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Eric W. Biederman 5eded74b49 exit: Add and use make_task_dead. 
commit 0e25498f8cd43c1b5aa327f373dd094e9a006da7 upstream.

There are two big uses of do_exit.  The first is it's design use to be
the guts of the exit(2) system call.  The second use is to terminate
a task after something catastrophic has happened like a NULL pointer
in kernel code.

Add a function make_task_dead that is initialy exactly the same as
do_exit to cover the cases where do_exit is called to handle
catastrophic failure.  In time this can probably be reduced to just a
light wrapper around do_task_dead. For now keep it exactly the same so
that there will be no behavioral differences introducing this new
concept.

Replace all of the uses of do_exit that use it for catastraphic
task cleanup with make_task_dead to make it clear what the code
is doing.

As part of this rename rewind_stack_do_exit
rewind_stack_and_make_dead.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-02-06 07:46:33 +01:00
..
trace
vdso32 powerpc: Fix vDSO clock_getres() 2019-12-17 20:39:57 +01:00
vdso64 powerpc: Fix vDSO clock_getres() 2019-12-17 20:39:57 +01:00
.gitignore
align.c
asm-offsets.c powerpc: Fix vDSO clock_getres() 2019-12-17 20:39:57 +01:00
audit.c
btext.c powerpc/btext: add missing of_node_put 2022-01-27 09:00:57 +01:00
cacheinfo.c powerpc/cacheinfo: add cacheinfo_teardown, cacheinfo_rebuild 2020-01-27 14:46:37 +01:00
cacheinfo.h powerpc/cacheinfo: add cacheinfo_teardown, cacheinfo_rebuild 2020-01-27 14:46:37 +01:00
compat_audit.c
cpu_setup_6xx.S
cpu_setup_44x.S
cpu_setup_fsl_booke.S
cpu_setup_pa6t.S
cpu_setup_power.S powerpc/64s: Don't init FSCR_DSCR in __init_FSCR() 2020-09-03 11:22:23 +02:00
cpu_setup_ppc970.S
cputable.c powerpc: fix hardware PMU exception bug on PowerVM compatibility mode systems 2020-03-11 18:03:08 +01:00
crash.c
crash_dump.c
dbell.c
dma-iommu.c powerpc/dma: Fix dma_map_ops::get_required_mask 2020-09-23 10:46:37 +02:00
dma-swiotlb.c
dma.c
dt_cpu_ftrs.c powerpc/64s: Don't let DT CPU features set FSCR_DSCR 2020-06-20 10:25:20 +02:00
eeh.c powerpc/eeh: Fix EEH handling for hugepages in ioremap space. 2021-05-22 10:57:21 +02:00
eeh_cache.c
eeh_dev.c
eeh_driver.c powerpc/powernv/iov: Ensure the pdn for VFs always contains a valid PE number 2020-02-28 16:35:56 +01:00
eeh_event.c
eeh_pe.c powerpc/eeh: Fix use of EEH_PE_KEEP on wrong field 2019-12-01 09:13:18 +01:00
eeh_sysfs.c
entry_32.S powerpc/fsl: Sanitize the syscall table for NXP PowerPC 32 bit platforms 2019-04-03 06:25:13 +02:00
entry_64.S powerpc/book3s64: Fix link stack flush on context switch 2019-12-01 09:14:36 +01:00
epapr_hcalls.S
epapr_paravirt.c
exceptions-64e.S powerpc/fsl: Fix the flush of branch predictor. 2019-04-03 06:25:15 +02:00
exceptions-64s.S powerpc/64s: flush L1D after user accesses 2020-11-22 10:00:24 +01:00
fadump.c
firmware.c
fpu.S
fsl_booke_entry_mapping.S
head_8xx.S powerpc/8xx: Fix software emulation interrupt 2021-03-03 18:22:47 +01:00
head_32.S
head_40x.S
head_44x.S
head_64.S powerpc/64: mark start_here_multiplatform as __ref 2019-09-16 08:20:45 +02:00
head_booke.h powerpc/fsl: Fixed warning: orphan section `__btb_flush_fixup' 2019-04-03 06:25:15 +02:00
head_fsl_booke.S powerpc/fsl: Flush the branch predictor at each kernel entry (32 bit) 2019-04-03 06:25:14 +02:00
hw_breakpoint.c
idle.c powerpc/idle: Fix return value of __setup() handler 2022-06-14 16:53:51 +02:00
idle_6xx.S
idle_book3e.S
idle_book3s.S powerpc/powernv/idle: Restore AMR/UAMOR/AMOR after idle 2020-04-24 08:00:45 +02:00
idle_e500.S
idle_power4.S
ima_kexec.c
io-workarounds.c
io.c
iomap.c
iommu.c powerpc/iommu: Annotate nested lock for lockdep 2021-05-22 10:57:37 +02:00
irq.c powerpc/irq: fix stack overflow verification 2019-12-31 12:38:05 +01:00
isa-bridge.c
jump_label.c
kexec_elf_64.c
kgdb.c
kprobes-ftrace.c
kprobes.c powerpc/kprobes: Fix kprobe Oops happens in booke 2021-08-26 08:37:03 -04:00
kvm.c kmemleak: powerpc: skip scanning holes in the .bss section 2019-05-08 07:20:50 +02:00
kvm_emul.S
l2cr_6xx.S
legacy_serial.c
machine_kexec.c powerpc: Set crashkernel offset to mid of RMA region 2022-04-20 09:08:26 +02:00
machine_kexec_32.c
machine_kexec_64.c
machine_kexec_file_64.c
Makefile powerpc/32: Fix boot failure with GCC latent entropy plugin 2022-02-08 18:16:25 +01:00
mce.c
mce_power.c
misc.S
misc_32.S
misc_64.S powerpc: Allow flush_icache_range to work across ranges >4GB 2019-12-17 20:39:41 +01:00
module.c powerpc/64: Add CONFIG_PPC_BARRIER_NOSPEC 2019-04-03 06:25:12 +02:00
module_32.c
module_64.c powerpc/module64: Fix comment in R_PPC64_ENTRY handling 2021-09-22 11:45:16 +02:00
msi.c
nvram_64.c pstore: Convert buf_lock to semaphore 2019-06-11 12:21:48 +02:00
of_platform.c
optprobes.c
optprobes_head.S
paca.c
pci-common.c powerpc/pci: Fix get_phb_number() locking 2022-08-25 11:11:34 +02:00
pci-hotplug.c
pci_32.c
pci_64.c
pci_dn.c powerpc/pci_dn: Add missing of_node_put() 2022-10-26 13:17:07 +02:00
pci_of_scan.c powerpc/pci/of: Parse unassigned resources 2020-05-10 10:28:58 +02:00
pmc.c
ppc32.h
ppc_save_regs.S
proc_powerpc.c
process.c powerpc: Enable execve syscall exit tracepoint 2022-07-02 16:18:09 +02:00
prom.c powerpc/64: Init jump labels before parse_early_param() 2022-08-25 11:11:37 +02:00
prom_init.c powerpc/prom_init: Fix improper check of prom_getprop() 2022-01-27 09:00:52 +01:00
prom_init_check.sh
prom_parse.c
ptrace.c powerpc/32: Fix overread/overwrite of thread_struct via ptrace 2022-06-14 16:54:02 +02:00
ptrace32.c
reloc_32.S
reloc_64.S
rtas-proc.c
rtas-rtc.c
rtas.c powerpc/rtas: avoid scheduling in rtas_os_term() 2023-01-18 09:26:35 +01:00
rtas_flash.c
rtas_pci.c
rtasd.c powerpc/pseries: Remove prrn_work workqueue 2019-04-20 09:15:04 +02:00
security.c powerpc/security: Fix wrong message when RFI Flush is disable 2020-01-04 13:59:44 +01:00
setup-common.c powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used 2019-04-03 06:25:14 +02:00
setup.h
setup_32.c
setup_64.c powerpc/64s: flush L1D after user accesses 2020-11-22 10:00:24 +01:00
signal.c
signal.h
signal_32.c powerpc/tm: Fix oops on sigreturn on systems without TM 2019-07-31 07:28:58 +02:00
signal_64.c powerpc/64/tm: Don't let userspace set regs->trap via sigreturn 2020-04-24 08:00:46 +02:00
smp-tbsync.c
smp.c powerpc/smp: Move setup_profiling_timer() under CONFIG_PROFILING 2022-01-27 09:00:58 +01:00
stacktrace.c
suspend.c
swsusp.c
swsusp_32.S powerpc/32s: fix suspend/resume when IBATs 4-7 are used 2019-07-31 07:28:42 +02:00
swsusp_64.c
swsusp_asm64.S
swsusp_booke.S
sys_ppc32.c
syscalls.c
sysfs.c powerpc: Warn about use of smt_snooze_delay 2020-11-05 11:07:02 +01:00
systbl.S
systbl_chk.c
systbl_chk.sh
tau_6xx.c powerpc/tau: Disable TAU between measurements 2020-10-29 09:07:09 +01:00
time.c powerpc/pseries: Mark accumulate_stolen_time() as notrace 2020-01-04 13:59:38 +01:00
tm.S
traps.c exit: Add and use make_task_dead. 2023-02-06 07:46:33 +01:00
udbg.c
udbg_16550.c
uprobes.c
vdso.c powerpc/vdso: Fix vdso cpu truncation 2020-08-21 09:48:09 +02:00
vecemu.c
vector.S
vmlinux.lds.S powerpc/64s: flush L1D after user accesses 2020-11-22 10:00:24 +01:00
watchdog.c powerpc/watchdog: Fix missed watchdog reset due to memory ordering race 2022-01-27 09:00:57 +01:00