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Date:      Fri, 05 Feb 2016 12:34:59 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-threads@FreeBSD.org
Subject:   [Bug 204426] Processes terminating cannot access memory
Message-ID:  <bug-204426-16-tIDM9xxR1Y@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-204426-16@https.bugs.freebsd.org/bugzilla/>
References:  <bug-204426-16@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D204426

--- Comment #27 from rblayzor@inoc.net ---
Just had one of the VM's sig11 on Dovecot last night... This one is giving =
me
the cannot access memory error ...


This GDB was configured as "amd64-marcel-freebsd"...
Core was generated by `dovecot'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/local/lib/dovecot/libdovecot.so.0...done.
Loaded symbols for /usr/local/lib/dovecot/libdovecot.so.0
Reading symbols from /lib/libc.so.7...Reading symbols from
/usr/lib/debug//lib/libc.so.7.debug...done.
done.
Loaded symbols for /lib/libc.so.7
Reading symbols from /libexec/ld-elf.so.1...Reading symbols from
/usr/lib/debug//libexec/ld-elf.so.1.debug...done.
done.
Loaded symbols for /libexec/ld-elf.so.1
#0  memcpy () at bcopy.S:65
65      bcopy.S: No such file or directory.
        in bcopy.S
(gdb) bt full
#0  memcpy () at bcopy.S:65
No locals.
#1  0x0000000800915484 in sig_handler (signo=3D20, si=3D0x7fffffffa9a0,
context=3D0x7fffffffa630)
    at lib-signals.c:132
        h =3D (struct signal_handler *) 0x8014198e0
        saved_errno =3D 14
        c =3D 0 '\0'
        tmp_si =3D {si_signo =3D 0, si_errno =3D 0, si_code =3D 0, si_pid =
=3D 0, si_uid =3D
0, si_status =3D 0,
  si_addr =3D 0x0, si_value =3D {sival_int =3D 0, sival_ptr =3D 0x0, sigval=
_int =3D 0,
sigval_ptr =3D 0x0},
  _reason =3D {_fault =3D {_trapno =3D 0}, _timer =3D {_timerid =3D 0, _ove=
rrun =3D 0},
_mesgq =3D {_mqd =3D 0},
    _poll =3D {_band =3D 0}, __spare__ =3D {__spare1__ =3D 0, __spare2__ =3D
0x7fffffffa5c8}}}
#2  <signal handler called>
No symbol table info available.
#3  0x0000000000411fc8 in _fini ()
No symbol table info available.
#4  0x000000080061c9a8 in objlist_call_fini ()
    at /.amd_mnt/juno/pub/FreeBSD/10.2-RELEASE/libexec/rtld-elf/rtld.c:2359
        list =3D (Objlist *) Cannot access memory at address 0x0
Current language:  auto; currently asm
(gdb) x/i $rip
0x800cd1a76 <memcpy+22>:        rep movsq %ds:(%rsi),%es:(%rdi)
(gdb) info registers
rax            0x800b893f0      34371834864
rbx            0x7fffffffaef8   140737488334584
rcx            0xa      10
rdx            0x50     80
rsi            0x7fffffffa9a0   140737488333216
rdi            0x800b893f0      34371834864
rbp            0x7fffffffa610   0x7fffffffa610
rsp            0x7fffffffa578   0x7fffffffa578
r8             0xffff800800b8ea50       -140703116498352
r9             0xfffff8000a811000       -8795916791808
r10            0x800636200      34366251520
r11            0x246    582
r12            0x800636200      34366251520
r13            0x800834830      34368342064
r14            0x7fffffffaef8   140737488334584
r15            0x0      0
rip            0x800cd1a76      0x800cd1a76 <memcpy+22>
eflags         0x10206  66054
cs             0x43     67
ss             0x3b     59
ds             0x0      0
es             0x0      0
fs             0x0      0
gs             0x0      0
(gdb)

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