diff options
| author | Michael Ellerman <michael@ellerman.id.au> | 2007-09-19 14:38:12 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-09-19 15:12:18 +1000 |
| commit | c1a72173ab156306666cb531f891f32e4e21d592 (patch) | |
| tree | 0bab92498bec28507bcc12e88434ce408e90318d /arch/powerpc/platforms | |
| parent | 59000b53c7ea07531018b6cf1f5fcd21e881867a (diff) | |
[POWERPC] spufs: Don't return -ENOSYS as extra notes size if spufs is not loaded
Because the SPU coredump code might be built as part of a module (spufs),
we have a stub which is called by the coredump code, this routine then calls
into spufs if it's loaded.
Unfortunately the stub returns -ENOSYS if spufs is not loaded, which is
interpreted by the coredump code as an extra note size of -38 bytes. This
leads to a corrupt core dump.
If spufs is not loaded there will be no SPU ELF notes to write, and so the
extra notes size will be == 0.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/cell/spu_coredump.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/cell/spu_coredump.c b/arch/powerpc/platforms/cell/spu_coredump.c index 4fd37ff1e21..656a8c52cd3 100644 --- a/arch/powerpc/platforms/cell/spu_coredump.c +++ b/arch/powerpc/platforms/cell/spu_coredump.c @@ -31,15 +31,19 @@ static DEFINE_MUTEX(spu_coredump_mutex); int arch_notes_size(void) { - long ret; + int ret; - ret = -ENOSYS; mutex_lock(&spu_coredump_mutex); + if (spu_coredump_calls && try_module_get(spu_coredump_calls->owner)) { ret = spu_coredump_calls->arch_notes_size(); module_put(spu_coredump_calls->owner); + } else { + ret = 0; } + mutex_unlock(&spu_coredump_mutex); + return ret; } |