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From: "alxchk at gmail dot com" <sourceware-bugzilla@sourceware.org> To: glibc-bugs@sourceware.org Subject: [Bug nptl/24776] pthread_key_create, pthread_setspecific are incompatible with dlmopen Date: Sun, 08 Aug 2021 05:15:24 +0000 [thread overview] Message-ID: <bug-24776-131-XRGdUyGF8A@http.sourceware.org/bugzilla/> (raw) In-Reply-To: <bug-24776-131@http.sourceware.org/bugzilla/> https://sourceware.org/bugzilla/show_bug.cgi?id=24776 Oleksii Shevchuk <alxchk at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |alxchk at gmail dot com --- Comment #11 from Oleksii Shevchuk <alxchk at gmail dot com> --- /tmp > cat ldr.c #define _GNU_SOURCE #include <dlfcn.h> #include <pthread.h> #include <stdio.h> #include <unistd.h> int main() { pthread_key_t key = 0xFFFFFFFF; pthread_key_create(&key, NULL); pthread_setspecific(key, (void*) 0xDEADBEEF); printf("[tid=%lx] Key created: %u with value %p\n", pthread_self(), key, pthread_getspecific(key)); printf("[New LMID]\n"); void *ldr2 = dlmopen(LM_ID_NEWLM, "./ldr2.so", RTLD_NOW | RTLD_LOCAL); if (!ldr2) { printf("ERR: %s\n", dlerror()); return -1; } printf("[Base LMID]\n"); ldr2 = dlmopen(LM_ID_BASE, "./ldr2.so", RTLD_NOW | RTLD_LOCAL); if (!ldr2) { printf("ERR: %s\n", dlerror()); return -1; } return 0; } /tmp > cat ldr2.c #define _GNU_SOURCE #include <pthread.h> #include <stdio.h> void init(int, char*[], char*[]) { pthread_key_t key = 0xFFFFFFFF; pthread_key_create(&key, NULL); printf("[tid=%lx] Key created: %u\n", pthread_self(), key); printf("[tid=%lx] Key value: %p\n", pthread_self(), pthread_getspecific(key)); } __attribute__((section(".init_array"))) void (* __init)(int, char*[], char*[]) = init; /tmp > gcc -o ldr ldr.c -pthread -ldl /tmp > gcc -shared -o ldr2.so ldr2.c -pthread /tmp > ./ldr [tid=7fe649b0a740] Key created: 0 with value 0xdeadbeef [New LMID] [tid=7fe649b0a740] Key created: 0 [tid=7fe649b0a740] Key value: 0xdeadbeef [Base LMID] [tid=7fe649b0a740] Key created: 2 [tid=7fe649b0a740] Key value: (nil) Pain.. -- You are receiving this mail because: You are on the CC list for the bug.
next prev parent reply other threads:[~2021-08-08 5:15 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <bug-24776-131@http.sourceware.org/bugzilla/> 2021-04-21 19:40 ` fweimer at redhat dot com 2021-05-31 18:10 ` fweimer at redhat dot com 2021-05-31 18:10 ` fweimer at redhat dot com 2021-08-08 5:15 ` alxchk at gmail dot com [this message] 2021-08-08 11:06 ` sware at reimardoeffinger dot de 2021-11-20 16:37 ` ppluzhnikov at google dot com 2022-10-01 17:16 ` jadahl at gmail dot com 2023-04-24 12:17 ` kristofer.berggren at gmail dot com
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