b70842df77
Running a probe on s390 with a probe address that is not 4 byte aligned results in a Kernel BUG. The problem is that the stura instruction used by swap_instruction requires the destination address to be 4 byte aligned. As stura only writes 4 bytes, aligning to the next 4 byte aligned address results in the breakpoint instruction being stored past the probe address. The fix is to align the address backward (to the previous 4 byte aligned address) and writing the two byte breakpoint instruction in the appropriate bytes. Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: David Wilder <dwilder@us.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> |
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| .. | ||
| Makefile | ||
| asm-offsets.c | ||
| audit.c | ||
| base.S | ||
| binfmt_elf32.c | ||
| bitmap.S | ||
| compat_audit.c | ||
| compat_exec_domain.c | ||
| compat_linux.c | ||
| compat_linux.h | ||
| compat_ptrace.h | ||
| compat_signal.c | ||
| compat_wrapper.S | ||
| cpcmd.c | ||
| crash.c | ||
| debug.c | ||
| early.c | ||
| ebcdic.c | ||
| entry.S | ||
| entry64.S | ||
| head.S | ||
| head31.S | ||
| head64.S | ||
| init_task.c | ||
| ipl.c | ||
| irq.c | ||
| kprobes.c | ||
| machine_kexec.c | ||
| module.c | ||
| process.c | ||
| ptrace.c | ||
| reipl.S | ||
| reipl64.S | ||
| relocate_kernel.S | ||
| relocate_kernel64.S | ||
| s390_ext.c | ||
| s390_ksyms.c | ||
| semaphore.c | ||
| setup.c | ||
| signal.c | ||
| smp.c | ||
| stacktrace.c | ||
| sys_s390.c | ||
| syscalls.S | ||
| time.c | ||
| traps.c | ||
| vmlinux.lds.S | ||
| vtime.c | ||