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t=1789998360; bh=XxgAqAUyM3r1AMPXMQ8hoig8LfHIWtySTBDxI0y9Hk8=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=Icz+xHLQDbSSHi+N16YU2y1GynY0LZOE3JZDzMAEEJb1D9m6KWdZXk6U6V/zR4B+b 7BQ0M3FukLH+6GiiG/lrkgJnTx7AD7Sb6I6vnfmSz5HLp5Dix+bFsCqut5L3GjA84M H81IAH19uXN6Xpky01tPMlFxnH0Fpg0k8NQlnf0R0XcS9UWA8CYZGJPPB9dFi/5Pmk 7xDw0is63fwMPgi2HR6RClWMOqNiQzerzUvn5Zll65iyjGHicysJEoPvNi8FAxlajD iJ+9qqED0JN0fTAPWDJA+iFMly2UY9vjm5b0x3DmUfPelnNqQ6VHRnVMnsqCYGF42n 6q6C1ZI5oYsmg== From: Christian Brauner Date: Mon, 21 Sep 2026 15:45:04 +0200 Subject: [PATCH v3 15/17] fork: use SIG_KERNEL_ONLY_MASK for the user worker signal mask MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260921-work-coredump-fixes-v3-15-8e4adb1619e6@kernel.org> References: <20260921-work-coredump-fixes-v3-0-8e4adb1619e6@kernel.org> In-Reply-To: <20260921-work-coredump-fixes-v3-0-8e4adb1619e6@kernel.org> To: Oleg Nesterov , Chris Mason , linux-fsdevel@vger.kernel.org Cc: Jens Axboe , Alexander Viro , Jan Kara , NeilBrown , Ingo Molnar , Peter Zijlstra , linux-mm@kvack.org, io-uring@vger.kernel.org, "Christian Brauner (Amutable)" X-Mailer: b4 0.17-dev-db0b7 X-Developer-Signature: v=1; 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Use SIG_KERNEL_ONLY_MASK instead of open-coding it. No functional changes. Signed-off-by: Christian Brauner (Amutable) --- kernel/fork.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/kernel/fork.c b/kernel/fork.c index fd2829b0a8b6..be5980d0dd9f 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2146,12 +2146,9 @@ __latent_entropy struct task_struct *copy_process( if (args->kthread) p->flags |= PF_KTHREAD; if (args->user_worker) { - /* - * Mark us a user worker, and block any signal that isn't - * fatal or STOP - */ + /* A user worker takes only the signals nobody can block. */ p->flags |= PF_USER_WORKER; - siginitsetinv(&p->blocked, sigmask(SIGKILL)|sigmask(SIGSTOP)); + siginitsetinv(&p->blocked, SIG_KERNEL_ONLY_MASK); } if (args->io_thread) p->flags |= PF_IO_WORKER; -- 2.53.0