[Bug 204426] Processes terminating cannot access memory

[email protected]
Newsgroups gmane.os.freebsd.devel.threading
Message-ID <[email protected]/bugzilla/>
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=204426

--- Comment #58 from Robert Blayzor <[email protected]> ---
After both patches...



pid 716 (dovecot), uid 0: exited on signal 11 (core dumped)


(gdb) bt full
#0  memcpy () at bcopy.S:65
No locals.
#1  0x0000000800915484 in sig_handler (signo=20, si=0x7fffffffa9a0,
context=0x7fffffffa630)
    at lib-signals.c:132
        h = (struct signal_handler *) 0x8014198e0
        saved_errno = 14
        c = 0 '\0'
        tmp_si = {si_signo = 0, si_errno = 0, si_code = 0, si_pid = 0, si_uid =
0, si_status = 0,
  si_addr = 0x0, si_value = {sival_int = 0, sival_ptr = 0x0, sigval_int = 0,
sigval_ptr = 0x0},
  _reason = {_fault = {_trapno = 0}, _timer = {_timerid = 0, _overrun = 0},
_mesgq = {_mqd = 0},
    _poll = {_band = 0}, __spare__ = {__spare1__ = 0, __spare2__ =
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-STABLE/libexec/rtld-elf/rtld.c:2354
        list = (Objlist *) Cannot access memory at address 0x0
Current language:  auto; currently asm
(gdb) q
dev@mta1 [/var/spool/tmp] sudo procstat -v /var/spool/tmp/dovecot.core
  PID              START                END PRT  RES PRES REF SHD   FL TP PATH
  716           0x400000           0x417000 r-x   20   20   1   0 CN-- vn
  716           0x617000           0x618000 rw-    1    1   1   0 C--- df
  716        0x800617000        0x800635000 r-x   30   30  32   0 CN-- vn
/libexec/ld-elf.so.1
  716        0x800635000        0x800663000 rw-   36   36   1   0 C--- df
  716        0x800834000        0x800836000 rw-    2    2   1   0 C--- df
  716        0x800836000        0x800983000 r-x  225  231  34  17 CN-- vn
/usr/local/lib/dovecot/libdovecot.so.0.0.0
  716        0x800983000        0x800b82000 ---    0    0   1   0 CN-- df
  716        0x800b82000        0x800b89000 rw-    7    0   1   0 C--- vn
/usr/local/lib/dovecot/libdovecot.so.0.0.0
  716        0x800b89000        0x800b8b000 rw-    2    0   1   0 C--- df
  716        0x800b8b000        0x800d03000 r-x  376  387  63  31 CN-- vn
/lib/libc.so.7
  716        0x800d03000        0x800f02000 ---    0    0   1   0 CN-- df
  716        0x800f02000        0x800f0e000 rw-   12    0   1   0 C--- vn
/lib/libc.so.7
  716        0x800f0e000        0x800f38000 rw-   15   15   1   0 C--- df
  716        0x801000000        0x801800000 rw-   94   94   1   0 C--- df
  716     0x7ffffffdf000     0x7ffffffff000 rw-    8    8   1   0 C--D df
  716     0x7ffffffff000     0x800000000000 r-x    1    1  34   0 ---- ph



(gdb) bt full
#0  memcpy () at bcopy.S:65
No locals.
#1  0x0000000800915484 in sig_handler (signo=20, si=0x7fffffffa9a0,
context=0x7fffffffa630)
    at lib-signals.c:132
        h = (struct signal_handler *) 0x8014198e0
        saved_errno = 14
        c = 0 '\0'
        tmp_si = {si_signo = 0, si_errno = 0, si_code = 0, si_pid = 0, si_uid =
0, si_status = 0,
  si_addr = 0x0, si_value = {sival_int = 0, sival_ptr = 0x0, sigval_int = 0,
sigval_ptr = 0x0},
  _reason = {_fault = {_trapno = 0}, _timer = {_timerid = 0, _overrun = 0},
_mesgq = {_mqd = 0},
    _poll = {_band = 0}, __spare__ = {__spare1__ = 0, __spare2__ =
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-STABLE/libexec/rtld-elf/rtld.c:2354
        list = (Objlist *) Cannot access memory at address 0x0
Current language:  auto; currently asm

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