[Bug 204426] Processes terminating cannot access memory

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=204426

--- Comment #43 from Robert Blayzor <rblayzor at inoc.net> ---
#0  t_pop () at data-stack.c:275
275     data-stack.c: No such file or directory.
        in data-stack.c
(gdb) bt full
#0  t_pop () at data-stack.c:275
        frame_block = (struct stack_frame_block *) 0x8014b1378
#1  0x000000080090e584 in io_loop_call_io (io=0x80144e4c0) at ioloop.c:560
        ioloop = (struct ioloop *) 0x801421080
        t_id = 2
#2  0x0000000800911497 in io_loop_handler_run_internal (ioloop=0x801421080) at
ioloop-kqueue.c:151
        ctx = (struct ioloop_handler_context *) 0x801419880
        events = (struct kevent *) 0x8014b9000
        event = (const struct kevent *) 0x8014b9000
        tv = {tv_sec = 43499, tv_usec = 883196}
        ts = {tv_sec = 43499, tv_nsec = 883196000}
        io = (struct io_file *) 0x80144e4c0
        events_count = 67
        ret = 1
        i = 0
#3  0x000000080090eb0e in io_loop_handler_run (ioloop=0x801421080) at
ioloop.c:607
No locals.
#4  0x000000080090e92f in io_loop_run (ioloop=0x801421080) at ioloop.c:583
No locals.
#5  0x000000080086a8bb in master_service_run (service=0x80141b140, callback=0)
    at master-service.c:640
No locals.
#6  0x0000000000406558 in main (argc=3, argv=0x7fffffffb4c0) at main.c:888
        set = (struct master_settings *) 0x801429110
        error = 0x800ca9283 "H\203Ä ]Ã\017\037\200"
        doveconf_arg = 0x0
        orig_info_callback = (failure_callback_t *) 0x8008ee880
<i_syslog_error_handler>
        orig_debug_callback = (failure_callback_t *) 0x8008ee880
<i_syslog_error_handler>
        foreground = false
        ask_key_pass = false
        i = 3
        c = -1
        doubleopts = 0x7fffffffb3a0
Current language:  auto; currently minimal
(gdb) x/i $rip
0x8008eb306 <t_pop+86>: mov    %rax,0x29d523(%rip)        # 0x800b88830
<current_block>
(gdb) info registers
rax            0x801406000      34380734464
rbx            0x0      0
rcx            0x80140f280      34380771968
rdx            0x0      0
rsi            0x7fffffffb198   140737488335256
rdi            0x0      0
rbp            0x7fffffffb280   0x7fffffffb280
rsp            0x7fffffffb260   0x7fffffffb260
r8             0x0      0
r9             0xfffffe007c476718       -2196938201320
r10            0x0      0
r11            0x246    582
r12            0x7fffffffb4b8   140737488336056
r13            0x7fffffffb4e0   140737488336096
r14            0x7fffffffb4c0   140737488336064
r15            0x3      3
rip            0x8008eb306      0x8008eb306 <t_pop+86>
eflags         0x10246  66118
cs             0x43     67
ss             0x3b     59
ds             0x0      0
es             0x0      0
fs             0x0      0
gs             0x0      0



procstat -v dovecot.core
  PID              START                END PRT  RES PRES REF SHD   FL TP PATH
  716           0x400000           0x417000 r-x   19   19   1   0 CN-- vn
  716           0x617000           0x618000 rw-    1    1   1   0 CN-- df
  716        0x800617000        0x800635000 r-x   30   32  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 CN-- df
  716        0x800836000        0x800983000 r-x  213  219  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    2   1   0 CN-- df
  716        0x800b8b000        0x800d03000 r-x  376  390  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 CN-- vn
/lib/libc.so.7
  716        0x800f0e000        0x800f38000 rw-   13   13   1   0 CN-- 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

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