Samba 3.3.4 on AIX: coredump

[miguel.sanders at arcelormittal.com]

After digging a bit further in the coredump I saw the following:

process_smb(inbuf = warning: Unable to access address 0x11037be60 from core
(invalid char ptr (0x000000011037be60)), nread = 648535941221086152, unread_bytes = 1241085664, encrypted = @0x000a85df10001d60), line 1566 in "process.c"
unnamed block in smbd_process(), line 1934 in "process.c"
smbd_process(), line 1934 in "process.c"
main(argc = 0, argv = (nil)), line 1519 in "server.c"

While the code in smbd_process looks like this

        while (True) {
                NTSTATUS status;
                char *inbuf = NULL;
                size_t inbuf_len = 0;
                bool encrypted = false;
                TALLOC_CTX *frame = talloc_stackframe_pool(8192);

                errno = 0;

                run_events(smbd_event_context(), 0, NULL, NULL);

                status = receive_message_or_smb(
                        talloc_tos(), &inbuf, &inbuf_len,
                        &unread_bytes, &encrypted);

                if (!NT_STATUS_IS_OK(status)) {
                        DEBUG(3, ("receive_message_or_smb failed: %s, "
                                  "exiting\n", nt_errstr(status)));
                        return;
                }

                process_smb(inbuf, inbuf_len, unread_bytes, encrypted);

So the value passed to process_smb is NULL...
Anyone?

Met vriendelijke groet
Best regards
Bien à vous

Miguel SANDERS
ArcelorMittal Gent

UNIX Systems & Storage
IT Supply Western Europe | John Kennedylaan 51
B-9042 Gent

T +32 9 347 3538 | F +32 9 347 4901 | M +32478 805 023
E miguel.sanders at arcelormittal.com
www.arcelormittal.com/gent

-----Oorspronkelijk bericht-----
Van: samba-technical-bounces+miguel.sanders=arcelormittal.com at lists.samba.org [mailto:samba-technical-bounces+miguel.sanders=arcelormittal.com at lists.samba.org] Namens miguel.sanders at arcelormittal.com
Verzonden: donderdag 30 april 2009 13:03
Aan: samba-technical at lists.samba.org
Onderwerp: Samba 3.3.4 on AIX: coredump 

Hi guys

I just built 3.3.4 on AIX and whenever I access a share, I get a core dump.
Examining the coredump with dbx shows the following:

# dbx -d100 /tmp/samba/compile/sbin/smbd Type 'help' for help.
warning: The core file is not a fullcore. Some info may not be available.
[using memory image in core]
reading symbolic information ...

IOT/Abort trap in pthread_kill at 0x900000000549450
0x900000000549450 (pthread_kill+0xb0) e8410028          ld   r2,0x28(r1)
(dbx) where
pthread_kill(??, ??) at 0x900000000549450
_p_raise(??) at 0x900000000548cc8
raise.raise(??) at 0x90000000002ad0c
abort() at 0x900000000094144
dump_core(), line 242 in "fault.c"
smb_panic(why = warning: Unable to access address 0x11024f89c from core (invalid char ptr (0x000000011024f89c))), line 1689 in "util.c"
fault_report(sig = 268435455), line 46 in "fault.c"
sys_acl_get_entry(acl_d = (nil), entry_id = 268435455, entry_p = 0x0000000000000010), line 55 in "sysacls.c"
vfswrap_sys_acl_get_entry(handle = 0x0fffffffffffe100, theacl = 0x000000011008b53c, entry_id = 268435455, entry_p = 0x0000000200000002), line 1104 in "vfs_default.c"

I really don't understand what is going on here. 
As you can see the address of "theacl" in vfswrap_sys_acl_get_entry is valid but "acl_d" in sys_acl_get_entry is a NULL pointer.
The function merely looks like:
static int vfswrap_sys_acl_get_entry(vfs_handle_struct *handle,  SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p) {
        return sys_acl_get_entry(theacl, entry_id, entry_p); }

Anyone an idea what is happening? Am I interpreting this wrong?

Met vriendelijke groet
Best regards
Bien à vous

Miguel SANDERS
ArcelorMittal Gent

UNIX Systems & Storage
IT Supply Western Europe | John Kennedylaan 51
B-9042 Gent

T +32 9 347 3538 | F +32 9 347 4901 | M +32478 805 023 E miguel.sanders at arcelormittal.com www.arcelormittal.com/gent


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