Upstream information
Description
In the Linux kernel, the following vulnerability has been resolved:erofs: Fix detection of atomic context
Current check for atomic context is not sufficient as
z_erofs_decompressqueue_endio can be called under rcu lock
from blk_mq_flush_plug_list(). See the stacktrace [1]
In such case we should hand off the decompression work for async
processing rather than trying to do sync decompression in current
context. Patch fixes the detection by checking for
rcu_read_lock_any_held() and while at it use more appropriate
!in_task() check than in_atomic().
Background: Historically erofs would always schedule a kworker for
decompression which would incur the scheduling cost regardless of
the context. But z_erofs_decompressqueue_endio() may not always
be in atomic context and we could actually benefit from doing the
decompression in z_erofs_decompressqueue_endio() if we are in
thread context, for example when running with dm-verity.
This optimization was later added in patch [2] which has shown
improvement in performance benchmarks.
==============================================
[1] Problem stacktrace
[name:core&]BUG: sleeping function called from invalid context at kernel/locking/mutex.c:291
[name:core&]in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 1615, name: CpuMonitorServi
[name:core&]preempt_count: 0, expected: 0
[name:core&]RCU nest depth: 1, expected: 0
CPU: 7 PID: 1615 Comm: CpuMonitorServi Tainted: G S W OE 6.1.25-android14-5-maybe-dirty-mainline #1
Hardware name: MT6897 (DT)
Call trace:
dump_backtrace+0x108/0x15c
show_stack+0x20/0x30
dump_stack_lvl+0x6c/0x8c
dump_stack+0x20/0x48
__might_resched+0x1fc/0x308
__might_sleep+0x50/0x88
mutex_lock+0x2c/0x110
z_erofs_decompress_queue+0x11c/0xc10
z_erofs_decompress_kickoff+0x110/0x1a4
z_erofs_decompressqueue_endio+0x154/0x180
bio_endio+0x1b0/0x1d8
__dm_io_complete+0x22c/0x280
clone_endio+0xe4/0x280
bio_endio+0x1b0/0x1d8
blk_update_request+0x138/0x3a4
blk_mq_plug_issue_direct+0xd4/0x19c
blk_mq_flush_plug_list+0x2b0/0x354
__blk_flush_plug+0x110/0x160
blk_finish_plug+0x30/0x4c
read_pages+0x2fc/0x370
page_cache_ra_unbounded+0xa4/0x23c
page_cache_ra_order+0x290/0x320
do_sync_mmap_readahead+0x108/0x2c0
filemap_fault+0x19c/0x52c
__do_fault+0xc4/0x114
handle_mm_fault+0x5b4/0x1168
do_page_fault+0x338/0x4b4
do_translation_fault+0x40/0x60
do_mem_abort+0x60/0xc8
el0_da+0x4c/0xe0
el0t_64_sync_handler+0xd4/0xfc
el0t_64_sync+0x1a0/0x1a4
[2] Link: https://lore.kernel.org/all/20210317035448.13921-1-huangjianan@oppo.com/
SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
SUSE | |
---|---|
Base Score | 5.5 |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Attack Vector | Local |
Attack Complexity | Low |
Privileges Required | Low |
User Interaction | None |
Scope | Unchanged |
Confidentiality Impact | None |
Integrity Impact | None |
Availability Impact | High |
CVSSv3 Version | 3.1 |
Note from the SUSE Security Team on the kernel-default package
SUSE will no longer fix all CVEs in the Linux Kernel anymore, but declare some bug classes as won't fix. Please refer to TID 21496 for more details. SUSE Bugzilla entry: 1249787 [NEW] No SUSE Security Announcements cross referenced.Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
Product(s) | Source package | State |
---|---|---|
Products under general support and receiving all security fixes. | ||
SUSE Linux Enterprise Desktop 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Desktop 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Desktop 15 SP7 | kernel-default | Not affected |
SUSE Linux Enterprise Desktop 15 SP7 | kernel-source | Not affected |
SUSE Linux Enterprise High Availability Extension 15 SP7 | kernel-default | Not affected |
SUSE Linux Enterprise High Availability Extension 15 SP7 | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP6 | kernel-source-azure | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP7 | kernel-default | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP7 | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP7 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Live Patching 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Live Patching 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Live Patching 15 SP7 | kernel-default | Not affected |
SUSE Linux Enterprise Live Patching 15 SP7 | kernel-source | Not affected |
SUSE Linux Enterprise Micro 5.1 | kernel-default | Affected |
SUSE Linux Enterprise Micro 5.1 | kernel-rt | Affected |
SUSE Linux Enterprise Micro 5.1 | kernel-source | Affected |
SUSE Linux Enterprise Micro 5.1 | kernel-source-rt | Affected |
SUSE Linux Enterprise Micro 5.2 | kernel-default | Affected |
SUSE Linux Enterprise Micro 5.2 | kernel-rt | Affected |
SUSE Linux Enterprise Micro 5.2 | kernel-source | Affected |
SUSE Linux Enterprise Micro 5.2 | kernel-source-rt | Affected |
SUSE Linux Enterprise Micro 5.3 | kernel-default | Affected |
SUSE Linux Enterprise Micro 5.3 | kernel-rt | Affected |
SUSE Linux Enterprise Micro 5.3 | kernel-source | Affected |
SUSE Linux Enterprise Micro 5.3 | kernel-source-rt | Affected |
SUSE Linux Enterprise Micro 5.4 | kernel-default | Affected |
SUSE Linux Enterprise Micro 5.4 | kernel-rt | Affected |
SUSE Linux Enterprise Micro 5.4 | kernel-source | Affected |
SUSE Linux Enterprise Micro 5.4 | kernel-source-rt | Affected |
SUSE Linux Enterprise Micro 5.5 | kernel-default | Not affected |
SUSE Linux Enterprise Micro 5.5 | kernel-source | Not affected |
SUSE Linux Enterprise Micro 5.5 | kernel-source-rt | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP7 | kernel-default | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP7 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Development Tools 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Module for Development Tools 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Development Tools 15 SP7 | kernel-default | Not affected |
SUSE Linux Enterprise Module for Development Tools 15 SP7 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Legacy 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Module for Legacy 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Legacy 15 SP7 | kernel-default | Not affected |
SUSE Linux Enterprise Module for Legacy 15 SP7 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Public Cloud 15 SP6 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Module for Public Cloud 15 SP7 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Real Time 15 SP6 | kernel-source-rt | Not affected |
SUSE Linux Enterprise Real Time 15 SP7 | kernel-source-rt | Not affected |
SUSE Linux Enterprise Server 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Server 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Server 15 SP6 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Server 15 SP7 | kernel-default | Not affected |
SUSE Linux Enterprise Server 15 SP7 | kernel-source | Not affected |
SUSE Linux Enterprise Server 15 SP7 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Server 16.0 | kernel-default | Not affected |
SUSE Linux Enterprise Server 16.0 | kernel-source | Not affected |
SUSE Linux Enterprise Server 16.0 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP6 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP7 | kernel-default | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP7 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP7 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Server for SAP Applications 16.0 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 16.0 | kernel-source-azure | Not affected |
SUSE Linux Enterprise Workstation Extension 15 SP6 | kernel-default | Not affected |
SUSE Linux Enterprise Workstation Extension 15 SP6 | kernel-source | Not affected |
SUSE Linux Enterprise Workstation Extension 15 SP7 | kernel-default | Not affected |
SUSE Linux Enterprise Workstation Extension 15 SP7 | kernel-source | Not affected |
SUSE Linux Micro 6.0 | kernel-default | Not affected |
SUSE Linux Micro 6.0 | kernel-source | Not affected |
SUSE Linux Micro 6.0 | kernel-source-rt | Not affected |
SUSE Linux Micro 6.1 | kernel-default | Not affected |
SUSE Linux Micro 6.1 | kernel-source | Not affected |
SUSE Linux Micro 6.1 | kernel-source-rt | Not affected |
SUSE Linux Micro 6.2 | kernel-source | Not affected |
SUSE Real Time Module 15 SP6 | kernel-source-rt | Not affected |
SUSE Real Time Module 15 SP7 | kernel-source-rt | Not affected |
openSUSE Leap 15.6 | kernel-default | Not affected |
openSUSE Leap 15.6 | kernel-source | Not affected |
openSUSE Leap 15.6 | kernel-source-azure | Not affected |
openSUSE Leap 15.6 | kernel-source-rt | Not affected |
Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
SUSE Linux Enterprise High Performance Computing 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-default | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | kernel-default | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-default | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | kernel-default | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Live Patching 12 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise Live Patching 12 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Live Patching 15 SP3 | kernel-default | Affected |
SUSE Linux Enterprise Live Patching 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Live Patching 15 SP4 | kernel-default | Affected |
SUSE Linux Enterprise Live Patching 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Live Patching 15 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise Live Patching 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Module for Basesystem 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Module for Basesystem 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Development Tools 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Module for Development Tools 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Module for Development Tools 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-default | Not affected |
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP5-LTSS | kernel-default | Not affected |
SUSE Linux Enterprise Server 12 SP5-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security | kernel-default | Not affected |
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security | kernel-source | Not affected |
SUSE Linux Enterprise Server 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP3-LTSS | kernel-default | Affected |
SUSE Linux Enterprise Server 15 SP3-LTSS | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP4-LTSS | kernel-default | Affected |
SUSE Linux Enterprise Server 15 SP4-LTSS | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise Server 15 SP5-LTSS | kernel-default | Not affected |
SUSE Linux Enterprise Server 15 SP5-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | kernel-source | Not affected |
SUSE Manager Proxy 4.3 | kernel-source | Affected |
SUSE Manager Proxy LTS 4.3 | kernel-default | Affected |
SUSE Manager Proxy LTS 4.3 | kernel-source | Affected |
SUSE Manager Retail Branch Server 4.3 | kernel-source | Affected |
SUSE Manager Retail Branch Server LTS 4.3 | kernel-default | Affected |
SUSE Manager Retail Branch Server LTS 4.3 | kernel-source | Affected |
SUSE Manager Server 4.3 | kernel-source | Affected |
SUSE Manager Server LTS 4.3 | kernel-default | Affected |
SUSE Manager Server LTS 4.3 | kernel-source | Affected |
Products past their end of life and not receiving proactive updates anymore. | ||
SUSE CaaS Platform 4.0 | kernel-source | Not affected |
SUSE Enterprise Storage 6 | kernel-source | Not affected |
SUSE Enterprise Storage 7 | kernel-source | Affected |
SUSE Enterprise Storage 7.1 | kernel-source | Affected |
SUSE Linux Enterprise Desktop 11 SP4 | kernel-source | Not affected |
SUSE Linux Enterprise Desktop 12 SP2 | kernel-source | Not affected |
SUSE Linux Enterprise Desktop 12 SP4 | kernel-source | Not affected |
SUSE Linux Enterprise Desktop 15 | kernel-source | Not affected |
SUSE Linux Enterprise Desktop 15 SP1 | kernel-source | Not affected |
SUSE Linux Enterprise Desktop 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Desktop 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Desktop 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Desktop 15 SP5 | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP1 | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-source | Affected |
SUSE Linux Enterprise High Performance Computing 15-ESPOS | kernel-source | Not affected |
SUSE Linux Enterprise High Performance Computing 15-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Micro 5.0 | kernel-default | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP1 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Basesystem 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Module for Development Tools 15 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Development Tools 15 SP1 | kernel-source | Not affected |
SUSE Linux Enterprise Module for Development Tools 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | kernel-source | Not affected |
SUSE Linux Enterprise Real Time 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Real Time 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Real Time 15 SP3 | kernel-source-rt | Affected |
SUSE Linux Enterprise Real Time 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Real Time 15 SP4 | kernel-source-rt | Affected |
SUSE Linux Enterprise Real Time 15 SP5 | kernel-source-rt | Not affected |
SUSE Linux Enterprise Server 11 SP4 | kernel-source | Not affected |
SUSE Linux Enterprise Server 11 SP4 LTSS | kernel-default | Not affected |
SUSE Linux Enterprise Server 11 SP4 LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server 11 SP4-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP2 | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP2-BCL | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP2-ESPOS | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP2-LTSS | kernel-default | Not affected |
SUSE Linux Enterprise Server 12 SP2-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP4 | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP4-ESPOS | kernel-source | Not affected |
SUSE Linux Enterprise Server 12 SP4-LTSS | kernel-default | Not affected |
SUSE Linux Enterprise Server 12 SP4-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server 15 | kernel-source | Not affected |
SUSE Linux Enterprise Server 15 SP1 | kernel-source | Not affected |
SUSE Linux Enterprise Server 15 SP1-BCL | kernel-source | Not affected |
SUSE Linux Enterprise Server 15 SP1-LTSS | kernel-default | Not affected |
SUSE Linux Enterprise Server 15 SP1-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP2-BCL | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP2-LTSS | kernel-default | Affected |
SUSE Linux Enterprise Server 15 SP2-LTSS | kernel-source | Affected |
SUSE Linux Enterprise Server 15 SP3-BCL | kernel-source | Affected |
SUSE Linux Enterprise Server 15-LTSS | kernel-default | Not affected |
SUSE Linux Enterprise Server 15-LTSS | kernel-source | Not affected |
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP2 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 12 SP4 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP1 | kernel-source | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP2 | kernel-source | Affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP3 | kernel-default | Affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP3 | kernel-source | Affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP4 | kernel-default | Affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP4 | kernel-source | Affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP5 | kernel-default | Not affected |
SUSE Linux Enterprise Server for SAP Applications 15 SP5 | kernel-source | Not affected |
SUSE Manager Proxy 4.0 | kernel-source | Not affected |
SUSE Manager Proxy 4.1 | kernel-source | Affected |
SUSE Manager Proxy 4.2 | kernel-source | Affected |
SUSE Manager Retail Branch Server 4.0 | kernel-source | Not affected |
SUSE Manager Retail Branch Server 4.1 | kernel-source | Affected |
SUSE Manager Retail Branch Server 4.2 | kernel-source | Affected |
SUSE Manager Server 4.0 | kernel-source | Not affected |
SUSE Manager Server 4.1 | kernel-source | Affected |
SUSE Manager Server 4.2 | kernel-source | Affected |
SUSE OpenStack Cloud 7 | kernel-source | Not affected |
SUSE OpenStack Cloud 9 | kernel-source | Not affected |
SUSE OpenStack Cloud Crowbar 9 | kernel-source | Not affected |
SUSE Real Time Module 15 SP3 | kernel-source-rt | Affected |
SUSE Real Time Module 15 SP4 | kernel-source-rt | Affected |
SUSE Real Time Module 15 SP5 | kernel-source-rt | Not affected |
openSUSE Leap 15.3 | kernel-source | Affected |
openSUSE Leap 15.3 | kernel-source-rt | Affected |
openSUSE Leap 15.4 | kernel-source | Affected |
openSUSE Leap 15.4 | kernel-source-rt | Affected |
openSUSE Leap 15.5 | kernel-source | Not affected |
openSUSE Leap 15.5 | kernel-source-rt | Not affected |
SUSE Timeline for this CVE
CVE page created: Tue Sep 16 18:13:47 2025CVE page last modified: Wed Sep 17 12:14:58 2025