[PATCH for-7.1-fixes 1/2] rhashtable: add no_sync_grow option

[PATCH for-7.1-fixes 1/2] rhashtable: add no_sync_grow option

[Tejun Heo]

The sync grow path on insert calls get_random_u32() and kvmalloc(), both of
which take regular spinlocks and are unsafe under raw_spinlock_t. Add an
opt-in flag that skips the >100% grow check; inserts always succeed by
appending to the chain, and the deferred worker still grows at >75% load.

sched_ext already uses rhashtable under raw_spinlock_t and is technically
broken, though hard to hit in practice because the tables stay small.

Cc: stable@vger.kernel.org # prerequisite for the next sched_ext fix
Signed-off-by: Tejun Heo <tj@kernel.org>
---
Hello,

The follow-up sched_ext patch is a fix targeting sched_ext/for-7.1-fixes
which I'd like to send Linus's way sooner than later. Would it be okay
to route both patches through sched_ext/for-7.1-fixes? If you'd prefer
to route the rhashtable change differently, that works too. Please let
me know, thanks.

Based on linus/master (3cd8b194bf34).

 include/linux/rhashtable-types.h | 2 ++
 include/linux/rhashtable.h       | 5 ++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/include/linux/rhashtable-types.h b/include/linux/rhashtable-types.h
index 015c8298bebc..555eea6077f8 100644
--- a/include/linux/rhashtable-types.h
+++ b/include/linux/rhashtable-types.h
@@ -50,6 +50,7 @@ typedef int (*rht_obj_cmpfn_t)(struct rhashtable_compare_arg *arg,
  * @max_size: Maximum size while expanding
  * @min_size: Minimum size while shrinking
  * @automatic_shrinking: Enable automatic shrinking of tables
+ * @no_sync_grow: Skip sync grow on insert (allows inserts under raw_spinlock_t)
  * @hashfn: Hash function (default: jhash2 if !(key_len % 4), or jhash)
  * @obj_hashfn: Function to hash object
  * @obj_cmpfn: Function to compare key with object
@@ -62,6 +63,7 @@ struct rhashtable_params {
 	unsigned int		max_size;
 	u16			min_size;
 	bool			automatic_shrinking;
+	bool			no_sync_grow;
 	rht_hashfn_t		hashfn;
 	rht_obj_hashfn_t	obj_hashfn;
 	rht_obj_cmpfn_t		obj_cmpfn;
diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h
index 0480509a6339..a977a597d288 100644
--- a/include/linux/rhashtable.h
+++ b/include/linux/rhashtable.h
@@ -197,11 +197,14 @@ static inline bool rht_shrink_below_30(const struct rhashtable *ht,
  * rht_grow_above_100 - returns true if nelems > table-size
  * @ht:		hash table
  * @tbl:	current table
+ *
+ * Returns false if the caller opted out of synchronous grow.
  */
 static inline bool rht_grow_above_100(const struct rhashtable *ht,
 				      const struct bucket_table *tbl)
 {
-	return atomic_read(&ht->nelems) > tbl->size &&
+	return !ht->p.no_sync_grow &&
+		atomic_read(&ht->nelems) > tbl->size &&
 		(!ht->p.max_size || tbl->size < ht->p.max_size);
 }
 
-- 
2.53.0

[PATCH for-7.1-fixes 2/2] sched_ext: mark scx_sched_hash and dsq_hash no_sync_grow

[Tejun Heo]

Both are inserted/removed under raw_spinlock_t (scx_sched_lock and dsq->lock
respectively). rhashtable's sync grow path is unsafe under raw_spinlock_t.
Set no_sync_grow so inserts only ever take the bucket bit-spin lock; the
deferred worker continues to grow the table.

Fixes: f0e1a0643a59 ("sched_ext: Implement BPF extensible scheduler class")
Fixes: 25037af712eb ("sched_ext: Add rhashtable lookup for sub-schedulers")
Cc: stable@vger.kernel.org # v6.11+
Signed-off-by: Tejun Heo <tj@kernel.org>
---
 kernel/sched/ext.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index 012ca8bd70fb..3f1467fde075 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -32,6 +32,7 @@ static const struct rhashtable_params scx_sched_hash_params = {
 	.key_len		= sizeof_field(struct scx_sched, ops.sub_cgroup_id),
 	.key_offset		= offsetof(struct scx_sched, ops.sub_cgroup_id),
 	.head_offset		= offsetof(struct scx_sched, hash_node),
+	.no_sync_grow		= true,	/* inserted under scx_sched_lock */
 };
 
 static struct rhashtable scx_sched_hash;
@@ -122,6 +123,7 @@ static const struct rhashtable_params dsq_hash_params = {
 	.key_len		= sizeof_field(struct scx_dispatch_q, id),
 	.key_offset		= offsetof(struct scx_dispatch_q, id),
 	.head_offset		= offsetof(struct scx_dispatch_q, hash_node),
+	.no_sync_grow		= true,	/* removed under dsq->lock */
 };
 
 static LLIST_HEAD(dsqs_to_free);
-- 
2.53.0

Re: [PATCH for-7.1-fixes 1/2] rhashtable: add no_sync_grow option

[Herbert Xu]

On Thu, Apr 16, 2026 at 02:24:48PM -1000, Tejun Heo wrote:
> The sync grow path on insert calls get_random_u32() and kvmalloc(), both of

Where does the sync grow path call kvmalloc? I think it's supposed
to use GFP_ATOMIC kmalloc only.  Only the normal growth path does
the kvmalloc for a linear hash table.  The emergency path is supposed
to do page-by-page allocations to minimise failures.

As to get_random_u32, we can probably avoid doing it for emergency
growing and continue to reuse the existing seed.

Thanks,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

Re: [PATCH for-7.1-fixes 1/2] rhashtable: add no_sync_grow option

[Tejun Heo]

Hello,

On Fri, Apr 17, 2026 at 08:43:30AM +0800, Herbert Xu wrote:
> On Thu, Apr 16, 2026 at 02:24:48PM -1000, Tejun Heo wrote:
> > The sync grow path on insert calls get_random_u32() and kvmalloc(), both of
> 
> Where does the sync grow path call kvmalloc? I think it's supposed

Oops, that's a mistake. I meant GFP_ATOMIC kmalloc allocation. kmalloc uses
regular spin_lock so can't be called under raw_spin_lock. There's the new
kmalloc_nolock() but that means even smaller reserve size, so higher chance
of failing. I'm not sure it can even accomodate larger allocations.

Another aspect is that for some use cases, it's more problematic to fail
insertion than delaying hash table resize (e.g. that can lead to fork
failures on a thrashing system).

> to use GFP_ATOMIC kmalloc only.  Only the normal growth path does
> the kvmalloc for a linear hash table.  The emergency path is supposed
> to do page-by-page allocations to minimise failures.
> 
> As to get_random_u32, we can probably avoid doing it for emergency
> growing and continue to reuse the existing seed.

Oh, that's great.

Thanks.

-- 
tejun

Re: [PATCH for-7.1-fixes 1/2] rhashtable: add no_sync_grow option

[Herbert Xu]

On Thu, Apr 16, 2026 at 02:53:41PM -1000, Tejun Heo wrote:
> 
> Oops, that's a mistake. I meant GFP_ATOMIC kmalloc allocation. kmalloc uses
> regular spin_lock so can't be called under raw_spin_lock. There's the new
> kmalloc_nolock() but that means even smaller reserve size, so higher chance
> of failing. I'm not sure it can even accomodate larger allocations.

We should at least try to grow even if it fails.

> Another aspect is that for some use cases, it's more problematic to fail
> insertion than delaying hash table resize (e.g. that can lead to fork
> failures on a thrashing system).

rhashtable is meant to grow way before you reach 100% occupancy.
So the fact that you even reached this point means that something
has gone terribly wrong.

Is this failure reproducible?

I had a look at kernel/sched/ext.c and all the calls to rhashtable
insertion come from thread context.  So why does it even use a
raw spinlock?

Cheers,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

Re: [PATCH for-7.1-fixes 1/2] rhashtable: add no_sync_grow option

[Herbert Xu]

On Thu, Apr 16, 2026 at 02:24:48PM -1000, Tejun Heo wrote:
> 
> The follow-up sched_ext patch is a fix targeting sched_ext/for-7.1-fixes
> which I'd like to send Linus's way sooner than later. Would it be okay
> to route both patches through sched_ext/for-7.1-fixes? If you'd prefer
> to route the rhashtable change differently, that works too. Please let
> me know, thanks.

As I said earlier, we should work out if this is really needed or
not.

But if it is needed, we did have this feature before.  It's called
insecure_elasticity which was removed because we moved all its users
off to better solutions.

We can always bring it back.

Cheers,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

Re: [PATCH for-7.1-fixes 1/2] rhashtable: add no_sync_grow option

[Tejun Heo]

Hello,

On Fri, Apr 17, 2026 at 09:11:12AM +0800, Herbert Xu wrote:
> On Thu, Apr 16, 2026 at 02:53:41PM -1000, Tejun Heo wrote:
> > 
> > Oops, that's a mistake. I meant GFP_ATOMIC kmalloc allocation. kmalloc uses
> > regular spin_lock so can't be called under raw_spin_lock. There's the new
> > kmalloc_nolock() but that means even smaller reserve size, so higher chance
> > of failing. I'm not sure it can even accomodate larger allocations.
> 
> We should at least try to grow even if it fails.
>
> > Another aspect is that for some use cases, it's more problematic to fail
> > insertion than delaying hash table resize (e.g. that can lead to fork
> > failures on a thrashing system).
> 
> rhashtable is meant to grow way before you reach 100% occupancy.
> So the fact that you even reached this point means that something
> has gone terribly wrong.
> 
> Is this failure reproducible?
> 
> I had a look at kernel/sched/ext.c and all the calls to rhashtable
> insertion come from thread context.  So why does it even use a
> raw spinlock?

Yeah, the DSQ conversion is incorrect. Sorry about that. In the current
master branch, there's another rhashtable - scx_sched_hash - which is
inserted under scx_sched_lock which is a raw spin lock. This is a bit
difficult to trigger because each insertion involves loading a subscheduler
which usually takes quite some time and the whole operatoin is serialized.
In a devel branch, I'm adding a unique thread ID to task rhashtable -
scx_tid_hash:

 git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext.git

which is initialized and populated when the root scheduler loads. As all
existing tasks are inserted during init, it ends up expanding the hashtable
rapidly and it's not difficult to make it hit the synchronous growth path.

- Build kernel and boot. Build the example schedulers - `make -C tools/sched_ext`

- Create a lot of dormant threads:

        stress-ng --pthread 1 --pthread-max 10000 --timeout 60s

- Run the qmap scheduler which enables tid hashing:

        tools/sched_ext/build/bin/scx_qmap

and the following lockdep triggers:

  [   34.344355] sched_ext: BPF scheduler "qmap" enabled
  [   35.999783] sched_ext: BPF scheduler "qmap" disabled (unregistered from user space)
  [   92.996704]
  [   92.996947] =============================
  [   92.997462] [ BUG: Invalid wait context ]
  [   92.997974] 7.0.0-work-08607-g4e2e9e22ddbe-dirty #423 Not tainted
  [   92.998759] -----------------------------
  [   92.999285] scx_enable_help/1907 is trying to lock:
  [   92.999903] ffff888237aa9450 (batched_entropy_u32.lock){..-.}-{3:3}, at: get_random_u32+0x40/0x270
  [   93.001047] other info that might help us debug this:
  [   93.001716] context-{5:5}
  [   93.002057] 6 locks held by scx_enable_help/1907:
  [   93.002677]  #0: ffffffff83a90d48 (scx_enable_mutex){+.+.}-{4:4}, at: scx_root_enable_workfn+0x2b/0xad0
  [   93.003872]  #1: ffffffff83a90e40 (scx_fork_rwsem){++++}-{0:0}, at: scx_root_enable_workfn+0x407/0xad0
  [   93.005053]  #2: ffffffff83a90f80 (scx_cgroup_ops_rwsem){++++}-{0:0}, at: scx_cgroup_lock+0x11/0x20
  [   93.006380]  #3: ffffffff83c3de28 (cgroup_mutex){+.+.}-{4:4}, at: scx_root_enable_workfn+0x436/0xad0
  [   93.007535]  #4: ffffffff83a90e88 (scx_tasks_lock){....}-{2:2}, at: scx_root_enable_workfn+0x511/0xad0
  [   93.008757]  #5: ffffffff83b77c98 (rcu_read_lock){....}-{1:3}, at: rhashtable_insert_slow+0x65/0x9e0
  [   93.009909] stack backtrace:
  [   93.010298] CPU: 2 UID: 0 PID: 1907 Comm: scx_enable_help Not tainted 7.0.0-work-08607-g4e2e9e22ddbe-dirty #423 PREEMPT(full)
  [   93.010300] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS unknown 02/02/2022
  [   93.010301] Sched_ext: qmap (enabling)
  [   93.010301] Call Trace:
  [   93.010304]  <TASK>
  [   93.010305]  dump_stack_lvl+0x50/0x70
  [   93.010307]  __lock_acquire+0x9e8/0x2760
  [   93.010314]  lock_acquire+0xb2/0x240
  [   93.010317]  get_random_u32+0x58/0x270
  [   93.010321]  bucket_table_alloc+0xa6/0x190
  [   93.010322]  rhashtable_insert_slow+0x8ac/0x9e0
  [   93.010325]  scx_root_enable_workfn+0x893/0xad0
  [   93.010328]  kthread_worker_fn+0x108/0x300
  [   93.010330]  kthread+0xfa/0x120
  [   93.010332]  ret_from_fork+0x175/0x320
  [   93.010334]  ret_from_fork_asm+0x1a/0x30
  [   93.010336]  </TASK>

Now, I can move the insertion out of the raw scx_tasks_lock; however, that
complicates init path as now it has to account for possible races against
task exit path.

Also, taking a step back, if rhashtable allows usage under raw spin locks,
isn't this broken regardless of how easy or difficult it may be to reproduce
the problem? Practically speaking, the scx_sched_hash one is unlikely to
trigger in real world; however, it is still theoretically possible and I'm
pretty positive that one would be able to create a repro case with the right
interference workload. It'd be contrived for sure but should be possible.

Thanks.

-- 
tejun

Re: [PATCH for-7.1-fixes 1/2] rhashtable: add no_sync_grow option

[Herbert Xu]

On Thu, Apr 16, 2026 at 09:38:52PM -1000, Tejun Heo wrote:
>
> Also, taking a step back, if rhashtable allows usage under raw spin locks,
> isn't this broken regardless of how easy or difficult it may be to reproduce
> the problem? Practically speaking, the scx_sched_hash one is unlikely to
> trigger in real world; however, it is still theoretically possible and I'm
> pretty positive that one would be able to create a repro case with the right
> interference workload. It'd be contrived for sure but should be possible.

rhashtable originated in networking where it tries very hard to
stop the hash table from ever degenerating into a linked list.

If your use-case is not as adversarial as that, and you're happy
for the hash table to degenerate into a linked-list in the worst
case, then yes it's aboslutely fine to not grow the table (or
try to grow it and fail with kmalloc_nolock).

It's just that we haven't had any users like this until now and
the feature that you want got removed because of that.

I'm more than happy to bring it back (commit 5f8ddeab10ce).

Cheers,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

Re: [PATCH for-7.1-fixes 1/2] rhashtable: add no_sync_grow option

[Tejun Heo]

Hello,

On Fri, Apr 17, 2026 at 03:51:20PM +0800, Herbert Xu wrote:
> rhashtable originated in networking where it tries very hard to
> stop the hash table from ever degenerating into a linked list.

I see.

> If your use-case is not as adversarial as that, and you're happy
> for the hash table to degenerate into a linked-list in the worst
> case, then yes it's aboslutely fine to not grow the table (or
> try to grow it and fail with kmalloc_nolock).

My use case is a bit different. I want a resizable hashtable which can be
used under raw spinlock and doesn't fail unnecessarily. My only adversary is
memory pressure and operation failures can be harmful. ie. If the system is
under severe memory pressure, hashtable becoming temporarily slower is not a
big problem as long as it restores reasonable operation once the system
recovers. However, if the insertion operation fails under e.g. sudden
network rx burst that drains atomic reserve, that can lead to fatal failure
- e.g. forks failing out of blue on a busy but mostly okay system. I think
this pretty much requires all hashtable growths to be asynchronous.

> It's just that we haven't had any users like this until now and
> the feature that you want got removed because of that.
> 
> I'm more than happy to bring it back (commit 5f8ddeab10ce).

That'd be great but looking at the commit, I'm not sure it reliably avoids
allocation in the synchronous path.

Thanks.

-- 
tejun

Re: [PATCH for-7.1-fixes 1/2] rhashtable: add no_sync_grow option

[Herbert Xu]

On Fri, Apr 17, 2026 at 06:25:22AM -1000, Tejun Heo wrote:
>
> That'd be great but looking at the commit, I'm not sure it reliably avoids
> allocation in the synchronous path.

If insecure_elasticity is set it should skip the slow path
altogether and just do the insertion unconditionally.  So
there will be no kmallocs at all.

Cheers,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

Re: [PATCH for-7.1-fixes 1/2] rhashtable: add no_sync_grow option

[Tejun Heo]

Hello,

On Sat, Apr 18, 2026 at 08:44:33AM +0800, Herbert Xu wrote:
> On Fri, Apr 17, 2026 at 06:25:22AM -1000, Tejun Heo wrote:
> >
> > That'd be great but looking at the commit, I'm not sure it reliably avoids
> > allocation in the synchronous path.
> 
> If insecure_elasticity is set it should skip the slow path
> altogether and just do the insertion unconditionally.  So
> there will be no kmallocs at all.

I see. Thanks, that should work. How should we go about reverting the
removal?

Thanks.

-- 
tejun

Re: [PATCH for-7.1-fixes 1/2] rhashtable: add no_sync_grow option

[Herbert Xu]

On Fri, Apr 17, 2026 at 02:52:57PM -1000, Tejun Heo wrote:
>
> I see. Thanks, that should work. How should we go about reverting the
> removal?

I'll work on that today and then you can include it in your
two-patch series.

Cheers,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

[PATCH] rhashtable: Restore insecure_elasticity toggle

[Herbert Xu]

Some users of rhashtable cannot handle insertion failures, and
are happy to accept the consequences of a hash table that having
very long chains.

Restore the insecure_elasticity toggle for these users.  In
addition to disabling the chain length checks, this also removes
the emergency resize that would otherwise occur when the hash
table occupancy hits 100% (an async resize is still scheduled
at 75%).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/include/linux/rhashtable-types.h b/include/linux/rhashtable-types.h
index 015c8298bebc..72082428d6c6 100644
--- a/include/linux/rhashtable-types.h
+++ b/include/linux/rhashtable-types.h
@@ -49,6 +49,7 @@ typedef int (*rht_obj_cmpfn_t)(struct rhashtable_compare_arg *arg,
  * @head_offset: Offset of rhash_head in struct to be hashed
  * @max_size: Maximum size while expanding
  * @min_size: Minimum size while shrinking
+ * @insecure_elasticity: Set to true to disable chain length checks
  * @automatic_shrinking: Enable automatic shrinking of tables
  * @hashfn: Hash function (default: jhash2 if !(key_len % 4), or jhash)
  * @obj_hashfn: Function to hash object
@@ -61,6 +62,7 @@ struct rhashtable_params {
 	u16			head_offset;
 	unsigned int		max_size;
 	u16			min_size;
+	bool			insecure_elasticity;
 	bool			automatic_shrinking;
 	rht_hashfn_t		hashfn;
 	rht_obj_hashfn_t	obj_hashfn;
diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h
index 0480509a6339..c793849d3f61 100644
--- a/include/linux/rhashtable.h
+++ b/include/linux/rhashtable.h
@@ -821,14 +821,15 @@ static __always_inline void *__rhashtable_insert_fast(
 		goto out;
 	}
 
-	if (elasticity <= 0)
+	if (elasticity <= 0 && !params->insecure_elasticity)
 		goto slow_path;
 
 	data = ERR_PTR(-E2BIG);
 	if (unlikely(rht_grow_above_max(ht, tbl)))
 		goto out_unlock;
 
-	if (unlikely(rht_grow_above_100(ht, tbl)))
+	if (unlikely(rht_grow_above_100(ht, tbl)) &&
+	    !params->insecure_elasticity)
 		goto slow_path;
 
 	/* Inserting at head of list makes unlocking free. */
diff --git a/lib/rhashtable.c b/lib/rhashtable.c
index 6074ed5f66f3..b60d55e5b19b 100644
--- a/lib/rhashtable.c
+++ b/lib/rhashtable.c
@@ -538,7 +538,7 @@ static void *rhashtable_lookup_one(struct rhashtable *ht,
 		return NULL;
 	}
 
-	if (elasticity <= 0)
+	if (elasticity <= 0 && !ht->p->insecure_elasticity)
 		return ERR_PTR(-EAGAIN);
 
 	return ERR_PTR(-ENOENT);
@@ -568,7 +568,8 @@ static struct bucket_table *rhashtable_insert_one(
 	if (unlikely(rht_grow_above_max(ht, tbl)))
 		return ERR_PTR(-E2BIG);
 
-	if (unlikely(rht_grow_above_100(ht, tbl)))
+	if (unlikely(rht_grow_above_100(ht, tbl)) &&
+	    !ht->p->insecure_elasticity)
 		return ERR_PTR(-EAGAIN);
 
 	head = rht_ptr(bkt, tbl, hash);
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

[v2 PATCH] rhashtable: Restore insecure_elasticity toggle

[Herbert Xu]

This one actually compiles.
---8<---
Some users of rhashtable cannot handle insertion failures, and
are happy to accept the consequences of a hash table that having
very long chains.

Restore the insecure_elasticity toggle for these users.  In
addition to disabling the chain length checks, this also removes
the emergency resize that would otherwise occur when the hash
table occupancy hits 100% (an async resize is still scheduled
at 75%).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/include/linux/rhashtable-types.h b/include/linux/rhashtable-types.h
index 015c8298bebc..72082428d6c6 100644
--- a/include/linux/rhashtable-types.h
+++ b/include/linux/rhashtable-types.h
@@ -49,6 +49,7 @@ typedef int (*rht_obj_cmpfn_t)(struct rhashtable_compare_arg *arg,
  * @head_offset: Offset of rhash_head in struct to be hashed
  * @max_size: Maximum size while expanding
  * @min_size: Minimum size while shrinking
+ * @insecure_elasticity: Set to true to disable chain length checks
  * @automatic_shrinking: Enable automatic shrinking of tables
  * @hashfn: Hash function (default: jhash2 if !(key_len % 4), or jhash)
  * @obj_hashfn: Function to hash object
@@ -61,6 +62,7 @@ struct rhashtable_params {
 	u16			head_offset;
 	unsigned int		max_size;
 	u16			min_size;
+	bool			insecure_elasticity;
 	bool			automatic_shrinking;
 	rht_hashfn_t		hashfn;
 	rht_obj_hashfn_t	obj_hashfn;
diff --git a/include/linux/rhashtable.h b/include/linux/rhashtable.h
index 0480509a6339..7def3f0f556b 100644
--- a/include/linux/rhashtable.h
+++ b/include/linux/rhashtable.h
@@ -821,14 +821,15 @@ static __always_inline void *__rhashtable_insert_fast(
 		goto out;
 	}
 
-	if (elasticity <= 0)
+	if (elasticity <= 0 && !params.insecure_elasticity)
 		goto slow_path;
 
 	data = ERR_PTR(-E2BIG);
 	if (unlikely(rht_grow_above_max(ht, tbl)))
 		goto out_unlock;
 
-	if (unlikely(rht_grow_above_100(ht, tbl)))
+	if (unlikely(rht_grow_above_100(ht, tbl)) &&
+	    !params.insecure_elasticity)
 		goto slow_path;
 
 	/* Inserting at head of list makes unlocking free. */
diff --git a/lib/rhashtable.c b/lib/rhashtable.c
index 6074ed5f66f3..fb2b7bc137ba 100644
--- a/lib/rhashtable.c
+++ b/lib/rhashtable.c
@@ -538,7 +538,7 @@ static void *rhashtable_lookup_one(struct rhashtable *ht,
 		return NULL;
 	}
 
-	if (elasticity <= 0)
+	if (elasticity <= 0 && !ht->p.insecure_elasticity)
 		return ERR_PTR(-EAGAIN);
 
 	return ERR_PTR(-ENOENT);
@@ -568,7 +568,8 @@ static struct bucket_table *rhashtable_insert_one(
 	if (unlikely(rht_grow_above_max(ht, tbl)))
 		return ERR_PTR(-E2BIG);
 
-	if (unlikely(rht_grow_above_100(ht, tbl)))
+	if (unlikely(rht_grow_above_100(ht, tbl)) &&
+	    !ht->p.insecure_elasticity)
 		return ERR_PTR(-EAGAIN);
 
 	head = rht_ptr(bkt, tbl, hash);
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

[PATCH v2 sched_ext/for-7.1-fixes] sched_ext: Mark scx_sched_hash insecure_elasticity

[Tejun Heo]

scx_sched_hash is inserted into under scx_sched_lock (raw_spinlock_irq)
in scx_link_sched(). rhashtable's sync grow path calls get_random_u32()
and does a GFP_ATOMIC allocation; both acquire regular spinlocks, which
is unsafe under raw_spinlock_t. Set insecure_elasticity to skip the
sync grow.

v2:
- Dropped dsq_hash changes. Insertion is not under raw_spin_lock.

- Switched from no_sync_grow flag to insecure_elasticity.

Fixes: 25037af712eb ("sched_ext: Add rhashtable lookup for sub-schedulers")
Signed-off-by: Tejun Heo <tj@kernel.org>
---
 kernel/sched/ext.c |    1 +
 1 file changed, 1 insertion(+)

--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -32,6 +32,7 @@ static const struct rhashtable_params sc
 	.key_len		= sizeof_field(struct scx_sched, ops.sub_cgroup_id),
 	.key_offset		= offsetof(struct scx_sched, ops.sub_cgroup_id),
 	.head_offset		= offsetof(struct scx_sched, hash_node),
+	.insecure_elasticity	= true,	/* inserted under scx_sched_lock */
 };
 
 static struct rhashtable scx_sched_hash;

Re: [PATCH v2 sched_ext/for-7.1-fixes] sched_ext: Mark scx_sched_hash insecure_elasticity

[Tejun Heo]

Applying the rhashtable patch and sched_ext fix to sched_ext/for-7.1-fixes.
Herbert, if this wasn't what you meant and want the rhashtable patch routed
differently, please let me know.

Thanks.

-- 
tejun

Re: [PATCH] rhashtable: Restore insecure_elasticity toggle

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 6029 bytes --]

Hi Herbert,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-nonmm-unstable]
[also build test ERROR on net/main net-next/main linus/master horms-ipvs/master v7.0 next-20260417]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Herbert-Xu/rhashtable-Restore-insecure_elasticity-toggle/20260418-233732
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
patch link:    https://lore.kernel.org/r/aeLgjAeJuidWNy3N%40gondor.apana.org.au
patch subject: [PATCH] rhashtable: Restore insecure_elasticity toggle
config: arm-allnoconfig
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 5bac06718f502014fade905512f1d26d578a18f3)
reproduce (this is a W=1 build):

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604200130.mFcotUk0-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from lib/rhashtable.c:25:
>> include/linux/rhashtable.h:831:32: error: member reference type 'struct rhashtable_params' is not a pointer; did you mean to use '.'?
     831 |         if (elasticity <= 0 && !params->insecure_elasticity)
         |                                 ~~~~~~^~
         |                                       .
   include/linux/rhashtable.h:839:13: error: member reference type 'struct rhashtable_params' is not a pointer; did you mean to use '.'?
     839 |             !params->insecure_elasticity)
         |              ~~~~~~^~
         |                    .
>> lib/rhashtable.c:541:31: error: member reference type 'struct rhashtable_params' is not a pointer; did you mean to use '.'?
     541 |         if (elasticity <= 0 && !ht->p->insecure_elasticity)
         |                                 ~~~~~^~
         |                                      .
   lib/rhashtable.c:572:12: error: member reference type 'struct rhashtable_params' is not a pointer; did you mean to use '.'?
     572 |             !ht->p->insecure_elasticity)
         |              ~~~~~^~
         |                   .
   4 errors generated.


vim +831 include/linux/rhashtable.h

   756	
   757	/* Internal function, please use rhashtable_insert_fast() instead. This
   758	 * function returns the existing element already in hashes if there is a clash,
   759	 * otherwise it returns an error via ERR_PTR().
   760	 */
   761	static __always_inline void *__rhashtable_insert_fast(
   762		struct rhashtable *ht, const void *key, struct rhash_head *obj,
   763		const struct rhashtable_params params, bool rhlist)
   764	{
   765		struct rhashtable_compare_arg arg = {
   766			.ht = ht,
   767			.key = key,
   768		};
   769		struct rhash_lock_head __rcu **bkt;
   770		struct rhash_head __rcu **pprev;
   771		struct bucket_table *tbl;
   772		struct rhash_head *head;
   773		unsigned long flags;
   774		unsigned int hash;
   775		int elasticity;
   776		void *data;
   777	
   778		rcu_read_lock();
   779	
   780		tbl = rht_dereference_rcu(ht->tbl, ht);
   781		hash = rht_head_hashfn(ht, tbl, obj, params);
   782		elasticity = RHT_ELASTICITY;
   783		bkt = rht_bucket_insert(ht, tbl, hash);
   784		data = ERR_PTR(-ENOMEM);
   785		if (!bkt)
   786			goto out;
   787		pprev = NULL;
   788		flags = rht_lock(tbl, bkt);
   789	
   790		if (unlikely(rcu_access_pointer(tbl->future_tbl))) {
   791	slow_path:
   792			rht_unlock(tbl, bkt, flags);
   793			rcu_read_unlock();
   794			return rhashtable_insert_slow(ht, key, obj);
   795		}
   796	
   797		rht_for_each_from(head, rht_ptr(bkt, tbl, hash), tbl, hash) {
   798			struct rhlist_head *plist;
   799			struct rhlist_head *list;
   800	
   801			elasticity--;
   802			if (!key ||
   803			    (params.obj_cmpfn ?
   804			     params.obj_cmpfn(&arg, rht_obj(ht, head)) :
   805			     rhashtable_compare(&arg, rht_obj(ht, head)))) {
   806				pprev = &head->next;
   807				continue;
   808			}
   809	
   810			data = rht_obj(ht, head);
   811	
   812			if (!rhlist)
   813				goto out_unlock;
   814	
   815	
   816			list = container_of(obj, struct rhlist_head, rhead);
   817			plist = container_of(head, struct rhlist_head, rhead);
   818	
   819			RCU_INIT_POINTER(list->next, plist);
   820			head = rht_dereference_bucket(head->next, tbl, hash);
   821			RCU_INIT_POINTER(list->rhead.next, head);
   822			if (pprev) {
   823				rcu_assign_pointer(*pprev, obj);
   824				rht_unlock(tbl, bkt, flags);
   825			} else
   826				rht_assign_unlock(tbl, bkt, obj, flags);
   827			data = NULL;
   828			goto out;
   829		}
   830	
 > 831		if (elasticity <= 0 && !params->insecure_elasticity)
   832			goto slow_path;
   833	
   834		data = ERR_PTR(-E2BIG);
   835		if (unlikely(rht_grow_above_max(ht, tbl)))
   836			goto out_unlock;
   837	
   838		if (unlikely(rht_grow_above_100(ht, tbl)) &&
   839		    !params->insecure_elasticity)
   840			goto slow_path;
   841	
   842		/* Inserting at head of list makes unlocking free. */
   843		head = rht_ptr(bkt, tbl, hash);
   844	
   845		RCU_INIT_POINTER(obj->next, head);
   846		if (rhlist) {
   847			struct rhlist_head *list;
   848	
   849			list = container_of(obj, struct rhlist_head, rhead);
   850			RCU_INIT_POINTER(list->next, NULL);
   851		}
   852	
   853		atomic_inc(&ht->nelems);
   854		rht_assign_unlock(tbl, bkt, obj, flags);
   855	
   856		if (rht_grow_above_75(ht, tbl))
   857			schedule_work(&ht->run_work);
   858	
   859		data = NULL;
   860	out:
   861		rcu_read_unlock();
   862	
   863		return data;
   864	
   865	out_unlock:
   866		rht_unlock(tbl, bkt, flags);
   867		goto out;
   868	}
   869	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

[-- Attachment #2: reproduce --]
[-- Type: text/plain, Size: 924 bytes --]

reproduce (this is a W=1 build):
        git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git
        git fetch akpm-mm mm-nonmm-unstable
        git checkout akpm-mm/mm-nonmm-unstable
        b4 shazam https://lore.kernel.org/r/aeLgjAeJuidWNy3N@gondor.apana.org.au

        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # clang-23 might not be officially released. Try a lower version if installation fails.
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-23 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-23 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash lib/ 

[-- Attachment #3: config --]
[-- Type: text/plain, Size: 28234 bytes --]

#
# Automatically generated file; DO NOT EDIT.
# Linux/arm 7.0.0-rc5 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="clang version 23.0.0git (git://gitmirror/llvm_project 5bac06718f502014fade905512f1d26d578a18f3)"
CONFIG_GCC_VERSION=0
CONFIG_CC_IS_CLANG=y
CONFIG_CLANG_VERSION=230000
CONFIG_AS_IS_LLVM=y
CONFIG_AS_VERSION=230000
CONFIG_LD_VERSION=0
CONFIG_LD_IS_LLD=y
CONFIG_LLD_VERSION=230000
CONFIG_RUSTC_VERSION=108800
CONFIG_RUST_IS_AVAILABLE=y
CONFIG_RUSTC_LLVM_VERSION=200105
CONFIG_ARCH_HAS_CC_CAN_LINK=y
CONFIG_CC_CAN_LINK=y
CONFIG_CC_HAS_ASM_GOTO_OUTPUT=y
CONFIG_CC_HAS_ASM_GOTO_TIED_OUTPUT=y
CONFIG_TOOLS_SUPPORT_RELR=y
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_ASSUME=y
CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
CONFIG_CC_HAS_COUNTED_BY=y
CONFIG_CC_HAS_COUNTED_BY_PTR=y
CONFIG_CC_HAS_MULTIDIMENSIONAL_NONSTRING=y
CONFIG_LD_CAN_USE_KEEP_IN_OVERLAY=y
CONFIG_RUSTC_HAS_SLICE_AS_FLATTENED=y
CONFIG_RUSTC_HAS_COERCE_POINTEE=y
CONFIG_RUSTC_HAS_SPAN_FILE=y
CONFIG_RUSTC_HAS_UNNECESSARY_TRANSMUTES=y
CONFIG_PAHOLE_VERSION=131
CONFIG_IRQ_WORK=y
CONFIG_THREAD_INFO_IN_TASK=y

#
# General setup
#
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
# CONFIG_COMPILE_TEST is not set
# CONFIG_WERROR is not set
CONFIG_LOCALVERSION=""
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_BUILD_SALT=""
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_LZ4=y
CONFIG_KERNEL_GZIP=y
# CONFIG_KERNEL_LZMA is not set
# CONFIG_KERNEL_XZ is not set
# CONFIG_KERNEL_LZO is not set
# CONFIG_KERNEL_LZ4 is not set
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_HOSTNAME="(none)"
# CONFIG_SYSVIPC is not set
# CONFIG_WATCH_QUEUE is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_GENERIC_IRQ_CHIP=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_HIERARCHY=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
# end of IRQ subsystem

CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
CONFIG_GENERIC_CLOCKEVENTS=y

#
# Timers subsystem
#
CONFIG_HZ_PERIODIC=y
# CONFIG_NO_HZ_IDLE is not set
# CONFIG_NO_HZ is not set
# CONFIG_HIGH_RES_TIMERS is not set
# CONFIG_POSIX_AUX_CLOCKS is not set
# end of Timers subsystem

CONFIG_HAVE_EBPF_JIT=y

#
# BPF subsystem
#
# CONFIG_BPF_SYSCALL is not set
# end of BPF subsystem

CONFIG_PREEMPT_VOLUNTARY_BUILD=y
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set

#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
# CONFIG_IRQ_TIME_ACCOUNTING is not set
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_PSI is not set
# end of CPU/Task time and stats accounting

#
# RCU Subsystem
#
CONFIG_TINY_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_TINY_SRCU=y
# end of RCU Subsystem

# CONFIG_IKCONFIG is not set
# CONFIG_IKHEADERS is not set
CONFIG_LOG_BUF_SHIFT=17
CONFIG_GENERIC_SCHED_CLOCK=y

#
# Scheduler features
#
# end of Scheduler features

CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough"
CONFIG_GCC10_NO_ARRAY_BOUNDS=y
CONFIG_GCC_NO_STRINGOP_OVERFLOW=y
# CONFIG_CGROUPS is not set
CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_USER_NS is not set
# CONFIG_PID_NS is not set
# CONFIG_CHECKPOINT_RESTORE is not set
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_RELAY is not set
# CONFIG_BLK_DEV_INITRD is not set
# CONFIG_BOOT_CONFIG is not set
CONFIG_CMDLINE_LOG_WRAP_IDEAL_LEN=1021
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_HAVE_LD_DEAD_CODE_DATA_ELIMINATION=y
CONFIG_LD_ORPHAN_WARN=y
CONFIG_LD_ORPHAN_WARN_LEVEL="warn"
CONFIG_SYSCTL=y
CONFIG_HAVE_UID16=y
# CONFIG_SYSFS_SYSCALL is not set
# CONFIG_EXPERT is not set
CONFIG_UID16=y
CONFIG_MULTIUSER=y
CONFIG_FHANDLE=y
CONFIG_POSIX_TIMERS=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_FUTEX=y
CONFIG_FUTEX_PI=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_AIO=y
CONFIG_IO_URING=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_MEMBARRIER=y
CONFIG_RSEQ=y
CONFIG_CACHESTAT_SYSCALL=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_SELFTEST is not set
CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y

#
# Kernel Performance Events And Counters
#
# CONFIG_PERF_EVENTS is not set
# end of Kernel Performance Events And Counters

# CONFIG_PROFILING is not set

#
# Kexec and crash features
#
# end of Kexec and crash features

#
# Live Update and Kexec HandOver
#
# end of Live Update and Kexec HandOver
# end of General setup

CONFIG_ARM=y
CONFIG_ARM_HAS_GROUP_RELOCS=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_NO_IOPORT_MAP=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_PHYS_OFFSET=0x00800000
CONFIG_GENERIC_BUG=y
CONFIG_PGTABLE_LEVELS=2

#
# System Type
#
# CONFIG_MMU is not set
CONFIG_ARM_SINGLE_ARMV7M=y
CONFIG_ARCH_MMAP_RND_BITS_MIN=8
CONFIG_ARCH_MMAP_RND_BITS_MAX=16
# CONFIG_ARCH_AT91 is not set
# CONFIG_ARCH_MXC is not set
# CONFIG_ARCH_STM32 is not set
# CONFIG_ARCH_LPC18XX is not set
# CONFIG_ARCH_MPS2 is not set

#
# Processor Type
#
CONFIG_CPU_V7M=y
CONFIG_CPU_THUMBONLY=y
CONFIG_CPU_THUMB_CAPABLE=y
CONFIG_CPU_32v7M=y
CONFIG_CPU_ABRT_NOMMU=y
CONFIG_CPU_PABRT_LEGACY=y
CONFIG_CPU_CACHE_NOP=y
CONFIG_CPU_CACHE_V7M=y
CONFIG_CPU_V7M_NUM_IRQ=240

#
# Processor Features
#
CONFIG_ARM_THUMB=y
CONFIG_CPU_LITTLE_ENDIAN=y
# CONFIG_CPU_ICACHE_DISABLE is not set
# CONFIG_CPU_DCACHE_DISABLE is not set
# CONFIG_CPU_BPREDICT_DISABLE is not set
CONFIG_ARM_L1_CACHE_SHIFT=5
# CONFIG_ARM_DMA_MEM_BUFFERABLE is not set
# CONFIG_SET_MEM_PARAM is not set
CONFIG_DRAM_BASE=0x00800000
CONFIG_DRAM_SIZE=0x00800000
# CONFIG_REMAP_VECTORS_TO_RAM is not set
# CONFIG_ARM_MPU is not set
# end of System Type

#
# Bus support
#
# end of Bus support

#
# Kernel Features
#
CONFIG_IRQSTACKS=y
CONFIG_PAGE_OFFSET=0x00800000
CONFIG_HZ_FIXED=0
CONFIG_HZ_100=y
# CONFIG_HZ_200 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_500 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
CONFIG_THUMB2_KERNEL=y
CONFIG_AEABI=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_FORCE_MAX_ORDER=10
# CONFIG_PARAVIRT is not set
# CONFIG_PARAVIRT_TIME_ACCOUNTING is not set
# end of Kernel Features

#
# Boot options
#
CONFIG_USE_OF=y
CONFIG_ARCH_WANT_FLAT_DTB_INSTALL=y
# CONFIG_ATAGS is not set
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
# CONFIG_ARM_APPENDED_DTB is not set
CONFIG_CMDLINE=""
# CONFIG_XIP_KERNEL is not set
CONFIG_ARCH_SUPPORTS_CRASH_DUMP=y
CONFIG_ARCH_DEFAULT_CRASH_DUMP=y
# CONFIG_AUTO_ZRELADDR is not set
# end of Boot options

#
# CPU Power Management
#

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
# end of CPU Frequency scaling

#
# CPU Idle
#
# CONFIG_CPU_IDLE is not set
# end of CPU Idle
# end of CPU Power Management

#
# Floating point emulation
#

#
# At least one emulation must be selected
#
# end of Floating point emulation

CONFIG_ARCH_CC_CAN_LINK=y
CONFIG_ARCH_USERFLAGS="-mlittle-endian"

#
# Power management options
#
# CONFIG_SUSPEND is not set
# CONFIG_PM is not set
# CONFIG_APM_EMULATION is not set
CONFIG_ARCH_SUSPEND_POSSIBLE=y
# end of Power management options

CONFIG_CPU_MITIGATIONS=y
CONFIG_ARCH_HAS_DMA_OPS=y

#
# General architecture-dependent options
#
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_HAVE_FUNCTION_ERROR_INJECTION=y
CONFIG_HAVE_NMI=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_GENERIC_IDLE_POLL_SETUP=y
CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
CONFIG_ARCH_HAS_KEEPINITRD=y
CONFIG_ARCH_HAS_SET_MEMORY=y
CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
CONFIG_ARCH_32BIT_OFF_T=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_RSEQ=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_MMU_LAZY_TLB_REFCOUNT=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_HAVE_ARCH_SECCOMP=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
# CONFIG_SECCOMP is not set
CONFIG_HAVE_ARCH_KSTACK_ERASE=y
CONFIG_HAVE_STACKPROTECTOR=y
# CONFIG_STACKPROTECTOR is not set
CONFIG_LTO_NONE=y
CONFIG_ARCH_SUPPORTS_CFI=y
# CONFIG_CFI is not set
CONFIG_HAVE_CFI_ICALL_NORMALIZE_INTEGERS=y
CONFIG_HAVE_CONTEXT_TRACKING_USER=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y
CONFIG_SOFTIRQ_ON_OWN_STACK=y
CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
CONFIG_HAVE_EXIT_THREAD=y
CONFIG_HAVE_PAGE_SIZE_4KB=y
CONFIG_PAGE_SIZE_4KB=y
CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
CONFIG_PAGE_SHIFT=12
CONFIG_CLONE_BACKWARDS=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_OLD_SIGACTION=y
# CONFIG_COMPAT_32BIT_TIME is not set
CONFIG_ARCH_WANT_LD_ORPHAN_WARN=y
CONFIG_HAVE_ARCH_PFN_VALID=y

#
# GCOV-based kernel profiling
#
CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
# end of GCOV-based kernel profiling

CONFIG_HAVE_GCC_PLUGINS=y
CONFIG_FUNCTION_ALIGNMENT=0
CONFIG_CC_HAS_SANE_FUNCTION_ALIGNMENT=y
# end of General architecture-dependent options

CONFIG_RT_MUTEXES=y
# CONFIG_MODULES is not set
CONFIG_BLOCK=y
# CONFIG_BLOCK_LEGACY_AUTOLOAD is not set
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
# CONFIG_BLK_DEV_WRITE_MOUNTED is not set
# CONFIG_BLK_DEV_ZONED is not set
# CONFIG_BLK_WBT is not set
# CONFIG_BLK_INLINE_ENCRYPTION is not set

#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_EFI_PARTITION=y
# end of Partition Types

#
# IO Schedulers
#
# CONFIG_MQ_IOSCHED_DEADLINE is not set
# CONFIG_MQ_IOSCHED_KYBER is not set
# CONFIG_IOSCHED_BFQ is not set
# end of IO Schedulers

CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y

#
# Executable file formats
#
# CONFIG_BINFMT_ELF_FDPIC is not set
# CONFIG_BINFMT_SCRIPT is not set
CONFIG_ARCH_HAS_BINFMT_FLAT=y
# CONFIG_BINFMT_FLAT is not set
CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK=y
# CONFIG_BINFMT_MISC is not set
CONFIG_COREDUMP=y
# end of Executable file formats

#
# Memory Management options
#

#
# Slab allocator options
#
CONFIG_SLUB=y
# CONFIG_SLAB_MERGE_DEFAULT is not set
# CONFIG_SLAB_FREELIST_RANDOM is not set
# CONFIG_SLAB_FREELIST_HARDENED is not set
# CONFIG_SLAB_BUCKETS is not set
# CONFIG_SLUB_STATS is not set
# CONFIG_RANDOM_KMALLOC_CACHES is not set
# end of Slab allocator options

# CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
# CONFIG_SPARSEMEM_MANUAL is not set
CONFIG_FLATMEM=y
CONFIG_ARCH_KEEP_MEMBLOCK=y
CONFIG_EXCLUSIVE_SYSTEM_RAM=y
# CONFIG_PAGE_REPORTING is not set
CONFIG_PCP_BATCH_SCALE_MAX=5
CONFIG_NOMMU_INITIAL_TRIM_EXCESS=1
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_PAGE_MAPCOUNT=y
CONFIG_NEED_PER_CPU_KM=y
CONFIG_PAGE_BLOCK_MAX_ORDER=10
CONFIG_GENERIC_EARLY_IOREMAP=y
CONFIG_ARCH_HAS_CPU_CACHE_ALIASING=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_ARCH_HAS_CURRENT_STACK_POINTER=y
CONFIG_VM_EVENT_COUNTERS=y
# CONFIG_PERCPU_STATS is not set

#
# GUP_TEST needs to have DEBUG_FS enabled
#
# CONFIG_DMAPOOL_TEST is not set
CONFIG_ARCH_SUPPORTS_PER_VMA_LOCK=y
CONFIG_LOCK_MM_AND_FIND_VMA=y

#
# Data Access Monitoring
#
# CONFIG_DAMON is not set
# end of Data Access Monitoring
# end of Memory Management options

# CONFIG_NET is not set

#
# Device Drivers
#
CONFIG_GENERIC_PCI_IOMAP=y
# CONFIG_PCCARD is not set

#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set
# CONFIG_DEVTMPFS is not set
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set

#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER is not set
# CONFIG_FW_LOADER_COMPRESS is not set
# CONFIG_FW_UPLOAD is not set
# end of Firmware loader

CONFIG_ALLOW_DEV_COREDUMP=y
CONFIG_GENERIC_CPU_DEVICES=y
CONFIG_GENERIC_CPU_AUTOPROBE=y
# CONFIG_FW_DEVLINK_SYNC_STATE_TIMEOUT is not set
# end of Generic Driver Options

#
# Bus devices
#
# CONFIG_VEXPRESS_CONFIG is not set
# CONFIG_MHI_BUS is not set
# CONFIG_MHI_BUS_EP is not set
# end of Bus devices

#
# Firmware Drivers
#

#
# ARM System Control and Management Interface Protocol
#
# CONFIG_ARM_SCMI_PROTOCOL is not set
# end of ARM System Control and Management Interface Protocol

# CONFIG_GOOGLE_FIRMWARE is not set

#
# Qualcomm firmware drivers
#
# end of Qualcomm firmware drivers

#
# Tegra firmware driver
#
# end of Tegra firmware driver
# end of Firmware Drivers

# CONFIG_FWCTL is not set
# CONFIG_GNSS is not set
# CONFIG_MTD is not set
CONFIG_DTC=y
CONFIG_OF=y
# CONFIG_OF_UNITTEST is not set
CONFIG_OF_FLATTREE=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_KOBJ=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_IRQ=y
CONFIG_OF_RESERVED_MEM=y
# CONFIG_OF_OVERLAY is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
# CONFIG_PARPORT is not set
# CONFIG_BLK_DEV is not set

#
# NVME Support
#
# CONFIG_NVME_FC is not set
# CONFIG_NVME_TARGET is not set
# end of NVME Support

#
# Misc devices
#
# CONFIG_DUMMY_IRQ is not set
# CONFIG_RPMB is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_SRAM is not set
# CONFIG_XILINX_SDFEC is not set
# CONFIG_OPEN_DICE is not set
# CONFIG_NTSYNC is not set
# CONFIG_VCPU_STALL_DETECTOR is not set
# CONFIG_C2PORT is not set

#
# EEPROM support
#
# CONFIG_EEPROM_93CX6 is not set
# end of EEPROM support

#
# Altera FPGA firmware download module (requires I2C)
#
# CONFIG_PVPANIC is not set
# end of Misc devices

#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
# CONFIG_SCSI is not set
# end of SCSI device support

# CONFIG_ATA is not set
# CONFIG_MD is not set
# CONFIG_TARGET_CORE is not set

#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set

#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set

#
# Input Device Drivers
#
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set
# CONFIG_RMI4_CORE is not set

#
# Hardware I/O ports
#
# CONFIG_SERIO is not set
# CONFIG_GAMEPORT is not set
# end of Hardware I/O ports
# end of Input device support

#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_LEGACY_TIOCSTI is not set
# CONFIG_LDISC_AUTOLOAD is not set

#
# Serial drivers
#
# CONFIG_SERIAL_8250 is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_EARLYCON_SEMIHOST is not set
# CONFIG_SERIAL_UARTLITE is not set
# CONFIG_SERIAL_SIFIVE is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_XILINX_PS_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_FSL_LINFLEXUART is not set
# CONFIG_SERIAL_CONEXANT_DIGICOLOR is not set
# CONFIG_SERIAL_ST_ASC is not set
# CONFIG_SERIAL_SPRD is not set
# end of Serial drivers

# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_NULL_TTY is not set
# CONFIG_HVC_DCC is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_VIRTIO_CONSOLE is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_DEVMEM is not set
# CONFIG_DEVPORT is not set
# CONFIG_TCG_TPM is not set
# CONFIG_XILLYBUS is not set
# end of Character devices

#
# I2C support
#
# CONFIG_I2C is not set
# end of I2C support

# CONFIG_I3C is not set
# CONFIG_SPI is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
# CONFIG_PPS is not set

#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK_OPTIONAL=y

#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# end of PTP clock support

#
# DPLL device support
#
# end of DPLL device support

# CONFIG_PINCTRL is not set
CONFIG_GPIOLIB_LEGACY=y
# CONFIG_GPIOLIB is not set
# CONFIG_W1 is not set
# CONFIG_POWER_RESET is not set
# CONFIG_POWER_SEQUENCING is not set
# CONFIG_POWER_SUPPLY is not set
# CONFIG_HWMON is not set
# CONFIG_THERMAL is not set
# CONFIG_WATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
# CONFIG_BCMA is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_ATMEL_FLEXCOM is not set
# CONFIG_MFD_ATMEL_HLCDC is not set
# CONFIG_MFD_MADERA is not set
# CONFIG_MFD_HI6421_PMIC is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_PM8XXX is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TQMX86 is not set
# end of Multifunction device drivers

# CONFIG_REGULATOR is not set
# CONFIG_RC_CORE is not set

#
# CEC support
#
# CONFIG_MEDIA_CEC_SUPPORT is not set
# end of CEC support

# CONFIG_MEDIA_SUPPORT is not set

#
# Graphics support
#
# CONFIG_AUXDISPLAY is not set
# CONFIG_DRM is not set

#
# Frame buffer Devices
#
# CONFIG_FB is not set
# end of Frame buffer Devices

#
# Backlight & LCD device support
#
# CONFIG_LCD_CLASS_DEVICE is not set
# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
# end of Backlight & LCD device support

#
# Console display driver support
#
CONFIG_DUMMY_CONSOLE=y
CONFIG_DUMMY_CONSOLE_COLUMNS=80
CONFIG_DUMMY_CONSOLE_ROWS=30
# end of Console display driver support

# CONFIG_TRACE_GPU_MEM is not set
# end of Graphics support

# CONFIG_SOUND is not set
# CONFIG_HID_SUPPORT is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
# CONFIG_USB_SUPPORT is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
CONFIG_EDAC_ATOMIC_SCRUB=y
CONFIG_EDAC_SUPPORT=y
CONFIG_RTC_LIB=y
# CONFIG_RTC_CLASS is not set
# CONFIG_DMADEVICES is not set

#
# DMABUF options
#
# CONFIG_SYNC_FILE is not set
# CONFIG_DMABUF_HEAPS is not set
# end of DMABUF options

# CONFIG_VFIO is not set
# CONFIG_VIRT_DRIVERS is not set
# CONFIG_VIRTIO_MENU is not set
# CONFIG_VHOST_MENU is not set

#
# Microsoft Hyper-V guest support
#
# end of Microsoft Hyper-V guest support

# CONFIG_GREYBUS is not set
# CONFIG_COMEDI is not set
# CONFIG_GPIB is not set
# CONFIG_STAGING is not set
# CONFIG_GOLDFISH is not set
# CONFIG_CHROME_PLATFORMS is not set
# CONFIG_MELLANOX_PLATFORM is not set
CONFIG_HAVE_CLK=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_COMMON_CLK=y

#
# Clock driver for ARM Reference designs
#
# CONFIG_CLK_ICST is not set
# CONFIG_CLK_SP810 is not set
# end of Clock driver for ARM Reference designs

# CONFIG_COMMON_CLK_AXI_CLKGEN is not set
# CONFIG_COMMON_CLK_FIXED_MMIO is not set
# CONFIG_XILINX_VCU is not set
# CONFIG_COMMON_CLK_XLNX_CLKWZRD is not set
# CONFIG_HWSPINLOCK is not set

#
# Clock Source drivers
#
CONFIG_TIMER_OF=y
CONFIG_TIMER_PROBE=y
# CONFIG_ARM_TIMER_SP804 is not set
# CONFIG_MICROCHIP_PIT64B is not set
# end of Clock Source drivers

# CONFIG_MAILBOX is not set

#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set
# end of Remoteproc drivers

#
# Rpmsg drivers
#
# CONFIG_RPMSG_VIRTIO is not set
# end of Rpmsg drivers

#
# SOC (System On Chip) specific Drivers
#

#
# Amlogic SoC drivers
#
# end of Amlogic SoC drivers

#
# Broadcom SoC drivers
#
# end of Broadcom SoC drivers

#
# NXP/Freescale QorIQ SoC drivers
#
# CONFIG_QUICC_ENGINE is not set
# end of NXP/Freescale QorIQ SoC drivers

#
# fujitsu SoC drivers
#
# end of fujitsu SoC drivers

#
# i.MX SoC drivers
#
# end of i.MX SoC drivers

#
# Enable LiteX SoC Builder specific drivers
#
# CONFIG_LITEX_SOC_CONTROLLER is not set
# end of Enable LiteX SoC Builder specific drivers

# CONFIG_WPCM450_SOC is not set

#
# Qualcomm SoC drivers
#
# end of Qualcomm SoC drivers

# CONFIG_SOC_TI is not set

#
# Xilinx SoC drivers
#
# end of Xilinx SoC drivers
# end of SOC (System On Chip) specific Drivers

#
# PM Domains
#

#
# Amlogic PM Domains
#
# end of Amlogic PM Domains

#
# Broadcom PM Domains
#
# end of Broadcom PM Domains

#
# i.MX PM Domains
#
# end of i.MX PM Domains

#
# Qualcomm PM Domains
#
# end of Qualcomm PM Domains
# end of PM Domains

# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_PWM is not set

#
# IRQ chip support
#
CONFIG_IRQCHIP=y
CONFIG_ARM_NVIC=y
# CONFIG_AL_FIC is not set
# CONFIG_XILINX_INTC is not set
# end of IRQ chip support

# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set

#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_PHY_CAN_TRANSCEIVER is not set

#
# PHY drivers for Broadcom platforms
#
# CONFIG_BCM_KONA_USB2_PHY is not set
# end of PHY drivers for Broadcom platforms

# CONFIG_PHY_CADENCE_TORRENT is not set
# CONFIG_PHY_CADENCE_DPHY is not set
# CONFIG_PHY_CADENCE_DPHY_RX is not set
# CONFIG_PHY_CADENCE_SALVO is not set
# CONFIG_PHY_PXA_28NM_HSIC is not set
# CONFIG_PHY_PXA_28NM_USB2 is not set
# end of PHY Subsystem

# CONFIG_POWERCAP is not set
# CONFIG_MCB is not set
# CONFIG_RAS is not set

#
# Android
#
# end of Android

# CONFIG_DAX is not set
# CONFIG_NVMEM is not set

#
# HW tracing support
#
# CONFIG_STM is not set
# CONFIG_INTEL_TH is not set
# end of HW tracing support

# CONFIG_FPGA is not set
# CONFIG_FSI is not set
# CONFIG_SIOX is not set
# CONFIG_SLIMBUS is not set
# CONFIG_INTERCONNECT is not set
# CONFIG_COUNTER is not set
# CONFIG_PECI is not set
# CONFIG_HTE is not set
# end of Device Drivers

#
# File systems
#
# CONFIG_VALIDATE_FS_PARSER is not set
CONFIG_FS_IOMAP=y
# CONFIG_EXT2_FS is not set
# CONFIG_EXT4_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
# CONFIG_F2FS_FS is not set
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
# CONFIG_FS_ENCRYPTION is not set
# CONFIG_FS_VERITY is not set
# CONFIG_DNOTIFY is not set
# CONFIG_INOTIFY_USER is not set
# CONFIG_FANOTIFY is not set
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_FUSE_FS is not set
# CONFIG_OVERLAY_FS is not set

#
# Caches
#
# end of Caches

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set
# end of CD-ROM/DVD Filesystems

#
# DOS/FAT/EXFAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_EXFAT_FS is not set
# CONFIG_NTFS3_FS is not set
# CONFIG_NTFS_FS is not set
# end of DOS/FAT/EXFAT/NT Filesystems

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_SYSCTL=y
# CONFIG_PROC_CHILDREN is not set
CONFIG_KERNFS=y
CONFIG_SYSFS=y
# CONFIG_CONFIGFS_FS is not set
# end of Pseudo filesystems

# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_NLS is not set
# CONFIG_UNICODE is not set
CONFIG_IO_WQ=y
# end of File systems

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
CONFIG_PROC_MEM_ALWAYS_FORCE=y
# CONFIG_PROC_MEM_FORCE_PTRACE is not set
# CONFIG_PROC_MEM_NO_FORCE is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_DEFAULT_SECURITY_DAC=y

#
# Kernel hardening options
#

#
# Memory initialization
#
CONFIG_CC_HAS_AUTO_VAR_INIT_PATTERN=y
CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_BARE=y
CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO=y
# CONFIG_INIT_STACK_NONE is not set
# CONFIG_INIT_STACK_ALL_PATTERN is not set
CONFIG_INIT_STACK_ALL_ZERO=y
CONFIG_CC_HAS_SANCOV_STACK_DEPTH_CALLBACK=y
# CONFIG_KSTACK_ERASE is not set
# CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set
# CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
# end of Memory initialization

#
# Bounds checking
#
# CONFIG_FORTIFY_SOURCE is not set
# CONFIG_HARDENED_USERCOPY is not set
# end of Bounds checking

#
# Hardening of kernel data structures
#
# CONFIG_LIST_HARDENED is not set
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# end of Hardening of kernel data structures

CONFIG_CC_HAS_RANDSTRUCT=y
CONFIG_RANDSTRUCT_NONE=y
# CONFIG_RANDSTRUCT_FULL is not set
# end of Kernel hardening options
# end of Security options

# CONFIG_CRYPTO is not set

#
# Library routines
#
# CONFIG_PACKING is not set
CONFIG_BITREVERSE=y
CONFIG_HAVE_ARCH_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
# CONFIG_CORDIC is not set
# CONFIG_PRIME_NUMBERS is not set
CONFIG_RATIONAL=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_CRC32=y
CONFIG_CRC_OPTIMIZATIONS=y

#
# Crypto library routines
#
CONFIG_CRYPTO_LIB_BLAKE2S_ARCH=y
CONFIG_CRYPTO_LIB_POLY1305_RSIZE=9
# end of Crypto library routines

# CONFIG_RANDOM32_SELFTEST is not set
# CONFIG_XZ_DEC is not set
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y
CONFIG_DMA_OPS_HELPERS=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_ARCH_HAS_DMA_WRITE_COMBINE=y
CONFIG_DMA_DECLARE_COHERENT=y
CONFIG_ARCH_HAS_SETUP_DMA_OPS=y
CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE=y
CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU=y
CONFIG_DMA_NEED_SYNC=y
CONFIG_DMA_NONCOHERENT_MMAP=y
CONFIG_DMA_GLOBAL_POOL=y
# CONFIG_DMA_API_DEBUG is not set
CONFIG_FORCE_NR_CPUS=y
CONFIG_GENERIC_ATOMIC64=y
# CONFIG_IRQ_POLL is not set
CONFIG_LIBFDT=y
CONFIG_ARCH_STACKWALK=y
CONFIG_STACKDEPOT=y
CONFIG_STACKDEPOT_MAX_FRAMES=64
CONFIG_SBITMAP=y
# CONFIG_LWQ_TEST is not set
# end of Library routines

CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y

#
# Kernel hacking
#

#
# printk and dmesg options
#
# CONFIG_PRINTK_TIME is not set
# CONFIG_PRINTK_CALLER is not set
# CONFIG_STACKTRACE_BUILD_ID is not set
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_CONSOLE_LOGLEVEL_QUIET=4
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DYNAMIC_DEBUG_CORE is not set
# CONFIG_SYMBOLIC_ERRNAME is not set
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_DEBUG_BUGVERBOSE_DETAILED is not set
# end of printk and dmesg options

# CONFIG_DEBUG_KERNEL is not set

#
# Compile-time checks and compiler options
#
CONFIG_AS_HAS_NON_CONST_ULEB128=y
CONFIG_FRAME_WARN=1280
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_HEADERS_INSTALL is not set
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# CONFIG_WARN_CONTEXT_ANALYSIS is not set
# end of Compile-time checks and compiler options

#
# Generic Kernel Debugging Instruments
#
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_DEBUG_FS is not set
CONFIG_ARCH_HAS_UBSAN=y
# CONFIG_UBSAN is not set
# end of Generic Kernel Debugging Instruments

#
# Networking Debugging
#
# end of Networking Debugging

#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
CONFIG_SLUB_DEBUG=y
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_PAGE_POISONING is not set
CONFIG_HAVE_DEBUG_KMEMLEAK=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_CC_HAS_KASAN_GENERIC=y
CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y
# end of Memory Debugging

#
# Debug Oops, Lockups and Hangs
#
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_TIMEOUT=0
# end of Debug Oops, Lockups and Hangs

#
# Scheduler Debugging
#
# CONFIG_SCHEDSTATS is not set
# end of Scheduler Debugging

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
# CONFIG_WW_MUTEX_SELFTEST is not set
# end of Lock Debugging (spinlocks, mutexes, etc...)

# CONFIG_DEBUG_IRQFLAGS is not set
CONFIG_STACKTRACE=y

#
# Debug kernel data structures
#
# end of Debug kernel data structures

#
# RCU Debugging
#
# end of RCU Debugging

CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_FREGS=y
CONFIG_HAVE_EXTRA_IPI_TRACEPOINTS=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_HAVE_BUILDTIME_MCOUNT_SORT=y
# CONFIG_SAMPLES is not set

#
# arm Debugging
#
CONFIG_UNWINDER_ARM=y
CONFIG_ARM_UNWIND=y
# CONFIG_DEBUG_USER is not set
CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
# CONFIG_CORESIGHT is not set
# end of arm Debugging

#
# Kernel Testing and Coverage
#
# CONFIG_KUNIT is not set
CONFIG_ARCH_HAS_KCOV=y
# CONFIG_KCOV is not set
# CONFIG_RUNTIME_TESTING_MENU is not set
CONFIG_ARCH_USE_MEMTEST=y
# CONFIG_MEMTEST is not set
# end of Kernel Testing and Coverage

#
# Rust hacking
#
# end of Rust hacking
# end of Kernel hacking

Re: [PATCH] rhashtable: Restore insecure_elasticity toggle

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 5844 bytes --]

Hi Herbert,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-nonmm-unstable]
[also build test ERROR on net/main net-next/main linus/master horms-ipvs/master v7.0 next-20260417]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Herbert-Xu/rhashtable-Restore-insecure_elasticity-toggle/20260418-233732
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
patch link:    https://lore.kernel.org/r/aeLgjAeJuidWNy3N%40gondor.apana.org.au
patch subject: [PATCH] rhashtable: Restore insecure_elasticity toggle
config: alpha-allnoconfig
compiler: alpha-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build):

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604200210.OEDP0u1Y-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from lib/rhashtable.c:25:
   include/linux/rhashtable.h: In function '__rhashtable_insert_fast':
>> include/linux/rhashtable.h:831:39: error: invalid type argument of '->' (have 'struct rhashtable_params')
     831 |         if (elasticity <= 0 && !params->insecure_elasticity)
         |                                       ^~
   include/linux/rhashtable.h:839:20: error: invalid type argument of '->' (have 'struct rhashtable_params')
     839 |             !params->insecure_elasticity)
         |                    ^~
   lib/rhashtable.c: In function 'rhashtable_lookup_one':
>> lib/rhashtable.c:541:38: error: invalid type argument of '->' (have 'struct rhashtable_params')
     541 |         if (elasticity <= 0 && !ht->p->insecure_elasticity)
         |                                      ^~
   lib/rhashtable.c: In function 'rhashtable_insert_one':
   lib/rhashtable.c:572:19: error: invalid type argument of '->' (have 'struct rhashtable_params')
     572 |             !ht->p->insecure_elasticity)
         |                   ^~


vim +831 include/linux/rhashtable.h

   756	
   757	/* Internal function, please use rhashtable_insert_fast() instead. This
   758	 * function returns the existing element already in hashes if there is a clash,
   759	 * otherwise it returns an error via ERR_PTR().
   760	 */
   761	static __always_inline void *__rhashtable_insert_fast(
   762		struct rhashtable *ht, const void *key, struct rhash_head *obj,
   763		const struct rhashtable_params params, bool rhlist)
   764	{
   765		struct rhashtable_compare_arg arg = {
   766			.ht = ht,
   767			.key = key,
   768		};
   769		struct rhash_lock_head __rcu **bkt;
   770		struct rhash_head __rcu **pprev;
   771		struct bucket_table *tbl;
   772		struct rhash_head *head;
   773		unsigned long flags;
   774		unsigned int hash;
   775		int elasticity;
   776		void *data;
   777	
   778		rcu_read_lock();
   779	
   780		tbl = rht_dereference_rcu(ht->tbl, ht);
   781		hash = rht_head_hashfn(ht, tbl, obj, params);
   782		elasticity = RHT_ELASTICITY;
   783		bkt = rht_bucket_insert(ht, tbl, hash);
   784		data = ERR_PTR(-ENOMEM);
   785		if (!bkt)
   786			goto out;
   787		pprev = NULL;
   788		flags = rht_lock(tbl, bkt);
   789	
   790		if (unlikely(rcu_access_pointer(tbl->future_tbl))) {
   791	slow_path:
   792			rht_unlock(tbl, bkt, flags);
   793			rcu_read_unlock();
   794			return rhashtable_insert_slow(ht, key, obj);
   795		}
   796	
   797		rht_for_each_from(head, rht_ptr(bkt, tbl, hash), tbl, hash) {
   798			struct rhlist_head *plist;
   799			struct rhlist_head *list;
   800	
   801			elasticity--;
   802			if (!key ||
   803			    (params.obj_cmpfn ?
   804			     params.obj_cmpfn(&arg, rht_obj(ht, head)) :
   805			     rhashtable_compare(&arg, rht_obj(ht, head)))) {
   806				pprev = &head->next;
   807				continue;
   808			}
   809	
   810			data = rht_obj(ht, head);
   811	
   812			if (!rhlist)
   813				goto out_unlock;
   814	
   815	
   816			list = container_of(obj, struct rhlist_head, rhead);
   817			plist = container_of(head, struct rhlist_head, rhead);
   818	
   819			RCU_INIT_POINTER(list->next, plist);
   820			head = rht_dereference_bucket(head->next, tbl, hash);
   821			RCU_INIT_POINTER(list->rhead.next, head);
   822			if (pprev) {
   823				rcu_assign_pointer(*pprev, obj);
   824				rht_unlock(tbl, bkt, flags);
   825			} else
   826				rht_assign_unlock(tbl, bkt, obj, flags);
   827			data = NULL;
   828			goto out;
   829		}
   830	
 > 831		if (elasticity <= 0 && !params->insecure_elasticity)
   832			goto slow_path;
   833	
   834		data = ERR_PTR(-E2BIG);
   835		if (unlikely(rht_grow_above_max(ht, tbl)))
   836			goto out_unlock;
   837	
   838		if (unlikely(rht_grow_above_100(ht, tbl)) &&
   839		    !params->insecure_elasticity)
   840			goto slow_path;
   841	
   842		/* Inserting at head of list makes unlocking free. */
   843		head = rht_ptr(bkt, tbl, hash);
   844	
   845		RCU_INIT_POINTER(obj->next, head);
   846		if (rhlist) {
   847			struct rhlist_head *list;
   848	
   849			list = container_of(obj, struct rhlist_head, rhead);
   850			RCU_INIT_POINTER(list->next, NULL);
   851		}
   852	
   853		atomic_inc(&ht->nelems);
   854		rht_assign_unlock(tbl, bkt, obj, flags);
   855	
   856		if (rht_grow_above_75(ht, tbl))
   857			schedule_work(&ht->run_work);
   858	
   859		data = NULL;
   860	out:
   861		rcu_read_unlock();
   862	
   863		return data;
   864	
   865	out_unlock:
   866		rht_unlock(tbl, bkt, flags);
   867		goto out;
   868	}
   869	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

[-- Attachment #2: reproduce --]
[-- Type: text/plain, Size: 724 bytes --]

reproduce (this is a W=1 build):
        git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git
        git fetch akpm-mm mm-nonmm-unstable
        git checkout akpm-mm/mm-nonmm-unstable
        b4 shazam https://lore.kernel.org/r/aeLgjAeJuidWNy3N@gondor.apana.org.au

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=alpha olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.2.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=alpha SHELL=/bin/bash lib/ 

[-- Attachment #3: config --]
[-- Type: text/plain, Size: 24460 bytes --]

#
# Automatically generated file; DO NOT EDIT.
# Linux/alpha 7.0.0-rc5 Kernel Configuration
#
CONFIG_CC_VERSION_TEXT="alpha-linux-gcc (GCC) 15.2.0"
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=150200
CONFIG_CLANG_VERSION=0
CONFIG_AS_IS_GNU=y
CONFIG_AS_VERSION=24500
CONFIG_LD_IS_BFD=y
CONFIG_LD_VERSION=24500
CONFIG_LLD_VERSION=0
CONFIG_RUSTC_VERSION=0
CONFIG_RUSTC_LLVM_VERSION=0
CONFIG_CC_HAS_ASM_INLINE=y
CONFIG_CC_HAS_ASSUME=y
CONFIG_CC_HAS_NO_PROFILE_FN_ATTR=y
CONFIG_CC_HAS_COUNTED_BY=y
CONFIG_CC_HAS_MULTIDIMENSIONAL_NONSTRING=y
CONFIG_LD_CAN_USE_KEEP_IN_OVERLAY=y
CONFIG_PAHOLE_VERSION=131
CONFIG_IRQ_WORK=y

#
# General setup
#
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
# CONFIG_COMPILE_TEST is not set
# CONFIG_WERROR is not set
CONFIG_LOCALVERSION=""
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_BUILD_SALT=""
CONFIG_DEFAULT_INIT=""
CONFIG_DEFAULT_HOSTNAME="(none)"
# CONFIG_SYSVIPC is not set
# CONFIG_WATCH_QUEUE is not set
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y

#
# IRQ subsystem
#
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
# end of IRQ subsystem

CONFIG_GENERIC_CLOCKEVENTS=y

#
# Timers subsystem
#
CONFIG_HZ_PERIODIC=y
# CONFIG_NO_HZ_IDLE is not set
# CONFIG_NO_HZ is not set
# CONFIG_HIGH_RES_TIMERS is not set
# CONFIG_POSIX_AUX_CLOCKS is not set
# end of Timers subsystem

#
# BPF subsystem
#
# CONFIG_BPF_SYSCALL is not set
# end of BPF subsystem

CONFIG_PREEMPT_NONE_BUILD=y
CONFIG_PREEMPT_NONE=y

#
# CPU/Task time and stats accounting
#
CONFIG_TICK_CPU_ACCOUNTING=y
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_PSI is not set
# end of CPU/Task time and stats accounting

#
# RCU Subsystem
#
CONFIG_TINY_RCU=y
# CONFIG_RCU_EXPERT is not set
CONFIG_TINY_SRCU=y
# end of RCU Subsystem

# CONFIG_IKCONFIG is not set
# CONFIG_IKHEADERS is not set
CONFIG_LOG_BUF_SHIFT=17

#
# Scheduler features
#
# end of Scheduler features

CONFIG_CC_HAS_INT128=y
CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
CONFIG_GCC10_NO_ARRAY_BOUNDS=y
CONFIG_CC_NO_ARRAY_BOUNDS=y
CONFIG_GCC_NO_STRINGOP_OVERFLOW=y
CONFIG_CC_NO_STRINGOP_OVERFLOW=y
# CONFIG_CGROUPS is not set
CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_USER_NS is not set
# CONFIG_PID_NS is not set
# CONFIG_CHECKPOINT_RESTORE is not set
# CONFIG_SCHED_AUTOGROUP is not set
# CONFIG_RELAY is not set
# CONFIG_BLK_DEV_INITRD is not set
# CONFIG_BOOT_CONFIG is not set
CONFIG_CMDLINE_LOG_WRAP_IDEAL_LEN=1021
CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SYSCTL=y
# CONFIG_SYSFS_SYSCALL is not set
CONFIG_HAVE_PCSPKR_PLATFORM=y
# CONFIG_EXPERT is not set
CONFIG_MULTIUSER=y
CONFIG_FHANDLE=y
CONFIG_POSIX_TIMERS=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
CONFIG_FUTEX=y
CONFIG_FUTEX_PI=y
CONFIG_FUTEX_PRIVATE_HASH=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_IO_URING=y
CONFIG_ADVISE_SYSCALLS=y
CONFIG_MEMBARRIER=y
CONFIG_CACHESTAT_SYSCALL=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_SELFTEST is not set
CONFIG_HAVE_PERF_EVENTS=y

#
# Kernel Performance Events And Counters
#
# CONFIG_PERF_EVENTS is not set
# end of Kernel Performance Events And Counters

# CONFIG_PROFILING is not set

#
# Kexec and crash features
#
# end of Kexec and crash features

#
# Live Update and Kexec HandOver
#
# end of Live Update and Kexec HandOver
# end of General setup

CONFIG_ALPHA=y
CONFIG_64BIT=y
CONFIG_MMU=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_PGTABLE_LEVELS=3
CONFIG_AUDIT_ARCH=y

#
# System setup
#
CONFIG_ALPHA_GENERIC=y
# CONFIG_ALPHA_ALCOR is not set
# CONFIG_ALPHA_DP264 is not set
# CONFIG_ALPHA_EIGER is not set
# CONFIG_ALPHA_LX164 is not set
# CONFIG_ALPHA_MARVEL is not set
# CONFIG_ALPHA_MIATA is not set
# CONFIG_ALPHA_MIKASA is not set
# CONFIG_ALPHA_NAUTILUS is not set
# CONFIG_ALPHA_NORITAKE is not set
# CONFIG_ALPHA_PC164 is not set
# CONFIG_ALPHA_RAWHIDE is not set
# CONFIG_ALPHA_RUFFIAN is not set
# CONFIG_ALPHA_RX164 is not set
# CONFIG_ALPHA_SX164 is not set
# CONFIG_ALPHA_SABLE is not set
# CONFIG_ALPHA_SHARK is not set
# CONFIG_ALPHA_TAKARA is not set
# CONFIG_ALPHA_TITAN is not set
# CONFIG_ALPHA_WILDFIRE is not set
CONFIG_ISA=y
CONFIG_ISA_DMA_API=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_ALPHA_BROKEN_IRQ_MASK=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
# CONFIG_SMP is not set
# CONFIG_ARCH_SPARSEMEM_ENABLE is not set
# CONFIG_ALPHA_WTINT is not set
# CONFIG_VERBOSE_MCHECK is not set
# CONFIG_HZ_32 is not set
# CONFIG_HZ_64 is not set
# CONFIG_HZ_128 is not set
# CONFIG_HZ_256 is not set
CONFIG_HZ_1024=y
# CONFIG_HZ_1200 is not set
CONFIG_HZ=1024
# CONFIG_SRM_ENV is not set
# end of System setup

CONFIG_DUMMY_CONSOLE=y
CONFIG_CPU_MITIGATIONS=y
CONFIG_ARCH_HAS_DMA_OPS=y

#
# General architecture-dependent options
#
CONFIG_HAVE_64BIT_ALIGNED_ACCESS=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_ARCH_32BIT_USTAT_F_TINODE=y
CONFIG_HAVE_ASM_MODVERSIONS=y
CONFIG_MMU_GATHER_TABLE_FREE=y
CONFIG_MMU_GATHER_RCU_TABLE_FREE=y
CONFIG_MMU_GATHER_NO_RANGE=y
CONFIG_MMU_GATHER_MERGE_VMAS=y
CONFIG_MMU_LAZY_TLB_REFCOUNT=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_LTO_NONE=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_MODULES_USE_ELF_RELA=y
CONFIG_HAVE_PAGE_SIZE_8KB=y
CONFIG_PAGE_SIZE_8KB=y
CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
CONFIG_PAGE_SHIFT=13
CONFIG_ISA_BUS_API=y
CONFIG_ODD_RT_SIGACTION=y
CONFIG_OLD_SIGSUSPEND=y
# CONFIG_COMPAT_32BIT_TIME is not set
CONFIG_ARCH_NO_PREEMPT=y
CONFIG_CPU_NO_EFFICIENT_FFS=y

#
# GCOV-based kernel profiling
#
# end of GCOV-based kernel profiling

CONFIG_FUNCTION_ALIGNMENT=0
CONFIG_CC_HAS_MIN_FUNCTION_ALIGNMENT=y
CONFIG_CC_HAS_SANE_FUNCTION_ALIGNMENT=y
# end of General architecture-dependent options

CONFIG_RT_MUTEXES=y
# CONFIG_MODULES is not set
CONFIG_BLOCK=y
# CONFIG_BLOCK_LEGACY_AUTOLOAD is not set
# CONFIG_BLK_DEV_BSGLIB is not set
# CONFIG_BLK_DEV_INTEGRITY is not set
# CONFIG_BLK_DEV_WRITE_MOUNTED is not set
# CONFIG_BLK_DEV_ZONED is not set
# CONFIG_BLK_WBT is not set
# CONFIG_BLK_INLINE_ENCRYPTION is not set

#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_OSF_PARTITION=y
CONFIG_MSDOS_PARTITION=y
CONFIG_EFI_PARTITION=y
# end of Partition Types

#
# IO Schedulers
#
# CONFIG_MQ_IOSCHED_DEADLINE is not set
# CONFIG_MQ_IOSCHED_KYBER is not set
# CONFIG_IOSCHED_BFQ is not set
# end of IO Schedulers

CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y

#
# Executable file formats
#
# CONFIG_BINFMT_ELF is not set
# CONFIG_BINFMT_SCRIPT is not set
# CONFIG_BINFMT_MISC is not set
CONFIG_COREDUMP=y
# end of Executable file formats

#
# Memory Management options
#
# CONFIG_SWAP is not set

#
# Slab allocator options
#
CONFIG_SLUB=y
# CONFIG_SLAB_MERGE_DEFAULT is not set
# CONFIG_SLAB_FREELIST_RANDOM is not set
# CONFIG_SLAB_FREELIST_HARDENED is not set
# CONFIG_SLAB_BUCKETS is not set
# CONFIG_SLUB_STATS is not set
# CONFIG_RANDOM_KMALLOC_CACHES is not set
# end of Slab allocator options

# CONFIG_SHUFFLE_PAGE_ALLOCATOR is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_FLATMEM=y
CONFIG_EXCLUSIVE_SYSTEM_RAM=y
# CONFIG_COMPACTION is not set
# CONFIG_PAGE_REPORTING is not set
CONFIG_PCP_BATCH_SCALE_MAX=5
CONFIG_PHYS_ADDR_T_64BIT=y
# CONFIG_KSM is not set
CONFIG_DEFAULT_MMAP_MIN_ADDR=4096
CONFIG_PAGE_MAPCOUNT=y
CONFIG_NEED_PER_CPU_KM=y
# CONFIG_CMA is not set
CONFIG_PAGE_BLOCK_MAX_ORDER=10
# CONFIG_IDLE_PAGE_TRACKING is not set
CONFIG_ARCH_HAS_CURRENT_STACK_POINTER=y
CONFIG_ZONE_DMA=y
CONFIG_VM_EVENT_COUNTERS=y
# CONFIG_PERCPU_STATS is not set

#
# GUP_TEST needs to have DEBUG_FS enabled
#
# CONFIG_DMAPOOL_TEST is not set
# CONFIG_ANON_VMA_NAME is not set
# CONFIG_USERFAULTFD is not set
# CONFIG_LRU_GEN is not set
CONFIG_LOCK_MM_AND_FIND_VMA=y
CONFIG_PT_RECLAIM=y

#
# Data Access Monitoring
#
# CONFIG_DAMON is not set
# end of Data Access Monitoring
# end of Memory Management options

# CONFIG_NET is not set

#
# Device Drivers
#
CONFIG_HAVE_EISA=y
# CONFIG_EISA is not set
CONFIG_HAVE_PCI=y
CONFIG_FORCE_PCI=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_PCI=y
CONFIG_PCI_DOMAINS=y
CONFIG_PCI_SYSCALL=y
# CONFIG_PCIEPORTBUS is not set
CONFIG_PCIEASPM=y
CONFIG_PCIEASPM_DEFAULT=y
# CONFIG_PCIEASPM_POWERSAVE is not set
# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
# CONFIG_PCIEASPM_PERFORMANCE is not set
# CONFIG_PCIE_PTM is not set
# CONFIG_PCI_MSI is not set
CONFIG_PCI_QUIRKS=y
# CONFIG_PCI_STUB is not set
# CONFIG_PCI_TSM is not set
# CONFIG_PCI_DOE is not set
# CONFIG_PCI_IOV is not set
# CONFIG_PCI_PRI is not set
# CONFIG_PCI_PASID is not set
# CONFIG_PCIE_TPH is not set
CONFIG_VGA_ARB=y
CONFIG_VGA_ARB_MAX_GPUS=16
# CONFIG_HOTPLUG_PCI is not set

#
# PCI controller drivers
#

#
# Cadence-based PCIe controllers
#
# end of Cadence-based PCIe controllers

#
# DesignWare-based PCIe controllers
#
# end of DesignWare-based PCIe controllers

#
# Mobiveil-based PCIe controllers
#
# end of Mobiveil-based PCIe controllers

#
# PLDA-based PCIe controllers
#
# end of PLDA-based PCIe controllers
# end of PCI controller drivers

#
# PCI Endpoint
#
# CONFIG_PCI_ENDPOINT is not set
# end of PCI Endpoint

#
# PCI switch controller drivers
#
# CONFIG_PCI_SW_SWITCHTEC is not set
# end of PCI switch controller drivers

# CONFIG_PCI_PWRCTRL_SLOT is not set
# CONFIG_CXL_BUS is not set
# CONFIG_PCCARD is not set
# CONFIG_RAPIDIO is not set

#
# Generic Driver Options
#
# CONFIG_UEVENT_HELPER is not set
# CONFIG_DEVTMPFS is not set
# CONFIG_STANDALONE is not set
# CONFIG_PREVENT_FIRMWARE_BUILD is not set

#
# Firmware loader
#
CONFIG_FW_LOADER=y
CONFIG_EXTRA_FIRMWARE=""
# CONFIG_FW_LOADER_USER_HELPER is not set
# CONFIG_FW_LOADER_COMPRESS is not set
# CONFIG_FW_UPLOAD is not set
# end of Firmware loader

CONFIG_ALLOW_DEV_COREDUMP=y
CONFIG_GENERIC_CPU_VULNERABILITIES=y
# CONFIG_FW_DEVLINK_SYNC_STATE_TIMEOUT is not set
# end of Generic Driver Options

#
# Bus devices
#
# CONFIG_MHI_BUS is not set
# CONFIG_MHI_BUS_EP is not set
# end of Bus devices

#
# Firmware Drivers
#

#
# ARM System Control and Management Interface Protocol
#
# end of ARM System Control and Management Interface Protocol

# CONFIG_GOOGLE_FIRMWARE is not set

#
# Qualcomm firmware drivers
#
# end of Qualcomm firmware drivers

#
# Tegra firmware driver
#
# end of Tegra firmware driver
# end of Firmware Drivers

# CONFIG_FWCTL is not set
# CONFIG_GNSS is not set
# CONFIG_MTD is not set
# CONFIG_OF is not set
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
# CONFIG_PARPORT is not set
# CONFIG_PNP is not set
# CONFIG_BLK_DEV is not set

#
# NVME Support
#
# CONFIG_BLK_DEV_NVME is not set
# CONFIG_NVME_FC is not set
# CONFIG_NVME_TARGET is not set
# end of NVME Support

#
# Misc devices
#
# CONFIG_DUMMY_IRQ is not set
# CONFIG_PHANTOM is not set
# CONFIG_RPMB is not set
# CONFIG_TIFM_CORE is not set
# CONFIG_ENCLOSURE_SERVICES is not set
# CONFIG_HP_ILO is not set
# CONFIG_SRAM is not set
# CONFIG_DW_XDATA_PCIE is not set
# CONFIG_PCI_ENDPOINT_TEST is not set
# CONFIG_XILINX_SDFEC is not set
# CONFIG_NTSYNC is not set
# CONFIG_C2PORT is not set

#
# EEPROM support
#
# CONFIG_EEPROM_93CX6 is not set
# end of EEPROM support

# CONFIG_CB710_CORE is not set

#
# Altera FPGA firmware download module (requires I2C)
#
# CONFIG_INTEL_MEI is not set
# CONFIG_GENWQE is not set
# CONFIG_MISC_ALCOR_PCI is not set
# CONFIG_MISC_RTSX_PCI is not set
# CONFIG_PVPANIC is not set
# end of Misc devices

#
# SCSI device support
#
CONFIG_SCSI_MOD=y
# CONFIG_RAID_ATTRS is not set
# CONFIG_SCSI is not set
# end of SCSI device support

# CONFIG_ATA is not set
# CONFIG_MD is not set
# CONFIG_TARGET_CORE is not set
# CONFIG_FUSION is not set

#
# IEEE 1394 (FireWire) support
#
# CONFIG_FIREWIRE is not set
# CONFIG_FIREWIRE_NOSY is not set
# end of IEEE 1394 (FireWire) support

#
# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
# CONFIG_INPUT_SPARSEKMAP is not set
# CONFIG_INPUT_MATRIXKMAP is not set

#
# Userland interfaces
#
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set

#
# Input Device Drivers
#
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TABLET is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set
# CONFIG_RMI4_CORE is not set

#
# Hardware I/O ports
#
# CONFIG_SERIO is not set
CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
# CONFIG_GAMEPORT is not set
# end of Hardware I/O ports
# end of Input device support

#
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
# CONFIG_VT_HW_CONSOLE_BINDING is not set
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_LEGACY_TIOCSTI is not set
# CONFIG_LDISC_AUTOLOAD is not set

#
# Serial drivers
#
# CONFIG_SERIAL_8250 is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_UARTLITE is not set
# CONFIG_SERIAL_JSM is not set
# CONFIG_SERIAL_SCCNXP is not set
# CONFIG_SERIAL_ALTERA_JTAGUART is not set
# CONFIG_SERIAL_ALTERA_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_RP2 is not set
# CONFIG_SERIAL_FSL_LPUART is not set
# CONFIG_SERIAL_FSL_LINFLEXUART is not set
# end of Serial drivers

# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_NOZOMI is not set
# CONFIG_NULL_TTY is not set
# CONFIG_SERIAL_DEV_BUS is not set
# CONFIG_VIRTIO_CONSOLE is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_DTLK is not set
# CONFIG_APPLICOM is not set
# CONFIG_DEVMEM is not set
# CONFIG_DEVPORT is not set
# CONFIG_TCG_TPM is not set
# CONFIG_XILLYBUS is not set
# end of Character devices

#
# I2C support
#
# CONFIG_I2C is not set
# end of I2C support

# CONFIG_I3C is not set
# CONFIG_SPI is not set
# CONFIG_SPMI is not set
# CONFIG_HSI is not set
# CONFIG_PPS is not set

#
# PTP clock support
#
CONFIG_PTP_1588_CLOCK_OPTIONAL=y

#
# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
#
# end of PTP clock support

#
# DPLL device support
#
# end of DPLL device support

# CONFIG_PINCTRL is not set
CONFIG_GPIOLIB_LEGACY=y
# CONFIG_GPIOLIB is not set
# CONFIG_W1 is not set
# CONFIG_POWER_RESET is not set
# CONFIG_POWER_SEQUENCING is not set
# CONFIG_POWER_SUPPLY is not set
# CONFIG_HWMON is not set
# CONFIG_THERMAL is not set
# CONFIG_WATCHDOG is not set
CONFIG_SSB_POSSIBLE=y
# CONFIG_SSB is not set
CONFIG_BCMA_POSSIBLE=y
# CONFIG_BCMA is not set

#
# Multifunction device drivers
#
# CONFIG_MFD_MADERA is not set
# CONFIG_LPC_ICH is not set
# CONFIG_LPC_SCH is not set
# CONFIG_MFD_JANZ_CMODIO is not set
# CONFIG_MFD_KEMPLD is not set
# CONFIG_MFD_MT6397 is not set
# CONFIG_MFD_RDC321X is not set
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_SYSCON is not set
# CONFIG_MFD_TQMX86 is not set
# CONFIG_MFD_VX855 is not set
# end of Multifunction device drivers

# CONFIG_REGULATOR is not set
# CONFIG_RC_CORE is not set

#
# CEC support
#
# CONFIG_MEDIA_CEC_SUPPORT is not set
# end of CEC support

# CONFIG_MEDIA_SUPPORT is not set

#
# Graphics support
#
# CONFIG_AUXDISPLAY is not set
# CONFIG_AGP is not set
# CONFIG_DRM is not set

#
# Frame buffer Devices
#
# CONFIG_FB is not set
# end of Frame buffer Devices

#
# Backlight & LCD device support
#
# CONFIG_LCD_CLASS_DEVICE is not set
# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
# end of Backlight & LCD device support

#
# Console display driver support
#
# CONFIG_VGA_CONSOLE is not set
CONFIG_DUMMY_CONSOLE_COLUMNS=80
CONFIG_DUMMY_CONSOLE_ROWS=25
# end of Console display driver support

# CONFIG_TRACE_GPU_MEM is not set
# end of Graphics support

# CONFIG_SOUND is not set
# CONFIG_HID_SUPPORT is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
# CONFIG_USB_SUPPORT is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
# CONFIG_NEW_LEDS is not set
# CONFIG_ACCESSIBILITY is not set
# CONFIG_RTC_CLASS is not set
# CONFIG_DMADEVICES is not set

#
# DMABUF options
#
# CONFIG_SYNC_FILE is not set
# CONFIG_DMABUF_HEAPS is not set
# end of DMABUF options

# CONFIG_UIO is not set
# CONFIG_VFIO is not set
# CONFIG_VIRT_DRIVERS is not set
# CONFIG_VIRTIO_MENU is not set
# CONFIG_VHOST_MENU is not set

#
# Microsoft Hyper-V guest support
#
# end of Microsoft Hyper-V guest support

# CONFIG_GREYBUS is not set
# CONFIG_COMEDI is not set
# CONFIG_GPIB is not set
# CONFIG_STAGING is not set
# CONFIG_GOLDFISH is not set
# CONFIG_COMMON_CLK is not set
# CONFIG_HWSPINLOCK is not set

#
# Clock Source drivers
#
CONFIG_I8253_LOCK=y
CONFIG_CLKBLD_I8253=y
# end of Clock Source drivers

# CONFIG_MAILBOX is not set
# CONFIG_IOMMU_SUPPORT is not set

#
# Remoteproc drivers
#
# CONFIG_REMOTEPROC is not set
# end of Remoteproc drivers

#
# Rpmsg drivers
#
# CONFIG_RPMSG_VIRTIO is not set
# end of Rpmsg drivers

#
# SOC (System On Chip) specific Drivers
#

#
# Amlogic SoC drivers
#
# end of Amlogic SoC drivers

#
# Broadcom SoC drivers
#
# end of Broadcom SoC drivers

#
# NXP/Freescale QorIQ SoC drivers
#
# end of NXP/Freescale QorIQ SoC drivers

#
# fujitsu SoC drivers
#
# end of fujitsu SoC drivers

#
# i.MX SoC drivers
#
# end of i.MX SoC drivers

#
# Enable LiteX SoC Builder specific drivers
#
# end of Enable LiteX SoC Builder specific drivers

# CONFIG_WPCM450_SOC is not set

#
# Qualcomm SoC drivers
#
# end of Qualcomm SoC drivers

# CONFIG_SOC_TI is not set

#
# Xilinx SoC drivers
#
# end of Xilinx SoC drivers
# end of SOC (System On Chip) specific Drivers

#
# PM Domains
#

#
# Amlogic PM Domains
#
# end of Amlogic PM Domains

#
# Broadcom PM Domains
#
# end of Broadcom PM Domains

#
# i.MX PM Domains
#
# end of i.MX PM Domains

#
# Qualcomm PM Domains
#
# end of Qualcomm PM Domains
# end of PM Domains

# CONFIG_PM_DEVFREQ is not set
# CONFIG_EXTCON is not set
# CONFIG_MEMORY is not set
# CONFIG_IIO is not set
# CONFIG_NTB is not set
# CONFIG_PWM is not set

#
# IRQ chip support
#
# end of IRQ chip support

# CONFIG_IPACK_BUS is not set
# CONFIG_RESET_CONTROLLER is not set

#
# PHY Subsystem
#
# CONFIG_GENERIC_PHY is not set
# CONFIG_PHY_CAN_TRANSCEIVER is not set

#
# PHY drivers for Broadcom platforms
#
# CONFIG_BCM_KONA_USB2_PHY is not set
# end of PHY drivers for Broadcom platforms

# CONFIG_PHY_PXA_28NM_HSIC is not set
# CONFIG_PHY_PXA_28NM_USB2 is not set
# end of PHY Subsystem

# CONFIG_POWERCAP is not set
# CONFIG_MCB is not set
# CONFIG_RAS is not set
# CONFIG_USB4 is not set

#
# Android
#
# end of Android

# CONFIG_DAX is not set
# CONFIG_NVMEM is not set

#
# HW tracing support
#
# CONFIG_STM is not set
# CONFIG_INTEL_TH is not set
# end of HW tracing support

# CONFIG_FPGA is not set
# CONFIG_SIOX is not set
# CONFIG_SLIMBUS is not set
# CONFIG_INTERCONNECT is not set
# CONFIG_COUNTER is not set
# CONFIG_PECI is not set
# CONFIG_HTE is not set
# end of Device Drivers

#
# File systems
#
# CONFIG_VALIDATE_FS_PARSER is not set
CONFIG_FS_IOMAP=y
# CONFIG_EXT2_FS is not set
# CONFIG_EXT4_FS is not set
# CONFIG_JFS_FS is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_BTRFS_FS is not set
# CONFIG_NILFS2_FS is not set
# CONFIG_F2FS_FS is not set
CONFIG_EXPORTFS=y
# CONFIG_EXPORTFS_BLOCK_OPS is not set
CONFIG_FILE_LOCKING=y
# CONFIG_FS_ENCRYPTION is not set
# CONFIG_FS_VERITY is not set
# CONFIG_DNOTIFY is not set
# CONFIG_INOTIFY_USER is not set
# CONFIG_FANOTIFY is not set
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS_FS is not set
# CONFIG_FUSE_FS is not set
# CONFIG_OVERLAY_FS is not set

#
# Caches
#
# end of Caches

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
# CONFIG_UDF_FS is not set
# end of CD-ROM/DVD Filesystems

#
# DOS/FAT/EXFAT/NT Filesystems
#
# CONFIG_MSDOS_FS is not set
# CONFIG_VFAT_FS is not set
# CONFIG_EXFAT_FS is not set
# CONFIG_NTFS3_FS is not set
# CONFIG_NTFS_FS is not set
# end of DOS/FAT/EXFAT/NT Filesystems

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
# CONFIG_PROC_KCORE is not set
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
# CONFIG_PROC_CHILDREN is not set
CONFIG_KERNFS=y
CONFIG_SYSFS=y
# CONFIG_TMPFS is not set
# CONFIG_CONFIGFS_FS is not set
# end of Pseudo filesystems

# CONFIG_MISC_FILESYSTEMS is not set
# CONFIG_NLS is not set
# CONFIG_UNICODE is not set
CONFIG_IO_WQ=y
# end of File systems

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY_DMESG_RESTRICT is not set
CONFIG_PROC_MEM_ALWAYS_FORCE=y
# CONFIG_PROC_MEM_FORCE_PTRACE is not set
# CONFIG_PROC_MEM_NO_FORCE is not set
# CONFIG_SECURITY is not set
# CONFIG_SECURITYFS is not set
# CONFIG_STATIC_USERMODEHELPER is not set
CONFIG_DEFAULT_SECURITY_DAC=y

#
# Kernel hardening options
#

#
# Memory initialization
#
CONFIG_CC_HAS_AUTO_VAR_INIT_PATTERN=y
CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO_BARE=y
CONFIG_CC_HAS_AUTO_VAR_INIT_ZERO=y
# CONFIG_INIT_STACK_NONE is not set
# CONFIG_INIT_STACK_ALL_PATTERN is not set
CONFIG_INIT_STACK_ALL_ZERO=y
# CONFIG_INIT_ON_ALLOC_DEFAULT_ON is not set
# CONFIG_INIT_ON_FREE_DEFAULT_ON is not set
CONFIG_CC_HAS_ZERO_CALL_USED_REGS=y
# CONFIG_ZERO_CALL_USED_REGS is not set
# end of Memory initialization

#
# Bounds checking
#
# CONFIG_HARDENED_USERCOPY is not set
# end of Bounds checking

#
# Hardening of kernel data structures
#
# CONFIG_LIST_HARDENED is not set
# CONFIG_BUG_ON_DATA_CORRUPTION is not set
# end of Hardening of kernel data structures

CONFIG_RANDSTRUCT_NONE=y
# end of Kernel hardening options
# end of Security options

# CONFIG_CRYPTO is not set

#
# Library routines
#
# CONFIG_PACKING is not set
CONFIG_BITREVERSE=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
# CONFIG_CORDIC is not set
# CONFIG_PRIME_NUMBERS is not set
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_CRC32=y
CONFIG_CRC_OPTIMIZATIONS=y

#
# Crypto library routines
#
CONFIG_CRYPTO_LIB_POLY1305_RSIZE=1
# end of Crypto library routines

# CONFIG_RANDOM32_SELFTEST is not set
# CONFIG_XZ_DEC is not set
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_IOPORT_MAP=y
CONFIG_HAS_DMA=y
CONFIG_DMA_OPS_HELPERS=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
CONFIG_DMA_NEED_SYNC=y
# CONFIG_DMA_API_DEBUG is not set
CONFIG_FORCE_NR_CPUS=y
# CONFIG_IRQ_POLL is not set
CONFIG_ARCH_NO_SG_CHAIN=y
CONFIG_SBITMAP=y
# CONFIG_LWQ_TEST is not set
# end of Library routines

#
# Kernel hacking
#

#
# printk and dmesg options
#
# CONFIG_PRINTK_TIME is not set
# CONFIG_PRINTK_CALLER is not set
# CONFIG_STACKTRACE_BUILD_ID is not set
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
CONFIG_CONSOLE_LOGLEVEL_QUIET=4
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
# CONFIG_DYNAMIC_DEBUG is not set
# CONFIG_DYNAMIC_DEBUG_CORE is not set
# CONFIG_SYMBOLIC_ERRNAME is not set
# end of printk and dmesg options

# CONFIG_DEBUG_KERNEL is not set

#
# Compile-time checks and compiler options
#
CONFIG_AS_HAS_NON_CONST_ULEB128=y
CONFIG_FRAME_WARN=2048
# CONFIG_STRIP_ASM_SYMS is not set
# CONFIG_HEADERS_INSTALL is not set
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# end of Compile-time checks and compiler options

#
# Generic Kernel Debugging Instruments
#
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_DEBUG_FS is not set
CONFIG_HAVE_KCSAN_COMPILER=y
# end of Generic Kernel Debugging Instruments

#
# Networking Debugging
#
# end of Networking Debugging

#
# Memory Debugging
#
# CONFIG_PAGE_EXTENSION is not set
CONFIG_SLUB_DEBUG=y
# CONFIG_SLUB_DEBUG_ON is not set
# CONFIG_PAGE_POISONING is not set
CONFIG_DEBUG_MEMORY_INIT=y
# CONFIG_MEM_ALLOC_PROFILING is not set
CONFIG_CC_HAS_WORKING_NOSANITIZE_ADDRESS=y
# end of Memory Debugging

#
# Debug Oops, Lockups and Hangs
#
# CONFIG_PANIC_ON_OOPS is not set
CONFIG_PANIC_TIMEOUT=0
# end of Debug Oops, Lockups and Hangs

#
# Scheduler Debugging
#
# CONFIG_SCHEDSTATS is not set
# end of Scheduler Debugging

#
# Lock Debugging (spinlocks, mutexes, etc...)
#
# CONFIG_WW_MUTEX_SELFTEST is not set
# end of Lock Debugging (spinlocks, mutexes, etc...)

# CONFIG_DEBUG_IRQFLAGS is not set

#
# Debug kernel data structures
#
# end of Debug kernel data structures

#
# RCU Debugging
#
# end of RCU Debugging

# CONFIG_SAMPLES is not set

#
# alpha Debugging
#
CONFIG_EARLY_PRINTK=y
# CONFIG_ALPHA_LEGACY_START_ADDRESS is not set
CONFIG_MATHEMU=y
# end of alpha Debugging

#
# Kernel Testing and Coverage
#
# CONFIG_KUNIT is not set
# CONFIG_RUNTIME_TESTING_MENU is not set
# end of Kernel Testing and Coverage

#
# Rust hacking
#
# end of Rust hacking
# end of Kernel hacking

Re: [PATCH] rhashtable: Restore insecure_elasticity toggle

[kernel test robot]

Hi Herbert,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-nonmm-unstable]
[also build test WARNING on net/main net-next/main linus/master v7.0]
[cannot apply to next-20260420]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Herbert-Xu/rhashtable-Restore-insecure_elasticity-toggle/20260418-233732
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable
patch link:    https://lore.kernel.org/r/aeLgjAeJuidWNy3N%40gondor.apana.org.au
patch subject: [PATCH] rhashtable: Restore insecure_elasticity toggle
config: sparc64-allmodconfig (https://download.01.org/0day-ci/archive/20260421/202604210112.4dByOk9v-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 5bac06718f502014fade905512f1d26d578a18f3)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260421/202604210112.4dByOk9v-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604210112.4dByOk9v-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from net/mac80211/s1g.c:9:
   In file included from net/mac80211/ieee80211_i.h:27:
   include/linux/rhashtable.h:831:32: error: member reference type 'struct rhashtable_params' is not a pointer; did you mean to use '.'?
     831 |         if (elasticity <= 0 && !params->insecure_elasticity)
         |                                 ~~~~~~^~
         |                                       .
   include/linux/rhashtable.h:839:13: error: member reference type 'struct rhashtable_params' is not a pointer; did you mean to use '.'?
     839 |             !params->insecure_elasticity)
         |              ~~~~~~^~
         |                    .
>> net/mac80211/s1g.c:104:36: warning: implicit conversion from 'unsigned long' to '__u16' (aka 'unsigned short') changes value from 18446744073709551614 to 65534 [-Wconstant-conversion]
     104 |         twt_agrt->req_type &= cpu_to_le16(~IEEE80211_TWT_REQTYPE_REQUEST);
         |                               ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/byteorder/generic.h:90:21: note: expanded from macro 'cpu_to_le16'
      90 | #define cpu_to_le16 __cpu_to_le16
         |                     ^
   include/uapi/linux/byteorder/big_endian.h:36:53: note: expanded from macro '__cpu_to_le16'
      36 | #define __cpu_to_le16(x) ((__force __le16)__swab16((x)))
         |                                           ~~~~~~~~~~^~~
   include/uapi/linux/swab.h:107:12: note: expanded from macro '__swab16'
     107 |         __fswab16(x))
         |         ~~~~~~~~~ ^
   1 warning and 2 errors generated.


vim +104 net/mac80211/s1g.c

f5a4c24e689f54e Lorenzo Bianconi 2021-08-23   95  
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23   96  static void
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23   97  ieee80211_s1g_rx_twt_setup(struct ieee80211_sub_if_data *sdata,
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23   98  			   struct sta_info *sta, struct sk_buff *skb)
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23   99  {
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  100  	struct ieee80211_mgmt *mgmt = (void *)skb->data;
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  101  	struct ieee80211_twt_setup *twt = (void *)mgmt->u.action.u.s1g.variable;
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  102  	struct ieee80211_twt_params *twt_agrt = (void *)twt->params;
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  103  
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23 @104  	twt_agrt->req_type &= cpu_to_le16(~IEEE80211_TWT_REQTYPE_REQUEST);
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  105  
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  106  	/* broadcast TWT not supported yet */
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  107  	if (twt->control & IEEE80211_TWT_CONTROL_NEG_TYPE_BROADCAST) {
7ff379ba2d4b7b2 Johannes Berg    2021-09-27  108  		twt_agrt->req_type &=
7ff379ba2d4b7b2 Johannes Berg    2021-09-27  109  			~cpu_to_le16(IEEE80211_TWT_REQTYPE_SETUP_CMD);
7ff379ba2d4b7b2 Johannes Berg    2021-09-27  110  		twt_agrt->req_type |=
7ff379ba2d4b7b2 Johannes Berg    2021-09-27  111  			le16_encode_bits(TWT_SETUP_CMD_REJECT,
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  112  					 IEEE80211_TWT_REQTYPE_SETUP_CMD);
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  113  		goto out;
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  114  	}
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  115  
30ac96f7cc973bb Howard Hsu       2022-10-27  116  	/* TWT Information not supported yet */
30ac96f7cc973bb Howard Hsu       2022-10-27  117  	twt->control |= IEEE80211_TWT_CONTROL_RX_DISABLED;
30ac96f7cc973bb Howard Hsu       2022-10-27  118  
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  119  	drv_add_twt_setup(sdata->local, sdata, &sta->sta, twt);
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  120  out:
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  121  	ieee80211_s1g_send_twt_setup(sdata, mgmt->sa, sdata->vif.addr, twt);
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  122  }
f5a4c24e689f54e Lorenzo Bianconi 2021-08-23  123  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki