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Diffstat (limited to 'results/classifier/gemma3:12b/manual-review/1098729')
| -rw-r--r-- | results/classifier/gemma3:12b/manual-review/1098729 | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/manual-review/1098729 b/results/classifier/gemma3:12b/manual-review/1098729 new file mode 100644 index 00000000..b693708a --- /dev/null +++ b/results/classifier/gemma3:12b/manual-review/1098729 @@ -0,0 +1,44 @@ + +qemu-user-static for armhf: segfault in threaded code + + +Currently running QEMU from git (fedf2de31023) and running the armhf version of qemu-user-static which I have renamed qemu-armhf-static to follow the naming convention used in Debian. + +The host systems is a Debian testing x86_64-linux and I have an Debian testing armhf chroot which I invoke using schroot. + +Majority of program in the armhf chroot run fine, but I'm getting qemu segfaults in multi-threaded programs. + +As an example, I've grabbed the threads demo program here: + + https://computing.llnl.gov/tutorials/pthreads/samples/dotprod_mutex.c + +and changed NUMTHRDS from 4 to 10. I compile it as (same compile command on both x86_64 host and armhf guest): + + gcc -Wall -lpthread dotprod_mutex.c -o dotprod_mutex + +When compiled for x86_64 host it runs perfectly and even under Valgrind displays no errors whatsoever. + +However, when I compile the program in my armhs chroot and run it it usually (but not always) segaults or hangs or crashes. Example output: + + + (armhf) $ ./dotprod_mutex + Thread 1 did 100000 to 200000: mysum=100000.000000 global sum=100000.000000 + Thread 0 did 0 to 100000: mysum=100000.000000 global sum=200000.000000 + TCG temporary leak before f6731ca0 + qemu-arm-static: /home/erikd/Git/qemu-posix-timer-hacking/Upstream/tcg/tcg-op.h:2371: + tcg_gen_goto_tb: Assertion `(tcg_ctx.goto_tb_issue_mask & (1 << idx)) == 0' failed. + + + (armhf) $ ./dotprod_mutex + qemu: uncaught target signal 11 (Segmentation fault) - core dumped + Segmentation fault + + (armhf) $ ./dotprod_mutex + qemu-arm-static: /home/erikd/Git/qemu-posix-timer-hacking/Upstream/tcg/tcg.c:519: + tcg_temp_free_internal: Assertion `idx >= s->nb_globals && idx < s->nb_temps' failed. + + + (armhf) $ ./dotprod_mutex + Thread 1 did 100000 to 200000: mysum=100000.000000 global sum=100000.000000 + qemu: uncaught target signal 11 (Segmentation fault) - core dumped + Segmentation fault \ No newline at end of file |