From: kernel test robot <lkp@intel.com>
To: Bart Van Assche <bvanassche@acm.org>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev
Subject: [bvanassche:write-pipelining 9/19] drivers/scsi/sd_test.c:34:13: warning: stack frame size (2688) exceeds limit (1024) in 'test_sd_cmp_sector'
Date: Sat, 18 Nov 2023 18:48:43 +0800 [thread overview]
Message-ID: <202311181859.GE5EFaE5-lkp@intel.com> (raw)
tree: https://github.com/bvanassche/linux write-pipelining
head: f409a1d5e3ab8709f7ee3147de97200d455003e8
commit: 53da08715927f5be1d68ad383bb7a419c834ea47 [9/19] scsi: sd: Add a unit test for sd_cmp_sector()
config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20231118/202311181859.GE5EFaE5-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231118/202311181859.GE5EFaE5-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311181859.GE5EFaE5-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/scsi/sd.c:40:
In file included from include/linux/bio.h:10:
In file included from include/linux/blk_types.h:10:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:12:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:337:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
547 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from drivers/scsi/sd.c:40:
In file included from include/linux/bio.h:10:
In file included from include/linux/blk_types.h:10:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:12:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:337:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from drivers/scsi/sd.c:40:
In file included from include/linux/bio.h:10:
In file included from include/linux/blk_types.h:10:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:12:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:337:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
584 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
In file included from drivers/scsi/sd.c:4146:
>> drivers/scsi/sd_test.c:34:13: warning: stack frame size (2688) exceeds limit (1024) in 'test_sd_cmp_sector' [-Wframe-larger-than]
34 | static void test_sd_cmp_sector(struct kunit *test)
| ^
7 warnings generated.
vim +/test_sd_cmp_sector +34 drivers/scsi/sd_test.c
30
31 /*
32 * Verify that sd_cmp_sector() does what it is expected to do.
33 */
> 34 static void test_sd_cmp_sector(struct kunit *test)
35 {
36 struct request_queue *q1 __free(kfree) =
37 ALLOC_Q(.limits.use_zone_write_lock = true);
38 struct request_queue *q2 __free(kfree) =
39 ALLOC_Q(.limits.use_zone_write_lock = false);
40 struct rq_and_cmd *cmd1 __free(kfree) = ALLOC_CMD(.rq = {
41 .q = q1,
42 .__sector = 7,
43 });
44 struct rq_and_cmd *cmd2 __free(kfree) = ALLOC_CMD(.rq = {
45 .q = q1,
46 .__sector = 5,
47 });
48 struct rq_and_cmd *cmd3 __free(kfree) = ALLOC_CMD(.rq = {
49 .q = q2,
50 .__sector = 7,
51 });
52 struct rq_and_cmd *cmd4 __free(kfree) = ALLOC_CMD(.rq = {
53 .q = q2,
54 .__sector = 5,
55 });
56 LIST_HEAD(cmd_list);
57
58 list_add_tail(&cmd1->cmd.eh_entry, &cmd_list);
59 list_add_tail(&cmd2->cmd.eh_entry, &cmd_list);
60 list_add_tail(&cmd3->cmd.eh_entry, &cmd_list);
61 list_add_tail(&cmd4->cmd.eh_entry, &cmd_list);
62 KUNIT_EXPECT_EQ(test, list_count_nodes(&cmd_list), 4);
63 list_sort(NULL, &cmd_list, sd_cmp_sector);
64 KUNIT_EXPECT_EQ(test, list_count_nodes(&cmd_list), 4);
65 KUNIT_EXPECT_PTR_EQ(test, cmd_list.next, &cmd4->cmd.eh_entry);
66 KUNIT_EXPECT_PTR_EQ(test, cmd_list.next->next, &cmd3->cmd.eh_entry);
67 KUNIT_EXPECT_PTR_EQ(test, cmd_list.next->next->next,
68 &cmd1->cmd.eh_entry);
69 KUNIT_EXPECT_PTR_EQ(test, cmd_list.next->next->next->next,
70 &cmd2->cmd.eh_entry);
71 }
72
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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