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| author | Jason Wessel <jason.wessel@windriver.com> | 2010-10-29 22:14:41 +0400 |
|---|---|---|
| committer | Jason Wessel <jason.wessel@windriver.com> | 2010-10-29 22:14:41 +0400 |
| commit | 578bd4dfcda63d2ef15f025f1d5d55c0e56b9660 (patch) | |
| tree | 1c8e62b55dff82b64a0e4148134074cf4d8ffdae | |
| parent | 834b2964b7ab047610da038e42d61dc8dac6339a (diff) | |
| download | linux-578bd4dfcda63d2ef15f025f1d5d55c0e56b9660.tar.xz | |
kdb: Fix early debugging crash regression
The kdb_current legally be equal to NULL in the early boot of the x86
arch. The problem pcan be observed by booting with the kernel arguments:
earlyprintk=vga ekgdboc=kbd kgdbwait
The kdb shell will oops on entry and recursively fault because it
cannot get past the final stage of shell initialization.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
| -rw-r--r-- | kernel/debug/kdb/kdb_main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c index 9755ac05e446..37755d621924 100644 --- a/kernel/debug/kdb/kdb_main.c +++ b/kernel/debug/kdb/kdb_main.c @@ -1127,7 +1127,7 @@ static int kdb_local(kdb_reason_t reason, int error, struct pt_regs *regs, /* special case below */ } else { kdb_printf("\nEntering kdb (current=0x%p, pid %d) ", - kdb_current, kdb_current->pid); + kdb_current, kdb_current ? kdb_current->pid : 0); #if defined(CONFIG_SMP) kdb_printf("on processor %d ", raw_smp_processor_id()); #endif |