<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/arch, branch v6.1.175</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>powerpc/time: Remove redundant preempt_disable|enable() calls from arch_irq_work_raise()</title>
<updated>2026-06-01T15:39:40+00:00</updated>
<author>
<name>Sayali Patil</name>
<email>sayalip@linux.ibm.com</email>
</author>
<published>2026-05-13T08:14:13+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=51860e423592893cd7bfa7287d99a3aff4dc3a9d'/>
<id>51860e423592893cd7bfa7287d99a3aff4dc3a9d</id>
<content type='text'>
[ Upstream commit 31467b23823ffec1f6fff407f8e3ca9af8b7491a ]

A kernel panic is observed when handling machine check exceptions from
real mode.

  BUG: Unable to handle kernel data access on read at 0xc00000006be21300
  Oops: Kernel access of bad area, sig: 11 [#1]
  MSR:  8000000000001003 &lt;SF,ME,RI,LE&gt;  CR: 88222248  XER: 00000005
  CFAR: c00000000003ffc4 DAR: c00000006be21300 DSISR: 40000000 IRQMASK: 0
  NIP [c000000000029e40] arch_irq_work_raise+0x10/0x70
  LR [c00000000003ffc8] machine_check_queue_event+0xa8/0x150
  Call Trace:
  [c0000000179d3c70] [c00000000003ff64] machine_check_queue_event+0x44/0x150
  [c0000000179d3d30] [c0000000000084e0] machine_check_early_common+0x1f0/0x2c0

The crash occurs because arch_irq_work_raise() calls preempt_disable()
from machine check exception (MCE) handlers running in real mode. In
this context, accessing the preempt_count can fault, leading to the panic.

The preempt_disable()/preempt_enable() pair in arch_irq_work_raise()
was originally added by commit 0fe1ac48bef0 ("powerpc/perf_event: Fix
oops due to perf_event_do_pending call") to avoid races while raising
irq work from exception context.

Later, commit 471ba0e686cb ("irq_work: Do not raise an IPI when
queueing work on the local CPU") added preemption protection in
irq_work_queue() path, while commit 20b876918c06 ("irq_work: Use per
cpu atomics instead of regular atomics") added equivalent
protection in irq_work_queue_on() before reaching arch_irq_work_raise():

  irq_work_queue() / irq_work_queue_on()
    -&gt; preempt_disable()
      -&gt; __irq_work_queue_local()
        -&gt; irq_work_raise()
          -&gt; arch_irq_work_raise()

As a result, callers other than mce_irq_work_raise() already execute
with preemption disabled, making the additional
preempt_disable()/preempt_enable() pair in arch_irq_work_raise()
redundant.

The arch_irq_work_raise() function executes in NMI context when called
from MCE handler. Hence we will not be preempted or scheduled out since
we are in NMI context with MSR[EE]=0. Therefore, it is safe to remove
the preempt_disable()/preempt_enable() calls from here.

Remove it to avoid accessing preempt_count from real mode context.

Fixes: cc15ff327569 ("powerpc/mce: Avoid using irq_work_queue() in realmode")
Suggested-by: Mahesh Salgaonkar &lt;mahesh@linux.ibm.com&gt;
Acked-by: Shrikanth Hegde &lt;sshegde@linux.ibm.com&gt;
Reviewed-by: Ritesh Harjani (IBM) &lt;ritesh.list@gmail.com&gt;
Signed-off-by: Sayali Patil &lt;sayalip@linux.ibm.com&gt;
[Maddy: Fixed the commit title]
Signed-off-by: Madhavan Srinivasan &lt;maddy@linux.ibm.com&gt;
Link: https://patch.msgid.link/20260513081413.222490-1-sayalip@linux.ibm.com
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 31467b23823ffec1f6fff407f8e3ca9af8b7491a ]

A kernel panic is observed when handling machine check exceptions from
real mode.

  BUG: Unable to handle kernel data access on read at 0xc00000006be21300
  Oops: Kernel access of bad area, sig: 11 [#1]
  MSR:  8000000000001003 &lt;SF,ME,RI,LE&gt;  CR: 88222248  XER: 00000005
  CFAR: c00000000003ffc4 DAR: c00000006be21300 DSISR: 40000000 IRQMASK: 0
  NIP [c000000000029e40] arch_irq_work_raise+0x10/0x70
  LR [c00000000003ffc8] machine_check_queue_event+0xa8/0x150
  Call Trace:
  [c0000000179d3c70] [c00000000003ff64] machine_check_queue_event+0x44/0x150
  [c0000000179d3d30] [c0000000000084e0] machine_check_early_common+0x1f0/0x2c0

The crash occurs because arch_irq_work_raise() calls preempt_disable()
from machine check exception (MCE) handlers running in real mode. In
this context, accessing the preempt_count can fault, leading to the panic.

The preempt_disable()/preempt_enable() pair in arch_irq_work_raise()
was originally added by commit 0fe1ac48bef0 ("powerpc/perf_event: Fix
oops due to perf_event_do_pending call") to avoid races while raising
irq work from exception context.

Later, commit 471ba0e686cb ("irq_work: Do not raise an IPI when
queueing work on the local CPU") added preemption protection in
irq_work_queue() path, while commit 20b876918c06 ("irq_work: Use per
cpu atomics instead of regular atomics") added equivalent
protection in irq_work_queue_on() before reaching arch_irq_work_raise():

  irq_work_queue() / irq_work_queue_on()
    -&gt; preempt_disable()
      -&gt; __irq_work_queue_local()
        -&gt; irq_work_raise()
          -&gt; arch_irq_work_raise()

As a result, callers other than mce_irq_work_raise() already execute
with preemption disabled, making the additional
preempt_disable()/preempt_enable() pair in arch_irq_work_raise()
redundant.

The arch_irq_work_raise() function executes in NMI context when called
from MCE handler. Hence we will not be preempted or scheduled out since
we are in NMI context with MSR[EE]=0. Therefore, it is safe to remove
the preempt_disable()/preempt_enable() calls from here.

Remove it to avoid accessing preempt_count from real mode context.

Fixes: cc15ff327569 ("powerpc/mce: Avoid using irq_work_queue() in realmode")
Suggested-by: Mahesh Salgaonkar &lt;mahesh@linux.ibm.com&gt;
Acked-by: Shrikanth Hegde &lt;sshegde@linux.ibm.com&gt;
Reviewed-by: Ritesh Harjani (IBM) &lt;ritesh.list@gmail.com&gt;
Signed-off-by: Sayali Patil &lt;sayalip@linux.ibm.com&gt;
[Maddy: Fixed the commit title]
Signed-off-by: Madhavan Srinivasan &lt;maddy@linux.ibm.com&gt;
Link: https://patch.msgid.link/20260513081413.222490-1-sayalip@linux.ibm.com
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ARM: integrator: Fix early initialization</title>
<updated>2026-06-01T15:39:39+00:00</updated>
<author>
<name>Guenter Roeck</name>
<email>linux@roeck-us.net</email>
</author>
<published>2026-05-05T19:15:37+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=6624854554c4c2bdfed3559e5c11bb03b16e7bd1'/>
<id>6624854554c4c2bdfed3559e5c11bb03b16e7bd1</id>
<content type='text'>
[ Upstream commit 90d77b30a666049ad24df463f52e5d529c44e8cd ]

Starting with commit bdb249fce9ad4 ("ARM: integrator: read counter using
syscon/regmap"), intcp_init_early calls syscon_regmap_lookup_by_compatible
which in turn calls of_syscon_register. This function allocates memory.
Since the memory management code has not been initialized at that time,
the call always fails. It either returns -ENOMEM or crashes as follows.

Unable to handle kernel NULL pointer dereference at virtual address 0000000c when read
[0000000c] *pgd=00000000
Internal error: Oops: 5 [#1] ARM
Modules linked in:
CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.15.0-rc5-00026-g5fcc9bf84ee5 #1 PREEMPT
Hardware name: ARM Integrator/CP (Device Tree)
PC is at __kmalloc_cache_noprof+0xec/0x39c
LR is at __kmalloc_cache_noprof+0x34/0x39c
...
Call trace:
 __kmalloc_cache_noprof from of_syscon_register+0x7c/0x310
 of_syscon_register from device_node_get_regmap+0xa4/0xb0
 device_node_get_regmap from intcp_init_early+0xc/0x40
 intcp_init_early from start_kernel+0x60/0x688
 start_kernel from 0x0

The crash is seen due to a dereferenced pointer which is not supposed to be
NULL but is NULL if the memory management subsystem has not been
initialized. The crash is not seen with all versions of gcc. Some versions
such as gcc 9.x apparently do not dereference the pointer, presumably if
tracing is disabled. The problem has been reproduced with gcc 10.x, 11.x,
and 13.x. Either case, if the crash is not seen, the call to
syscon_regmap_lookup_by_compatible returns -ENOMEM, and
sched_clock_register is never called.

Fix the problem by moving the early initialization code into the standard
machine initialization code.

Fixes: bdb249fce9ad4 ("ARM: integrator: read counter using syscon/regmap")
Cc: Linus Walleij &lt;linus.walleij@linaro.org&gt;
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
Link: https://lore.kernel.org/20250518164118.3859567-1-linux@roeck-us.net
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
Link: https://lore.kernel.org/r/20260505-integrator-fixes-v1-1-56ab9aac59db@kernel.org
Signed-off-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 90d77b30a666049ad24df463f52e5d529c44e8cd ]

Starting with commit bdb249fce9ad4 ("ARM: integrator: read counter using
syscon/regmap"), intcp_init_early calls syscon_regmap_lookup_by_compatible
which in turn calls of_syscon_register. This function allocates memory.
Since the memory management code has not been initialized at that time,
the call always fails. It either returns -ENOMEM or crashes as follows.

Unable to handle kernel NULL pointer dereference at virtual address 0000000c when read
[0000000c] *pgd=00000000
Internal error: Oops: 5 [#1] ARM
Modules linked in:
CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.15.0-rc5-00026-g5fcc9bf84ee5 #1 PREEMPT
Hardware name: ARM Integrator/CP (Device Tree)
PC is at __kmalloc_cache_noprof+0xec/0x39c
LR is at __kmalloc_cache_noprof+0x34/0x39c
...
Call trace:
 __kmalloc_cache_noprof from of_syscon_register+0x7c/0x310
 of_syscon_register from device_node_get_regmap+0xa4/0xb0
 device_node_get_regmap from intcp_init_early+0xc/0x40
 intcp_init_early from start_kernel+0x60/0x688
 start_kernel from 0x0

The crash is seen due to a dereferenced pointer which is not supposed to be
NULL but is NULL if the memory management subsystem has not been
initialized. The crash is not seen with all versions of gcc. Some versions
such as gcc 9.x apparently do not dereference the pointer, presumably if
tracing is disabled. The problem has been reproduced with gcc 10.x, 11.x,
and 13.x. Either case, if the crash is not seen, the call to
syscon_regmap_lookup_by_compatible returns -ENOMEM, and
sched_clock_register is never called.

Fix the problem by moving the early initialization code into the standard
machine initialization code.

Fixes: bdb249fce9ad4 ("ARM: integrator: read counter using syscon/regmap")
Cc: Linus Walleij &lt;linus.walleij@linaro.org&gt;
Signed-off-by: Guenter Roeck &lt;linux@roeck-us.net&gt;
Link: https://lore.kernel.org/20250518164118.3859567-1-linux@roeck-us.net
Signed-off-by: Linus Walleij &lt;linus.walleij@linaro.org&gt;
Link: https://lore.kernel.org/r/20260505-integrator-fixes-v1-1-56ab9aac59db@kernel.org
Signed-off-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>LoongArch: Remove unused code to avoid build warning</title>
<updated>2026-06-01T15:39:36+00:00</updated>
<author>
<name>Huacai Chen</name>
<email>chenhuacai@loongson.cn</email>
</author>
<published>2026-05-21T12:58:40+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=e12b69efdad2097e4adb680d3cb20edfffb10d39'/>
<id>e12b69efdad2097e4adb680d3cb20edfffb10d39</id>
<content type='text'>
commit 0ccc9d47cf020994097ff51827cebd04aa2b0bf4 upstream.

After commit feee6b2989165631b1 ("mm/memory_hotplug: shrink zones when
offlining memory"), __remove_pages() doesn't need the "zone" parameter
so the "page" variable is also unused. Remove the unused code to avoid
such build warning:

arch/loongarch/mm/init.c: In function 'arch_remove_memory':
arch/loongarch/mm/init.c:134:22: warning: variable 'page' set but not used [-Wunused-but-set-variable=]
  134 |         struct page *page = pfn_to_page(start_pfn);

Cc: &lt;stable@vger.kernel.org&gt;
Reviewed-by: Guo Ren &lt;guoren@kernel.org&gt;
Signed-off-by: Huacai Chen &lt;chenhuacai@loongson.cn&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 0ccc9d47cf020994097ff51827cebd04aa2b0bf4 upstream.

After commit feee6b2989165631b1 ("mm/memory_hotplug: shrink zones when
offlining memory"), __remove_pages() doesn't need the "zone" parameter
so the "page" variable is also unused. Remove the unused code to avoid
such build warning:

arch/loongarch/mm/init.c: In function 'arch_remove_memory':
arch/loongarch/mm/init.c:134:22: warning: variable 'page' set but not used [-Wunused-but-set-variable=]
  134 |         struct page *page = pfn_to_page(start_pfn);

Cc: &lt;stable@vger.kernel.org&gt;
Reviewed-by: Guo Ren &lt;guoren@kernel.org&gt;
Signed-off-by: Huacai Chen &lt;chenhuacai@loongson.cn&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits</title>
<updated>2026-06-01T15:39:36+00:00</updated>
<author>
<name>Michael Bommarito</name>
<email>michael.bommarito@gmail.com</email>
</author>
<published>2026-05-19T13:25:19+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=1716b7fea2ead941a0dfac06c4504a3437cdf00d'/>
<id>1716b7fea2ead941a0dfac06c4504a3437cdf00d</id>
<content type='text'>
commit 9ce754ed8e7ab4e3999767ce1505f85c449ccb07 upstream.

Userspace can restore an ITS Device Table Entry whose Size field encodes
more EventID bits than the virtual ITS supports.  The live MAPD path
rejects that state, but vgic_its_restore_dte() accepts it and stores the
out-of-range value in dev-&gt;num_eventid_bits.

Reject restored DTEs with num_eventid_bits &gt; VITS_TYPER_IDBITS before
allocating the device.  This mirrors the MAPD check and prevents the
restored state from reaching vgic_its_restore_itt(), where the unchecked
value can be converted into an oversized scan_its_table() range.

Fixes: 57a9a117154c ("KVM: arm64: vgic-its: Device table save/restore")
Assisted-by: Claude:claude-opus-4-7
Signed-off-by: Michael Bommarito &lt;michael.bommarito@gmail.com&gt;
Link: https://lore.kernel.org/r/20260519132519.2142458-1-michael.bommarito@gmail.com
Signed-off-by: Marc Zyngier &lt;maz@kernel.org&gt;
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 9ce754ed8e7ab4e3999767ce1505f85c449ccb07 upstream.

Userspace can restore an ITS Device Table Entry whose Size field encodes
more EventID bits than the virtual ITS supports.  The live MAPD path
rejects that state, but vgic_its_restore_dte() accepts it and stores the
out-of-range value in dev-&gt;num_eventid_bits.

Reject restored DTEs with num_eventid_bits &gt; VITS_TYPER_IDBITS before
allocating the device.  This mirrors the MAPD check and prevents the
restored state from reaching vgic_its_restore_itt(), where the unchecked
value can be converted into an oversized scan_its_table() range.

Fixes: 57a9a117154c ("KVM: arm64: vgic-its: Device table save/restore")
Assisted-by: Claude:claude-opus-4-7
Signed-off-by: Michael Bommarito &lt;michael.bommarito@gmail.com&gt;
Link: https://lore.kernel.org/r/20260519132519.2142458-1-michael.bommarito@gmail.com
Signed-off-by: Marc Zyngier &lt;maz@kernel.org&gt;
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Revert "x86/vdso: Fix output operand size of RDPID"</title>
<updated>2026-06-01T15:39:34+00:00</updated>
<author>
<name>Sasha Levin</name>
<email>sashal@kernel.org</email>
</author>
<published>2026-05-26T00:46:05+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=cfdc4e3acc7d0b55bd2b5386c2ec98069bc13b13'/>
<id>cfdc4e3acc7d0b55bd2b5386c2ec98069bc13b13</id>
<content type='text'>
This reverts commit 757a9e78a1c5b824d0a2b7de14c3cd8d841dfbee.

Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This reverts commit 757a9e78a1c5b824d0a2b7de14c3cd8d841dfbee.

Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>s390/debug: Reject zero-length input before trimming a newline</title>
<updated>2026-06-01T15:39:33+00:00</updated>
<author>
<name>Pengpeng Hou</name>
<email>pengpeng@iscas.ac.cn</email>
</author>
<published>2026-05-21T02:28:39+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=a445a4717bcd4810b25ea92b15ff67cba0255b8a'/>
<id>a445a4717bcd4810b25ea92b15ff67cba0255b8a</id>
<content type='text'>
[ Upstream commit c366a7b5ed7564e41345c380285bd3f6cb98971b ]

debug_get_user_string() copies the userspace buffer into a newly
allocated NUL-terminated buffer and then unconditionally looks at
buffer[user_len - 1] to strip a trailing newline.

A zero-length write reaches this helper unchanged, so the newline trim
reads before the start of the allocated buffer.

Reject empty writes before accessing the last input byte.

Fixes: 66a464dbc8e0 ("[PATCH] s390: debug feature changes")
Cc: stable@vger.kernel.org
Signed-off-by: Pengpeng Hou &lt;pengpeng@iscas.ac.cn&gt;
Reviewed-by: Benjamin Block &lt;bblock@linux.ibm.com&gt;
Reviewed-by: Vasily Gorbik &lt;gor@linux.ibm.com&gt;
Tested-by: Vasily Gorbik &lt;gor@linux.ibm.com&gt;
Link: https://lore.kernel.org/r/20260417073530.96002-1-pengpeng@iscas.ac.cn
Signed-off-by: Vasily Gorbik &lt;gor@linux.ibm.com&gt;
Signed-off-by: Alexander Gordeev &lt;agordeev@linux.ibm.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit c366a7b5ed7564e41345c380285bd3f6cb98971b ]

debug_get_user_string() copies the userspace buffer into a newly
allocated NUL-terminated buffer and then unconditionally looks at
buffer[user_len - 1] to strip a trailing newline.

A zero-length write reaches this helper unchanged, so the newline trim
reads before the start of the allocated buffer.

Reject empty writes before accessing the last input byte.

Fixes: 66a464dbc8e0 ("[PATCH] s390: debug feature changes")
Cc: stable@vger.kernel.org
Signed-off-by: Pengpeng Hou &lt;pengpeng@iscas.ac.cn&gt;
Reviewed-by: Benjamin Block &lt;bblock@linux.ibm.com&gt;
Reviewed-by: Vasily Gorbik &lt;gor@linux.ibm.com&gt;
Tested-by: Vasily Gorbik &lt;gor@linux.ibm.com&gt;
Link: https://lore.kernel.org/r/20260417073530.96002-1-pengpeng@iscas.ac.cn
Signed-off-by: Vasily Gorbik &lt;gor@linux.ibm.com&gt;
Signed-off-by: Alexander Gordeev &lt;agordeev@linux.ibm.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>powerpc/warp: Fix error handling in pika_dtm_thread</title>
<updated>2026-06-01T15:39:32+00:00</updated>
<author>
<name>Ma Ke</name>
<email>make24@iscas.ac.cn</email>
</author>
<published>2025-11-16T02:44:11+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=c16516ec8195fe7da1129c5887fb8a36a793ffe0'/>
<id>c16516ec8195fe7da1129c5887fb8a36a793ffe0</id>
<content type='text'>
commit 108d7f951271cbd36ca36efc5e5d106966f5180c upstream.

pika_dtm_thread() acquires client through of_find_i2c_device_by_node()
but fails to release it in error handling path. This could result in a
reference count leak, preventing proper cleanup and potentially
leading to resource exhaustion. Add put_device() to release the
reference in the error handling path.

Found by code review.

Cc: stable@vger.kernel.org
Fixes: 3984114f0562 ("powerpc/warp: Platform fix for i2c change")
Signed-off-by: Ma Ke &lt;make24@iscas.ac.cn&gt;
Reviewed-by: Christophe Leroy &lt;christophe.leroy@csgroup.eu&gt;
Signed-off-by: Madhavan Srinivasan &lt;maddy@linux.ibm.com&gt;
Link: https://patch.msgid.link/20251116024411.21968-1-make24@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 108d7f951271cbd36ca36efc5e5d106966f5180c upstream.

pika_dtm_thread() acquires client through of_find_i2c_device_by_node()
but fails to release it in error handling path. This could result in a
reference count leak, preventing proper cleanup and potentially
leading to resource exhaustion. Add put_device() to release the
reference in the error handling path.

Found by code review.

Cc: stable@vger.kernel.org
Fixes: 3984114f0562 ("powerpc/warp: Platform fix for i2c change")
Signed-off-by: Ma Ke &lt;make24@iscas.ac.cn&gt;
Reviewed-by: Christophe Leroy &lt;christophe.leroy@csgroup.eu&gt;
Signed-off-by: Madhavan Srinivasan &lt;maddy@linux.ibm.com&gt;
Link: https://patch.msgid.link/20251116024411.21968-1-make24@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>KVM: x86: Fix Xen hypercall tracepoint argument assignment</title>
<updated>2026-06-01T15:39:32+00:00</updated>
<author>
<name>Qiang Ma</name>
<email>maqianga@uniontech.com</email>
</author>
<published>2026-05-12T01:53:13+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=9dd2fe4b270490979532fa04f70ee7d3f021b6eb'/>
<id>9dd2fe4b270490979532fa04f70ee7d3f021b6eb</id>
<content type='text'>
commit 2b72f1674e427c56e3772c5ccf785fdda2138820 upstream.

TRACE_EVENT(kvm_xen_hypercall) stores a5 in __entry-&gt;a4 instead of
__entry-&gt;a5.

That overwrites the recorded a4 argument and leaves a5 unset in the
trace entry. Fix the typo so both arguments are captured correctly.

Signed-off-by: Qiang Ma &lt;maqianga@uniontech.com&gt;
Link: https://patch.msgid.link/20260512015313.1685784-1-maqianga@uniontech.com/
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini &lt;pbonzini@redhat.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 2b72f1674e427c56e3772c5ccf785fdda2138820 upstream.

TRACE_EVENT(kvm_xen_hypercall) stores a5 in __entry-&gt;a4 instead of
__entry-&gt;a5.

That overwrites the recorded a4 argument and leaves a5 unset in the
trace entry. Fix the typo so both arguments are captured correctly.

Signed-off-by: Qiang Ma &lt;maqianga@uniontech.com&gt;
Link: https://patch.msgid.link/20260512015313.1685784-1-maqianga@uniontech.com/
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini &lt;pbonzini@redhat.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic</title>
<updated>2026-06-01T15:39:32+00:00</updated>
<author>
<name>Junrui Luo</name>
<email>moonafterrain@outlook.com</email>
</author>
<published>2026-04-15T09:26:55+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=31a9d9f9942885aae356a1a57c79e82c5b5b0828'/>
<id>31a9d9f9942885aae356a1a57c79e82c5b5b0828</id>
<content type='text'>
commit 16d990a15491cf76cd6eef0846e1b4100e63261a upstream.

kvm_s390_pci_aif_enable(), kvm_s390_pci_aif_disable(), and
aen_host_forward() index the GAIT by manually multiplying the index
with sizeof(struct zpci_gaite).

Since aift-&gt;gait is already a struct zpci_gaite pointer, this
double-scales the offset, accessing element aisb*16 instead of aisb.

This causes out-of-bounds accesses when aisb &gt;= 32 (with
ZPCI_NR_DEVICES=512)

Fix by removing the erroneous sizeof multiplication.

Fixes: 3c5a1b6f0a18 ("KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding")
Fixes: 73f91b004321 ("KVM: s390: pci: enable host forwarding of Adapter Event Notifications")
Reported-by: Yuhao Jiang &lt;danisjiang@gmail.com&gt;
Cc: stable@vger.kernel.org
Signed-off-by: Junrui Luo &lt;moonafterrain@outlook.com&gt;
Reviewed-by: Christian Borntraeger &lt;borntraeger@linux.ibm.com&gt;
Reviewed-by: Matthew Rosato &lt;mjrosato@linux.ibm.com&gt;
Tested-by: Matthew Rosato &lt;mjrosato@linux.ibm.com&gt;
Signed-off-by: Christian Borntraeger &lt;borntraeger@linux.ibm.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 16d990a15491cf76cd6eef0846e1b4100e63261a upstream.

kvm_s390_pci_aif_enable(), kvm_s390_pci_aif_disable(), and
aen_host_forward() index the GAIT by manually multiplying the index
with sizeof(struct zpci_gaite).

Since aift-&gt;gait is already a struct zpci_gaite pointer, this
double-scales the offset, accessing element aisb*16 instead of aisb.

This causes out-of-bounds accesses when aisb &gt;= 32 (with
ZPCI_NR_DEVICES=512)

Fix by removing the erroneous sizeof multiplication.

Fixes: 3c5a1b6f0a18 ("KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding")
Fixes: 73f91b004321 ("KVM: s390: pci: enable host forwarding of Adapter Event Notifications")
Reported-by: Yuhao Jiang &lt;danisjiang@gmail.com&gt;
Cc: stable@vger.kernel.org
Signed-off-by: Junrui Luo &lt;moonafterrain@outlook.com&gt;
Reviewed-by: Christian Borntraeger &lt;borntraeger@linux.ibm.com&gt;
Reviewed-by: Matthew Rosato &lt;mjrosato@linux.ibm.com&gt;
Tested-by: Matthew Rosato &lt;mjrosato@linux.ibm.com&gt;
Signed-off-by: Christian Borntraeger &lt;borntraeger@linux.ibm.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>arm64: dts: meson-gxl-p230: fix ethernet PHY interrupt number</title>
<updated>2026-06-01T15:39:25+00:00</updated>
<author>
<name>Jun Yan</name>
<email>jerrysteve1101@gmail.com</email>
</author>
<published>2026-03-30T14:51:11+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=5a5d15b7c85d228f3ad55c586fd974b404ed7a8f'/>
<id>5a5d15b7c85d228f3ad55c586fd974b404ed7a8f</id>
<content type='text'>
[ Upstream commit 174a0ef3b33434f475c87e66f37980e39b73805a ]

Correct the interrupt number assigned to the Realtek PHY in the p230

following the same logic as commit 3106507e1004 ("ARM64: dts: meson-gxm:
fix q200 interrupt number"),as reported in [PATCH 0/2] Ethernet PHY
interrupt improvements [1].

[1] https://lore.kernel.org/all/20171202214037.17017-1-martin.blumenstingl@googlemail.com/

Fixes: b94d22d94ad2 ("ARM64: dts: meson-gx: add external PHY interrupt on some platforms")
Signed-off-by: Jun Yan &lt;jerrysteve1101@gmail.com&gt;
Reviewed-by: Martin Blumenstingl &lt;martin.blumenstingl@googlemail.com&gt;
Link: https://patch.msgid.link/20260330145111.115318-1-jerrysteve1101@gmail.com
Signed-off-by: Neil Armstrong &lt;neil.armstrong@linaro.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 174a0ef3b33434f475c87e66f37980e39b73805a ]

Correct the interrupt number assigned to the Realtek PHY in the p230

following the same logic as commit 3106507e1004 ("ARM64: dts: meson-gxm:
fix q200 interrupt number"),as reported in [PATCH 0/2] Ethernet PHY
interrupt improvements [1].

[1] https://lore.kernel.org/all/20171202214037.17017-1-martin.blumenstingl@googlemail.com/

Fixes: b94d22d94ad2 ("ARM64: dts: meson-gx: add external PHY interrupt on some platforms")
Signed-off-by: Jun Yan &lt;jerrysteve1101@gmail.com&gt;
Reviewed-by: Martin Blumenstingl &lt;martin.blumenstingl@googlemail.com&gt;
Link: https://patch.msgid.link/20260330145111.115318-1-jerrysteve1101@gmail.com
Signed-off-by: Neil Armstrong &lt;neil.armstrong@linaro.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
</feed>
