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50bec4ce5d
linux/arch/s390/kernel
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Heiko Carstens 50bec4ce5d [S390] ftrace: fix kernel stack backchain walking 
With CONFIG_IRQSOFF_TRACER the trace_hardirqs_off() function includes
a call to __builtin_return_address(1). But we calltrace_hardirqs_off()
from early entry code. There we have just a single stack frame.
So this results in a kernel stack backchain walk that would walk beyond
the kernel stack. Following the NULL terminated backchain this results
in a lowcore read access.

To fix this we simply call trace_hardirqs_off_caller() and pass the
current instruction pointer.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-11-14 18:18:53 +01:00
..
asm-offsets.c
audit.c
audit.h
base.S
bitmap.S
compat_audit.c
compat_exec_domain.c
compat_linux.c compat: generic compat get/settimeofday 2008-10-16 11:21:33 -07:00
compat_linux.h compat: generic compat get/settimeofday 2008-10-16 11:21:33 -07:00
compat_ptrace.h [S390] CVE-2008-1514: prevent ptrace padding area read/write in 31-bit mode 2008-09-09 12:39:06 +02:00
compat_signal.c
compat_wrapper.S compat: generic compat get/settimeofday 2008-10-16 11:21:33 -07:00
cpcmd.c
crash.c
debug.c [S390] Cleanup s390 debug feature print messages. 2008-07-14 10:02:22 +02:00
diag.c
dis.c [S390] disassembler: fix idte instruction format. 2008-05-30 10:03:36 +02:00
early.c [S390] Remove P390 support. 2008-07-14 10:02:25 +02:00
ebcdic.c
entry64.S [S390] ftrace: fix kernel stack backchain walking 2008-11-14 18:18:53 +01:00
entry.h
entry.S [S390] ftrace: fix kernel stack backchain walking 2008-11-14 18:18:53 +01:00
head31.S [S390] Convert machine feature detection code to C. 2008-04-30 13:38:47 +02:00
head64.S [S390] System z large page support. 2008-04-30 13:38:47 +02:00
head.S
init_task.c [PATCH] take init_files to fs/file.c 2008-05-16 17:22:20 -04:00
ipl.c [S390] ipl: Reboot from alternate device does not work when booting from file 2008-08-01 16:39:30 +02:00
irq.c [S390] show_interrupts: prevent cpu hotplug when walking cpu_online_map. 2008-05-15 16:52:41 +02:00
kprobes.c stop_machine: Wean existing callers off stop_machine_run() 2008-07-28 12:16:31 +10:00
machine_kexec.c [S390] Cleanup kprobes printk messages. 2008-07-14 10:02:24 +02:00
Makefile [S390] Move memory detection code to own file. 2008-07-14 10:02:17 +02:00
mem_detect.c [S390] Remove diag 0x260 call from memory detection. 2008-08-01 16:39:34 +02:00
module.c
process.c [S390] ftrace: disable tracing on idle psw 2008-11-14 18:18:53 +01:00
ptrace.c [S390] ptrace changes 2008-10-10 21:33:57 +02:00
reipl64.S
reipl.S
relocate_kernel64.S
relocate_kernel.S
s390_ext.c
s390_ksyms.c
setup.c [S390] Fix range for add_active_range() in setup_memory() 2008-11-14 18:18:51 +01:00
signal.c [S390] ptrace changes 2008-10-10 21:33:57 +02:00
smp.c [S390] Fix sysdev class file creation. 2008-10-28 11:12:03 +01:00
stacktrace.c [S390] Fix stacktrace compile bug. 2008-07-17 17:22:09 +02:00
sys_s390.c unified (weak) sys_pipe implementation 2008-05-03 13:50:33 -07:00
syscalls.S compat: generic compat get/settimeofday 2008-10-16 11:21:33 -07:00
time.c [S390] fix initialization of stp 2008-10-10 21:34:02 +02:00
topology.c S390 topology: don't use kthread() for arch_reinit_sched_domains() 2008-07-25 10:53:40 -07:00
traps.c
vmlinux.lds.S [S390] Fix linker script. 2008-08-25 18:15:01 +02:00
vtime.c [S390] Cleanup vtime printk messages. 2008-07-14 10:02:18 +02:00