diff options
| author | Anton Blanchard <anton@samba.org> | 2011-08-10 20:44:24 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-09-20 15:53:23 +1000 |
| commit | a11940978bd598e65996b4f807cf4904793f7025 (patch) | |
| tree | 95a62b555abb28b0334f8eea8c856a3c0c0c5991 /arch/frv | |
| parent | dfbe93a222e74b6f96ad84eff2b04a0f864fac65 (diff) | |
powerpc: Fix oops when echoing bad values to /sys/devices/system/memory/probe
If we echo an address the hypervisor doesn't like to
/sys/devices/system/memory/probe we oops the box:
# echo 0x10000000000 > /sys/devices/system/memory/probe
kernel BUG at arch/powerpc/mm/hash_utils_64.c:541!
The backtrace is:
create_section_mapping
arch_add_memory
add_memory
memory_probe_store
sysdev_class_store
sysfs_write_file
vfs_write
SyS_write
In create_section_mapping we BUG if htab_bolt_mapping returned
an error. A better approach is to return an error which will
propagate back to userspace.
Rerunning the test with this patch applied:
# echo 0x10000000000 > /sys/devices/system/memory/probe
-bash: echo: write error: Invalid argument
Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: stable@kernel.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/frv')
0 files changed, 0 insertions, 0 deletions