1 files changed, 48 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:32b/output/syscall/1701971 b/results/classifier/deepseek-r1:32b/output/syscall/1701971
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index 000000000..34a76741a
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+++ b/results/classifier/deepseek-r1:32b/output/syscall/1701971
@@ -0,0 +1,48 @@
+
+
+
+multithreading not working right under qemu user mode for sh4
+
+In a multithreaded program running under qemu-sh4 (version 2.9.0), thread termination and/or pthread_join is not working right.
+
+The attached program works natively on all kinds of platforms, and under qemu user mode emulation for at least alpha, armelhf, aarch64, powerpc64le.
+
+How to reproduce:
+- Compile the program: sh4-linux-gnu-gcc-5 -O -Wall -lpthread -o test-tls test-tls.c
+- Set environment variables for running qemu-sh4.
+- ~/inst-qemu/2.9.0/bin/qemu-sh4 test-tls
+
+Expected behaviour: After the "Worker xxxxx dying" line, the main() function prints "OK", and the program terminates.
+
+Actual behaviour (only on sh4): After the "Worker xxxxx dying" line, it hangs. Attaching gdb to qemu shows 15 threads with a stack trace like
+#0  safe_syscall_base () at /build/qemu-2.9.0/linux-user/host/x86_64/safe-syscall.inc.S:75
+#1  0x00005584f86f4c48 in safe_futex (uaddr=<optimized out>, op=op@entry=128, val=val@entry=2, timeout=<optimized out>, uaddr2=uaddr2@entry=0x0, 
+    val3=val3@entry=-161181992) at /build/qemu-2.9.0/linux-user/syscall.c:921
+#2  0x00005584f870353b in do_futex (val3=-161181992, uaddr2=4134624624, timeout=0, val=<optimized out>, op=<optimized out>, uaddr=<optimized out>)
+    at /build/qemu-2.9.0/linux-user/syscall.c:7147
+#3  do_syscall (cpu_env=<optimized out>, num=240, arg1=<optimized out>, arg2=<optimized out>, arg3=<optimized out>, arg4=0, arg5=-160342672, 
+    arg6=-161181992, arg7=0, arg8=0) at /build/qemu-2.9.0/linux-user/syscall.c:11692
+#4  0x00005584f86f454a in cpu_loop (env=env@entry=0x5584fb3d04f8) at /build/qemu-2.9.0/linux-user/main.c:2676
+#5  0x00005584f86f5dd5 in clone_func (arg=0x7fff4d485c20) at /build/qemu-2.9.0/linux-user/syscall.c:6234
+#6  0x00007f08f05a46ba in start_thread (arg=0x7f08f1368700) at pthread_create.c:333
+#7  0x00007f08f02da3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
+
+and 1 thread with a stack trace like
+#0  safe_syscall_base () at /build/qemu-2.9.0/linux-user/host/x86_64/safe-syscall.inc.S:75
+#1  0x00005584f86f4c48 in safe_futex (uaddr=<optimized out>, op=op@entry=0, val=val@entry=18875, timeout=<optimized out>, uaddr2=uaddr2@entry=0x0, 
+    val3=val3@entry=-161180376) at /build/qemu-2.9.0/linux-user/syscall.c:921
+#2  0x00005584f870353b in do_futex (val3=-161180376, uaddr2=4135101768, timeout=0, val=<optimized out>, op=<optimized out>, uaddr=<optimized out>)
+    at /build/qemu-2.9.0/linux-user/syscall.c:7147
+#3  do_syscall (cpu_env=<optimized out>, num=240, arg1=<optimized out>, arg2=<optimized out>, arg3=<optimized out>, arg4=0, arg5=-159865528, 
+    arg6=-161180376, arg7=0, arg8=0) at /build/qemu-2.9.0/linux-user/syscall.c:11692
+#4  0x00005584f86f454a in cpu_loop (env=0x5584fb3b99a8) at /build/qemu-2.9.0/linux-user/main.c:2676
+#5  0x00005584f86c12d3 in main (argc=<optimized out>, argv=0x7fff4d4878b8, envp=<optimized out>)
+    at /build/qemu-2.9.0/linux-user/main.c:4860
+
+and 1 thread with a stack trace like
+#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
+#1  0x00005584f876eab5 in qemu_futex_wait (val=<optimized out>, f=<optimized out>) at /build/qemu-2.9.0/include/qemu/futex.h:26
+#2  qemu_event_wait (ev=ev@entry=0x5584faa43d84 <rcu_call_ready_event>) at /build/qemu-2.9.0/util/qemu-thread-posix.c:399
+#3  0x00005584f87748ce in call_rcu_thread (opaque=<optimized out>) at /build/qemu-2.9.0/util/rcu.c:249
+#4  0x00007f08f05a46ba in start_thread (arg=0x7f08eff62700) at pthread_create.c:333
+#5  0x00007f08f02da3dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
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