Message ID | 20221226090609.1917788-1-d-tatianin@yandex-team.ru |
---|---|
State | New |
Headers | show |
Series | [RESEND,v2] cxgbi: move cxgbi_ddp_set_one_ppod to cxgb_ppm and remove its duplicate | expand |
Hi Daniil, https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Daniil-Tatianin/cxgbi-move-cxgbi_ddp_set_one_ppod-to-cxgb_ppm-and-remove-its-duplicate/20221226-171028 base: https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next patch link: https://lore.kernel.org/r/20221226090609.1917788-1-d-tatianin%40yandex-team.ru patch subject: [RESEND PATCH v2] cxgbi: move cxgbi_ddp_set_one_ppod to cxgb_ppm and remove its duplicate config: powerpc-randconfig-m031-20221226 compiler: powerpc-linux-gcc (GCC) 12.1.0 If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@intel.com> | Reported-by: Dan Carpenter <error27@gmail.com> smatch warnings: drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.c:571 cxgbi_ppm_set_one_ppod() error: we previously assumed 'sg_off' could be null (see line 536) vim +/sg_off +571 drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.c e775e542c914b4 Daniil Tatianin 2022-12-26 530 void e775e542c914b4 Daniil Tatianin 2022-12-26 531 cxgbi_ppm_set_one_ppod(struct cxgbi_pagepod *ppod, e775e542c914b4 Daniil Tatianin 2022-12-26 532 struct cxgbi_task_tag_info *ttinfo, e775e542c914b4 Daniil Tatianin 2022-12-26 533 struct scatterlist **sg_pp, unsigned int *sg_off) e775e542c914b4 Daniil Tatianin 2022-12-26 534 { e775e542c914b4 Daniil Tatianin 2022-12-26 535 struct scatterlist *sg = sg_pp ? *sg_pp : NULL; e775e542c914b4 Daniil Tatianin 2022-12-26 @536 unsigned int offset = sg_off ? *sg_off : 0; ^^^^^^ Check for NULL e775e542c914b4 Daniil Tatianin 2022-12-26 537 dma_addr_t addr = 0UL; e775e542c914b4 Daniil Tatianin 2022-12-26 538 unsigned int len = 0; e775e542c914b4 Daniil Tatianin 2022-12-26 539 int i; e775e542c914b4 Daniil Tatianin 2022-12-26 540 e775e542c914b4 Daniil Tatianin 2022-12-26 541 memcpy(ppod, &ttinfo->hdr, sizeof(struct cxgbi_pagepod_hdr)); e775e542c914b4 Daniil Tatianin 2022-12-26 542 e775e542c914b4 Daniil Tatianin 2022-12-26 543 if (sg) { e775e542c914b4 Daniil Tatianin 2022-12-26 544 addr = sg_dma_address(sg); e775e542c914b4 Daniil Tatianin 2022-12-26 545 len = sg_dma_len(sg); e775e542c914b4 Daniil Tatianin 2022-12-26 546 } e775e542c914b4 Daniil Tatianin 2022-12-26 547 e775e542c914b4 Daniil Tatianin 2022-12-26 548 for (i = 0; i < PPOD_PAGES_MAX; i++) { e775e542c914b4 Daniil Tatianin 2022-12-26 549 if (sg) { e775e542c914b4 Daniil Tatianin 2022-12-26 550 ppod->addr[i] = cpu_to_be64(addr + offset); e775e542c914b4 Daniil Tatianin 2022-12-26 551 offset += PAGE_SIZE; e775e542c914b4 Daniil Tatianin 2022-12-26 552 if (offset == (len + sg->offset)) { e775e542c914b4 Daniil Tatianin 2022-12-26 553 offset = 0; e775e542c914b4 Daniil Tatianin 2022-12-26 554 sg = sg_next(sg); e775e542c914b4 Daniil Tatianin 2022-12-26 555 if (sg) { e775e542c914b4 Daniil Tatianin 2022-12-26 556 addr = sg_dma_address(sg); e775e542c914b4 Daniil Tatianin 2022-12-26 557 len = sg_dma_len(sg); e775e542c914b4 Daniil Tatianin 2022-12-26 558 } e775e542c914b4 Daniil Tatianin 2022-12-26 559 } e775e542c914b4 Daniil Tatianin 2022-12-26 560 } else { e775e542c914b4 Daniil Tatianin 2022-12-26 561 ppod->addr[i] = 0ULL; e775e542c914b4 Daniil Tatianin 2022-12-26 562 } e775e542c914b4 Daniil Tatianin 2022-12-26 563 } e775e542c914b4 Daniil Tatianin 2022-12-26 564 e775e542c914b4 Daniil Tatianin 2022-12-26 565 /* e775e542c914b4 Daniil Tatianin 2022-12-26 566 * the fifth address needs to be repeated in the next ppod, so do e775e542c914b4 Daniil Tatianin 2022-12-26 567 * not move sg e775e542c914b4 Daniil Tatianin 2022-12-26 568 */ e775e542c914b4 Daniil Tatianin 2022-12-26 569 if (sg_pp) { e775e542c914b4 Daniil Tatianin 2022-12-26 570 *sg_pp = sg; e775e542c914b4 Daniil Tatianin 2022-12-26 @571 *sg_off = offset; ^^^^^^^ Unchecked dereference. e775e542c914b4 Daniil Tatianin 2022-12-26 572 } e775e542c914b4 Daniil Tatianin 2022-12-26 573 e775e542c914b4 Daniil Tatianin 2022-12-26 574 if (offset == len) { e775e542c914b4 Daniil Tatianin 2022-12-26 575 offset = 0; e775e542c914b4 Daniil Tatianin 2022-12-26 576 if (sg) { e775e542c914b4 Daniil Tatianin 2022-12-26 577 sg = sg_next(sg); e775e542c914b4 Daniil Tatianin 2022-12-26 578 if (sg) e775e542c914b4 Daniil Tatianin 2022-12-26 579 addr = sg_dma_address(sg); e775e542c914b4 Daniil Tatianin 2022-12-26 580 } e775e542c914b4 Daniil Tatianin 2022-12-26 581 } e775e542c914b4 Daniil Tatianin 2022-12-26 582 ppod->addr[i] = sg ? cpu_to_be64(addr + offset) : 0ULL; e775e542c914b4 Daniil Tatianin 2022-12-26 583 }
diff --git a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.c b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.c index 854d87e1125c..9103826b0d27 100644 --- a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.c +++ b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.c @@ -527,6 +527,62 @@ unsigned int cxgbi_tagmask_set(unsigned int ppmax) } EXPORT_SYMBOL(cxgbi_tagmask_set); +void +cxgbi_ppm_set_one_ppod(struct cxgbi_pagepod *ppod, + struct cxgbi_task_tag_info *ttinfo, + struct scatterlist **sg_pp, unsigned int *sg_off) +{ + struct scatterlist *sg = sg_pp ? *sg_pp : NULL; + unsigned int offset = sg_off ? *sg_off : 0; + dma_addr_t addr = 0UL; + unsigned int len = 0; + int i; + + memcpy(ppod, &ttinfo->hdr, sizeof(struct cxgbi_pagepod_hdr)); + + if (sg) { + addr = sg_dma_address(sg); + len = sg_dma_len(sg); + } + + for (i = 0; i < PPOD_PAGES_MAX; i++) { + if (sg) { + ppod->addr[i] = cpu_to_be64(addr + offset); + offset += PAGE_SIZE; + if (offset == (len + sg->offset)) { + offset = 0; + sg = sg_next(sg); + if (sg) { + addr = sg_dma_address(sg); + len = sg_dma_len(sg); + } + } + } else { + ppod->addr[i] = 0ULL; + } + } + + /* + * the fifth address needs to be repeated in the next ppod, so do + * not move sg + */ + if (sg_pp) { + *sg_pp = sg; + *sg_off = offset; + } + + if (offset == len) { + offset = 0; + if (sg) { + sg = sg_next(sg); + if (sg) + addr = sg_dma_address(sg); + } + } + ppod->addr[i] = sg ? cpu_to_be64(addr + offset) : 0ULL; +} +EXPORT_SYMBOL(cxgbi_ppm_set_one_ppod); + MODULE_AUTHOR("Chelsio Communications"); MODULE_DESCRIPTION("Chelsio common library"); MODULE_LICENSE("Dual BSD/GPL"); diff --git a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.h b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.h index 1b4156461ba1..f2178ee0b18a 100644 --- a/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.h +++ b/drivers/net/ethernet/chelsio/libcxgb/libcxgb_ppm.h @@ -332,4 +332,9 @@ int cxgbi_ppm_release(struct cxgbi_ppm *ppm); void cxgbi_tagmask_check(unsigned int tagmask, struct cxgbi_tag_format *); unsigned int cxgbi_tagmask_set(unsigned int ppmax); +void +cxgbi_ppm_set_one_ppod(struct cxgbi_pagepod *ppod, + struct cxgbi_task_tag_info *ttinfo, + struct scatterlist **sg_pp, unsigned int *sg_off); + #endif /*__LIBCXGB_PPM_H__*/ diff --git a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c index ff9d4287937a..0399e82362b7 100644 --- a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c +++ b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c @@ -1115,7 +1115,7 @@ static int ddp_set_map(struct cxgbi_ppm *ppm, struct cxgbi_sock *csk, req = (struct ulp_mem_io *)skb->head; ppod = (struct cxgbi_pagepod *)(req + 1); sg_off = i * PPOD_PAGES_MAX; - cxgbi_ddp_set_one_ppod(ppod, ttinfo, &sg, + cxgbi_ppm_set_one_ppod(ppod, ttinfo, &sg, &sg_off); skb->priority = CPL_PRIORITY_CONTROL; cxgb3_ofld_send(ppm->lldev, skb); diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c index c07d2e3b4bcf..1f768cc3fbfb 100644 --- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c +++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c @@ -2035,7 +2035,7 @@ static int ddp_ppod_write_idata(struct cxgbi_ppm *ppm, struct cxgbi_sock *csk, ppod = (struct cxgbi_pagepod *)(idata + 1); for (i = 0; i < npods; i++, ppod++) - cxgbi_ddp_set_one_ppod(ppod, ttinfo, sg_pp, sg_off); + cxgbi_ppm_set_one_ppod(ppod, ttinfo, sg_pp, sg_off); cxgbi_skcb_set_flag(skb, SKCBF_TX_MEM_WRITE); cxgbi_skcb_set_flag(skb, SKCBF_TX_FLAG_COMPL); diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c index af281e271f88..6a2627a73f26 100644 --- a/drivers/scsi/cxgbi/libcxgbi.c +++ b/drivers/scsi/cxgbi/libcxgbi.c @@ -1151,61 +1151,6 @@ scmd_get_params(struct scsi_cmnd *sc, struct scatterlist **sgl, /* Caution: for protection sdb, sdb->length is invalid */ } -void cxgbi_ddp_set_one_ppod(struct cxgbi_pagepod *ppod, - struct cxgbi_task_tag_info *ttinfo, - struct scatterlist **sg_pp, unsigned int *sg_off) -{ - struct scatterlist *sg = sg_pp ? *sg_pp : NULL; - unsigned int offset = sg_off ? *sg_off : 0; - dma_addr_t addr = 0UL; - unsigned int len = 0; - int i; - - memcpy(ppod, &ttinfo->hdr, sizeof(struct cxgbi_pagepod_hdr)); - - if (sg) { - addr = sg_dma_address(sg); - len = sg_dma_len(sg); - } - - for (i = 0; i < PPOD_PAGES_MAX; i++) { - if (sg) { - ppod->addr[i] = cpu_to_be64(addr + offset); - offset += PAGE_SIZE; - if (offset == (len + sg->offset)) { - offset = 0; - sg = sg_next(sg); - if (sg) { - addr = sg_dma_address(sg); - len = sg_dma_len(sg); - } - } - } else { - ppod->addr[i] = 0ULL; - } - } - - /* - * the fifth address needs to be repeated in the next ppod, so do - * not move sg - */ - if (sg_pp) { - *sg_pp = sg; - *sg_off = offset; - } - - if (offset == len) { - offset = 0; - sg = sg_next(sg); - if (sg) { - addr = sg_dma_address(sg); - len = sg_dma_len(sg); - } - } - ppod->addr[i] = sg ? cpu_to_be64(addr + offset) : 0ULL; -} -EXPORT_SYMBOL_GPL(cxgbi_ddp_set_one_ppod); - /* * APIs interacting with open-iscsi libraries */ diff --git a/drivers/scsi/cxgbi/libcxgbi.h b/drivers/scsi/cxgbi/libcxgbi.h index 3687b5c0cf90..f90e747bcb4f 100644 --- a/drivers/scsi/cxgbi/libcxgbi.h +++ b/drivers/scsi/cxgbi/libcxgbi.h @@ -636,9 +636,6 @@ int cxgbi_ddp_init(struct cxgbi_device *, unsigned int, unsigned int, unsigned int, unsigned int); int cxgbi_ddp_cleanup(struct cxgbi_device *); void cxgbi_ddp_page_size_factor(int *); -void cxgbi_ddp_set_one_ppod(struct cxgbi_pagepod *, - struct cxgbi_task_tag_info *, - struct scatterlist **sg_pp, unsigned int *sg_off); int cxgbi_ddp_ppm_setup(void **ppm_pp, struct cxgbi_device *cdev, struct cxgbi_tag_format *tformat, unsigned int iscsi_size, unsigned int llimit, diff --git a/drivers/target/iscsi/cxgbit/cxgbit_ddp.c b/drivers/target/iscsi/cxgbit/cxgbit_ddp.c index 17fd0d8cc490..fe29f4962058 100644 --- a/drivers/target/iscsi/cxgbit/cxgbit_ddp.c +++ b/drivers/target/iscsi/cxgbit/cxgbit_ddp.c @@ -5,61 +5,6 @@ #include "cxgbit.h" -static void -cxgbit_set_one_ppod(struct cxgbi_pagepod *ppod, - struct cxgbi_task_tag_info *ttinfo, - struct scatterlist **sg_pp, unsigned int *sg_off) -{ - struct scatterlist *sg = sg_pp ? *sg_pp : NULL; - unsigned int offset = sg_off ? *sg_off : 0; - dma_addr_t addr = 0UL; - unsigned int len = 0; - int i; - - memcpy(ppod, &ttinfo->hdr, sizeof(struct cxgbi_pagepod_hdr)); - - if (sg) { - addr = sg_dma_address(sg); - len = sg_dma_len(sg); - } - - for (i = 0; i < PPOD_PAGES_MAX; i++) { - if (sg) { - ppod->addr[i] = cpu_to_be64(addr + offset); - offset += PAGE_SIZE; - if (offset == (len + sg->offset)) { - offset = 0; - sg = sg_next(sg); - if (sg) { - addr = sg_dma_address(sg); - len = sg_dma_len(sg); - } - } - } else { - ppod->addr[i] = 0ULL; - } - } - - /* - * the fifth address needs to be repeated in the next ppod, so do - * not move sg - */ - if (sg_pp) { - *sg_pp = sg; - *sg_off = offset; - } - - if (offset == len) { - offset = 0; - if (sg) { - sg = sg_next(sg); - if (sg) - addr = sg_dma_address(sg); - } - } - ppod->addr[i] = sg ? cpu_to_be64(addr + offset) : 0ULL; -} - static struct sk_buff * cxgbit_ppod_init_idata(struct cxgbit_device *cdev, struct cxgbi_ppm *ppm, unsigned int idx, unsigned int npods, unsigned int tid) @@ -116,7 +61,7 @@ cxgbit_ppod_write_idata(struct cxgbi_ppm *ppm, struct cxgbit_sock *csk, ppod = (struct cxgbi_pagepod *)(idata + 1); for (i = 0; i < npods; i++, ppod++) - cxgbit_set_one_ppod(ppod, ttinfo, sg_pp, sg_off); + cxgbi_ppm_set_one_ppod(ppod, ttinfo, sg_pp, sg_off); __skb_queue_tail(&csk->ppodq, skb);