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[Bug 906684] kernel BUG at ../fs/btrfs/extent_io.c:2875!
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Thu, 05 Jan 2017 13:48:27 +0000
  • Message-id: <bug-906684-21960-AN4CpSPkMv@http.bugzilla.opensuse.org/>
http://bugzilla.opensuse.org/show_bug.cgi?id=906684
http://bugzilla.opensuse.org/show_bug.cgi?id=906684#c7

Libor Pechacek <lpechacek@xxxxxxxx> changed:

What |Removed |Added
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CC| |f.st@xxxxxxxx,
| |fdmanana@xxxxxxxx,
| |lpechacek@xxxxxxxx
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--- Comment #7 from Libor Pechacek <lpechacek@xxxxxxxx> ---
For the record, the kernel bug message corresponds to the below code in
fs/btrfs/extent_io.c, __do_readpage().

2868 if (IS_ERR_OR_NULL(em)) {
2869 SetPageError(page);
2870 if (!parent_locked)
2871 unlock_extent(tree, cur, end);
2872 break;
2873 }
2874 extent_offset = cur - em->start;
=>2875 BUG_ON(extent_map_end(em) <= cur);
2876 BUG_ON(end < cur);

I can also see that there are subtle changes in this function between openSUSE
13.2 and current upstream. Frank, Nicholas, Roman, Christoph, Stephan does the
bug still trigger with newer openSUSE releases?

(In reply to Stefan Ziegler from comment #6)
Long live ext4 and reiserfs. They never caused problems.

:) Reiser really wasn't my FS of choice in 2002. How time flies!

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