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| author | Christian Brauner <brauner@kernel.org> | 2026-09-21 15:45:04 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2026-09-22 15:33:21 +0200 |
| commit | c7de3d02e678490b3aa0796d9be7dfe5f259374a (patch) | |
| tree | 8edfc785cebf763aa56d4c1d55d185f74e88eac6 /kernel | |
| parent | 1f978881ce6c9ac4f4d4a7b6a6e52339eadcd350 (diff) | |
| download | linux-c7de3d02e678490b3aa0796d9be7dfe5f259374a.tar.gz linux-c7de3d02e678490b3aa0796d9be7dfe5f259374a.zip | |
fork: use SIG_KERNEL_ONLY_MASK for the user worker signal mask
For a user worker copy_process() blocks every signal except for SIGKILL
and SIGSTOP. Use SIG_KERNEL_ONLY_MASK instead of open-coding it.
No functional changes.
Link: https://patch.msgid.link/20260921-work-coredump-fixes-v3-15-8e4adb1619e6@kernel.org
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/fork.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 623eaead3747..1a20264e9b89 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2140,12 +2140,9 @@ __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; |