Package: gdb Version: 7.12-6 Severity: normal Dear Héctor,
When using the print command to evaluate C code, gdb output
"Couldn't write extended state status: Bad address" and get
in a confused state.
The attached script should allow to reproduce the bug.
Breakpoint 1, doadd (a=2, b=4) at main.c:2
2 int doadd(int a, int b) { return add(a,b);}
(gdb) $1 = 2
(gdb) Couldn't write extended state status: Mauvaise adresse.
(gdb) No symbol "a" in current context.
(gdb) Couldn't write extended state status: Mauvaise adresse.
on jessie I get:
Breakpoint 1, doadd (a=2, b=4) at main.c:2
2 int doadd(int a, int b) { return add(a,b);}
(gdb) $1 = 2
(gdb) $2 = 11
(gdb) $3 = 2
(gdb) $4 = 11
I can reproduce it on a recently installed stretch system
and also in a sid chroot, but not with gdb 8 in experimental.
However there is no problem on a jessie system and also
in a sid chroot.
So maybe it is related to the kernel.
google do not report anything for 'Couldn't write extended state status:'.
The gdb code is
if (ptrace (PTRACE_SETREGSET, tid,
(unsigned int) NT_X86_XSTATE, (long) &iov) < 0)
perror_with_name (_("Couldn't write extended state status"));
I would be very grateful if you could tell me if you can reproduce it.
Thanks for maintaining gdb,
Bill.
-- System Information:
Debian Release: 9.4
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable-debug'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 4.9.0-6-amd64 (SMP w/32 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8),
LANGUAGE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages gdb depends on:
ii libbabeltrace-ctf1 1.5.1-1
ii libbabeltrace1 1.5.1-1
ii libc6 2.24-11+deb9u3
ii libexpat1 2.2.0-2+deb9u1
ii liblzma5 5.2.2-1.2+b1
ii libncurses5 6.0+20161126-1+deb9u2
ii libpython3.5 3.5.3-1
ii libreadline7 7.0-3
ii libtinfo5 6.0+20161126-1+deb9u2
ii zlib1g 1:1.2.8.dfsg-5
Versions of packages gdb recommends:
ii libc6-dbg [libc-dbg] 2.24-11+deb9u3
Versions of packages gdb suggests:
pn gdb-doc <none>
ii gdbserver 7.12-6
-- no debconf information
dotest.sh
Description: Bourne shell script
