Feedback: segfault on Reiser4 SFRN 5.1.3

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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 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            E     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.

-- 
Jose R R
http://metztli.it
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Download Metztli Reiser4: Debian Buster w/ Linux 5.4.18 AMD64
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feats ZSTD compression https://sf.net/projects/metztli-reiser4/
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Official current Reiser4 resources: https://reiser4.wiki.kernel.org/



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