diff options
| author | Uladzislau Rezki (Sony) <urezki@gmail.com> | 2026-03-02 14:47:39 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-04-05 23:53:12 +0300 |
| commit | 0edd78cd4d40a752dc6d1bc661ce297c40baea29 (patch) | |
| tree | c4bac5bafe6ce46372ae53b740c413f7ecf52073 | |
| parent | 7a197d346a44384a1a858a98ef03766840e561d4 (diff) | |
| download | linux-0edd78cd4d40a752dc6d1bc661ce297c40baea29.tar.xz | |
mm/vmalloc: fix incorrect size reporting on allocation failure
When __vmalloc_area_node() fails to allocate pages, the failure message
may report an incorrect allocation size, for example:
vmalloc error: size 0, failed to allocate pages, ...
This happens because the warning prints area->nr_pages * PAGE_SIZE. At
this point, area->nr_pages may be zero or partly populated thus it is not
valid.
Report the originally requested allocation size instead by using
nr_small_pages * PAGE_SIZE, which reflects the actual number of pages
being requested by user.
Link: https://lkml.kernel.org/r/20260302114740.2668450-1-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | mm/vmalloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index b2c2ed650840..634d8c782cca 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -3894,7 +3894,7 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, if (!fatal_signal_pending(current) && page_order == 0) warn_alloc(gfp_mask, NULL, "vmalloc error: size %lu, failed to allocate pages", - area->nr_pages * PAGE_SIZE); + nr_small_pages * PAGE_SIZE); goto fail; } |