[PATCH 21/20] signal: Replace force_sigsegv(SIGSEGV) with force_fatal_sig(SIGSEGV)

STALE1806d

From: Eric W. Biederman <hidden>
Date: 2021-10-20 21:52:14
Also in: linux-mips, linux-s390, linux-sh, linuxppc-dev, lkml, sparclinux
Subsystem: exec & binfmt api, elf, filesystems (vfs and infrastructure), linux for powerpc (32-bit and 64-bit), m68k architecture, s390 architecture, synopsys arc architecture, the rest, user-mode linux (uml), x86 architecture (32-bit and 64-bit) · Maintainers: Kees Cook, Alexander Viro, Christian Brauner, Madhavan Srinivasan, Geert Uytterhoeven, Heiko Carstens, Vasily Gorbik, Alexander Gordeev, Vineet Gupta, Linus Torvalds, Richard Weinberger, Anton Ivanov, Johannes Berg, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen

Possibly related (same subject, not in this thread)

2021-10-21 · Re: [PATCH 21/20] signal: Replace force_sigsegv(SIGSEGV) with force_fatal_sig(SIGSEGV) · Eric W. Biederman <hidden>

Now that force_fatal_sig exists it is unnecessary and a bit confusing
to use force_sigsegv in cases where the simpler force_fatal_sig is
wanted.  So change every instance we can to make the code clearer.

Signed-off-by: "Eric W. Biederman" <redacted>
---
 arch/arc/kernel/process.c       | 2 +-
 arch/m68k/kernel/traps.c        | 2 +-
 arch/powerpc/kernel/signal_32.c | 2 +-
 arch/powerpc/kernel/signal_64.c | 4 ++--
 arch/s390/kernel/traps.c        | 2 +-
 arch/um/kernel/trap.c           | 2 +-
 arch/x86/kernel/vm86_32.c       | 2 +-
 fs/exec.c                       | 2 +-
 8 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c
index 3793876f42d9..8e90052f6f05 100644
--- a/arch/arc/kernel/process.c
+++ b/arch/arc/kernel/process.c

@@ -294,7 +294,7 @@ int elf_check_arch(const struct elf32_hdr *x)
 	eflags = x->e_flags;
 	if ((eflags & EF_ARC_OSABI_MSK) != EF_ARC_OSABI_CURRENT) {
 		pr_err("ABI mismatch - you need newer toolchain\n");
-		force_sigsegv(SIGSEGV);
+		force_fatal_sig(SIGSEGV);
 		return 0;
 	}

diff --git a/arch/m68k/kernel/traps.c b/arch/m68k/kernel/traps.c
index 5b19fcdcd69e..74045d164ddb 100644
--- a/arch/m68k/kernel/traps.c
+++ b/arch/m68k/kernel/traps.c

@@ -1150,7 +1150,7 @@ asmlinkage void set_esp0(unsigned long ssp)
  */
 asmlinkage void fpsp040_die(void)
 {
-	force_sigsegv(SIGSEGV);
+	force_fatal_sig(SIGSEGV);
 }
 
 #ifdef CONFIG_M68KFPU_EMU

diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index 666f3da41232..933ab95805a6 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c

@@ -1063,7 +1063,7 @@ SYSCALL_DEFINE3(swapcontext, struct ucontext __user *, old_ctx,
 	 * We kill the task with a SIGSEGV in this situation.
 	 */
 	if (do_setcontext(new_ctx, regs, 0)) {
-		force_sigsegv(SIGSEGV);
+		force_fatal_sig(SIGSEGV);
 		return -EFAULT;
 	}

diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index d8de622c9e4a..8ead9b3f47c6 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c

@@ -704,7 +704,7 @@ SYSCALL_DEFINE3(swapcontext, struct ucontext __user *, old_ctx,
 	 */
 
 	if (__get_user_sigset(&set, &new_ctx->uc_sigmask)) {
-		force_sigsegv(SIGSEGV);
+		force_fatal_sig(SIGSEGV);
 		return -EFAULT;
 	}
 	set_current_blocked(&set);

@@ -713,7 +713,7 @@ SYSCALL_DEFINE3(swapcontext, struct ucontext __user *, old_ctx,
 		return -EFAULT;
 	if (__unsafe_restore_sigcontext(current, NULL, 0, &new_ctx->uc_mcontext)) {
 		user_read_access_end();
-		force_sigsegv(SIGSEGV);
+		force_fatal_sig(SIGSEGV);
 		return -EFAULT;
 	}
 	user_read_access_end();

diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 51729ea2cf8e..01a7c68dcfb6 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c

@@ -84,7 +84,7 @@ static void default_trap_handler(struct pt_regs *regs)
 {
 	if (user_mode(regs)) {
 		report_user_fault(regs, SIGSEGV, 0);
-		force_sigsegv(SIGSEGV);
+		force_fatal_sig(SIGSEGV);
 	} else
 		die(regs, "Unknown program exception");
 }

diff --git a/arch/um/kernel/trap.c b/arch/um/kernel/trap.c
index 3198c4767387..c32efb09db21 100644
--- a/arch/um/kernel/trap.c
+++ b/arch/um/kernel/trap.c

@@ -158,7 +158,7 @@ static void bad_segv(struct faultinfo fi, unsigned long ip)
 
 void fatal_sigsegv(void)
 {
-	force_sigsegv(SIGSEGV);
+	force_fatal_sig(SIGSEGV);
 	do_signal(&current->thread.regs);
 	/*
 	 * This is to tell gcc that we're not returning - do_signal

diff --git a/arch/x86/kernel/vm86_32.c b/arch/x86/kernel/vm86_32.c
index 040fd01be8b3..7ff0f622abd4 100644
--- a/arch/x86/kernel/vm86_32.c
+++ b/arch/x86/kernel/vm86_32.c

@@ -159,7 +159,7 @@ void save_v86_state(struct kernel_vm86_regs *regs, int retval)
 	user_access_end();
 Efault:
 	pr_alert("could not access userspace vm86 info\n");
-	force_sigsegv(SIGSEGV);
+	force_fatal_sig(SIGSEGV);
 }
 
 static int do_vm86_irq_handling(int subfunction, int irqnumber);

diff --git a/fs/exec.c b/fs/exec.c
index a098c133d8d7..ac7b51b51f38 100644
--- a/fs/exec.c
+++ b/fs/exec.c

@@ -1852,7 +1852,7 @@ static int bprm_execve(struct linux_binprm *bprm,
 	 * SIGSEGV.
 	 */
 	if (bprm->point_of_no_return && !fatal_signal_pending(current))
-		force_sigsegv(SIGSEGV);
+		force_fatal_sig(SIGSEGV);
 
 out_unmark:
 	current->fs->in_exec = 0;

-- 
2.20.1

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