[PTLsim-devel] ptlxen-memory problem

Thu Sep 27 11:56:09 EDT 2007

Hi,

Am having a problem with the latest release of PTLsim (r225) and the
associated Xen release.

Quickly after starting the smt core, an assertion at
ptlxen-memory.cpp:1192 fails and the system crashes . Here is a snip of
the logfile:

---------------------------------------------------------------
host_mfn_to_sim_mfn(0): m2p sim mfn is out of range (-1 vs limit 262144);
caller 0x5bc66 at cycle 8206
host_mfn_to_sim_mfn(0): m2p sim mfn is out of range (-1 vs limit 262144);
caller 0x5bc66 at cycle 8352
host_mfn_to_sim_mfn(0): m2p sim mfn is out of range (-1 vs limit 262144);
caller 0x5bc66 at cycle 8353
host_mfn_to_sim_mfn(0): m2p sim mfn is out of range (-1 vs limit 262144);
caller 0x5bc66 at cycle 8354
host_mfn_to_sim_mfn(0): m2p sim mfn is out of range (-1 vs limit 262144);
caller 0x5bc66 at cycle 8355
[vcpu 0] Barrier (#37 -> 0xbda80 hypercall called from [0xffffffff80206408
64b krn mfn 518|519]; return to 0xffffffff8020640a) at 9123 cycles, 266
commits
[vcpu 0] hypercall (32) from 0xffffffff80385e6a at 9123 cycles, 266
commits: evtchn_send {port = 2} => inter    -> vcpu 0, remote domain 0,
remote port 26, rc 0
[vcpu 0] Barrier (#5 -> 0xc72a0 div<W32> called from [0xffffffff802288f6
64b krn mfn 552|553]; return to 0xffffffff802288f9) at 25962 cycles, 1974
commits
Invalid opcode at 0xffffffff80249a14: split_invalid_basic_blocks 0,
first_insn_in_bb? 1
translate: invalid opcode at iteration 26355: 0x10b commits 2080 (at
ripstart 0xffffffff80249a14, rip 0xffffffff80249a1b); may be speculative
Invalid opcode at 0xffffffff803804d5: split_invalid_basic_blocks 0,
first_insn_in_bb? 1
translate: invalid opcode at iteration 27290: 0x10b commits 2211 (at
ripstart 0xffffffff803804d5, rip 0xffffffff803804dc); may be speculative
[vcpu 0] thread 0: reset thread.last_commit_at_cycle to be before
redispatch_deadlock_recovery() 35761
Invalid opcode at 0xffffffff8038e8e4: split_invalid_basic_blocks 0,
first_insn_in_bb? 1
translate: invalid opcode at iteration 36481: 0x10b commits 3269 (at
ripstart 0xffffffff8038e8e4, rip 0xffffffff8038e8eb); may be speculative
host_mfn_to_sim_mfn(616): m2p sim mfn is out of range (-1 vs limit
262144); caller 0x61276 at cycle 36969

Assert false failed in ptlxen-memory.cpp:1192 (W64 loadphys(Waddr)) from
0x63b29 at 36969 cycles, 3290 commits, 36969 iterations
---------------------------------------------------------------------

Am wondering whether this problem had occurred to anyone before? or if
there is any hint to solve it.

Best regards,
Bashar Gharaibeh