This is a note to let you know that I've just added the patch titled signal: Replace force_sigsegv(SIGSEGV) with force_fatal_sig(SIGSEGV) to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: signal-replace-force_sigsegv-sigsegv-with-force_fatal_sig-sigsegv.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From e21294a7aaae32c5d7154b187113a04db5852e37 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx> Date: Mon, 25 Oct 2021 10:50:57 -0500 Subject: signal: Replace force_sigsegv(SIGSEGV) with force_fatal_sig(SIGSEGV) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Eric W. Biederman <ebiederm@xxxxxxxxxxxx> commit e21294a7aaae32c5d7154b187113a04db5852e37 upstream. 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. Acked-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Reviewed-by: Philippe Mathieu-Daudé <f4bug@xxxxxxxxx> Link: https://lkml.kernel.org/r/877de7jrev.fsf@disp2133 Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx> Cc: Thomas Backlund <tmb@xxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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(-) --- a/arch/arc/kernel/process.c +++ b/arch/arc/kernel/process.c @@ -294,7 +294,7 @@ int elf_check_arch(const struct elf32_hd 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; } --- a/arch/m68k/kernel/traps.c +++ b/arch/m68k/kernel/traps.c @@ -1145,7 +1145,7 @@ asmlinkage void set_esp0(unsigned long s */ asmlinkage void fpsp040_die(void) { - force_sigsegv(SIGSEGV); + force_fatal_sig(SIGSEGV); } #ifdef CONFIG_M68KFPU_EMU --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -1063,7 +1063,7 @@ SYSCALL_DEFINE3(swapcontext, struct ucon * 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; } --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -704,7 +704,7 @@ SYSCALL_DEFINE3(swapcontext, struct ucon */ 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 ucon 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(); --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -84,7 +84,7 @@ static void default_trap_handler(struct { if (user_mode(regs)) { report_user_fault(regs, SIGSEGV, 0); - force_sigsegv(SIGSEGV); + force_fatal_sig(SIGSEGV); } else die(regs, "Unknown program exception"); } --- a/arch/um/kernel/trap.c +++ b/arch/um/kernel/trap.c @@ -158,7 +158,7 @@ static void bad_segv(struct faultinfo fi void fatal_sigsegv(void) { - force_sigsegv(SIGSEGV); + force_fatal_sig(SIGSEGV); do_signal(¤t->thread.regs); /* * This is to tell gcc that we're not returning - do_signal --- a/arch/x86/kernel/vm86_32.c +++ b/arch/x86/kernel/vm86_32.c @@ -162,7 +162,7 @@ Efault_end: user_access_end(); Efault: pr_alert("could not access userspace vm86 info\n"); - force_sigsegv(SIGSEGV); + force_fatal_sig(SIGSEGV); goto exit_vm86; } --- a/fs/exec.c +++ b/fs/exec.c @@ -1852,7 +1852,7 @@ out: * 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; Patches currently in stable-queue which might be from ebiederm@xxxxxxxxxxxx are queue-5.15/signal-vm86_32-properly-send-sigsegv-when-the-vm86-state-cannot-be-saved.patch queue-5.15/signal-don-t-always-set-sa_immutable-for-forced-signals.patch queue-5.15/signal-x86-in-emulate_vsyscall-force-a-signal-instead-of-calling-do_exit.patch queue-5.15/ipc-warn-if-trying-to-remove-ipc-object-which-is-absent.patch queue-5.15/signal-replace-force_sigsegv-sigsegv-with-force_fatal_sig-sigsegv.patch queue-5.15/signal-powerpc-on-swapcontext-failure-force-sigsegv.patch queue-5.15/exit-syscall_user_dispatch-send-ordinary-signals-on-failure.patch queue-5.15/signal-s390-use-force_sigsegv-in-default_trap_handler.patch queue-5.15/signal-implement-force_fatal_sig.patch queue-5.15/signal-sparc32-in-setup_rt_frame-and-setup_fram-use-force_fatal_sig.patch queue-5.15/signal-sparc32-exit-with-a-fatal-signal-when-try_to_clear_window_buffer-fails.patch queue-5.15/shm-extend-forced-shm-destroy-to-support-objects-from-several-ipc-nses.patch queue-5.15/signal-replace-force_fatal_sig-with-force_exit_sig-when-in-doubt.patch