On Tue, Dec 17, 2019 at 9:01 PM Anatoly Pugachev <matorola@xxxxxxxxx> wrote:
>
> Hello!
>
> Getting current git e2fsprogs of dumpe2fs/mke2fs (and probably others)
> segfaults (via make check) with the following backtrace:
JFYI
checkout of commit db41ae2c3e4716ceffe212a742d3c963e400fa1e makes
dumpe2fs to work correctly (i.e. not to segfault).
Tried to bisect (not sure it was fully correct, since i don't used
make clean between bisect steps),
marking head as bad and db41ae2c as good, leads to this commit :
e2fsprogs.git$ git bisect good
e6069a05daeb8d18289ad7772d7800b09b418bca is the first bad commit
commit e6069a05daeb8d18289ad7772d7800b09b418bca
Author: Theodore Ts'o <tytso@xxxxxxx>
Date: Tue Oct 22 18:42:25 2019 -0400
Teach ext2fs_open2() to honor the EXT2_FLAG_SUPER_ONLY flag
Opening the file system with EXT2_FLAG_SUPER_ONLY will leave
fs->group_desc to be NULL and modify "dumpe2fs -h" and tune2fs when it
is emulating e2label to use this flag. This speeds up "dumpe2fs -h"
and "e2label" when operating on very large file systems.
To allow other libext2fs functions to work without too many surprises,
ext2fs_group_desc() will read in the block group descriptors on
demand. This allows "dumpe2fs -h" to be able to read the journal
inode, for example.
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Cray-bug-id: LUS-5777
lib/ext2fs/blknum.c | 39 ++++++++++++++++++++++++++++++++++++---
lib/ext2fs/openfs.c | 4 +++-
misc/dumpe2fs.c | 2 ++
misc/tune2fs.c | 2 +-
4 files changed, 42 insertions(+), 5 deletions(-)
So, if you need BE machine to test on, please use 'gcc compile farm'
BE machines (gcc202 debian sparc64, gcc110 centos-7 ppc64 - and git
master segfaults on gcc110 as well)
