tdx-util malloc sanity

[Jeffrey M. Vinocur]

On Sun, 27 Oct 2002, Jeffrey M. Vinocur wrote:

> We had a power failure.  With the usual results.  

Ooo, and I made tdx-util segfault.  Probably the same thing:


[...]

tdx-util: tradindexed: count incorrect for rec.autos.driving: 1023 != 1005
tdx-util: tradindexed: count incorrect for rec.autos.makers.chrysler: 469 != 449
tdx-util: tradindexed: count incorrect for rec.autos.makers.ford.explorer: 334 != 333

Program received signal SIGSEGV, Segmentation fault.
0x400a64bf in memcpy () at memcpy:-1
-1      memcpy: No such file or directory.
        in memcpy

(gdb) bt
#0  0x400a64bf in memcpy () at memcpy:-1
#1  0x37706b6b in ?? ()
#2  0x08051e9e in overview_check (
    data=0xb14aa234 <Address 0xb14aa234 out of bounds>, length=930114410,
    article=8512) at overdata.c:241
#3  0x0804bc8e in entry_audit (data=0x807d5e0, entry=0x401a6018,
    group=0x809d878 "rec.autos.makers.ford.mustang", article=8512, fix=false)
    at tdx-data.c:880
#4  0x0804be6a in tdx_data_audit (
    group=0x809d878 "rec.autos.makers.ford.mustang", index=0x401848c8,
    fix=false) at tdx-data.c:956
#5  0x0804d7b7 in index_audit_group (index=0x807ceb0, entry=0x401848c8,
    hashmap=0x807e5e8, fix=false) at tdx-group.c:1269
#6  0x0804d925 in tdx_index_audit (fix=false) at tdx-group.c:1328
#7  0x0804a762 in main (argc=2, argv=0xbffff654) at tdx-util.c:427
#8  0x40039657 in __libc_start_main (main=0x804a570 <main>, argc=2,
    ubp_av=0xbffff654, init=0x8049508 <_init>, fini=0x8069ee0 <_fini>,
    rtld_fini=0x4000dcd4 <_dl_fini>, stack_end=0xbffff64c)
    at ../sysdeps/generic/libc-start.c:129

(gdb) frame 3
#3  0x0804bc8e in entry_audit (
        data=0x807d5e0, 
        entry=0x401a6018,
        group=0x809d878 "rec.autos.makers.ford.mustang", 
        article=8512, 
        fix=false)
    at tdx-data.c:880

880         if (!overview_check(data->data + entry->offset, entry->length, article)) {

(gdb) print *data
$1 = {
  path = 0x807d618 "/var/spool/news/overview/r/a/m/f/m/rec.autos.makers.ford.mustang", 
  writable = true, 
  high = 0, 
  base = 0, 
  indexfd = 7, 
  datafd = 8,
  index = 0x4019a000,
  data = 0x401a7000 "7274\tRe: throttle body on 5.0\t\"JS\" <notavalidaddress at nospam.com>\tSun, 20 Oct 2002 14:16:39 GMT\t<bVys9.6742$2w2.1976 at nwrddc03.gnilink.net>\t<YBps9.12032$dH4.422581 at wagner.videotron.net>\t1310\t15\tXref: ne"...,
  indexlen = 49212, 
  datalen = 442913, 
  indexinode = 34025, 
  refcount = 0}

(gdb) print *entry
$2 = {offset = 1898983988, 
      length = 930114410, 
      arrived = 1818521953,
      expires = 1953380210, 
      token = {type = 55 '7', class = 64 '@', token = "4ax.com> <r0q9ru"}}


-- 
Jeffrey M. Vinocur
jeff at litech.org