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7c17909a889d05abf3401a13823834d076651dd5
linux/arch/s390/kernel
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Sven Schnelle 7c17909a88 s390/ptrace: fix setting syscall number 
[ Upstream commit 873e5a763d ]

When strace wants to update the syscall number, it sets GPR2
to the desired number and updates the GPR via PTRACE_SETREGSET.
It doesn't update regs->int_code which would cause the old syscall
executed on syscall restart. As we cannot change the ptrace ABI and
don't have a field for the interruption code, check whether the tracee
is in a syscall and the last instruction was svc. In that case assume
that the tracer wants to update the syscall number and copy the GPR2
value to regs->int_code.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-30 15:37:04 -04:00
..
syscalls
s390: wire up clone3 system call
2019-07-23 10:45:53 +02:00
vdso32
s390/vdso: drop unnecessary cc-ldoption
2019-05-03 17:17:58 +02:00
vdso64
s390/vdso: drop unnecessary cc-ldoption
2019-05-03 17:17:58 +02:00
.gitignore
…
alternative.c
s390: add automatic detection of the spectre defense
2018-03-28 08:38:24 +02:00
asm-offsets.c
s390: prevent leaking kernel address in BEAR
2020-04-13 10:48:06 +02:00
audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
audit.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
base.S
s390/base: remove unused s390_base_mcck_handler
2019-09-03 13:53:56 +02:00
cache.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_audit.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_linux.c
s390: use generic UID16 implementation
2019-01-18 09:33:18 +01:00
compat_linux.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_ptrace.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_signal.c
signal: Remove task parameter from force_sig
2019-05-27 09:36:28 -05:00
cpcmd.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
crash_dump.c
memblock: memblock_phys_alloc(): don't panic
2019-03-12 10:04:01 -07:00
debug.c
docs: s390: unify and update s390dbf kdocs at debug.c
2019-07-05 13:42:22 +02:00
diag.c
s390/ftrace: fix potential crashes when switching tracers
2020-05-02 08:48:44 +02:00
dis.c
s390/disassembler: don't hide instruction addresses
2019-12-31 16:45:23 +01:00
dumpstack.c
s390/unwind: remove stack recursion warning
2019-08-06 13:58:35 +02:00
early_printk.c
s390/sclp: avoid using strncmp with hardcoded length
2019-08-29 15:34:58 +02:00
early.c
s390: clean .bss before running uncompressed kernel
2019-08-21 12:58:52 +02:00
ebcdic.c
s390: ebcdic: convert comments to UTF-8
2018-08-23 18:48:43 -07:00
entry.h
PM: hibernate: powerpc: Expose pfn_is_nosave() prototype
2019-06-14 10:48:56 +02:00
entry.S
s390/ptrace: pass invalid syscall numbers to tracing
2020-06-30 15:37:04 -04:00
fpu.c
s390: correct some inline assembly constraints
2019-04-17 10:40:57 +02:00
ftrace.c
s390/ftrace: use HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
2019-05-02 13:54:11 +02:00
guarded_storage.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-13 11:47:01 -08:00
head64.S
Merge tag 's390-5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2019-09-17 14:04:43 -07:00
idle.c
s390/idle: fix cpu idle time calculation
2019-10-31 17:26:48 +01:00
ima_arch.c
s390/kexec_file: Disable kexec_load when IPLed secure
2019-04-29 10:44:03 +02:00
ipl_vmparm.c
s390/ipl: provide uapi header for list directed IPL
2019-04-26 12:34:05 +02:00
ipl.c
s390/protvirt: avoid memory sharing for diag 308 set/store
2019-08-06 13:58:34 +02:00
irq.c
s390/unwind: introduce stack unwind API
2019-05-02 13:54:11 +02:00
jump_label.c
s390/jump_label: remove unused structure definition
2019-06-07 10:10:10 +02:00
kdebugfs.c
s390: no need to check return value of debugfs_create functions
2019-01-28 15:58:55 +01:00
kexec_elf.c
kexec: Fix file verification on S390
2019-09-10 13:27:51 +01:00
kexec_image.c
kexec_file: split KEXEC_VERIFY_SIG into KEXEC_SIG and KEXEC_SIG_FORCE
2019-08-19 21:54:15 -07:00
kprobes.c
s390/kernel: introduce .dma sections
2019-04-29 10:47:10 +02:00
lgr.c
s390: kernel: add SPDX identifiers to the remaining files
2017-11-24 15:37:12 +01:00
machine_kexec_file.c
s390/kexec_file: fix initrd location for kdump kernel
2020-05-27 17:46:49 +02:00
machine_kexec_reloc.c
s390/kaslr: add support for R_390_JMP_SLOT relocation type
2020-05-27 17:46:47 +02:00
machine_kexec.c
s390: disable preemption when switching to nodat stack with CALL_ON_STACK
2020-01-04 19:18:31 +01:00
Makefile
s390: clean .bss before running uncompressed kernel
2019-08-21 12:58:52 +02:00
mcount.S
s390/ftrace: save traced function caller
2020-06-07 13:18:49 +02:00
module.c
s390/module: avoid using strncmp with hardcoded length
2019-08-29 15:34:57 +02:00
nmi.c
s390: simplify disabled_wait
2019-05-02 13:54:11 +02:00
nospec-branch.c
Merge tag 's390-5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2019-05-06 16:42:54 -07:00
nospec-sysfs.c
s390: Convert IS_ENABLED uses to __is_defined
2019-04-11 13:36:53 +02:00
os_info.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
perf_cpum_cf_common.c
s390/cpum_cf: move common functions into a separate file
2019-02-22 09:19:55 +01:00
perf_cpum_cf_diag.c
s390/cpumf: Adjust registration of s390 PMU device drivers
2019-12-31 16:45:43 +01:00
perf_cpum_cf_events.c
s390/cpumf: Add extended counter set definitions for model 8561 and 8562
2019-07-11 20:40:01 +02:00
perf_cpum_cf.c
s390/cpumf: Adjust registration of s390 PMU device drivers
2019-12-31 16:45:43 +01:00
perf_cpum_sf.c
s390/cpum_sf: Fix wrong page count in error message
2020-04-23 10:36:35 +02:00
perf_event.c
s390: add error handling to perf_callchain_kernel
2019-12-31 16:44:30 +01:00
perf_regs.c
s390/perf: fix gcc 8 array-bounds warning
2018-07-02 11:24:54 +02:00
pgm_check.S
s390/kernel: convert SYSCALL and PGM_CHECK handlers to .quad
2019-04-29 10:47:10 +02:00
process.c
s390: prevent leaking kernel address in BEAR
2020-04-13 10:48:06 +02:00
processor.c
s390/cpuinfo: fix wrong output when CPU0 is offline
2020-04-23 10:36:33 +02:00
ptrace.c
s390/ptrace: fix setting syscall number
2020-06-30 15:37:04 -04:00
reipl.S
s390: add missing ENDPROC statements to assembler functions
2019-05-02 13:54:11 +02:00
relocate_kernel.S
s390: add missing ENDPROC statements to assembler functions
2019-05-02 13:54:11 +02:00
runtime_instr.c
s390/runtime_instrumentation: re-add signum system call parameter
2018-02-05 07:34:50 +01:00
setup.c
s390: prevent leaking kernel address in BEAR
2020-04-13 10:48:06 +02:00
signal.c
signal: Remove task parameter from force_sig
2019-05-27 09:36:28 -05:00
smp.c
s390/ftrace: fix potential crashes when switching tracers
2020-05-02 08:48:44 +02:00
stacktrace.c
s390/stacktrace: use common arch_stack_walk infrastructure
2019-08-21 12:58:53 +02:00
sthyi.c
s390/sthyi: Fix machine name validity indication
2018-10-15 12:17:00 +02:00
suspend.c
s390: unify linker symbols usage
2018-02-27 08:05:23 +01:00
swsusp.S
s390: enforce CONFIG_SMP
2019-06-07 10:09:37 +02:00
sys_s390.c
s390: autogenerate compat syscall wrappers
2019-01-18 09:33:19 +01:00
sysinfo.c
s390: no need to check return value of debugfs_create functions
2019-01-28 15:58:55 +01:00
time.c
s390/time: Remove read_boot_clock64()
2018-07-20 00:02:41 +02:00
topology.c
s390/topology: avoid firing events before kobjs are created
2019-09-23 23:27:52 +02:00
trace.c
s390/ftrace: fix potential crashes when switching tracers
2020-05-02 08:48:44 +02:00
traps.c
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2019-07-08 21:48:15 -07:00
unwind_bc.c
s390/unwind: filter out unreliable bogus %r14
2020-01-04 19:18:29 +01:00
uprobes.c
s390/uprobes: implement arch_uretprobe_is_alive()
2018-04-23 07:57:16 +02:00
vdso.c
Merge tag 's390-5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2019-09-17 14:04:43 -07:00
vmlinux.lds.S
s390: put _stext and _etext into .text section
2019-08-06 13:58:35 +02:00
vtime.c
s390: correct some inline assembly constraints
2019-04-17 10:40:57 +02:00