From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 32C65226183 for ; Thu, 27 Feb 2025 20:01:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740686484; cv=none; b=jhr0MPlHxeIoxTuT7EYCdLK1J4WTJbX6d7Z78lEsyTKXVDyJvqwgZxFTAloMs6misILlOfzizUIgPbF+gLFvc7XhH3Fd1RGtZXXy466nwVu4asvsZCTlou2qSj0apNtEBaK6cqH3dTIbERVx2kj7Mjs54Gcw2ZW72DQiQ6v7/jw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740686484; c=relaxed/simple; bh=i0edgHo0wtN+2Ysv6yjPtV3PZ+L9NkhtO31LpAXiW+0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ZIJyBNQJ2z8EFXvULZW3/+w2JFXarx0saPuSgFGN2nnsuFXwJgpfTho8bfcY7cC/Fmt+FhpgV/hbVs3N1i9M0kSWRiCLFV1bwrWf3lJ7KasK1n86lpA2yFkoEs0LN4QbXndFGNeY4YZs+DTPZ/oU7pyEIKNNhOBfap6dXrdjlxI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Z0fpSV85; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Z0fpSV85" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 91123C4CEDD; Thu, 27 Feb 2025 20:01:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1740686483; bh=i0edgHo0wtN+2Ysv6yjPtV3PZ+L9NkhtO31LpAXiW+0=; h=From:To:Cc:Subject:Date:Reply-to:From; b=Z0fpSV85DnosxnrsLC0ApoyQHUZ9RVgiE5ofls3khjX4ROWFLB0kC3z/TmeoQ9iro DdYaN2RophMXhZvytKRZEtpNJP205bMbJj7TMn2K/bSi94PjlpNoUyZ0nj72rHy3Zg yE2RHnFLdeZ/Zs/BN1tMIda+A0yyMNIx6PcTqqHg= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2025-21803: LoongArch: Fix warnings during S3 suspend Date: Thu, 27 Feb 2025 11:59:57 -0800 Message-ID: <2025022752-CVE-2025-21803-e8ea@gregkh> X-Mailer: git-send-email 2.48.1 Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Reply-to: , X-Developer-Signature: v=1; a=openpgp-sha256; l=4508; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=i0edgHo0wtN+2Ysv6yjPtV3PZ+L9NkhtO31LpAXiW+0=; b=owGbwMvMwCRo6H6F97bub03G02pJDOkHjlic6/Zcu/lWy//rzDnbPryacs7i+uoDnaZTZH4q3 nRL6f+R1RHLwiDIxCArpsjyZRvP0f0VhxS9DG1Pw8xhZQIZwsDFKQAT4T3JML/ildfTjDXmlgHi vs8fKU8vkXp6ypxhwZbzjqmhf5g1AntUS7dyv9E2j2kUBAA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit Description =========== In the Linux kernel, the following vulnerability has been resolved: LoongArch: Fix warnings during S3 suspend The enable_gpe_wakeup() function calls acpi_enable_all_wakeup_gpes(), and the later one may call the preempt_schedule_common() function, resulting in a thread switch and causing the CPU to be in an interrupt enabled state after the enable_gpe_wakeup() function returns, leading to the warnings as follow. [ C0] WARNING: ... at kernel/time/timekeeping.c:845 ktime_get+0xbc/0xc8 [ C0] ... [ C0] Call Trace: [ C0] [<90000000002243b4>] show_stack+0x64/0x188 [ C0] [<900000000164673c>] dump_stack_lvl+0x60/0x88 [ C0] [<90000000002687e4>] __warn+0x8c/0x148 [ C0] [<90000000015e9978>] report_bug+0x1c0/0x2b0 [ C0] [<90000000016478e4>] do_bp+0x204/0x3b8 [ C0] [<90000000025b1924>] exception_handlers+0x1924/0x10000 [ C0] [<9000000000343bbc>] ktime_get+0xbc/0xc8 [ C0] [<9000000000354c08>] tick_sched_timer+0x30/0xb0 [ C0] [<90000000003408e0>] __hrtimer_run_queues+0x160/0x378 [ C0] [<9000000000341f14>] hrtimer_interrupt+0x144/0x388 [ C0] [<9000000000228348>] constant_timer_interrupt+0x38/0x48 [ C0] [<90000000002feba4>] __handle_irq_event_percpu+0x64/0x1e8 [ C0] [<90000000002fed48>] handle_irq_event_percpu+0x20/0x80 [ C0] [<9000000000306b9c>] handle_percpu_irq+0x5c/0x98 [ C0] [<90000000002fd4a0>] generic_handle_domain_irq+0x30/0x48 [ C0] [<9000000000d0c7b0>] handle_cpu_irq+0x70/0xa8 [ C0] [<9000000001646b30>] handle_loongarch_irq+0x30/0x48 [ C0] [<9000000001646bc8>] do_vint+0x80/0xe0 [ C0] [<90000000002aea1c>] finish_task_switch.isra.0+0x8c/0x2a8 [ C0] [<900000000164e34c>] __schedule+0x314/0xa48 [ C0] [<900000000164ead8>] schedule+0x58/0xf0 [ C0] [<9000000000294a2c>] worker_thread+0x224/0x498 [ C0] [<900000000029d2f0>] kthread+0xf8/0x108 [ C0] [<9000000000221f28>] ret_from_kernel_thread+0xc/0xa4 [ C0] [ C0] ---[ end trace 0000000000000000 ]--- The root cause is acpi_enable_all_wakeup_gpes() uses a mutex to protect acpi_hw_enable_all_wakeup_gpes(), and acpi_ut_acquire_mutex() may cause a thread switch. Since there is no longer concurrent execution during loongarch_acpi_suspend(), we can call acpi_hw_enable_all_wakeup_gpes() directly in enable_gpe_wakeup(). The solution is similar to commit 22db06337f590d01 ("ACPI: sleep: Avoid breaking S3 wakeup due to might_sleep()"). The Linux kernel CVE team has assigned CVE-2025-21803 to this issue. Affected and fixed versions =========================== Issue introduced in 6.2 with commit 366bb35a8e48198cefcd3484ac6b2374d1347873 and fixed in 6.6.76 with commit d49ab6857d98266010f3446c9c2063014db5b654 Issue introduced in 6.2 with commit 366bb35a8e48198cefcd3484ac6b2374d1347873 and fixed in 6.12.13 with commit 194d26a5a43c26dc98a9b4e2c1d521dcb84dd1bf Issue introduced in 6.2 with commit 366bb35a8e48198cefcd3484ac6b2374d1347873 and fixed in 6.13.2 with commit 8682a71a7f6de7c683f31b4334b04e19685a05f9 Issue introduced in 6.2 with commit 366bb35a8e48198cefcd3484ac6b2374d1347873 and fixed in 6.14-rc1 with commit 26c0a2d93af55d30a46d5f45d3e9c42cde730168 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2025-21803 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: arch/loongarch/power/platform.c drivers/acpi/acpica/achware.h include/acpi/acpixf.h Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/d49ab6857d98266010f3446c9c2063014db5b654 https://git.kernel.org/stable/c/194d26a5a43c26dc98a9b4e2c1d521dcb84dd1bf https://git.kernel.org/stable/c/8682a71a7f6de7c683f31b4334b04e19685a05f9 https://git.kernel.org/stable/c/26c0a2d93af55d30a46d5f45d3e9c42cde730168