Ac na 2.6

[Paweł Sikora]

On Saturday 24 of January 2004 16:32, Pawel Nogas wrote:
> On Saturday 24 of January 2004 13:04, Paweł Sikora wrote:
> > On Saturday 24 of January 2004 09:49, Tomasz Pala wrote:
> > > On Sat, Jan 24, 2004 at 02:18:23 +0100, Jacek Rzęsista wrote:
> > > > > Wątki w miejsce 'symulowanych' wątków. Trzeba mieć glibca i
> > > > > kernela;)
> > > >
> > > > Tylko kernel 2.6 i glibc skompilowany z nptl ? Nie trzeba kompilować
> > > > reszty ?
> > >
> > > U mnie to działało. Inni krzyczą, że jakieś qt segfaultują.
> >
> > analiza qt pod debuggerem wykazala, ze to jednak glibc segfaultowal.
> > jedna osoba zglosila, ze jej dziala, ale jeden dzialajacy system
> > przy ponad dwoch nie dzialajacych to za malo by powiedziec, ze dziala :)
>
> 	Ja przebudowalem od razu glibc+nptl, qt i kde, uzywam tego od 2 miesiecy i
> dotychczas zadnych klopotow.

example @ glibc-2.3.3-snap20040101
spec: http://cvs.pld-linux.org/cgi-bin/cvsweb/SPECS/glibc.spec?rev=1.434
# rpmbuild -bb -v glibc.spec --with nptl --without tls

# strace /usr/bin/uic

(...)
open("/usr/lib/libexpat.so.0", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0@\"\0\000"..., 512) = 
512
fstat64(3, {st_mode=S_IFREG|0755, st_size=148164, ...}) = 0
mmap2(NULL, 151168, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4129a000
mmap2(0x412bc000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x21) 
=
0x412bc000
close(3)                                = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x412bf000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x412c0000
mprotect(0x40def000, 4800512, PROT_READ|PROT_WRITE) = 0
mprotect(0x40def000, 4800512, PROT_READ|PROT_EXEC) = 0
mprotect(0x40841000, 307200, PROT_READ|PROT_WRITE) = 0
mprotect(0x40841000, 307200, PROT_READ|PROT_EXEC) = 0
set_thread_area({entry_number:-1 -> 6, base_addr:0x412bfdc0, limit:1048575,
seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, 
seg_not_present:0,
useable:1}) = 0
munmap(0x40774000, 41134)               = 0
set_tid_address(0x412bfe08)             = 28352
rt_sigaction(SIGRTMIN, {0x40ad6530, [], SA_SIGINFO}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
futex(0x40ad038c, FUTEX_WAKE, 2147483647) = 0
brk(0)                                  = 0x8091000
brk(0n("/usr/lib/libexpat.so.0", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0@\"\0\000"..., 512) = 
512
fstat64(3, {st_mode=S_IFREG|0755, st_size=148164, ...}) = 0
mmap2(NULL, 151168, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4129a000
mmap2(0x412bc000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x21) 
=
0x412bc000
close(3)                                = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x412bf000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x412c0000
mprotect(0x40def000, 4800512, PROT_READ|PROT_WRITE) = 0
mprotect(0x40def000, 4800512, PROT_READ|PROT_EXEC) = 0
mprotect(0x40841000, 307200, PROT_READ|PROT_WRITE) = 0
mprotect(0x40841000, 307200, PROT_READ|PROT_EXEC) = 0
set_thread_area({entry_number:-1 -> 6, base_addr:0x412bfdc0, limit:1048575,
seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, 
seg_not_present:0,
useable:1}) = 0
munmap(0x40774000, 41134)               = 0
set_tid_address(0x412bfe08)             = 28352
rt_sigaction(SIGRTMIN, {0x40ad6530, [], SA_SIGINFO}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
futex(0x40ad038c, FUTEX_WAKE, 2147483647) = 0
brk(0)                                  = 0x8091000
brk(0x80b2000)                          = 0x80b2000
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++x80b2000)                          = 0x80b2000
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++

# gdb /usr/bin/uic & ~/rpm/BUILD/qt..../bin/uic

(gdb) run
Starting program: uic 

Program received signal SIGSEGV, Segmentation fault.
0x00000000 in ?? ()
(gdb) bt
#0  0x00000000 in ?? ()
(gdb)

ani ja, ani djurban, ani tworcy qt nie maja pojecia dlaczego tak sie dzieje.

-- 
The only thing necessary for the triumph of evil
  is for good men to do nothing.
                                           - Edmund Burke