On 23:05 Сбт 16 Июн , Andrew Morton wrote: > > someone ort to fix this duplicate: http://bugzilla.kernel.org/show_bug.cgi?id=5079 Already fixed by: commit 4d7bf11d649c72621ca31b8ea12b9c94af380e63 Author: Markus Rechberger <Markus.Rechberger@xxxxxxx> Date: Tue May 8 00:23:39 2007 -0700 I don't have sufficient permission to change bug status, so let's someone else do it. > > > Begin forwarded message: > > Date: Sat, 16 Jun 2007 17:50:35 -0700 (PDT) > From: bugme-daemon@xxxxxxxxxxxxxxxxxxx > To: bugme-new@xxxxxxxxxxxxxx > Subject: [Bugme-new] [Bug 8643] New: Bug with negative timestamps on 64bit machines > > > http://bugzilla.kernel.org/show_bug.cgi?id=8643 > > Summary: Bug with negative timestamps on 64bit machines > Product: File System > Version: 2.5 > KernelVersion: 2.6.21-1.3228.fc7 > Platform: All > OS/Version: Linux > Tree: Fedora > Status: NEW > Severity: normal > Priority: P1 > Component: ext3 > AssignedTo: akpm@xxxxxxxx > ReportedBy: markus.mottl@xxxxxxxxx > > > Most recent kernel where this bug did not occur: > Distribution: Fedora Core 7 > Hardware Environment: AMD Athlon 64 > Software Environment: > Problem Description: > > Negative timestamps (i.e. before 1970) are incorrectly handled due to some > obvious 64bit issues. They show up normally as long as the cache has not been > purged. > > Steps to reproduce: > > Touch a file in an ext3-file system with a negative timestamp, e.g.: > > # touch -t 196901010000 /opt/foo > > Unless you have been writing a lot of data to this partition after the last > command, the next one should display the following: > > # ls -l /opt/foo > -rw-r--r-- 1 root root 0 1969-01-01 00:00 /opt/foo > > This is still correct. But now we purge the file system cache by unmounting > and mounting the partition again: > > # umount /opt/foo > # mount /opt/foo > > Now the timestamp will be corrupted: > > # ls -l /opt/foo > -rw-r--r-- 1 root root 0 2105-02-07 06:28 /opt/foo > > It seems obvious that the upper 32 bits of the 64 bits representing the time > stamp get lost, which explains the above observation. > > On 32bit architectures there is no such problem. I haven't managed to > reproduce this problem with other file systems (e.g. XFS). > > > -- > Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You are on the CC list for the bug, or are watching someone who is. > - > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
