linux/arch/s390/kernel
Heiko Carstens 1389f17937 s390/ftrace: fix arch_ftrace_get_regs implementation
arch_ftrace_get_regs is supposed to return a struct pt_regs pointer
only if the pt_regs structure contains all register contents, which
means it must have been populated when created via ftrace_regs_caller.

If it was populated via ftrace_caller the contents are not complete
(the psw mask part is missing), and therefore a NULL pointer needs be
returned.

The current code incorrectly always returns a struct pt_regs pointer.

Fix this by adding another pt_regs flag which indicates if the
contents are complete, and fix arch_ftrace_get_regs accordingly.

Fixes: 894979689d ("s390/ftrace: provide separate ftrace_caller/ftrace_regs_caller implementations")
Reported-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reported-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01 20:41:28 +01:00
..
syscalls mm/mempolicy: wire up syscall set_mempolicy_home_node 2022-01-15 16:30:30 +02:00
vdso32 s390/vdso: remove -nostdlib compiler flag 2021-11-16 12:29:19 +01:00
vdso64 s390/vdso: filter out -mstack-guard and -mstack-size 2021-11-16 12:29:19 +01:00
.gitignore
alternative.c s390: introduce text_poke_sync() 2021-10-11 20:55:58 +02:00
asm-offsets.c s390: support command lines longer than 896 bytes 2021-10-26 15:21:31 +02:00
audit.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
audit.h
base.S
cache.c
compat_audit.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
compat_linux.c
compat_linux.h
compat_ptrace.h
compat_signal.c s390/signal: switch to using vdso for sigreturn and syscall restart 2021-07-08 22:09:47 +02:00
cpcmd.c s390/cpcmd: use physical address for command and response 2021-10-26 15:21:28 +02:00
crash_dump.c s390/crash_dump: fix virtual vs physical address handling 2021-12-20 10:21:55 +01:00
debug.c s390/sclp: add tracing of SCLP interactions 2021-08-25 11:03:35 +02:00
diag.c s390: rename dma section to amode31 2021-08-05 14:10:53 +02:00
dis.c s390/disassembler: update opcode table 2021-12-16 19:58:07 +01:00
dumpstack.c exit: Add and use make_task_dead. 2021-12-13 12:04:45 -06:00
early_printk.c
early.c s390: support command lines longer than 896 bytes 2021-10-26 15:21:31 +02:00
ebcdic.c
entry.h s390/boot: allocate amode31 section in decompressor 2021-10-04 09:49:37 +02:00
entry.S s390: add support for BEAR enhancement facility 2021-10-26 15:21:29 +02:00
fpu.c
ftrace.c s390/ftrace: fix arch_ftrace_get_regs implementation 2022-03-01 20:41:28 +01:00
ftrace.h s390/ftrace: implement hotpatching 2021-08-03 14:31:40 +02:00
guarded_storage.c
head64.S s390/boot: initialize control registers in decompressor 2021-10-04 09:49:37 +02:00
idle.c
ima_arch.c
ipl_vmparm.c s390/cio: remove unused include linux/spinlock.h from cio.h 2021-07-27 09:39:13 +02:00
ipl.c s390/kexec: fix return code handling 2021-11-18 17:25:35 +01:00
irq.c s390/entry: fix duplicate tracking of irq nesting level 2021-12-12 18:52:26 +01:00
jump_label.c s390/jump_label: add __init_or_module annotation 2021-10-11 20:55:58 +02:00
kdebugfs.c
kexec_elf.c
kexec_image.c
kprobes_insn_page.S
kprobes.c s390 updates for the 5.16 merge window 2021-11-06 14:48:06 -07:00
lgr.c
machine_kexec_file.c s390/kexec: handle R_390_PLT32DBL rela in arch_kexec_apply_relocations_add() 2021-12-10 16:12:34 +01:00
machine_kexec_reloc.c
machine_kexec.c s390/nmi: add missing __pa/__va address conversion of extended save area 2021-12-06 14:42:26 +01:00
Makefile arch: Make ARCH_STACKWALK independent of STACKTRACE 2021-12-10 14:06:03 +00:00
mcount.S s390/ftrace: fix arch_ftrace_get_regs implementation 2022-03-01 20:41:28 +01:00
module.c s390/module: fix loading modules with a lot of relocations 2022-01-24 09:10:37 +01:00
nmi.c s390/nmi: handle vector validity failures for KVM guests 2022-01-23 10:20:03 +01:00
nospec-branch.c s390: introduce nospec_uses_trampoline() 2021-10-26 15:21:29 +02:00
nospec-sysfs.c s390: introduce nospec_uses_trampoline() 2021-10-26 15:21:29 +02:00
numa.c
os_info.c s390/dump: introduce boot data 'oldmem_data' 2021-07-27 09:39:16 +02:00
perf_cpum_cf_common.c s390/cpumf: Support for CPU Measurement Facility CSVN 7 2022-01-17 14:13:08 +01:00
perf_cpum_cf_events.c s390/cpumf: Support for CPU Measurement Facility CSVN 7 2022-01-17 14:13:08 +01:00
perf_cpum_cf.c s390/cpumf: cpum_cf PMU displays invalid value after hotplug remove 2021-11-08 14:17:49 +01:00
perf_cpum_sf.c s390/cpumf: Support for CPU Measurement Sampling Facility LS bit 2022-01-17 14:13:08 +01:00
perf_event.c
perf_regs.c
process.c s390/exit: remove dead reference to do_exit from copy_thread 2021-12-16 19:58:06 +01:00
processor.c s390: replace deprecated CPU-hotplug functions 2021-08-05 14:10:53 +02:00
ptrace.c s390/traps: add struct to access transactional diagnostic block 2021-06-07 17:06:58 +02:00
reipl.S
relocate_kernel.S
runtime_instr.c
setup.c s390/setup: preserve memory at OLDMEM_BASE and OLDMEM_SIZE 2022-03-01 20:41:28 +01:00
signal.c s390: remove do_signal() prototype and do_notify_resume() function 2021-08-25 11:03:34 +02:00
smp.c s390/crash_dump: fix virtual vs physical address handling 2021-12-20 10:21:55 +01:00
stacktrace.c kprobes: treewide: Make it harder to refer kretprobe_trampoline directly 2021-09-30 21:24:06 -04:00
sthyi.c s390/sthyi: use register pair instead of register asm 2021-06-18 16:41:22 +02:00
syscall.c s390: add support for BEAR enhancement facility 2021-10-26 15:21:29 +02:00
sysinfo.c s390/sysinfo: get rid of register asm 2021-06-18 16:41:23 +02:00
text_amode31.S s390/diag: make restart_part2 a local label 2021-08-25 11:03:34 +02:00
time.c
topology.c s390/topology: fix topology information when calling cpu hotplug notifiers 2021-09-07 13:38:41 +02:00
trace.c
traps.c signal: Replace force_fatal_sig with force_exit_sig when in doubt 2021-11-19 09:15:58 -06:00
unwind_bc.c
uprobes.c s390: Fix fall-through warnings for Clang 2021-07-13 14:43:09 -05:00
uv.c s390/uv: fix memblock virtual vs physical address confusion 2021-12-16 19:58:07 +01:00
vdso.c s390/vdso: add minimal compat vdso 2021-07-08 15:37:28 +02:00
vmlinux.lds.S s390/boot: allocate amode31 section in decompressor 2021-10-04 09:49:37 +02:00
vtime.c