On 08/18/2011 11:56 AM, Thomas Bächler wrote: > Am 18.08.2011 10:56, schrieb Milan Broz: >> I will report that upstream because this is quite unexpected result, easily >> reproducible with simple clone() and dmsetup. > > Can you describe the test you are doing in more detail (or give me a few > shell commands or a C program to reproduce)? https://lkml.org/lkml/2011/8/18/112 Run dmsetup create aaa --table "0 100 zero" -vvvv dmsetup remove aaa -vvvv (it should work) Then run e.g. such program in parallel: (uevent fails and dmsetup receive "uevent not sent" taking wrong error path) #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sched.h> #include <sys/types.h> #include <sys/wait.h> #define STACK_MIN 4096 int clone_start(void* x) { printf("child running...\n"); sleep(30); return 0; } int main (int argc, char *argv[]) { char stack[STACK_MIN]; int waitpid_status; int clone_flags = SIGCHLD | CLONE_NEWNET; pid_t pid = clone(clone_start, stack + STACK_MIN, clone_flags, (void *) argv); if (pid == -1) { printf("clone()\n"); exit(1); } printf("waiting for pid: %d ...\n", (int) pid); pid = waitpid(pid, &waitpid_status, 0); if (pid < 0) { printf("waitpid()\n"); exit(1); } return 0; } _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
