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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , linux-mm@kvack.org, linux-kernel Subject: [bug report] io_uring: add task fork hook Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: [ Smatch checking is paused while we raise funding. #SadFace https://lore.kernel.org/all/aTaiGSbWZ9DJaGo7@stanley.mountain/ -dan ] Hello Jens Axboe, Commit 4f08520591a2 ("io_uring: add task fork hook") from Jan 16, 2026 (linux-next), leads to the following Smatch static checker warning: kernel/fork.c:2544 copy_process() warn: passing zero to 'ERR_PTR' kernel/fork.c 2128 #ifdef CONFIG_IO_URING 2129 p->io_uring = NULL; 2130 retval = io_uring_fork(p); The patch added this assignment. 2131 if (unlikely(retval)) 2132 goto bad_fork_cleanup_delayacct; 2133 #endif 2134 2135 p->default_timer_slack_ns = current->timer_slack_ns; 2136 2137 #ifdef CONFIG_PSI 2138 p->psi_flags = 0; 2139 #endif 2140 2141 task_io_accounting_init(&p->ioac); 2142 acct_clear_integrals(p); 2143 2144 posix_cputimers_init(&p->posix_cputimers); 2145 tick_dep_init_task(p); 2146 2147 p->io_context = NULL; 2148 audit_set_context(p, NULL); 2149 cgroup_fork(p); 2150 if (args->kthread) { 2151 if (!set_kthread_struct(p)) 2152 goto bad_fork_cleanup_delayacct; So now retval is success where previously it had been -EAGAIN 2153 } regards, dan carpenter