Partial balloon copy failure #398
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Thanks Avi. I will take a look soon On Thu, Jul 17, 2014 at 3:06 PM, Avi Kivity [email protected]
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#0 0x00000000003d2a72 in cli_hlt () at /home/avi/osv/arch/x64/processor.hh:242
#1 halt_no_interrupts () at /home/avi/osv/arch/x64/arch.hh:48
#2 osv::halt () at /home/avi/osv/core/power.cc:34
#3 0x0000000000223df0 in abort (fmt=fmt@entry=0x5c99c0 "Assertion failed: %s (%s: %s: %d)\n") at /home/avi/osv/runtime.cc:139
#4 0x0000000000223e99 in __assert_fail (expr=, file=, line=, func=) at /home/avi/osv/runtime.cc:145
#5 0x0000000000372709 in page_fault (ef=0xffff80003fd03038) at /home/avi/osv/arch/x64/mmu.cc:34
#6
#7 0x0000000000337047 in elf::object::symtab_len (this=this@entry=0xffffa00038740c00) at /home/avi/osv/core/elf.cc:737
#8 0x0000000000337159 in elf::object::lookup_addr (this=0xffffa00038740c00, addr=addr@entry=0x100001438964 MoveAndUpdateClosure::copy_partial_obj()+292) at /home/avi/osv/core/elf.cc:767
#9 0x00000000003394f7 in operator() (ml=..., __closure=) at /home/avi/osv/core/elf.cc:1147
#10 with_modules<elf::program::lookup_addr(void const*)::__lambda6> (f=..., this=0xffffa0003fc05400) at /home/avi/osv/include/osv/elf.hh:597
#11 elf::program::lookup_addr (this=, addr=addr@entry=0x100001438964 MoveAndUpdateClosure::copy_partial_obj()+292) at /home/avi/osv/core/elf.cc:1153
#12 0x00000000003da98c in osv::lookup_name_demangled (addr=addr@entry=0x100001438964 MoveAndUpdateClosure::copy_partial_obj()+292, buf=buf@entry=0xffff800035bf87a0 "???+3610006",
#13 0x0000000000223ca1 in print_backtrace () at /home/avi/osv/runtime.cc:97
#14 0x0000000000223e57 in abort (fmt=fmt@entry=0x5c99c0 "Assertion failed: %s (%s: %s: %d)\n") at /home/avi/osv/runtime.cc:131
#15 0x0000000000223e99 in __assert_fail (expr=, file=, line=, func=) at /home/avi/osv/runtime.cc:145
#16 0x0000000000326273 in mmu::jvm_balloon_vma::add_partial (this=this@entry=0xffffa00094d2ef00, partial=partial@entry=524288,
#17 0x0000000000341924 in jvm_balloon_fault (b=std::shared_ptr (count 3, weak 0) 0xffffa0003e0d1c00, ef=ef@entry=0xffff800035bf9068, vma=vma@entry=0xffffa00094d2ef00)
#18 0x0000000000329e04 in mmu::jvm_balloon_vma::fault (this=0xffffa00094d2ef00, fault_addr=32431996928, ef=0xffff800035bf9068) at /home/avi/osv/core/mmu.cc:1430
#19 0x0000000000325da5 in mmu::vm_fault (addr=, addr@entry=32431999832, ef=ef@entry=0xffff800035bf9068) at /home/avi/osv/core/mmu.cc:1217
#20 0x00000000003726aa in page_fault (ef=0xffff800035bf9068) at /home/avi/osv/arch/x64/mmu.cc:38
#21
#22 0x000000000036e973 in repmovsb (n=, src=, dest=) at /home/avi/osv/arch/x64/string.cc:100
#23 memcpy_repmov (dest=0x78c480000, src=0x78d190b58, n=524288) at /home/avi/osv/arch/x64/string.cc:225
#24 0x0000100001438965 in MoveAndUpdateClosure::copy_partial_obj() ()
#25 0x0000100001439093 in PSParallelCompact::fill_region(ParCompactionManager*, unsigned long) ()
#26 0x000010000142b62c in ParCompactionManager::drain_region_stacks() ()
#27 0x0000100001410c9a in DrainStacksCompactionTask::do_it(GCTaskManager*, unsigned int) ()
#28 0x0000100001148c62 in GCTaskThread::run() ()
#29 0x00001000013d0f22 in java_start(Thread*) ()
#30 0x0000000000423136 in operator() (__closure=0xffffa00037057700) at /home/avi/osv/libc/pthread.cc:79
#31 std::_Function_handler<void(), pthread_private::pthread::pthread(void* ()(void), void*, sigset_t, const pthread_private::thread_attr*)::__lambda5>::_M_invoke(const std::_Any_data &) (
#32 0x00000000003be11b in main (this=0xffff800035bf4040) at /home/avi/osv/core/sched.cc:915
#33 sched::thread_main_c (t=0xffff800035bf4040) at /home/avi/osv/arch/x64/arch-switch.hh:137
#34 0x0000000000372516 in thread_main () at /home/avi/osv/arch/x64/entry.S:113
1406 bool jvm_balloon_vma::add_partial(size_t partial, unsigned char *eff)
1407 {
1408 if (_effective_jvm_addr) {
1409 assert(eff == _effective_jvm_addr);
1410 } else {
1411 _effective_jvm_addr= eff;
1412 }
1413
1414 _partial_copy += partial;
(gdb) p partial
$1 = 524288
(gdb) p eff
$2 = (unsigned char *) 0x78b8aadd0 <error: Cannot access memory at address 0x78b8aadd0>
(gdb) p _effective_jvm_addr
$3 = (unsigned char *) 0x77e6c4470 ""
(gdb)
p _this
$4 = {
mmu::vma = {
_vptr.vma = 0x638690 <vtable for mmu::jvm_balloon_vma+16>,
_range = {
_start = 32419872768,
_end = 32551993344
},
perm = 3,
flags = 81,
map_dirty = true,
page_ops = 0x9b0598 mmu::page_allocator_noinit,
vma_list_hook = {
<boost::intrusive::detail::generic_hook<boost::intrusive::get_set_node_algo<void, false>, boost::intrusive::member_tag, (boost::intrusive::link_mode_type)1, 0>> = {
boost::intrusive::detail::no_default_definer = {},
boost::intrusive::rbtree_node<void*> = {
parent = 0xffffa00061893e30,
left = 0x0,
right = 0x0,
color = boost::intrusive::rbtree_node<void*>::black_t
}, }, }
},
members of mmu::jvm_balloon_vma:
_balloon = std::shared_ptr (count 3, weak 0) 0xffffa0003e0d1c00,
_jvm_addr = 0x78c5bb928 "",
_effective_jvm_addr = 0x77e6c4470 "",
_partial_addr = 0,
_partial_vma = 0x0,
_partial_copy = 488632,
_real_perm = 3,
_real_flags = 17,
_real_size = 132120576
}
p *_balloon ._M_ptr
$9 = {
_jvm_addr = 0x7c249a3a8 "T",
_jref = 0xffffa00033fc8860,
_alignment = 2097152,
_balloon_size = 134217728
}
to reproduce: tomcat + json-servlet + wrk, for a long time
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