From: sashiko-bot@kernel.org
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Cc: kexec@lists.infradead.org
Subject: Re: [PATCH v5 03/17] kexec: Extract kexec_free_segment_cma() from kimage_free_cma()
Date: Fri, 18 Sep 2026 10:18:49 +0000 [thread overview]
Message-ID: <20260918101850.7E1441F000FF@smtp.kernel.org> (raw)
In-Reply-To: <20260918100442.3841135-4-ruanjinjie@huawei.com>
> kimage_free_cma() relies on image->nr_segments to iterate over segments.
> When an architecture loader (e.g., arm64) truncates nr_segments on a
> mid-way failure, CMA pages allocated beyond the new boundary become
> unreachable, causing silent memory leaks.
>
> Extract the per-segment freeing logic into the exported helper
> kexec_free_segment_cma(), so that architecture loaders can release
> individual segments before nr_segments is truncated. Refactor
> kimage_free_cma() to loop over the new helper, preserving existing
> behavior.
>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Baoquan He <baoquan.he@linux.dev>
> Cc: Mike Rapoport <rppt@kernel.org>
> Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
> Cc: Pratyush Yadav <pratyush@kernel.org>
> Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260918100442.3841135-1-ruanjinjie@huawei.com?part=3
WARNING: multiple messages have this Message-ID (diff)
From: sashiko-bot@kernel.org
To: x86@kernel.org, me@linux.beauty, vishal.l.verma@intel.com,
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Cc: kexec@lists.infradead.org
Subject: Re: [PATCH v5 03/17] kexec: Extract kexec_free_segment_cma() from kimage_free_cma()
Date: Fri, 18 Sep 2026 10:18:49 +0000 [thread overview]
Message-ID: <20260918101850.7E1441F000FF@smtp.kernel.org> (raw)
In-Reply-To: <20260918100442.3841135-4-ruanjinjie@huawei.com>
> kimage_free_cma() relies on image->nr_segments to iterate over segments.
> When an architecture loader (e.g., arm64) truncates nr_segments on a
> mid-way failure, CMA pages allocated beyond the new boundary become
> unreachable, causing silent memory leaks.
>
> Extract the per-segment freeing logic into the exported helper
> kexec_free_segment_cma(), so that architecture loaders can release
> individual segments before nr_segments is truncated. Refactor
> kimage_free_cma() to loop over the new helper, preserving existing
> behavior.
>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Baoquan He <baoquan.he@linux.dev>
> Cc: Mike Rapoport <rppt@kernel.org>
> Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
> Cc: Pratyush Yadav <pratyush@kernel.org>
> Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260918100442.3841135-1-ruanjinjie@huawei.com?part=3
WARNING: multiple messages have this Message-ID (diff)
From: sashiko-bot@kernel.org
To: x86@kernel.org, me@linux.beauty, vishal.l.verma@intel.com,
npiggin@gmail.com, sourabhjain@linux.ibm.com,
lizhengyu3@huawei.com, dakr@kernel.org, blum@kernel.org,
linux-mm@kvack.org, dave.hansen@linux.intel.com,
eric.devolder@oracle.com, adityag@linux.ibm.com,
akpm@linux-foundation.org, will@kernel.org,
takahiro.akashi@linaro.org, bgwin@google.com,
catalin.marinas@arm.com, coxu@redhat.com,
zhangtianyang@loongson.cn, driver-core@lists.linux.dev,
kernel@xen0n.name, kees@kernel.org, hpa@zytor.com,
kas@kernel.org, seanjc@google.com, linux-kernel@vger.kernel.org,
mingo@redhat.com, ritesh.list@gmail.com, sshegde@linux.ibm.com,
ruirui.yang@linux.dev, jbouron@amazon.com, leitao@debian.org,
tglx@kernel.org, chenhuacai@kernel.org, hbathini@linux.ibm.com,
james.morse@arm.com, mclapinski@google.com, palmer@rivosinc.com,
ruanjinjie@huawei.com, linux-arm-kernel@lists.infradead.org,
robh@kernel.org, linux-fsdevel@vger.kernel.org,
maqianga@uniontech.com, gshan@redhat.com, chleroy@kernel.org,
liuk@lists.ozlabs.org, exin@kylinos.cn,
"Jinjie Ruan" <ruanjinjie@huawei.com>,
mpe@ellerman.id.au, pratyush@kernel.org, ardb@kernel.org,
piliu@redhat.com, maddy@linux.ibm.com, yeoreum.yun@arm.com,
loongarch@lists.linux.dev, baoquan.he@linux.dev,
mark.rutland@arm.com, rppt@kernel.org,
linuxppc-dev@lists.ozlabs.org, gregkh@linuxfoundation.org,
rafael@kernel.org, chao.gao@intel.com, graf@amazon.com,
thuth@redhat.com, guodongtai@kylinos.cn, bp@alien8.de,
pasha.tatashin@soleen.com, tangyouling@kylinos.cn
Cc: kexec@lists.infradead.org
Subject: Re: [PATCH v5 03/17] kexec: Extract kexec_free_segment_cma() from kimage_free_cma()
Date: Fri, 18 Sep 2026 10:18:49 +0000 [thread overview]
Message-ID: <20260918101850.7E1441F000FF@smtp.kernel.org> (raw)
In-Reply-To: <20260918100442.3841135-4-ruanjinjie@huawei.com>
> kimage_free_cma() relies on image->nr_segments to iterate over segments.
> When an architecture loader (e.g., arm64) truncates nr_segments on a
> mid-way failure, CMA pages allocated beyond the new boundary become
> unreachable, causing silent memory leaks.
>
> Extract the per-segment freeing logic into the exported helper
> kexec_free_segment_cma(), so that architecture loaders can release
> individual segments before nr_segments is truncated. Refactor
> kimage_free_cma() to loop over the new helper, preserving existing
> behavior.
>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Baoquan He <baoquan.he@linux.dev>
> Cc: Mike Rapoport <rppt@kernel.org>
> Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
> Cc: Pratyush Yadav <pratyush@kernel.org>
> Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260918100442.3841135-1-ruanjinjie@huawei.com?part=3
next prev parent reply other threads:[~2026-09-18 10:18 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-18 10:04 [PATCH v5 00/17] crash: Rework and add arm64 crash hotplug support Jinjie Ruan
2026-09-18 10:04 ` [PATCH v5 01/17] kexec: Fix CMA segment address translation with non-zero text_offset Jinjie Ruan
2026-09-18 10:22 ` sashiko-bot
2026-09-18 10:22 ` sashiko-bot
2026-09-18 10:22 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 02/17] kexec: Record allocated CMA pages to fix release size mismatch Jinjie Ruan
2026-09-18 10:16 ` sashiko-bot
2026-09-18 10:16 ` sashiko-bot
2026-09-18 10:16 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 03/17] kexec: Extract kexec_free_segment_cma() from kimage_free_cma() Jinjie Ruan
2026-09-18 10:18 ` sashiko-bot [this message]
2026-09-18 10:18 ` sashiko-bot
2026-09-18 10:18 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 04/17] arm64: kexec_file: Fix CMA page leaks in segment placement retry loops Jinjie Ruan
2026-09-18 10:15 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 05/17] arm64: kexec_file: Fix elf_headers memory leak in retry loop Jinjie Ruan
2026-09-18 10:16 ` sashiko-bot
2026-09-18 10:16 ` sashiko-bot
2026-09-18 10:16 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 06/17] LoongArch: kexec_file: Fix CMA page leaks in segment placement retry loops Jinjie Ruan
2026-09-18 10:16 ` sashiko-bot
2026-09-18 10:16 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 07/17] LoongArch: kexec_file: Fix elf_headers memory leak in retry loop Jinjie Ruan
2026-09-18 10:21 ` sashiko-bot
2026-09-18 10:21 ` sashiko-bot
2026-09-18 10:21 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 08/17] LoongArch: kexec_file: Fix a modified_cmdline leak Jinjie Ruan
2026-09-18 10:18 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 09/17] x86/crash: Fix massive out-of-bounds write on 32-bit Highmem Jinjie Ruan
2026-09-18 10:16 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 10/17] crash: Extract crash_get_memory_ranges() helper Jinjie Ruan
2026-09-18 10:11 ` sashiko-bot
2026-09-18 10:11 ` sashiko-bot
2026-09-18 10:11 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 11/17] crash: Normalize the kexec_load elfcorehdr at load time Jinjie Ruan
2026-09-18 10:27 ` sashiko-bot
2026-09-18 10:27 ` sashiko-bot
2026-09-18 10:27 ` sashiko-bot
2026-09-20 3:52 ` Jinjie Ruan
2026-09-18 10:04 ` [PATCH v5 12/17] crash: Fix TOCTOU race in crash memory range collection Jinjie Ruan
2026-09-18 10:34 ` sashiko-bot
2026-09-18 10:34 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 13/17] crash: Assert device_hotplug_lock in crash_get_memory_ranges_nolock() Jinjie Ruan
2026-09-18 10:26 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 14/17] elf: Introduce elf64_phdr_size() helper Jinjie Ruan
2026-09-18 10:25 ` sashiko-bot
2026-09-18 10:25 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 15/17] crash: Introduce crash_extra_elfcorehdr_size() helper Jinjie Ruan
2026-09-18 10:31 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 16/17] arm64: kexec_file: Simplify load_other_segments() Jinjie Ruan
2026-09-18 10:27 ` sashiko-bot
2026-09-18 10:27 ` sashiko-bot
2026-09-18 10:27 ` sashiko-bot
2026-09-18 10:04 ` [PATCH v5 17/17] arm64: crash: Add crash hotplug support Jinjie Ruan
2026-09-18 10:36 ` sashiko-bot
2026-09-20 3:53 ` Jinjie Ruan
2026-09-18 10:41 ` [PATCH v5 00/17] crash: Rework and add arm64 " Breno Leitao
2026-09-20 3:13 ` Jinjie Ruan
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