Hi,
We're getting the following segfault. We haven't been able to reproduce it with
debug builds or builds from 'apt-get source wget', so here's a trace from the
release build 1.21.2-2ubuntu1 (from Ubuntu 22.04):
dmesg line: wget[3522173]: segfault at 1 ip 00007f17a81a023c sp
00007fff7b14e7f8 error 4 in libc.so.6[7f17a8016000+195000]
#0 __strlen_evex () at ../sysdeps/x86_64/multiarch/strlen-evex.S:77
#1 0x00007f111424cdb1 in __vfprintf_internal (s=s@entry=0x7ffc2e5c50d0,
format=format@entry=0x55e763577735 "%.*f %s", ap=ap@entry=0x7ffc2e5c5250,
mode_flags=mode_flags@entry=2) at ./stdio-common/vfprintf-internal.c:1517
#2 0x00007f111425e51a in __vsnprintf_internal (string=0x55e763591080 "7.95 GB/s",
maxlen=<optimized out>, format=0x55e763577735 "%.*f %s", args=args@entry=0x7ffc2e5c5250,
mode_flags=2) at ./libio/vsnprintf.c:114
#3 0x00007f111430ace5 in ___snprintf_chk (s=<optimized out>, maxlen=<optimized out>,
flag=<optimized out>, slen=<optimized out>, format=<optimized out>) at
./debug/snprintf_chk.c:38
#4 0x000055e76353d69c in ?? ()
#5 0x000055e763538656 in ?? ()
#6 0x000055e763542c8b in ?? ()
#7 0x000055e763545482 in ?? ()
#8 0x000055e763517cee in ?? ()
#9 0x00007f11141ffd90 in __libc_start_call_main
(main=main@entry=0x55e763516260, argc=argc@entry=4,
argv=argv@entry=0x7ffc2e5c5cd8) at ../sysdeps/nptl/libc_start_call_main.h:58
#10 0x00007f11141ffe40 in __libc_start_main_impl (main=0x55e763516260, argc=4,
argv=0x7ffc2e5c5cd8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffc2e5c5cc8) at ../csu/libc-start.c:392
#11 0x000055e7635192d5 in ?? ()
Attached is a patch to fix something that at least looks like it can cause a crash, but
looking at this stack trace, which already shows the formatted string "7.95
GB/s" in the output string, I'm not sure if that is really the fix/cause.
Regards,
Wiebe
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