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22,454 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Li Wang
|
e5ab892d05 |
selftests/cgroup: test_zswap: wait for asynchronous writeback
zswap writeback is asynchronous, but test_zswap.c checks writeback counters immediately after reclaim/trigger paths. On some platforms (e.g. ppc64le), this can race with background writeback and cause spurious failures even when behavior is correct. Add wait_for_writeback() to poll get_cg_wb_count() with a bounded timeout, and use it in: test_zswap_writeback_one() when writeback is expected test_no_invasive_cgroup_shrink() for the wb_group check This keeps the original before/after assertion style while making the tests robust against writeback completion latency. No test behavior change, selftest stability improvement only. Link: https://lore.kernel.org/20260424040059.12940-9-li.wang@linux.dev Signed-off-by: Li Wang <li.wang@linux.dev> Acked-by: Nhat Pham <nphamcs@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Tejun Heo <tj@kernel.org> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Yosry Ahmed <yosryahmed@google.com> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: Jiayuan Chen <jiayuan.chen@linux.dev> Cc: Waiman Long <longman@redhat.com> Cc: Yosry Ahmed <yosry@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Li Wang
|
883015a9c3 |
selftest/cgroup: fix zswap attempt_writeback() on 64K pagesize system
In attempt_writeback(), a memsize of 4M only covers 64 pages on 64K page size systems. When memory.reclaim is called, the kernel prefers reclaiming clean file pages (binary, libc, linker, etc.) over swapping anonymous pages. With only 64 pages of anonymous memory, the reclaim target can be largely or entirely satisfied by dropping file pages, resulting in very few or zero anonymous pages being pushed into zswap. This causes zswap_usage to be extremely small or zero, making zswap_usage/4 insufficient to create meaningful writeback pressure. The test then fails because no writeback is triggered. On 4K page size systems this is not an issue because 4M covers 1024 pages, and file pages are a small fraction of the reclaim target. Fix this by: - Always allocating 1024 pages regardless of page size. This ensures enough anonymous pages to reliably populate zswap and trigger writeback, while keeping the original 4M allocation on 4K systems. - Setting zswap.max to zswap_usage/4 instead of zswap_usage/2 to create stronger writeback pressure, ensuring reclaim reliably triggers writeback even on large page size systems. === Error Log === # uname -rm 6.12.0-211.el10.ppc64le ppc64le # getconf PAGESIZE 65536 # ./test_zswap TAP version 13 1..7 ok 1 test_zswap_usage ok 2 test_swapin_nozswap ok 3 test_zswapin not ok 4 test_zswap_writeback_enabled ... Link: https://lore.kernel.org/20260424040059.12940-8-li.wang@linux.dev Signed-off-by: Li Wang <li.wang@linux.dev> Acked-by: Yosry Ahmed <yosry@kernel.org> Acked-by: Nhat Pham <nphamcs@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Tejun Heo <tj@kernel.org> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: Jiayuan Chen <jiayuan.chen@linux.dev> Cc: Waiman Long <longman@redhat.com> Cc: Yosry Ahmed <yosryahmed@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Li Wang
|
a19b474927 |
selftest/cgroup: fix zswap test_no_invasive_cgroup_shrink on large pagesize system
test_no_invasive_cgroup_shrink sets up two cgroups: wb_group, which is
expected to trigger zswap writeback, and a control group (renamed to
zw_group), which should only have pages sitting in zswap without any
writeback.
There are two problems with the current test:
1) The data patterns are reversed. wb_group uses allocate_bytes(), which
writes only a single byte per page — trivially compressible,
especially by zstd — so compressed pages fit within zswap.max and
writeback is never triggered. Meanwhile, the control group uses
getrandom() to produce hard-to-compress data, but it is the group
that does *not* need writeback.
2) The test uses fixed sizes (10K zswap.max, 10MB allocation) that are
too small on systems with large PAGE_SIZE (e.g. 64K), failing to
build enough memory pressure to trigger writeback reliably.
Fix both issues by:
- Swapping the data patterns: fill wb_group pages with partially
random data (getrandom for page_size/4 bytes) to resist compression
and trigger writeback, and fill zw_group pages with simple repeated
data to stay compressed in zswap.
- Making all size parameters PAGE_SIZE-aware: set allocation size to
PAGE_SIZE * 1024, memory.zswap.max to PAGE_SIZE, and memory.max to
allocation_size / 2 for both cgroups.
- Allocating memory inline instead of via cg_run() so the pages
remain resident throughout the test.
=== Error Log ===
# getconf PAGESIZE
65536
# ./test_zswap
TAP version 13
...
ok 5 test_zswap_writeback_disabled
ok 6 # SKIP test_no_kmem_bypass
not ok 7 test_no_invasive_cgroup_shrink
Link: https://lore.kernel.org/20260424040059.12940-7-li.wang@linux.dev
Signed-off-by: Li Wang <li.wang@linux.dev>
Acked-by: Nhat Pham <nphamcs@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Tejun Heo <tj@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Yosry Ahmed <yosryahmed@google.com>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Jiayuan Chen <jiayuan.chen@linux.dev>
Cc: Waiman Long <longman@redhat.com>
Cc: Yosry Ahmed <yosry@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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Li Wang
|
43743cc516 |
selftests/cgroup: replace hardcoded page size values in test_zswap
test_zswap uses hardcoded values of 4095 and 4096 throughout as page stride and page size, which are only correct on systems with a 4K page size. On architectures with larger pages (e.g., 64K on arm64 or ppc64), these constants cause memory to be touched at sub-page granularity, leading to inefficient access patterns and incorrect page count calculations, which can cause test failures. Replace all hardcoded 4095 and 4096 values with a global pagesize variable initialized from sysconf(_SC_PAGESIZE) at startup, and remove the redundant local sysconf() calls scattered across individual functions. No functional change on 4K page size systems. Link: https://lore.kernel.org/20260424040059.12940-6-li.wang@linux.dev Signed-off-by: Li Wang <li.wang@linux.dev> Acked-by: Yosry Ahmed <yosry@kernel.org> Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Tejun Heo <tj@kernel.org> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: Nhat Pham <nphamcs@gmail.com> Cc: Waiman Long <longman@redhat.com> Cc: Yosry Ahmed <yosryahmed@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Li Wang
|
6e9f5c2eec |
selftests/cgroup: rename PAGE_SIZE to BUF_SIZE in cgroup_util
The cgroup utility code defines a local PAGE_SIZE macro hardcoded to 4096, which is used primarily as a generic buffer size for reading cgroup and proc files. This naming is misleading because the value has nothing to do with the actual page size of the system. On architectures with larger pages (e.g., 64K on arm64 or ppc64), the name suggests a relationship that does not exist. Additionally, the name can shadow or conflict with PAGE_SIZE definitions from system headers, leading to confusion or subtle bugs. To resolve this, rename the macro to BUF_SIZE to accurately reflect its purpose as a general I/O buffer size. Furthermore, test_memcontrol currently relies on this hardcoded 4K value to stride through memory and trigger page faults. Update this logic to use the actual system page size dynamically. This micro-optimizes the memory faulting process by ensuring it iterates correctly and efficiently based on the underlying architecture's true page size. (This part from Waiman) Link: https://lore.kernel.org/20260424040059.12940-5-li.wang@linux.dev Signed-off-by: Li Wang <li.wang@linux.dev> Signed-off-by: Waiman Long <longman@redhat.com> Acked-by: Nhat Pham <nphamcs@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Tejun Heo <tj@kernel.org> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Yosry Ahmed <yosryahmed@google.com> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: Jiayuan Chen <jiayuan.chen@linux.dev> Cc: Yosry Ahmed <yosry@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Li Wang
|
b19ee588e1 |
selftests/cgroup: use runtime page size for zswpin check
test_zswapin compares memory.stat:zswpin (counted in pages) against a byte threshold converted with PAGE_SIZE. In cgroup selftests, PAGE_SIZE is hardcoded to 4096, which makes the conversion wrong on systems with non-4K base pages (e.g. 64K). As a result, the test requires too many pages to pass and fails spuriously even when zswap is working. Use sysconf(_SC_PAGESIZE) for the zswpin threshold conversion so the check matches the actual system page size. Link: https://lore.kernel.org/20260424040059.12940-4-li.wang@linux.dev Signed-off-by: Li Wang <li.wang@linux.dev> Reviewed-by: Yosry Ahmed <yosry@kernel.org> Acked-by: Nhat Pham <nphamcs@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Tejun Heo <tj@kernel.org> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: Jiayuan Chen <jiayuan.chen@linux.dev> Cc: Waiman Long <longman@redhat.com> Cc: Yosry Ahmed <yosryahmed@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Li Wang
|
0d38cded3c |
selftests/cgroup: avoid OOM in test_swapin_nozswap
test_swapin_nozswap can hit OOM before reaching its assertions on some setups. The test currently sets memory.max=8M and then allocates/reads 32M with memory.zswap.max=0, which may over-constrain reclaim and kill the workload process. Replace hardcoded sizes with PAGE_SIZE-based values: - control_allocation_size = PAGE_SIZE * 512 - memory.max = control_allocation_size * 3 / 4 - minimum expected swap = control_allocation_size / 4 This keeps the test pressure model intact (allocate/read beyond memory.max to force swap-in/out) while making it more robust across different environments. The test intent is unchanged: confirm that swapping occurs while zswap remains unused when memory.zswap.max=0. === Error Logs === # ./test_zswap TAP version 13 1..7 ok 1 test_zswap_usage not ok 2 test_swapin_nozswap ... # dmesg [271641.879153] test_zswap invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=0 [271641.879168] CPU: 1 UID: 0 PID: 177372 Comm: test_zswap Kdump: loaded Not tainted 6.12.0-211.el10.ppc64le #1 VOLUNTARY [271641.879171] Hardware name: IBM,9009-41A POWER9 (architected) 0x4e0202 0xf000005 of:IBM,FW940.02 (UL940_041) hv:phyp pSeries [271641.879173] Call Trace: [271641.879174] [c00000037540f730] [c00000000127ec44] dump_stack_lvl+0x88/0xc4 (unreliable) [271641.879184] [c00000037540f760] [c0000000005cc594] dump_header+0x5c/0x1e4 [271641.879188] [c00000037540f7e0] [c0000000005cb464] oom_kill_process+0x324/0x3b0 [271641.879192] [c00000037540f860] [c0000000005cbe48] out_of_memory+0x118/0x420 [271641.879196] [c00000037540f8f0] [c00000000070d8ec] mem_cgroup_out_of_memory+0x18c/0x1b0 [271641.879200] [c00000037540f990] [c000000000713888] try_charge_memcg+0x598/0x890 [271641.879204] [c00000037540fa70] [c000000000713dbc] charge_memcg+0x5c/0x110 [271641.879207] [c00000037540faa0] [c0000000007159f8] __mem_cgroup_charge+0x48/0x120 [271641.879211] [c00000037540fae0] [c000000000641914] alloc_anon_folio+0x2b4/0x5a0 [271641.879215] [c00000037540fb60] [c000000000641d58] do_anonymous_page+0x158/0x6b0 [271641.879218] [c00000037540fbd0] [c000000000642f8c] __handle_mm_fault+0x4bc/0x910 [271641.879221] [c00000037540fcf0] [c000000000643500] handle_mm_fault+0x120/0x3c0 [271641.879224] [c00000037540fd40] [c00000000014bba0] ___do_page_fault+0x1c0/0x980 [271641.879228] [c00000037540fdf0] [c00000000014c44c] hash__do_page_fault+0x2c/0xc0 [271641.879232] [c00000037540fe20] [c0000000001565d8] do_hash_fault+0x128/0x1d0 [271641.879236] [c00000037540fe50] [c000000000008be0] data_access_common_virt+0x210/0x220 [271641.879548] Tasks state (memory values in pages): ... [271641.879550] [ pid ] uid tgid total_vm rss rss_anon rss_file rss_shmem pgtables_bytes swapents oom_score_adj name [271641.879555] [ 177372] 0 177372 571 0 0 0 0 51200 96 0 test_zswap [271641.879562] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0,oom_memcg=/no_zswap_test,task_memcg=/no_zswap_test,task=test_zswap,pid=177372,uid=0 [271641.879578] Memory cgroup out of memory: Killed process 177372 (test_zswap) total-vm:36544kB, anon-rss:0kB, file-rss:0kB, shmem-rss:0kB, UID:0 pgtables:50kB oom_score_adj:0 Link: https://lore.kernel.org/20260424040059.12940-3-li.wang@linux.dev Signed-off-by: Li Wang <li.wang@linux.dev> Acked-by: Yosry Ahmed <yosry@kernel.org> Acked-by: Nhat Pham <nphamcs@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Tejun Heo <tj@kernel.org> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: Jiayuan Chen <jiayuan.chen@linux.dev> Cc: Waiman Long <longman@redhat.com> Cc: Yosry Ahmed <yosryahmed@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Li Wang
|
9f40c3cdf0 |
selftests/cgroup: skip test_zswap if zswap is globally disabled
Patch series "selftests/cgroup: improve zswap tests robustness and support large page sizes", v7. This patchset aims to fix various spurious failures and improve the overall robustness of the cgroup zswap selftests. The primary motivation is to make the tests compatible with architectures that use non-4K page sizes (such as 64K on ppc64le and arm64). Currently, the tests rely heavily on hardcoded 4K page sizes and fixed memory limits. On 64K page size systems, these hardcoded values lead to sub-page granularity accesses, incorrect page count calculations, and insufficient memory pressure to trigger zswap writeback, ultimately causing the tests to fail. Additionally, this series addresses OOM kills occurring in test_swapin_nozswap by dynamically scaling memory limits, and prevents spurious test failures when zswap is built into the kernel but globally disabled. This patch (of 8): test_zswap currently only checks whether zswap is present by testing /sys/module/zswap. This misses the runtime global state exposed in /sys/module/zswap/parameters/enabled. When zswap is built/loaded but globally disabled, the zswap cgroup selftests run in an invalid environment and may fail spuriously. Check the runtime enabled state before running the tests: - skip if zswap is not configured, - fail if the enabled knob cannot be read, - skip if zswap is globally disabled. Also print a hint in the skip message on how to enable zswap. Link: https://lore.kernel.org/20260424040059.12940-1-li.wang@linux.dev Link: https://lore.kernel.org/20260424040059.12940-2-li.wang@linux.dev Signed-off-by: Li Wang <li.wang@linux.dev> Acked-by: Yosry Ahmed <yosry@kernel.org> Acked-by: Nhat Pham <nphamcs@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Tejun Heo <tj@kernel.org> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: Jiayuan Chen <jiayuan.chen@linux.dev> Cc: Waiman Long <longman@redhat.com> Cc: Yosry Ahmed <yosryahmed@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
|
8d21446a6c |
selftests/damon/sysfs.py: test failed region quota charge ratio
Extend sysfs.py DAMON selftest to setup DAMOS action failed region quota charge ratio and assert the setup is made into DAMON internal state. Link: https://lore.kernel.org/20260428013402.115171-12-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Hildenbrand <david@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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bcd8d68c6b |
selftests/damon/drgn_dump_damon_status: support failed region quota charge ratio
Extend drgn_dump_damon_status.py to dump DAMON internal state for DAMOS action failed regions quota charge ratio, to be able to show if the internal state for the feature is working, with future DAMON selftests. Link: https://lore.kernel.org/20260428013402.115171-11-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Hildenbrand <david@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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588f08518f |
selftests/damon/_damon_sysfs: support failed region quota charge ratio
Extend _damon_sysfs.py for DAMOS action failed regions quota charge ratio setup, so that we can add kselftest for the new feature. Link: https://lore.kernel.org/20260428013402.115171-10-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Hildenbrand <david@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Li Wang
|
04cf82a741 |
selftests/mm: suppress compiler error in liburing check
When building the mm selftests on a system without liburing development
headers, check_config.sh leaks a raw compiler error:
/tmp/tmp.kIIOIqwe3n.c:2:10: fatal error: liburing.h: No such file or directory
2 | #include <liburing.h>
| ^~~~~~~~~~~~
Since this is an expected failure during the configuration probe,
redirect the compiler output to /dev/null to hide it.
And the build system prints a clear warning when this occurs:
Warning: missing liburing support. Some tests will be skipped.
Because the user is properly notified about the missing dependency, the
raw compiler error is redundant and only confuse users.
Additionally, update the Makefile to use $(Q) and $(call msg,...) for the
check_config.sh execution. This aligns the probe with standard kbuild
output formatting, providing a clean "CHK" message instead of printing the
raw command during the build.
Link: https://lore.kernel.org/20260422080446.26020-3-wangli.ahau@gmail.com
Signed-off-by: Li Wang <wangli.ahau@gmail.com>
Tested-by: David Hildenbrand (Arm) <david@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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Li Wang
|
1d224e7cbe |
selftests/mm: respect build verbosity settings for 32/64-bit targets
Patch series "selftests/mm: clean up build output and verbosity", v3.
Currently, the build process for the mm selftests is unnecessarily noisy.
First, it leaks raw compiler errors during the liburing feature probe if
the headers are missing, which is confusing since the build system already
handles this gracefully with a clear warning.
Second, the specific 32-bit and 64-bit compilation targets ignore the
standard kbuild verbosity settings, always printing their full compiler
commands even during a default quiet build.
This patch (of 2):
The 32-bit and 64-bit compilation rules invoke $(CC) directly, bypassing
the $(Q) quiet prefix and $(call msg,...) helper used by the rest of the
selftests build system. This causes these rules to always print the full
compiler command line, even when V=0 (the default).
Wrap the commands with $(Q) and $(call msg,CC,,$@) to match the convention
used by lib.mk, so that quiet and verbose builds behave consistently
across all targets.
==== Build logs ====
...
CC merge
CC rmap
CC soft-dirty
gcc -Wall -O2 -I /usr/src/25/tools/testing/selftests/../../..
-isystem /usr/src/25/tools/testing/selftests/../../../usr/include
-isystem /usr/src/25/tools/testing/selftests/../../../tools/include/uapi
-Wunreachable-code -U_FORTIFY_SOURCE -no-pie -D_GNU_SOURCE=
-I/usr/src/25/tools/testing/selftests/../../../tools/testing/selftests
-m32 -mxsave protection_keys.c vm_util.c thp_settings.c pkey_util.c
-lrt -lpthread -lm -lrt -ldl -lm
-o /usr/src/25/tools/testing/selftests/mm/protection_keys_32
gcc -Wall -O2 -I /usr/src/25/tools/testing/selftests/../../..
-isystem /usr/src/25/tools/testing/selftests/../../../usr/include
-isystem /usr/src/25/tools/testing/selftests/../../../tools/include/uapi
-Wunreachable-code -U_FORTIFY_SOURCE -no-pie -D_GNU_SOURCE=
-I/usr/src/25/tools/testing/selftests/../../../tools/testing/selftests
-m32 -mxsave pkey_sighandler_tests.c vm_util.c thp_settings.c pkey_util.c
-lrt -lpthread -lm -lrt -ldl -lm
-o /usr/src/25/tools/testing/selftests/mm/pkey_sighandler_tests_32
...
Link: https://lore.kernel.org/20260422080446.26020-1-wangli.ahau@gmail.com
Link: https://lore.kernel.org/20260422080446.26020-2-wangli.ahau@gmail.com
Signed-off-by: Li Wang <wangli.ahau@gmail.com>
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: David Hildenbrand (Arm) <david@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
Linus Torvalds
|
6a97c4d526 |
Arm:
- Fix ITS EventID sanitisation when restoring an interrupt translation table. - Fix PPI memory leak when failing to initialise a vcpu. - Correctly return an error when the validation of a hypervisor trace descriptor fails, and limit this validation to protected mode only. RISC-V: - Fix invalid HVA warning in steal-time recording - Return SBI_ERR_FAILURE to guest upon OOM in pmu_event_info() and pmu_snapshot_set_shmem() - Fix NULL pointer dereference in SBI v0.1 SEND_IPI handler - Fix sign extension of value for MMIO loads s390: - Fix bugs in vSIE (nested virtualization) and UCONTROL, caused by the page table rewrite. x86: - Apply erratum #1235 workaround (disable AVIC IPI virtualization) on Hygon Family 18h, just like on AMD Family 17h. - When KVM_CAP_X86_APIC_BUS_CYCLES_NS is queried on a specific VM, return the VM's configured APIC bus frequency instead of the default. This is less confusing (read: not wrong) and makes it easier to fill in CPUID information that communicates the APIC bus frequency to the guest. Selftests: - Do not include glibc-internal <bits/endian.h>; it worked by chance and broke building KVM selftests with musl. -----BEGIN PGP SIGNATURE----- iQFIBAABCgAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmoSp6cUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroPgswgAiO5Gi7d6dIspG7e41g5fF2Wq5Rnq 1nB7ZV+CqT0k1fvFe4hBrc2c+DLzFn+h3/fj+4scVF4oAN9YRauIq/2xlGWR23bR gsFncJ2w6TAKLN3MvCh1SpO+GI7kcnTs7HtJ6weDkddbGEtUIgkUZkwEYnEN4t6T pgO7USGFbBBXY575UO/xMeLkfyABzJlLjQbKrvG6RKtEsKAxzTxcPtjQegtHYH4Q 6DLGif4YUB0ZWMQETccl/bKqU6L+OQgDUOSUoHWt+2ox0DLDwiy7VVf3infecXsJ r3PGKn709nlrd+hBn2S9gCbT/BCxp828k2DxSasZ7PQ8634O+qrpLLkODw== =VWgs -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull kvm fixes from Paolo Bonzini: "arm64: - Fix ITS EventID sanitisation when restoring an interrupt translation table. - Fix PPI memory leak when failing to initialise a vcpu. - Correctly return an error when the validation of a hypervisor trace descriptor fails, and limit this validation to protected mode only. RISC-V: - Fix invalid HVA warning in steal-time recording - Return SBI_ERR_FAILURE to guest upon OOM in pmu_event_info() and pmu_snapshot_set_shmem() - Fix NULL pointer dereference in SBI v0.1 SEND_IPI handler - Fix sign extension of value for MMIO loads s390: - Fix bugs in vSIE (nested virtualization) and UCONTROL, caused by the page table rewrite. x86: - Apply erratum #1235 workaround (disable AVIC IPI virtualization) on Hygon Family 18h, just like on AMD Family 17h. - When KVM_CAP_X86_APIC_BUS_CYCLES_NS is queried on a specific VM, return the VM's configured APIC bus frequency instead of the default. This is less confusing (read: not wrong) and makes it easier to fill in CPUID information that communicates the APIC bus frequency to the guest. Selftests: - Do not include glibc-internal <bits/endian.h>; it worked by chance and broke building KVM selftests with musl" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: SVM: Disable AVIC IPI virtualization on Hygon Family 18h (erratum #1235) KVM: selftests: Verify that KVM returns the configured APIC cycle length KVM: x86: Return the VM's configured APIC bus frequency when queried KVM: selftests: elf: Include <endian.h> instead of <bits/endian.h> KVM: s390: Properly reset zero bit in PGSTE KVM: s390: vsie: Fix redundant rmap entries KVM: s390: vsie: Fix unshadowing logic KVM: s390: Fix leaking kvm_s390_mmu_cache in case of errors KVM: s390: vsie: Fix memory leak when unshadowing KVM: arm64: Fix nVHE/pKVM hyp tracing error on invalid desc KVM: arm64: vgic: Free private_irqs when init fails after allocation KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits RISC-V: KVM: Fix sign extension for MMIO loads RISC-V: KVM: Fix NULL pointer dereference in SBI v0.1 SEND_IPI handler riscv: kvm: return SBI_ERR_FAILURE for pmu_event_info() when OOM riscv: kvm: return SBI_ERR_FAILURE for pmu_snapshot_set_shmem() when OOM RISC-V: KVM: Fix invalid HVA warning in steal-time recording |
||
|
Linus Torvalds
|
f0e77c598e |
bpf-fixes
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||
|
Linus Torvalds
|
ab868c1097 |
RDMA v7.1 first rc window
- syzbot triggred crash in rxe due to concurrent plug/unplug - Possible non-zero'd memory exposed to userspace in bnxt_re - Malicous 'magic packet' with SIW causes a buffer overflow - Tighten the new uAPI validation code to not crash in debugging prints and have the right module dependencies in drivers - mana was missing the max_msg_sz report to userspace - UAF in rtrs on an error path -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRRRCHOFoQz/8F5bUaFwuHvBreFYQUCahDmpgAKCRCFwuHvBreF YRRTAP0YXV95Y5gcli55IhetKjJUzQbaREz2NueqIpf1IorMbAD+Lns4DgZCU0KW bC81x7cGHBSyCju9zogIdBFJhsbxeQ4= =MxJz -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma Pull rdma fixes from Jason Gunthorpe: - syzbot triggred crash in rxe due to concurrent plug/unplug - Possible non-zero'd memory exposed to userspace in bnxt_re - Malicous 'magic packet' with SIW causes a buffer overflow - Tighten the new uAPI validation code to not crash in debugging prints and have the right module dependencies in drivers - mana was missing the max_msg_sz report to userspace - UAF in rtrs on an error path * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: RDMA/rtrs: Fix use-after-free in path file creation cleanup RDMA/mana_ib: Report max_msg_sz in mana_ib_query_port RDMA/core: Do not read wild stack memory in uverbs_get_handler_fn() RDMA/core: Move the _ib_copy_validate_udata* functions to ib_core_uverbs RDMA/siw: Reject MPA FPDU length underflow before signed receive math RDMA/bnxt_re: zero shared page before exposing to userspace selftests/rdma: explicitly skip tests when required modules are missing RDMA/nldev: Add mutual exclusion in nldev_dellink() |
||
Sean Christopherson
|
d9c41dc531 |
KVM: selftests: Verify that KVM returns the configured APIC cycle length
Add checks in the APIC bus clock test to verify that querying KVM_CAP_X86_APIC_BUS_CYCLES_NS on the VM after changing the frequency returns the VM's actual APIC cycle length, not KVM's default. For giggles, verify that KVM still returns its default frequency for the system-scoped check. Signed-off-by: Sean Christopherson <seanjc@google.com> Message-ID: <20260522173526.3539407-3-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
Hisam Mehboob
|
2d42c7cf1a |
KVM: selftests: elf: Include <endian.h> instead of <bits/endian.h>
<bits/endian.h> is a glibc-internal header that explicitly states it
should never be included directly:
#error "Never use <bits/endian.h> directly; include <endian.h> instead."
Replace it with the correct public header <endian.h> which works on
all C libraries including musl. Building KVM selftests with musl-gcc
fails with:
lib/elf.c:10:10: fatal error: bits/endian.h: No such file or directory
Fixes:
|
||
|
Linus Torvalds
|
68993ced0f |
Including fixes from Bluetooth, wireless and netfilter.
Current release - fix to a fix:
- Bluetooth: btmtk: accept too short WMT FUNC_CTRL events
- vsock/virtio: relax the recently added memory limit a little
Current release - regressions:
- IB/IPoIB: make sure IB drivers always use async set_rx_mode since
some (mlx5) are now required to use it due to locking changes
Previous releases - regressions:
- udp: fix UDP length on last GSO_PARTIAL segment
- af_unix: fix UAF read of tail->len in unix_stream_data_wait()
- tcp: fix stale per-CPU tcp_tw_isn leak enabling ISN prediction
- mlx5e: fix unlocked writing to ICOSQ, breaking AF_XDP
Previous releases - always broken:
- tap: fix stack info leak in tap_ioctl() SIOCGIFHWADDR
- ipv4: raw: reject IP_HDRINCL packets with ihl < 5
- Bluetooth: a lot of locking and concurrency fixes (as always)
- batman-adv (mesh wireless networking): a lot of random fixes
for issues reported by security researchers and Sashiko
- netfilter: same thing, a lot of small security-ish fixes
all over the place, nothing really stands out
Misc:
- bring back the old 3c509 driver, Maciej wants to maintain it
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from Bluetooth, wireless and netfilter.
Craziness continues with no end in sight. Even discounting the driver
revert this is a pretty huge PR for standards of the previous era. I'd
speculate - we haven't seen the worst of it, yet. Good news, I guess,
is that so far we haven't seen many (any?) cases of "AI reported a
bug, we fixed it and a real user regressed".
Current release - fix to a fix:
- Bluetooth: btmtk: accept too short WMT FUNC_CTRL events
- vsock/virtio: relax the recently added memory limit a little
Current release - regressions:
- IB/IPoIB: make sure IB drivers always use async set_rx_mode since
some (mlx5) are now required to use it due to locking changes
Previous releases - regressions:
- udp: fix UDP length on last GSO_PARTIAL segment
- af_unix: fix UAF read of tail->len in unix_stream_data_wait()
- tcp: fix stale per-CPU tcp_tw_isn leak enabling ISN prediction
- mlx5e: fix unlocked writing to ICOSQ, breaking AF_XDP
Previous releases - always broken:
- tap: fix stack info leak in tap_ioctl() SIOCGIFHWADDR
- ipv4: raw: reject IP_HDRINCL packets with ihl < 5
- Bluetooth: a lot of locking and concurrency fixes (as always)
- batman-adv (mesh wireless networking): a lot of random fixes for
issues reported by security researchers and Sashiko
- netfilter: same thing, a lot of small security-ish fixes all over
the place, nothing really stands out
Misc:
- bring back the old 3c509 driver, Maciej wants to maintain it"
* tag 'net-7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (187 commits)
net: enetc: avoid VF->PF mailbox timeout during SR-IOV teardown
net: enetc: fix init and teardown order to prevent use of unsafe resources
net: enetc: fix unbounded loop and interrupt handling in VF-to-PF messaging
net: enetc: fix DMA write to freed memory in enetc_msg_free_mbx()
net: enetc: fix race condition in VF MAC address configuration
net: enetc: fix TOCTOU race and validate VF MAC address
net: enetc: add ratelimiting to VF mailbox error messages
net: enetc: fix missing error code when pf->vf_state allocation fails
net: enetc: fix incorrect mailbox message status returned to VFs
net: bridge: prevent too big nested attributes in br_fill_linkxstats()
l2tp: use list_del_rcu in l2tp_session_unhash
net: bcmgenet: keep RBUF EEE/PM disabled
ethernet: 3c509: Fix most coding style issues
ethernet: 3c509: Update documentation to match MAINTAINERS
ethernet: 3c509: Add GPL 2.0 SPDX license identifier
ethernet: 3c509: Fix AUI transceiver type selection
Revert "drivers: net: 3com: 3c509: Remove this driver"
tools: ynl: support listening on all nsids
net: gro: don't merge zcopy skbs
pds_core: ensure null-termination for firmware version strings
...
|
||
Nimrod Oren
|
dfc0770433 |
selftests: net: Fix checksums in xdp_native
Data adjustment cases failed with "Data exchange failed" when using IPv4
because the program did not update the IP and UDP checksums in the IPv4
branch. The issue was masked when both IPv4 and IPv6 were configured,
since the test harness prefers IPv6.
While here, generalize csum_fold_helper() to fold twice so it works for
any 32-bit input.
Fixes:
|
||
Matthieu Baerts (NGI0)
|
92cc6708f4 |
selftests: rds: config: disable modules
The run.sh script explicitly checks that CONFIG_MODULES is disabled.
By default, this config option is enabled. Explicitly disable it to be
able to run the RDS tests.
Note that writing '# CONFIG_(...) is not set' is usually recommended to
disable an option in the .config, but it looks like selftests usually
set 'CONFIG_(...)=n', which looks clearer.
Fixes:
|
||
Xingwang Xiang
|
33644bd38a |
selftests/bpf: add regression test for ktls+sockmap verdict UAF
Test the scenario where a socket is inserted into a sockmap with a BPF_SK_SKB_VERDICT program before TLS RX is configured. Previously sk_psock_verdict_data_ready() would call tcp_read_skb() and drain the receive queue without advancing copied_seq, causing tls_decrypt_sg() to walk a dangling frag_list pointer (use-after-free). The test drives the full vulnerable sequence and verifies that after the fix recv() returns the correct decrypted data. Signed-off-by: Xingwang Xiang <v3rdant.xiang@gmail.com> Link: https://patch.msgid.link/20260517145630.20521-3-v3rdant.xiang@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
KP Singh
|
49b18315be |
bpf: Reject NULL data/sig in bpf_verify_pkcs7_signature
__bpf_dynptr_data() can return NULL (FILE dynptrs, any non-contiguous
backing). bpf_verify_pkcs7_signature() forwards the pointer to
verify_pkcs7_signature() unchecked, causing a NULL deref in
asn1_ber_decoder() reachable from a sleepable BPF LSM at lsm.s/bpf.
NULL-check both pointers and reject with -EINVAL. Mirrors the guards
already in kernel/bpf/crypto.c.
Fixes:
|
||
Ido Schimmel
|
ae743a8ca8 |
selftests: bridge_vlan_mcast: Test toggling of multicast snooping
Test toggling of multicast snooping when per-VLAN multicast snooping is enabled. The test always passes, but without "bridge: mcast: Fix possible use-after-free when removing a bridge port" it results in a splat. Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20260517121122.188333-3-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Linus Torvalds
|
c6e99c10fd |
14 hotfixes. 9 are for MM. 10 are cc:stable and the remainder are for
post-7.1 issues or aren't deemed suitable for backporting. There's a 2 patch MAINTAINERS series from Mike Rapoport which updates us for the new KEXEC/KDUMP/crash/LUO/etc arrangements. And a 2 patch series from Muchun Song to fix a couple of memory-hotplug issues. Otherwise singletons, please see the changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCagviKQAKCRDdBJ7gKXxA jlbsAP9SEShHxXEYcRMVQtXb+8/iJDe7J3KwVDP4e0VOlQKTPAD/c+C2bx4nllOG 77wl9Qkr++KqTSmoPbzA7Q02gJC2ngQ= =2qN3 -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2026-05-18-21-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "14 hotfixes. 9 are for MM. 10 are cc:stable and the remainder are for post-7.1 issues or aren't deemed suitable for backporting. There's a two-patch MAINTAINERS series from Mike Rapoport which updates us for the new KEXEC/KDUMP/crash/LUO/etc arrangements. And another two-patch series from Muchun Song to fix a couple of memory-hotplug issues. Otherwise singletons, please see the changelogs for details" * tag 'mm-hotfixes-stable-2026-05-18-21-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm/memory: fix spurious warning when unmapping device-private/exclusive pages mm: fix __vm_normal_page() to handle missing support for pmd_special()/pud_special() drivers/base/memory: fix memory block reference leak in poison accounting mm/memory_hotplug: fix memory block reference leak on remove lib: kunit_iov_iter: fix test fail on powerpc mm/page_alloc: fix initialization of tags of the huge zero folio with init_on_free MAINTAINERS: add kexec@ list to LIVE UPDATE ENTRY MAINTAINERS: add tree for KDUMP and KEXEC selftests/mm: run_vmtests.sh: fix destructive tests invocation scripts/gdb: slab: update field names of struct kmem_cache scripts/gdb: mm: cast untyped symbols in x86_page_ops mm/damon: fix damos_stat tracepoint format for sz_applied mm/damon/sysfs-schemes: call missing mem_cgroup_iter_break() mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page |
||
|
Matthieu Baerts (NGI0)
|
01ff78e4b3 |
selftests: mptcp: drop nanoseconds width specifier
Using the format specifier +%s%3N with GNU date is honoured, and only
prints 3 digits of the nanoseconds portion of the seconds since epoch,
which corresponds to the milliseconds.
The uutils implementation of date currently does not honour this, and
always prints all 9 digits. This is a known issue [1], but can be worked
around by adapting this test to use nanoseconds instead of microseconds,
and then divide it by 1e6.
This fix is similar to what has been done on systemd side [2], and it is
needed to run the selftests on Ubuntu 26.04, containing uutils 0.8.0.
Note that the Fixes tag is there even if this patch doesn't fix an issue
in the kernel selftests, but it is useful for those using uutils 0.8.0.
Fixes:
|
||
Li Xiasong
|
fc5ef43318 |
selftests: mptcp: join: cover ADD_ADDR tx drop and list progress
Extend add_addr_ports_tests with IPv6 signaling cases that exercise ADD_ADDR tx-space shortage when tcp_timestamps are enabled. Add one case to verify PM still progresses to later signal endpoints after the first one is dropped. This covers both failure accounting and the non-blocking behavior of the announce list after a tx-space drop on pure ACK. Signed-off-by: Li Xiasong <lixiasong1@huawei.com> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260515-net-mptcp-misc-fixes-7-1-rc4-v2-3-701e96419f2f@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
Paolo Abeni
|
956aa1ec97 |
Included fixes:
* fix TCP selftest failures by reducing number of attempted pings * fix RCU ptr deref outside of RCU read section * fix UAF in case of TCP peer failed to be added to hashtable * fix race condition between iface teardown and new peer being added * ensure dstats are updated with BH disabled to avoid concurrency -----BEGIN PGP SIGNATURE----- iJEEABYIADkWIQQKU153ubb5unbkl6Gx/ZpNW1HNdwUCagZUrRsUgAAAAAAEAA5t YW51MiwyLjUrMS4xMiwyLDIACgkQsf2aTVtRzXcJ3gEAv0uFO2tjJha8KppS8Bpa 3asGcAcFP686hMYpm5MjrmIA+wcWETrqwtzf1YcfjKyDCVNGVwrHSyQl5dIGNwGD nQgN =WFT+ -----END PGP SIGNATURE----- Merge tag 'ovpn-net-20260514' of https://github.com/OpenVPN/ovpn-net-next Antonio Quartulli says: ==================== Included fixes: * fix TCP selftest failures by reducing number of attempted pings * fix RCU ptr deref outside of RCU read section * fix UAF in case of TCP peer failed to be added to hashtable * fix race condition between iface teardown and new peer being added * ensure dstats are updated with BH disabled to avoid concurrency * tag 'ovpn-net-20260514' of https://github.com/OpenVPN/ovpn-net-next: ovpn: disable BHs when updating device stats ovpn: fix race between deleting interface and adding new peer ovpn: respect peer refcount in CMD_NEW_PEER error path ovpn: tcp - use cached peer pointer in ovpn_tcp_close() selftests: ovpn: reduce remaining ping flood counts ==================== Link: https://patch.msgid.link/20260514231544.795993-1-antonio@openvpn.net Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
Kumar Kartikeya Dwivedi
|
511a5db3c9 |
selftests/bpf: Cover global subprog exception leaks
Add a verifier failure case where the caller holds a reference across a global subprog call that may throw. The program must be rejected because the exceptional path would skip the caller's reference release. Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20260517075530.3461166-3-memxor@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
||
|
Linus Torvalds
|
d458a24034 |
block-7.1-20260515
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Merge tag 'block-7.1-20260515' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- NVMe merge request via Keith:
- Fix memory leak on a passthrough integrity mapping failure (Keith)
- Hide secrets behind debug option (Hannes)
- Fix pci use-after-free for host memory buffer (Chia-Lin Kao)
- Fix tcp taregt use-after-free for data digest (Sagi)
- Revert a mistaken quirk (Alan Cui)
- Fix uevent and controller state race condition (Maurizio)
- Fix apple submission queue re-initialization (Nick Chan)
- Three fixes for blk-integrity, fixing an issue with the user data
mapping and two problems with recomputing number of segments
- Two fixes for the iov_iter bounce buffering
- Fix for the handling of dead zoned write plugs
- ublk max_sectors validation fix, with associated selftest addition
* tag 'block-7.1-20260515' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
nvme-apple: Reset q->sq_tail during queue init
block: align down bounces bios
block: pass a minsize argument to bio_iov_iter_bounce
selftests: ublk: cap nthreads to kernel's actual nr_hw_queues
block: fix handling of dead zone write plugs
block: bio-integrity: Fix null-ptr-deref in bio_integrity_map_user()
block: recompute nr_integrity_segments in blk_insert_cloned_request
block: don't overwrite bip_vcnt in bio_integrity_copy_user()
nvme: fix race condition between connected uevent and STARTED_ONCE flag
Revert "nvme: add quirk NVME_QUIRK_IGNORE_DEV_SUBNQN for 144d:a808"
nvmet-tcp: Fix potential UAF when ddgst mismatch
nvme-pci: fix use-after-free in nvme_free_host_mem()
nvmet-auth: Do not print DH-HMAC-CHAP secrets
nvme: fix bio leak on mapping failure
nvme: make prp passthrough usage less scary
ublk: reject max_sectors smaller than PAGE_SECTORS in parameter validation
|
||
|
Linus Torvalds
|
66182ca873 |
Including fixes from netfilter.
Previous releases - regressions:
- ethtool: fix NULL pointer dereference in phy_reply_size
- netfilter:
- allocate hook ops while under mutex
- close dangling table module init race
- restore nf_conntrack helper propagation via expectation
- tcp:
- fix potential UAF in reqsk_timer_handler().
- fix out-of-bounds access for twsk in tcp_ao_established_key().
- vsock: fix empty payload in tap skb for non-linear buffers
- hsr: fix NULL pointer dereference in hsr_get_node_data()
- eth: cortina: fix RX drop accounting
- eth: ice: fix locking in ice_dcb_rebuild()
Previous releases - always broken:
- napi: avoid gro timer misfiring at end of busypoll
- sched:
- dualpi2: initialize timer earlier in dualpi2_init()
- sch_cbs: Call qdisc_reset for child qdisc
- shaper:
- fix ordering issue in net_shaper_commit()
- reject handle IDs exceeding internal bit-width
- ipv6: flowlabel: enforce per-netns limit for unprivileged callers
- tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring
- smc: avoid NULL deref of conn->lnk in smc_msg_event tracepoint
- sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL
- batman-adv:
- reject new tp_meter sessions during teardown
- purge non-released claims
- eth: i40e: cleanup PTP registration on probe failure
- eth: idpf: fix double free and use-after-free in aux device error paths
- eth: ena: fix potential use-after-free in get_timestamp
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from netfilter.
Previous releases - regressions:
- ethtool: fix NULL pointer dereference in phy_reply_size
- netfilter:
- allocate hook ops while under mutex
- close dangling table module init race
- restore nf_conntrack helper propagation via expectation
- tcp:
- fix potential UAF in reqsk_timer_handler().
- fix out-of-bounds access for twsk in tcp_ao_established_key().
- vsock: fix empty payload in tap skb for non-linear buffers
- hsr: fix NULL pointer dereference in hsr_get_node_data()
- eth:
- cortina: fix RX drop accounting
- ice: fix locking in ice_dcb_rebuild()
Previous releases - always broken:
- napi: avoid gro timer misfiring at end of busypoll
- sched:
- dualpi2: initialize timer earlier in dualpi2_init()
- sch_cbs: Call qdisc_reset for child qdisc
- shaper:
- fix ordering issue in net_shaper_commit()
- reject handle IDs exceeding internal bit-width
- ipv6: flowlabel: enforce per-netns limit for unprivileged callers
- tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring
- smc: avoid NULL deref of conn->lnk in smc_msg_event tracepoint
- sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL
- batman-adv:
- reject new tp_meter sessions during teardown
- purge non-released claims
- eth:
- i40e: cleanup PTP registration on probe failure
- idpf: fix double free and use-after-free in aux device error paths
- ena: fix potential use-after-free in get_timestamp"
* tag 'net-7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (88 commits)
net: phy: DP83TC811: add reading of abilities
net: tls: prevent chain-after-chain in plain text SG
net: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring
net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot
macsec: use rcu_work to defer TX SA crypto cleanup out of softirq
macsec: use rcu_work to defer RX SA crypto cleanup out of softirq
macsec: introduce dedicated workqueue for SA crypto cleanup
net: net_failover: Fix the deadlock in slave register
MAINTAINERS: update atlantic driver maintainer
selftests/tc-testing: Add QFQ/CBS qlen underflow test
net/sched: sch_cbs: Call qdisc_reset for child qdisc
FDDI: defza: Sanitise the reset safety timer
net: ethernet: ravb: Do not check URAM suspension when WoL is active
ethtool: fix ethnl_bitmap32_not_zero() bit interval semantics
net/smc: avoid NULL deref of conn->lnk in smc_msg_event tracepoint
net/smc: fix sleep-inside-lock in __smc_setsockopt() causing local DoS
net: atm: fix skb leak in sigd_send() default branch
net: ethtool: phy: avoid NULL deref when PHY driver is unbound
net: atlantic: preserve PCI wake-from-D3 on shutdown when WOL enabled
net: shaper: reject QUEUE scope handle with missing id
...
|
||
Guannan Wang
|
5939801753 |
bpf: Use array_map_meta_equal for percpu array inner map replacement
percpu_array_map_ops.map_meta_equal points to the generic
bpf_map_meta_equal(), which does not compare max_entries. When a
percpu array serves as an inner map, replacing it with one that has
fewer max_entries bypasses the check. Since percpu_array_map_gen_lookup()
inlines the original template's index_mask as a JIT immediate, a lookup
on the replacement map can access pptrs[] out of bounds.
Point percpu_array_map_ops.map_meta_equal to array_map_meta_equal(),
which already enforces the max_entries equality check.
Add a selftest to verify that replacing a percpu array inner map with
a differently-sized one is rejected.
Fixes:
|
||
Ralf Lici
|
7f11449778 |
selftests: ovpn: reduce remaining ping flood counts
Commit |
||
Victor Nogueira
|
59afae2008 |
selftests/tc-testing: Add QFQ/CBS qlen underflow test
Since CBS was not calling reset for its child qdisc, there are scenarios where it could cause an underflow on its parent's qlen/backlog. When the parent is QFQ, a null-ptr deref could occur. Add a test case that reproduces the underflow followed by a null-ptr deref scenario. Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Victor Nogueira <victor@mojatatu.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
Alistair Popple
|
be3f38d05c |
mm/memory: fix spurious warning when unmapping device-private/exclusive pages
Device private and exclusive entries are only supported for anonymous
folios. This condition is tested in __migrate_device_pages() and
make_device_exclusive() using folio_test_anon(). However the unmap path
tests this assumption using vma_is_anonymous().
This is wrong because whilst anonymous VMAs can only contain folios where
folio_test_anon() is true the opposite relation does not hold. A folio
for which folio_test_anon() is true does not imply vma_is_anonymous() is
true. Such a condition can occur if for example a folio is part of a
private filebacked mapping.
In this case vma_is_anonymous() is false as the mapping is filebacked, but
folio_test_anon() may be true, thus permitting devices to migrate the
folio to device private memory. This can lead to the following spurious
warnings during process teardown:
[ 772.737706] ------------[ cut here ]------------
[ 772.739201] WARNING: mm/memory.c:1754 at unmap_page_range.cold+0x26/0x18a, CPU#17: hmm-tests/2041
[ 772.742050] Modules linked in: test_hmm nvidia_uvm(O) nvidia(O)
[ 772.743959] CPU: 17 UID: 0 PID: 2041 Comm: hmm-tests Tainted: G W O 7.0.0+ #387 PREEMPT(full)
[ 772.747104] Tainted: [W]=WARN, [O]=OOT_MODULE
[ 772.748509] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.17.0-0-gb52ca86e094d-prebuilt.qemu.org 04/01/2014
[ 772.752117] RIP: 0010:unmap_page_range.cold+0x26/0x18a
[ 772.753780] Code: 7e fe ff ff 48 89 4c 24 78 4c 89 44 24 38 e8 f2 ff b1 00 48 8b 4c 24 78 4c 8b 44 24 38 48 8b 44 24 18 48 83 78 48 00 74 04 90 <0f> 0b 90 48 89 ca b8 ff ff 37 00 48 c1 ea 03 48 c1 e0 2a 80 3c 02
[ 772.759602] RSP: 0018:ffff888112607550 EFLAGS: 00010286
[ 772.761310] RAX: ffff88811bbf4dc0 RBX: dffffc0000000000 RCX: ffffea03e9bfffd8
[ 772.763583] RDX: 1ffff1102377e9c1 RSI: 0000000000000008 RDI: ffff88811bbf4e08
[ 772.765914] RBP: 0000000000000006 R08: ffff8881059f7448 R09: ffffed10224c0e68
[ 772.768184] R10: ffff888112607347 R11: 0000000000000001 R12: 0000000000000001
[ 772.770461] R13: ffffea03e9bfffc0 R14: ffff888112607908 R15: ffffea03e9bfffc0
[ 772.772782] FS: 00007f327caa2780(0000) GS:ffff888427b7d000(0000) knlGS:0000000000000000
[ 772.775328] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 772.777187] CR2: 00007f327ca89000 CR3: 00000001994d5000 CR4: 00000000000006f0
[ 772.779135] Call Trace:
[ 772.779792] <TASK>
[ 772.780317] ? dmirror_interval_invalidate+0x1a3/0x290 [test_hmm]
[ 772.781873] ? vm_normal_page_pud+0x2b0/0x2b0
[ 772.782992] ? __rwlock_init+0x150/0x150
[ 772.784006] ? lock_release+0x216/0x2b0
[ 772.785008] ? __mmu_notifier_invalidate_range_start+0x505/0x6e0
[ 772.786522] ? lock_release+0x216/0x2b0
[ 772.787498] ? unmap_single_vma+0xb6/0x210
[ 772.788573] unmap_vmas+0x27d/0x520
[ 772.789506] ? unmap_single_vma+0x210/0x210
[ 772.790607] ? mas_update_gap.part.0+0x620/0x620
[ 772.791834] unmap_region+0x19e/0x350
[ 772.792769] ? remove_vma+0x130/0x130
[ 772.793684] ? mas_alloc_nodes+0x1f2/0x300
[ 772.794730] vms_complete_munmap_vmas+0x8c1/0xe20
[ 772.795926] ? unmap_region+0x350/0x350
[ 772.796917] do_vmi_align_munmap+0x36a/0x4e0
[ 772.798018] ? lock_release+0x216/0x2b0
[ 772.799024] ? vma_shrink+0x620/0x620
[ 772.799983] do_vmi_munmap+0x150/0x2c0
[ 772.800939] __vm_munmap+0x161/0x2c0
[ 772.801872] ? expand_downwards+0xd60/0xd60
[ 772.802948] ? clockevents_program_event+0x1ef/0x540
[ 772.804217] ? lock_release+0x216/0x2b0
[ 772.805158] __x64_sys_munmap+0x59/0x80
[ 772.805776] do_syscall_64+0xfc/0x670
[ 772.806336] ? irqentry_exit+0xda/0x580
[ 772.806976] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 772.807772] RIP: 0033:0x7f327cbb2717
[ 772.808323] Code: 73 01 c3 48 8b 0d f9 76 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d c9 76 0d 00 f7 d8 64 89 01 48
[ 772.811337] RSP: 002b:00007ffde7f57d38 EFLAGS: 00000202 ORIG_RAX: 000000000000000b
[ 772.812564] RAX: ffffffffffffffda RBX: 00007f327cc9c000 RCX: 00007f327cbb2717
[ 772.813733] RDX: 0000000000000000 RSI: 0000000000400000 RDI: 00007f327c289000
[ 772.814867] RBP: 0000000000421360 R08: 000000000000001a R09: 0000000000000000
[ 772.815991] R10: 0000000000000003 R11: 0000000000000202 R12: 00007ffde7f57d74
[ 772.817121] R13: 00007f327c689010 R14: 0000000000100000 R15: 00007f327c289000
[ 772.818272] </TASK>
[ 772.818614] irq event stamp: 0
[ 772.819159] hardirqs last enabled at (0): [<0000000000000000>] 0x0
[ 772.820174] hardirqs last disabled at (0): [<ffffffff82a57ab3>] copy_process+0x19f3/0x6440
[ 772.821511] softirqs last enabled at (0): [<ffffffff82a57b00>] copy_process+0x1a40/0x6440
[ 772.822869] softirqs last disabled at (0): [<0000000000000000>] 0x0
[ 772.823871] ---[ end trace 0000000000000000 ]---
Fix this by using the same check for folio_test_anon() in
zap_nonpresent_ptes(). Also add a hmm-test case for this.
Link: https://lore.kernel.org/20260501065116.2057242-1-apopple@nvidia.com
Fixes:
|
||
Luiz Capitulino
|
3432cbb291 |
selftests/mm: run_vmtests.sh: fix destructive tests invocation
Destructive tests should be invoked with -d command-line option, but this
won't work today since 'd' is missing in getopts command-line. This
commit fixes it.
Link: https://lore.kernel.org/214fd9e4-5398-4c26-859e-c982c2e277c3@redhat.com
Fixes:
|
||
|
Linus Torvalds
|
59a62ea458 |
sched_ext: Fixes for v7.1-rc3
Bulk is hardening of the new sub-scheduler infrastructure.
- UAFs and lifecycle bugs on the sub-sched attach/detach paths: parent
sub_kset freed under a racing child, list_del_rcu on an uninitialized
list head, ops->priv stomped by concurrent attach/detach, and a UAF in
the init-failure error path.
- Task state-machine reorg closing concurrent enable-vs-dead races: a
task exiting during the unlocked init window could trip NULL ops
derefs or skip exit_task() cleanup.
- A scx_link_sched() self-deadlock on scx_sched_lock.
- isolcpus: stop dereferencing the now-RCU-protected HK_TYPE_DOMAIN
cpumask without RCU, and stop rejecting BPF schedulers when only
cpuset isolated partitions are active.
- PREEMPT_RT: disable irq_work runs in hardirq context so dumps show the
failing task rather than the irq_work kthread.
- Assorted !CONFIG_EXT_SUB_SCHED, randconfig, and selftest build fixes.
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Merge tag 'sched_ext-for-7.1-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext fixes from Tejun Heo:
"The bulk of this is hardening of the new sub-scheduler infrastructure.
- UAFs and lifecycle bugs on the sub-sched attach/detach paths:
parent sub_kset freed under a racing child, list_del_rcu on an
uninitialized list head, ops->priv stomped by concurrent
attach/detach, and a UAF in the init-failure error path
- Task state-machine reorg closing concurrent enable-vs-dead races: a
task exiting during the unlocked init window could trip NULL ops
derefs or skip exit_task() cleanup
- A scx_link_sched() self-deadlock on scx_sched_lock
- isolcpus: stop dereferencing the now-RCU-protected HK_TYPE_DOMAIN
cpumask without RCU, and stop rejecting BPF schedulers when only
cpuset isolated partitions are active
- PREEMPT_RT: disable irq_work runs in hardirq context so dumps show
the failing task rather than the irq_work kthread
- Assorted !CONFIG_EXT_SUB_SCHED, randconfig, and selftest build
fixes"
* tag 'sched_ext-for-7.1-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
sched_ext: Use HK_TYPE_DOMAIN_BOOT to detect isolcpus= domain isolation
sched_ext: Defer sub_kset base put to scx_sched_free_rcu_work
sched_ext: INIT_LIST_HEAD() &sch->all in scx_alloc_and_add_sched()
sched_ext: Drop NONE early return in scx_disable_and_exit_task()
sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path
sched_ext: Clear ops->priv on scx_alloc_and_add_sched() error paths
sched_ext: Fix ops->priv clobber on concurrent attach/detach
selftests/sched_ext: Fix build error in dequeue selftest
sched_ext: Handle SCX_TASK_NONE in disable/switched_from paths
sched_ext: Close sub-sched init race with post-init DEAD recheck
sched_ext: Close root-enable vs sched_ext_dead() race with SCX_TASK_INIT_BEGIN
sched_ext: Replace SCX_TASK_OFF_TASKS flag with SCX_TASK_DEAD state
sched_ext: Inline scx_init_task() and move RESET_RUNNABLE_AT into scx_set_task_state()
sched_ext: Cleanups in preparation for the SCX_TASK_INIT_BEGIN/DEAD work
sched_ext: Use IRQ_WORK_INIT_HARD() to initialize sch->disable_irq_work
sched_ext: Fix !CONFIG_EXT_SUB_SCHED build warnings
sched_ext: Drop unused scx_find_sub_sched() stub
sched_ext: Move scx_error() out of scx_link_sched()'s lock region
|
||
|
Linus Torvalds
|
0913b580f8 |
cgroup: Fixes for v7.1-rc3
- cpuset fixes:
- Partition invalidation could return CPUs still in use by sibling
partitions, producing overlapping effective_cpus.
- cpuset_can_attach() over-reserved DL bandwidth on moves that stayed
within the same root domain.
- Pending DL migration state leaked into later attaches when a later
can_attach() check failed.
- Reorder PF_EXITING and __GFP_HARDWALL checks so dying tasks can
allocate from any node and exit quickly.
- dmem: propagate -ENOMEM instead of spinning forever when the fallback
pool allocation also fails.
- selftests/cgroup: percpu test error-path leak, bogus numeric
comparison of cpuset strings, and a zero-length read() that silently
passed OOM-kill tests.
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Merge tag 'cgroup-for-7.1-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
- cpuset fixes:
- Partition invalidation could return CPUs still in use by sibling
partitions, producing overlapping effective_cpus
- cpuset_can_attach() over-reserved DL bandwidth on moves that
stayed within the same root domain
- Pending DL migration state leaked into later attaches when a
later can_attach() check failed
- Reorder PF_EXITING and __GFP_HARDWALL checks so dying tasks can
allocate from any node and exit quickly
- dmem: propagate -ENOMEM instead of spinning forever when the fallback
pool allocation also fails
- selftests/cgroup: percpu test error-path leak, bogus numeric
comparison of cpuset strings, and a zero-length read() that silently
passed OOM-kill tests
* tag 'cgroup-for-7.1-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup/cpuset: Return only actually allocated CPUs during partition invalidation
selftests/cgroup: Fix error path leaks in test_percpu_basic
cgroup/cpuset: Reserve DL bandwidth only for root-domain moves
cgroup/cpuset: Reset DL migration state on can_attach() failure
selftests/cgroup: Fix string comparison in write_test
selftests/cgroup: Fix cg_read_strcmp() empty string comparison
cgroup/dmem: Return -ENOMEM on failed pool preallocation
cgroup/cpuset: move PF_EXITING check before __GFP_HARDWALL in cpuset_current_node_allowed()
|
||
|
Linus Torvalds
|
e1914add27 |
Arm:
* Add the pKVM side of the workaround for ARM's erratum 4193714, provided
that the EL3 firmware does its part of the job. KVM will refuse to
initialise otherwise.
- Correctly handle 52bit VAs for guest EL2 stage-1 translations when
running under NV with E2H==0.
* Correctly deal with permission faults in guest_memfd memslots.
* Fix the steal-time selftest after the infrastructure was reworked.
* Make sure the host cannot pass a non-sensical clock update to the
EL2 tracing infrastructure.
* Appoint Steffen Eiden as a reviewer in anticipation of the KVM/s390
ability to run arm64 guests, which will inevitably lead to arm64
code being directly used on s390.
* Make sure that EL2 is configured with both exception entry and exit
being Context Synchronization Events.
* Handle the current vcpu being NULL on EL2 panic.
* Fix the selftest_vcpu memcache being empty at the point of donation or
sharing.
* Check that the memcache has enough capacity before engaging on the
share/donate path.
* Fix __deactivate_fgt() to use its parameter rather than a variable
in the macro context.
s390:
* Fix array overrun with large amounts of PCI devices.
x86:
* Never use L0's PAUSE loop exiting while L2 is running, since it's
unlikely that a nested guest will help solving the hypervisor's
spinlock contention
* Fix emulation of MOVNTDQA.
* Fix typo in Xen hypercall tracepoint
* Add back an optimization that was left behind when recently
fixing a bug.
* Add module parameter to disable CET, whose implementation seems
to have issues. For now it remains enabled by default.
Generic:
* Reject offset causing an unsigned overflow in kvm_reset_dirty_gfn()
Documentation:
* Update stale links
Selftests:
* Fix guest_memfd_test with host page size > guest page size.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"arm64:
- Add the pKVM side of the workaround for ARM's erratum 4193714,
provided that the EL3 firmware does its part of the job. KVM will
refuse to initialise otherwise
- Correctly handle 52bit VAs for guest EL2 stage-1 translations when
running under NV with E2H==0
- Correctly deal with permission faults in guest_memfd memslots
- Fix the steal-time selftest after the infrastructure was reworked
- Make sure the host cannot pass a non-sensical clock update to the
EL2 tracing infrastructure
- Appoint Steffen Eiden as a reviewer in anticipation of the KVM/s390
ability to run arm64 guests, which will inevitably lead to arm64
code being directly used on s390
- Make sure that EL2 is configured with both exception entry and exit
being Context Synchronization Events
- Handle the current vcpu being NULL on EL2 panic
- Fix the selftest_vcpu memcache being empty at the point of donation
or sharing
- Check that the memcache has enough capacity before engaging on the
share/donate path
- Fix __deactivate_fgt() to use its parameter rather than a variable
in the macro context
s390:
- Fix array overrun with large amounts of PCI devices
x86:
- Never use L0's PAUSE loop exiting while L2 is running, since it's
unlikely that a nested guest will help solving the hypervisor's
spinlock contention
- Fix emulation of MOVNTDQA
- Fix typo in Xen hypercall tracepoint
- Add back an optimization that was left behind when recently fixing
a bug
- Add module parameter to disable CET, whose implementation seems to
have issues. For now it remains enabled by default
Generic:
- Reject offset causing an unsigned overflow in kvm_reset_dirty_gfn()
Documentation:
- Update stale links
Selftests:
- Fix guest_memfd_test with host page size > guest page size"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (22 commits)
KVM: VMX: introduce module parameter to disable CET
KVM: x86: Swap the dst and src operand for MOVNTDQA
KVM: x86: use again the flush argument of __link_shadow_page()
KVM: selftests: Ensure gmem file sizes are multiple of host page size
Documentation: kvm: update links in the references section of AMD Memory Encryption
KVM: nSVM: Never use L0's PAUSE loop exiting while L2 is running
KVM: x86: Fix Xen hypercall tracepoint argument assignment
KVM: Reject wrapped offset in kvm_reset_dirty_gfn()
KVM: arm64: Pre-check vcpu memcache for host->guest donate
KVM: arm64: Pre-check vcpu memcache for host->guest share
KVM: arm64: Seed pkvm_ownership_selftest vcpu memcache
KVM: arm64: Fix __deactivate_fgt macro parameter typo
KVM: arm64: Guard against NULL vcpu on VHE hyp panic path
KVM: arm64: Make EL2 exception entry and exit context-synchronization events
MAINTAINERS: Add Steffen as reviewer for KVM/arm64
KVM: arm64: Remove potential UB on nvhe tracing clock update
KVM: selftests: arm64: Fix steal_time test after UAPI refactoring
KVM: arm64: Handle permission faults with guest_memfd
KVM: arm64: nv: Consider the DS bit when translating TCR_EL2
KVM: arm64: Work around C1-Pro erratum 4193714 for protected guests
...
|
||
Yu Miao
|
7d8f3158a5 |
selftests/cgroup: Fix error path leaks in test_percpu_basic
When cg_name_indexed() returns NULL partway through the child creation
loop, the code returned -1 without running cleanup_children and cleanup.
That left the `parent` pathname allocation unreleased and did not remove
child cgroup directories already created under the parent. Fix by jumping
to cleanup_children instead of returning.
When cg_create() fails, `child` (the pathname from cg_name_indexed())
was not freed before cleanup_children. Fix by freeing `child` before
branching to cleanup_children.
Fixes:
|
||
Yi Lai
|
0bf1b4dda2 |
selftests/rdma: explicitly skip tests when required modules are missing
Currently, the rdma rxe selftests fail with an exit code of 1 when
required kernel modules are not present. This causes spurious failures
in environments where these modules might not be compiled or available.
Include the standard kselftest 'ktap_helpers.sh' and replace the
hardcoded error exits with '$KSFT_SKIP'. This ensures the tests are
properly marked as skipped rather than failed.
Fixes:
|
||
Ming Lei
|
87d0740b7c |
selftests: ublk: cap nthreads to kernel's actual nr_hw_queues
dev->nthreads is derived from the user-requested queue count before the
ADD command, but the kernel may reduce nr_hw_queues (capped to
nr_cpu_ids). When the VM has fewer CPUs than requested queues, the
daemon creates more handler threads than there are kernel queues.
In non-batch mode, the extra threads access uninitialized queues
(q_depth=0), submit zero io_uring SQEs, and block forever in
io_cqring_wait. In batch mode, the extra threads cause similar hangs
during device removal.
In both cases, the stuck threads prevent the daemon from closing the
char device, holding the last ublk_device reference and causing
ublk_ctrl_del_dev() to hang in wait_event_interruptible().
Fix by capping dev->nthreads to the kernel-returned nr_hw_queues after
the ADD command completes. per_io_tasks mode is excluded because threads
interleave across all queues, so nthreads > nr_hw_queues is valid.
Fixes:
|
||
|
Sean Christopherson
|
87c810160e |
KVM: selftests: Ensure gmem file sizes are multiple of host page size
When creating a guest_memfd file and associated memslot to validate shared
guest memory, size the file+memslot to the maximum of the host or guest
page size. Attempting to allocate a single guest page will fail if the
host page size is greater than the guest page size, as KVM requires that
the size of memslots and guest_memfd files are a multiple of the host page
size.
For simplicity, verify the entire file can be shared between guest and host,
e.g. instead of trying to validate "partial" mappings.
Fixes:
|
||
Jakub Kicinski
|
6e8ae9d805 |
selftests: drv-net: add shaper test for duplicate leaves
Add test exercising duplicate leaves. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Link: https://patch.msgid.link/20260510192904.3987113-5-kuba@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
Yazhou Tang
|
344a00712c |
selftests/bpf: Add test for large offset bpf-to-bpf call
Add a selftest to verify the verifier and JIT behavior when handling
bpf-to-bpf calls with relative jump offsets exceeding the s16 boundary.
The test utilizes an inline assembly block with ".rept 32765" to generate
a massive dummy subprogram. By placing this padding between the main
program and the target subprogram, it forces the verifier to process a
bpf-to-bpf call where the imm field exceeds the s16 range.
- When JIT is enabled, it asserts that the program is successfully loaded
and executes correctly to return the expected value. Since the fix
does not change the JIT behavior, the test passes whether the fix is
applied or not.
- When JIT is disabled, it also asserts that the program is successfully
loaded and executes correctly to return the expected value 3.
- Before the fix, the verifier rewrites the call instruction with a
truncated offset (here 32768 -> -32768) and lets it pass. When the
program is executed, the call instruction will go to a wrong target
(the landing pad) instead of the intended subprogram, then return -1
and fail.
- After the fix, the verifier correctly handles the large offset and
allows it to pass. The program then executes correctly to return the
expected value 3.
Co-developed-by: Tianci Cao <ziye@zju.edu.cn>
Signed-off-by: Tianci Cao <ziye@zju.edu.cn>
Co-developed-by: Shenghao Yuan <shenghaoyuan0928@163.com>
Signed-off-by: Shenghao Yuan <shenghaoyuan0928@163.com>
Signed-off-by: Yazhou Tang <tangyazhou518@outlook.com>
Acked-by: Xu Kuohai <xukuohai@huawei.com>
Link: https://lore.kernel.org/r/20260506094714.419842-4-tangyazhou@zju.edu.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
||
Andrea Righi
|
3788e32516 |
selftests/sched_ext: Fix build error in dequeue selftest
Building the dequeue selftest with newer compilers (e.g., gcc 16)
triggers the following error:
dequeue.c:28:22: error: variable 'sum' set but not used
The 'volatile' qualifier prevents the writes from being optimized away,
but does not silence the unused variable 'sum' is indeed only written
and never read.
Consume 'sum' via an empty asm() with a register input constraint. This
forces the compiler to keep the accumulated value (preserving the CPU
stress loop) and avoiding the build error.
Fixes:
|
||
Hongfu Li
|
2a3d7256fa |
selftests/cgroup: Fix string comparison in write_test
Use string comparison (!=) instead of numeric comparison (-ne) for cpuset values like "0-1". For example: $ [[ "0-1" != "2-3" ]] && echo "true" || echo "false" true $ [[ "0-1" -ne "2-3" ]] && echo "true" || echo "false" false Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Hongfu Li
|
e32e6f0216 |
selftests/cgroup: Fix cg_read_strcmp() empty string comparison
cg_read_strcmp() allocated a buffer sized to strlen(expected) + 1,
then passed it to read_text() which calls read(fd, buf, size-1).
When comparing against an empty string (""), strlen("") = 0 gives a
1-byte buffer, and read() is asked to read 0 bytes. The file content
is never actually read, so strcmp("", buf) always returns 0 regardless
of the real content. This caused cg_test_proc_killed() to always
report the cgroup as empty immediately, making OOM tests pass without
verifying that processes were killed.
Signed-off-by: Hongfu Li <lihongfu@kylinos.cn>
Signed-off-by: Tejun Heo <tj@kernel.org>
|
||
|
Linus Torvalds
|
515186b7be |
bpf-fixes
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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Alexei Starovoitov:
- Fix sk_local_storage diag dump via netlink (Amery Hung)
- Fix off-by-one in arena direct-value access (Junyoung Jang)
- Reject TCP_NODELAY in bpf-tcp congestion control (KaFai Wan)
- Fix type confusion in bpf_*_sock() (Kuniyuki Iwashima)
- Reject TX-only AF_XDP sockets (Linpu Yu)
- Don't run arg-tracking analysis twice on main subprog (Paul Chaignon)
- Fix NULL pointer dereference in bpf_sk_storage_clone and fib lookup
(Weiming Shi)
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf: Fix off-by-one boundary validation in arena direct-value access
xskmap: reject TX-only AF_XDP sockets
bpf: Don't run arg-tracking analysis twice on main subprog
bpf: Free reuseport cBPF prog after RCU grace period.
bpf: tcp: Fix type confusion in sol_tcp_sockopt().
bpf: tcp: Fix type confusion in bpf_skc_to_tcp6_sock().
bpf: tcp: Fix type confusion in bpf_skc_to_tcp_sock().
mptcp: bpf: Fix type confusion in bpf_mptcp_sock_from_subflow()
selftest: bpf: Add test for bpf_tcp_sock() and RAW socket.
bpf: tcp: Fix type confusion in bpf_tcp_sock().
tools/headers: Regenerate stddef.h to fix BPF selftests
bpf: Fix sk_local_storage diag dumping uninitialized special fields
bpf: Fix NULL pointer dereference in bpf_skb_fib_lookup()
sockmap: Fix sk_psock_drop() race vs sock_map_{unhash,close,destroy}().
bpf: Fix NULL pointer dereference in bpf_sk_storage_clone and diag paths
selftests/bpf: Verify bpf-tcp-cc rejects TCP_NODELAY
selftests/bpf: Test TCP_NODELAY in TCP hdr opt callbacks
bpf: Reject TCP_NODELAY in bpf-tcp-cc
bpf: Reject TCP_NODELAY in TCP header option callbacks
|
||
|
Linus Torvalds
|
7f00232152 |
Miscellaneous scheduler fixes:
- Fix spurious failures in rseq self-tests (Mark Brown)
- Fix rseq rseq::cpu_id_start ABI regression due to
TCMalloc's creative use of the supposedly read-only field.
The fix is to introduce a new ABI variant based on
a new (larger) rseq area registration size, to keep
the TCMalloc use of rseq backwards compatible on new kernels.
(Thomas Gleixner)
- Fix wakeup_preempt_fair() for not waking up task (Vincent Guittot)
- Fix s64 mult overflow in vruntime_eligible() (Zhan Xusheng)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-05-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
- Fix spurious failures in rseq self-tests (Mark Brown)
- Fix rseq rseq::cpu_id_start ABI regression due to TCMalloc's creative
use of the supposedly read-only field
The fix is to introduce a new ABI variant based on a new (larger)
rseq area registration size, to keep the TCMalloc use of rseq
backwards compatible on new kernels (Thomas Gleixner)
- Fix wakeup_preempt_fair() for not waking up task (Vincent Guittot)
- Fix s64 mult overflow in vruntime_eligible() (Zhan Xusheng)
* tag 'sched-urgent-2026-05-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Fix wakeup_preempt_fair() for not waking up task
sched/fair: Fix overflow in vruntime_eligible()
selftests/rseq: Expand for optimized RSEQ ABI v2
rseq: Reenable performance optimizations conditionally
rseq: Implement read only ABI enforcement for optimized RSEQ V2 mode
selftests/rseq: Validate legacy behavior
selftests/rseq: Make registration flexible for legacy and optimized mode
selftests/rseq: Skip tests if time slice extensions are not available
rseq: Revert to historical performance killing behaviour
rseq: Don't advertise time slice extensions if disabled
rseq: Protect rseq_reset() against interrupts
rseq: Set rseq::cpu_id_start to 0 on unregistration
selftests/rseq: Don't run tests with runner scripts outside of the scripts
|