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McKenney" Cc: Linus Torvalds , Ingo Molnar , Thomas Gleixner , linux-kernel@vger.kernel.org, Peter Zijlstra , x86-ml , Madhuparna Bhowmik , Christian Brauner Subject: Re: [GIT PULL] timer fixes Message-ID: References: <20220814172445.GR2125313@paulmck-ThinkPad-P17-Gen-1> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20220814172445.GR2125313@paulmck-ThinkPad-P17-Gen-1> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Aug 14, 2022 at 10:24:45AM -0700, Paul E. McKenney wrote: > If it is causing more trouble than it is worth, then I have not objection > to taking a different approach. Well, pretty much every file I tried in the output of git grep -e '->sighand' triggers that sparse warning. For example: $ make C=1 kernel/signal.o ... kernel/signal.c:195:31: warning: incorrect type in argument 1 (different address spaces) kernel/signal.c:195:31: expected struct spinlock [usertype] *lock kernel/signal.c:195:31: got struct spinlock [noderef] __rcu * kernel/signal.c:198:33: warning: incorrect type in argument 1 (different address spaces) kernel/signal.c:198:33: expected struct spinlock [usertype] *lock kernel/signal.c:198:33: got struct spinlock [noderef] __rcu * kernel/signal.c:480:9: warning: incorrect type in argument 1 (different address spaces) kernel/signal.c:480:9: expected struct spinlock [usertype] *lock kernel/signal.c:480:9: got struct spinlock [noderef] __rcu * kernel/signal.c:484:34: warning: incorrect type in argument 1 (different address spaces) kernel/signal.c:484:34: expected struct spinlock [usertype] *lock kernel/signal.c:484:34: got struct spinlock [noderef] __rcu * kernel/signal.c:517:9: warning: incorrect type in argument 1 (different address spaces) kernel/signal.c:517:9: expected struct spinlock [usertype] *lock kernel/signal.c:517:9: got struct spinlock [noderef] __rcu * kernel/signal.c:520:36: warning: incorrect type in argument 1 (different address spaces) kernel/signal.c:520:36: expected struct spinlock [usertype] *lock kernel/signal.c:520:36: got struct spinlock [noderef] __rcu * kernel/signal.c:542:53: warning: incorrect type in initializer (different address spaces) kernel/signal.c:542:53: expected struct k_sigaction *ka kernel/signal.c:542:53: got struct k_sigaction [noderef] __rcu * ./include/uapi/asm-generic/signal-defs.h:83:29: error: multiple address spaces given kernel/signal.c:698:33: warning: incorrect type in argument 1 (different address spaces) kernel/signal.c:698:33: expected struct spinlock [usertype] *lock kernel/signal.c:698:33: got struct spinlock [noderef] __rcu * kernel/signal.c:700:31: warning: incorrect type in argument 1 (different address spaces) kernel/signal.c:700:31: expected struct spinlock [usertype] *lock kernel/signal.c:700:31: got struct spinlock [noderef] __rcu * kernel/signal.c:1328:9: warning: incorrect type in argument 1 (different address spaces) kernel/signal.c:1328:9: expected struct spinlock [usertype] *lock kernel/signal.c:1328:9: got struct spinlock [noderef] __rcu * kernel/signal.c:1329:16: warning: incorrect type in assignment (different address spaces) kernel/signal.c:1329:16: expected struct k_sigaction *action kernel/signal.c:1329:16: got struct k_sigaction [noderef] __rcu * kernel/signal.c:1349:34: warning: incorrect type in argument 1 (different address spaces) kernel/signal.c:1349:34: expected struct spinlock [usertype] *lock kernel/signal.c:1349:34: got struct spinlock [noderef] __rcu * kernel/signal.c:1938:36: warning: incorrect type in initializer (different address spaces) kernel/signal.c:1938:36: expected struct spinlock [usertype] *lock kernel/signal.c:1938:36: got struct spinlock [noderef] __rcu * kernel/signal.c:2048:44: warning: cast removes address space '__rcu' of expression kernel/signal.c:2067:65: warning: too many warnings -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette