Hi Philippe,
> Also, have you upgraded to 3.12, as suggested by John ?
Yes,I updated to 3.12 - could not see any difference to 3.11.
> Also, try with --read-inline-info=no
All the tests I did now (and the backtraces below) are done with this option
now -- does not seem to make any difference.
> Do you have the same problem with the none tool ?
You mean "--tool=none"? Looks like it isn't available...
# valgrind --tool=none --read-inline-info=no /usr/bin/FanCtrl
valgrind: failed to start tool 'none' for platform 'arm-linux': No such
file or directory
> According to the above, your problem is a SIGSEGV.
> But the trace below is a SIGILL.
> I think that this last signal is used during hw detection.
> You should continue execution till you encounter the 'problematic'
> SIGSEGV.
You are right - I didn't notice that.
If I continue, I hit a SIGSEGV. But this segmentation violation does not happen
always at the same code position (I have different backtraces).
One backtrace (I removed the python error lines out of it for better
readability):
Program received signal SIGSEGV, Segmentation fault.
resize (table=0x6150cd00) at m_hashtable.c:131
131 m_hashtable.c: No such file or directory.
(gdb) bt
#0 resize (table=0x6150cd00) at m_hashtable.c:131
#1 vgPlain_HT_add_node (table=0x6150cd00, vnode=<optimized out>)
at m_hashtable.c:152
#2 0x38100d54 in vgPlain_allocEltDedupPA (
elt=0x38b54a5c <vgPlain_interim_stack+1032856>, eltSzB=36, ddpa=0x61d9a480)
at m_deduppoolalloc.c:296
#3 vgPlain_allocFixedEltDedupPA (ddpa=0x61d9a480, eltSzB=eltSzB@entry=36,
elt=elt@entry=0x38b54a5c <vgPlain_interim_stack+1032856>)
at m_deduppoolalloc.c:319
#4 0x3809eb6c in vgModuleLocal_addDiCfSI (di=di@entry=0x61d9e290,
base=<optimized out>, len=4,
cfsi_m=0x38b54a5c <vgPlain_interim_stack+1032856>,
cfsi_m@entry=0x38b54a44 <vgPlain_interim_stack+1032832>)
at m_debuginfo/storage.c:839
#5 0x38118368 in run_CF_instructions (
adi=0x38b54a68 <vgPlain_interim_stack+1032868>,
restore_ctx=0x38b572f0 <vgPlain_interim_stack+1043244>, fde_arange=0,
ilen=6772, instrs=..., ctx=0x38b54aac <vgPlain_interim_stack+1032936>,
record=1 '\001', di=0x61d9e290) at m_debuginfo/readdwarf.c:3616
#6 vgModuleLocal_read_callframe_info_dwarf3 (di=di@entry=0x61d9e290,
escn_frame=..., frame_avma=frame_avma@entry=0,
is_ehframe=is_ehframe@entry=0 '\000') at m_debuginfo/readdwarf.c:4182
#7 0x38093580 in vgModuleLocal_read_elf_debug_info (di=di@entry=0x61d9e290)
at m_debuginfo/readelf.c:3082
#8 0x3808a320 in di_notify_ACHIEVE_ACCEPT_STATE (di=0x61d9e290)
at m_debuginfo/debuginfo.c:749
Python Exception <type 'exceptions.NameError'> Installation error:
gdb.execute_unwinders function is missing:
#9 vgPlain_di_notify_mmap (a=<optimized out>,
allow_SkFileV=allow_SkFileV@entry=1 '\001', use_fd=use_fd@entry=-1)
at m_debuginfo/debuginfo.c:1067
#10 0x38054bb4 in valgrind_main (envp=<optimized out>, argv=<optimized out>,
argc=<optimized out>) at m_main.c:2224
#11 _start_in_C_linux (pArgc=<optimized out>) at m_main.c:3407
#12 0x00000000 in ?? ()
Another run causes a bt that starts with this:
(gdb) bt
#0 vgPlain_HT_gen_lookup (table=<optimized out>,
node=0x38b54788 <vgPlain_interim_stack+1032132>,
node@entry=0x38b54780 <vgPlain_interim_stack+1032124>,
cmp=cmp@entry=0x38100404 <cmp_pool_elt>) at m_hashtable.c:182
#1 0x38100c24 in vgPlain_allocEltDedupPA (
elt=0x38b54a5c <vgPlain_interim_stack+1032856>, eltSzB=36, ddpa=0x61cdb480)
at m_deduppoolalloc.c:266
#2 vgPlain_allocFixedEltDedupPA (ddpa=0x61cdb480, eltSzB=eltSzB@entry=36,
elt=elt@entry=0x38b54a5c <vgPlain_interim_stack+1032856>)
at m_deduppoolalloc.c:319
#3 0x3809eb6c in vgModuleLocal_addDiCfSI (di=di@entry=0x61cdf290,
base=<optimized out>, len=4,
cfsi_m=0x38b54a5c <vgPlain_interim_stack+1032856>,
cfsi_m@entry=0x38b54a44 <vgPlain_interim_stack+1032832>)
at m_debuginfo/storage.c:839
#4 0x38118368 in run_CF_instructions (
adi=0x38b54a68 <vgPlain_interim_stack+1032868>,
restore_ctx=0x38b572f0 <vgPlain_interim_stack+1043244>, fde_arange=0,
ilen=40, instrs=..., ctx=0x38b54aac <vgPlain_interim_stack+1032936>,
record=1 '\001', di=0x61cdf290) at m_debuginfo/readdwarf.c:3616
#5 vgModuleLocal_read_callframe_info_dwarf3 (di=di@entry=0x61cdf290,
escn_frame=..., frame_avma=frame_avma@entry=0,
is_ehframe=is_ehframe@entry=0 '\000') at m_debuginfo/readdwarf.c:4182
---Type <return> to continue, or q <return> to quit---
Python Exception <type 'exceptions.NameError'> Installation error:
gdb.execute_unwinders function is missing:
#6 0x38093580 in vgModuleLocal_read_elf_debug_info (di=di@entry=0x61cdf290)
at m_debuginfo/readelf.c:3082
#7 0x3808a320 in di_notify_ACHIEVE_ACCEPT_STATE (di=0x61cdf290)
at m_debuginfo/debuginfo.c:749
I have also seen a backtrace that ended in some other file, but I failed to
save it.
> Note also that during execution, some 'normal' SIGSEGV are raised.
> On amd64, the bt looks like the below (in generated code).
> [...]
This does not seem to happen in my case. I do not see anything that looks
similar, and if i press 'c' (continue) after the first SIGSEGV, I get:
(gdb) c
Continuing.
Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
Frank
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