http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59302
Bug ID: 59302
Summary: tsan: Unexpected mmap in InternalAllocator!
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: Joost.VandeVondele at mat dot ethz.ch
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
One tsan test I'm doing fails with:
Unexpected mmap in InternalAllocator
apart from expecting a somewhat more useful output (e.g.
Sanitizer internal error: Unexpected mmap in InternalAllocator
)
Maybe this shouldn't happen ?
I'm getting this with the following backtrace:
[Switching to Thread 0x7ffff03ce100 (LWP 17517)]
Breakpoint 1, Allocate (stat=<optimized out>, alignment=<optimized out>,
size=<optimized out>, this=<optimized out>)
at ../../../../gcc/libsanitizer/sanitizer_common/sanitizer_allocator.h:948
948 MapUnmapCallback().OnMap(map_beg, map_size);
(gdb) bt
#0 Allocate (stat=<optimized out>, alignment=<optimized out>, size=<optimized
out>, this=<optimized out>)
at ../../../../gcc/libsanitizer/sanitizer_common/sanitizer_allocator.h:948
#1 Allocate (cleared=<optimized out>, alignment=<optimized out>,
size=<optimized out>, cache=<optimized out>, this=<optimized out>)
at ../../../../gcc/libsanitizer/sanitizer_common/sanitizer_allocator.h:1187
#2 RawInternalAlloc (cache=0x7ffff039e4c8, size=131080) at
../../../../gcc/libsanitizer/sanitizer_common/sanitizer_allocator.cc:75
#3 __sanitizer::InternalAlloc (size=131072, cache=0x7ffff039e4c8) at
../../../../gcc/libsanitizer/sanitizer_common/sanitizer_allocator.cc:93
#4 0x00007ffff35a6c6f in EnsureSize (size=4097, this=0x7ffff37dc310
<__tsan::ctx_placeholder+64656>) at
../../../../gcc/libsanitizer/tsan/tsan_vector.h:98
#5 PushBack (v=..., this=0x7ffff37dc310 <__tsan::ctx_placeholder+64656>) at
../../../../gcc/libsanitizer/tsan/tsan_vector.h:60
#6 HandleRacyStacks (thr=<optimized out>, addr_max=<optimized out>,
addr_min=<optimized out>, traces=...)
at ../../../../gcc/libsanitizer/tsan/tsan_rtl_report.cc:487
#7 __tsan::ReportRace (thr=<optimized out>) at
../../../../gcc/libsanitizer/tsan/tsan_rtl_report.cc:676
#8 0x00007ffff35a9e82 in __tsan_report_race_thunk () at
../../../../gcc/libsanitizer/tsan/tsan_rtl_amd64.S:122
#9 0x00007ffff3577a48 in HandleRace (old=..., cur=..., shadow_mem=<optimized
out>, thr=<optimized out>) at ../../../../gcc/libsanitizer/tsan/tsan_rtl.cc:376
#10 MemoryAccessImpl (cur=..., shadow_mem=<optimized out>, kIsAtomic=<optimized
out>, kAccessIsWrite=<optimized out>, kAccessSizeLog=<optimized out>,
addr=<optimized out>, thr=<optimized out>) at
../../../../gcc/libsanitizer/tsan/tsan_rtl.cc:460
#11 __tsan::MemoryAccess (thr=0x7ffff035b780, pc=542014296,
addr=3378151234108248, kAccessSizeLog=8, kAccessIsWrite=true, kIsAtomic=true)
at ../../../../gcc/libsanitizer/tsan/tsan_rtl.cc:531
#12 0x0004006f23be9d58 in ?? ()
#13 0x00000fffc0d69de0 in ?? ()
#14 0x0000000000000008 in ?? ()
#15 0x0000000000000000 in ?? ()
(gdb) cont
Continuing.
Unexpected mmap in InternalAllocator![Thread 0x7ffff03ce100 (LWP 17517) exited]
[Thread 0x7ffff0462100 (LWP 17516) exited]
[Thread 0x7ffff4cf6100 (LWP 17515) exited]
[Thread 0x7fffeefff700 (LWP 17514) exited]
[Inferior 1 (process 17510) exited with code 01]
