[Bug 216358] Re: Samba crashes repeatedly to assert_uid
** Changed in: samba (Ubuntu) Status: Incomplete = Won't Fix -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in Ubuntu. https://bugs.launchpad.net/bugs/216358 Title: Samba crashes repeatedly to assert_uid To manage notifications about this bug go to: https://bugs.launchpad.net/samba/+bug/216358/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Thank you for taking the time to report this bug and helping to make Ubuntu better. There have been many changes in Ubuntu since that time you reported the bug and your problem may have been fixed with some of the updates. It would help us a lot if you could test it on a currently supported Ubuntu version. When you test it and it is still an issue, kindly upload the updated logs by running apport-collect 216358 and any other logs that are relevant for this particular issue. ** Changed in: samba (Ubuntu) Status: Confirmed = Incomplete -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in Ubuntu. https://bugs.launchpad.net/bugs/216358 Title: Samba crashes repeatedly to assert_uid To manage notifications about this bug go to: https://bugs.launchpad.net/samba/+bug/216358/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
** Changed in: samba Importance: Unknown = Medium -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. https://bugs.launchpad.net/bugs/216358 Title: Samba crashes repeatedly to assert_uid -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Intrepid Ibex reached end-of-life on 30 April 2010 so I am closing the report. Can anyone confirm whether this issue still exists in later versions of Ubuntu? ** Changed in: glibc (Ubuntu Intrepid) Status: New = Invalid ** Changed in: glibc (Ubuntu) Status: New = Incomplete -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Intrepid has reached EOL so im closing this SRU. ** Changed in: samba (Ubuntu Intrepid) Status: Confirmed = Won't Fix -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
I haven't seen this one happening in karmic/lucid, could anyone confirm ? -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
We are also randomly affected by this issue. I'm wondering if there is any progress in fixing these problems in Hardy. Nov 30 12:29:59 hm-server smbd[9133]: [2009/11/30 12:29:59, 0] lib/util_sec.c:set_effective_uid(205) Nov 30 12:29:59 hm-server smbd[9133]: setresuid failed with EAGAIN. uid(1027) might be over its NPROC limit Nov 30 12:29:59 hm-server smbd[9133]: [2009/11/30 12:29:59, 0] lib/util_sec.c:assert_uid(101) Nov 30 12:29:59 hm-server smbd[9133]: Failed to set uid privileges to (-1,1027) now set to (0,0) Nov 30 12:29:59 hm-server smbd[9133]: [2009/11/30 12:29:59, 0] lib/util.c:smb_panic(1633) Nov 30 12:29:59 hm-server smbd[9133]: PANIC (pid 9133): failed to set uid Nov 30 12:29:59 hm-server smbd[9133]: Nov 30 12:29:59 hm-server smbd[9133]: [2009/11/30 12:29:59, 0] lib/util.c:log_stack_trace(1737) Nov 30 12:29:59 hm-server smbd[9133]: BACKTRACE: 21 stack frames: Nov 30 12:29:59 hm-server smbd[9133]:#0 /usr/sbin/smbd(log_stack_trace+0x1c) [0x613c3c] Nov 30 12:29:59 hm-server smbd[9133]:#1 /usr/sbin/smbd(smb_panic+0x43) [0x613d23] Nov 30 12:29:59 hm-server smbd[9133]:#2 /usr/sbin/smbd [0x618de1] Nov 30 12:29:59 hm-server smbd[9133]:#3 /usr/sbin/smbd [0x4ba5de] Nov 30 12:29:59 hm-server smbd[9133]:#4 /usr/sbin/smbd(pop_sec_ctx+0x96) [0x4ba756] Nov 30 12:29:59 hm-server smbd[9133]:#5 /usr/sbin/smbd(unbecome_root+0x9) [0x4aff29] Nov 30 12:29:59 hm-server smbd[9133]:#6 /usr/sbin/smbd(uid_to_sid+0x171) [0x5d3f31] Nov 30 12:29:59 hm-server smbd[9133]:#7 /usr/sbin/smbd [0x4bfd6f] Nov 30 12:29:59 hm-server smbd[9133]:#8 /usr/sbin/smbd(get_nt_acl+0x44a) [0x4c438a] Nov 30 12:29:59 hm-server smbd[9133]:#9 /usr/sbin/smbd(is_visible_file+0x26e) [0x46e0ce] Nov 30 12:29:59 hm-server smbd[9133]:#10 /usr/sbin/smbd [0x46e650] Nov 30 12:29:59 hm-server smbd[9133]:#11 /usr/sbin/smbd(dptr_ReadDirName+0x54) [0x46e6c4] Nov 30 12:29:59 hm-server smbd[9133]:#12 /usr/sbin/smbd [0x4a5514] Nov 30 12:29:59 hm-server smbd[9133]:#13 /usr/sbin/smbd [0x4a8b43] Nov 30 12:29:59 hm-server smbd[9133]:#14 /usr/sbin/smbd(handle_trans2+0x1be) [0x4a92de] Nov 30 12:29:59 hm-server smbd[9133]:#15 /usr/sbin/smbd(reply_trans2+0x6ea) [0x4afc9a] Nov 30 12:29:59 hm-server smbd[9133]:#16 /usr/sbin/smbd [0x4c880e] Nov 30 12:29:59 hm-server smbd[9133]:#17 /usr/sbin/smbd(smbd_process+0x7cd) [0x4c9eed] Nov 30 12:29:59 hm-server smbd[9133]:#18 /usr/sbin/smbd(main+0x8cd) [0x6c609d] Nov 30 12:29:59 hm-server smbd[9133]:#19 /lib/libc.so.6(__libc_start_main+0xf4) [0x7f73d42951c4] Nov 30 12:29:59 hm-server smbd[9133]:#20 /usr/sbin/smbd [0x45a899] Nov 30 12:29:59 hm-server smbd[9133]: [2009/11/30 12:29:59, 0] lib/fault.c:dump_core(181) Nov 30 12:29:59 hm-server smbd[9133]: dumping core in /var/log/samba/cores/smbd -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
I've removed the patch flags from the previous attachments that were flagged as patches since they didn't seem to fix the issue although they are still patches. This will prevent the bug from showing up in the patched bug workflow which seems most appropriate so no action is to be taken with the old patches. Feel free to contact me directly if you feel this was incorrect. -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
I haven't reverted to plain samba, but I get output that has the line you mention in the logfile concerning my desktop computer (log.eos). I've attached the log. ** Attachment added: Samba logfile http://launchpadlibrarian.net/24397337/log.eos -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 216358] Re: Samba crashes repeatedly to assert_uid
Thierry Carrez wrote: Please let me know if all reporters run SELinux, so that I can comment on the upstream bug. Installed but default config (which I interpret to means 'effectively disabled'. I haven't managed to try the patched version yet - been at the UKUUG conference. Keith -- Theme Group 3 4 Grove Park Waltham Road White Waltham MAIDENHEAD Berkshire England SL6 3LW E: keith.matth...@themegroup.com T: +44 (0) 1628 829090 F: +44 (0) 1628 828877 I: +44 (0) 1628 828899 http://www.themegroup.com http://www.themegroup.com/ Theme Group is a wholly owned trading style of This That '95 Limited. Registered in England No: 3092394 at 7/8 Eghams Court, Boston Drive, Bourne End, Buckinghamshire. SL8 5YS. This message and its attached file(s), is strictly confidential and intended solely for the person whom it is addressed. It may contain personal and confidential information and as such may be protected by the Data Protection Act 1998. If you received this message in error, you must not copy, distribute or take any action in reliance on it. Please notify us as soon as possible and delete it and any attached files from your system. Any views expressed in this communication may not necessarily be the views held by Theme Group. As Internet communications are not secure we do not accept legal responsibility for the contents of this message nor responsibility for any change made to this message after the original sender sent it. Although we have taken steps to ensure that this email and attachments are free from any virus, we advise that in keeping with good computer practice the recipient should ensure they are actually virus free. We advise you to carry out your own virus check before opening any attachment, as Theme Group is not liable for any loss or damage arising in any way from this message or its attachments. Thank you for taking the time to read this as it may have been a complete waste of your time. Very few people bother to read these things but it proves how special you are 'cause you have, so thanks again. Please take time to read our terms and conditions at www.themegroup.co.uk/terms.pdf blocked::blocked::http://www.themegroup.co.uk/terms.pdf http://www.themegroup.co.uk/terms.pdf --- -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
I've installed the files from https://launchpad.net/~ttx/+archive/ppa and restarted the machine. It's running Hardy, and one of my shares are completely inaccessible from my Ubuntu desktop running gnome. Are there any other race conditions that should be avoided? My trace seems a bit different from the original bug post, as there are a few other system calls involved, namely unbecome_root(), gid_to_sid() and maybe more: [Thread debugging using libthread_db enabled] [New Thread 0xb7af76d0 (LWP 5391)] 0xb7f7d410 in __kernel_vsyscall () #0 0xb7f7d410 in __kernel_vsyscall () #1 0xb7c134d3 in waitpid () from /lib/tls/i686/cmov/libc.so.6 #2 0xb7bb6643 in ?? () from /lib/tls/i686/cmov/libc.so.6 #3 0xb7d7ed7d in system () from /lib/tls/i686/cmov/libpthread.so.0 #4 0x0828ad48 in smb_panic (why=0x83bf191 failed to set uid\n) at lib/util.c:1639 #5 0x08290f5e in assert_uid (ruid=4294967295, euid=1000) at lib/util_sec.c:102 #6 0x080fff3c in become_id (uid=1000, gid=1000) at smbd/sec_ctx.c:57 #7 0x081000d2 in pop_sec_ctx () at smbd/sec_ctx.c:345 #8 0x080f39d7 in unbecome_root () at smbd/uid.c:400 #9 0x082412bc in gid_to_sid (psid=0xbf803eb8, gid=1000) at passdb/lookup_sid.c:1202 #10 0x0810646c in create_file_sids (psbuf=0xbf803e58, powner_sid=value optimized out, pgroup_sid=0xbf803eb8) at smbd/posix_acls.c:669 #11 0x0810acbe in get_nt_acl (fsp=0x857dd50, security_info=7, ppdesc=0xbf803ff0) at smbd/posix_acls.c:2809 #12 0x08122e2b in vfswrap_fget_nt_acl (handle=0x851b988, fsp=0x857dd50, fd=-1, security_info=7, ppdesc=0xbf803ff0) at modules/vfs_default.c:921 #13 0x080ab18d in is_visible_file (conn=0x85602b8, dir_path=0x8503d30 ./, name=0x8579efb ad39a.odt, pst=0xbf804974, use_veto=1) at smbd/dir.c:897 #14 0x080ab8bd in dptr_normal_ReadDirName (dptr=0x8433bc8, poffset=0xbf8049f0, pst=0xbf804974) at smbd/dir.c:562 #15 0x080ab921 in dptr_ReadDirName (dptr=0x8433bc8, poffset=0x0, pst=0xbf804974) at smbd/dir.c:578 #16 0x080e8e4f in get_lanman2_dir_entry (conn=0x85602b8, inbuf=value optimized out, outbuf=0x853efa8 , path_mask=0xbf805b28 *, dirtype=22, info_level=260, requires_resume_key=4, dont_descend=0, ppdata=0xbf805b24, base_data=0x858bcc0 `, end_data=0x8590dc3 , space_remaining=10680, out_of_space=0xbf805b18, got_exact_match=0xbf805b0c, last_entry_off=0xbf805b20, name_list=0x0, ea_ctx=0x0) at smbd/trans2.c:1149 #17 0x080ec30e in call_trans2findfirst (conn=0x85602b8, inbuf=0x851eb60 , outbuf=0x853efa8 , bufsize=131072, pparams=0x851c6e8, total_params=18, ppdata=0x851c6f0, total_data=0, max_data_bytes=16644) at smbd/trans2.c:1859 #18 0x080ecb24 in handle_trans2 (conn=0x85602b8, state=0x851c5b0, inbuf=0x851eb60 , outbuf=0x853efa8 , size=90, bufsize=131072) at smbd/trans2.c:6433 #19 0x080f367c in reply_trans2 (conn=0x85602b8, inbuf=0x851eb60 , outbuf=0x853efa8 , size=90, bufsize=131072) at smbd/trans2.c:6703 #20 0x0810f93e in switch_message (type=50, inbuf=0x851eb60 , outbuf=0x853efa8 , size=90, bufsize=131072) at smbd/process.c:1004 #21 0x08110d9b in smbd_process () at smbd/process.c:1031 #22 0x0835ec68 in main (argc=-1212455687, argv=0xbf807814) at smbd/server.c:1120 ~$ dpkg -l | grep samba ii samba 3.0.28a-1ubuntu4.9~ppa1 ii samba-common 3.0.28a-1ubuntu4.9~ppa1 ii samba-dbg 3.0.28a-1ubuntu4.9~ppa1 Is this something that fits in this bug, or should i post a new? Anders -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Thanks anders for that new piece of information. Could you give the output of 'dpkg -l | grep samba' just to be sure that you are running the patch version? This seems to confirmed that the new version does fix Asynchronous I/O result, but not the fact that setreSuid results in EAGAIN error. That said, like I said, stopping samba on an EAGAIN error without retrying seems wrong. I don't think we can consider that getting an EAGAIN is a linux kernel bug. OTOH I guess we could, because it did not seems to do this in the past. -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Anders: thanks for testing ! Apparently my packages do not change anything :/ That might mean bug 341816 is not a duplicate of this one, I'll follow up on that one separately. The problem here is probably a similar one, but does not involve AIO code. ** Changed in: samba (Ubuntu) Assignee: Thierry Carrez (ttx) = (unassigned) Status: Fix Released = Confirmed ** Changed in: samba (Ubuntu Intrepid) Assignee: Thierry Carrez (ttx) = (unassigned) Status: In Progress = Confirmed -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Please let me know if all reporters run SELinux, so that I can comment on the upstream bug. -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
I posted this output in my previous post, but it was lost inside the Read more... link :) ~$ dpkg -l | grep samba ii samba 3.0.28a-1ubuntu4.9~ppa1 ii samba-common 3.0.28a-1ubuntu4.9~ppa1 ii samba-dbg 3.0.28a-1ubuntu4.9~ppa1 I've looked through the emails i got with the samba panic/segfault messages, and as far as I can see, they haven't changed after i installed the package from the PPA, which leads me to believe this is a different issue than the one this bug was originally about. The file included in the report, however, seems to be random, but is always a file in the root directory of the share (in this case ad3.odt). #13 0x080ab18d in is_visible_file (conn=0x85602b8, dir_path=0x8503d30 ./, name=0x8579efb ad39a.odt, pst=0xbf804974, use_veto=1) at smbd/dir.c:897 Is there any more information you need from me, or anything else i could do to help out more? Anders -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Thanks Anders, I should have seen this Read more... link. For me, this helps to know if samba logs have the following line: setresuid failed with EAGAIN. But the latest ppa1 version probably won't do that, you'd have to revert to plain samba first. And the Samba log are many files by default because of the: log file = /var/log/samba/log.%m inside /etc/samba/smb.conf file. Removing .%m at the end should allow to put all messages in one file, which could make it easier to grep EAGAIN on it. The idea is that this give a clue as if it have failed for permissions errors (no EAGAIN), or because of EAGAIN error, which is much more harder to understand why. But as current code, only show this #if USE_SETRESUID then not seeing EAGAIN message is not that much a clear information. Slightly rewriting that part could help a lot I guess. I am not too used to that kind of programming, but I guess I could try to write a little patch that would help to pinpoint the problem. (without really fixint it... although it could fix it). -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Proposed patch for Intrepid Packages also available for testing in my PPA (2:3.2.3-1ubuntu3.6~ppa1) at https://launchpad.net/~ttx/+archive/ppa I can't really reproduce the issue in the first place, so I'd welcome some testing to make sure this is indeed the right fix :) ** Attachment added: samba_3.2.3-1ubuntu3.6.debdiff http://launchpadlibrarian.net/24145405/samba_3.2.3-1ubuntu3.6.debdiff -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Well, I don't really can test it either, so it would have to be tested
by others.
I don't really understand, how this race between AIO and setresuid would affect
the result of setresuid.
Seems it's fix the result of the (Asynchronous IO), not of setresuid.
But I have an even much bigger problem with this.
My understanding of the problem (which could well be wrong), is that Linux have
effective user ID by thread,
rather than by process (this is one of the big guess I make that are often
wrong).
But POSIX works with uid on process rather than threads (yes, an other guess).
So, glibc guys, think that they should change effective uid of other threads of
the process to respect the POSIX standard.
Which does make sense to me (even if it may cause problems like race condition
with AIO, and maybe other stuff).
Now, my really big problem with all this, is that glibc seems to have made a
big error.
They seems to think that setresuid is a syscall in the POSIX standards, and
setreuid is not.
After all, they seems to have made setresuid ('being smart' about changing
other threads of the process).
But it is reverse, as far as I know: setresuid is not part of any POSIX
standard, but setreuid is.
Need to find back the pdf where I have read that.
Now, what would seems like a better patch for me, would be to simply make a
loop to retry 3 to 5 times,
the setresuid or setreuid, when the result is EAGAIN, which does means after
all, can not do your requested
operation now, please try again.
** Also affects: glibc (Ubuntu)
Importance: Undecided
Status: New
--
Samba crashes repeatedly to assert_uid
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[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Sigh. It is even a bit more complex than that: In Unix-like systems, user-level activities are implemented by running processes. Most Unix systems support a ``thread'' as a separate concept; threads share memory inside a process, and the system scheduler actually schedules threads. Linux does this differently (and in my opinion uses a better approach): there is no essential difference between a thread and a process. Instead, in Linux, when a process creates another process it can choose what resources are shared (e.g., memory can be shared). The Linux kernel then performs optimizations to get thread-level speeds; see clone(2) for more information. It's worth noting that the Linux kernel developers tend to use the word ``task'', not ``thread'' or ``process'', but the external documentation tends to use the word process (so I'll use the term ``process'' here). When programming a multi-threaded application, it's usually better to use one of the standard thread libraries that hide these differences. Taken from: http://linux.com/base/ldp/howto/Secure-Programs-HOWTO/processes.html -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Proposed patch for Hardy That fix was included in 3.0.34, 3.2.4 and 3.3.0 so Jaunty would be already fixed. Please confirm that it really fixes the issue by testing the hardy samba packages from my PPA (samba_3.0.28a-1ubuntu4.9~ppa1) at https://launchpad.net/~ttx/+archive/ppa ** Attachment added: samba_3.0.28a-1ubuntu4.9.debdiff http://launchpadlibrarian.net/24101526/samba_3.0.28a-1ubuntu4.9.debdiff -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
** Bug watch added: Samba Bugzilla #5549 https://bugzilla.samba.org/show_bug.cgi?id=5549 ** Also affects: samba via https://bugzilla.samba.org/show_bug.cgi?id=5549 Importance: Unknown Status: Unknown -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
** Changed in: samba (Ubuntu) Assignee: (unassigned) = Thierry Carrez (ttx) Status: Confirmed = In Progress -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
** Changed in: samba Status: Unknown = Confirmed -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
** Changed in: samba (Ubuntu Intrepid) Importance: Undecided = Medium Assignee: (unassigned) = Thierry Carrez (ttx) Status: New = Incomplete ** Changed in: samba (Ubuntu Intrepid) Status: Incomplete = In Progress ** Changed in: samba (Ubuntu) Status: In Progress = Fix Released -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Avoid a race condition in glibc between AIO and setresuid(): http://gitweb.samba.org/?p=samba.git;a=commit;h=c1ef3b8e28777f70086c8d2ee851e3a0b5b4ca4c Become root for AIO operations: http://gitweb.samba.org/?p=samba.git;a=commit;h=c60631879dbe6e87bc03c0412a4c8857b2f4339b ** Changed in: samba (Ubuntu) Importance: Low = Medium Status: Incomplete = Confirmed -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Ok, I think this time I have found. taken from 3.0.34 samba changelog (latest in 3.0): http://www.samba.org/samba/history/samba-3.0.34.html o Andrew Tridgell * Avoid a race condition in glibc between AIO and setresuid(). * Become root for AIO operations. This would explain why https://bugs.launchpad.net/ubuntu/+source/samba/+bug/341816 say that Build the sernet samba packages from source (3.0.34): http://ftp.sernet.de/pub/samba/old/src/debian/3.0.34 fix it. -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
In fact I believe it comes from that guy: http://webui.sourcelabs.com/rhel/issues/459901 he seems to suggest that the real problem is with the kernel not exactly implementing Posix correctly. I still have a doubt because he speak of setresuid changing the value of AIO, not changing the value of setresuid itself. OTOH, previous comment suggest that this fix the bug with ASSERT_UID. Maybe this also change the value returned by setresuid. -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 216358] Re: Samba crashes repeatedly to assert_uid
On Sat, Mar 14, 2009 at 02:39:53AM -, Paul Dufresne wrote: I now tend to think this is caused by the -1 not being casted to appropriate type in: setresgid(-1,gid,-1); and in: assert_uid(-1, uid); in lib/sec_util.c as I said in bug #314657 causing problems on 64 bits machines. Absolutely not. You don't have to cast integer types when passing them as function arguments, you just have to have a proper function prototype - which Samba has for all functions it uses. This can be confirmed by grepping for warnings in the build logs. -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. Ubuntu Developerhttp://www.debian.org/ slanga...@ubuntu.com vor...@debian.org -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Yeah, I began to realise I was wrong before reading you comment. I have a new, I hope better hypothesis now. It look a bit stupid, but maybe it is trying to become a deleted user. For ZDS (original poster) it would have means he would have deleted the nobody user (normally nobody have id 65534 in /etc/passwd, but I remember a time where I was deleting it for feeling my system more secure. Maybe even the user nogroup in /etc/group. For Berni, it would be not having a group 1001 in /etc/group Based on Failed to set uid privileges to (-1,1001) now set to (0,0) info. Try to look if sudo /etc/group | grep 1001 returns something. -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
For Berni, I meant: sudo cat /etc/group | grep 1001 of course. -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 216358] Re: Samba crashes repeatedly to assert_uid
On Sun, Mar 15, 2009 at 03:01:40AM -, Paul Dufresne wrote: It look a bit stupid, but maybe it is trying to become a deleted user. For ZDS (original poster) it would have means he would have deleted the nobody user (normally nobody have id 65534 in /etc/passwd, but I remember a time where I was deleting it for feeling my system more secure. Maybe even the user nogroup in /etc/group. Sorry, not this either. The setuid() calls don't require that the uid has a matching name on the system. -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. Ubuntu Developerhttp://www.debian.org/ slanga...@ubuntu.com vor...@debian.org -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
I now tend to think this is caused by the -1 not being casted to appropriate type in: setresgid(-1,gid,-1); and in: assert_uid(-1, uid); in lib/sec_util.c as I said in bug #314657 causing problems on 64 bits machines. But I am unsure. -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Bug #314657 and bug #229654 seems to be duplicates. Well, I would make them duplicates of this one, but, as it was marked invalid... hum, in fact looks more like Steve thinks his explanation for invaliding is doubtful. Guess I'll mark those duplicate of this one, and change to Incomplete. ** Changed in: samba (Ubuntu) Status: Invalid = Incomplete -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=468296 suggests it could be linked to roaming profiles. -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Steve, this could not be normal - in /etc/security/limits.conf there is no limit configured, and I dont know, but could it be unlimited as default in Ubuntuty Hardy ? Commenting out panic-action does not solve the problem, because it only prevents the mail and not the action. smbd still crashes and the users got the windows messages that their network drives are not available. Just a few minuts ago I had crashes after crashes and have to shut down samba and restart it, so I commented out the panic action but it smbs still crashes. Memtest shows now error with the memory and the rest of the system is running fine. There is still this strange samba behavior. -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
So again here is the last panic action output, a little longer, but still the NPROC limit error in the host logfile: [2008/10/06 08:49:27, 0] lib/util_sec.c:set_effective_uid(205) setresuid failed with EAGAIN. uid(1001) might be over its NPROC limit [2008/10/06 08:49:27, 0] lib/util_sec.c:assert_uid(101) Failed to set uid privileges to (-1,1001) now set to (0,0) [2008/10/06 08:49:27, 0] lib/util.c:smb_panic(1633) PANIC (pid 6517): failed to set uid [2008/10/06 08:49:27, 0] lib/util.c:log_stack_trace(1737) BACKTRACE: 20 stack frames: #0 /usr/sbin/smbd(log_stack_trace+0x1c) [0x613b1c] #1 /usr/sbin/smbd(smb_panic+0x43) [0x613c03] #2 /usr/sbin/smbd [0x618cc1] #3 /usr/sbin/smbd [0x4ba57e] #4 /usr/sbin/smbd(pop_sec_ctx+0x96) [0x4ba6f6] #5 /usr/sbin/smbd(unbecome_root+0x9) [0x4afec9] #6 /usr/sbin/smbd(gid_to_sid+0x168) [0x5d36b8] #7 /usr/sbin/smbd(get_nt_acl+0x44a) [0x4c432a] #8 /usr/sbin/smbd(is_visible_file+0x26e) [0x46e06e] #9 /usr/sbin/smbd [0x46e5f0] #10 /usr/sbin/smbd(dptr_ReadDirName+0x54) [0x46e664] #11 /usr/sbin/smbd [0x4a54b4] #12 /usr/sbin/smbd [0x4a8ae3] #13 /usr/sbin/smbd(handle_trans2+0x1be) [0x4a927e] #14 /usr/sbin/smbd(reply_trans2+0x6ea) [0x4afc3a] #15 /usr/sbin/smbd [0x4c879e] #16 /usr/sbin/smbd(smbd_process+0x7e2) [0x4c9b92] #17 /usr/sbin/smbd(main+0x8cd) [0x6c5f6d] #18 /lib/libc.so.6(__libc_start_main+0xf4) [0x7f22689ce1c4] #19 /usr/sbin/smbd [0x45a869] [2008/10/06 08:49:27, 0] lib/fault.c:dump_core(181) dumping core in /var/log/samba/cores/smbd [Thread debugging using libthread_db enabled] [New Thread 0x7f02cd972700 (LWP 6430)] 0x7f02cab804a5 in waitpid () from /lib/libc.so.6 #0 0x7f02cab804a5 in waitpid () from /lib/libc.so.6 #1 0x7f02cab21461 in ?? () from /lib/libc.so.6 #2 0x00613c4b in smb_panic (why=value optimized out) at lib/util.c:1639 #3 0x00618cc1 in assert_uid (ruid=4294967295, euid=1001) at lib/util_sec.c:102 #4 0x004ba57e in become_id (uid=1001, gid=100) at smbd/sec_ctx.c:57 #5 0x004ba6f6 in pop_sec_ctx () at smbd/sec_ctx.c:345 #6 0x004afec9 in unbecome_root () at smbd/uid.c:400 #7 0x005d36b8 in gid_to_sid (psid=0x7fffd5990990, gid=100) at passdb/lookup_sid.c:1202 #8 0x004c432a in get_nt_acl (fsp=0xb16fb0, security_info=7, ppdesc=0x7fffd5990ac8) at smbd/posix_acls.c:2809 #9 0x0046e06e in is_visible_file (conn=0xab9240, dir_path=0xa85ce0 ./, name=value optimized out, pst=0x7fffd5991490, use_veto=1) at smbd/dir.c:897 #10 0x0046e5f0 in dptr_normal_ReadDirName (dptr=0xa13ff0, poffset=0x7fffd5991558, pst=0x7fffd5991490) at smbd/dir.c:562 #11 0x0046e664 in dptr_ReadDirName (dptr=0xa13ff0, poffset=0x7fffd5991558, pst=0x7fffd5991490) at smbd/dir.c:642 #12 0x004a54b4 in get_lanman2_dir_entry (conn=0xab9240, inbuf=value optimized out, outbuf=0xadefb0 , path_mask=0x7fffd5992770 *, dirtype=22, info_level=260, requires_resume_key=4, dont_descend=0, ppdata=0x7fffd5992740, base_data=0xaff400 `, end_data=0xb043ff , space_remaining=10504, out_of_space=0x7fffd5992764, got_exact_match=0x7fffd599274c, last_entry_off=0x7fffd599276c, name_list=0x0, ea_ctx=0x0) at smbd/trans2.c:1149 #13 0x004a8ae3 in call_trans2findfirst (conn=0xab9240, inbuf=0xabeb60 , outbuf=0xadefb0 , bufsize=131072, pparams=0xabd460, total_params=value optimized out, ppdata=0xabd470, total_data=0, max_data_bytes=16384) at smbd/trans2.c:1859 #14 0x004a927e in handle_trans2 (conn=0xab9240, state=0xabd310, inbuf=0xabeb60 , outbuf=0xadefb0 , size=value optimized out, bufsize=131072) at smbd/trans2.c:6433 #15 0x004afc3a in reply_trans2 (conn=0xab9240, inbuf=0xabeb60 , outbuf=0xadefb0 , size=90, bufsize=131072) at smbd/trans2.c:6703 #16 0x004c879e in switch_message (type=50, inbuf=0xabeb60 , outbuf=0xadefb0 , size=90, bufsize=131072) at smbd/process.c:1004 #17 0x004c9b92 in smbd_process () at smbd/process.c:1031 #18 0x006c5f6d in main (argc=value optimized out, argv=0x7fffd59946f8) at smbd/server.c:1120 -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
I can confirm this kind of bug! On a new installed Hardy, Samab crashes not everytime but often: Log from the per Host logfile: [2008/10/04 20:09:57, 0] lib/util_sec.c:set_effective_uid(205) setresuid failed with EAGAIN. uid(1001) might be over its NPROC limit [2008/10/04 20:09:57, 0] lib/util_sec.c:assert_uid(101) Failed to set uid privileges to (-1,1001) now set to (0,0) [2008/10/04 20:09:57, 0] lib/util.c:smb_panic(1633) PANIC (pid 23366): failed to set uid [2008/10/04 20:09:57, 0] lib/util.c:log_stack_trace(1737) BACKTRACE: 20 stack frames: #0 /usr/sbin/smbd(log_stack_trace+0x1c) [0x613b1c] #1 /usr/sbin/smbd(smb_panic+0x43) [0x613c03] #2 /usr/sbin/smbd [0x618cc1] #3 /usr/sbin/smbd [0x4ba57e] #4 /usr/sbin/smbd(pop_sec_ctx+0x96) [0x4ba6f6] #5 /usr/sbin/smbd(unbecome_root+0x9) [0x4afec9] #6 /usr/sbin/smbd(gid_to_sid+0x168) [0x5d36b8] #7 /usr/sbin/smbd(get_nt_acl+0x44a) [0x4c432a] #8 /usr/sbin/smbd(is_visible_file+0x26e) [0x46e06e] #9 /usr/sbin/smbd [0x46e5f0] #10 /usr/sbin/smbd(dptr_ReadDirName+0x54) [0x46e664] #11 /usr/sbin/smbd [0x4a54b4] #12 /usr/sbin/smbd [0x4a8ae3] #13 /usr/sbin/smbd(handle_trans2+0x1be) [0x4a927e] #14 /usr/sbin/smbd(reply_trans2+0x6ea) [0x4afc3a] #15 /usr/sbin/smbd [0x4c879e] #16 /usr/sbin/smbd(smbd_process+0x7e2) [0x4c9b92] #17 /usr/sbin/smbd(main+0x8cd) [0x6c5f6d] #18 /lib/libc.so.6(__libc_start_main+0xf4) [0x7f02cab011c4] #19 /usr/sbin/smbd [0x45a869] [2008/10/04 20:09:57, 0] lib/util.c:smb_panic(1638) smb_panic(): calling panic action [/usr/share/samba/panic-action 23366] [2008/10/04 20:09:59, 0] lib/util.c:smb_panic(1646) smb_panic(): action returned status 0 [2008/10/04 20:09:59, 0] lib/fault.c:dump_core(181) dumping core in /var/log/samba/cores/smbd Panic-Action output: [Thread debugging using libthread_db enabled] [New Thread 0x7f02cd972700 (LWP 23366)] 0x7f02cab804a5 in waitpid () from /lib/libc.so.6 #0 0x7f02cab804a5 in waitpid () from /lib/libc.so.6 #1 0x7f02cab21461 in ?? () from /lib/libc.so.6 #2 0x00613c4b in smb_panic (why=value optimized out) at lib/util.c:1639 #3 0x00618cc1 in assert_uid (ruid=4294967295, euid=1001) at lib/util_sec.c:102 #4 0x004ba57e in become_id (uid=1001, gid=100) at smbd/sec_ctx.c:57 #5 0x004ba6f6 in pop_sec_ctx () at smbd/sec_ctx.c:345 #6 0x004afec9 in unbecome_root () at smbd/uid.c:400 #7 0x005d36b8 in gid_to_sid (psid=0x7fffd5990990, gid=100) at passdb/lookup_sid.c:1202 #8 0x004c432a in get_nt_acl (fsp=0xb407a0, security_info=7, ppdesc=0x7fffd5990ac8) at smbd/posix_acls.c:2809 #9 0x0046e06e in is_visible_file (conn=0xaa6da0, dir_path=0xa72060 ./, name=value optimized out, pst=0x7fffd5991490, use_veto=1) at smbd/dir.c:897 #10 0x0046e5f0 in dptr_normal_ReadDirName (dptr=0xa05440, poffset=0x7fffd5991558, pst=0x7fffd5991490) at smbd/dir.c:562 #11 0x0046e664 in dptr_ReadDirName (dptr=0xa05440, poffset=0x7fffd5991558, pst=0x7fffd5991490) at smbd/dir.c:642 #12 0x004a54b4 in get_lanman2_dir_entry (conn=0xaa6da0, inbuf=value optimized out, outbuf=0xadf130 , path_mask=0x7fffd5992770 *, dirtype=22, info_level=260, requires_resume_key=4, dont_descend=0, ppdata=0x7fffd5992740, base_data=0xb17410 `, end_data=0xb1c40f , space_remaining=7728, out_of_space=0x7fffd5992764, got_exact_match=0x7fffd599274c, last_entry_off=0x7fffd599276c, name_list=0x0, ea_ctx=0x0) at smbd/trans2.c:1149 #13 0x004a8ae3 in call_trans2findfirst (conn=0xaa6da0, inbuf=0xabece0 , outbuf=0xadf130 , bufsize=131072, pparams=0xaa5ce0, total_params=value optimized out, ppdata=0xaa5cf0, total_data=0, max_data_bytes=16384) at smbd/trans2.c:1859 #14 0x004a927e in handle_trans2 (conn=0xaa6da0, state=0xaa5b90, inbuf=0xabece0 , outbuf=0xadf130 , size=value optimized out, bufsize=131072) at smbd/trans2.c:6433 #15 0x004afc3a in reply_trans2 (conn=0xaa6da0, inbuf=0xabece0 , outbuf=0xadf130 , size=90, bufsize=131072) at smbd/trans2.c:6703 #16 0x004c879e in switch_message (type=50, inbuf=0xabece0 , outbuf=0xadf130 , size=90, bufsize=131072) at smbd/process.c:1004 #17 0x004c9b92 in smbd_process () at smbd/process.c:1031 #18 0x006c5f6d in main (argc=value optimized out, argv=0x7fffd59946f8) at smbd/server.c:1120 Unfortunately I got no core dump file. -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
berni123, Thanks for providing this log. Now that I see the log, the crash makes perfect sense. :) But I have to say that it's not a samba bug. What we're looking at is a failed assertion because the OS wouldn't let the process change UIDs; as the log says, this may be because the user has reached his limit on the number of processes allowed. So to fix this, you should do one of two things: - raise the process limit for your user (for instance, via /etc/security/limits.conf) if you want these connections to succeed - or, if you think the process limit is already set correctly, you can comment out the 'panic action' line in /etc/samba/smb.conf to suppress the email output. ** Changed in: samba (Ubuntu) Status: Incomplete = Invalid -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
** Changed in: samba (Ubuntu) Importance: Undecided = Low Status: New = Incomplete -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 216358] Re: Samba crashes repeatedly to assert_uid
Thank you for taking the time to report this issue and help to improve Ubuntu. Hitting this assertion error should also generate log entries. Could you please check /var/log/samba/log.smbd (or the per-host logfile) for entries of the form Failure to set uid privileges to [...]? Does this problem persist after restarting the samba service? -- Samba crashes repeatedly to assert_uid https://bugs.launchpad.net/bugs/216358 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
