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PSBM-93349
ploop: potential data corruption due to a race between 'prepare_merge' and 'submit_alloc' operations.
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PSBM-93675
vzstat shows incorrect per-CT scheduling latency (MLAT).
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PSBM-93713
High order page allocations were made in neigh_probe() in certain cases.
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PSBM-93672
High order page allocations were triggered by CRIU while restoring TCP sockets.
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VSTOR-21390
Network performance issues due to the usage of pfmemalloc reserves.
It was discovered that network drivers could allocate memory for the socket buffers from pfmemalloc memory reserves, even when it was unnecessary. As a result, the network packets were dropped by sk_filter_trim_cap() causing performance issues.
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PSBM-93047
fuse_kio_pcs: kernel crash in process_pcs_init_reply() caused by a double free.
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PSBM-93479
fuse_kio_pcs: kernel crash in kpcs_kill_requests().
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PSBM-93052
skb drops due to the usage of pfmemalloc reserves were difficult to debug.
Additional diagnostics was introduced to make it easier to detect and analyze skb drops due to the usage of pfmemalloc reserves.
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PSBM-93016
KVM did not update CPUID bits OSXSAVE and OSPKE in some cases.
It was discovered that CPUID bits OSXSAVE and OSPKE were not updated properly by KVM when the guest system rebooted. As a result, the guest system could crash.
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PSBM-92132
The per-container limit on the network interfaces was too low for Docker in some cases.
It was discovered that Docker running inside a Virtuozzo container could hit the limit on the network interfaces (256) when it tried to start 50+ its containers. This fix allows changing that limit for the running containers and increases the default limit to 1024.
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PSBM-92064
txqueuelen could not be changed via SIOCSIFTXQLEN ioctl on the host.
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PSBM-91819
Kernel crash in ext4_clear_inode().
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PSBM-91566
A large tarball with a lot of small files can fail to unpack inside a container if kmem limit is set.
It was found that unpacking a large tarball with a lot of small files could fail inside a container. This could happen because kmem limit was hit prematurely, while reclaimable memory was still available.
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PSBM-91598
sr_mod: kernel crash in sr_block_revalidate_disk().