diff options
Diffstat (limited to 'results/scraper/launchpad-without-comments/1874888')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1874888 | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1874888 b/results/scraper/launchpad-without-comments/1874888 new file mode 100644 index 00000000..52bd6c46 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1874888 @@ -0,0 +1,43 @@ +certain programs make QEMU crash with "tcg fatal error" + +The following code snippet crashes qemu with + +.../tcg/tcg.c:3279: tcg fatal error +qemu-x86_64: /usr/local/google/home/kostik/qemu-5.0.0-rc4/accel/tcg/cpu-exec.c:701: int cpu_exec(CPUState *): Assertion `!have_mmap_lock()' failed. + +================ +int main() { + /* +00000000 <.data>: + 0: 2e 45 71 ff cs rex.RB jno 0x3 + 4: e9 00 00 f0 00 jmp 0xf00009 + 9: c4 42 7d 31 3e vpmovzxbd ymm15,QWORD PTR [r14] + e: c4 a3 7d 08 64 82 44 vroundps ymm4,YMMWORD PTR [rdx+r8*4+0x44],0x0 + 15: 00 + 16: 0f 1e 0a nop DWORD PTR [rdx] + 19: 43 0f ec 20 rex.XB paddsb mm4,QWORD PTR [r8] + 1d: 66 47 0f 3a 0c 3d 00 rex.RXB blendps xmm15,XMMWORD PTR [rip+0x8000],0x0 # 0x8028 + 24: 80 00 00 00 + 28: c4 e3 f9 df 5f 86 0d vaeskeygenassist xmm3,XMMWORD PTR [rdi-0x7a],0xd + 2f: c4 e2 55 92 74 fc 0a vgatherdps ymm6,DWORD PTR [rsp+ymm7*8+0xa],ymm5 + 36: c4 e2 f9 17 9a 01 00 vptest xmm3,XMMWORD PTR [rdx+0x1] + 3d: 00 00 +*/ + char buf[] = { + 0x2E, 0x45, 0x71, 0xFF, 0xE9, 0x00, 0x00, 0xF0, 0x00, 0xC4, 0x42, 0x7D, 0x31, 0x3E, 0xC4, 0xA3, 0x7D, 0x08, 0x64, 0x82, 0x44, 0x00, 0x0F, 0x1E, 0x0A, 0x43, 0x0F, 0xEC, 0x20, 0x66, 0x47, 0x0F, 0x3A, 0x0C, 0x3D, 0x00, 0x80, 0x00, 0x00, 0x00, 0xC4, 0xE3, 0xF9, 0xDF, 0x5F, 0x86, 0x0D, 0xC4, 0xE2, 0x55, 0x92, 0x74, 0xFC, 0x0A, 0xC4, 0xE2, 0xF9, 0x17, 0x9A, 0x01, 0x00, 0x00, 0x00 + }; + void (*f)(void) = (void (*) (void))buf; + f(); + return 0; +} +================ +Steps to reproduce: +1) clang -static repro.c -o repro +2) qemu-x86_64-static repro + +Tested with 4.2.0 and 5.0.0-rc4. Both -user and -system variants are affected. + +A few more snippets that cause the same sort of behavior: +1) 0x64, 0x46, 0x7D, 0xFF, 0xDF, 0x27, 0x46, 0x0F, 0xD4, 0x83, 0x5E, 0x00, 0x00, 0x00, 0x3E, 0x0F, 0x6A, 0xEF, 0x0F, 0x05, 0xC4, 0x42, 0xFD, 0x1E, 0xCF, 0x46, 0x18, 0xE3, 0x47, 0xCD, 0x4E, 0x6E, 0x0F, 0x0F, 0x16, 0x8A + +2) 0x67, 0x45, 0xDB, 0xD0, 0xAA, 0xC4, 0xE2, 0xB1, 0x01, 0x57, 0x00, 0xF3, 0x6F, 0xF3, 0x42, 0x0F, 0x1E, 0xFD, 0x64, 0x2E, 0xF2, 0x45, 0xD9, 0xC4, 0x3E, 0xF3, 0x0F, 0xAE, 0xF4, 0x3E, 0x47, 0x0F, 0x1C, 0x22, 0x42, 0x73, 0xFF, 0xD9, 0xFD \ No newline at end of file |