From: Rafael David Tinoco <rafael.tinoco@linaro.org>
To: Sasha Levin <sashal@kernel.org>,
stable@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Prarit Bhargava <prarit@redhat.com>,
Shuah Khan <shuah@kernel.org>, Stafford Horne <shorne@gmail.com>,
gregkh@linuxfoundation.org
Subject: Re: [PATCH AUTOSEL 4.9 11/48] cpupower: Fix coredump on VMWare
Date: Mon, 12 Nov 2018 08:31:57 -0200 [thread overview]
Message-ID: <87a22cde-f6a8-0103-c20e-150f2d8157ba@linaro.org> (raw)
In-Reply-To: <20181031231054.29333-11-sashal@kernel.org>
On 10/31/18 9:10 PM, Sasha Levin wrote:
> From: Prarit Bhargava <prarit@redhat.com>
>
> [ Upstream commit f69ffc5d3db8f1f03fd6d1df5930f9a1fbd787b6 ]
>
> cpupower crashes on VMWare guests. The guests have the AMD PStateDef MSR
> (0xC0010064 + state number) set to zero. As a result fid and did are zero
> and the crash occurs because of a divide by zero (cof = fid/did). This
> can be prevented by checking the enable bit in the PStateDef MSR before
> calculating cof. By doing this the value of pstate[i] remains zero and
> the value can be tested before displaying the active Pstates.
>
> Check the enable bit in the PstateDef register for all supported families
> and only print out enabled Pstates.
>
> Signed-off-by: Prarit Bhargava <prarit@redhat.com>
> Cc: Shuah Khan <shuah@kernel.org>
> Cc: Stafford Horne <shorne@gmail.com>
> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
> tools/power/cpupower/utils/cpufreq-info.c | 2 ++
> tools/power/cpupower/utils/helpers/amd.c | 5 +++++
> 2 files changed, 7 insertions(+)
>
> diff --git a/tools/power/cpupower/utils/cpufreq-info.c b/tools/power/cpupower/utils/cpufreq-info.c
> index 590d12a25f6e..8d7580e4b299 100644
> --- a/tools/power/cpupower/utils/cpufreq-info.c
> +++ b/tools/power/cpupower/utils/cpufreq-info.c
> @@ -202,6 +202,8 @@ static int get_boost_mode(unsigned int cpu)
> printf(_(" Boost States: %d\n"), b_states);
> printf(_(" Total States: %d\n"), pstate_no);
> for (i = 0; i < pstate_no; i++) {
> + if (!pstates[i])
> + continue;
> if (i < b_states)
> printf(_(" Pstate-Pb%d: %luMHz (boost state)"
> "\n"), i, pstates[i]);
> diff --git a/tools/power/cpupower/utils/helpers/amd.c b/tools/power/cpupower/utils/helpers/amd.c
> index 6437ef39aeea..82adfb33d7a5 100644
> --- a/tools/power/cpupower/utils/helpers/amd.c
> +++ b/tools/power/cpupower/utils/helpers/amd.c
> @@ -103,6 +103,11 @@ int decode_pstates(unsigned int cpu, unsigned int cpu_family,
> }
> if (read_msr(cpu, MSR_AMD_PSTATE + i, &pstate.val))
> return -1;
> + if ((cpu_family == 0x17) && (!pstate.fam17h_bits.en))
> + continue;
> + else if (!pstate.bits.en)
> + continue;
> +
> pstates[i] = get_cof(cpu_family, pstate);
> }
> *no = i;
>
Sasha,
This commit is causing:
$ make V=1 -C tools/power/cpupower all
gcc -fPIC -DVERSION=\"4.9.136.142.g36c7703\" -DPACKAGE=\"cpupower\"
-DPACKAGE_BUGREPORT=\"linux-pm@vger.kernel.org\" -D_GNU_SOURCE -pipe
-DNLS -Wall -Wchar-subscripts -Wpointer-arith -Wsign-compare
-Wno-pointer-sign -Wdeclaration-after-statement -Wshadow -O1 -g -DDEBUG
-I./lib -I ./utils -o utils/helpers/amd.o -c utils/helpers/amd.c
utils/helpers/amd.c: In function ‘decode_pstates’:
utils/helpers/amd.c:106:39: error: ‘union msr_pstate’ has no member
named ‘fam17h_bits’
if ((cpu_family == 0x17) && (!pstate.fam17h_bits.en))
I think it should be dropped from v4.4 and v4.9 RCs, since this is a fix
for a CPU that isn't supported for those 2.
Thanks
--
Rafael D. Tinoco
Linaro Kernel Validation
next prev parent reply other threads:[~2018-11-12 10:32 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-31 23:10 [PATCH AUTOSEL 4.9 01/48] net: ethernet: ti: cpsw: unsync mcast entries while switch promisc mode Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 02/48] locking/lockdep: Fix debug_locks off performance problem Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 03/48] ataflop: fix error handling during setup Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 04/48] swim: fix cleanup on setup error Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 05/48] tun: Consistently configure generic netdev params via rtnetlink Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 06/48] s390/sthyi: Fix machine name validity indication Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 07/48] hwmon: (pwm-fan) Set fan speed to 0 on suspend Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 08/48] perf tools: Free temporary 'sys' string in read_event_files() Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 09/48] perf tools: Cleanup trace-event-info 'tdata' leak Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 10/48] perf strbuf: Match va_{add,copy} with va_end Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 11/48] cpupower: Fix coredump on VMWare Sasha Levin
2018-11-12 10:31 ` Rafael David Tinoco [this message]
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 12/48] mmc: sdhci-pci-o2micro: Add quirk for O2 Micro dev 0x8620 rev 0x01 Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 13/48] iwlwifi: pcie: avoid empty free RB queue Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 14/48] x86/olpc: Indicate that legacy PC XO-1 platform should not register RTC Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 15/48] cpufreq: dt: Try freeing static OPPs only if we have added them Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 16/48] regulator: fixed: Default enable high on DT regulators Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 17/48] Bluetooth: btbcm: Add entry for BCM4335C0 UART bluetooth Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 18/48] x86: boot: Fix EFI stub alignment Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 19/48] pinctrl: qcom: spmi-mpp: Fix err handling of pmic_mpp_set_mux Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 20/48] brcmfmac: fix for proper support of 160MHz bandwidth Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 21/48] kprobes: Return error if we fail to reuse kprobe instead of BUG_ON() Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 22/48] ACPI / LPSS: Add alternative ACPI HIDs for Cherry Trail DMA controllers Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 23/48] pinctrl: qcom: spmi-mpp: Fix drive strength setting Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 24/48] pinctrl: spmi-mpp: Fix pmic_mpp_config_get() to be compliant Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 25/48] pinctrl: ssbi-gpio: Fix pm8xxx_pin_config_get() " Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 26/48] ixgbevf: VF2VF TCP RSS Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 27/48] ath10k: schedule hardware restart if WMI command times out Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 28/48] cgroup, netclassid: add a preemption point to write_classid Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 29/48] scsi: esp_scsi: Track residual for PIO transfers Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 30/48] scsi: megaraid_sas: fix a missing-check bug Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 31/48] RDMA/core: Do not expose unsupported counters Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 32/48] IB/ipoib: Clear IPCB before icmp_send Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 33/48] tpm: suppress transmit cmd error logs when TPM 1.2 is disabled/deactivated Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 34/48] Drivers: hv: kvp: Fix two "this statement may fall through" warnings Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 35/48] VMCI: Resource wildcard match fixed Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 36/48] usb: gadget: udc: atmel: handle at91sam9rl PMC Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 37/48] ext4: fix argument checking in EXT4_IOC_MOVE_EXT Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 38/48] MD: fix invalid stored role for a disk Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 39/48] PCI/MSI: Warn and return error if driver enables MSI/MSI-X twice Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 40/48] coresight: etb10: Fix handling of perf mode Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 41/48] crypto: caam - fix implicit casts in endianness helpers Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 42/48] usb: chipidea: Prevent unbalanced IRQ disable Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 43/48] driver/dma/ioat: Call del_timer_sync() without holding prep_lock Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 44/48] uio: ensure class is registered before devices Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 45/48] scsi: lpfc: Correct soft lockup when running mds diagnostics Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 46/48] signal: Always deliver the kernel's SIGKILL and SIGSTOP to a pid namespace init Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 47/48] dmaengine: dma-jz4780: Return error if not probed from DT Sasha Levin
2018-10-31 23:10 ` [PATCH AUTOSEL 4.9 48/48] ALSA: hda: Check the non-cached stream buffers more explicitly Sasha Levin
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