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get_signal: don't abuse ksig->info.si_signo and ksig->sig
Patch series "get_signal: minor cleanups and fix". Lets remove this clear_siginfo() right now. It is incomplete (and thus looks confusing) and unnecessary. Also, PF_USER_WORKER's already don't get a fully initialized ksig anyway. This patch (of 3): Cleanup and preparation for the next changes. get_signal() uses signr or ksig->info.si_signo or ksig->sig in a chaotic way, this looks confusing. Change it to always use signr. Link: https://lkml.kernel.org/r/20240226165612.GA20787@redhat.com Link: https://lkml.kernel.org/r/20240226165647.GA20826@redhat.com Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Peter Collingbourne <pcc@google.com> Cc: Wen Yang <wenyang.linux@foxmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -2842,7 +2842,7 @@ bool get_signal(struct ksignal *ksig)
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spin_lock_irq(&sighand->siglock);
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}
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if (likely(do_signal_stop(ksig->info.si_signo))) {
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if (likely(do_signal_stop(signr))) {
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/* It released the siglock. */
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goto relock;
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}
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@ -2866,7 +2866,7 @@ bool get_signal(struct ksignal *ksig)
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if (sig_kernel_coredump(signr)) {
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if (print_fatal_signals)
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print_fatal_signal(ksig->info.si_signo);
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print_fatal_signal(signr);
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proc_coredump_connector(current);
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/*
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* If it was able to dump core, this kills all
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@ -2890,7 +2890,7 @@ bool get_signal(struct ksignal *ksig)
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/*
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* Death signals, no core dump.
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*/
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do_group_exit(ksig->info.si_signo);
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do_group_exit(signr);
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/* NOTREACHED */
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}
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spin_unlock_irq(&sighand->siglock);
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@ -2900,7 +2900,7 @@ bool get_signal(struct ksignal *ksig)
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if (!(ksig->ka.sa.sa_flags & SA_EXPOSE_TAGBITS))
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hide_si_addr_tag_bits(ksig);
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return ksig->sig > 0;
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return signr > 0;
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}
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/**
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