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Date: Wed, 22 Jun 2022 05:45:53 +0800
From: kernel test robot <lkp@...el.com>
To: Koby Elbaz <kelbaz@...ana.ai>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org, Oded Gabbay <ogabbay@...nel.org>
Subject: [ogabbay:habanalabs-next 17/27]
drivers/misc/habanalabs/gaudi/gaudi.c:7389:14: warning: variable 'qid_base'
is used uninitialized whenever 'if' condition is false
tree: https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git habanalabs-next
head: 6b6ead0677a7a86645d47f473fde6c13acf04c0f
commit: ae1380530e8c3349fac2e54e4cade040d7b43025 [17/27] habanalabs/gaudi: fix incorrect MME offset calculation
config: riscv-randconfig-r006-20220619 (https://download.01.org/0day-ci/archive/20220622/202206220559.zHr8bBNF-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project af6d2a0b6825e71965f3e2701a63c239fa0ad70f)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git/commit/?id=ae1380530e8c3349fac2e54e4cade040d7b43025
git remote add ogabbay https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git
git fetch --no-tags ogabbay habanalabs-next
git checkout ae1380530e8c3349fac2e54e4cade040d7b43025
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/misc/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
In file included from drivers/misc/habanalabs/gaudi/gaudi.c:8:
In file included from drivers/misc/habanalabs/gaudi/gaudiP.h:12:
In file included from drivers/misc/habanalabs/gaudi/../common/habanalabs.h:11:
In file included from drivers/misc/habanalabs/gaudi/../common/../include/common/cpucp_if.h:12:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/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/riscv/include/asm/io.h:136:
include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
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'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
In file included from drivers/misc/habanalabs/gaudi/gaudi.c:8:
In file included from drivers/misc/habanalabs/gaudi/gaudiP.h:12:
In file included from drivers/misc/habanalabs/gaudi/../common/habanalabs.h:11:
In file included from drivers/misc/habanalabs/gaudi/../common/../include/common/cpucp_if.h:12:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/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/riscv/include/asm/io.h:136:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
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'
#define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
^
In file included from drivers/misc/habanalabs/gaudi/gaudi.c:8:
In file included from drivers/misc/habanalabs/gaudi/gaudiP.h:12:
In file included from drivers/misc/habanalabs/gaudi/../common/habanalabs.h:11:
In file included from drivers/misc/habanalabs/gaudi/../common/../include/common/cpucp_if.h:12:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/riscv/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/riscv/include/asm/io.h:136:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:1024:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
~~~~~~~~~~ ^
>> drivers/misc/habanalabs/gaudi/gaudi.c:7389:14: warning: variable 'qid_base' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
} else if (event_type == GAUDI_EVENT_MME2_QM) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/gaudi/gaudi.c:7459:55: note: uninitialized use occurs here
gaudi_handle_qman_err_generic(hdev, desc, qman_base, qid_base, event_mask);
^~~~~~~~
drivers/misc/habanalabs/gaudi/gaudi.c:7389:10: note: remove the 'if' if its condition is always true
} else if (event_type == GAUDI_EVENT_MME2_QM) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/gaudi/gaudi.c:7369:14: note: initialize the variable 'qid_base' to silence this warning
u32 qid_base;
^
= 0
>> drivers/misc/habanalabs/gaudi/gaudi.c:7389:14: warning: variable 'index' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
} else if (event_type == GAUDI_EVENT_MME2_QM) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/gaudi/gaudi.c:7393:32: note: uninitialized use occurs here
qman_base = mmMME0_QM_BASE + index * MME_QMAN_OFFSET;
^~~~~
drivers/misc/habanalabs/gaudi/gaudi.c:7389:10: note: remove the 'if' if its condition is always true
} else if (event_type == GAUDI_EVENT_MME2_QM) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/gaudi/gaudi.c:7370:10: note: initialize the variable 'index' to silence this warning
u8 index;
^
= '\0'
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
error: A dwo section may not contain relocations
fatal error: too many errors emitted, stopping now [-ferror-limit=]
9 warnings and 20 errors generated.
Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for DRM_TTM
Depends on HAS_IOMEM && DRM && MMU
Selected by
- DRM_TTM_HELPER && HAS_IOMEM && DRM
- DRM_HISI_HIBMC && HAS_IOMEM && DRM && PCI && (ARM64 || COMPILE_TEST
vim +7389 drivers/misc/habanalabs/gaudi/gaudi.c
7364
7365 static void gaudi_handle_qman_err(struct hl_device *hdev, u16 event_type, u64 *event_mask)
7366 {
7367 u64 qman_base;
7368 char desc[32];
7369 u32 qid_base;
7370 u8 index;
7371
7372 switch (event_type) {
7373 case GAUDI_EVENT_TPC0_QM ... GAUDI_EVENT_TPC7_QM:
7374 /* In TPC QM event, notify on TPC assertion. While there isn't
7375 * a specific event for assertion yet, the FW generates QM event.
7376 * The SW upper layer will inspect an internal mapped area to indicate
7377 * if the event is a tpc assertion or tpc QM.
7378 */
7379 *event_mask |= HL_NOTIFIER_EVENT_TPC_ASSERT;
7380 index = event_type - GAUDI_EVENT_TPC0_QM;
7381 qid_base = GAUDI_QUEUE_ID_TPC_0_0 + index * QMAN_STREAMS;
7382 qman_base = mmTPC0_QM_BASE + index * TPC_QMAN_OFFSET;
7383 snprintf(desc, ARRAY_SIZE(desc), "%s%d", "TPC_QM", index);
7384 break;
7385 case GAUDI_EVENT_MME0_QM ... GAUDI_EVENT_MME2_QM:
7386 if (event_type == GAUDI_EVENT_MME0_QM) {
7387 index = 0;
7388 qid_base = GAUDI_QUEUE_ID_MME_0_0;
> 7389 } else if (event_type == GAUDI_EVENT_MME2_QM) {
7390 index = 2;
7391 qid_base = GAUDI_QUEUE_ID_MME_1_0;
7392 }
7393 qman_base = mmMME0_QM_BASE + index * MME_QMAN_OFFSET;
7394 snprintf(desc, ARRAY_SIZE(desc), "%s%d", "MME_QM", index);
7395 break;
7396 case GAUDI_EVENT_DMA0_QM ... GAUDI_EVENT_DMA7_QM:
7397 index = event_type - GAUDI_EVENT_DMA0_QM;
7398 qid_base = GAUDI_QUEUE_ID_DMA_0_0 + index * QMAN_STREAMS;
7399 /* skip GAUDI_QUEUE_ID_CPU_PQ if necessary */
7400 if (index > 1)
7401 qid_base++;
7402 qman_base = mmDMA0_QM_BASE + index * DMA_QMAN_OFFSET;
7403 snprintf(desc, ARRAY_SIZE(desc), "%s%d", "DMA_QM", index);
7404 break;
7405 case GAUDI_EVENT_NIC0_QM0:
7406 qid_base = GAUDI_QUEUE_ID_NIC_0_0;
7407 qman_base = mmNIC0_QM0_BASE;
7408 snprintf(desc, ARRAY_SIZE(desc), "NIC0_QM0");
7409 break;
7410 case GAUDI_EVENT_NIC0_QM1:
7411 qid_base = GAUDI_QUEUE_ID_NIC_1_0;
7412 qman_base = mmNIC0_QM1_BASE;
7413 snprintf(desc, ARRAY_SIZE(desc), "NIC0_QM1");
7414 break;
7415 case GAUDI_EVENT_NIC1_QM0:
7416 qid_base = GAUDI_QUEUE_ID_NIC_2_0;
7417 qman_base = mmNIC1_QM0_BASE;
7418 snprintf(desc, ARRAY_SIZE(desc), "NIC1_QM0");
7419 break;
7420 case GAUDI_EVENT_NIC1_QM1:
7421 qid_base = GAUDI_QUEUE_ID_NIC_3_0;
7422 qman_base = mmNIC1_QM1_BASE;
7423 snprintf(desc, ARRAY_SIZE(desc), "NIC1_QM1");
7424 break;
7425 case GAUDI_EVENT_NIC2_QM0:
7426 qid_base = GAUDI_QUEUE_ID_NIC_4_0;
7427 qman_base = mmNIC2_QM0_BASE;
7428 snprintf(desc, ARRAY_SIZE(desc), "NIC2_QM0");
7429 break;
7430 case GAUDI_EVENT_NIC2_QM1:
7431 qid_base = GAUDI_QUEUE_ID_NIC_5_0;
7432 qman_base = mmNIC2_QM1_BASE;
7433 snprintf(desc, ARRAY_SIZE(desc), "NIC2_QM1");
7434 break;
7435 case GAUDI_EVENT_NIC3_QM0:
7436 qid_base = GAUDI_QUEUE_ID_NIC_6_0;
7437 qman_base = mmNIC3_QM0_BASE;
7438 snprintf(desc, ARRAY_SIZE(desc), "NIC3_QM0");
7439 break;
7440 case GAUDI_EVENT_NIC3_QM1:
7441 qid_base = GAUDI_QUEUE_ID_NIC_7_0;
7442 qman_base = mmNIC3_QM1_BASE;
7443 snprintf(desc, ARRAY_SIZE(desc), "NIC3_QM1");
7444 break;
7445 case GAUDI_EVENT_NIC4_QM0:
7446 qid_base = GAUDI_QUEUE_ID_NIC_8_0;
7447 qman_base = mmNIC4_QM0_BASE;
7448 snprintf(desc, ARRAY_SIZE(desc), "NIC4_QM0");
7449 break;
7450 case GAUDI_EVENT_NIC4_QM1:
7451 qid_base = GAUDI_QUEUE_ID_NIC_9_0;
7452 qman_base = mmNIC4_QM1_BASE;
7453 snprintf(desc, ARRAY_SIZE(desc), "NIC4_QM1");
7454 break;
7455 default:
7456 return;
7457 }
7458
7459 gaudi_handle_qman_err_generic(hdev, desc, qman_base, qid_base, event_mask);
7460 }
7461
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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