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authorChristian Krinitsin <mail@krinitsin.com>2025-06-03 12:04:13 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-06-03 12:04:13 +0000
commit256709d2eb3fd80d768a99964be5caa61effa2a0 (patch)
tree05b2352fba70923126836a64b6a0de43902e976a /results/classifier/105/socket/1075272
parent2ab14fa96a6c5484b5e4ba8337551bb8dcc79cc5 (diff)
downloademulator-bug-study-256709d2eb3fd80d768a99964be5caa61effa2a0.tar.gz
emulator-bug-study-256709d2eb3fd80d768a99964be5caa61effa2a0.zip
add new classifier result
Diffstat (limited to 'results/classifier/105/socket/1075272')
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diff --git a/results/classifier/105/socket/1075272 b/results/classifier/105/socket/1075272
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+socket: 0.921
+instruction: 0.826
+network: 0.791
+device: 0.791
+other: 0.571
+graphic: 0.546
+mistranslation: 0.496
+vnc: 0.435
+boot: 0.360
+KVM: 0.290
+assembly: 0.110
+semantic: 0.011
+
+socket type mapping wrong for mips app-level emulation
+
+linux-user/syscall.c's do_socket function contains socket type remapping to work around the nonsensically-permuted MIPS socket types. However, it fails to account for the SOCK_NONBLOCK and SOCK_CLOEXEC flags that may be or'd onto the type. Thus, a call from the application such as:
+
+socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
+
+will fail to have the type permutation performed, and will be passed to the system as:
+
+socket(AF_INET, SOCK_DGRAM, IPPROTO_TCP)
+
+resulting in EPROTONOSUPPORT.
+
+To fix this, the flag bits should be masked off of the type before the permutation. They also need remapping themselves (since MIPS uses different values for these flags bits).
+
+This should be fixed in QEMU 1.6.
+
+