[SVN-4817] svnserve: frequent segfaults in libapr

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Invalid
• Affects Version/s: 1.12.x
• Component/s: svnserve

Environment

OS:
Linux 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1 (2019-04-12) x86_64 GNU/Linux
Distributor ID: Debian
Description: Debian GNU/Linux 9.9 (stretch)
Release: 9.9
Codename: stretch

svnserve, version 1.12.0 (r1857323)
compiled May 17 2019, 12:46:50 on x86_64-unknown-linux-gnu

The following repository back-end (FS) modules are available:

• fs_fs : Module for working with a plain file (FSFS) repository.
• fs_x : Module for working with an experimental (FSX) repository.
• fs_base : Module for working with a Berkeley DB repository.

• Assignee: Unassigned
• Reporter: Alexander Veit
• Created: 20/May/19 08:23
• Updated: 09/Jul/19 14:40
• Resolved: 20/May/19 15:31

Description

We have various Jenkins jobs that nondeterministically fail during Subversion operations. The kernel ring buffer shows svnserve segfaulting when this happens.

The Subversion binary is linked with the libraries provided with Debian Stretch.

libapr1/stable,now 1.5.2-5 amd64 [installed]
libapr1-dev/stable,now 1.5.2-5 amd64 [installed]
libaprutil1/stable,now 1.5.4-3 amd64 [installed]
libaprutil1-dev/stable,now 1.5.4-3 amd64 [installed]

 This error also occurred with a previous Subversion version.

...
2019-05-20T06:50:30,516658+0200 svnserve[27597]: segfault at 8 ip 0000560d6c4d13ea sp 00007fd4d2ef3e50 error 4 in svnserve[560d6c4c3000+15000]
2019-05-20T06:50:30,686601+0200 svnserve[27701]: segfault at 14 ip 00007fa5d93bf822 sp 00007fa59bd19c90 error 4 in libapr-1.so.0.5.2[7fa5d93a3000+32000]
2019-05-20T06:58:56,623191+0200 svnserve[6754]: segfault at 0 ip 00007f45cafc6edd sp 00007f459effccb0 error 4 in libapr-1.so.0.5.2[7f45cafaa000+32000]
2019-05-20T07:05:30,620531+0200 svnserve[15425]: segfault at 0 ip 00007fd59013aedd sp 00007fd57156ccb0 error 4 in libapr-1.so.0.5.2[7fd59011e000+32000]
2019-05-20T07:26:30,485982+0200 svnserve[11182]: segfault at 0 ip 00007f1ddc86aedd sp 00007f1d5fffecb0 error 4 in libapr-1.so.0.5.2[7f1ddc84e000+32000]
2019-05-20T08:29:30,118881+0200 svnserve[31762]: segfault at 14 ip 00007f4f517a2822 sp 00007f4f0dffac90 error 4 in libapr-1.so.0.5.2[7f4f51786000+32000]
2019-05-20T08:29:30,688443+0200 svnserve[32187]: segfault at 14 ip 00007f2795f84822 sp 00007f279233dc90 error 4 in libapr-1.so.0.5.2[7f2795f68000+32000]
2019-05-20T08:47:30,951617+0200 svnserve[27102]: segfault at 3c ip 00007f25a5847d9a sp 00007f2579328de0 error 4 in libapr-1.so.0.5.2[7f25a5825000+32000]
2019-05-20T08:54:30,986006+0200 svnserve[4841]: segfault at 18 ip 00007fc9ee2337a1 sp 00007fc99bffec90 error 4 in libapr-1.so.0.5.2[7fc9ee217000+32000]
2019-05-20T09:10:56,631800+0200 svnserve[27994]: segfault at 0 ip 00007f7431d9fedd sp 00007f7404800cb0 error 4 in libapr-1.so.0.5.2[7f7431d83000+32000]
2019-05-20T09:19:30,828900+0200 svnserve[8397]: segfault at 0 ip 00007f79c3c0aedd sp 00007f798d7f9cb0 error 4 in libapr-1.so.0.5.2[7f79c3bee000+32000]
2019-05-20T09:28:30,379310+0200 svnserve[20890]: segfault at 0 ip 00007f2d9ca29edd sp 00007f2d61d15cb0 error 4 in libapr-1.so.0.5.2[7f2d9ca0d000+32000]
2019-05-20T09:40:30,294511+0200 svnserve[5491]: segfault at 14 ip 00007f5cac6bf822 sp 00007f5c5fffec90 error 4 in libapr-1.so.0.5.2[7f5cac6a3000+32000]
2019-05-20T09:41:29,829458+0200 svnserve[6334]: segfault at 18 ip 00007fba8d1cd7a1 sp 00007fba3a7fbc90 error 4 in libapr-1.so.0.5.2[7fba8d1b1000+32000]
2019-05-20T09:50:29,728226+0200 svnserve[20593]: segfault at 14 ip 00007efe463e7822 sp 00007efe1e04bc90 error 4 in libapr-1.so.0.5.2[7efe463cb000+32000]