Bug#947819: regression: iwlwifi hangs kernel completely sometimes
Package: src:linux Version: 4.19.67-2+deb10u2 Severity: important Dear Maintainer, my Intel Centrino 6205 in my Thinkpad T430 sometimes hangs the hole system with Linux 4.19. I *think* it always related to the hardware kill switch and reloading the driver afterwards, but I am not completely sure since my "analysis" was done on several lock up occasions over the period of a few months. I cannot reproduce it effectively but it has incurred data loss thus I have set the elevated importance in this bug report. The reason why I tinker with the kill switch and/or the module at all is that auto-reconnecting (with nm-manager) does not work consistently. Both, the non-working reconnect and the lock ups, are a regression to Debian 9 stretch where everything worked flawlessly. I have attached some kernel log snippets that I was able to gather that show some warnings related to iwlwifi but I am not 100% sure they are actually related to the lock ups. Since it's very hard to reproduce and it is quite annoying I will now switch to Buster's backport kernel (5.3) and see if that helps. KR -- Package-specific info: ** Version: Linux version 4.19.0-6-amd64 (debian-kernel@lists.debian.org) (gcc version 8.3.0 (Debian 8.3.0-6)) #1 SMP Debian 4.19.67-2+deb10u2 (2019-11-11) ** Command line: BOOT_IMAGE=/boot/vmlinuz-4.19.0-6-amd64 root=/dev/mapper/vg-root ro quiet ** Tainted: OE (12288) * Out-of-tree module has been loaded. * Unsigned module has been loaded. ** Model information sys_vendor: LENOVO product_name: 2349PT4 product_version: ThinkPad T430 chassis_vendor: LENOVO chassis_version: Not Available bios_vendor: LENOVO bios_version: G1ETB7WW (2.77 ) board_vendor: LENOVO board_name: 2349PT4 board_version: No DPK ** Loaded modules: iwldvm mac80211 iwlwifi cfg80211 btrfs zstd_compress zstd_decompress xxhash ufs qnx4 hfsplus hfs minix vfat msdos fat jfs xfs ctr ccm rfcomm fuse pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) cmac cpufreq_userspace vboxdrv(OE) cpufreq_conservative cpufreq_powersave bnep binfmt_misc btusb btrtl btbcm btintel uvcvideo bluetooth videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev drbg ansi_cprng ecdh_generic media intel_rapl msr arc4 snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel mei_wdt snd_hda_codec_realtek snd_hda_codec_generic kvm snd_hda_intel irqbypass intel_cstate snd_hda_codec intel_uncore snd_hda_core snd_hwdep intel_rapl_perf pcspkr serio_raw wmi_bmof sg snd_pcm iTCO_wdt iTCO_vendor_support thinkpad_acpi snd_timer nvram tpm_tis tpm_tis_core snd mei_me tpm mei pcc_cpufreq soundcore rfkill ac battery rng_core evdev parport_pc ppdev lp parport sunrpc ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 fscrypto ecb algif_skcipher af_alg dm_crypt dm_mod raid10 raid1 raid0 multipath linear raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c crc32c_generic md_mod sd_mod crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel pcbc i915 ahci libahci aesni_intel libata aes_x86_64 crypto_simd cryptd glue_helper psmouse scsi_mod i2c_i801 sdhci_pci xhci_pci i2c_algo_bit cqhci xhci_hcd drm_kms_helper sdhci lpc_ich mmc_core ehci_pci ehci_hcd drm e1000e usbcore thermal usb_common wmi video button ** PCI devices: 00:00.0 Host bridge [0600]: Intel Corporation 3rd Gen Core processor DRAM Controller [8086:0154] (rev 09) Subsystem: Lenovo 3rd Gen Core processor DRAM Controller [17aa:21f3] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- SERR- Kernel driver in use: ivb_uncore 00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo 3rd Gen Core processor Graphics Controller [17aa:21f3] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- SERR- Kernel driver in use: i915 Kernel modules: i915 00:14.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller [8086:1e31] (rev 04) (prog-if 30 [XHCI]) Subsystem: Lenovo 7 Series/C210 Series Chipset Family USB xHCI Host Controller (ThinkPad T430) [17aa:21f3] Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Kernel driver in use: xhci_hcd Kernel modules: xhci_pci 00:16.0 Communication controller [0780]: Intel Corporation 7 Series/C216 Chipset Family MEI Controller #1 [8086:1e3a] (rev 04) Subsystem: Lenovo 7 Series/C216 Chipset Family MEI Controller [17aa:21f3] Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Bug#947801: linux-image-5.3.0-3-amd64: b44 module unable to dma to address
Package: src:linux Version: 5.3.15-1 Severity: normal Dear Maintainer, * What led up to the situation? Had been having lockup with swiotlb getting overloaded, added iommu=force, intel_iommu=on, swiotlb=noforce to fix. Have reduced the swiotlb lockup, but now get a freeze on system with the b44 DMA below * What exactly did you do (or not do) that was effective (or ineffective)? Attempting to figure out b44 parametrs to get DMA to work, searched with google on how to overcome DMA issues * What was the outcome of this action? no luck * What outcome did you expect instead? Reduce DMA issues, stop freezes of system -- Package-specific info: ** Version: Linux version 5.3.0-3-amd64 (debian-kernel@lists.debian.org) (gcc version 9.2.1 20191130 (Debian 9.2.1-21)) #1 SMP Debian 5.3.15-1 (2019-12-07) ** Command line: BOOT_IMAGE=/boot/vmlinuz-5.3.0-3-amd64 root=UUID=f0a976b0-b2fa-418b-bdf5-d1666e3c05fb ro iommu=force intel_iommu=on swiotlb=noforce quiet ** Tainted: W (512) * Taint on warning. ** Kernel log: [ 321.030640] b44 :03:00.0: Cannot do DMA to address 0xc3e7f802 [ 325.970842] swiotlb_map: 681 callbacks suppressed [ 325.970851] b44 :03:00.0: Cannot do DMA to address 0xc3e7f802 [ 325.978046] b44 :03:00.0: Cannot do DMA to address 0xc3e78002 [ 325.985252] b44 :03:00.0: Cannot do DMA to address 0xc3e78002 [ 325.992504] b44 :03:00.0: Cannot do DMA to address 0xc3e7f802 [ 325.999757] b44 :03:00.0: Cannot do DMA to address 0xc3e7c002 [ 326.007003] b44 :03:00.0: Cannot do DMA to address 0xc3e7e002 [ 326.014247] b44 :03:00.0: Cannot do DMA to address 0xc3e7b002 [ 326.021437] b44 :03:00.0: Cannot do DMA to address 0xc3e79002 [ 326.028655] b44 :03:00.0: Cannot do DMA to address 0xc3e7d002 [ 326.035878] b44 :03:00.0: Cannot do DMA to address 0xc3e7e802 [ 330.976083] swiotlb_map: 681 callbacks suppressed [ 330.976092] b44 :03:00.0: Cannot do DMA to address 0xc3e7f802 [ 330.983295] b44 :03:00.0: Cannot do DMA to address 0xc3e7c002 [ 330.990535] b44 :03:00.0: Cannot do DMA to address 0xc3e7e002 [ 330.997751] b44 :03:00.0: Cannot do DMA to address 0xc3e7b002 [ 331.005015] b44 :03:00.0: Cannot do DMA to address 0xc3e79002 [ 331.012209] b44 :03:00.0: Cannot do DMA to address 0xc3e7d002 [ 331.019415] b44 :03:00.0: Cannot do DMA to address 0xc3e7e802 [ 331.026683] b44 :03:00.0: Cannot do DMA to address 0xc3e7c802 [ 331.033945] b44 :03:00.0: Cannot do DMA to address 0xc3e7c802 [ 331.041102] b44 :03:00.0: Cannot do DMA to address 0xc3e7e802 [ 335.981437] swiotlb_map: 681 callbacks suppressed [ 335.981446] b44 :03:00.0: Cannot do DMA to address 0xc3e7d002 [ 335.988568] b44 :03:00.0: Cannot do DMA to address 0xc3e7e802 [ 335.995770] b44 :03:00.0: Cannot do DMA to address 0xc3e7c802 [ 336.010229] b44 :03:00.0: Cannot do DMA to address 0xc3e7c802 [ 336.017460] b44 :03:00.0: Cannot do DMA to address 0xc3e7e802 [ 336.024678] b44 :03:00.0: Cannot do DMA to address 0xc3e7d002 [ 336.031882] b44 :03:00.0: Cannot do DMA to address 0xc3e79002 [ 336.039114] b44 :03:00.0: Cannot do DMA to address 0xc3e7b002 [ 336.046375] b44 :03:00.0: Cannot do DMA to address 0xc3e7e002 [ 336.053610] b44 :03:00.0: Cannot do DMA to address 0xc3e7c002 [ 340.986518] swiotlb_map: 680 callbacks suppressed [ 340.986527] b44 :03:00.0: Cannot do DMA to address 0xc3e7d002 [ 340.993788] b44 :03:00.0: Cannot do DMA to address 0xc3e79002 [ 341.000963] b44 :03:00.0: Cannot do DMA to address 0xc3e7b002 [ 341.008251] b44 :03:00.0: Cannot do DMA to address 0xc3e7e002 [ 341.015466] b44 :03:00.0: Cannot do DMA to address 0xc3e7c002 [ 341.022652] b44 :03:00.0: Cannot do DMA to address 0xc3e7f802 [ 341.029887] b44 :03:00.0: Cannot do DMA to address 0xc3e78002 [ 341.037124] b44 :03:00.0: Cannot do DMA to address 0xc3e78002 [ 341.044388] b44 :03:00.0: Cannot do DMA to address 0xc3e7f802 [ 341.051624] b44 :03:00.0: Cannot do DMA to address 0xc3e7c002 [ 345.991870] swiotlb_map: 681 callbacks suppressed [ 345.991880] b44 :03:00.0: Cannot do DMA to address 0xc3e78002 [ 345.999000] b44 :03:00.0: Cannot do DMA to address 0xc3e78002 [ 346.006239] b44 :03:00.0: Cannot do DMA to address 0xc3e7f802 [ 346.013465] b44 :03:00.0: Cannot do DMA to address 0xc3e7c002 [ 346.020694] b44 :03:00.0: Cannot do DMA to address 0xc3e7e002 [ 346.027896] b44 :03:00.0: Cannot do DMA to address 0xc3e7b002 [ 346.035155] b44 :03:00.0: Cannot do
Bug#867067: nfs-kernel-server: nfsdcltrack fails to init database
I have empirical reasons to believe that the fix for CVE-2019-3689 (cf. #940848) will take care of this bug as well.
Bug#947759: Configuration optimizations for the cloud variant
Source: linux Severity: wishlist A few requests for changes to the cloud configuration: - Please disable CONFIG_ACPI_BGRT; a cloud kernel doesn't need to spend time or code space looking for a boot logo that won't exist. - Please disable the CONFIG_CPU_SUP_* options for CPUs that no cloud provider uses. - Please disable CONFIG_GNSS_*, which won't be hooked up to a cloud server. - Please disable CONFIG_GTP for the same reason. - Please configure CONFIG_INPUT_MOUSEDEV as a module, not built-in, as most cloud servers won't have a mouse and probing for one takes time. - Please consider changing the default kernel compression to GZIP, which decompresses faster and thus boots faster. - Please change CONFIG_NET_MPLS_GSO from y to m (and consider doing this for the non-cloud kernel too); it doesn't need to be built into the kernel. - Please change CONFIG_NF_NAT_* and CONFIG_NF_MASQUERADE_* from y to m, as many systems won't need those modules and shouldn't need to load their code. - Please compile in the NVME driver and the EXT4 filesystem; this will allow many cloud systems to avoid using an initramfs at all, which substantially improves boot time. - Please disable CONFIG_NUMA_EMU, only used to create fake-NUMA systems for debugging. - Please disable CONFIG_PCIPCWATCHDOG, CONFIG_PPS, and CONFIG_RMI4_*, which won't appear on a cloud server. - Please enable CONFIG_SCHED_MC_PRIO (on both cloud and non-cloud kernels). - Please disable CONFIG_VFIO_PCI_VGA and CONFIG_VGA_SWITCHEROO, which won't appear on cloud.
