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| author | Jakub Kicinski <kuba@kernel.org> | 2026-02-26 21:20:47 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-03-05 23:11:05 +0300 |
| commit | 0b1324cdd8de9f54f9daf689a4ae59783c333510 (patch) | |
| tree | 991952409fe93bd0ea73f8683b497e31bfe6952f /lib | |
| parent | ab99e1167293726f016360a5dbbbc10386fd7d66 (diff) | |
| parent | abacaf559950eec0d99d37ff6b92049409af5943 (diff) | |
| download | linux-0b1324cdd8de9f54f9daf689a4ae59783c333510.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-7.0-rc3).
No conflicts.
Adjacent changes:
net/netfilter/nft_set_rbtree.c
fb7fb4016300 ("netfilter: nf_tables: clone set on flush only")
3aea466a4399 ("netfilter: nft_set_rbtree: don't disable bh when acquiring tree lock")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 5 | ||||
| -rw-r--r-- | lib/debugobjects.c | 19 |
2 files changed, 21 insertions, 3 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 318df4c75454..93f356d2b3d9 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -630,7 +630,7 @@ config DEBUG_FORCE_WEAK_PER_CPU config WARN_CONTEXT_ANALYSIS bool "Compiler context-analysis warnings" - depends on CC_IS_CLANG && CLANG_VERSION >= 220000 + depends on CC_IS_CLANG && CLANG_VERSION >= 220100 # Branch profiling re-defines "if", which messes with the compiler's # ability to analyze __cond_acquires(..), resulting in false positives. depends on !TRACE_BRANCH_PROFILING @@ -641,7 +641,7 @@ config WARN_CONTEXT_ANALYSIS and releasing user-definable "context locks". Clang's name of the feature is "Thread Safety Analysis". Requires - Clang 22 or later. + Clang 22.1.0 or later. Produces warnings by default. Select CONFIG_WERROR if you wish to turn these warnings into errors. @@ -760,6 +760,7 @@ source "mm/Kconfig.debug" config DEBUG_OBJECTS bool "Debug object operations" + depends on PREEMPT_COUNT || !DEFERRED_STRUCT_PAGE_INIT depends on DEBUG_KERNEL help If you say Y here, additional code will be inserted into the diff --git a/lib/debugobjects.c b/lib/debugobjects.c index 89a1d6745dc2..12f50de85b62 100644 --- a/lib/debugobjects.c +++ b/lib/debugobjects.c @@ -398,9 +398,26 @@ static void fill_pool(void) atomic_inc(&cpus_allocating); while (pool_should_refill(&pool_global)) { + gfp_t gfp = __GFP_HIGH | __GFP_NOWARN; HLIST_HEAD(head); - if (!kmem_alloc_batch(&head, obj_cache, __GFP_HIGH | __GFP_NOWARN)) + /* + * Allow reclaim only in preemptible context and during + * early boot. If not preemptible, the caller might hold + * locks causing a deadlock in the allocator. + * + * If the reclaim flag is not set during early boot then + * allocations, which happen before deferred page + * initialization has completed, will fail. + * + * In preemptible context the flag is harmless and not a + * performance issue as that's usually invoked from slow + * path initialization context. + */ + if (preemptible() || system_state < SYSTEM_SCHEDULING) + gfp |= __GFP_KSWAPD_RECLAIM; + + if (!kmem_alloc_batch(&head, obj_cache, gfp)) break; guard(raw_spinlock_irqsave)(&pool_lock); |