On 03/23/2020 01:39 PM, Metztli Information Technology wrote:
On Wed, Mar 11, 2020 at 3:09 PM Edward Shishkin <edward.shishkin@xxxxxxxxx> wrote:
On 03/10/2020 11:24 PM, Edward Shishkin wrote:
On 03/10/2020 09:25 PM, Edward Shishkin wrote:
On 03/10/2020 06:36 AM, Metztli Information Technology wrote:
Niltze, Ed-
I am experiencing segfault when using dpkg (package manager for
debian) utility to unpack software.
It happens *both* during reiser4 sfrn 5.1.3 -enabled Debian Installer
(d-i) *and* in a pure sfrn 5.1.3 Debian Buster environment,
i.e., formatted in sfrn 5.1.3 and running reiser4progs 2.0.0 and
corresponding kernel. It happens in VirtualBox 6.1.4
Do you have any bootable image I could download and reproduce that
oops on my virtual machine?
Ah, I see a mistake, which most likely causes that oops.
Will provide a fixup soon..
Please, apply the attached patch (from the directory ./fs/reiser4)
Applied your patch, ed, and the reiser4 SFRN 5.1.3 native installation proceeds a little further --until after the kernel is selected-- the locales package fails.
Here is a little background. The Debian Installer (d-i) utilizes Busybox utilities --especifically unxz-- once the 'Install base system' option starts.
Notwithstanding, for whatever reason unxz fails with:
...
unxz: compressed data not read from terminal, use -f to force it
usage: /usr/lib/debootstrap/pkgdetails PKGS mirror packagesfile pkgs..
or: /usr/lib/debootstrap/pkgdetails FIELD field mirror packagesfile pkgs..
or: /usr/lib/debootstrap/pkgdetails GETDEPS packagesfile pkgs..
or: /usr/lib/debootstrap/pkgdetails STANZAS packagesfile pkgs..
or: /usr/lib/debootstrap/pkgdetails WGET% low high end reason
mknod: /target/dev/null: No such file or directory
I tried a couple (at least) of methods to bypass the issue.
I located /usr/share/debootstrap/functions and modified Busybox command invocation as: unxz -f
Additionally, I built another Busybox hack which included the full unxz command along with the proper *.so library support built from bleeding edge git source.
< https://github.com/xz-mirror/xz >
Fact is non-busybox unxz command does not require -f switch to continue the installation onto reiser4 SFRN5 formatted media:
< https://metztli.it/buster-reiser5/reg42/metztli-reiser4-sfrn5.iso >
< https://metztli.it/buster-reiser5/reg42/metztli-reiser4-sfrn5.iso.SHA256SUM >
At this point is when the patch that you provided proved its worth --as the segfault was not experienced any longer and the installation continued.
Notwithstanding, after selecting the kernel to be installed, for which the locales package is a requirement, the installer Python 'thinks' --like busybox unxz before--
that it is running in a terminal:
sed: couldn't edit /etc/locale.gen: is a terminal
Thinking that a newer Python3 version 3.8.2 might make a difference, I hacked a Debian UDEB component so as to provide Python3 3.8.2 support into
the environment. Nevertheless, the issue persists, the Debian Installer continues to 'think' it is running in a terminal (read only? ) and not being installed
into reiser4 SFRN5 formatted filesystem ( isatty() issues?)
We can verify we are running non-busybox unxz utility:
unxz --version
and latest Python3 support:
python3 --version
Hm.. I am not able to identify the problem only by that input..
Please be aware, sir, that even in a VirtualBox 6.1.4 virtual machine converted from reiser4 SFRN 4.0.2 to SFRN 5.1.3 by the cp -a back-and-forth method
and subsequent fine tuning, i.e., /etc/fstab modification, /boot/grub/grub.cfg, reiser4progs 2.0.0 proper installation, etc.,
existing Python3 7.x.y from Debian repositories is used by the Debian package manager to install and upgrade software packages.
Accordingly, that older Python3 version fails to detect that it is operating on a file system and, like the installer, 'thinks' it is in a terminal.
Evidently, most software installation/upgrade operations fail with a python prompt:
Finally, I have hacked a couple of newer Debian package utilities with newer Python3 3.8.2 in an attempt to observe if something changes without any luck.
apt_2.0.0+nmu1_amd64.deb
apt-utils_2.0.0+nmu1_amd64.deb
libapt-pkg6.0_2.0.0+nmu1_amd64.deb
python3-apt_1.9.10+nmu1_amd64.deb
python-apt_1.9.10+nmu1_amd64.deb
python-apt-common_1.9.10+nmu1_all.deb
In summary, a new busybox 1.31.1 unxz utility and Python3 7.x.y / 3.8.2 cannot detect the underlying reiser5 file system where they are to operate.
I am able to replace unxz to advance the installation but I cannot make Python3 to recognize the reiser5 filesystem
There is no "reiser5 file system". At least, I didn't rename it.
"reiser5" stands for "reiser4 kernel module of SFRN 5.X.Y".
Thanks,
Edward.
on which it is to operate --as
it erroneously 'believes' it is running in a terminal.
By the way, the current Debian Installer (d-i) netboot framework for *both* reiser4 SFRN 4.0.2 and referenced SFRN 5.1.3 is very similar for the Linux 5.5.8 version.
Yet the installer has no issues detecting a reiser4 4.0.2 -formatted media whereas unxz and python3 in reiser4 5.1.3 fail and possibly detect it as a terminal.
Thanks,
Edward.
 as well as in actual
physical hardware, same BUG line.
This BUG makes it impossible to carry out a native Debian Buster
installation onto a default reiser4 SFRN 5.1.3 -formatted
partition, i.e., reg42, with or without specifying a stripe, i.e., -t
256K. Accordingly, even if a user uses cp -a back-and-forth
to hack a pure SFRN5 Debian system whenever a software upgrade occurs
a segmentation fault will follow.
Unaware if other package managers, like RPM/YUM utilities, etc., will
cause a segfault as well.
Mar  8 20:20:19 debootstrap: Selecting previously unselected package
base-passwd.
Mar  8 20:20:19 debootstrap: (Reading database ... 0 files and
directories currently installed.)
Mar  8 20:20:19 debootstrap: Preparing to unpack
.../base-passwd_3.5.46_amd64.deb ...
Mar  8 20:20:19 debootstrap: Segmentation fault
Mar  8 20:20:19 kernel: [  794.378009] ------------[ cut here
]------------
Mar  8 20:20:19 kernel: [  794.378017] kernel BUG at
fs/reiser4/plugin/item/extent_stripe_ops.c:466!
Mar  8 20:20:19 kernel: [  794.378031] invalid opcode: 0000 [#1] SMP PTI
Mar  8 20:20:19 kernel: [  794.378044] CPU: 6 PID: 18587 Comm: dpkg
Tainted: G Â Â Â Â Â Â E Â Â 5.5.0-1+reiser4-5.1.3-amd64 #1 Debian
5.5.7-1+reiser4~5.1.3
Mar  8 20:20:19 kernel: [  794.378048] Hardware name: Hewlett-Packard
HP Pavilion dv6 Notebook PC/17FC, BIOS F.1C 01/23/2013
Mar  8 20:20:19 kernel: [  794.378103] RIP:
0010:find_or_create_extent_stripe+0x169/0x1d0 [reiser4]
Mar  8 20:20:19 kernel: [  794.378110] Code: 48 89 58 50 eb b3 4c 89
ef e8 43 40 fd ff eb 85 4c 89 e7 41 89 de e8 a6 2a d4 ee eb a2 4c 89
e7 e8 bc 3e d4 ee e9 11 ff ff ff <0f> 0b 48 89 df e8 bd 42 fb ff eb
89 e8 26 1e be ee f0 ff 4b 0c 74
Mar  8 20:20:19 kernel: [  794.378114] RSP: 0018:ffff9f90cd873c30
EFLAGS: 00010246
Mar  8 20:20:19 kernel: [  794.378120] RAX: 0000000000000000 RBX:
ffff8ab298d12240 RCX: 0000000000000000
Mar  8 20:20:19 kernel: [  794.378123] RDX: 0000000000000000 RSI:
ffff8ab2a5b366f8 RDI: ffff8ab2a5b36600
Mar  8 20:20:19 kernel: [  794.378127] RBP: ffff9f90cd873d20 R08:
0000000000000001 R09: 000000000000000c
Mar  8 20:20:19 kernel: [  794.378130] R10: 0000000000000024 R11:
ffff8ab29f350a82 R12: ffffd75c5061c1c0
Mar  8 20:20:19 kernel: [  794.378134] R13: ffff8ab298d8a418 R14:
0000000000000000 R15: ffff8ab2b2905800
Mar  8 20:20:19 kernel: [  794.378139] FS:  00007fc29b9f4380(0000)
GS:ffff8ab2bfb80000(0000) knlGS:0000000000000000
Mar  8 20:20:19 kernel: [  794.378143] CS:  0010 DS: 0000 ES: 0000
CR0: 0000000080050033
Mar  8 20:20:19 kernel: [  794.378147] CR2: 00005616aa3b0a81 CR3:
00000004187d4002 CR4: 00000000000606e0
Mar  8 20:20:19 kernel: [  794.378150] Call Trace:
Mar  8 20:20:19 kernel: [  794.378211]  ? shorten_stripe+0x39b/0x4d0
[reiser4]
Mar  8 20:20:19 kernel: [  794.378221]  ? _cond_resched+0x15/0x30
Mar  8 20:20:19 kernel: [  794.378266]  shorten_stripe+0x39b/0x4d0
[reiser4]
Mar  8 20:20:19 kernel: [  794.378317]
reiser4_setattr_generic+0x150/0x200 [reiser4]
Mar  8 20:20:19 kernel: [  794.378362]  ? shorten_stripe+0x4d0/0x4d0
[reiser4]
Mar  8 20:20:19 kernel: [  794.378371]  notify_change+0x339/0x4a0
Mar  8 20:20:19 kernel: [  794.378378]  do_truncate+0x74/0xc0
Mar  8 20:20:19 kernel: [  794.378386]  do_sys_ftruncate+0x130/0x180
Mar  8 20:20:19 kernel: [  794.378395]  do_syscall_64+0x52/0x170
Mar  8 20:20:19 kernel: [  794.378401]
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Mar  8 20:20:19 kernel: [  794.378406] RIP: 0033:0x7fc29bb81947
Mar  8 20:20:19 kernel: [  794.378412] Code: 77 01 c3 48 8b 15 49 85
0c 00 f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00
0f 1f 40 00 b8 4d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b
15 19 85 0c 00 f7 d8 64 89 02 b8
Mar  8 20:20:19 kernel: [  794.378416] RSP: 002b:00007fff8148a888
EFLAGS: 00000206 ORIG_RAX: 000000000000004d
Mar  8 20:20:19 kernel: [  794.378421] RAX: ffffffffffffffda RBX:
00005616aa3ad4f0 RCX: 00007fc29bb81947
Mar  8 20:20:19 kernel: [  794.378425] RDX: 0000000000000000 RSI:
0000000000000098 RDI: 0000000000000009
Mar  8 20:20:19 kernel: [  794.378428] RBP: 00005616aa3ac260 R08:
00005616aa3ac340 R09: 00007fc29b9f4380
Mar  8 20:20:19 kernel: [  794.378432] R10: 0000000000000000 R11:
0000000000000206 R12: 0000000000000098
Mar  8 20:20:19 kernel: [  794.378435] R13: 00007fff8148b2f0 R14:
00005616aa3b32a5 R15: 0000000000000000
Mar  8 20:20:19 kernel: [  794.378440] Modules linked in: dm_mod(E)
md_mod(E) xfs(E) reiser4(E) jfs(E) btrfs(E) xor(E) raid6_pq(E)
libcrc32c(E) zstd_compress(E) zstd_decompress(E) ext4(E) crc16(E)
mbcache(E) jbd2(E) crc32c_generic(E) r8169(E) realtek(E) libphy(E)
ctr(E) ccm(E) iwldvm(E) mac80211(E) libarc4(E) iwlwifi(E) cfg80211(E)
rfkill(E) nls_ascii(E) nls_cp437(E) vfat(E) fat(E) hid_generic(E)
usbhid(E) hid(E) sr_mod(E) cdrom(E) sd_mod(E) uas(E) usb_storage(E)
ahci(E) libahci(E) xhci_pci(E) ehci_pci(E) xhci_hcd(E) sdhci_pci(E)
ehci_hcd(E) cqhci(E) libata(E) rtsx_pci_sdmmc(E) sdhci(E) usbcore(E)
mmc_core(E) scsi_mod(E) rtsx_pci(E) mfd_core(E) usb_common(E) wmi(E)
battery(E) video(E) [last unloaded: libphy]
Mar  8 20:20:19 kernel: [  794.378508] ---[ end trace
c7be9d76279fc2ea ]---
Mar  8 20:20:19 kernel: [  794.378544] RIP:
0010:find_or_create_extent_stripe+0x169/0x1d0 [reiser4]
Mar  8 20:20:19 kernel: [  794.378550] Code: 48 89 58 50 eb b3 4c 89
ef e8 43 40 fd ff eb 85 4c 89 e7 41 89 de e8 a6 2a d4 ee eb a2 4c 89
e7 e8 bc 3e d4 ee e9 11 ff ff ff <0f> 0b 48 89 df e8 bd 42 fb ff eb
89 e8 26 1e be ee f0 ff 4b 0c 74
Mar  8 20:20:19 kernel: [  794.378554] RSP: 0018:ffff9f90cd873c30
EFLAGS: 00010246
Mar  8 20:20:19 kernel: [  794.378558] RAX: 0000000000000000 RBX:
ffff8ab298d12240 RCX: 0000000000000000
Mar  8 20:20:19 kernel: [  794.378562] RDX: 0000000000000000 RSI:
ffff8ab2a5b366f8 RDI: ffff8ab2a5b36600
Mar  8 20:20:19 kernel: [  794.378565] RBP: ffff9f90cd873d20 R08:
0000000000000001 R09: 000000000000000c
Mar  8 20:20:19 kernel: [  794.378568] R10: 0000000000000024 R11:
ffff8ab29f350a82 R12: ffffd75c5061c1c0
Mar  8 20:20:19 kernel: [  794.378572] R13: ffff8ab298d8a418 R14:
0000000000000000 R15: ffff8ab2b2905800
Mar  8 20:20:19 kernel: [  794.378576] FS:  00007fc29b9f4380(0000)
GS:ffff8ab2bfb80000(0000) knlGS:0000000000000000
Mar  8 20:20:19 kernel: [  794.378580] CS:  0010 DS: 0000 ES: 0000
CR0: 0000000080050033
Mar  8 20:20:19 kernel: [  794.378584] CR2: 00005616aa3b0a81 CR3:
00000004187d4002 CR4: 00000000000606e0
Best Professional Regards.
