diff options
| author | Uladzislau Rezki (Sony) <urezki@gmail.com> | 2022-12-22 20:00:22 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-01-18 17:12:48 -0800 |
| commit | 14687619e1122d71b2ed70e1afa6bc352e629e85 (patch) | |
| tree | 3bf0412778379ed4f562ccd1c416eefe5b90af50 /mm/vmalloc.c | |
| parent | edd898181e2f6f0969c08e1dfe2b7cdf902b9b33 (diff) | |
mm: vmalloc: replace BUG_ON() by WARN_ON_ONCE()
Currently a vm_unmap_ram() functions triggers a BUG() if an area is not
found. Replace it by the WARN_ON_ONCE() error message and keep machine
alive instead of stopping it.
The worst case is a memory leaking.
Link: https://lkml.kernel.org/r/20221222190022.134380-3-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Baoquan He <bhe@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sony.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/vmalloc.c')
| -rw-r--r-- | mm/vmalloc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 476ccbffb208..428e0bee5c9c 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -2253,7 +2253,9 @@ void vm_unmap_ram(const void *mem, unsigned int count) } va = find_unlink_vmap_area(addr); - BUG_ON(!va); + if (WARN_ON_ONCE(!va)) + return; + debug_check_no_locks_freed((void *)va->va_start, (va->va_end - va->va_start)); free_unmap_vmap_area(va); |