Re: kqueue crash on FreeBSD with 2.2.25

[Goetz R Schultz]

Works for me (recompiled fresh). Thanks a lot.


Thanks and regards

  Goetz R. Schultz

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On 05/07/16 17:35, Timo Sirainen wrote:

Jul  1 10:07:27 imap dovecot: master: Panic: kevent(EV_ADD, READ, 54) failed: 
Bad file descriptor


Here's the fix for this: 
https://github.com/dovecot/core/commit/ffd8dc932516bc55bf01d91355540daab365e5e9





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Description: S/MIME Cryptographic Signature

Re: kqueue crash on FreeBSD with 2.2.25

[Timo Sirainen]

>> Jul  1 10:07:27 imap dovecot: master: Panic: kevent(EV_ADD, READ, 54) 
>> failed: Bad file descriptor

Here's the fix for this: 
https://github.com/dovecot/core/commit/ffd8dc932516bc55bf01d91355540daab365e5e9

Re: kqueue crash on FreeBSD with 2.2.25

[Edgar Pettijohn]

On 16-07-03 22:14:01, Edgar Pettijohn wrote:
> On 16-07-03 03:30:36, Timo Sirainen wrote:
> > On 02 Jul 2016, at 03:30, Adam Weinberger  wrote:
> > > 
> > >>> Jul  1 10:07:27 imap dovecot: master: Panic: kevent(EV_ADD, READ, 54) 
> > >>> failed: Bad file descriptor
> > >>> 
> > >>> It's not dumping core, and I get the message even with "protocols ="
> > >>> 
> > >>> Downgrading back to 2.2.24 fixes it. What info would be helpful for me 
> > >>> to provide here?
> > >> 
> > >> gdb backtrace: http://dovecot.org/bugreport.html#coredumps
> > >> 
> > > 
> > > Fuller logs attached. Thanks for your help, Timo.
> > > 
> > > #6  0x2815b23a in i_panic (format=0x281ccf7a "kevent(EV_ADD, READ, %d) 
> > > failed: %m") at failures.c:275
> > > #7  0x28185e10 in io_loop_handle_add (io=0x288843a0) at ioloop-kqueue.c:67
> > > #8  0x281815a8 in io_add_file (fd=56, condition=IO_READ, 
> > > source_linenum=244, callback=0x2818a7d0 , context=0x0) at 
> > > ioloop.c:59
> > > #9  0x281813a6 in io_add (fd=56, condition=IO_READ, source_linenum=244, 
> > > callback=0x2818a7d0 , context=0x0) at ioloop.c:81
> > > #10 0x2818a666 in lib_signals_set_handler (signo=1, flags=3, 
> > > handler=0x804e6c0 , context=0x0) at lib-signals.c:243
> > > #11 0x0804e129 in main_init (set=0x2881d098) at main.c:518
> > > #12 0x0804d562 in main (argc=3, argv=0xae08) at main.c:890
> > 
> > Weird. I haven't touched anything even close to that. Also kqueue works on 
> > my OSX. The only thing that comes to my mind is 
> > https://github.com/dovecot/core/commit/fde7b8a03bf91cfa5bb7ca3e84545386243fa0d2
> > 
> > Does it happen to work if you use the attached patch?
> > 
> 
> Still trying to learn git, but here is what happened when I tried applying 
> this diff.
> 
> Sun Jul 03 10:12:32 ~/dovecot/core $ git reset --hard 
> 3fea4d5988de365503df44a9b067e3b181cac65c 
> HEAD is now at 3fea4d5 master: Stopping didn't close dead-pipes early enough.
> Sun Jul 03 10:12:37 ~/dovecot/core $ git apply diff.patch 
>  
> error: patch failed: src/master/service-monitor.c:522
> error: src/master/service-monitor.c: patch does not apply
> error: patch failed: src/master/service-monitor.c:452
> error: src/master/service-monitor.c: patch does not apply
> error: patch failed: src/master/service-process.c:133
> error: src/master/service-process.c: patch does not apply
> error: patch failed: src/master/service.c:283
> error: src/master/service.c: patch does not apply
> error: patch failed: src/master/service.h:85
> error: src/master/service.h: patch does not apply
> 
> Same thing happened before the reset --hard.
> 
> -- 
> Edgar Pettijohn
It was a misconfiguration problem on my part causing the issues on OpenBSD.  
Probably the same for FreeBSD.  Had to make changes to /etc/login.conf 
to fix it.  However, the following diff keeps it from panicing and logs enough 
info to help figure out the problem.



-- 
Edgar Pettijohn
diff --git a/src/lib/ioloop-kqueue.c b/src/lib/ioloop-kqueue.c
index 881ce87..9c35202 100644
--- a/src/lib/ioloop-kqueue.c
+++ b/src/lib/ioloop-kqueue.c
@@ -63,12 +63,12 @@ void io_loop_handle_add(struct io_file *io)
 
if ((io->io.condition & (IO_READ | IO_ERROR)) != 0) {
MY_EV_SET(, io->fd, EVFILT_READ, EV_ADD, 0, 0, io);
-   if (kevent(ctx->kq, , 1, NULL, 0, NULL) < 0)
+   if (kevent(ctx->kq, , 1, NULL, 0, NULL) == -1)
i_panic("kevent(EV_ADD, READ, %d) failed: %m", io->fd);
}
if ((io->io.condition & IO_WRITE) != 0) {
MY_EV_SET(, io->fd, EVFILT_WRITE, EV_ADD, 0, 0, io);
-   if (kevent(ctx->kq, , 1, NULL, 0, NULL) < 0)
+   if (kevent(ctx->kq, , 1, NULL, 0, NULL) == -1)
i_panic("kevent(EV_ADD, WRITE, %d) failed: %m", io->fd);
}
 

Re: kqueue crash on FreeBSD with 2.2.25

[Aki Tuomi]

On 04.07.2016 06:14, Edgar Pettijohn wrote:
> On 16-07-03 03:30:36, Timo Sirainen wrote:
>> On 02 Jul 2016, at 03:30, Adam Weinberger  wrote:
> Jul  1 10:07:27 imap dovecot: master: Panic: kevent(EV_ADD, READ, 54) 
> failed: Bad file descriptor
>
> It's not dumping core, and I get the message even with "protocols ="
>
> Downgrading back to 2.2.24 fixes it. What info would be helpful for me to 
> provide here?
 gdb backtrace: http://dovecot.org/bugreport.html#coredumps

>>> Fuller logs attached. Thanks for your help, Timo.
>>>
>>> #6  0x2815b23a in i_panic (format=0x281ccf7a "kevent(EV_ADD, READ, %d) 
>>> failed: %m") at failures.c:275
>>> #7  0x28185e10 in io_loop_handle_add (io=0x288843a0) at ioloop-kqueue.c:67
>>> #8  0x281815a8 in io_add_file (fd=56, condition=IO_READ, 
>>> source_linenum=244, callback=0x2818a7d0 , context=0x0) at 
>>> ioloop.c:59
>>> #9  0x281813a6 in io_add (fd=56, condition=IO_READ, source_linenum=244, 
>>> callback=0x2818a7d0 , context=0x0) at ioloop.c:81
>>> #10 0x2818a666 in lib_signals_set_handler (signo=1, flags=3, 
>>> handler=0x804e6c0 , context=0x0) at lib-signals.c:243
>>> #11 0x0804e129 in main_init (set=0x2881d098) at main.c:518
>>> #12 0x0804d562 in main (argc=3, argv=0xae08) at main.c:890
>> Weird. I haven't touched anything even close to that. Also kqueue works on 
>> my OSX. The only thing that comes to my mind is 
>> https://github.com/dovecot/core/commit/fde7b8a03bf91cfa5bb7ca3e84545386243fa0d2
>>
>> Does it happen to work if you use the attached patch?
>>
> Still trying to learn git, but here is what happened when I tried applying 
> this diff.
>
> Sun Jul 03 10:12:32 ~/dovecot/core $ git reset --hard 
> 3fea4d5988de365503df44a9b067e3b181cac65c 
> HEAD is now at 3fea4d5 master: Stopping didn't close dead-pipes early enough.
> Sun Jul 03 10:12:37 ~/dovecot/core $ git apply diff.patch 
>  
> error: patch failed: src/master/service-monitor.c:522
> error: src/master/service-monitor.c: patch does not apply
> error: patch failed: src/master/service-monitor.c:452
> error: src/master/service-monitor.c: patch does not apply
> error: patch failed: src/master/service-process.c:133
> error: src/master/service-process.c: patch does not apply
> error: patch failed: src/master/service.c:283
> error: src/master/service.c: patch does not apply
> error: patch failed: src/master/service.h:85
> error: src/master/service.h: patch does not apply
>
> Same thing happened before the reset --hard.
>
I don't think Timo intended you to apply this as patch, but rather that
it's probably what's causing it.

Aki

Re: kqueue crash on FreeBSD with 2.2.25

[Edgar Pettijohn]

On 16-07-03 03:30:36, Timo Sirainen wrote:
> On 02 Jul 2016, at 03:30, Adam Weinberger  wrote:
> > 
> >>> Jul  1 10:07:27 imap dovecot: master: Panic: kevent(EV_ADD, READ, 54) 
> >>> failed: Bad file descriptor
> >>> 
> >>> It's not dumping core, and I get the message even with "protocols ="
> >>> 
> >>> Downgrading back to 2.2.24 fixes it. What info would be helpful for me to 
> >>> provide here?
> >> 
> >> gdb backtrace: http://dovecot.org/bugreport.html#coredumps
> >> 
> > 
> > Fuller logs attached. Thanks for your help, Timo.
> > 
> > #6  0x2815b23a in i_panic (format=0x281ccf7a "kevent(EV_ADD, READ, %d) 
> > failed: %m") at failures.c:275
> > #7  0x28185e10 in io_loop_handle_add (io=0x288843a0) at ioloop-kqueue.c:67
> > #8  0x281815a8 in io_add_file (fd=56, condition=IO_READ, 
> > source_linenum=244, callback=0x2818a7d0 , context=0x0) at 
> > ioloop.c:59
> > #9  0x281813a6 in io_add (fd=56, condition=IO_READ, source_linenum=244, 
> > callback=0x2818a7d0 , context=0x0) at ioloop.c:81
> > #10 0x2818a666 in lib_signals_set_handler (signo=1, flags=3, 
> > handler=0x804e6c0 , context=0x0) at lib-signals.c:243
> > #11 0x0804e129 in main_init (set=0x2881d098) at main.c:518
> > #12 0x0804d562 in main (argc=3, argv=0xae08) at main.c:890
> 
> Weird. I haven't touched anything even close to that. Also kqueue works on my 
> OSX. The only thing that comes to my mind is 
> https://github.com/dovecot/core/commit/fde7b8a03bf91cfa5bb7ca3e84545386243fa0d2
> 
> Does it happen to work if you use the attached patch?
> 

Still trying to learn git, but here is what happened when I tried applying this 
diff.

Sun Jul 03 10:12:32 ~/dovecot/core $ git reset --hard 
3fea4d5988de365503df44a9b067e3b181cac65c 
HEAD is now at 3fea4d5 master: Stopping didn't close dead-pipes early enough.
Sun Jul 03 10:12:37 ~/dovecot/core $ git apply diff.patch   
   
error: patch failed: src/master/service-monitor.c:522
error: src/master/service-monitor.c: patch does not apply
error: patch failed: src/master/service-monitor.c:452
error: src/master/service-monitor.c: patch does not apply
error: patch failed: src/master/service-process.c:133
error: src/master/service-process.c: patch does not apply
error: patch failed: src/master/service.c:283
error: src/master/service.c: patch does not apply
error: patch failed: src/master/service.h:85
error: src/master/service.h: patch does not apply

Same thing happened before the reset --hard.

-- 
Edgar Pettijohn

Re: kqueue crash on FreeBSD with 2.2.25

[Edgar Pettijohn]

On 16-07-03 03:30:36, Timo Sirainen wrote:
> On 02 Jul 2016, at 03:30, Adam Weinberger  wrote:
> > 
> >>> Jul  1 10:07:27 imap dovecot: master: Panic: kevent(EV_ADD, READ, 54) 
> >>> failed: Bad file descriptor
> >>> 
> >>> It's not dumping core, and I get the message even with "protocols ="
> >>> 
> >>> Downgrading back to 2.2.24 fixes it. What info would be helpful for me to 
> >>> provide here?
> >> 
> >> gdb backtrace: http://dovecot.org/bugreport.html#coredumps
> >> 
> > 
> > Fuller logs attached. Thanks for your help, Timo.
> > 
> > #6  0x2815b23a in i_panic (format=0x281ccf7a "kevent(EV_ADD, READ, %d) 
> > failed: %m") at failures.c:275
> > #7  0x28185e10 in io_loop_handle_add (io=0x288843a0) at ioloop-kqueue.c:67
> > #8  0x281815a8 in io_add_file (fd=56, condition=IO_READ, 
> > source_linenum=244, callback=0x2818a7d0 , context=0x0) at 
> > ioloop.c:59
> > #9  0x281813a6 in io_add (fd=56, condition=IO_READ, source_linenum=244, 
> > callback=0x2818a7d0 , context=0x0) at ioloop.c:81
> > #10 0x2818a666 in lib_signals_set_handler (signo=1, flags=3, 
> > handler=0x804e6c0 , context=0x0) at lib-signals.c:243
> > #11 0x0804e129 in main_init (set=0x2881d098) at main.c:518
> > #12 0x0804d562 in main (argc=3, argv=0xae08) at main.c:890
> 
> Weird. I haven't touched anything even close to that. Also kqueue works on my 
> OSX. The only thing that comes to my mind is 
> https://github.com/dovecot/core/commit/fde7b8a03bf91cfa5bb7ca3e84545386243fa0d2
> 
> Does it happen to work if you use the attached patch?
> 
The patch doesn't apply cleanly for me on OpenBSD -current.

Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--
|commit 3fea4d5988de365503df44a9b067e3b181cac65c
|Author: Timo Sirainen 
|Date:   Thu Jun 30 14:08:24 2016 +0300
|
|master: Stopping didn't close dead-pipes early enough.
|
|This caused stopping to be too slow. Broken by 0153cf542.
|
|diff --git a/src/master/service-monitor.c b/src/master/service-monitor.c
|index 19655c2..44cdb26 100644
|--- a/src/master/service-monitor.c
|+++ b/src/master/service-monitor.c
--
Patching file service-monitor.c using Plan A...
Hunk #1 succeeded at 513 (offset 8 lines).
Hunk #2 failed at 538.
Hunk #3 succeeded at 595 with fuzz 2 (offset 8 lines).
1 out of 3 hunks failed--saving rejects to service-monitor.c.rej
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--
|commit fde7b8a03bf91cfa5bb7ca3e84545386243fa0d2
|Author: Timo Sirainen 
|Date:   Tue Jun 28 23:38:11 2016 +0300
|
|master: Added support for stopping specific services.
|
|We need to have a per-service fd for detecting a dead master.
|
|diff --git a/src/master/service-monitor.c b/src/master/service-monitor.c
|index bf4e931..fb4f64f 100644
|--- a/src/master/service-monitor.c
|+++ b/src/master/service-monitor.c
--
Patching file service-monitor.c using Plan A...
Reversed (or previously applied) patch detected!  Assume -R? [y]

If I select [y] and continue to build I get lots of build errors.


-- 
Edgar Pettijohn

Re: kqueue crash on FreeBSD with 2.2.25 and OpenBSD

[Edgar Pettijohn]

On 16-07-03 03:30:36, Timo Sirainen wrote:
> On 02 Jul 2016, at 03:30, Adam Weinberger  wrote:
> > 
> >>> Jul  1 10:07:27 imap dovecot: master: Panic: kevent(EV_ADD, READ, 54) 
> >>> failed: Bad file descriptor
> >>> 
> >>> It's not dumping core, and I get the message even with "protocols ="
> >>> 
> >>> Downgrading back to 2.2.24 fixes it. What info would be helpful for me to 
> >>> provide here?
> >> 
> >> gdb backtrace: http://dovecot.org/bugreport.html#coredumps
> >> 
> > 
> > Fuller logs attached. Thanks for your help, Timo.
> > 
> > #6  0x2815b23a in i_panic (format=0x281ccf7a "kevent(EV_ADD, READ, %d) 
> > failed: %m") at failures.c:275
> > #7  0x28185e10 in io_loop_handle_add (io=0x288843a0) at ioloop-kqueue.c:67
> > #8  0x281815a8 in io_add_file (fd=56, condition=IO_READ, 
> > source_linenum=244, callback=0x2818a7d0 , context=0x0) at 
> > ioloop.c:59
> > #9  0x281813a6 in io_add (fd=56, condition=IO_READ, source_linenum=244, 
> > callback=0x2818a7d0 , context=0x0) at ioloop.c:81
> > #10 0x2818a666 in lib_signals_set_handler (signo=1, flags=3, 
> > handler=0x804e6c0 , context=0x0) at lib-signals.c:243
> > #11 0x0804e129 in main_init (set=0x2881d098) at main.c:518
> > #12 0x0804d562 in main (argc=3, argv=0xae08) at main.c:890
> 
> Weird. I haven't touched anything even close to that. Also kqueue works on my 
> OSX. The only thing that comes to my mind is 
> https://github.com/dovecot/core/commit/fde7b8a03bf91cfa5bb7ca3e84545386243fa0d2
> 
> Does it happen to work if you use the attached patch?
> 

Looks like its an issue on OpenBSD -current as well.

This GDB was configured as "i386-unknown-openbsd6.0"...
Core was generated by `dovecot'.
Program terminated with signal 6, Aborted.
Loaded symbols for /home/edgar/sbin/dovecot
Reading symbols from /home/edgar/lib/dovecot/libdovecot.so.0.0...done.
Loaded symbols for /home/edgar/lib/dovecot/libdovecot.so.0.0
Reading symbols from /usr/lib/libc.so.88.0...done.
Loaded symbols for /usr/lib/libc.so.88.0
Reading symbols from /usr/libexec/ld.so...done.
Loaded symbols for /usr/libexec/ld.so
#0  0x0d8ca24f in thrkill () at :2
2   : No such file or directory.
in 
(gdb) bt
#0  0x0d8ca24f in thrkill () at :2
#1  0x0d8cd691 in *_libc_raise (s=6) at /usr/src/lib/libc/gen/raise.c:37
#2  0x0d8cb8fc in *_libc_abort () at /usr/src/lib/libc/stdlib/abort.c:52
#3  0x092d5a2f in default_fatal_finish (type=Variable "type" is not available.
) at failures.c:201
#4  0x092d5ae4 in i_syslog_fatal_handler (ctx=0xcf7dcdcc, 
format=0x2925f1d4 "kevent(EV_ADD, READ, %d) failed: %m", args=0xcf7dcdf4 
"<")
at failures.c:418
#5  0x17bd6f68 in master_fatal_callback (ctx=0xcf7dcdcc, 
format=0x2925f1d4 "kevent(EV_ADD, READ, %d) failed: %m", args=0xcf7dcdf4 
"<")
at main.c:167
#6  0x092d4ea6 in i_panic (format=Could not find the frame base for "i_panic".
) at failures.c:275
#7  0x092de2b9 in io_loop_handle_add (io=Variable "io" is not available.
) at ioloop-kqueue.c:67
#8  0x092df3e2 in io_add_file (fd=60, condition=IO_READ, source_linenum=244, 
callback=0x92efe80 , context=0x0) at ioloop.c:59
#9  0x092df491 in io_add (fd=60, condition=IO_READ, source_linenum=244, 
callback=0x92efe80 , context=0x0) at ioloop.c:81
#10 0x092f0283 in lib_signals_set_handler (signo=1, flags=3, 
handler=0x17bd5d30 , context=0x0) at lib-signals.c:243
#11 0x17bd58fb in main_init (set=0x86b34098) at main.c:518
#12 0x17bd6878 in main (argc=Cannot access memory at address 0x0
) at main.c:890
Current language:  auto; currently asm
(gdb) bt full
#0  0x0d8ca24f in thrkill () at :2
No locals.
#1  0x0d8cd691 in *_libc_raise (s=6) at /usr/src/lib/libc/gen/raise.c:37
No locals.
#2  0x0d8cb8fc in *_libc_abort () at /usr/src/lib/libc/stdlib/abort.c:52
mask = 4294967263
sa = {__sigaction_u = {__sa_handler = 0xcf7dcd38, __sa_sigaction = 
0xcf7dcd38}, 
  sa_mask = 690456752, sa_flags = 1}
#3  0x092d5a2f in default_fatal_finish (type=Variable "type" is not available.
) at failures.c:201
backtrace = Variable "backtrace" is not available.
(gdb)

I'm happy to test patches, etc.
-- 
Edgar Pettijohn

Re: kqueue crash on FreeBSD with 2.2.25

[Timo Sirainen]

On 02 Jul 2016, at 03:30, Adam Weinberger  wrote:
> 
>>> Jul  1 10:07:27 imap dovecot: master: Panic: kevent(EV_ADD, READ, 54) 
>>> failed: Bad file descriptor
>>> 
>>> It's not dumping core, and I get the message even with "protocols ="
>>> 
>>> Downgrading back to 2.2.24 fixes it. What info would be helpful for me to 
>>> provide here?
>> 
>> gdb backtrace: http://dovecot.org/bugreport.html#coredumps
>> 
> 
> Fuller logs attached. Thanks for your help, Timo.
> 
> #6  0x2815b23a in i_panic (format=0x281ccf7a "kevent(EV_ADD, READ, %d) 
> failed: %m") at failures.c:275
> #7  0x28185e10 in io_loop_handle_add (io=0x288843a0) at ioloop-kqueue.c:67
> #8  0x281815a8 in io_add_file (fd=56, condition=IO_READ, source_linenum=244, 
> callback=0x2818a7d0 , context=0x0) at ioloop.c:59
> #9  0x281813a6 in io_add (fd=56, condition=IO_READ, source_linenum=244, 
> callback=0x2818a7d0 , context=0x0) at ioloop.c:81
> #10 0x2818a666 in lib_signals_set_handler (signo=1, flags=3, 
> handler=0x804e6c0 , context=0x0) at lib-signals.c:243
> #11 0x0804e129 in main_init (set=0x2881d098) at main.c:518
> #12 0x0804d562 in main (argc=3, argv=0xae08) at main.c:890

Weird. I haven't touched anything even close to that. Also kqueue works on my 
OSX. The only thing that comes to my mind is 
https://github.com/dovecot/core/commit/fde7b8a03bf91cfa5bb7ca3e84545386243fa0d2

Does it happen to work if you use the attached patch?



diff
Description: Binary data

Re: kqueue crash on FreeBSD with 2.2.25

[Adam Weinberger]

> On 1 Jul, 2016, at 18:30, Adam Weinberger  wrote:
> 
>> On 1 Jul, 2016, at 10:52, Timo Sirainen  wrote:
>> 
>> On 01 Jul 2016, at 19:39, Adam Weinberger  wrote:
>>> 
>>> Hi,
>>> 
>>> 2.2.25 crashes on FreeBSD with a kqueue-related message. I see references 
>>> to something similar 
>>> (http://www.dovecot.org/list/dovecot/2012-February.txt) from a couple years 
>>> ago.
>>> 
>>> I get:
>>> Jul  1 10:07:27 imap dovecot: master: Panic: kevent(EV_ADD, READ, 54) 
>>> failed: Bad file descriptor
>>> 
>>> It's not dumping core, and I get the message even with "protocols ="
>>> 
>>> Downgrading back to 2.2.24 fixes it. What info would be helpful for me to 
>>> provide here?
>> 
>> gdb backtrace: http://dovecot.org/bugreport.html#coredumps
>> 
> 
> Fuller logs attached. Thanks for your help, Timo.
> 
> # Adam
> 
> 
> Okay. Here's my steps:
> 1) Install 2.2.5 into fresh i386 FreeBSD 10.3-RELEASE-p5 jail.
> 
> 2) Built with the following settings:
> root@apnoea-builder:/usr/ports/mail/dovecot2 # make -V CONFIGURE_ARGS
> --localstatedir=/var  --with-statedir=/var/db/dovecot  --without-shadow  
> --with-docs --with-ioloop=kqueue --with-notify=kqueue --without-libwrap 
> --with-ssl=openssl --without-vpopmail --without-gssapi --without-cdb 
> --without-ldap --without-mysql --without-pgsql --without-sqlite --without-icu 
> --without-lucene --without-solr --without-textcat --prefix=/usr/local 
> ${_LATE_CONFIGURE_ARGS}


Just a follow-up: it runs without dumping core if I build with 
"--with-ioloop=poll --with-notify=none".

# Adam


-- 
Adam Weinberger
ad...@adamw.org
http://www.adamw.org

Re: kqueue crash on FreeBSD with 2.2.25

[Adam Weinberger]

> On 1 Jul, 2016, at 10:52, Timo Sirainen  wrote:
> 
> On 01 Jul 2016, at 19:39, Adam Weinberger  wrote:
>> 
>> Hi,
>> 
>> 2.2.25 crashes on FreeBSD with a kqueue-related message. I see references to 
>> something similar (http://www.dovecot.org/list/dovecot/2012-February.txt) 
>> from a couple years ago.
>> 
>> I get:
>> Jul  1 10:07:27 imap dovecot: master: Panic: kevent(EV_ADD, READ, 54) 
>> failed: Bad file descriptor
>> 
>> It's not dumping core, and I get the message even with "protocols ="
>> 
>> Downgrading back to 2.2.24 fixes it. What info would be helpful for me to 
>> provide here?
> 
> gdb backtrace: http://dovecot.org/bugreport.html#coredumps
> 

Fuller logs attached. Thanks for your help, Timo.

# Adam


Okay. Here's my steps:
1) Install 2.2.5 into fresh i386 FreeBSD 10.3-RELEASE-p5 jail.

2) Built with the following settings:
root@apnoea-builder:/usr/ports/mail/dovecot2 # make -V CONFIGURE_ARGS
--localstatedir=/var  --with-statedir=/var/db/dovecot  --without-shadow  
--with-docs --with-ioloop=kqueue --with-notify=kqueue --without-libwrap 
--with-ssl=openssl --without-vpopmail --without-gssapi --without-cdb 
--without-ldap --without-mysql --without-pgsql --without-sqlite --without-icu 
--without-lucene --without-solr --without-textcat --prefix=/usr/local 
${_LATE_CONFIGURE_ARGS}

3) Copied files into place and made following changes:
root@apnoea-builder:/usr/ports/mail/dovecot2 # dovecot -n
# 2.2.25 (7be1766): /usr/local/etc/dovecot/dovecot.conf
# OS: FreeBSD 10.3-RELEASE-p5 i386
auth_debug = yes
auth_verbose = yes
log_path = /var/log/dovelog
mail_debug = yes
namespace inbox {
  inbox = yes
  location =
  mailbox Drafts {
special_use = \Drafts
  }
  mailbox Junk {
special_use = \Junk
  }
  mailbox Sent {
special_use = \Sent
  }
  mailbox "Sent Messages" {
special_use = \Sent
  }
  mailbox Trash {
special_use = \Trash
  }
  prefix =
}
passdb {
  driver = pam
}
ssl = no
userdb {
  driver = passwd
}


4. Started dovecot
root@apnoea-builder:/usr/ports/mail/dovecot2 # /usr/local/sbin/dovecot -c 
/usr/local/etc/dovecot/dovecot.conf
Last died with error (see error log for more information): kevent(EV_ADD, READ, 
57) failed: Bad file descriptor

root@apnoea-builder:~ # tail /var/log/dovelog
Jul 02 00:15:56 master: Info: Dovecot v2.2.25 (7be1766) starting up for imap, 
pop3, lmtp
Jul 02 00:15:56 master: Panic: kevent(EV_ADD, READ, 57) failed: Bad file 
descriptor


5. Backtrace
root@apnoea-builder:~ # gdb /usr/local/sbin/dovecot /dovecot.core
This GDB was configured as "i386-marcel-freebsd"...
Core was generated by `dovecot'.
Program terminated with signal 6, Aborted.
Reading symbols from /usr/local/lib/dovecot/libdovecot.so.0...done.
Loaded symbols for /usr/local/lib/dovecot/libdovecot.so.0
Reading symbols from /lib/libc.so.7...done.
Loaded symbols for /lib/libc.so.7
Reading symbols from /libexec/ld-elf.so.1...done.
Loaded symbols for /libexec/ld-elf.so.1
#0  0x28295237 in thr_kill () from /lib/libc.so.7
(gdb) bt
#0  0x28295237 in thr_kill () from /lib/libc.so.7
#1  0x2829522a in raise () from /lib/libc.so.7
#2  0x28295176 in abort () from /lib/libc.so.7
#3  0x2815aea2 in default_fatal_finish (type=LOG_TYPE_PANIC, status=0) at 
failures.c:201
#4  0x2815b686 in i_syslog_fatal_handler (ctx=0xaaf0, format=0x281ccf7a 
"kevent(EV_ADD, READ, %d) failed: %m", args=0xab24 "8") at failures.c:418
#5  0x0804dfd1 in master_fatal_callback (ctx=0xaaf0, format=0x281ccf7a 
"kevent(EV_ADD, READ, %d) failed: %m", args=0xab24 "8") at main.c:167
#6  0x2815b23a in i_panic (format=0x281ccf7a "kevent(EV_ADD, READ, %d) failed: 
%m") at failures.c:275
#7  0x28185e10 in io_loop_handle_add (io=0x288843a0) at ioloop-kqueue.c:67
#8  0x281815a8 in io_add_file (fd=56, condition=IO_READ, source_linenum=244, 
callback=0x2818a7d0 , context=0x0) at ioloop.c:59
#9  0x281813a6 in io_add (fd=56, condition=IO_READ, source_linenum=244, 
callback=0x2818a7d0 , context=0x0) at ioloop.c:81
#10 0x2818a666 in lib_signals_set_handler (signo=1, flags=3, handler=0x804e6c0 
, context=0x0) at lib-signals.c:243
#11 0x0804e129 in main_init (set=0x2881d098) at main.c:518
#12 0x0804d562 in main (argc=3, argv=0xae08) at main.c:890


(gdb) bt full
#0  0x28295237 in thr_kill () from /lib/libc.so.7
No symbol table info available.
#1  0x2829522a in raise () from /lib/libc.so.7
No symbol table info available.
#2  0x28295176 in abort () from /lib/libc.so.7
No symbol table info available.
#3  0x2815aea2 in default_fatal_finish (type=LOG_TYPE_PANIC, status=0) at 
failures.c:201
backtrace = 0x0
#4  0x2815b686 in i_syslog_fatal_handler (ctx=0xaaf0, format=0x281ccf7a 
"kevent(EV_ADD, READ, %d) failed: %m", args=0xab24 "8") at failures.c:418
status = 0
#5  0x0804dfd1 in master_fatal_callback (ctx=0xaaf0, format=0x281ccf7a 
"kevent(EV_ADD, READ, %d) failed: %m", args=0xab24 "8") at main.c:167
path = 0x28803810 "master-fatal.lastlog"
str = 0x28803860 

Re: kqueue crash on FreeBSD with 2.2.25

[Timo Sirainen]

On 01 Jul 2016, at 19:39, Adam Weinberger  wrote:
> 
> Hi,
> 
> 2.2.25 crashes on FreeBSD with a kqueue-related message. I see references to 
> something similar (http://www.dovecot.org/list/dovecot/2012-February.txt) 
> from a couple years ago.
> 
> I get:
> Jul  1 10:07:27 imap dovecot: master: Panic: kevent(EV_ADD, READ, 54) failed: 
> Bad file descriptor
> 
> It's not dumping core, and I get the message even with "protocols ="
> 
> Downgrading back to 2.2.24 fixes it. What info would be helpful for me to 
> provide here?

gdb backtrace: http://dovecot.org/bugreport.html#coredumps

kqueue crash on FreeBSD with 2.2.25

[Adam Weinberger]

Hi,

2.2.25 crashes on FreeBSD with a kqueue-related message. I see references to 
something similar (http://www.dovecot.org/list/dovecot/2012-February.txt) from 
a couple years ago.

I get:
Jul  1 10:07:27 imap dovecot: master: Panic: kevent(EV_ADD, READ, 54) failed: 
Bad file descriptor

It's not dumping core, and I get the message even with "protocols ="

Downgrading back to 2.2.24 fixes it. What info would be helpful for me to 
provide here?

# Adam


-- 
Adam Weinberger
ad...@adamw.org
http://www.adamw.org