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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 07:27:52 +0000 |
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| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 07:27:52 +0000 |
| commit | d0c85e36e4de67af628d54e9ab577cc3fad7796a (patch) | |
| tree | f8f784b0f04343b90516a338d6df81df3a85dfa2 /results/classifier/gemma3:12b/socket/834 | |
| parent | 7f4364274750eb8cb39a3e7493132fca1c01232e (diff) | |
| download | emulator-bug-study-d0c85e36e4de67af628d54e9ab577cc3fad7796a.tar.gz emulator-bug-study-d0c85e36e4de67af628d54e9ab577cc3fad7796a.zip | |
add deepseek and gemma results
Diffstat (limited to 'results/classifier/gemma3:12b/socket/834')
| -rw-r--r-- | results/classifier/gemma3:12b/socket/834 | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/socket/834 b/results/classifier/gemma3:12b/socket/834 new file mode 100644 index 00000000..e612e98c --- /dev/null +++ b/results/classifier/gemma3:12b/socket/834 @@ -0,0 +1,60 @@ + +linux-user: fails to deliver signals raised during pselect +Description of problem: +When run via qemu a program which blocks signals but unmasks them during `pselect` does not catch these signals when returning from `pselect`. + +Used as reference on expected behavior: [The new pselect() system call](https://lwn.net/Articles/176911/) +Steps to reproduce: +A minimal test case below mimics behavior as encountered in the test suite of `p11-kit` ([link](https://github.com/p11-glue/p11-kit)) (which attempts to catch `SIGTERM` in a similar way and results in lingering processes after running the test suite). + +```C +#include <stdio.h> +#include <unistd.h> +#include <signal.h> +#include <sys/select.h> + +static void handler(int sig) +{ + puts("SIGNAL"); +} + +int main(int argc, char *argv[]) +{ + struct sigaction sa; + + fd_set rfds; + sigset_t emptyset, blockset; + + sigemptyset (&blockset); + sigemptyset (&emptyset); + sigaddset (&blockset, SIGUSR1); + + sa.sa_handler = handler; + sigemptyset(&sa.sa_mask); + sa.sa_flags = 0; + sigaction(SIGUSR1, &sa, NULL); + + sigprocmask (SIG_BLOCK, &blockset, NULL); + + FD_ZERO(&rfds); + + while(1) { + pselect(0, &rfds, NULL, NULL, NULL, &emptyset); + } + + return 0; +} +``` + +Running this without qemu should print _SIGNAL_ when sent `SIGUSR1`: + +``` +$ ./a.out & +[1] 1683587 +$ kill -USR1 %1 +$ SIGNAL +``` + +When run with `qemu-x86_64` however, it does not (also qemu's `-strace` confirms the signal isn't received whereas a strace of qemu shows it's in fact delivered). + +The pselect call itself _is_ interrupted, but the signal goes missing. |