CRASH x64 drinject stack mis-alignment: instr_create_restore_from_dc_via_reg()

From derek.br...@gmail.com on February 15, 2009 15:49:30

Just running release build x64 drinject on suite/tests/client-interface/strace I hit a somewhat non-deterministic crash: only happens within test harness. The problem is that drinject is not aligning the stack to 16 for the 3 calls it makes. The crash shows up like this:

(adc.158): Access violation - code c0000005 (first chance) First chance exceptions are reported before any exception handling. This exception may be expected and handled. dynamorio!instr_create_restore_from_dc_via_reg+0x10c: 000000007107fb2c 0f28442420 movaps xmm0,xmmword ptr [rsp+20h] ss:000000000012fa68=0000000800000128000000001f009006 0:000> kn

Child-SP RetAddr Call Site

00 000000000012fa48 0000000071066448 dynamorio!instr_create_restore_from_dc_via_reg+0x10c [d:\derek\opensource\dynamorio\core\x86\instr.c @ 4818] 01 000000000012fa98 0000000071068ab4 dynamorio!emit_fcache_enter_common+0x128 [d:\derek\opensource\dynamorio\core\x86\emit_utils.c @ 3173] 02 000000000012fc78 000000007105b103 dynamorio!emit_fcache_enter_shared+0x14 [d:\derek\opensource\dynamorio\core\x86\emit_utils.c @ 3825] 03 000000000012fcb8 000000007105b7c0 dynamorio!shared_gencode_init+0x113 [d:\derek\opensource\dynamorio\core\x86\arch.c @ 308] 04 000000000012fd48 000000007102470b dynamorio!arch_init+0x10 [d:\derek\opensource\dynamorio\core\x86\arch.c @ 523] 05 000000000012fd78 0000000071090562 dynamorio!dynamorio_app_init+0x10b [d:\derek\opensource\dynamorio\core\dynamo.c @ 463] 06 000000000012fde8 0000000071093a00 dynamorio!auto_setup+0x22 [d:\derek\opensource\dynamorio\core\x86\x86_code.c @ 144] 07 000000000012fe28 0000000000000000 dynamorio!dynamo_auto_start+0x10 0:000> r rax=0000000000000000 rbx=000000001f602270 rcx=ffffffffffffffff rdx=0000000000000068 rsi=ffffffffffffffff rdi=ffffffffffffffff rip=000000007107fb2c rsp=000000000012fa48 rbp=0000000000000000 r8 =000000001f5d2111 r9 =0000000000000128 r10 =0000000000000000 r11 =000000000012fbb8 r12 =0000000000000000 r13 =0000000000000000 r14 =000000001f601570 r15 =000000001f602280 iopl=0 nv up ei pl zr na po nc cs=0033 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010246 dynamorio!instr_create_restore_from_dc_via_reg+0x10c: 000000007107fb2c 0f28442420 movaps xmm0,xmmword ptr [rsp+20h] ss:000000000012fa68=0000000800000128000000001f009006

Original issue: http://code.google.com/p/dynamorio/issues/detail?id=13