[parisc-linux] squid pb with glibc-2.3.1

[Joel Soete]

Hi all,

I try, without success :( , to do a test case to reproduce the problem I
encountered with squid when glibc was updated to 2.3.1.

Fortunately I steel have a testing system with glibc 2.1 and I can so compare
straces:

squid-2.4.7 && glibc-2.2.5-14.3
...
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\2\1\3\0\0\0\0\0\0\0\0\0\3\0\17\0\0\0\1\0\2\37"..., 1024)
= 1024
fstat64(3, {st_mode=0, st_size=0, ...}) = 0
mmap(NULL, 1392404, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40170000
mprotect(0x402a7000, 118548, PROT_NONE) = 0
mmap(0x402b6000, 45056, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED,
3, 0x136000) = 0x402b6000
mmap(0x402c1000, 12052, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS,
-1, 0) = 0x402c1000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x4001c000
munmap(0x40018000, 13557)               = 0
getpid()                                = 10655
rt_sigaction(SIGRTMIN, {0x400910fe, [], 0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x40091106, [], 0}, NULL, 8) = 0
rt_sigaction(SIGRT_2, {0x4009110e, [], 0}, NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [RTMIN], NULL, 8) = 0
_sysctl(0xfaf00a50, 0, 0, 0xfaf00a78, 0) = 0
umask(07)                               = 022
umask(022)                              = 07
time(NULL)                              = 1047922670
gettimeofday({1047922670, 112579}, NULL) = 0
brk(0)                                  = 0x221000
brk(0x221030)                           = 0x221030
brk(0x222000)                           = 0x222000
brk(0x223000)                           = 0x223000
brk(0x224000)                           = 0x224000
open("/etc/squid.conf", O_RDONLY)       = 3
fstat64(3, {st_mode=0, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40018000
...


squid-2.4.7 && glibc-2.3.1
...
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\2\1\3\0\0\0\0\0\0\0\0\0\3\0\17\0\0\0\1\0\2\f"..., 1024)
= 102
4
fstat64(3, {st_mode=0, st_size=0, ...}) = 0
mmap(NULL, 1412104, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40224000
mprotect(0x40363000, 105480, PROT_NONE) = 0
mmap(0x40372000, 36864, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED,
3
, 0x13e000) = 0x40372000
mmap(0x4037b000, 7176, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP
_ANONYMOUS, -1, 0) = 0x4037b000
close(3)                                = 0
munmap(0x40017000, 13557)               = 0
getpid()                                = 23706
rt_sigaction(SIGRTMIN, {0x400865d6, [], 0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x400865de, [], 0}, NULL, 8) = 0
rt_sigaction(SIGRT_2, {0x400865e6, [], 0}, NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [RTMIN], NULL, 8) = 0
_sysctl(0xfaf00988, 0, 0, 0xfaf009b0, 0) = 0
sched_yield()                           = 0
sched_yield()                           = 0
.
.
.
.

squid loop here

Is the problem is in _systcl() or elsewhere?
How may I analyse further this pb (for my limited understanding, I do not
found enough information on _sysctl() in man)?

Thanks for additional help,
    Joel


PS: the two system are b180L running the same kernel 2.4.20-pa27. The first
one is a testing debian before glibc upgrade, the second one just after the
glibc upgrade.

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