Changelog
linux (4.19.181-1) buster; urgency=medium
* New upstream stable update:
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.178
- HID: make arrays usage and value to be the same
- USB: quirks: sort quirk entries
- usb: quirks: add quirk to start video capture on ELMO L-12F document
camera reliable
- block: add helper for checking if queue is registered
- block: split .sysfs_lock into two locks
- block: fix race between switching elevator and removing queues
- block: don't release queue's sysfs lock during switching elevator
- NET: usb: qmi_wwan: Adding support for Cinterion MV31
- cifs: Set CIFS_MOUNT_USE_PREFIX_PATH flag on setting cifs_sb->prepath.
- jump_label/lockdep: Assert we hold the hotplug lock for _cpuslocked()
operations
- locking/static_key: Fix false positive warnings on concurrent dec/inc
- vmlinux.lds.h: add DWARF v5 sections
- [arm64] PCI: qcom: Use PHY_REFCLK_USE_PAD only for ipq8064
- bfq: Avoid false bfq queue merging
- ALSA: usb-audio: Fix PCM buffer allocation in non-vmalloc mode
- [mips*] vmlinux.lds.S: add missing PAGE_ALIGNED_DATA() section
- random: fix the RNDRESEEDCRNG ioctl
- [arm64] Bluetooth: btqcomsmd: Fix a resource leak in error handling
paths in the probe function
- Bluetooth: Fix initializing response id after clearing struct
- [armhf] dts: exynos: correct PMIC interrupt trigger level on Spring
- [armhf] dts: exynos: correct PMIC interrupt trigger level on Arndale Octa
- bpf: Avoid warning when re-casting __bpf_call_base into
__bpf_call_base_args
- [arm64] dts: allwinner: A64: properly connect USB PHY to port 0
- [arm64] dts: allwinner: A64: Limit MMC2 bus frequency to 150 MHz
- ACPICA: Fix exception code class checks
- usb: gadget: u_audio: Free requests only after callback
- Bluetooth: drop HCI device reference before return
- Bluetooth: Put HCI device if inquiry procedure interrupts
- [arm*] usb: dwc2: Do not update data length if it is 0 on inbound
transfers
- [arm*] usb: dwc2: Abort transaction after errors with unknown reason
- [arm*] usb: dwc2: Make "trimming xfer length" a debug message
- staging: rtl8723bs: wifi_regd.c: Fix incorrect number of regulatory
rules
- [armhf] dts: armada388-helios4: assign pinctrl to LEDs
- [armhf] dts: armada388-helios4: assign pinctrl to each fan
- bpf_lru_list: Read double-checked variable once without lock
- bnxt_en: reverse order of TX disable and carrier off
- xen/netback: fix spurious event detection for common event case
- mac80211: fix potential overflow when multiplying to u32 integers
- bpf: Fix bpf_fib_lookup helper MTU check for SKB ctx
- tcp: fix SO_RCVLOWAT related hangs under mem pressure
- cxgb4/chtls/cxgbit: Keeping the max ofld immediate data size same in
cxgb4 and ulds
- b43: N-PHY: Fix the update of coef for the PHY revision >= 3case
- [amd64,arm64] net: amd-xgbe: Reset the PHY rx data path when mailbox
command timeout
- [amd64,arm64] net: amd-xgbe: Fix NETDEV WATCHDOG transmit queue timeout
warning
- [amd64,arm64] net: amd-xgbe: Reset link when the link never comes back
- [amd64,arm64] net: amd-xgbe: Fix network fluctuations when using 1G
BELFUSE SFP
- [arm64,armhf] net: mvneta: Remove per-cpu queue mapping for Armada 3700
- [x86] drm/gma500: Fix error return code in psb_driver_load()
- [x86] gma500: clean up error handling in init
- [armhf] crypto: sun4i-ss - fix kmap usage
- [mips*] c-r4k: Fix section mismatch for loongson2_sc_init
- media: em28xx: Fix use-after-free in em28xx_alloc_urbs
- media: media/pci: Fix memleak in empress_init
- [x86] media: tm6000: Fix memleak in tm6000_start_stream
- media: lmedm04: Fix misuse of comma
- media: qm1d1c0042: fix error return code in qm1d1c0042_init()
- media: uvcvideo: Accept invalid bFormatIndex and bFrameIndex values
- f2fs: fix to avoid inconsistent quota data
- drm/amdgpu: Prevent shift wrapping in amdgpu_read_mask()
- [x86] Drivers: hv: vmbus: Avoid use-after-free in
vmbus_onoffer_rescind()
- btrfs: clarify error returns values in __load_free_space_cache
- crypto: ecdh_helper - Ensure 'len >= secret.len' in decode_key()
- fs/jfs: fix potential integer overflow on shift of a int
- jffs2: fix use after free in jffs2_sum_write_data()
- capabilities: Don't allow writing ambiguous v3 file capabilities
- [arm64,armhf] clk: meson: clk-pll: fix initializing the old rate
(fallback) for a PLL
- quota: Fix memory leak when handling corrupted quota file
- [arm64] clk: sunxi-ng: h6: Fix CEC clock
- HID: core: detect and skip invalid inputs to snto32()
- fdt: Properly handle "no-map" field in the memory region
- of/fdt: Make sure no-map does not remove already reserved regions
- RDMA/mlx5: Use the correct obj_id upon DEVX TIR creation
- [arm64] clk: sunxi-ng: h6: Fix clock divider range on some clocks
- [arm64,armhf] regulator: axp20x: Fix reference cout leak
- certs: Fix blacklist flag type confusion
- [armhf] regulator: s5m8767: Drop regulators OF node reference
- isofs: release buffer head before return
- IB/umad: Return EIO in case of when device disassociated
- IB/umad: Return EPOLLERR in case of when device disassociated
- [ppc64el] KVM: Make the VMX instruction emulation routines static
- [armel,armhf] 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+
cores
- [arm*] amba: Fix resource leak for drivers without .remove
- tracepoint: Do not fail unregistering a probe due to memory failure
- perf tools: Fix DSO filtering when not finding a map for a sampled
address
- RDMA/rxe: Fix coding error in rxe_recv.c
- RDMA/rxe: Correct skb on loopback path
- [powerpc*] pseries/dlpar: handle ibm, configure-connector delay status
- [amd64] spi: pxa2xx: Fix the controller numbering for Wildcat Point
- Input: sur40 - fix an error code in sur40_probe()
- perf intel-pt: Fix missing CYC processing in PSB
- Input: elo - fix an error code in elo_connect()
- [arm64,armhf] pwm: rockchip: rockchip_pwm_probe(): Remove superfluous
clk_unprepare()
- [x86] VMCI: Use set_page_dirty_lock() when unregistering guest memory
- PCI: Align checking of syscall user config accessors
- [arm64] drm/msm/dsi: Correct io_start for MSM8994 (20nm PHY)
- ext4: fix potential htree index checksum corruption
- i40e: Fix flow for IPv6 next header (extension header)
- i40e: Add zero-initialization of AQ command structures
- i40e: Fix overwriting flow control settings during driver loading
- i40e: Fix VFs not created
- i40e: Fix add TC filter for IPv6
- net/mlx4_core: Add missed mlx4_free_cmd_mailbox()
- vxlan: move debug check after netdev unregister
- ocfs2: fix a use after free on error
- mm/memory.c: fix potential pte_unmap_unlock pte error
- mm/hugetlb: fix potential double free in hugetlb_register_node() error
path
- r8169: fix jumbo packet handling on RTL8168e
- [arm64] Add missing ISB after invalidating TLB in __primary_switch
- mm/rmap: fix potential pte_unmap on an not mapped pte
- blk-settings: align max_sectors on "logical_block_size" boundary
- ACPI: property: Fix fwnode string properties matching
- HID: wacom: Ignore attempts to overwrite the touch_max value from HID
- Input: xpad - add support for PowerA Enhanced Wired Controller for Xbox
Series X|S
- Input: joydev - prevent potential read overflow in ioctl
- USB: serial: option: update interface mapping for ZTE P685M
- [arm64,armhf] usb: musb: Fix runtime PM race in musb_queue_resume_work
- [arm64,armhf] usb: dwc3: gadget: Fix setting of DEPCFG.bInterval_m1
- [arm64,armhf] usb: dwc3: gadget: Fix dep->interval for fullspeed
interrupt
- USB: serial: ftdi_sio: fix FTX sub-integer prescaler
- USB: serial: mos7840: fix error code in mos7840_write()
- USB: serial: mos7720: fix error code in mos7720_write()
- ALSA: hda/realtek: modify EAPD in the ALC886
- tpm_tis: Fix check_locality for correct locality acquisition
- tpm_tis: Clean up locality release
- KEYS: trusted: Fix migratable=1 failing
- btrfs: abort the transaction if we fail to inc ref in btrfs_copy_root
- btrfs: fix reloc root leak with 0 ref reloc roots on recovery
- btrfs: fix extent buffer leak on failure to copy root
- [arm64] crypto: arm64/sha - add missing module aliases
- [armhf] crypto: sun4i-ss - checking sg length is not sufficient
- [armhf] crypto: sun4i-ss - handle BigEndian for cipher
- seccomp: Add missing return in non-void function
- misc: rtsx: init of rts522a add OCP power off when no card is present
- [x86] drivers/misc/vmw_vmci: restrict too big queue size in
qp_host_alloc_queue
- staging: rtl8188eu: Add Edimax EW-7811UN V2 to device table
- [x86] reboot: Force all cpus to exit VMX root if VMX is supported
- floppy: reintroduce O_NDELAY fix
- [arm64] uprobe: Return EOPNOTSUPP for AARCH32 instruction probing
- [x86] watchdog: mei_wdt: request stop on unregister
- [arm64] mtd: spi-nor: hisi-sfc: Put child node np on error path
- fs/affs: release old buffer head on error path
- seq_file: document how per-entry resources are managed.
- [x86] fix seq_file iteration for pat/memtype.c
- hugetlb: fix copy_huge_page_from_user contig page struct assumption
- libnvdimm/dimm: Avoid race between probe and available_slots_show()
- [arm64] Extend workaround for erratum 1024718 to all versions of
Cortex-A55
- module: Ignore _GLOBAL_OFFSET_TABLE_ when warning for undefined symbols
- [armhf] mmc: sdhci-esdhc-imx: fix kernel panic when remove module
- [armhf] gpio: pcf857x: Fix missing first interrupt
- printk: fix deadlock when kernel panic
- [x86] cpufreq: intel_pstate: Get per-CPU max freq via
MSR_HWP_CAPABILITIES if available
- f2fs: fix out-of-repair __setattr_copy()
- gfs2: Don't skip dlm unlock if glock has an lvb
- dm: fix deadlock when swapping to encrypted device
- dm era: Recover committed writeset after crash
- dm era: Verify the data block size hasn't changed
- dm era: Fix bitset memory leaks
- dm era: Use correct value size in equality function of writeset tree
- dm era: Reinitialize bitset cache before digesting a new writeset
- dm era: only resize metadata in preresume
- icmp: introduce helper for nat'd source address in network device
context
- icmp: allow icmpv6_ndo_send to work with CONFIG_IPV6=n
- gtp: use icmp_ndo_send helper
- xfrm: interface: use icmp_ndo_send helper
- ipv6: icmp6: avoid indirect call for icmpv6_send()
- ipv6: silence compilation warning for non-IPV6 builds
- net: icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending
- dm era: Update in-core bitset after committing the metadata
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.179
- net: usb: qmi_wwan: support ZTE P685M modem
- hugetlb: fix update_and_free_page contig page struct assumption
- drm/virtio: use kvmalloc for large allocations
- [s390x] virtio/s390: implement virtio-ccw revision 2 correctly
- [arm64] module: set plt* section addresses to 0x0
- [arm64] Avoid redundant type conversions in xchg() and cmpxchg()
- [arm64] cmpxchg: Use "K" instead of "L" for ll/sc immediate constraint
- [arm64] Use correct ll/sc atomic constraints
- JFS: more checks for invalid superblock
- udlfb: Fix memory leak in dlfb_usb_probe
- media: mceusb: sanity check for prescaler value
- xfs: Fix assert failure in xfs_setattr_size()
- net: fix up truesize of cloned skb in skb_prepare_for_shift()
- mm/hugetlb.c: fix unnecessary address expansion of pmd sharing
- net: bridge: use switchdev for port flags set through sysfs too
- dt-bindings: net: btusb: DT fix s/interrupt-name/interrupt-names/
- rsi: Fix TX EAPOL packet handling against iwlwifi AP
- rsi: Move card interrupt handling to RX thread
- [x86] reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk
- vt/consolemap: do font sum unsigned
- [arm64,armhf] wlcore: Fix command execute failure 19 for wl12xx
- Bluetooth: hci_h5: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for btrtl
- pktgen: fix misuse of BUG_ON() in pktgen_thread_worker()
- ath10k: fix wmi mgmt tx queue full due to race condition
- [x86] build: Treat R_386_PLT32 relocation as R_386_PC32
- Bluetooth: Fix null pointer dereference in amp_read_loc_assoc_final_data
- crypto: tcrypt - avoid signed overflow in byte count
- PCI: Add a REBAR size quirk for Sapphire RX 5600 XT Pulse
- media: uvcvideo: Allow entities with no pads
- f2fs: handle unallocated section and zone on pinned/atgc
- f2fs: fix to set/clear I_LINKABLE under i_lock
- btrfs: fix error handling in commit_fs_roots
- [x86] ASoC: Intel: bytcr_rt5640: Add quirk for the Estar Beauty HD MID
7316R tablet
- [x86] ASoC: Intel: bytcr_rt5640: Add quirk for the Voyo Winpad A15
tablet
- [x86] ASoC: Intel: bytcr_rt5640: Add quirk for the Acer One S1002 tablet
- scsi: iscsi: Restrict sessions and handles to admin capabilities
(CVE-2021-27363, CVE-2021-27364)
- sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output
- scsi: iscsi: Ensure sysfs attributes are limited to PAGE_SIZE
(CVE-2021-27365)
- scsi: iscsi: Verify lengths on passthrough PDUs (CVE-2021-27365)
- Xen/gnttab: handle p2m update errors on a per-slot basis
(CVE-2021-28038)
- xen-netback: respect gnttab_map_refs()'s return value (CVE-2021-28038)
- zsmalloc: account the number of compacted pages correctly
- swap: fix swapfile read/write offset
- media: v4l: ioctl: Fix memory leak in video_usercopy
- ALSA: hda/realtek: Add quirk for Clevo NH55RZQ
- ALSA: hda/realtek: Apply dual codec quirks for MSI Godlike X570 board
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.180
- btrfs: raid56: simplify tracking of Q stripe presence
- btrfs: fix raid6 qstripe kmap
- btrfs: validate qgroup inherit for SNAP_CREATE_V2 ioctl
- btrfs: free correct amount of space in
btrfs_delayed_inode_reserve_metadata
- btrfs: unlock extents in btrfs_zero_range in case of quota reservation
errors
- PM: runtime: Update device status before letting suppliers suspend
- dm bufio: subtract the number of initial sectors in
dm_bufio_get_device_size
- drm/amdgpu: fix parameter error of RREG32_PCIE() in amdgpu_regs_pcie
- usbip: tools: fix build error for multiple definition
- Revert "zram: close udev startup race condition as default groups"
- block: genhd: add 'groups' argument to device_add_disk
- nvme: register ns_id attributes as default sysfs groups
- aoe: register default groups with device_add_disk()
- zram: register default groups with device_add_disk()
- virtio-blk: modernize sysfs attribute creation
- ALSA: ctxfi: cthw20k2: fix mask on conf to allow 4 bits
- rsxx: Return -EFAULT if copy_to_user() fails
- r8169: fix resuming from suspend on RTL8105e if machine runs on battery
- [arm64,armhf] net: dsa: add GRO support via gro_cells
- dm table: fix iterate_devices based device capability checks
- dm table: fix DAX iterate_devices based device capability checks
- dm table: fix zoned iterate_devices based device capability checks
- [amd64] iommu/amd: Fix sleeping in atomic in increase_address_space()
- mwifiex: pcie: skip cancel_work_sync() on reset failure path
- [x86] platform/x86: acer-wmi: Cleanup ACER_CAP_FOO defines
- [x86] platform/x86: acer-wmi: Cleanup accelerometer device handling
- [x86] platform/x86: acer-wmi: Add new force_caps module parameter
- [x86] platform/x86: acer-wmi: Add ACER_CAP_SET_FUNCTION_MODE capability
flag
- [x86] platform/x86: acer-wmi: Add support for SW_TABLET_MODE on Switch
devices
- [x86] platform/x86: acer-wmi: Add ACER_CAP_KBD_DOCK quirk for the Aspire
Switch 10E SW3-016
- HID: mf: add support for 0079:1846 Mayflash/Dragonrise USB Gamecube
Adapter
- media: cx23885: add more quirks for reset DMA on some AMD IOMMU
- [x86] ASoC: Intel: bytcr_rt5640: Add quirk for ARCHOS Cesium 140
- PCI: Add function 1 DMA alias quirk for Marvell 9215 SATA controller
- misc: eeprom_93xx46: Add quirk to support Microchip 93LC46B eeprom
- [arm64] drm/msm/a5xx: Remove overwriting A5XX_PC_DBG_ECO_CNTL register
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.181
- uapi: nfnetlink_cthelper.h: fix userspace compilation error
- ethernet: alx: fix order of calls on resume (Closes: #983595)
- ath9k: fix transmitting to stations in dynamic SMPS mode
- net: Fix gro aggregation for udp encaps with zero csum
- net: Introduce parse_protocol header_ops callback
- can: skb: can_skb_set_owner(): fix ref counting if socket was closed
before setting skb ownership
- [armhf] can: flexcan: assert FRZ bit in flexcan_chip_freeze()
- [armhf] can: flexcan: enable RX FIFO after FRZ/HALT valid
- netfilter: x_tables: gpf inside xt_find_revision()
- mt76: dma: do not report truncated frames to mac80211
- tcp: annotate tp->copied_seq lockless reads
- tcp: annotate tp->write_seq lockless reads
- tcp: add sanity tests to TCP_QUEUE_SEQ
- cifs: return proper error code in statfs(2)
- scripts/recordmcount.{c,pl}: support -ffunction-sections .text.* section
names
- Revert "mm, slub: consider rest of partial list if acquire_slab() fails"
- net: check if protocol extracted by virtio_net_hdr_set_proto is correct
- net: avoid infinite loop in mpls_gso_segment when mpls_hlen == 0
- net/mlx4_en: update moderation when config reset
- [arm64,armhf] net: stmmac: fix incorrect DMA channel intr enable setting
of EQoS v4.10
- net: sched: avoid duplicates in classes dump
- net: usb: qmi_wwan: allow qmimux add/del with master up
- [arm64,armhf] net: stmmac: stop each tx channel independently
- [arm64,armhf] net: stmmac: fix watchdog timeout during suspend/resume
stress test
- drm/compat: Clear bounce structures
- [arm64] drm: meson_drv add shutdown function
- media: usbtv: Fix deadlock on suspend
- net: phy: fix save wrong speed and duplex problem if autoneg is on
- udf: fix silent AED tagLocation corruption
- [powerpc*] pci: Add ppc_md.discover_phbs()
- [powerpc*] improve handling of unrecoverable system reset
- [powerpc*] perf: Record counter overflow always if SAMPLE_IP is unset
- [arm64] PCI: xgene-msi: Fix race in installing chained irq handler
- PCI: Fix pci_register_io_range() memory leak
- i40e: Fix memory leak in i40e_probe
- [s390x] smp: __smp_rescan_cpus() - move cpumask away from stack
- scsi: libiscsi: Fix iscsi_prep_scsi_cmd_pdu() error handling
- scsi: target: core: Add cmd length set before cmd complete
- scsi: target: core: Prevent underflow for service actions
- ALSA: usb: Add Plantronics C320-M USB ctrl msg delay quirk
- ALSA: hda/hdmi: Cancel pending works before suspend
- ALSA: hda: Drop the BATCH workaround for AMD controllers
- ALSA: hda: Avoid spurious unsol event handling during S3/S4
- ALSA: usb-audio: Fix "cannot get freq eq" errors on Dell AE515 sound bar
- ALSA: usb-audio: Apply the control quirk to Plantronics headsets
- Revert 95ebabde382c ("capabilities: Don't allow writing ambiguous v3 file
capabilities")
- [s390x] dasd: fix hanging DASD driver unbind
- [s390x] dasd: fix hanging IO request during DASD driver unbind
- mmc: core: Fix partition switch time for eMMC
- mmc: cqhci: Fix random crash when remove mmc module/card
- Goodix Fingerprint device is not a modem
- USB: gadget: u_ether: Fix a configfs return code
- usb: gadget: f_uac2: always increase endpoint max_packet_size by one audio
slot
- usb: gadget: f_uac1: stop playback on function disable
- [arm64] usb: dwc3: qcom: Honor wakeup enabled/disabled state
- USB: usblp: fix a hang in poll() if disconnected
- xhci: Improve detection of device initiated wake signal.
- usb: xhci: Fix ASMedia ASM1042A and ASM3242 DMA addressing
- USB: serial: io_edgeport: fix memory leak in edge_startup
- USB: serial: ch341: add new Product ID
- USB: serial: cp210x: add ID for Acuity Brands nLight Air Adapter
- USB: serial: cp210x: add some more GE USB IDs
- usbip: fix stub_dev to check for stream socket
- usbip: fix vhci_hcd to check for stream socket
- usbip: fix vudc to check for stream socket
- usbip: fix stub_dev usbip_sockfd_store() races leading to gpf
- usbip: fix vhci_hcd attach_store() races leading to gpf
- usbip: fix vudc usbip_sockfd_store races leading to gpf
- [x86] staging: rtl8192u: fix ->ssid overflow in r8192_wx_set_scan()
- staging: rtl8188eu: prevent ->ssid overflow in rtw_wx_set_scan()
(CVE-2021-28660)
- staging: rtl8712: unterminated string leads to read overflow
- staging: rtl8188eu: fix potential memory corruption in
rtw_check_beacon_data()
- staging: rtl8712: Fix possible buffer overflow in r8712_sitesurvey_cmd
- [x86] staging: rtl8192e: Fix possible buffer overflow in
_rtl92e_wx_set_scan
- [x86] staging: comedi: addi_apci_1032: Fix endian problem for COS sample
- [x86] staging: comedi: addi_apci_1500: Fix endian problem for command
sample
- [x86] staging: comedi: adv_pci1710: Fix endian problem for AI command data
- [i386] staging: comedi: das6402: Fix endian problem for AI command data
- [i386] staging: comedi: das800: Fix endian problem for AI command data
- [i386] staging: comedi: dmm32at: Fix endian problem for AI command data
- [x86] staging: comedi: me4000: Fix endian problem for AI command data
- [i386] staging: comedi: pcl711: Fix endian problem for AI command data
- [i386] staging: comedi: pcl818: Fix endian problem for AI command data
- NFSv4.2: fix return value of _nfs4_get_security_label()
- block: rsxx: fix error return code of rsxx_pci_probe()
- configfs: fix a use-after-free in __configfs_open_file
- hrtimer: Update softirq_expires_next correctly after
__hrtimer_get_next_event()
- stop_machine: mark helpers __always_inline
- include/linux/sched/mm.h: use rcu_dereference in in_vfork()
- [powerpc*] 64s: Fix instruction encoding for lis in ppc_function_entry()
- binfmt_misc: fix possible deadlock in bm_register_write
- [amd64] x86/unwind/orc: Disable KASAN checking in the ORC unwinder, part 2
- hwmon: (lm90) Fix max6658 sporadic wrong temperature reading
- [arm64] KVM: Fix exclusive limit for IPA size
- xen/events: reset affinity of 2-level event when tearing it down
- xen/events: don't unmask an event channel when an eoi is pending
- xen/events: avoid handling the same event on two cpus at the same time
[ Salvatore Bonaccorso ]
* Bump ABI to 16
* ext4: check journal inode extents more carefully (CVE-2021-3428)
* bpf: Prohibit alu ops for pointer types not defining ptr_limit
(CVE-2020-27170)
* bpf: Fix off-by-one for area size in creating mask to left
(CVE-2020-27171)
* bpf: Simplify alu_limit masking for pointer arithmetic
* bpf: Add sanity check for upper ptr_limit
-- Salvatore Bonaccorso <email address hidden> Fri, 19 Mar 2021 15:29:57 +0100
