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b=dcitShqSPUuBBKA4+9P37TcOhG u7PqftO+reDMPuDKrTaP4COiidnrQNYhqrUuz9RukvpTJp2gJpPv4W/YtsqtSG8g8AquTq3IprFER VxAVoVW8/k2sFNeNg2R2p8YJ8JKugf02aO5keT0AxLXt3mr54ivsCOMEcnqJK3qUhTk/zjAW6CArQ MwBPbyfWOrwyFPUlTSmn6W9xU4xiVNNafCN6t7gVsnlmxzmgx7THcsJOtBGW9CqoZFda7OcOYQ33K g1cHk59nVGk+2UdcdyIUxwskYIMot9FQ3Yy4WLFfhaArAJQK0uzyMDmz/GUy0GnrA1Q/FJW5aEmo4 7JXrWb/A==; Received: from [223.233.68.152] (helo=localhost.localdomain) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1up2RD-00HBmV-Hy; Thu, 21 Aug 2025 12:22:31 +0200 From: Bhupesh To: akpm@linux-foundation.org Cc: bhupesh@igalia.com, kernel-dev@igalia.com, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, oliver.sang@intel.com, lkp@intel.com, laoar.shao@gmail.com, pmladek@suse.com, rostedt@goodmis.org, mathieu.desnoyers@efficios.com, arnaldo.melo@gmail.com, alexei.starovoitov@gmail.com, andrii.nakryiko@gmail.com, mirq-linux@rere.qmqm.pl, peterz@infradead.org, willy@infradead.org, david@redhat.com, viro@zeniv.linux.org.uk, keescook@chromium.org, ebiederm@xmission.com, brauner@kernel.org, jack@suse.cz, mingo@redhat.com, juri.lelli@redhat.com, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, linux-trace-kernel@vger.kernel.org, kees@kernel.org, torvalds@linux-foundation.org Subject: [PATCH v8 5/5] include: Replace BUILD_BUG_ON with static_assert in 'set_task_comm()' Date: Thu, 21 Aug 2025 15:51:52 +0530 Message-Id: <20250821102152.323367-6-bhupesh@igalia.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20250821102152.323367-1-bhupesh@igalia.com> References: <20250821102152.323367-1-bhupesh@igalia.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: D8CDF40007 X-Stat-Signature: sk38ewph1kfqu46uqhz368taaffuzeyt X-HE-Tag: 1755771755-22764 X-HE-Meta: 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 i7URR1AY Do5zaiME9ljEpWbWHZIsHbr4vvMqiho9gGPfZU7YKwdO2yHV2ZXzLTvCmY7Zxub3veBb0ea4dx0/MvwTxK8+mOIspH2FRs53ThiJ6Yuw2fWC3EplmKk13Rt4O4ocobxQwlRQenKXX+Ha2fCFb/OcCVSsSrwofWMVrt5wTTrpYbKFwO5sb5MvU36ftfS11+hkzGBDj1lctUHM6cZWZWWLygBefElnHcny3U+VsDYRjmM4CF+gC0XuDR642y8FCncYPX5SAf53M2DN4B0BI3hB90ZaoDfWAQZDUyLQ5awfVjvyZeixpYCw6wR3ED4MQmBDiCAYy0K9v2+Ha4TIciA4x2x1JVAvQsh9Zj92/W5l7Qs3CLO/PRAmEcdzh2vSilS+M9HL16tveQ3xtKbfbXjnCYkvSOaQOQmxr8kv16JLwU7nvM+4= 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: Replace BUILD_BUG_ON() with static_assert() inside 'set_task_comm()', to benefit from the error message available with static_assert(). Signed-off-by: Bhupesh --- include/linux/sched.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/sched.h b/include/linux/sched.h index d26d1dfb9904..2603a674ee22 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1972,7 +1972,8 @@ extern void kick_process(struct task_struct *tsk); extern void __set_task_comm(struct task_struct *tsk, const char *from, bool exec); #define set_task_comm(tsk, from) ({ \ - BUILD_BUG_ON(sizeof(from) < TASK_COMM_LEN); \ + static_assert(sizeof(from) >= TASK_COMM_LEN, \ + "tsk->comm size being set should be >= TASK_COMM_LEN"); \ __set_task_comm(tsk, from, false); \ }) -- 2.38.1