[Bug 204426] Processes terminating cannot access memory

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Thu Jan 28 23:31:55 UTC 2016


--- Comment #15 from rblayzor at inoc.net ---
After installing a new world and booting to new root NFS. I've seen one crash
(usually takes time). However this one is a bit odd. Kernel message:

Failed to write core file for process exim (error 14)
pid 58267 (exim), uid 26: exited on signal 11

But I do get a core file, but this is all:

GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "amd64-marcel-freebsd"...
Core was generated by `exim'.
Program terminated with signal 11, Segmentation fault.
Cannot access memory at address 0x800978ac0
#0  0x00000008023a2990 in ?? ()
(gdb) bt full
#0  0x00000008023a2990 in ?? ()
No symbol table info available.
Cannot access memory at address 0x7fffffff4f70
(gdb) bt info
No symbol "info" in current context.
(gdb) x/i $rip
0x8023a2990:    Cannot access memory at address 0x8023a2990
(gdb) info registers
rax            0xffffffffffffffd0       -48
rbx            0x2010   8208
rcx            0x800788330      34367636272
rdx            0x0      0
rsi            0x3ff3   16371
rdi            0x8030033c1      34410083265
rbp            0x7fffffff5420   0x7fffffff5420
rsp            0x7fffffff4f70   0x7fffffff4f70
r8             0x7fffffff4670   140737488307824
r9             0x80269f6e0      34400237280
r10            0xfffffffffffff000       -4096
r11            0x8030033c0      34410083264
r12            0x7fffffffed40   140737488350528
r13            0x803229000      34412335104
r14            0x2010   8208
r15            0x3000   12288
rip            0x8023a2990      0x8023a2990
eflags         0x10206  66054
cs             0x43     67
ss             0x3b     59
ds             0x0      0
es             0x0      0
fs             0x0      0
gs             0x0      0

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