Include Infiniband Peer Memory interface

Bug #1923104 reported by dann frazier
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
dann frazier

Bug Description

The peer_memory_client scheme allows a driver to register with the ib_umem system that it has the ability to understand user virtual address ranges that are not compatible with get_user_pages(). For instance VMAs created with io_remap_pfn_range(), or other driver special VMA.

For ranges the interface understands it can provide a DMA mapped sg_table for use by the ib_umem, allowing user virtual ranges that cannot be supported by get_user_pages() to be used as umems for RDMA.

This is designed to preserve the kABI, no functions or structures are changed, only new symbols are added:


And a bitfield in struct ib_umem uses more bits.

This interface is compatible with the two out of tree GPU drivers:

CVE References

Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Missing required logs.

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1923104

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
dann frazier (dannf)
Changed in linux (Ubuntu):
status: Incomplete → In Progress
assignee: nobody → dann frazier (dannf)
Revision history for this message
Launchpad Janitor (janitor) wrote :
Download full text (37.7 KiB)

This bug was fixed in the package linux - 5.11.0-14.15

linux (5.11.0-14.15) hirsute; urgency=medium

  * hirsute/linux: 5.11.0-14.15 -proposed tracker (LP: #1923103)

  * Packaging resync (LP: #1786013)
    - update dkms package versions

  * Include Infiniband Peer Memory interface (LP: #1923104)
    - SAUCE: RDMA/core: Introduce peer memory interface

  * Hirsute update: v5.11.12 upstream stable release (LP: #1923069)
    - arm64: mm: correct the inside linear map range during hotplug check
    - virtiofs: Fail dax mount if device does not support it
    - ext4: shrink race window in ext4_should_retry_alloc()
    - ext4: fix bh ref count on error paths
    - fs: nfsd: fix kconfig dependency warning for NFSD_V4
    - rpc: fix NULL dereference on kmalloc failure
    - iomap: Fix negative assignment to unsigned sis->pages in
    - ASoC: rt1015: fix i2c communication error
    - ASoC: rt5640: Fix dac- and adc- vol-tlv values being off by a factor of 10
    - ASoC: rt5651: Fix dac- and adc- vol-tlv values being off by a factor of 10
    - ASoC: sgtl5000: set DAP_AVC_CTRL register to correct default value on probe
    - ASoC: es8316: Simplify adc_pga_gain_tlv table
    - ASoC: soc-core: Prevent warning if no DMI table is present
    - ASoC: cs42l42: Fix Bitclock polarity inversion
    - ASoC: cs42l42: Fix channel width support
    - ASoC: cs42l42: Fix mixer volume control
    - ASoC: cs42l42: Always wait at least 3ms after reset
    - NFSD: fix error handling in NFSv4.0 callbacks
    - ASoC: mediatek: mt8192: fix tdm out data is valid on rising edge
    - kernel: freezer should treat PF_IO_WORKER like PF_KTHREAD for freezing
    - vhost: Fix vhost_vq_reset()
    - io_uring: fix ->flags races by linked timeouts
    - io_uring: halt SQO submission on ctx exit
    - scsi: st: Fix a use after free in st_open()
    - scsi: qla2xxx: Fix broken #endif placement
    - staging: comedi: cb_pcidas: fix request_irq() warn
    - staging: comedi: cb_pcidas64: fix request_irq() warn
    - ASoC: rt5659: Update MCLK rate in set_sysclk()
    - ASoC: rt711: add snd_soc_component remove callback
    - thermal/core: Add NULL pointer check before using cooling device stats
    - locking/ww_mutex: Simplify use_ww_ctx & ww_ctx handling
    - locking/ww_mutex: Fix acquire/release imbalance in
    - nvmet-tcp: fix kmap leak when data digest in use
    - io_uring: imply MSG_NOSIGNAL for send[msg]()/recv[msg]() calls
    - Revert "PM: ACPI: reboot: Use S5 for reboot"
    - nouveau: Skip unvailable ttm page entries
    - static_call: Align static_call_is_init() patching condition
    - ext4: do not iput inode under running transaction in ext4_rename()
    - io_uring: call req_set_fail_links() on short send[msg]()/recv[msg]() with
    - net: mvpp2: fix interrupt mask/unmask skip condition
    - mptcp: deliver ssk errors to msk
    - mptcp: fix poll after shutdown
    - mptcp: init mptcp request socket earlier
    - mptcp: add a missing retransmission timer scheduling
    - flow_dissector: fix TTL and TOS dissection on IPv4 fragments
    - mptcp: fix DATA_FIN processing f...

Changed in linux (Ubuntu):
status: In Progress → Fix Released
dann frazier (dannf)
Changed in linux (Ubuntu Focal):
status: New → Triaged
assignee: nobody → dann frazier (dannf)
dann frazier (dannf)
Changed in linux (Ubuntu Focal):
assignee: dann frazier (dannf) → nobody
Stefan Bader (smb)
Changed in linux (Ubuntu Focal):
importance: Undecided → Medium
Changed in linux (Ubuntu Focal):
status: Triaged → Fix Committed
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the linux/5.4.0-97.110 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 for documentation how to enable and use -proposed. Thank you!

tags: added: verification-needed-focal
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