Bug#965135: git-annex: segfault when uploading to s3

[kpcyrd]

Package: git-annex
Version: 7.20190129-3
Severity: important

git-annex seems to segfault after about ~30min of copying data to an s3
remote. The command I'm using is:

	git annex move --to my-remote -J8 .

I found the following in my logs:

Jul 16 17:22:51 mirror kernel: git-annex:w[11659]: segfault at 100000200 ip 00007fa1359cf4a6 sp 00007fa132da36e0 error 4 in libc-2.28.so[7fa13596d000+148000]
Jul 16 17:22:51 mirror kernel: Code: 84 42 ff ff ff 0f 1f 80 00 00 00 00 4a 8d 0c e0 48 8b 51 40 48 85 d2 0f 84 2a ff ff ff 48 81 fb ff 03 00 00 0f 87 ba 01 00 00 <48> 8b 32 48 89 71 40 42 80 2c 20 01 48 c7 42 08 00 00 00 00 48 83

at one point I could see an error message mentioning a double-free and
something about fasttop (didn't write it down unfortunately), the error
output wasn't visible at the second crash, possibly because it was
overwritten while the program exited.