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| author | Jason Wessel <jason.wessel@windriver.com> | 2015-01-08 15:46:55 -0600 |
|---|---|---|
| committer | Jason Wessel <jason.wessel@windriver.com> | 2015-02-19 12:39:02 -0600 |
| commit | df0036d117e6c9df36324e517728e33543065f9a (patch) | |
| tree | c1b944a4cbbe24ec31103ee2e229a17c561293ce /kernel/debug | |
| parent | 146755923262037fc4c54abc28c04b1103f3cc51 (diff) | |
| download | lwn-df0036d117e6c9df36324e517728e33543065f9a.tar.gz lwn-df0036d117e6c9df36324e517728e33543065f9a.zip | |
kdb: Fix off by one error in kdb_cpu()
There was a follow on replacement patch against the prior
"kgdb: Timeout if secondary CPUs ignore the roundup".
See: https://lkml.org/lkml/2015/1/7/442
This patch is the delta vs the patch that was committed upstream:
* Fix an off-by-one error in kdb_cpu().
* Replace NR_CPUS with CONFIG_NR_CPUS to tell checkpatch that we
really want a static limit.
* Removed the "KGDB: " prefix from the pr_crit() in debug_core.c
(kgdb-next contains a patch which introduced pr_fmt() to this file
to the tag will now be applied automatically).
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Diffstat (limited to 'kernel/debug')
| -rw-r--r-- | kernel/debug/debug_core.c | 2 | ||||
| -rw-r--r-- | kernel/debug/kdb/kdb_main.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c index 07ce18ca71e0..ac5c0f9c7a20 100644 --- a/kernel/debug/debug_core.c +++ b/kernel/debug/debug_core.c @@ -604,7 +604,7 @@ return_normal: online_cpus) cpu_relax(); if (!time_left) - pr_crit("KGDB: Timed out waiting for secondary CPUs.\n"); + pr_crit("Timed out waiting for secondary CPUs.\n"); /* * At this point the primary processor is completely diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c index c6d2c0b1565d..60f6bb817f70 100644 --- a/kernel/debug/kdb/kdb_main.c +++ b/kernel/debug/kdb/kdb_main.c @@ -2256,7 +2256,7 @@ static int kdb_cpu(int argc, const char **argv) /* * Validate cpunum */ - if ((cpunum > NR_CPUS) || !kgdb_info[cpunum].enter_kgdb) + if ((cpunum >= CONFIG_NR_CPUS) || !kgdb_info[cpunum].enter_kgdb) return KDB_BADCPUNUM; dbg_switch_cpu = cpunum; |