Re: advice on a bisect

[Mulyadi Santosa <mulyadi.santosa@gmail.com>]

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On Wed, Jun 30, 2021, 01:02 <jim.cromie@gmail.com> wrote:

> I have an old 686 machine, running fedora 30
> (last fedora supporting 686)
>
> processor : 1
> vendor_id : GenuineIntel
> cpu family : 6
> model : 23
> model name : Intel(R) Core(TM)2 Duo CPU     E7400  @ 2.80GHz
> stepping : 10
> microcode : 0xa0b
> cpu MHz : 1614.044
> cache size : 3072 KB
>
> I generally keep it with a fresh kernel at least,
>
> [jimc@popeye linux]$ uname -a
> Linux popeye 5.13.0-rc5-j1-00030-g4c8684fe555e #210 SMP Tue Jun 15
> 16:56:40 MDT 2021 i686 i686 i386 GNU/Linux
>
> recently, I found it wouldnt boot, so bisected.
>
> [jimc@popeye linux]$ git bisect log
> git bisect start
> # bad: [009c9aa5be652675a06d5211e1640e02bbb1c33d] Linux 5.13-rc6
> git bisect bad 009c9aa5be652675a06d5211e1640e02bbb1c33d
> # good: [8124c8a6b35386f73523d27eacb71b5364a68c4c] Linux 5.13-rc4
> git bisect good 8124c8a6b35386f73523d27eacb71b5364a68c4c
> # good: [bd7b12aa6081c3755b693755d608f58e13798a60] Merge tag
> 'powerpc-5.13-5' of
> git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
> git bisect good bd7b12aa6081c3755b693755d608f58e13798a60
> # bad: [fd2cd569a43635877771c00b8a2f4f26275e5562] Merge tag
> 'sound-5.13-rc6' of
> git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
> git bisect bad fd2cd569a43635877771c00b8a2f4f26275e5562
> # good: [9b1111fa80df22c8cb6f9f8634693812cb958f4f] Merge tag
> 'regulator-fix-v5.13-rc4' of
> git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
> git bisect good 9b1111fa80df22c8cb6f9f8634693812cb958f4f
> # bad: [cd1245d75ce93b8fd206f4b34eb58bcfe156d5e9] Merge tag
> 'platform-drivers-x86-v5.13-3' of
> git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
> git bisect bad cd1245d75ce93b8fd206f4b34eb58bcfe156d5e9
> # bad: [2f673816b2db30ce6122fe0e5e6a00de20e8d99a] Merge tag
> 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
> git bisect bad 2f673816b2db30ce6122fe0e5e6a00de20e8d99a
> # bad: [368094df48e680fa51cedb68537408cfa64b788e] Merge tag
> 'for-linus-5.13b-rc6-tag' of
> git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
> git bisect bad 368094df48e680fa51cedb68537408cfa64b788e
> # good: [4c8684fe555e95100030bd330d0a2780ac27952e] Merge tag
> 'spi-fix-v5.13-rc4' of
> git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
> git bisect good 4c8684fe555e95100030bd330d0a2780ac27952e
> # good: [d4c6399900364facd84c9e35ce1540b6046c345f] vmlinux.lds.h:
> Avoid orphan section with !SMP
> git bisect good d4c6399900364facd84c9e35ce1540b6046c345f
> # good: [374aeb91db48bb52216bb9308d611c816fb6cacb] Merge tag
> 'orphans-v5.13-rc6' of
> git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
> git bisect good 374aeb91db48bb52216bb9308d611c816fb6cacb
> # good: [107866a8eb0b664675a260f1ba0655010fac1e08] xen-netback: take a
> reference to the RX task thread
> git bisect good 107866a8eb0b664675a260f1ba0655010fac1e08
> # first bad commit: [368094df48e680fa51cedb68537408cfa64b788e] Merge
> tag 'for-linus-5.13b-rc6-tag' of
> git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
> [jimc@popeye linux]$
>
>
> after bisecting (long time, not much effort)
> I booted the "bad" kernel to single user
> (added 'S' to end of bootline - is this universal ?)
> and poked around, so failure is more subtle than total.
>
> by casual observation, boot hangs at dbus startup
>
> the bad-booting kernel does manage to log its progress,
> journalct -b-1 shows :
>
> Jun 17 03:06:11 popeye kernel: Run /init as init process
> Jun 17 03:06:11 popeye kernel:   with arguments:
> Jun 17 03:06:11 popeye kernel:     /init
> Jun 17 03:06:11 popeye kernel:     rhgb
> Jun 17 03:06:11 popeye kernel:     2
> Jun 17 03:06:11 popeye kernel:   with environment:
> Jun 17 03:06:11 popeye kernel:     HOME=/
> Jun 17 03:06:11 popeye kernel:     TERM=linux
> Jun 17 03:06:11 popeye kernel:     BOOT_IMAGE=/vmlinuz-5.13.0-rc6-cln
>
> Jun 17 03:06:14 popeye systemd[1]: Started Plymouth switch root service.
> Jun 17 03:06:14 popeye audit[1]: SERVICE_START pid=1 uid=0
> auid=4294967295 ses=4294967295 subj=kernel msg='unit=plymouth-switch>
> Jun 17 03:06:14 popeye audit[1]: SERVICE_STOP pid=1 uid=0
> auid=4294967295 ses=4294967295 subj=kernel msg='unit=plymouth-switch->
> Jun 17 03:06:14 popeye systemd[1]: Starting Switch Root...
> Jun 17 03:06:14 popeye systemd[1]: Switching root.
> Jun 17 03:06:14 popeye systemd-journald[131]: Journal stopped
> Jun 17 09:06:22 popeye systemd-journald[131]: Received SIGTERM from
> PID 1 (systemd).
> Jun 17 09:06:22 popeye kernel: printk: systemd: 18 output lines
> suppressed due to ratelimiting
> Jun 17 09:06:22 popeye kernel: kauditd_printk_skb: 21 callbacks suppressed
> Jun 17 09:06:22 popeye kernel: audit: type=1404
> audit(1623920776.499:32): enforcing=1 old_enforcing=0 auid=4294967295
> ses=42949>
> Jun 17 09:06:22 popeye kernel: SELinux:  Permission watch in class
> filesystem not defined in policy.
> Jun 17 09:06:22 popeye kernel: SELinux:  Permission watch in class
> file not defined in policy.
>
> (at end)
>
> Jun 17 09:06:33 popeye systemd-logind[617]: Watching system buttons on
> /dev/input/event0 (Power Button)
> Jun 17 09:06:33 popeye systemd-logind[617]: Watching system buttons on
> /dev/input/event2 (USB USB Keykoard)
> Jun 17 09:06:33 popeye systemd-logind[617]: Watching system buttons on
> /dev/input/event3 (USB USB Keykoard Consumer Control)
> Jun 17 09:06:33 popeye systemd-logind[617]: Watching system buttons on
> /dev/input/event4 (USB USB Keykoard System Control)
> Jun 17 09:06:33 popeye rsyslogd[604]: [origin software="rsyslogd"
> swVersion="8.2002.0" x-pid="604" x-info="https://www.rsyslog.>
> Jun 17 09:06:33 popeye systemd[1]: Started System Logging Service.
> Jun 17 09:06:33 popeye audit[1]: SERVICE_START pid=1 uid=0
> auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg=>
> Jun 17 09:06:33 popeye ModemManager[605]: <info>  ModemManager
> (version 1.10.2-1.fc30) starting in system bus...
> Jun 17 09:06:33 popeye rsyslogd[604]: imjournal: fscanf on state file
> `/var/lib/rsyslog/imjournal.state' failed  [v8.2002.0 try>
> Jun 17 09:06:33 popeye rsyslogd[604]: imjournal: ignoring invalid
> state file /var/lib/rsyslog/imjournal.state [v8.2002.0]
> Jun 17 09:06:33 popeye chronyd[625]: Frequency -3.051 +/- 0.183 ppm
> read from /var/lib/chrony/drift
> Jun 17 09:06:33 popeye chronyd[625]: Using right/UTC timezone to
> obtain leap second data
> Jun 17 09:06:34 popeye systemd[1]: Started NTP client/server.
> Jun 17 09:06:34 popeye audit[1]: SERVICE_START pid=1 uid=0
> auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg=>
> Jun 17 09:06:34 popeye smartd[612]: smartd 7.1 2019-12-30 r5022
> [i686-linux-5.13.0-rc6-cln] (local build)
> Jun 17 09:06:34 popeye smartd[612]: Copyright (C) 2002-19, Bruce
> Allen, Christian Franke, www.smartmontools.org
> Jun 17 09:06:34 popeye smartd[612]: Opened configuration file
> /etc/smartmontools/smartd.conf
> Jun 17 09:06:34 popeye smartd[612]: Configuration file
> /etc/smartmontools/smartd.conf was parsed, found DEVICESCAN, scanning
> de>
> Jun 17 09:06:34 popeye smartd[612]: Device: /dev/sda, type changed
> from 'scsi' to 'sat'
> Jun 17 09:06:34 popeye smartd[612]: Device: /dev/sda [SAT], opened
> Jun 17 09:06:34 popeye smartd[612]: Device: /dev/sda [SAT],
> ST3160318AS, S/N:9VY1J685, WWN:5-000c50-0159dbd9f, FW:CC44, 160 GB
> Jun 17 09:06:34 popeye smartd[612]: Device: /dev/sda [SAT], found in
> smartd database: Seagate Barracuda 7200.12
> Jun 17 09:06:34 popeye smartd[612]: Device: /dev/sda [SAT], WARNING: A
> firmware update for this drive may be available,
> Jun 17 09:06:34 popeye smartd[612]: see the following Seagate web pages:
> Jun 17 09:06:34 popeye smartd[612]:
> http://knowledge.seagate.com/articles/en_US/FAQ/207931en
> Jun 17 09:06:34 popeye smartd[612]:
> http://knowledge.seagate.com/articles/en_US/FAQ/213891en
> Jun 17 09:06:34 popeye smartd[612]: Device: /dev/sda [SAT], is SMART
> capable. Adding to "monitor" list.
> Jun 17 09:06:34 popeye smartd[612]: Monitoring 1 ATA/SATA, 0 SCSI/SAS
> and 0 NVMe devices
> Jun 17 09:06:35 popeye systemd[1]: Started Self Monitoring and
> Reporting Technology (SMART) Daemon.
> Jun 17 09:06:35 popeye audit[1]: SERVICE_START pid=1 uid=0
> auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg=>
> Jun 17 09:06:36 popeye systemd[1]: Started D-Bus System Message Bus.
> Jun 17 09:06:36 popeye audit[1]: SERVICE_START pid=1 uid=0
> auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg=>
> Jun 17 09:06:36 popeye dbus-broker-launch[623]: ERROR
> proc_get_seclabel @ ../src/util/proc.c +31: Permission denied
> Jun 17 09:06:36 popeye dbus-broker-launch[623]:       broker_new @
> ../src/broker/broker.c +105
> Jun 17 09:06:36 popeye dbus-broker-launch[623]:       run @
> ../src/broker/main.c +244
> Jun 17 09:06:36 popeye dbus-broker-launch[623]:       main @
> ../src/broker/main.c +270
> Jun 17 09:06:36 popeye dbus-broker-launch[623]: ERROR service_add @
> ../src/launch/service.c +545: Connection reset by peer
> Jun 17 09:06:36 popeye dbus-broker-launch[623]:
> launcher_add_services @ ../src/launch/launcher.c +809
> Jun 17 09:06:36 popeye dbus-broker-launch[623]:       launcher_run @
> ../src/launch/launcher.c +1385
> Jun 17 09:06:36 popeye dbus-broker-launch[623]:       run @
> ../src/launch/main.c +153
> Jun 17 09:06:36 popeye dbus-broker-launch[623]:       main @
> ../src/launch/main.c +181
> Jun 17 09:06:36 popeye dbus-broker-launch[623]: Exiting due to fatal
> error: -104
> Jun 17 09:06:42 popeye rsyslogd[604]: imjournal from
> <popeye:dhclient>: begin to drop messages due to rate-limiting
> lines 1430-1473/1473 (END)
>
>
> at this point, things hung & I powercycled to reboot.
>
> I cant quite explain the logging around  9:06,  it looks more orderly
> than the powercycle I recall.  Im gonna have to repeat this test,
> noting times etc.
>
>
> separately
>
> Ive been wanting to find another distro which supports 686 and older
> hardware,
> thats now arriving sooner, since box doesnt well serve its most common use.
>
> any good distro reqs
>

Try antiX

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