Samba 3.3.4 on AIX: coredump
miguel.sanders at arcelormittal.com
miguel.sanders at arcelormittal.com
Thu Apr 30 12:24:28 GMT 2009
Crap I compiled with optimizations.
Better leave that out now :-)
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Miguel SANDERS
ArcelorMittal Gent
UNIX Systems & Storage
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E miguel.sanders at arcelormittal.com
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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 14:17
Aan: w.jojo at hvcc.edu
CC: samba-technical at lists.samba.org
Onderwerp: RE: Samba 3.3.4 on AIX: coredump
I compiled it with --enable-debug so it has been compiled with -g.
Any idea why the core file is not a fullcore?
Build options were:
LIBS="-lldap -llber -lgssapi_krb5 -lkrb5 -lcom_err -lsasl2 -lk5crypto -lcrypto -lssl" CPPFLAGS="-I/usr/samba/include -I/usr/include" AR="/usr/bin/ar -X64" CFLAGS="-O3 -q64 -L/usr/samba/lib -L/usr/lib" ./configure --with-ads --enable-shared-libs --prefix=/tmp/samba/compile --enable-debug
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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Van: William Jojo [mailto:w.jojo at hvcc.edu]
Verzonden: donderdag 30 april 2009 14:09
Aan: SANDERS Miguel
CC: samba-technical at lists.samba.org
Onderwerp: Re: Samba 3.3.4 on AIX: coredump
miguel.sanders at arcelormittal.com wrote:
> 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"
>
>
The variable inbuf may not be NULL. We actually don't know what it is since the debug info is incomplete. The memory reference appears to be for segment 0x1 which is the program text segment. If you compile with the -g option you should be able to glean more info.
I have 3.3.4 running presently on 5.3 without coredumps. Can you give any other info about your build options that may shed some light on this?
Cheers,
Bill
> 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.o
> rg
> [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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