diff options
| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2020-03-31 05:57:23 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-09 09:37:50 +0200 |
| commit | 8f4aa3a6de249b9ae30b3d07ef13a20cae8193d5 (patch) | |
| tree | 618f085ef37ddd19c41bd0d9e97c7951ad935e62 /arch/s390 | |
| parent | 517326aaf41e3a6c1d3a01596d5f426cfeacbec1 (diff) | |
s390/debug: avoid kernel warning on too large number of pages
[ Upstream commit 827c4913923e0b441ba07ba4cc41e01181102303 ]
When specifying insanely large debug buffers a kernel warning is
printed. The debug code does handle the error gracefully, though.
Instead of duplicating the check let us silence the warning to
avoid crashes when panic_on_warn is used.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/debug.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c index 6d321f5f101d..7184d55d87aa 100644 --- a/arch/s390/kernel/debug.c +++ b/arch/s390/kernel/debug.c @@ -198,9 +198,10 @@ static debug_entry_t ***debug_areas_alloc(int pages_per_area, int nr_areas) if (!areas) goto fail_malloc_areas; for (i = 0; i < nr_areas; i++) { + /* GFP_NOWARN to avoid user triggerable WARN, we handle fails */ areas[i] = kmalloc_array(pages_per_area, sizeof(debug_entry_t *), - GFP_KERNEL); + GFP_KERNEL | __GFP_NOWARN); if (!areas[i]) goto fail_malloc_areas2; for (j = 0; j < pages_per_area; j++) { |