[Bug 111601] regression: deadlock-freeze due to kernel commit aa56a292ce623734ddd30f52d73f527d1f3529b5

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111601

--- Comment #4 from howaboutsynergy <howaboutsynergy at pm.me> ---
(In reply to Lakshmi from comment #3)
> What's the platform under use?

Intel Core i7-8700K CPU, 12 cores
ASUS Prime Z370-A motherboard

[    0.373549] smpboot: CPU0: Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz (family:
0x6, model: 0x9e, stepping: 0xa)
microcode       : 0xb4
[    0.000000] DMI: System manufacturer System Product Name/PRIME Z370-A, BIOS
2201 05/27/2019

32G RAM, no swap(during memfreeze test, but swap in zram during chromium
compilation)
64G ext4 zram of /tmp and /var/tmp

/dev/zram1       63G   53M   60G   1% /tmp
/dev/zram2       63G   53M   60G   1% /var/tmp

$ swapon
NAME       TYPE      SIZE USED PRIO
/dev/zram0 partition  64G   0B   -2


$ cat /proc/cmdline 
BOOT_IMAGE=/boot/vmlinuz-linux-git
root=UUID=2b8b9ab8-7ac5-4586-aa42-d7ffb12de92a rw root_trim=yes
rd.luks.allow-discards rd.luks.options=discard ipv6.disable=1
ipv6.disable_ipv6=1 ipv6.autoconf=0 loglevel=15 log_buf_len=16M ignore_loglevel
printk.always_kmsg_dump=y printk.time=y printk.devkmsg=on mminit_loglevel=4
memory_corruption_check=1 fbcon=scrollback:4096k fbcon=font:ProFont6x11
net.ifnames=0 nolvm dobtrfs console=tty1 earlyprintk=vga audit=0
systemd.log_target=kmsg systemd.journald.forward_to_console=1 enforcing=0
udev.children-max=1256 rd.udev.children-max=1256 nohz=on oops=panic
crashkernel=256M panic=0 page_poison=1 psi=1 sysrq_always_enabled
random.trust_cpu=off logo.nologo lpj=0 mce=bootlog reboot=force,cold noexec=on
nohibernate scsi_mod.use_blk_mq=1 consoleblank=120 mitigations=off nospectre_v1
nospectre_v2 spectre_v2=off nospec_store_bypass_disable
kvm-intel.vmentry_l1d_flush=never l1tf=off nopti pti=off no_stf_barrier noibrs
noibpb ssbd=force-off spectre_v2_user=off noretpoline mds=off rd.log=all noefi
cpuidle.governor=menu zram.num_devices=3 zswap.enabled=0
zswap.same_filled_pages_enabled=1 zswap.compressor=zstd
zswap.max_pool_percent=40 zswap.zpool=z3fold vsyscall=none i915.enable_fbc=1
i915.verbose_state_checks=1 i915.enable_hangcheck=1 i915.error_capture=1


I've just discovered why reading the kdump with `crash` didn't work, because
crashkernel=256M was too low and it would OOM during `makedumpfile` so the dump
would be incomplete/garbage(tested this only on the AMD/Radeon laptop which
would do this with crashkernel=128M), so I will thus increase that to 512M on
the Intel computer and have something next...

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