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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 07:27:52 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 07:27:52 +0000 |
| commit | d0c85e36e4de67af628d54e9ab577cc3fad7796a (patch) | |
| tree | f8f784b0f04343b90516a338d6df81df3a85dfa2 /results/classifier/gemma3:12b/kernel/1416988 | |
| parent | 7f4364274750eb8cb39a3e7493132fca1c01232e (diff) | |
| download | qemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.tar.gz qemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.zip | |
add deepseek and gemma results
Diffstat (limited to 'results/classifier/gemma3:12b/kernel/1416988')
| -rw-r--r-- | results/classifier/gemma3:12b/kernel/1416988 | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/kernel/1416988 b/results/classifier/gemma3:12b/kernel/1416988 new file mode 100644 index 000000000..e263a424e --- /dev/null +++ b/results/classifier/gemma3:12b/kernel/1416988 @@ -0,0 +1,33 @@ + +Wrong signal handling in qemu-aarch64. + +Running GCC 5.0 testsuite under qemu-aarch64, I noticed that tests connected with stack unwinding fail with: + +qemu: uncaught target signal 11 (Segmentation fault) - core dumped + +or run into infinite loop. + +Here is one example: + +$ /home/max/build/gcc-aarch64/gcc/xgcc -B/home/max/build/gcc-aarch64/gcc/ /home/max/src/toolchain/gcc/gcc/testsuite/gcc.dg/cleanup-11.c -fexceptions -fnon-call-exceptions -O2 -lm -o ./cleanup-11.exe + +$ qemu-aarch64 -L /home/max/install/aarch64/aarch64-linux/sys-root/ -R 0 -/cleanup-11.exe +qemu: uncaught target signal 11 (Segmentation fault) - core dumped. + +Actually, this caused by ABI incompatibility between Linux Kernel (trunk) and qemu-aarch64. In fact, size of siginfo structure in Linux and target_siginfo structure in qemu-aarch64 differ: + +sizeof (struct target_siginfo) = 136 // QEMU +sizeof (struct siginfo) = 128 // Linux Kernel + + +This caused by wrong TARGET_SI_PAD_SIZE defined in linux-user/syscall_defs.h: + +#define TARGET_SI_PAD_SIZE ((TARGET_SI_MAX_SIZE/sizeof(int)) - 3) + +In Kernel respective value is: + +#define SI_PAD_SIZE ((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int)) +............................................. +#define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int)) // for Aarch64 + +Trivial fix, changing TARGET_SI_PAD_SIZE to right value, is attached. \ No newline at end of file |