Re: procfs crashing on shudown/reboot

[João Pedro Malhado]

On Fri, Apr 16, 2021 at 01:50:49PM +0200, Samuel Thibault wrote:
> That will build a procfs.static that you can settrans -a by hand.

Had to use settrans -fga to displace the original running translator.
Below is the backtrace of the core file.

Regards,
João

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Reading symbols from procfs.static...

warning: core file may not match specified executable file.
[New process 689]
[New process 1]
[New process 2]
[New process 3]

warning: Unexpected size of section `.reg2/689' in core file.
Core was generated by `/root/procfs.static --compatible'.
Program terminated with signal SIGABRT, Aborted.

warning: Unexpected size of section `.reg2/689' in core file.
#0  0x080b91ec in mach_msg_trap ()
[Current thread is 1 (process 689)]

Thread 4 (process 3):
warning: Unexpected size of section `.reg2/3' in core file.
#0  0x080b91ec in mach_msg_trap ()
No symbol table info available.
#1  0x08071046 in mach_msg ()
No symbol table info available.
#2  0x08071399 in mach_msg_server_timeout ()
No symbol table info available.
#3  0x08068592 in thread_function (arg=0x0) at 
../../libports/manage-multithread.c:259
thread = {color = 1}
master = 
timeout = 12
err = 
startover = 
#4  0x0806c69f in entry_point (self=, start_routine=, arg=) at pt-create.c:62
No locals.
#5  0x in ?? ()
No symbol table info available.

Thread 3 (process 2):
warning: Unexpected size of section `.reg2/2' in core file.
#0  0x080b91ec in mach_msg_trap ()
No symbol table info available.
#1  0x08071046 in mach_msg ()
No symbol table info available.
#2  0x08118a2c in msg_sig_post ()
No symbol table info available.
#3  0x080d495c in kill_pid ()
No symbol table info available.
#4  0x080d4c86 in kill ()
No symbol table info available.
#5  0x080d3fda in raise ()
No symbol table info available.
#6  0x080482c8 in abort ()
No symbol table info available.
#7  0x08048170 in __assert_fail_base_backtrace (fmt=0x81301a0 "%s: %s:%u: %s: 
Assertion '%s' failed.\n", assertion=0x812f290 "! (r.hard == 1 && r.weak == 0) 
|| !\"refcount detected use-after-free!\"", file=0x812f22c 
"../../libshouldbeinlibc/refcount.h", line=170, function=0x812f3a8 
<__PRETTY_FUNCTION__.3> "refcounts_ref") at 
../../libshouldbeinlibc/assert-backtrace.c:57
size = 128
skip = 2
nptrs = 16
buffer = 0x2811990
#8  0x0806c53d in __assert_fail_backtrace (assertion=0x812f290 "! (r.hard == 1 
&& r.weak == 0) || !\"refcount detected use-after-free!\"", file=0x812f22c 
"../../libshouldbeinlibc/refcount.h", line=170, function=0x812f3a8 
<__PRETTY_FUNCTION__.3> "refcounts_ref") at 
../../libshouldbeinlibc/assert-backtrace.c:64
No locals.
#9  0x0804e69e in refcounts_ref (result=0x0, ref=0x10002c70) at 
../../libshouldbeinlibc/refcount.h:170
r = {hard = , weak = }
r = {hard = , weak = }
__PRETTY_FUNCTION__ = "refcounts_ref"
#10 netfs_nref (np=0x10002bc0) at ../../libnetfs/nref.c:26
No locals.
#11 0x0804b514 in rootdir_make_translated_node (dir_hook=0x100016d0, 
entry_hook=0x8190180 <__compound_literal.8>) at ../../procfs/rootdir.c:674
ops = 0x8190180 <__compound_literal.8>
np = 0x10002bc0
prev = 
#12 0x08049803 in procfs_dir_lookup (hook=0x10001950, name=0x2811efc "mounts", 
np=0x2811d98) at ../../procfs/procfs_dir.c:88
dir = 0x10001950
ent = 0x812eb40 
#13 0x08048f30 in procfs_lookup (np=0x10001980, name=0x2811efc "mounts", 
npp=0x2811d98) at ../../procfs/procfs.c:185
err = 
#14 0x0804b605 in dircat_lookup (hook=0x10001a90, name=0x2811efc "mounts", 
np=0x2811d98) at ../../procfs/dircat.c:76
dcn = 0x10001a90
err = 
i = 1
#15 0x08048f30 in procfs_lookup (np=0x10001ac0, name=0x2811efc "mounts", 
npp=0x2811d98) at ../../procfs/procfs.c:185
err = 
#16 0x0804948f in netfs_attempt_lookup (user=0x102170, dir=0x10001ac0, 
name=0x2811efc "mounts", np=0x2811d98) at ../../procfs/netfs.c:212
err = 
#17 0x0805906a in netfs_S_dir_lookup (dircred=, 
filename=0x2811efc "mounts", flags=, mode=, 
do_retry=, retry_name=, retry_port=, retry_port_type=) at ../../libnetfs/dir-lookup.c:175
create = 
excl = 
mustbedir = 
lastcomp = 
newnode = 
nsymlinks = 
dnp = 0x10001ac0

Re: procfs crashing on shudown/reboot

[Diego Corrales]

Hello my friend how are you? I want to help, but I don't have much
knowledge of programming and English, I want to help and to be helped to
learn. I am studying algorithmic programming, and English in openenglish. I
want to help make GNU / Hurd the best operating system in the world.

El vie., 16 abr. 2021 08:51, Samuel Thibault 
escribió:

> João Pedro Malhado, le ven. 16 avril 2021 12:42:36 +0200, a ecrit:
> > How I need to compile a statically linked version to provide a backtrace?
>
> You can build the hurd package with dpkg-buildpackage, and once built,
>
> cd build-deb/procfs
> make procfs.static
>
> That will build a procfs.static that you can settrans -a by hand.
>
> Samuel
>
>

Re: procfs crashing on shudown/reboot

[Diego Corrales]

Hello my friend how are you?  I want to help, but I don't have much
knowledge of programming and English, I want to help and to be helped to
learn.  I am studying algorithmic programming, and English in openenglish.
I want to help make GNU / Hurd the best operating system in the world.

El vie., 16 abr. 2021 08:51, Samuel Thibault 
escribió:

> João Pedro Malhado, le ven. 16 avril 2021 12:42:36 +0200, a ecrit:
> > How I need to compile a statically linked version to provide a backtrace?
>
> You can build the hurd package with dpkg-buildpackage, and once built,
>
> cd build-deb/procfs
> make procfs.static
>
> That will build a procfs.static that you can settrans -a by hand.
>
> Samuel
>
>