diff options
author | Marti Raudsepp <marti@juffo.org> | 2012-03-09 16:45:36 +0200 |
---|---|---|
committer | Lennart Poettering <lennart@poettering.net> | 2012-03-14 17:55:55 +0100 |
commit | 189f6d82eef8bccb733f735281bed4588dccbbd9 (patch) | |
tree | 7e7f60f4050e574399f664cb2d5f3b3b337ca300 /src/linux/Makefile | |
parent | 8af0fcdb909b87ef4dcef34d50df814656acec81 (diff) |
journal: Don't hold pointers to journal while remapping
Hi!
I was trying out the journal and the journalctl utility sometimes
crashed on me. After some debugging, I tracked it down to the fact
that next_with_matches() holds the "c" object pointer through the
journal_file_next_entry_for_data() call -- which apparently may re-map
the journal file, invalidating the pointer.
The attached patch fixes this crash for me, but being unfamiliar with
the code, I don't know if I'm doing the right thing.
This patch is also available from my github repository:
git://github.com/intgr/systemd.git
https://github.com/intgr/systemd
Regards,
Marti
For the record, here's the original stack trace at the time of remapping:
ret=0x7fff1d5cdec0) at src/journal/journal-file.c:330
ret=0x7fff1d5cdf28) at src/journal/journal-file.c:414
ret=0x7fff1d5ce0a0, offset=0x7fff1d5ce098) at
src/journal/journal-file.c:1101
i=5705, ret=0x7fff1d5ce0a0, offset=0x7fff1d5ce098) at
src/journal/journal-file.c:1147
p=6413608, data_offset=66600, direction=DIRECTION_DOWN,
ret=0x7fff1d5ce0a0, offset=0x7fff1d5ce098) at
src/journal/journal-file.c:1626
direction=DIRECTION_DOWN, ret=0x7fff1d5ce120, offset=0x7fff1d5ce128)
at src/journal/sd-journal.c:533
direction=DIRECTION_DOWN, ret=0x7fff1d5ce170, offset=0x7fff1d5ce178)
at src/journal/sd-journal.c:595
src/journal/sd-journal.c:651
From 9266fc6a58065a7c5dab67430fd78925e519dce9 Mon Sep 17 00:00:00 2001
From: Marti Raudsepp <marti@juffo.org>
Date: Fri, 9 Mar 2012 16:23:00 +0200
Subject: [PATCH] journal: Don't hold pointers to journal while remapping
This would cause a segfault otherwise.
Diffstat (limited to 'src/linux/Makefile')
0 files changed, 0 insertions, 0 deletions