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Wed, 15 Jul 2020 05:27:04 +0000 Received: from DM6PR11MB2635.namprd11.prod.outlook.com ([fe80::74cd:7ab:7255:2e90]) by DM6PR11MB2635.namprd11.prod.outlook.com ([fe80::74cd:7ab:7255:2e90%3]) with mapi id 15.20.3174.026; Wed, 15 Jul 2020 05:27:04 +0000 From: "Zhang, Qiang" To: Tuong Tong Lien , Eric Dumazet , "jmaloy@redhat.com" , "davem@davemloft.net" , "kuba@kernel.org" , "Xue, Ying" CC: "netdev@vger.kernel.org" , "tipc-discussion@lists.sourceforge.net" , "linux-kernel@vger.kernel.org" Subject: =?eucgb2312_cn?b?u9i4tDogW1BBVENIIHYyXSB0aXBjOiBEb24ndCB1c2luZyBzbXBfcHJv?= =?eucgb2312_cn?b?Y2Vzc29yX2lkKCkgaW4gcHJlZW1wdGlibGUgY29kZQ==?= Thread-Topic: [PATCH v2] tipc: Don't using smp_processor_id() in preemptible code Thread-Index: AQHWWbRfIzSLUoSFxESt6m2E0WcCo6kHHx8AgADHpzaAABzhgIAAFzS7 Date: Wed, 15 Jul 2020 05:27:04 +0000 Message-ID: References: <20200714080559.9617-1-qiang.zhang@windriver.com>, , In-Reply-To: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dektech.com.au; 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} else { - head = *this_cpu_ptr(aead->tfm_entry); + head = *get_cpu_ptr(aead->tfm_entry); + put_cpu_ptr(aead->tfm_entry); list_for_each_entry_safe(tfm_entry, tmp, &head->list, list) { crypto_free_aead(tfm_entry->tfm); list_del(&tfm_entry->list); @@ -399,10 +400,15 @@ static void tipc_aead_users_set(struct tipc_aead __rcu *aead, int val) */ static struct crypto_aead *tipc_aead_tfm_next(struct tipc_aead *aead) { - struct tipc_tfm **tfm_entry = this_cpu_ptr(aead->tfm_entry); + struct tipc_tfm **tfm_entry; + struct crypto_aead *tfm; + tfm_entry = get_cpu_ptr(aead->tfm_entry); *tfm_entry = list_next_entry(*tfm_entry, list); - return (*tfm_entry)->tfm; + tfm = (*tfm_entry)->tfm; + put_cpu_ptr(tfm_entry); + + return tfm; } /**