| Message ID | 1437399237-23720-1-git-send-email-zhengjunling@huawei.com |
|---|---|
| State | New |
| Headers | show |
Ping... On 2015/7/20 21:33, Junling Zheng wrote: > When debugging a program on ARMv7 with thread-local storage declared using > "__thread", attempting to print a thread-local variable will result in the > following message: > > Cannot find thread-local storage for Thread <snip> (LWP <snip>), executable > file /tmp/tls: capability not available > > This can be traced back to uclibc libpthread/nptl_db/td_thr_tls_get_addr.c > which gdb uses to look up the address of the TLS. The function returns > TD_NOCAPAB due to a mismatch in size between the DTV pointer and the size > recorded in the db description. The problem lies in libpthread/nptl_db/db_info.c > which initializes the db with the sizeof the union dtv. Instead it should > be the sizeof a pointer to union dtv. > > Fixed the initial size for dtvp to sizeof a pointer, instead of sizeof > the union. > > Refer to: > http://sourceware.org/ml/libc-alpha/2006-10/msg00088.html > https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=416b630981788c1f08e746e19765aa0e5c2a1360 > > Signed-off-by: Junling Zheng <zhengjunling@huawei.com> > --- > libpthread/nptl_db/db_info.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/libpthread/nptl_db/db_info.c b/libpthread/nptl_db/db_info.c > index a57a053..159a027 100644 > --- a/libpthread/nptl_db/db_info.c > +++ b/libpthread/nptl_db/db_info.c > @@ -60,7 +60,7 @@ extern bool __nptl_initial_report_events; > i.e. at the very end of the area covered by TLS_PRE_TCB_SIZE. */ > DESC (_thread_db_pthread_dtvp, > TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv) > - - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv) > + - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv *) > #endif > > >
Ping again... This patch fixed the following issue: http://lists.uclibc.org/pipermail/uclibc/2015-May/048966.html Does anybody suffer this problem ? On 2015/7/31 18:37, Junling Zheng wrote: > Ping... > > On 2015/7/20 21:33, Junling Zheng wrote: >> When debugging a program on ARMv7 with thread-local storage declared using >> "__thread", attempting to print a thread-local variable will result in the >> following message: >> >> Cannot find thread-local storage for Thread <snip> (LWP <snip>), executable >> file /tmp/tls: capability not available >> >> This can be traced back to uclibc libpthread/nptl_db/td_thr_tls_get_addr.c >> which gdb uses to look up the address of the TLS. The function returns >> TD_NOCAPAB due to a mismatch in size between the DTV pointer and the size >> recorded in the db description. The problem lies in libpthread/nptl_db/db_info.c >> which initializes the db with the sizeof the union dtv. Instead it should >> be the sizeof a pointer to union dtv. >> >> Fixed the initial size for dtvp to sizeof a pointer, instead of sizeof >> the union. >> >> Refer to: >> http://sourceware.org/ml/libc-alpha/2006-10/msg00088.html >> https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=416b630981788c1f08e746e19765aa0e5c2a1360 >> >> Signed-off-by: Junling Zheng <zhengjunling@huawei.com> >> --- >> libpthread/nptl_db/db_info.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/libpthread/nptl_db/db_info.c b/libpthread/nptl_db/db_info.c >> index a57a053..159a027 100644 >> --- a/libpthread/nptl_db/db_info.c >> +++ b/libpthread/nptl_db/db_info.c >> @@ -60,7 +60,7 @@ extern bool __nptl_initial_report_events; >> i.e. at the very end of the area covered by TLS_PRE_TCB_SIZE. */ >> DESC (_thread_db_pthread_dtvp, >> TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv) >> - - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv) >> + - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv *) >> #endif >> >> >> > > > _______________________________________________ > uClibc mailing list > uClibc@uclibc.org > http://lists.busybox.net/mailman/listinfo/uclibc > >
On August 7, 2015 4:28:10 AM GMT+02:00, Junling Zheng <zhengjunling@huawei.com> wrote: >Ping again... Sorry for the delay, will apply the outstanding patches this weekend. Cheers, > >This patch fixed the following issue: >http://lists.uclibc.org/pipermail/uclibc/2015-May/048966.html > >Does anybody suffer this problem ? > >On 2015/7/31 18:37, Junling Zheng wrote: >> Ping... >> >> On 2015/7/20 21:33, Junling Zheng wrote: >>> When debugging a program on ARMv7 with thread-local storage declared >using >>> "__thread", attempting to print a thread-local variable will result >in the >>> following message: >>> >>> Cannot find thread-local storage for Thread <snip> (LWP <snip>), >executable >>> file /tmp/tls: capability not available >>> >>> This can be traced back to uclibc >libpthread/nptl_db/td_thr_tls_get_addr.c >>> which gdb uses to look up the address of the TLS. The function >returns >>> TD_NOCAPAB due to a mismatch in size between the DTV pointer and the >size >>> recorded in the db description. The problem lies in >libpthread/nptl_db/db_info.c >>> which initializes the db with the sizeof the union dtv. Instead it >should >>> be the sizeof a pointer to union dtv. >>> >>> Fixed the initial size for dtvp to sizeof a pointer, instead of >sizeof >>> the union. >>> >>> Refer to: >>> http://sourceware.org/ml/libc-alpha/2006-10/msg00088.html >>> >https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=416b630981788c1f08e746e19765aa0e5c2a1360 >>> >>> Signed-off-by: Junling Zheng <zhengjunling@huawei.com> >>> --- >>> libpthread/nptl_db/db_info.c | 2 +- >>> 1 file changed, 1 insertion(+), 1 deletion(-) >>> >>> diff --git a/libpthread/nptl_db/db_info.c >b/libpthread/nptl_db/db_info.c >>> index a57a053..159a027 100644 >>> --- a/libpthread/nptl_db/db_info.c >>> +++ b/libpthread/nptl_db/db_info.c >>> @@ -60,7 +60,7 @@ extern bool __nptl_initial_report_events; >>> i.e. at the very end of the area covered by TLS_PRE_TCB_SIZE. >*/ >>> DESC (_thread_db_pthread_dtvp, >>> TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv) >>> - - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv) >>> + - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv *) >>> #endif >>> >>> >>> >> >> >> _______________________________________________ >> uClibc mailing list >> uClibc@uclibc.org >> http://lists.busybox.net/mailman/listinfo/uclibc >> >> > > >_______________________________________________ >uClibc mailing list >uClibc@uclibc.org >http://lists.busybox.net/mailman/listinfo/uclibc
On 2015/8/8 16:03, Bernhard Reutner-Fischer wrote: > On August 7, 2015 4:28:10 AM GMT+02:00, Junling Zheng <zhengjunling@huawei.com> wrote: >> Ping again... > > Sorry for the delay, will apply the outstanding patches this weekend. Hi, Bernhard I found that uclibc-ng had already contained this fix. Should it be applied into uClibc? Thanks Junling > > Cheers, >> >> This patch fixed the following issue: >> http://lists.uclibc.org/pipermail/uclibc/2015-May/048966.html >> >> Does anybody suffer this problem ? >> >> On 2015/7/31 18:37, Junling Zheng wrote: >>> Ping... >>> >>> On 2015/7/20 21:33, Junling Zheng wrote: >>>> When debugging a program on ARMv7 with thread-local storage declared >> using >>>> "__thread", attempting to print a thread-local variable will result >> in the >>>> following message: >>>> >>>> Cannot find thread-local storage for Thread <snip> (LWP <snip>), >> executable >>>> file /tmp/tls: capability not available >>>> >>>> This can be traced back to uclibc >> libpthread/nptl_db/td_thr_tls_get_addr.c >>>> which gdb uses to look up the address of the TLS. The function >> returns >>>> TD_NOCAPAB due to a mismatch in size between the DTV pointer and the >> size >>>> recorded in the db description. The problem lies in >> libpthread/nptl_db/db_info.c >>>> which initializes the db with the sizeof the union dtv. Instead it >> should >>>> be the sizeof a pointer to union dtv. >>>> >>>> Fixed the initial size for dtvp to sizeof a pointer, instead of >> sizeof >>>> the union. >>>> >>>> Refer to: >>>> http://sourceware.org/ml/libc-alpha/2006-10/msg00088.html >>>> >> https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=416b630981788c1f08e746e19765aa0e5c2a1360 >>>> >>>> Signed-off-by: Junling Zheng <zhengjunling@huawei.com> >>>> --- >>>> libpthread/nptl_db/db_info.c | 2 +- >>>> 1 file changed, 1 insertion(+), 1 deletion(-) >>>> >>>> diff --git a/libpthread/nptl_db/db_info.c >> b/libpthread/nptl_db/db_info.c >>>> index a57a053..159a027 100644 >>>> --- a/libpthread/nptl_db/db_info.c >>>> +++ b/libpthread/nptl_db/db_info.c >>>> @@ -60,7 +60,7 @@ extern bool __nptl_initial_report_events; >>>> i.e. at the very end of the area covered by TLS_PRE_TCB_SIZE. >> */ >>>> DESC (_thread_db_pthread_dtvp, >>>> TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv) >>>> - - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv) >>>> + - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv *) >>>> #endif >>>> >>>> >>>> >>> >>> >>> _______________________________________________ >>> uClibc mailing list >>> uClibc@uclibc.org >>> http://lists.busybox.net/mailman/listinfo/uclibc >>> >>> >> >> >> _______________________________________________ >> uClibc mailing list >> uClibc@uclibc.org >> http://lists.busybox.net/mailman/listinfo/uclibc > > > > . >
Ping again...:( On 2015/9/21 9:53, Junling Zheng wrote: > On 2015/8/8 16:03, Bernhard Reutner-Fischer wrote: >> On August 7, 2015 4:28:10 AM GMT+02:00, Junling Zheng <zhengjunling@huawei.com> wrote: >>> Ping again... >> >> Sorry for the delay, will apply the outstanding patches this weekend. > > Hi, Bernhard > > I found that uclibc-ng had already contained this fix. > > Should it be applied into uClibc? > > Thanks > > Junling > >> >> Cheers, >>> >>> This patch fixed the following issue: >>> http://lists.uclibc.org/pipermail/uclibc/2015-May/048966.html >>> >>> Does anybody suffer this problem ? >>> >>> On 2015/7/31 18:37, Junling Zheng wrote: >>>> Ping... >>>> >>>> On 2015/7/20 21:33, Junling Zheng wrote: >>>>> When debugging a program on ARMv7 with thread-local storage declared >>> using >>>>> "__thread", attempting to print a thread-local variable will result >>> in the >>>>> following message: >>>>> >>>>> Cannot find thread-local storage for Thread <snip> (LWP <snip>), >>> executable >>>>> file /tmp/tls: capability not available >>>>> >>>>> This can be traced back to uclibc >>> libpthread/nptl_db/td_thr_tls_get_addr.c >>>>> which gdb uses to look up the address of the TLS. The function >>> returns >>>>> TD_NOCAPAB due to a mismatch in size between the DTV pointer and the >>> size >>>>> recorded in the db description. The problem lies in >>> libpthread/nptl_db/db_info.c >>>>> which initializes the db with the sizeof the union dtv. Instead it >>> should >>>>> be the sizeof a pointer to union dtv. >>>>> >>>>> Fixed the initial size for dtvp to sizeof a pointer, instead of >>> sizeof >>>>> the union. >>>>> >>>>> Refer to: >>>>> http://sourceware.org/ml/libc-alpha/2006-10/msg00088.html >>>>> >>> https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=416b630981788c1f08e746e19765aa0e5c2a1360 >>>>> >>>>> Signed-off-by: Junling Zheng <zhengjunling@huawei.com> >>>>> --- >>>>> libpthread/nptl_db/db_info.c | 2 +- >>>>> 1 file changed, 1 insertion(+), 1 deletion(-) >>>>> >>>>> diff --git a/libpthread/nptl_db/db_info.c >>> b/libpthread/nptl_db/db_info.c >>>>> index a57a053..159a027 100644 >>>>> --- a/libpthread/nptl_db/db_info.c >>>>> +++ b/libpthread/nptl_db/db_info.c >>>>> @@ -60,7 +60,7 @@ extern bool __nptl_initial_report_events; >>>>> i.e. at the very end of the area covered by TLS_PRE_TCB_SIZE. >>> */ >>>>> DESC (_thread_db_pthread_dtvp, >>>>> TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv) >>>>> - - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv) >>>>> + - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv *) >>>>> #endif >>>>> >>>>> >>>>> >>>> >>>> >>>> _______________________________________________ >>>> uClibc mailing list >>>> uClibc@uclibc.org >>>> http://lists.busybox.net/mailman/listinfo/uclibc >>>> >>>> >>> >>> >>> _______________________________________________ >>> uClibc mailing list >>> uClibc@uclibc.org >>> http://lists.busybox.net/mailman/listinfo/uclibc >> >> >> >> . >> > > > _______________________________________________ > uClibc mailing list > uClibc@uclibc.org > http://lists.busybox.net/mailman/listinfo/uclibc > >
diff --git a/libpthread/nptl_db/db_info.c b/libpthread/nptl_db/db_info.c index a57a053..159a027 100644 --- a/libpthread/nptl_db/db_info.c +++ b/libpthread/nptl_db/db_info.c @@ -60,7 +60,7 @@ extern bool __nptl_initial_report_events; i.e. at the very end of the area covered by TLS_PRE_TCB_SIZE. */ DESC (_thread_db_pthread_dtvp, TLS_PRE_TCB_SIZE + offsetof (tcbhead_t, dtv) - - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv) + - (TLS_TCB_SIZE == 0 ? sizeof (tcbhead_t) : 0), union dtv *) #endif
When debugging a program on ARMv7 with thread-local storage declared using "__thread", attempting to print a thread-local variable will result in the following message: Cannot find thread-local storage for Thread <snip> (LWP <snip>), executable file /tmp/tls: capability not available This can be traced back to uclibc libpthread/nptl_db/td_thr_tls_get_addr.c which gdb uses to look up the address of the TLS. The function returns TD_NOCAPAB due to a mismatch in size between the DTV pointer and the size recorded in the db description. The problem lies in libpthread/nptl_db/db_info.c which initializes the db with the sizeof the union dtv. Instead it should be the sizeof a pointer to union dtv. Fixed the initial size for dtvp to sizeof a pointer, instead of sizeof the union. Refer to: http://sourceware.org/ml/libc-alpha/2006-10/msg00088.html https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=416b630981788c1f08e746e19765aa0e5c2a1360 Signed-off-by: Junling Zheng <zhengjunling@huawei.com> --- libpthread/nptl_db/db_info.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)