readykernel-patch-131.10-107.0-1.vl7

Kernel Update Version:: 3.10.0-1062.12.1.vz7.131.10
Release Date:: 2022-03-02 08:28:02

PSBM-104387

nf_conntrack: potential kernel crash in netlink_has_listeners().
PSBM-104342

ext4: attempts to freeze the FS could hang in certain cases due to an unbalanced internal write counter.
PSBM-104086

netlink: performance issues due to direct memory reclaim in netlink_dump() and netlink_trim().
PSBM-103975

memcg: kernel could crash when memory was uncharged from a cgroup while the cgroup was going offline.

It was found that a race was possible between uncharging memory from a cgroup and making that cgroup offline. This could lead to premature destruction of the cgroup and could cause a kernel crash.
PSBM-104125

packet: packet_sk_charge() could try to charge zero memory, leading to a use-after-free in memcg subsystem.
PSBM-103864

memcg: potential use-after-free in the implementation of uncharge operations.
PSBM-102320

qxl: kernel crash in qxl_release_fence_buffer_objects().
VSTOR-33397

i40iw: kernel complains about failed RTNL assertion in i40iw_addr_resolve_neigh().
PSBM-103518

Slow memory allocations in nf_conntrack when a netns is created.

When a new netns is created, high-order page allocations can happen in nf_ct_alloc_hashtable(). If memory is fragmented, such allocations can become very slow due to memory reclaim, etc. This, in turn, could result in significant slowdowns on the node.
PSBM-102407

nfsd: memory corruption in nfsd4_lock().
PSBM-102573

Potential hard lockups in timer-related code: jiffies_lock could be held for a long time.
PSBM-102848

(enhancement) ploop: added interface to dump the cached BAT.

It was discovered that containers could get a broken on-disk BAT but have healthy in-kernel data in certain cases. To detect and fix such conditions, the means to dump the cached BAT were implemented in ploop. Note that, to make use of this enhancement, version 7.0.187.4 or newer of the userspace ploop tools is needed.
PSBM-102655

netfilter: kernel crash in the implementation of nf_tables due to use-after-free in dynamic operations.
PSBM-102363

A container with NFS server could force other such containers to use the older NFSv4 client tracker, which slows down NFS mounts.
PSBM-102478

ext4: potential kernel crash (general protection fault) in ext4_free_blocks().
VSTOR-32221

mpt2sas: scheduling while atomic in _scsih_io_done().

readykernel-patch-131.10-107.0-1.vl7

nf_conntrack: potential kernel crash in netlink_has_listeners().

ext4: attempts to freeze the FS could hang in certain cases due to an unbalanced internal write counter.

netlink: performance issues due to direct memory reclaim in netlink_dump() and netlink_trim().

memcg: kernel could crash when memory was uncharged from a cgroup while the cgroup was going offline.

packet: packet_sk_charge() could try to charge zero memory, leading to a use-after-free in memcg subsystem.

memcg: potential use-after-free in the implementation of uncharge operations.

qxl: kernel crash in qxl_release_fence_buffer_objects().

i40iw: kernel complains about failed RTNL assertion in i40iw_addr_resolve_neigh().

Slow memory allocations in nf_conntrack when a netns is created.

nfsd: memory corruption in nfsd4_lock().

Potential hard lockups in timer-related code: jiffies_lock could be held for a long time.

(enhancement) ploop: added interface to dump the cached BAT.

netfilter: kernel crash in the implementation of nf_tables due to use-after-free in dynamic operations.

A container with NFS server could force other such containers to use the older NFSv4 client tracker, which slows down NFS mounts.

ext4: potential kernel crash (general protection fault) in ext4_free_blocks().

mpt2sas: scheduling while atomic in _scsih_io_done().