linux-ext4 - Re: e2fsprogs.git dumpe2fs / mke2fs sigserv on sparc64

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Message-ID: <CADxRZqx4MKB4g0uWaraB48YEjUVo_4Nu58Ne7x2C62YMt07DYg@mail.gmail.com>
Date:   Sat, 28 Dec 2019 20:17:06 +0300
From:   Anatoly Pugachev <matorola@...il.com>
To:     "Theodore Y. Ts'o" <tytso@....edu>
Cc:     linux-ext4@...r.kernel.org
Subject: Re: e2fsprogs.git dumpe2fs / mke2fs sigserv on sparc64

On Fri, Dec 27, 2019 at 7:49 AM Theodore Y. Ts'o <tytso@....edu> wrote:
>
> On Wed, Dec 18, 2019 at 03:01:03AM +0300, Anatoly Pugachev wrote:
> > On Tue, Dec 17, 2019 at 9:01 PM Anatoly Pugachev <matorola@...il.com> wrote:
> > >
> > > Getting current git e2fsprogs of dumpe2fs/mke2fs (and probably others)
> > > segfaults (via make check) with the following backtrace...
>
> Hi,
>
> Thanks for reporting this bug.  It should be fixed with this commit:
>
> commit c9a8c53b17ccc4543509d55ff3b343ddbfe805e5

Theodore, thanks.
This patch fixes issue with all e2fsprogs test suite.

PS: there's another one which is failed:
366 tests succeeded     1 tests failed

i_bitmaps: e2image bitmap read/write test: failed

e2fsprogs.git$ git desc
v1.45.4-57-g523219f2

$ cd e2fsprogs.git/tests/i_bitmaps

e2fsprogs.git/tests/i_bitmaps$ ulimit -c unlimited

e2fsprogs.git/tests/i_bitmaps$ ../../misc/e2image /tmp/image  /tmp/image.e2i
e2image 1.46-WIP (09-Oct-2019)
Segmentation fault (core dumped)

e2fsprogs.git/tests/i_bitmaps$ gdb -q ../../misc/e2image
Reading symbols from ../../misc/e2image...
(gdb) set args /tmp/image /tmp/image.e2i
(gdb) run
Starting program: e2fsprogs.git/misc/e2image /tmp/image /tmp/image.e2i
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/sparc64-linux-gnu/libthread_db.so.1".
e2image 1.46-WIP (09-Oct-2019)

Program received signal SIGSEGV, Segmentation fault.
ext2fs_swap_group_desc2 (fs=0x10000148a90, gdp=0x0) at swapfs.c:145
145             gdp->bg_block_bitmap = ext2fs_swab32(gdp->bg_block_bitmap);
(gdb) br
Breakpoint 1 at 0x1000001bb10: file swapfs.c, line 145.
(gdb) p gdp
$1 = (struct ext2_group_desc *) 0x0
(gdb)