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    SubjectRe: Massive e2fs corruption with 2.2.9/10?
    On Wed, 16 Jun 1999, Chris Adams wrote:

    > Is anyone else seeing this? I've got a box that has been running stable
    > for around 9 months, and now in the span of a few weeks it has eaten
    > itself twice.
    >
    > It starts out with readdir errors, then I get errors about attempting to
    > read past end of device, and then if I try to shutdown and run e2fsck,
    > it never finishes.
    >

    Here too, the following errors with 2.2.9 (vanilla):

    Jun 12 22:44:44 bishop kernel: EXT2-fs error (device ide0(3,1)): ext2_readdir: bad entry in directory #45233: rec_len % 4 != 0 - offset=0, inode=4294967295, rec_len=65535, name_len=255
    Jun 12 22:44:44 bishop kernel: EXT2-fs error (device ide0(3,1)): ext2_readdir: bad entry in directory #51401: rec_len is smaller than minimal - offset=0, inode=59475, rec_len=0, name_len=91
    Jun 12 22:44:44 bishop kernel: EXT2-fs error (device ide0(3,1)): ext2_readdir: bad entry in directory #45233: rec_len % 4 != 0 - offset=0, inode=4294967295, rec_len=65535, name_len=255
    Jun 12 22:44:45 bishop kernel: EXT2-fs error (device ide0(3,1)): ext2_readdir: bad entry in directory #51401: rec_len is smaller than minimal - offset=0, inode=59475, rec_len=0, name_len=91
    Jun 13 00:21:10 bishop kernel: 03:01: rw=0, want=2046818816, limit=2048256
    Jun 13 00:21:10 bishop kernel: attempt to access beyond end of device
    Jun 13 00:21:10 bishop kernel: 03:01: rw=0, want=2046818816, limit=2048256
    Jun 13 00:21:10 bishop kernel: attempt to access beyond end of device
    Jun 13 00:21:10 bishop kernel: 03:01: rw=0, want=2046818816, limit=2048256
    Jun 13 00:21:10 bishop kernel: attempt to access beyond end of device
    Jun 13 00:21:10 bishop kernel: 03:01: rw=0, want=2046818816, limit=2048256
    Jun 13 00:21:23 bishop init: PANIC: segmentation violation! giving up..
    Jun 15 16:24:59 bishop syslogd 1.3-3: restart.

    Im auditing the function ext2_readdir in ext2/dir.c and the rest of ext2
    fs to find if any bug exists, any news I contact you.

    --
    Augusto Cesar Radtke
    Sekure SDI
    http://www.sekure.org



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