Red Hat Bugzilla – Bug 785305
ocaml (bytecode) bindings segfault in 'add_drive_opts'
Last modified: 2012-06-20 03:00:14 EDT
Stupid error, easy to reproduce, simple fix.
+++ This bug was initially created as a clone of Bug #785290 +++
Description of problem:
Objective Caml version 3.12.1
# #use "topfind";;
- : unit = ()
Findlib has been successfully loaded. Additional directives:
#require "package";; to load a package
#list;; to list the available packages
#camlp4o;; to load camlp4 (standard syntax)
#camlp4r;; to load camlp4 (revised syntax)
#predicates "p,q,...";; to set these predicates
Topfind.reset();; to force that packages will be reloaded
#thread;; to enable threads
- : unit = ()
# #require "guestfs";;
/usr/lib64/ocaml/guestfs: added to search path
# #use "/usr/share/doc/ocaml-libguestfs-devel-1.17.2/create_disk.ml";;
val output : string = "disk.img"
libguestfs: trace: set_autosync true
libguestfs: trace: set_autosync = 0
Version-Release number of selected component (if applicable):
Doesn't segfault in native code.
--- Additional comment from firstname.lastname@example.org on 2012-01-27 16:42:00 EST ---
#0 __strlen_sse2 () at ../sysdeps/x86_64/strlen.S:32
#1 0x0000003a24686a76 in __GI___strdup (s=0x1 <Address 0x1 out of bounds>)
#2 0x00007ffff109bd8c in guestfs_safe_strdup ()
#3 0x00007ffff1335f76 in ocaml_guestfs_add_drive_opts (gv=1, readonlyv=1,
formatv=140737352560936, ifacev=1, namev=1, filenamev=1)
#4 0x000000000041b3d1 in caml_interprete (prog=0x7ffff7bd2010,
prog_size=<optimized out>) at interp.c:905
#5 0x000000000041cf73 in caml_main (argv=0x7fffffffdf08) at startup.c:424
#6 0x0000000000409dbc in main (argc=<optimized out>, argv=<optimized out>)
Note in frame #3 that filenamev is bogus; it should be
a string value.
--- Additional comment from email@example.com on 2012-01-27 17:36:04 EST ---
Created attachment 558048 [details]
(1) Save this attachment as 'bug785305.ml'
(2) chmod +x bug785305.ml
(3) Install ocaml-libguestfs-devel + dependencies
If it segfaults => bug
If it prints a message => OK
Technical note added. If any revisions are required, please edit the "Technical Notes" field
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No Documentation needed
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.