Bug#991509: linux-image-amd64: marking TSC unstable due to check_tsc_sync_source failed (AMD Ryzen)
Package: linux-image-amd64
Version: 5.10.46-2
Severity: normal
X-Debbugs-Cc: ledufff@hotmail.com
Hello,
My system is stuck with HPET clocksource
dmesg | egrep -i 'tsc|hpet|clocksource'
[ 0.000000] tsc: Fast TSC calibration using PIT
[ 0.000000] tsc: Detected 2096.096 MHz processor
[ 0.004968] ACPI: HPET 0x00000000B90A3000 000038 (v01 LENOVO TP-R11
00001210 PTEC 00000002)
[ 0.005018] ACPI: Reserving HPET table memory at [mem 0xb90a3000-0xb90a3037]
[ 0.014115] ACPI: HPET id: 0x43538210 base: 0xfed00000
[ 0.014183] clocksource: refined-jiffies: mask: 0xffffffff max_cycles:
0xffffffff, max_idle_ns: 7645519600211568 ns
[ 0.059588] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff,
max_idle_ns: 133484873504 ns
[ 0.079620] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles:
0x1e36c89f085, max_idle_ns: 440795235573 ns
[ 0.199622] TSC synchronization [CPU#0 -> CPU#1]:
[ 0.199622] Measured 5479288407 cycles TSC warp between CPUs, turning off
TSC clock.
[ 0.199622] tsc: Marking TSC unstable due to check_tsc_sync_source failed
[ 0.216551] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff,
max_idle_ns: 7645041785100000 ns
[ 0.373390] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[ 0.373393] hpet0: 3 comparators, 32-bit 14.318180 MHz counter
[ 0.375642] clocksource: Switched to clocksource hpet
[ 0.392540] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff,
max_idle_ns: 2085701024 ns
[ 1.137978] rtc_cmos 00:01: alarms up to one month, y3k, 114 bytes nvram,
hpet irqs
Sorry to bother but I'd like to report to debian this known bug in
bugzilla.kernel = https://bugzilla.kernel.org/show_bug.cgi?id=202525 and Lenovo
= https://forums.lenovo.com/t5/Other-Linux-Discussions/Clocksource-falling-
back-to-HPET-bec-TSC-is-unstable-ThinkPad-E14-Gen-2-maybe-others/m-p/5036464
-- System Information:
Debian Release: 11.0
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.10.0-8-amd64 (SMP w/8 CPU threads)
Locale: LANG=es_CO.UTF-8, LC_CTYPE=es_CO.UTF-8 (charmap=UTF-8),
LANGUAGE=es_CO:es
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages linux-image-amd64 depends on:
ii linux-image-5.10.0-8-amd64 5.10.46-2
linux-image-amd64 recommends no packages.
linux-image-amd64 suggests no packages.
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