Crash during tab completion

[Tilman Keskinoz <arved@xxxxxxxx>]

Hi,

I have fairly reproducable crash during tab completion in svn log on NFS mounted volume with zsh 5.2 on Ubuntu 16.10

Any help appreciated

Backtrace:

#0  0x00005555555cedd0 in patmatch (prog=prog@entry=0x5555558ca728) at ../../Src/pattern.c:3195
#1  0x00005555555cf939 in pattryrefs (prog=prog@entry=0x5555558ca6f0, string=<optimized out>, 
    string@entry=0x7ffff7facd68 "log: Show the log messages for a set of revision(s) and/or path(s).\nusage: 1. log [PATH][@REV]\n       2. log URL[@REV] [PATH...]\n\n  1. Print the log messages for the URL corresponding to PATH\n     (de"..., stringlen=<optimized out>, stringlen@entry=3032, unmetalenin=<optimized out>, unmetalenin@entry=0, 
    patstralloc=patstralloc@entry=0x7ffffffe0310, patoffset=patoffset@entry=0, nump=0x0, begp=0x0, endp=0x0)
    at ../../Src/pattern.c:2457
#2  0x00005555555d008f in pattrylen (prog=prog@entry=0x5555558ca6f0, 
    string=string@entry=0x7ffff7facd68 "log: Show the log messages for a set of revision(s) and/or path(s).\nusage: 1. log [PATH][@REV]\n       2. log URL[@REV] [PATH...]\n\n  1. Print the log messages for the URL corresponding to PATH\n     (de"..., len=len@entry=3032, unmetalen=unmetalen@entry=0, patstralloc=patstralloc@entry=0x7ffffffe0310, 
    offset=offset@entry=0) at ../../Src/pattern.c:2195
#3  0x000055555558db60 in igetmatch (sp=sp@entry=0x7ffffffe0540, p=0x5555558ca6f0, fl=16, n=n@entry=1, 
    replstr=<optimized out>, repllistp=repllistp@entry=0x0) at ../../Src/glob.c:2854
#4  0x00005555555930e5 in getmatch (sp=sp@entry=0x7ffffffe0540, pat=<optimized out>, fl=<optimized out>, fl@entry=16, 
    n=n@entry=1, replstr=<optimized out>, replstr@entry=0x0) at ../../Src/glob.c:2637
#5  0x00005555555df333 in paramsubst (ret_flags=<optimized out>, pf_flags=<optimized out>, qt=<optimized out>, 
    str=0x7ffffffe0530, n=<optimized out>, l=<optimized out>) at ../../Src/subst.c:3013
#6  stringsubst (list=list@entry=0x7ffffffe0810, node=<optimized out>, pf_flags=<optimized out>, pf_flags@entry=64, 
    ret_flags=ret_flags@entry=0x7ffffffe09d4, asssub=asssub@entry=0) at ../../Src/subst.c:243
#7  0x00005555555e0fb1 in prefork (list=list@entry=0x7ffffffe0810, flags=flags@entry=64, 
    ret_flags=ret_flags@entry=0x7ffffffe09d4) at ../../Src/subst.c:85
#8  0x00005555555e1a4e in multsub (s=s@entry=0x7ffffffe09f0, pf_flags=pf_flags@entry=64, a=a@entry=0x7ffffffe09f8, 
    isarr=isarr@entry=0x7ffffffe09d0, ms_flags=ms_flags@entry=0x7ffffffe09d4, sep=0x0) at ../../Src/subst.c:527
#9  0x00005555555dc928 in paramsubst (ret_flags=<optimized out>, pf_flags=<optimized out>, qt=<optimized out>, 
    str=0x7ffffffe09e0, n=<optimized out>, l=<optimized out>) at ../../Src/subst.c:2298
#10 stringsubst (list=list@entry=0x7ffffffe0cc0, node=<optimized out>, pf_flags=<optimized out>, pf_flags@entry=64, 
    ret_flags=ret_flags@entry=0x7ffffffe0e84, asssub=asssub@entry=0) at ../../Src/subst.c:243
#11 0x00005555555e0fb1 in prefork (list=list@entry=0x7ffffffe0cc0, flags=flags@entry=64, 
    ret_flags=ret_flags@entry=0x7ffffffe0e84) at ../../Src/subst.c:85
#12 0x00005555555e1a4e in multsub (s=s@entry=0x7ffffffe0ea0, pf_flags=pf_flags@entry=64, a=a@entry=0x7ffffffe0ea8, 
    isarr=isarr@entry=0x7ffffffe0e80, ms_flags=ms_flags@entry=0x7ffffffe0e84, sep=0x0) at ../../Src/subst.c:527
#13 0x00005555555dc928 in paramsubst (ret_flags=<optimized out>, pf_flags=<optimized out>, qt=<optimized out>, 
    str=0x7ffffffe0e90, n=<optimized out>, l=<optimized out>) at ../../Src/subst.c:2298
#14 stringsubst (list=list@entry=0x7ffffffe1170, node=<optimized out>, pf_flags=<optimized out>, pf_flags@entry=64, 
    ret_flags=ret_flags@entry=0x7ffffffe1334, asssub=asssub@entry=0) at ../../Src/subst.c:243
#15 0x00005555555e0fb1 in prefork (list=list@entry=0x7ffffffe1170, flags=flags@entry=64, 
    ret_flags=ret_flags@entry=0x7ffffffe1334) at ../../Src/subst.c:85
#16 0x00005555555e1a4e in multsub (s=s@entry=0x7ffffffe1350, pf_flags=pf_flags@entry=64, a=a@entry=0x7ffffffe1358, 
    isarr=isarr@entry=0x7ffffffe1330, ms_flags=ms_flags@entry=0x7ffffffe1334, sep=0x0) at ../../Src/subst.c:527
#17 0x00005555555dc928 in paramsubst (ret_flags=<optimized out>, pf_flags=<optimized out>, qt=<optimized out>, 
    str=0x7ffffffe1340, n=<optimized out>, l=<optimized out>) at ../../Src/subst.c:2298
#18 stringsubst (list=list@entry=0x7ffffffe1620, node=<optimized out>, pf_flags=<optimized out>, pf_flags@entry=64, 
    ret_flags=ret_flags@entry=0x7ffffffe17e4, asssub=asssub@entry=0) at ../../Src/subst.c:243
#19 0x00005555555e0fb1 in prefork (list=list@entry=0x7ffffffe1620, flags=flags@entry=64, 
    ret_flags=ret_flags@entry=0x7ffffffe17e4) at ../../Src/subst.c:85
#20 0x00005555555e1a4e in multsub (s=s@entry=0x7ffffffe1800, pf_flags=pf_flags@entry=64, a=a@entry=0x7ffffffe1808, 
    isarr=isarr@entry=0x7ffffffe17e0, ms_flags=ms_flags@entry=0x7ffffffe17e4, sep=0x0) at ../../Src/subst.c:527
#21 0x00005555555dc928 in paramsubst (ret_flags=<optimized out>, pf_flags=<optimized out>, qt=<optimized out>, 
    str=0x7ffffffe17f0, n=<optimized out>, l=<optimized out>) at ../../Src/subst.c:2298
#22 stringsubst (list=list@entry=0x7ffff7fc9dc8, node=<optimized out>, pf_flags=<optimized out>, pf_flags@entry=0, 
    ret_flags=ret_flags@entry=0x7ffffffe199c, asssub=asssub@entry=0) at ../../Src/subst.c:243
#23 0x00005555555e0fb1 in prefork (list=list@entry=0x7ffff7fc9dc8, flags=flags@entry=2, ret_flags=0x7ffffffe199c, 
    ret_flags@entry=0x0) at ../../Src/subst.c:85
#24 0x0000555555580aad in addvars (state=state@entry=0x7ffffffe78d0, pc=pc@entry=0x555555918aec,