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| author | Joel Fernandes (Google) <joel@joelfernandes.org> | 2023-09-04 18:08:04 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-09-05 10:13:45 -0700 |
| commit | 0818e739b5c061b0251c30152380600fb9b84c0c (patch) | |
| tree | e46a53aed8e55375d0fe8b04491a89966b57b765 /mm/util.c | |
| parent | 7f33105cdd59a99d068d3d147723a865d10e2260 (diff) | |
| download | linux-0818e739b5c061b0251c30152380600fb9b84c0c.tar.gz linux-0818e739b5c061b0251c30152380600fb9b84c0c.tar.bz2 linux-0818e739b5c061b0251c30152380600fb9b84c0c.zip | |
mm/vmalloc: add a safer version of find_vm_area() for debug
It is unsafe to dump vmalloc area information when trying to do so from
some contexts. Add a safer trylock version of the same function to do a
best-effort VMA finding and use it from vmalloc_dump_obj().
[applied test robot feedback on unused function fix.]
[applied Uladzislau feedback on locking.]
Link: https://lkml.kernel.org/r/20230904180806.1002832-1-joel@joelfernandes.org
Fixes: 98f180837a89 ("mm: Make mem_dump_obj() handle vmalloc() memory")
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reported-by: Zhen Lei <thunder.leizhen@huaweicloud.com>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Zqiang <qiang.zhang1211@gmail.com>
Cc: <stable@vger.kernel.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/util.c')
0 files changed, 0 insertions, 0 deletions