5147da902e
Pull exit cleanups from Eric Biederman: "While looking at some issues related to the exit path in the kernel I found several instances where the code is not using the existing abstractions properly. This set of changes introduces force_fatal_sig a way of sending a signal and not allowing it to be caught, and corrects the misuse of the existing abstractions that I found. A lot of the misuse of the existing abstractions are silly things such as doing something after calling a no return function, rolling BUG by hand, doing more work than necessary to terminate a kernel thread, or calling do_exit(SIGKILL) instead of calling force_sig(SIGKILL). In the review a deficiency in force_fatal_sig and force_sig_seccomp where ptrace or sigaction could prevent the delivery of the signal was found. I have added a change that adds SA_IMMUTABLE to change that makes it impossible to interrupt the delivery of those signals, and allows backporting to fix force_sig_seccomp And Arnd found an issue where a function passed to kthread_run had the wrong prototype, and after my cleanup was failing to build." * 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (23 commits) soc: ti: fix wkup_m3_rproc_boot_thread return type signal: Add SA_IMMUTABLE to ensure forced siganls do not get changed signal: Replace force_sigsegv(SIGSEGV) with force_fatal_sig(SIGSEGV) exit/r8188eu: Replace the macro thread_exit with a simple return 0 exit/rtl8712: Replace the macro thread_exit with a simple return 0 exit/rtl8723bs: Replace the macro thread_exit with a simple return 0 signal/x86: In emulate_vsyscall force a signal instead of calling do_exit signal/sparc32: In setup_rt_frame and setup_fram use force_fatal_sig signal/sparc32: Exit with a fatal signal when try_to_clear_window_buffer fails exit/syscall_user_dispatch: Send ordinary signals on failure signal: Implement force_fatal_sig exit/kthread: Have kernel threads return instead of calling do_exit signal/s390: Use force_sigsegv in default_trap_handler signal/vm86_32: Properly send SIGSEGV when the vm86 state cannot be saved. signal/vm86_32: Replace open coded BUG_ON with an actual BUG_ON signal/sparc: In setup_tsb_params convert open coded BUG into BUG signal/powerpc: On swapcontext failure force SIGSEGV signal/sh: Use force_sig(SIGKILL) instead of do_group_exit(SIGKILL) signal/mips: Update (_save|_restore)_fp_context to fail with -EFAULT signal/sparc32: Remove unreachable do_exit in do_sparc_fault ... |
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arm_ffa | ||
arm_scmi | ||
broadcom | ||
cirrus | ||
efi | ||
imx | ||
meson | ||
psci | ||
smccc | ||
tegra | ||
xilinx | ||
arm_scpi.c | ||
arm_sdei.c | ||
dmi_scan.c | ||
dmi-id.c | ||
dmi-sysfs.c | ||
edd.c | ||
iscsi_ibft_find.c | ||
iscsi_ibft.c | ||
Kconfig | ||
Makefile | ||
memmap.c | ||
pcdp.c | ||
pcdp.h | ||
qcom_scm-legacy.c | ||
qcom_scm-smc.c | ||
qcom_scm.c | ||
qcom_scm.h | ||
qemu_fw_cfg.c | ||
raspberrypi.c | ||
scpi_pm_domain.c | ||
stratix10-rsu.c | ||
stratix10-svc.c | ||
sysfb_simplefb.c | ||
sysfb.c | ||
ti_sci.c | ||
ti_sci.h | ||
trusted_foundations.c | ||
turris-mox-rwtm.c |