[Bug 204426] Processes terminating cannot access memory

[bugzilla-noreply at freebsd.org]

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

--- Comment #40 from rblayzor at inoc.net ---
Just experienced the same issue on 10.3-BETA1 FreeBSD 10.3-BETA1 #1 r295491M

Failed to write core file for process dovecot (error 14)
pid 716 (dovecot), uid 0: exited on signal 11

ls -l /var/spool/tmp/dovecot.core
-rw-------  1 root  wheel  8925184 Feb 11 19:47 /var/spool/tmp/dovecot.core


#0  service_process_create (service=Cannot access memory at address
0x7fffffffb250
) at service-process.c:311
311     service-process.c: No such file or directory.
        in service-process.c
(gdb) bt full
#0  service_process_create (service=Cannot access memory at address
0x7fffffffb250
) at service-process.c:311
        uid_counter = 7828
        process = (struct service_process *) Cannot access memory at address
0x7fffffffb248
Current language:  auto; currently minimal
(gdb) x/i $rip
0x40dd08 <service_process_create+296>:  mov    %eax,-0x2c(%rbp)
(gdb) info registers
rax            0x4a41   19009
rbx            0x0      0
rcx            0x800c66f0a      34372742922
rdx            0x0      0
rsi            0x40d760 4249440
rdi            0x0      0
rbp            0x7fffffffb260   0x7fffffffb260
rsp            0x7fffffffb220   0x7fffffffb220
r8             0x2      2
r9             0x1      1
r10            0x2710   10000
r11            0x202    514
r12            0x7fffffffb4b8   140737488336056
r13            0x7fffffffb4e0   140737488336096
r14            0x7fffffffb4c0   140737488336064
r15            0x3      3
rip            0x40dd08 0x40dd08 <service_process_create+296>
eflags         0x10202  66050
cs             0x43     67
ss             0x3b     59
ds             0x0      0
es             0x0      0
fs             0x0      0
gs             0x0      0


procstat -v /var/spool/tmp/dovecot.core
  PID              START                END PRT  RES PRES REF SHD   FL TP PATH
  716           0x400000           0x417000 r-x   22   23   1   0 CN-- vn
  716           0x617000           0x618000 rw-    1    1   1   0 CN-- df
  716        0x800617000        0x800635000 r-x   30   30  34   0 CN-- vn
/libexec/ld-elf.so.1
  716        0x800635000        0x800663000 rw-   36   36   1   0 CN-- df
  716        0x800834000        0x800836000 rw-    2    2   1   0 CN-- df
  716        0x800836000        0x800983000 r-x  226  232  38  19 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 CN-- 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  387  66  32 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 CN-- df
  716     0x7ffffffdf000     0x7ffffffff000 rw-    8    0   1   0 C--D df
  716     0x7ffffffff000     0x800000000000 r-x    1    1  36   0 ---- ph

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