lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <bug-105121-13602@https.bugzilla.kernel.org/>
Date:	Mon, 28 Sep 2015 12:27:05 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 105121] New: lseek() hangs for a long time on allocated files

https://bugzilla.kernel.org/show_bug.cgi?id=105121

            Bug ID: 105121
           Summary: lseek() hangs for a long time on allocated files
           Product: File System
           Version: 2.5
    Kernel Version: 4.2.1
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: ext4
          Assignee: fs_ext4@...nel-bugs.osdl.org
          Reporter: iam@...dikss.org.ru
        Regression: No

Created attachment 188751
  --> https://bugzilla.kernel.org/attachment.cgi?id=188751&action=edit
lseek test program

lseek() call hangs for a long time on fallocate allocated files on ext4.

Steps to reproduce:
1. gcc -o prog lseek-fallocate.c
2. fallocate -l 1G test
3. cat test > /dev/null
4. ./prog

Actual result:
prog hangs for 2 minutes on my system while doing lseek().

Expected result:
lseek() instantly return ENXIO.

Usually lseek works much faster if file wasn't cat'ed before lseek.
Works properly on btrfs.

-- 
You are receiving this mail because:
You are watching the assignee of the bug.
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists