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SOLVED: DMESG logs: 'baloo_file_extr[29452]: segfault at'
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Scot-Irish
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PostPosted: Sun Dec 30, 2018 1:40 am    Post subject: SOLVED: DMESG logs: 'baloo_file_extr[29452]: segfault at' Reply with quote

Everytime I enter the KDE desktop, my logs start filling up with variants of the following:

baloo_file_extr[29452]: segfault at 7fb5ac24cc50 ip 00007fb5ab83d61b sp 00007fff3a372d98 error 7 in libc-2.27.so[7fb5ab795000+1[/i]

I know that baloo is part of KDE but this is "all greek to me". Can someone tell me what this means? Even better if someone can tell me what to fix. Doesn't seem to cause any other problems.

Thanks


Last edited by Scot-Irish on Mon Dec 31, 2018 8:58 pm; edited 1 time in total
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bunder
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PostPosted: Sun Dec 30, 2018 2:39 am    Post subject: Reply with quote

Error 7 (from errno) would mean "argument list too big", unfortunately I don't know why it would be doing that.
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PostPosted: Sun Dec 30, 2018 3:05 am    Post subject: Reply with quote

I've had trouble with Baloo sefaulting in the recent past after an upgrade, but can't recall if the error was the same as yours. Anyway, you could try the following commands (as a normal user) to get Baloo to re-index all the files from scratch, to see if it fixes the problem:

Code:
balooctl disable
balooctl enable


For example:

Code:
$ balooctl disable
Disabling the File Indexer
$ balooctl status
Baloo is currently disabled. To enable, please run balooctl enable
$ balooctl enable
Enabling the File Indexer
KCatalog being used without a Q*Application instance. Some translations won't work
$ balooctl status
Baloo File Indexer is running
Indexer state: Indexing file content
Indexed 362 / 1113 files
$ balooctl status
Baloo File Indexer is running
Indexer state: Indexing file content
Indexed 1113 / 1113 files
Current size of index is 6.35 MiB


If that doesn't solve the problem, you could try the steps given in Comment 33 in KDE bug report no. 389848:

https://bugs.kde.org/show_bug.cgi?id=389848#c33

I've used both approaches in the past for some Baloo problems.
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Last edited by Fitzcarraldo on Sun Dec 30, 2018 3:18 am; edited 1 time in total
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Hu
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PostPosted: Sun Dec 30, 2018 3:18 am    Post subject: Reply with quote

bunder wrote:
Error 7 (from errno) would mean "argument list too big", unfortunately I don't know why it would be doing that.
That is not an errno. It is an x86 page fault error code. If I read the kernel source correctly, that is X86_PF_PROT | X86_PF_WRITE | X86_PF_USER. Decoded, that would be: fault is a user (not supervisor) address; fault is a write (not a read); fault found a page, but the page disallowed access (as opposed to accessing a page that does not exist).

I cannot comment on why this program would fault in this way.
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Scot-Irish
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PostPosted: Mon Dec 31, 2018 8:52 pm    Post subject: Reply with quote

Thanks Fitzcarraldo! Your first tip stopped the logging issue. I disabled baloo and it stopped the excessive logging. Since I don't care about the baloo indexing, I don't plan to restart without a reason. I still don't know why this happened, but it really doesn't matter now. Thanks very much indeed from all who offered advice.
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