Public bug reported: With following testcase:
~/work/glibc$ cat foo.c #include <dlfcn.h> #include <stdio.h> int main(int argc, char **argv) { if (argc < 1) return 1; printf("Trying to open %s\n", argv[1]); void *liball = dlopen(argv[1], RTLD_NOW); if(liball == NULL) { printf("\nERROR: %s", dlerror()); return -1; } if(dlclose(liball)==0) {printf("\n all ok\n");} return 0; } compile with ~/work/glibc$ gcc -O0 -g foo.c -ldl then get segment fault: ~/work/glibc$ ./a.out intel64_lin/libsvml.so Trying to open intel64_lin/libsvml.so Segmentation fault (core dumped) coredump as: (gdb) bt #0 __GI___libc_free (mem=0x7ffff7d49010) at malloc.c:3085 #1 0x00007ffff7fdb6b6 in open_verify ( name=0x555555559670 "/home/lilicui/intel64_lin/libsvml.so", fbp=fbp@entry=0x7fffffffd530, loader=<optimized out>, mode=mode@entry=-1879048190, found_other_class=found_other_class@entry=0x7fffffffd51f, free_name=true, whatcode=0, fd=3) at dl-load.c:1977 #2 0x00007ffff7fdc926 in _dl_map_object (loader=loader@entry=0x7ffff7ffe190, name=name@entry=0x7fffffffe1b7 "/home/lilicui/intel64_lin/libsvml.so", type=type@entry=2, trace_mode=trace_mode@entry=0, mode=mode@entry=-1879048190, nsid=<optimized out>) at dl-load.c:2401 #3 0x00007ffff7fe79c4 in dl_open_worker (a=a@entry=0x7fffffffdaa0) at dl-open.c:228 #4 0x00007ffff7f1b48f in __GI__dl_catch_exception (exception=<optimized out>, operate=<optimized out>, args=<optimized out>) at dl-error-skeleton.c:196 #5 0x00007ffff7fe72c6 in _dl_open ( file=0x7fffffffe1b7 "/home/lilicui/intel64_lin/libsvml.so", mode=-2147483646, caller_dlopen=0x5555555551cb <main+86>, nsid=<optimized out>, argc=2, argv=0x7fffffffde08, env=0x7fffffffde20) at dl-open.c:599 #6 0x00007ffff7faa256 in dlopen_doit (a=a@entry=0x7fffffffdcc0) at dlopen.c:66 #7 0x00007ffff7f1b48f in __GI__dl_catch_exception ( exception=exception@entry=0x7fffffffdc60, operate=<optimized out>, --Type <RET> for more, q to quit, c to continue without paging-- args=<optimized out>) at dl-error-skeleton.c:196 #8 0x00007ffff7f1b51f in __GI__dl_catch_error ( objname=0x7ffff7fae0f0 <last_result+16>, errstring=0x7ffff7fae0f8 <last_result+24>, mallocedp=0x7ffff7fae0e8 <last_result+8>, operate=<optimized out>, args=<optimized out>) at dl-error-skeleton.c:215 #9 0x00007ffff7faaa25 in _dlerror_run ( operate=operate@entry=0x7ffff7faa200 <dlopen_doit>, args=args@entry=0x7fffffffdcc0) at dlerror.c:163 #10 0x00007ffff7faa2e6 in __dlopen (file=<optimized out>, mode=<optimized out>) at dlopen.c:87 #11 0x00005555555551cb in main (argc=2, argv=0x7fffffffde08) at foo.c:7 intel64_lin/libsvml.so is icc19.0(aleady released) runtime library, refer to attachment. Ubuntu version: ~/work/glibc$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.10 Release: 18.10 Codename: cosmic Glibc version: ~/work/glibc$ ldd --version ldd (Ubuntu GLIBC 2.28-0ubuntu1) 2.28 Copyright (C) 2018 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Written by Roland McGrath and Ulrich Drepper. It works fine with Glibc_2.28 upstream, and Glibc_2.28 on Fedora 29, but failed with Glibc 2.28 in Ubuntu 18.10 I found ubuntu18.10 was backporting its own patches, would that affect such testcase? ** Affects: glibc (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821677 Title: dl_open segment fault in ubuntu18.10 glibc2.28 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1821677/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs