Re: [PATCH v4 33/35] maple_tree: Update testing code for mas_{next,prev,walk}

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





在 2023/7/3 02:20, Geert Uytterhoeven 写道:
Hi Liam,

On Thu, May 18, 2023 at 9:37 PM Liam R. Howlett <Liam.Howlett@xxxxxxxxxx> wrote:
Now that the functions have changed the limits, update the testing of
the maple tree to test these new settings.

Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>

Thanks for your patch, which is now commit eb2e817f38cafbf7
("maple_tree: update testing code for mas_{next,prev,walk}") in

--- a/lib/test_maple_tree.c
+++ b/lib/test_maple_tree.c
@@ -2011,7 +2011,7 @@ static noinline void __init next_prev_test(struct maple_tree *mt)

         val = mas_next(&mas, ULONG_MAX);
         MT_BUG_ON(mt, val != NULL);
-       MT_BUG_ON(mt, mas.index != ULONG_MAX);
+       MT_BUG_ON(mt, mas.index != 0x7d6);

On m68k (ARAnyM):

     TEST STARTING

     BUG at next_prev_test:2014 (1)
     Pass: 3749128 Run:3749129

And after that it seems to hang[*].

After adding a debug print (thus shifting all line numbers by +1):

     next_prev_test:mas.index = 0x138e
     BUG at next_prev_test:2015 (1)

0x138e = 5006, while the expected value is 0x7d6 = 2006.
I took a look. The return value 5006 is correct while the
expected value is wrong. This is a problem with the test,
it is not compatible with 32-bit systems.

I guess converting this test to the KUnit framework would make it a
bit easier to investigate failures...

[*] Left the debug one running, and I got a few more:

     BUG at check_empty_area_window:2656 (1)
     Pass: 3754275 Run:3754277
     BUG at check_empty_area_window:2657 (1)
     Pass: 3754275 Run:3754278
     BUG at check_empty_area_window:2658 (1)
     Pass: 3754275 Run:3754279
     BUG at check_empty_area_window:2662 (1)
     Pass: 3754275 Run:3754280
     BUG at check_empty_area_window:2663 (1)
     Pass: 3754275 Run:3754281
     maple_tree: 3804518 of 3804524 tests passed

So the full test took more than 20 minutes...

         MT_BUG_ON(mt, mas.last != ULONG_MAX);

         val = mas_prev(&mas, 0);

Gr{oetje,eeting}s,

                         Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                 -- Linus Torvalds




[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux