[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
This bug was fixed in the package linux - 4.15.0-115.116
---
linux (4.15.0-115.116) bionic; urgency=medium
* bionic/linux: 4.15.0-115.116 -proposed tracker (LP: #1893055)
* [Potential Regression] dscr_inherit_exec_test from powerpc in
ubuntu_kernel_selftests failed on B/E/F (LP: #1888332)
- powerpc/64s: Don't init FSCR_DSCR in __init_FSCR()
linux (4.15.0-114.115) bionic; urgency=medium
* bionic/linux: 4.15.0-114.115 -proposed tracker (LP: #1891052)
* ipsec: policy priority management is broken (LP: #1890796)
- xfrm: policy: match with both mark and mask on user interfaces
linux (4.15.0-113.114) bionic; urgency=medium
* bionic/linux: 4.15.0-113.114 -proposed tracker (LP: #1890705)
* Packaging resync (LP: #1786013)
- update dkms package versions
* Reapply "usb: handle warm-reset port requests on hub resume" (LP: #1859873)
- usb: handle warm-reset port requests on hub resume
* Bionic update: upstream stable patchset 2020-07-29 (LP: #1889474)
- gpio: arizona: handle pm_runtime_get_sync failure case
- gpio: arizona: put pm_runtime in case of failure
- pinctrl: amd: fix npins for uart0 in kerncz_groups
- mac80211: allow rx of mesh eapol frames with default rx key
- scsi: scsi_transport_spi: Fix function pointer check
- xtensa: fix __sync_fetch_and_{and,or}_4 declarations
- xtensa: update *pos in cpuinfo_op.next
- drivers/net/wan/lapbether: Fixed the value of hard_header_len
- net: sky2: initialize return of gm_phy_read
- drm/nouveau/i2c/g94-: increase NV_PMGR_DP_AUXCTL_TRANSACTREQ timeout
- irqdomain/treewide: Keep firmware node unconditionally allocated
- SUNRPC reverting d03727b248d0 ("NFSv4 fix CLOSE not waiting for direct IO
compeletion")
- spi: spi-fsl-dspi: Exit the ISR with IRQ_NONE when it's not ours
- IB/umem: fix reference count leak in ib_umem_odp_get()
- uprobes: Change handle_swbp() to send SIGTRAP with si_code=SI_KERNEL, to
fix
GDB regression
- ALSA: info: Drop WARN_ON() from buffer NULL sanity check
- ASoC: rt5670: Correct RT5670_LDO_SEL_MASK
- btrfs: fix double free on ulist after backref resolution failure
- btrfs: fix mount failure caused by race with umount
- btrfs: fix page leaks after failure to lock page for delalloc
- bnxt_en: Fix race when modifying pause settings.
- hippi: Fix a size used in a 'pci_free_consistent()' in an error handling
path
- ax88172a: fix ax88172a_unbind() failures
- net: dp83640: fix SIOCSHWTSTAMP to update the struct with actual
configuration
- drm: sun4i: hdmi: Fix inverted HPD result
- net: smc91x: Fix possible memory leak in smc_drv_probe()
- bonding: check error value of register_netdevice() immediately
- mlxsw: destroy workqueue when trap_register in mlxsw_emad_init
- ipvs: fix the connection sync failed in some cases
- i2c: rcar: always clear ICSAR to avoid side effects
- bonding: check return value of register_netdevice() in bond_newlink()
- serial: exar: Fix GPIO configuration for Sealevel cards based on XR17V35X
- scripts/decode_stacktrace: strip basepath from all paths
- HID: i2c-hid: add Mediacom FlexBook edge13 to descriptor override
- HID: apple: Disable Fn-key key-re-mapping on clone keyboards
- dmaengine: tegra210-adma: Fix runtime PM imbalance on error
- Input: add `SW_MACHINE_COVER`
- spi: mediatek: use correct SPI_CFG2_REG MACRO
- regmap: dev_get_regmap_match(): fix string comparison
- hwmon: (aspeed-pwm-tacho) Avoid possible buffer overflow
- dmaengine: ioat setting ioat timeout as module parameter
- Input: synaptics - enable InterTouch for ThinkPad X1E 1st gen
- usb: gadget: udc: gr_udc: fix memleak on error handling path in
gr_ep_init()
- arm64: Use test_tsk_thread_flag() for checking TIF_SINGLESTEP
- x86: math-emu: Fix up 'cmp' insn for clang ias
- binder: Don't use mmput() from shrinker function.
- usb: xhci-mtk: fix the failure of bandwidth allocation
- usb: xhci: Fix ASM2142/ASM3142 DMA addressing
- Revert "cifs: Fix the target file was deleted when rename failed."
- staging: wlan-ng: properly check endpoint types
- staging: comedi: addi_apci_1032: check INSN_CONFIG_DIGITAL_TRIG shift
- staging: comedi: ni_6527: fix INSN_CONFIG_DIGITAL_TRIG support
- staging: comedi: addi_apci_1500: check INSN_CONFIG_DIGITAL_TRIG shift
- staging: comedi: addi_apci_1564: check INSN_CONFIG_DIGITAL_TRIG shift
- serial: 8250: fix null-ptr-deref in serial8250_start_tx()
- serial: 8250_mtk: Fix high-speed baud rates clamping
- fbdev: Detect integer underflow at "struct fbcon_ops"->clear_margins.
- vt: Reject zero-sized screen buffer size.
- Makefile: Fix GCC_TOOLCHAIN_DIR prefix for Clang cross compilation
- mm/memcg: fix refcount error while moving and swapping
- io-mapping: indicate mapping failure
- parisc: Add atomic64_set_release()
[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
This bug was fixed in the package linux - 5.4.0-45.49
---
linux (5.4.0-45.49) focal; urgency=medium
* focal/linux: 5.4.0-45.49 -proposed tracker (LP: #1893050)
* [Potential Regression] dscr_inherit_exec_test from powerpc in
ubuntu_kernel_selftests failed on B/E/F (LP: #1888332)
- powerpc/64s: Don't init FSCR_DSCR in __init_FSCR()
linux (5.4.0-44.48) focal; urgency=medium
* focal/linux: 5.4.0-44.48 -proposed tracker (LP: #1891049)
* Packaging resync (LP: #1786013)
- [Packaging] update helper scripts
* ipsec: policy priority management is broken (LP: #1890796)
- xfrm: policy: match with both mark and mask on user interfaces
linux (5.4.0-43.47) focal; urgency=medium
* focal/linux: 5.4.0-43.47 -proposed tracker (LP: #1890746)
* Packaging resync (LP: #1786013)
- update dkms package versions
* Devlink - add RoCE disable kernel support (LP: #1877270)
- devlink: Add new "enable_roce" generic device param
- net/mlx5: Document flow_steering_mode devlink param
- net/mlx5: Handle "enable_roce" devlink param
- IB/mlx5: Rename profile and init methods
- IB/mlx5: Load profile according to RoCE enablement state
- net/mlx5: Remove unneeded variable in mlx5_unload_one
- net/mlx5: Add devlink reload
- IB/mlx5: Do reverse sequence during device removal
* msg_zerocopy.sh in net from ubuntu_kernel_selftests failed (LP: #1812620)
- selftests/net: relax cpu affinity requirement in msg_zerocopy test
* Enlarge hisi_sec2 capability (LP: #1890222)
- Revert "UBUNTU: [Config] Disable hisi_sec2 temporarily"
- crypto: hisilicon - update SEC driver module parameter
* Fix missing HDMI/DP Audio on an HP Desktop (LP: #1890441)
- ALSA: hda/hdmi: Add quirk to force connectivity
* Fix IOMMU error on AMD Radeon Pro W5700 (LP: #1890306)
- PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken
* ASoC:amd:renoir: the dmic can't record sound after suspend and resume
(LP: #1890220)
- SAUCE: ASoC: amd: renoir: restore two more registers during resume
* No sound, Dummy output on Acer Swift 3 SF314-57G with Ice Lake core-i7 CPU
(LP: #1877757)
- ASoC: SOF: Intel: hda: fix generic hda codec support
* Fix right speaker of HP laptop (LP: #1889375)
- SAUCE: hda/realtek: Fix right speaker of HP laptop
* blk_update_request error when mount nvme partition (LP: #1872383)
- SAUCE: nvme-pci: prevent SK hynix PC400 from using Write Zeroes command
* soc/amd/renoir: detect dmic from acpi table (LP: #1887734)
- ASoC: amd: add logic to check dmic hardware runtime
- ASoC: amd: add ACPI dependency check
- ASoC: amd: fixed kernel warnings
* soc/amd/renoir: change the module name to make it work with ucm3
(LP: #1888166)
- AsoC: amd: add missing snd- module prefix to the acp3x-rn driver kernel
module
- SAUCE: remove a kernel module since its name is changed
* Focal update: v5.4.55 upstream stable release (LP: #1890343)
- AX.25: Fix out-of-bounds read in ax25_connect()
- AX.25: Prevent out-of-bounds read in ax25_sendmsg()
- dev: Defer free of skbs in flush_backlog
- drivers/net/wan/x25_asy: Fix to make it work
- ip6_gre: fix null-ptr-deref in ip6gre_init_net()
- net-sysfs: add a newline when printing 'tx_timeout' by sysfs
- net: udp: Fix wrong clean up for IS_UDPLITE macro
- qrtr: orphan socket in qrtr_release()
- rtnetlink: Fix memory(net_device) leak when ->newlink fails
- rxrpc: Fix sendmsg() returning EPIPE due to recvmsg() returning ENODATA
- tcp: allow at most one TLP probe per flight
- AX.25: Prevent integer overflows in connect and sendmsg
- sctp: shrink stream outq only when new outcnt < old outcnt
- sctp: shrink stream outq when fails to do addstream reconf
- udp: Copy has_conns in reuseport_grow().
- udp: Improve load balancing for SO_REUSEPORT.
- regmap: debugfs: check count when read regmap file
- PM: wakeup: Show statistics for deleted wakeup sources again
- Revert "dpaa_eth: fix usage as DSA master, try 3"
- Linux 5.4.55
* Add support for Atlantic NIC firmware v4 (LP: #1886908)
- net: atlantic: simplify hw_get_fw_version() usage
- net: atlantic: align return value of ver_match function with function name
- net: atlantic: add support for FW 4.x
* perf vendor events s390: Add new deflate counters for IBM z15 (LP: #1888551)
- perf vendor events s390: Add new deflate counters for IBM z15
* Focal update: v5.4.54 upstream stable release (LP: #1889669)
- soc: qcom: rpmh: Dirt can only make you dirtier, not cleaner
- gpio: arizona: handle pm_runtime_get_sync failure case
- gpio: arizona: put pm_runtime in case of failure
- pinctrl: amd: fix npins for uart0 in kerncz_groups
- mac80211: allow rx of mesh eapol frames with default rx key
- scsi: scsi_transport_spi: Fix function pointer check
- xtensa: fix __sync_fetch_and_{and,or}_4 declarations
[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed- bionic'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-bionic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888332 Title: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: Fix Committed Status in linux source package in Eoan: Won't Fix Status in linux source package in Focal: Fix Committed Bug description: [Impact] Code that touches DSCR user MSR does not set dscr_inherit, which breaks DSCR restore doing context switches and inheritance when forking. DSCR is used to control cache hinting. This is caused by lack of kernel interrupt when the DSCR user MSR is written, which is controlled by FSCR which would otherwise cause a facility unavailable interrupt. [Test case] apt-get source linux cd linux-5.4.0/tools/testing/tools/selftests/powerpc/ make -j 32 make -C dscr run_tests make -C ptrace run_tests make -C tm run_tests Look up for "not ok" versus "ok", specially for dscr_inherit_exec_test, ptrace-tar and tm-resched-tar. [Potential regression] Manipulating DSCR might break on different machines (with DTs containing /cpus/ibm,powerpc-cpu-features, for example). Code that does so might crash because the facility unavailable interrupt handling might be not working correctly. Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node) # selftests: powerpc/dscr: dscr_inherit_exec_test # test: dscr_inherit_exec_test # tags: git_version:unknown # Parent DSCR 1 was not inherited over exec (kernel value) # Child didn't exit cleanly # failure: dscr_inherit_exec_test not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888332/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-focal -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888332 Title: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: Fix Committed Status in linux source package in Eoan: Won't Fix Status in linux source package in Focal: Fix Committed Bug description: [Impact] Code that touches DSCR user MSR does not set dscr_inherit, which breaks DSCR restore doing context switches and inheritance when forking. DSCR is used to control cache hinting. This is caused by lack of kernel interrupt when the DSCR user MSR is written, which is controlled by FSCR which would otherwise cause a facility unavailable interrupt. [Test case] apt-get source linux cd linux-5.4.0/tools/testing/tools/selftests/powerpc/ make -j 32 make -C dscr run_tests make -C ptrace run_tests make -C tm run_tests Look up for "not ok" versus "ok", specially for dscr_inherit_exec_test, ptrace-tar and tm-resched-tar. [Potential regression] Manipulating DSCR might break on different machines (with DTs containing /cpus/ibm,powerpc-cpu-features, for example). Code that does so might crash because the facility unavailable interrupt handling might be not working correctly. Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node) # selftests: powerpc/dscr: dscr_inherit_exec_test # test: dscr_inherit_exec_test # tags: git_version:unknown # Parent DSCR 1 was not inherited over exec (kernel value) # Child didn't exit cleanly # failure: dscr_inherit_exec_test not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888332/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
** Changed in: linux (Ubuntu Bionic) Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888332 Title: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: Fix Committed Status in linux source package in Eoan: Won't Fix Status in linux source package in Focal: Fix Committed Bug description: [Impact] Code that touches DSCR user MSR does not set dscr_inherit, which breaks DSCR restore doing context switches and inheritance when forking. DSCR is used to control cache hinting. This is caused by lack of kernel interrupt when the DSCR user MSR is written, which is controlled by FSCR which would otherwise cause a facility unavailable interrupt. [Test case] apt-get source linux cd linux-5.4.0/tools/testing/tools/selftests/powerpc/ make -j 32 make -C dscr run_tests make -C ptrace run_tests make -C tm run_tests Look up for "not ok" versus "ok", specially for dscr_inherit_exec_test, ptrace-tar and tm-resched-tar. [Potential regression] Manipulating DSCR might break on different machines (with DTs containing /cpus/ibm,powerpc-cpu-features, for example). Code that does so might crash because the facility unavailable interrupt handling might be not working correctly. Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node) # selftests: powerpc/dscr: dscr_inherit_exec_test # test: dscr_inherit_exec_test # tags: git_version:unknown # Parent DSCR 1 was not inherited over exec (kernel value) # Child didn't exit cleanly # failure: dscr_inherit_exec_test not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888332/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
** Changed in: linux (Ubuntu Focal) Status: In Progress => Fix Committed ** Changed in: linux (Ubuntu Focal) Importance: Undecided => High ** Changed in: linux (Ubuntu Focal) Importance: High => Medium ** Changed in: linux (Ubuntu Bionic) Importance: Undecided => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888332 Title: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: In Progress Status in linux source package in Eoan: Won't Fix Status in linux source package in Focal: Fix Committed Bug description: [Impact] Code that touches DSCR user MSR does not set dscr_inherit, which breaks DSCR restore doing context switches and inheritance when forking. DSCR is used to control cache hinting. This is caused by lack of kernel interrupt when the DSCR user MSR is written, which is controlled by FSCR which would otherwise cause a facility unavailable interrupt. [Test case] apt-get source linux cd linux-5.4.0/tools/testing/tools/selftests/powerpc/ make -j 32 make -C dscr run_tests make -C ptrace run_tests make -C tm run_tests Look up for "not ok" versus "ok", specially for dscr_inherit_exec_test, ptrace-tar and tm-resched-tar. [Potential regression] Manipulating DSCR might break on different machines (with DTs containing /cpus/ibm,powerpc-cpu-features, for example). Code that does so might crash because the facility unavailable interrupt handling might be not working correctly. Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node) # selftests: powerpc/dscr: dscr_inherit_exec_test # test: dscr_inherit_exec_test # tags: git_version:unknown # Parent DSCR 1 was not inherited over exec (kernel value) # Child didn't exit cleanly # failure: dscr_inherit_exec_test not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888332/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
** Changed in: linux (Ubuntu Bionic) Status: Triaged => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888332 Title: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: In Progress Status in linux source package in Eoan: Won't Fix Status in linux source package in Focal: In Progress Bug description: [Impact] Code that touches DSCR user MSR does not set dscr_inherit, which breaks DSCR restore doing context switches and inheritance when forking. DSCR is used to control cache hinting. This is caused by lack of kernel interrupt when the DSCR user MSR is written, which is controlled by FSCR which would otherwise cause a facility unavailable interrupt. [Test case] apt-get source linux cd linux-5.4.0/tools/testing/tools/selftests/powerpc/ make -j 32 make -C dscr run_tests make -C ptrace run_tests make -C tm run_tests Look up for "not ok" versus "ok", specially for dscr_inherit_exec_test, ptrace-tar and tm-resched-tar. [Potential regression] Manipulating DSCR might break on different machines (with DTs containing /cpus/ibm,powerpc-cpu-features, for example). Code that does so might crash because the facility unavailable interrupt handling might be not working correctly. Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node) # selftests: powerpc/dscr: dscr_inherit_exec_test # test: dscr_inherit_exec_test # tags: git_version:unknown # Parent DSCR 1 was not inherited over exec (kernel value) # Child didn't exit cleanly # failure: dscr_inherit_exec_test not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888332/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
** Description changed: + [Impact] + Code that touches DSCR user MSR does not set dscr_inherit, which breaks DSCR restore doing context switches and inheritance when forking. DSCR is used to control cache hinting. This is caused by lack of kernel interrupt when the DSCR user MSR is written, which is controlled by FSCR which would otherwise cause a facility unavailable interrupt. + + [Test case] + apt-get source linux + cd linux-5.4.0/tools/testing/tools/selftests/powerpc/ + make -j 32 + make -C dscr run_tests + make -C ptrace run_tests + make -C tm run_tests + + Look up for "not ok" versus "ok", specially for dscr_inherit_exec_test, + ptrace-tar and tm-resched-tar. + + [Potential regression] + Manipulating DSCR might break on different machines (with DTs containing + /cpus/ibm,powerpc-cpu-features, for example). Code that does so might crash because the facility unavailable interrupt handling might be not working correctly. + + + Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node) - # selftests: powerpc/dscr: dscr_inherit_exec_test - # test: dscr_inherit_exec_test - # tags: git_version:unknown - # Parent DSCR 1 was not inherited over exec (kernel value) - # Child didn't exit cleanly - # failure: dscr_inherit_exec_test - not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 + # selftests: powerpc/dscr: dscr_inherit_exec_test + # test: dscr_inherit_exec_test + # tags: git_version:unknown + # Parent DSCR 1 was not inherited over exec (kernel value) + # Child didn't exit cleanly + # failure: dscr_inherit_exec_test + not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888332 Title: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: Triaged Status in linux source package in Eoan: Won't Fix Status in linux source package in Focal: In Progress Bug description: [Impact] Code that touches DSCR user MSR does not set dscr_inherit, which breaks DSCR restore doing context switches and inheritance when forking. DSCR is used to control cache hinting. This is caused by lack of kernel interrupt when the DSCR user MSR is written, which is controlled by FSCR which would otherwise cause a facility unavailable interrupt. [Test case] apt-get source linux cd linux-5.4.0/tools/testing/tools/selftests/powerpc/ make -j 32 make -C dscr run_tests make -C ptrace run_tests make -C tm run_tests Look up for "not ok" versus "ok", specially for dscr_inherit_exec_test, ptrace-tar and tm-resched-tar. [Potential regression] Manipulating DSCR might break on different machines (with DTs containing /cpus/ibm,powerpc-cpu-features, for example). Code that does so might crash because the facility unavailable interrupt handling might be not working correctly. Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node) # selftests: powerpc/dscr: dscr_inherit_exec_test # test: dscr_inherit_exec_test # tags: git_version:unknown # Parent DSCR 1 was not inherited over exec (kernel value) # Child didn't exit cleanly # failure: dscr_inherit_exec_test not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888332/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
Apparently, cherry-picking 0828137e8f16721842468e33df0460044a0c588b
("powerpc/64s: Don't init FSCR_DSCR in __init_FSCR()") fixes the issue.
Which explains why 5.8 does not show the problem.
Building a kernel with that patch applied so I can test it.
Cascardo.
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https://bugs.launchpad.net/bugs/1888332
Title:
[Potential Regression] dscr_inherit_exec_test from powerpc in
ubuntu_kernel_selftests failed on B/E/F
Status in linux package in Ubuntu:
Invalid
Status in linux source package in Bionic:
Triaged
Status in linux source package in Eoan:
Won't Fix
Status in linux source package in Focal:
In Progress
Bug description:
[Impact]
Code that touches DSCR user MSR does not set dscr_inherit, which breaks DSCR
restore doing context switches and inheritance when forking. DSCR is used to
control cache hinting. This is caused by lack of kernel interrupt when the DSCR
user MSR is written, which is controlled by FSCR which would otherwise cause a
facility unavailable interrupt.
[Test case]
apt-get source linux
cd linux-5.4.0/tools/testing/tools/selftests/powerpc/
make -j 32
make -C dscr run_tests
make -C ptrace run_tests
make -C tm run_tests
Look up for "not ok" versus "ok", specially for
dscr_inherit_exec_test, ptrace-tar and tm-resched-tar.
[Potential regression]
Manipulating DSCR might break on different machines (with DTs containing
/cpus/ibm,powerpc-cpu-features, for example). Code that does so might crash
because the facility unavailable interrupt handling might be not working
correctly.
Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node)
# selftests: powerpc/dscr: dscr_inherit_exec_test
# test: dscr_inherit_exec_test
# tags: git_version:unknown
# Parent DSCR 1 was not inherited over exec (kernel value)
# Child didn't exit cleanly
# failure: dscr_inherit_exec_test
not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1
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[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
** Changed in: linux (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888332 Title: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: Triaged Status in linux source package in Eoan: Won't Fix Status in linux source package in Focal: In Progress Bug description: Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node) # selftests: powerpc/dscr: dscr_inherit_exec_test # test: dscr_inherit_exec_test # tags: git_version:unknown # Parent DSCR 1 was not inherited over exec (kernel value) # Child didn't exit cleanly # failure: dscr_inherit_exec_test not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888332/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
** Also affects: ubuntu-kernel-tests/trunk Importance: Undecided Status: New ** No longer affects: ubuntu-kernel-tests ** No longer affects: ubuntu-kernel-tests/trunk ** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Focal) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Focal) Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo) ** Changed in: linux (Ubuntu Bionic) Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo) ** Changed in: linux (Ubuntu Focal) Status: New => In Progress ** Changed in: linux (Ubuntu Bionic) Status: New => Triaged -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888332 Title: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: Triaged Status in linux source package in Eoan: Won't Fix Status in linux source package in Focal: In Progress Bug description: Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node) # selftests: powerpc/dscr: dscr_inherit_exec_test # test: dscr_inherit_exec_test # tags: git_version:unknown # Parent DSCR 1 was not inherited over exec (kernel value) # Child didn't exit cleanly # failure: dscr_inherit_exec_test not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888332/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
This test failure is caused by the kernel not setting dscr_inherit when
the user dscr MSR is written to. Which is caused by FSCR not raising a
facility unavailable interrupt. Which is ironic as one of the other
patches that is backported is 993e3d96fd08c3ebf7566e43be9b8cd622063e6d
("powerpc/64s: Don't let DT CPU features set FSCR_DSCR"), which should
prevent this situation.
The reason dscr_inherit_test does not fail is because it writes to the
kernel MSR first. Changing dscr_inherit_exec_test to do the same, it
passes.
Testing 5.8 shows that it's fixed somehow, though I haven't found the
exact commit that would fix this. Reverting
912c0a7f2b5daa3cbb2bc10f303981e493de73bd ("powerpc/64s: Save FSCR to
init_task.thread.fscr after feature init") seems reasonable here.
But failing to inherit dscr would cause cache performance regressions
that are hard to justify respining the kernel for.
Cascardo.
** Changed in: linux (Ubuntu Eoan)
Status: Confirmed => Won't Fix
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https://bugs.launchpad.net/bugs/1888332
Title:
[Potential Regression] dscr_inherit_exec_test from powerpc in
ubuntu_kernel_selftests failed on B/E/F
Status in ubuntu-kernel-tests:
New
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Eoan:
Won't Fix
Bug description:
Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node)
# selftests: powerpc/dscr: dscr_inherit_exec_test
# test: dscr_inherit_exec_test
# tags: git_version:unknown
# Parent DSCR 1 was not inherited over exec (kernel value)
# Child didn't exit cleanly
# failure: dscr_inherit_exec_test
not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1
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[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
** Changed in: linux (Ubuntu Eoan) Status: Incomplete => Confirmed ** Changed in: linux (Ubuntu Eoan) Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888332 Title: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Incomplete Status in linux source package in Eoan: Confirmed Bug description: Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node) # selftests: powerpc/dscr: dscr_inherit_exec_test # test: dscr_inherit_exec_test # tags: git_version:unknown # Parent DSCR 1 was not inherited over exec (kernel value) # Child didn't exit cleanly # failure: dscr_inherit_exec_test not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1888332/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
A bisect for arch/powerpc/ shows this is the first bad commit on 4.15:
$ git bisect bad
7d10952e8a56f87a53fc57594078555a9dfd4a07 is the first bad commit
commit 7d10952e8a56f87a53fc57594078555a9dfd4a07
Author: Michael Ellerman
Date: Thu May 28 00:58:42 2020 +1000
powerpc/64s: Save FSCR to init_task.thread.fscr after feature init
BugLink: https://bugs.launchpad.net/bugs/1885176
commit 912c0a7f2b5daa3cbb2bc10f303981e493de73bd upstream.
At boot the FSCR is initialised via one of two paths. On most systems
it's set to a hard coded value in __init_FSCR().
On newer skiboot systems we use the device tree CPU features binding,
where firmware can tell Linux what bits to set in FSCR (and HFSCR).
In both cases the value that's configured at boot is not propagated
into the init_task.thread.fscr value prior to the initial fork of init
(pid 1), which means the value is not used by any processes other than
swapper (the idle task).
For the __init_FSCR() case this is OK, because the value in
init_task.thread.fscr is initialised to something sensible. However it
does mean that the value set in __init_FSCR() is not used other than
for swapper, which is odd and confusing.
The bigger problem is for the device tree CPU features case it
prevents firmware from setting (or clearing) FSCR bits for use by user
space. This means all existing kernels can not have features
enabled/disabled by firmware if those features require
setting/clearing FSCR bits.
We can handle both cases by saving the FSCR value into
init_task.thread.fscr after we have initialised it at boot. This fixes
the bug for device tree CPU features, and will allow us to simplify
the initialisation for the __init_FSCR() case in a future patch.
Fixes: 5a61ef74f269 ("powerpc/64s: Support new device tree binding for
discovering CPU features")
Cc: sta...@vger.kernel.org # v4.12+
Signed-off-by: Michael Ellerman
Link: https://lore.kernel.org/r/20200527145843.2761782-3-...@ellerman.id.au
Signed-off-by: Greg Kroah-Hartman
Signed-off-by: Kamal Mostafa
Signed-off-by: Khalid Elmously
:04 04 9c654d310ed9b7c4a1cf16620d120ec93624eda3
05b34a61190e63ccde3b7d02e2183dc64b32c812 M arch
$ git bisect log
git bisect start '--' 'arch/powerpc/'
\# bad: [f4daf25f7f8608d1c14c85ea0b73c9e1e1eb2dba] UBUNTU: Ubuntu-4.15.0-114.115
git bisect bad f4daf25f7f8608d1c14c85ea0b73c9e1e1eb2dba
\# good: [495149ddc61a5997857fda041ccd4c81cac46e00] UBUNTU:
Ubuntu-4.15.0-112.113
git bisect good 495149ddc61a5997857fda041ccd4c81cac46e00
\# bad: [07ad1246146fa49430d2455bd45db1c8da4d521c] powerpc/perf/hv-24x7: Fix
inconsistent output values incase multiple hv-24x7 events run
git bisect bad 07ad1246146fa49430d2455bd45db1c8da4d521c
\# good: [f30471f4138df69bd4585d91c1f31a282daa41e7] powerpc/64s: Don't let DT
CPU features set FSCR_DSCR
git bisect good f30471f4138df69bd4585d91c1f31a282daa41e7
\# bad: [0e198dfae237e9a9654d87b7c6df12146feaec26] sched/core: Fix illegal RCU
from offline CPUs
git bisect bad 0e198dfae237e9a9654d87b7c6df12146feaec26
\# bad: [7d10952e8a56f87a53fc57594078555a9dfd4a07] powerpc/64s: Save FSCR to
init_task.thread.fscr after feature init
git bisect bad 7d10952e8a56f87a53fc57594078555a9dfd4a07
\# first bad commit: [7d10952e8a56f87a53fc57594078555a9dfd4a07] powerpc/64s:
Save FSCR to init_task.thread.fscr after feature init
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https://bugs.launchpad.net/bugs/1888332
Title:
[Potential Regression] dscr_inherit_exec_test from powerpc in
ubuntu_kernel_selftests failed on B/E/F
Status in ubuntu-kernel-tests:
New
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Eoan:
Incomplete
Bug description:
Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node)
# selftests: powerpc/dscr: dscr_inherit_exec_test
# test: dscr_inherit_exec_test
# tags: git_version:unknown
# Parent DSCR 1 was not inherited over exec (kernel value)
# Child didn't exit cleanly
# failure: dscr_inherit_exec_test
not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1
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[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
Note for Bionic P9, this test didn't fail on node baltar. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888332 Title: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Incomplete Status in linux source package in Eoan: Incomplete Bug description: Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node) # selftests: powerpc/dscr: dscr_inherit_exec_test # test: dscr_inherit_exec_test # tags: git_version:unknown # Parent DSCR 1 was not inherited over exec (kernel value) # Child didn't exit cleanly # failure: dscr_inherit_exec_test not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1888332/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1888332] Re: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F
On Bionic P8, I can reproduce this issue against proposed kernel (4.15.0-114.115) with source code in 4.15.0-112. Indicating this might be a kernel issue instead of a test case issue. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1888332 Title: [Potential Regression] dscr_inherit_exec_test from powerpc in ubuntu_kernel_selftests failed on B/E/F Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Incomplete Status in linux source package in Eoan: Incomplete Bug description: Issue found on 5.3.0-64.58 with P8 node modoc (passed with P9 node) # selftests: powerpc/dscr: dscr_inherit_exec_test # test: dscr_inherit_exec_test # tags: git_version:unknown # Parent DSCR 1 was not inherited over exec (kernel value) # Child didn't exit cleanly # failure: dscr_inherit_exec_test not ok 5 selftests: powerpc/dscr: dscr_inherit_exec_test # exit=1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1888332/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
