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| author | Heiko Carstens <hca@linux.ibm.com> | 2021-01-24 20:08:40 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2021-02-09 15:57:05 +0100 |
| commit | e1eac1947bae72eff74925b2fb82b93ded11ae6a (patch) | |
| tree | 0e256c2a8b38d168f2fda39b267194318311bed4 /arch/s390 | |
| parent | s390/vdso: simplify vdso size calculation (diff) | |
| download | linux-e1eac1947bae72eff74925b2fb82b93ded11ae6a.tar.xz linux-e1eac1947bae72eff74925b2fb82b93ded11ae6a.zip | |
s390/vdso: remove BUG_ON()
Handle allocation error gracefully and simply disable vdso instead of
leaving the system in an undefined state.
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/vdso.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c index 7075459aed51..f06791c085e7 100644 --- a/arch/s390/kernel/vdso.c +++ b/arch/s390/kernel/vdso.c @@ -175,7 +175,10 @@ static int __init vdso_init(void) /* Make sure pages are in the correct state */ vdso64_pagelist = kcalloc(vdso64_pages + 1, sizeof(struct page *), GFP_KERNEL); - BUG_ON(vdso64_pagelist == NULL); + if (!vdso64_pagelist) { + vdso_enabled = 0; + return -ENOMEM; + } for (i = 0; i < vdso64_pages - 1; i++) { struct page *pg = virt_to_page(vdso64_kbase + i*PAGE_SIZE); get_page(pg); |