Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758096Ab3ENTM7 (ORCPT ); Tue, 14 May 2013 15:12:59 -0400 Received: from mout.gmx.net ([212.227.17.20]:64815 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755008Ab3ENTM5 (ORCPT ); Tue, 14 May 2013 15:12:57 -0400 X-Authenticated: #5108953 X-Provags-ID: V01U2FsdGVkX19TrP1sQglTKMOD+XlWvwNpvI6qtqCldZmQGDkOd7 BNS0mQND5QR7fQ Message-ID: <51928CB5.2050406@gmx.de> Date: Tue, 14 May 2013 21:12:53 +0200 From: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130405 Thunderbird/17.0.5 MIME-Version: 1.0 To: linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org CC: Linux Kernel Subject: v3.10: unmount won't work X-Enigmail-Version: 1.6a1pre Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Y-GMX-Trusted: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7892 Lines: 140 At a stable 32 bit stable Gentoo with kernel v3.10-rc1-113-ga2c7a54 I cannot umount an (EXT4) fs which was created in a file located in a tmpfs partition and loop mounted : That file system was used to hold victims files shared via NFSv4 to an user mode linux on which trinity was used to fuzz testing a patched UML guest kernel. n22 ~ # mount ... nfsd on /proc/fs/nfsd type nfsd (rw,nodev,noexec,nosuid) /mnt/ramdisk/disk0 on /mnt/trinity type ext4 (rw) n22 ~ # umount /mnt/trinity umount: /mnt/trinity: not mounted n22 ~ # lsof | grep loop loop0 7028 root cwd DIR 8,19 4096 2 / loop0 7028 root rtd DIR 8,19 4096 2 / loop0 7028 root txt unknown /proc/7028/exe n22 ~ # ps axf | grep 7028 | grep -v grep 7028 ? S< 0:00 \_ [loop0] n22 ~ # kill -9 7028 n22 ~ # ps axf | grep 7028 | grep -v grep 7028 ? S< 0:00 \_ [loop0] n22 ~ # umount /mnt/trinity umount: /mnt/trinity: not mounted n22 ~ # strace umount /mnt/trinity execve("/bin/umount", ["umount", "/mnt/trinity"], [/* 40 vars */]) = 0 brk(0) = 0x8b1a000 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb777d000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=148191, ...}) = 0 mmap2(NULL, 148191, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7758000 close(3) = 0 open("/lib/libmount.so.1", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0p~\0\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=236364, ...}) = 0 mmap2(NULL, 243340, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb771c000 mprotect(0xb7754000, 4096, PROT_NONE) = 0 mmap2(0xb7755000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x38) = 0xb7755000 mmap2(0xb7757000, 1676, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7757000 close(3) = 0 open("/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\240\212\231F4\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=1715512, ...}) = 0 mmap2(0x4697c000, 1727228, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x4697c000 mprotect(0x46b1b000, 4096, PROT_NONE) = 0 mmap2(0x46b1c000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19f) = 0x46b1c000 mmap2(0x46b1f000, 11004, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x46b1f000 close(3) = 0 open("/lib/libblkid.so.1", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\0W\0\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=219808, ...}) = 0 mmap2(NULL, 226800, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb76e4000 mmap2(0xb7718000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x33) = 0xb7718000 mmap2(0xb771b000, 1520, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb771b000 close(3) = 0 open("/lib/libuuid.so.1", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\340\20\0\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=17892, ...}) = 0 mmap2(NULL, 20672, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb76de000 mmap2(0xb76e2000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3) = 0xb76e2000 close(3) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb76dd000 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb76dc000 set_thread_area({entry_number:-1 -> 6, base_addr:0xb76dc740, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0 mprotect(0x46b1c000, 8192, PROT_READ) = 0 mprotect(0xb76e2000, 4096, PROT_READ) = 0 mprotect(0xb7718000, 8192, PROT_READ) = 0 mprotect(0xb7755000, 4096, PROT_READ) = 0 mprotect(0x804d000, 4096, PROT_READ) = 0 mprotect(0x46954000, 4096, PROT_READ) = 0 munmap(0xb7758000, 148191) = 0 brk(0) = 0x8b1a000 brk(0x8b3b000) = 0x8b3b000 open("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=4072928, ...}) = 0 mmap2(NULL, 2097152, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb74dc000 mmap2(NULL, 8192, PROT_READ, MAP_PRIVATE, 3, 0x1ff) = 0xb777b000 close(3) = 0 getuid32() = 0 geteuid32() = 0 getuid32() = 0 geteuid32() = 0 getgid32() = 0 getegid32() = 0 prctl(PR_GET_DUMPABLE) = 1 lstat64("/etc/mtab", {st_mode=S_IFREG|0644, st_size=1604, ...}) = 0 open("/etc/mtab", O_RDWR|O_CREAT|O_LARGEFILE, 0644) = 3 close(3) = 0 lstat64("/etc/mtab", {st_mode=S_IFREG|0644, st_size=1604, ...}) = 0 open("/etc/mtab", O_RDONLY|O_LARGEFILE) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=1604, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb777a000 read(3, "rootfs / rootfs rw 0 0\n/dev/root"..., 4096) = 1604 read(3, "", 4096) = 0 close(3) = 0 munmap(0xb777a000, 4096) = 0 stat64("/sbin/umount.ext4", 0xbf8263cc) = -1 ENOENT (No such file or directory) stat64("/sbin/fs.d/umount.ext4", 0xbf8263cc) = -1 ENOENT (No such file or directory) stat64("/sbin/fs/umount.ext4", 0xbf8263cc) = -1 ENOENT (No such file or directory) stat64("/usr/sbin/umount.ext4", 0xbf8263cc) = -1 ENOENT (No such file or directory) stat64("/bin/umount.ext4", 0xbf8263cc) = -1 ENOENT (No such file or directory) stat64("/usr/bin/umount.ext4", 0xbf8263cc) = -1 ENOENT (No such file or directory) oldumount("/mnt/trinity") = -1 EINVAL (Invalid argument) open("/usr/share/locale/locale.alias", O_RDONLY|O_CLOEXEC) = 3 fcntl64(3, F_GETFD) = 0x1 (flags FD_CLOEXEC) fstat64(3, {st_mode=S_IFREG|0644, st_size=2570, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb777a000 read(3, "# Locale name alias data base.\n#"..., 4096) = 2570 read(3, "", 4096) = 0 close(3) = 0 munmap(0xb777a000, 4096) = 0 open("/usr/share/locale/en_US.utf8/LC_MESSAGES/util-linux.mo", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/share/locale/en_US/LC_MESSAGES/util-linux.mo", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/share/locale/en.utf8/LC_MESSAGES/util-linux.mo", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/share/locale/en/LC_MESSAGES/util-linux.mo", O_RDONLY) = -1 ENOENT (No such file or directory) write(2, "umount: ", 8umount: ) = 8 write(2, "/mnt/trinity: not mounted", 25/mnt/trinity: not mounted) = 25 write(2, "\n", 1 ) = 1 close(1) = 0 close(2) = 0 exit_group(32) = ? +++ exited with 32 +++ -- MfG/Sincerely Toralf Förster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to 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