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Wed, 1 May 2024 23:25:08 GMT Received: from brm-x62-16.us.oracle.com (brm-x62-16.us.oracle.com [10.80.150.37]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3xrqt9vbuq-3; Wed, 01 May 2024 23:25:08 +0000 From: Jane Chu To: linmiaohe@huawei.com, nao.horiguchi@gmail.com, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/3] mm/madvise: Add MF_ACTION_REQUIRED to madvise(MADV_HWPOISON) Date: Wed, 1 May 2024 17:24:57 -0600 Message-Id: <20240501232458.3919593-3-jane.chu@oracle.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20240501232458.3919593-1-jane.chu@oracle.com> References: <20240501232458.3919593-1-jane.chu@oracle.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1011,Hydra:6.0.650,FMLib:17.11.176.26 definitions=2024-05-01_16,2024-04-30_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 phishscore=0 bulkscore=0 suspectscore=0 malwarescore=0 spamscore=0 adultscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2404010000 definitions=main-2405010165 X-Proofpoint-GUID: xYRc7ttZpJPOgWhFHPkn8aug1OV-_T7v X-Proofpoint-ORIG-GUID: xYRc7ttZpJPOgWhFHPkn8aug1OV-_T7v X-Rspamd-Queue-Id: 0E07940004 X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: hokysruuragemsws5y4jjkncb7xshy5d X-HE-Tag: 1714606037-808134 X-HE-Meta: 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 gaFJEeCe n6e4bobKz0R+JyPOaPzMsF0ff8xr7HsLSfizG2jwJMk4/CLorq8ixwQBDontbNWyXVmosm97CAwpskCCQCBzmkkSzXjcqy+BbtNfMBrGJobubOd5X7JS+J+8yDbaX9mN0yJLNcpCrKbYulmyceF7D31HA8BAhr7u8JfO6obrdpudCKOZJIzC++QotwyXr/hyzryfjFOOIeoHq0G+lQzd2mG1w1phE/vbfjlDmDKdZ0pRcVPYDupi3nJO5e0dmbt0NkPiG/6XVpHZ3khYIg1FsrERa0U4CWN5kfpxecaX35wJ/fQA8+d2u6msKxxmoeGL+nNN829AyfGTBlgs= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: The soft hwpoison injector via madvise(MADV_HWPOISON) operates in a synchrous way in a sense, the injector is also a process under test, and should it have the poisoned page mapped in its address space, it should legitimately get killed as much as in a real UE situation. Signed-off-by: Jane Chu --- mm/madvise.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/madvise.c b/mm/madvise.c index 1a073fcc4c0c..eaeae5252c02 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -1127,7 +1127,7 @@ static int madvise_inject_error(int behavior, } else { pr_info("Injecting memory failure for pfn %#lx at process virtual address %#lx\n", pfn, start); - ret = memory_failure(pfn, MF_COUNT_INCREASED | MF_SW_SIMULATED); + ret = memory_failure(pfn, MF_ACTION_REQUIRED | MF_COUNT_INCREASED | MF_SW_SIMULATED); if (ret == -EOPNOTSUPP) ret = 0; }