tags 561203 - pending thanks Hello,
On pirmadienis 04 Sausis 2010 17:18:40 Helge Deller wrote:
> libc6-2.10.2-3 made it much, *much* better (I'm not sure yet why!!).
> But I can still reproduce the bug on my system with your testcases. It's
> just much harder to reproduce it, but it still happens. So, it's not fixed
> yet, it just happens much less often.
Indeed, you are right. I was able to run `./minifail qt` 90k times without a
hang, but it hang at the 3000+th run next time. Anyway, probability of hitting
this bug has become much much lower now so maybe KDE will finally build on
hppa now. Even if build fails with a timeout like previously, it should be
enough to give back it once again.
Btw, backtrace of the hang is different now:
(gdb) t 2
[Switching to thread 2 (Thread 0x41d26480 (LWP 4088))]#0 0x0000046c in ?? ()
(gdb) bt
#0 0x0000046c in ?? ()
#1 0x40a06380 in ?? () from /lib/libc.so.6
#2 0x40a06380 in ?? () from /lib/libc.so.6
#3 0x40a060b4 in malloc () from /lib/libc.so.6
#4 0x4093b2b4 in operator new(unsigned int) () from /usr/lib/libstdc++.so.6
#5 0x404e45e8 in QThreadPrivate::createEventDispatcher (data=0x16c40) at
thread/qthread_unix.cpp:159
#6 0x404e4858 in QThreadPrivate::start (arg=0x168f8) at
thread/qthread_unix.cpp:183
#7 0x403080a0 in start_thread () from /lib/libpthread.so.0
#8 0x40a66898 in clone () from /lib/libc.so.6
#9 0x04010300 in ?? ()
#10 0x04010300 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) x/20i 0x40a060b4
0x40a060b4 <malloc+1208>: b,l 0x40a05d60 <malloc+356>,r0
0x40a060b8 <malloc+1212>: copy ret0,r5
0x40a060bc <malloc+1216>: mfctl tr3,ret0
0x40a060c0 <malloc+1220>: ldi 0,r23
0x40a060c4 <malloc+1224>: ldw -478(ret0),r25
0x40a060c8 <malloc+1228>: ldi 1,r24
0x40a060cc <malloc+1232>: depwi -1,31,1,r25
0x40a060d0 <malloc+1236>: copy r3,r26
0x40a060d4 <malloc+1240>: copy r19,r4
0x40a060d8 <malloc+1244>: be,l 100(sr2,r0),sr0,r31
0x40a060dc <malloc+1248>: ldi d2,r20
0x40a060e0 <malloc+1252>: copy r4,r19
0x40a060e4 <malloc+1256>: b,l 0x40a05d28 <malloc+300>,r0
0x40a060e8 <malloc+1260>: ldo -8(r5),r20
0x40a060ec <malloc+1264>: mfctl tr3,ret0
0x40a060f0 <malloc+1268>: ldi 0,r23
0x40a060f4 <malloc+1272>: ldw -478(ret0),r25
0x40a060f8 <malloc+1276>: ldi 1,r24
0x40a060fc <malloc+1280>: depwi -1,31,1,r25
0x40a06100 <malloc+1284>: copy r7,r26
(gdb) x/20i 0x40a06380
0x40a06380: b,l 0x40a0622c,r0
0x40a06384: copy r4,r19
0x40a06388: mfctl tr3,ret0
0x40a0638c: copy r5,r26
0x40a06390: ldw -478(ret0),r25
0x40a06394: ldi 0,r23
0x40a06398: depwi -1,31,1,r25
0x40a0639c: ldi 1,r24
0x40a063a0: copy r19,r4
0x40a063a4: be,l 100(sr2,r0),sr0,r31
0x40a063a8: ldi d2,r20
0x40a063ac: copy r4,r19
0x40a063b0: b,l,n 0x40a06290,r0
0x40a063b4: stw rp,-14(sp)
0x40a063b8: addil L%1000,r19,r1
0x40a063bc: ldo 40(sp),sp
0x40a063c0: ldw 35c(r1),ret0
0x40a063c4: stw r4,-34(sp)
0x40a063c8: copy r19,r4
0x40a063cc: stw r19,-20(sp)
--
Modestas Vainius <modes...@vainius.eu>
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