On Mon, Jul 08, 2019 at 07:03:38PM +0200, Thorsten Schöning wrote: > Guten Tag Stefan Sperling, > am Montag, 8. Juli 2019 um 18:10 schrieben Sie: > > > SVN only calls the magic_open() function provided by libmagic. > > It checks the return value and skips mime-type detection via > > libmagic if an error occurs. I believe that, at the time, this > > code was tested with and without a magic database file and both > > cases worked. But I don't think we have regression tests for this... > > It might perfectly be that there's something strange with that SVN > client, because even if I make the file magic.mgc available to SVN by > additionally linking in one of the checked places or using the > environment variable "MAGIC", I see a lot of warnings about that file > being invalid: > > > /usr/share/file/misc/magic.mgc, 92: Warning: offset `Ancient_Realms' invalid > > /usr/share/file/misc/magic.mgc, 93: Warning: offset `Armagon's_Lair' invalid > > /usr/share/file/misc/magic.mgc, 94: Warning: offset `Into_The_Flood' invalid > > /usr/share/file/misc/magic.mgc, 95: Warning: offset `Slaughterhouse' invalid > > ' invalide/file/misc/magic.mgc, 96: Warning: offset ` > > ' invalide/file/misc/magic.mgc, 102: Warning: offset `METADATA > > /usr/share/file/misc/magic.mgc, 103: Warning: offset `' invalid > > /usr/share/file/misc/magic.mgc, 106: Warning: offset `' invalid > > ' invalide/file/misc/magic.mgc, 108: Warning: offset `MozFASL > > /usr/share/file/misc/magic.mgc, 109: Warning: offset `' invalid > > /usr/share/file/misc/magic.mgc, 111: Warning: offset `' invalid > > /usr/share/file/misc/magic.mgc, 112: Warning: offset `' invalid > > /usr/share/file/misc/magic.mgc, 125: Warning: offset ` REMARK' invalid > > /usr/share/file/misc/magic.mgc, 126: Warning: offset `' invalid > > ' invalide/file/misc/magic.mgc, 127: Warning: offset `TypeLib > > /usr/share/file/misc/magic.mgc, 128: Warning: offset `' invalid > > /usr/share/file/misc/magic.mgc, 129: Warning: offset `' invalid > > Looks like the linked libmagic is incompatible anyway with the > provided file. > > > If possible please try to reproduce with a newer version. > [...] > > Your best next step is to pin down the exact location of the > > crash with a debugger (either live or with a core file). > > Is SVN crashing or is libmagic crashing? > > I'll keep that in mind, but have very limited time currently for > further research. No idea where to get symbol files from and stuff > like that... > > > (gdb) run add /tmp/svn_crash/test.txt > > Starting program: /volume1/@entware-ng/opt/bin/svn add > > /tmp/svn_crash/test.txt > > warning: Unable to find libthread_db matching inferior's thread library, > > thread debugging will not be available. > > > > Program received signal SIGABRT, Aborted. > > 0x00007ffff3d240f8 in raise () from /opt/lib/libc.so.6 > > (gdb) bt > > #0 0x00007ffff3d240f8 in raise () from /opt/lib/libc.so.6 > > #1 0x00007ffff3d2552a in abort () from /opt/lib/libc.so.6 > > #2 0x00007ffff4711dd5 in ?? () from /opt/lib/libmagic.so.1 > > #3 0x00007ffff4716000 in ?? () from /opt/lib/libmagic.so.1 > > #4 0x00007ffff5c652ed in svn_magic.init () from /opt/lib/libsvn_subr-1.so.0 > > #5 0x00007ffff7b83600 in svn_client_add5 () from > > /opt/lib/libsvn_client-1.so.0 > > #6 0x00000000004077af in ?? () > > #7 0x000000000041c39a in ?? () > > #8 0x00000000004075b3 in ?? () > > #9 0x00007ffff3d11711 in __libc_start_main () from /opt/lib/libc.so.6 > > #10 0x0000000000407629 in ?? ()
Thanks for providing a trace! This trace indicates the code is crashing inside libmagic. There's nothing intelligent SVN could do to prevent this. As a workaround, you can disable use of libmagic in SVN's configuration. In ~/.subversion/config, add these lines: [miscellany] enable-magic-file = no Regards, Stefan