pentium(R) 4 - M CPU 2.00GHz FreeBSD >Description: When tring to re-mount *mounted* filesystem again, kernel does not return ERROR, or panic in some cases (with option -o ro). Please see below. In case 1-3 kernel reacts properly, but in case 4-5 response of kernel seems to be odd. In case 6, kernel panic happens. ----------------------------------- [CASE1] # mount -t ufs /dev/da0s4d /mnt/misc # mount -t ufs /dev/da0s4d /mnt/misc mount: /dev/da0s4d: Operation not permitted (kernel returns ERROR: this is an expected response, no problem.) [CASE2] # mount -t msdosfs /dev/da0s3 /mnt/win3 # mount -t msdosfs /dev/da0s3 /mnt/win3 mount_msdosfs: /dev/da0s3: Operation not permitted (kernel returns ERROR: this is an expected response, no problem.) [CASE3] # mount -t ntfs /dev/ad0s1 /mnt/win1 # mount -t ntfs /dev/ad0s1 /mnt/win1 mount_ntfs: /dev/ad0s1: Operation not permitted (kernel returns ERROR: this is an expected response, no problem.) [CASE4] # mount -t ufs -o ro /dev/da0s4d /mnt/misc # mount -t ufs -o ro /dev/da0s4d /mnt/misc (kernel does not return ERROR, why?) # df Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/ad0s3a 118766 79268 29998 73% / devfs 1 1 0 100% /dev /dev/ad0s3d 2675918 1498266 963580 61% /usr /dev/ad0s3e 168366 36918 117980 24% /var /dev/ad0s3f 287888 141996 122862 54% /home procfs 4 4 0 100% /proc /dev/da0s4d 9915754 4663748 4458746 51% /mnt/misc /dev/da0s4d 9915754 4663748 4458746 51% /mnt/misc (/mnt/misc line appears twice. Is this no problem?) [CASE5] # mount -t msdosfs -o ro /dev/da0s3 /mnt/win3 # mount -t msdosfs -o ro /dev/da0s3 /mnt/win3 # df Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/ad0s3a 118766 79268 29998 73% / devfs 1 1 0 100% /dev /dev/ad0s3d 2675918 1498266 963580 61% /usr /dev/ad0s3e 168366 36916 117982 24% /var /dev/ad0s3f 287888 141996 122862 54% /home procfs 4 4 0 100% /proc /dev/da0s3 5114732 1087768 4026964 21% /mnt/win3 /dev/da0s3 5114732 1087768 4026964 21% /mnt/win3 (same as CASE4) [CASE6] # mount -t ntfs -o ro /dev/ad0s1 /mnt/win1 # mount -t ntfs -o ro /dev/ad0s1 /mnt/win1 <<kernel panic!!>> >How-To-Repeat: # mount -t ntfs -o ro /dev/ad0s1 /mnt/win1 # mount -t ntfs -o ro /dev/ad0s1 /mnt/win1 <<kernel panic!!>> >Fix: I don't know. >Release-Note: >Audit-Trail: >Unformatted:
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