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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-02-04 12:38:12 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-02-07 07:27:12 +0100 |
| commit | 8676caa4fb7fc02b2c76842a0024919d0caa4b8d (patch) | |
| tree | 63393ce7ff784216f40411496566e718f6945543 /arch/s390/kernel/topology.c | |
| parent | s390: make setup_randomness work (diff) | |
| download | linux-8676caa4fb7fc02b2c76842a0024919d0caa4b8d.tar.xz linux-8676caa4fb7fc02b2c76842a0024919d0caa4b8d.zip | |
s390/topology: correct allocation of topology information
The data stored by the STSI instruction can be up to a page in size
but the memblock_virt_alloc allocation for tl_info only specifies
16 bytes. The memory after the short allocation is overwritten
every time arch_update_cpu_topology is called.
Fixes: 8c9105802235 "s390/numa: establish cpu to node mapping early"
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/topology.c')
| -rw-r--r-- | arch/s390/kernel/topology.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index 7b2b19b0b294..2cd5f4f1013c 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -458,7 +458,7 @@ void __init topology_init_early(void) set_sched_topology(s390_topology); if (!MACHINE_HAS_TOPOLOGY) goto out; - tl_info = memblock_virt_alloc(sizeof(*tl_info), PAGE_SIZE); + tl_info = memblock_virt_alloc(PAGE_SIZE, PAGE_SIZE); info = tl_info; store_topology(info); pr_info("The CPU configuration topology of the machine is: %d %d %d %d %d %d / %d\n", |