Package: dmidecode
Version: 2.12-3
Severity: normal

Dear Maintainer,

running dmidecode on the extracted smbios file from a thinkpad T450s causes a
crash.  The way we extracted the smbios works with other laptops. While the
file may be corrupt, dmidecode should not crash in any case. Backtrace is below
(on an amd64 jessie system).

I can probably send the file to you if necessary, but I don't want to put it
into the public bts.

Cheers,
Stefan


$ gdb --args /usr/sbin/dmidecode -d smbios.thinkpad.img
GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1
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Reading symbols from /usr/sbin/dmidecode...Reading symbols from 
/usr/lib/debug/.build-id/8a/3aed0a8c9faebcb07ca6a3cef59133e8d1c812.debug...done.
done.
(gdb) run
Starting program: /usr/sbin/dmidecode -d smbios.thinkpad.img
# dmidecode 2.12
SMBIOS 2.7 present.
66 structures occupying 3201 bytes.
Table at 0xBCBFD000.


Program received signal SIGBUS, Bus error.
0x000055555556200d in memcpy (__len=3201, __src=0x7ffff7ff4000, 
__dest=0x55555577d020) at /usr/include/x86_64-linux-gnu/bits/string3.h:51
warning: Source file is more recent than executable.
51        return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest));
(gdb) bt full
#0  0x000055555556200d in memcpy (__len=3201, __src=0x7ffff7ff4000, 
__dest=0x55555577d020) at /usr/include/x86_64-linux-gnu/bits/string3.h:51
No locals.
#1  mem_chunk (base=3166687232, len=3201, devmem=0x7fffffffe72e 
"smbios.thinkpad.img") at util.c:131
        p = 0x55555577d020
        mmoffset = 0
        mmp = 0x7ffff7ff4000
#2  0x000055555555c49c in dmi_table (base=3166687232, len=3201, num=66, 
ver=519, devmem=0x7fffffffe72e "smbios.thinkpad.img") at dmidecode.c:4356
        buf = <optimized out>
        data = <optimized out>
        i = 0
#3  0x0000555555561682 in smbios_decode (buf=0x55555576d0f0 
"_SM_e\037\002\a\024\001", devmem=0x7fffffffe72e "smbios.thinkpad.img") at 
dmidecode.c:4493
        ver = 519
        devmem = 0x7fffffffe72e "smbios.thinkpad.img"
        buf = 0x55555576d0f0 "_SM_e\037\002\a\024\001"
#4  0x000055555555b3eb in main (argc=<optimized out>, argv=<optimized out>) at 
dmidecode.c:4682
        ret = 0
        found = 0
        fp = 224
        buf = 0x55555576d010 "Phoenix SCT"
(gdb) q

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