Comment 2 for bug 1436694

StacktraceTop:
 __find_specmb (format=0xb77a4f69 "%s: IO error, rotating.") at printf-parse.h:108
 _IO_vfprintf_internal (s=0xbff08500, format=0xb77a4f69 "%s: IO error, rotating.", ap=0xbff08eb8 "X\217\351\270\332!x\267\b}{\267\373\377\377\377\t") at vfprintf.c:1315
 ___vsnprintf_chk (s=0xbff0863c "", maxlen=<optimized out>, flags=1, slen=2048, format=0xb77a4f69 "%s: IO error, rotating.", args=0xbff08eb8 "X\217\351\270\332!x\267\b}{\267\373\377\377\377\t") at vsnprintf_chk.c:63
 vsnprintf () at /usr/include/i386-linux-gnu/bits/stdio2.h:77
 log_internalv (level=4, error=0, file=0xb77a27a4 "../src/journal/journald-server.c", line=479, func=0xb77a52f1 <__func__.14752> "shall_try_append_again", format=0xb77a4f69 "%s: IO error, rotating.", ap=0xbff08eb8 "X\217\351\270\332!x\267\b}{\267\373\377\377\377\t") at ../src/shared/log.c:657