From d80db5c1ed8ddcb836766adfe773b6a6768df831 Mon Sep 17 00:00:00 2001 From: Mike Rapoport Date: Mon, 11 Mar 2019 23:30:00 -0700 Subject: ia64: add checks for the return value of memblock_alloc*() Add panic() calls if memblock_alloc*() returns NULL. Most of the changes are simply addition of if(!ptr) panic(); statements after the calls to memblock_alloc*() variants. Exceptions are create_mem_map_page_table() and ia64_log_init() that were slightly refactored to accommodate the change. Link: http://lkml.kernel.org/r/1548057848-15136-15-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport Cc: Catalin Marinas Cc: Christophe Leroy Cc: Christoph Hellwig Cc: "David S. Miller" Cc: Dennis Zhou Cc: Geert Uytterhoeven Cc: Greentime Hu Cc: Greg Kroah-Hartman Cc: Guan Xuetao Cc: Guo Ren Cc: Guo Ren [c-sky] Cc: Heiko Carstens Cc: Juergen Gross [Xen] Cc: Mark Salter Cc: Matt Turner Cc: Max Filippov Cc: Michael Ellerman Cc: Michal Simek Cc: Paul Burton Cc: Petr Mladek Cc: Richard Weinberger Cc: Rich Felker Cc: Rob Herring Cc: Rob Herring Cc: Russell King Cc: Stafford Horne Cc: Tony Luck Cc: Vineet Gupta Cc: Yoshinori Sato Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/ia64/kernel/mca.c | 20 ++++++++++++++------ arch/ia64/mm/contig.c | 8 ++++++-- arch/ia64/mm/discontig.c | 4 ++++ arch/ia64/mm/init.c | 38 ++++++++++++++++++++++++++++++-------- arch/ia64/mm/tlb.c | 6 ++++++ arch/ia64/sn/kernel/io_common.c | 3 +++ arch/ia64/sn/kernel/setup.c | 12 +++++++++++- 7 files changed, 74 insertions(+), 17 deletions(-) diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c index 370bc349619a..5cabb3fd159f 100644 --- a/arch/ia64/kernel/mca.c +++ b/arch/ia64/kernel/mca.c @@ -359,11 +359,6 @@ typedef struct ia64_state_log_s static ia64_state_log_t ia64_state_log[IA64_MAX_LOG_TYPES]; -#define IA64_LOG_ALLOCATE(it, size) \ - {ia64_state_log[it].isl_log[IA64_LOG_CURR_INDEX(it)] = \ - (ia64_err_rec_t *)memblock_alloc(size, SMP_CACHE_BYTES); \ - ia64_state_log[it].isl_log[IA64_LOG_NEXT_INDEX(it)] = \ - (ia64_err_rec_t *)memblock_alloc(size, SMP_CACHE_BYTES);} #define IA64_LOG_LOCK_INIT(it) spin_lock_init(&ia64_state_log[it].isl_lock) #define IA64_LOG_LOCK(it) spin_lock_irqsave(&ia64_state_log[it].isl_lock, s) #define IA64_LOG_UNLOCK(it) spin_unlock_irqrestore(&ia64_state_log[it].isl_lock,s) @@ -378,6 +373,19 @@ static ia64_state_log_t ia64_state_log[IA64_MAX_LOG_TYPES]; #define IA64_LOG_CURR_BUFFER(it) (void *)((ia64_state_log[it].isl_log[IA64_LOG_CURR_INDEX(it)])) #define IA64_LOG_COUNT(it) ia64_state_log[it].isl_count +static inline void ia64_log_allocate(int it, u64 size) +{ + ia64_state_log[it].isl_log[IA64_LOG_CURR_INDEX(it)] = + (ia64_err_rec_t *)memblock_alloc(size, SMP_CACHE_BYTES); + if (!ia64_state_log[it].isl_log[IA64_LOG_CURR_INDEX(it)]) + panic("%s: Failed to allocate %llu bytes\n", __func__, size); + + ia64_state_log[it].isl_log[IA64_LOG_NEXT_INDEX(it)] = + (ia64_err_rec_t *)memblock_alloc(size, SMP_CACHE_BYTES); + if (!ia64_state_log[it].isl_log[IA64_LOG_NEXT_INDEX(it)]) + panic("%s: Failed to allocate %llu bytes\n", __func__, size); +} + /* * ia64_log_init * Reset the OS ia64 log buffer @@ -399,7 +407,7 @@ ia64_log_init(int sal_info_type) return; // set up OS data structures to hold error info - IA64_LOG_ALLOCATE(sal_info_type, max_size); + ia64_log_allocate(sal_info_type, max_size); } /* diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c index 6e447234205c..d29fb6b9fa33 100644 --- a/arch/ia64/mm/contig.c +++ b/arch/ia64/mm/contig.c @@ -84,9 +84,13 @@ skip: static inline void alloc_per_cpu_data(void) { - cpu_data = memblock_alloc_from(PERCPU_PAGE_SIZE * num_possible_cpus(), - PERCPU_PAGE_SIZE, + size_t size = PERCPU_PAGE_SIZE * num_possible_cpus(); + + cpu_data = memblock_alloc_from(size, PERCPU_PAGE_SIZE, __pa(MAX_DMA_ADDRESS)); + if (!cpu_data) + panic("%s: Failed to allocate %lu bytes align=%lx from=%lx\n", + __func__, size, PERCPU_PAGE_SIZE, __pa(MAX_DMA_ADDRESS)); } /** diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c index f9c36750c6a4..05490dd073e6 100644 --- a/arch/ia64/mm/discontig.c +++ b/arch/ia64/mm/discontig.c @@ -454,6 +454,10 @@ static void __init *memory_less_node_alloc(int nid, unsigned long pernodesize) __pa(MAX_DMA_ADDRESS), MEMBLOCK_ALLOC_ACCESSIBLE, bestnode); + if (!ptr) + panic("%s: Failed to allocate %lu bytes align=0x%lx nid=%d from=%lx\n", + __func__, pernodesize, PERCPU_PAGE_SIZE, bestnode, + __pa(MAX_DMA_ADDRESS)); return ptr; } diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c index 29d841525ca1..e49200e31750 100644 --- a/arch/ia64/mm/init.c +++ b/arch/ia64/mm/init.c @@ -444,23 +444,45 @@ int __init create_mem_map_page_table(u64 start, u64 end, void *arg) for (address = start_page; address < end_page; address += PAGE_SIZE) { pgd = pgd_offset_k(address); - if (pgd_none(*pgd)) - pgd_populate(&init_mm, pgd, memblock_alloc_node(PAGE_SIZE, PAGE_SIZE, node)); + if (pgd_none(*pgd)) { + pud = memblock_alloc_node(PAGE_SIZE, PAGE_SIZE, node); + if (!pud) + goto err_alloc; + pgd_populate(&init_mm, pgd, pud); + } pud = pud_offset(pgd, address); - if (pud_none(*pud)) - pud_populate(&init_mm, pud, memblock_alloc_node(PAGE_SIZE, PAGE_SIZE, node)); + if (pud_none(*pud)) { + pmd = memblock_alloc_node(PAGE_SIZE, PAGE_SIZE, node); + if (!pmd) + goto err_alloc; + pud_populate(&init_mm, pud, pmd); + } pmd = pmd_offset(pud, address); - if (pmd_none(*pmd)) - pmd_populate_kernel(&init_mm, pmd, memblock_alloc_node(PAGE_SIZE, PAGE_SIZE, node)); + if (pmd_none(*pmd)) { + pte = memblock_alloc_node(PAGE_SIZE, PAGE_SIZE, node); + if (!pte) + goto err_alloc; + pmd_populate_kernel(&init_mm, pmd, pte); + } pte = pte_offset_kernel(pmd, address); - if (pte_none(*pte)) - set_pte(pte, pfn_pte(__pa(memblock_alloc_node(PAGE_SIZE, PAGE_SIZE, node)) >> PAGE_SHIFT, + if (pte_none(*pte)) { + void *page = memblock_alloc_node(PAGE_SIZE, PAGE_SIZE, + node); + if (!page) + goto err_alloc; + set_pte(pte, pfn_pte(__pa(page) >> PAGE_SHIFT, PAGE_KERNEL)); + } } return 0; + +err_alloc: + panic("%s: Failed to allocate %lu bytes align=0x%lx nid=%d\n", + __func__, PAGE_SIZE, PAGE_SIZE, node); + return -ENOMEM; } struct memmap_init_callback_data { diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c index 9340bcb4f29c..5fc89aabdce1 100644 --- a/arch/ia64/mm/tlb.c +++ b/arch/ia64/mm/tlb.c @@ -61,8 +61,14 @@ mmu_context_init (void) { ia64_ctx.bitmap = memblock_alloc((ia64_ctx.max_ctx + 1) >> 3, SMP_CACHE_BYTES); + if (!ia64_ctx.bitmap) + panic("%s: Failed to allocate %u bytes\n", __func__, + (ia64_ctx.max_ctx + 1) >> 3); ia64_ctx.flushmap = memblock_alloc((ia64_ctx.max_ctx + 1) >> 3, SMP_CACHE_BYTES); + if (!ia64_ctx.flushmap) + panic("%s: Failed to allocate %u bytes\n", __func__, + (ia64_ctx.max_ctx + 1) >> 3); } /* diff --git a/arch/ia64/sn/kernel/io_common.c b/arch/ia64/sn/kernel/io_common.c index 8df13d0d96fa..d46847323ef6 100644 --- a/arch/ia64/sn/kernel/io_common.c +++ b/arch/ia64/sn/kernel/io_common.c @@ -394,6 +394,9 @@ void __init hubdev_init_node(nodepda_t * npda, cnodeid_t node) hubdev_info = (struct hubdev_info *)memblock_alloc_node(size, SMP_CACHE_BYTES, node); + if (!hubdev_info) + panic("%s: Failed to allocate %d bytes align=0x%x nid=%d\n", + __func__, size, SMP_CACHE_BYTES, node); npda->pdinfo = (void *)hubdev_info; } diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c index a6d40a2c5bff..e6a5049ef503 100644 --- a/arch/ia64/sn/kernel/setup.c +++ b/arch/ia64/sn/kernel/setup.c @@ -513,6 +513,10 @@ static void __init sn_init_pdas(char **cmdline_p) nodepdaindr[cnode] = memblock_alloc_node(sizeof(nodepda_t), SMP_CACHE_BYTES, cnode); + if (!nodepdaindr[cnode]) + panic("%s: Failed to allocate %lu bytes align=0x%x nid=%d\n", + __func__, sizeof(nodepda_t), SMP_CACHE_BYTES, + cnode); memset(nodepdaindr[cnode]->phys_cpuid, -1, sizeof(nodepdaindr[cnode]->phys_cpuid)); spin_lock_init(&nodepdaindr[cnode]->ptc_lock); @@ -521,9 +525,15 @@ static void __init sn_init_pdas(char **cmdline_p) /* * Allocate & initialize nodepda for TIOs. For now, put them on node 0. */ - for (cnode = num_online_nodes(); cnode < num_cnodes; cnode++) + for (cnode = num_online_nodes(); cnode < num_cnodes; cnode++) { nodepdaindr[cnode] = memblock_alloc_node(sizeof(nodepda_t), SMP_CACHE_BYTES, 0); + if (!nodepdaindr[cnode]) + panic("%s: Failed to allocate %lu bytes align=0x%x nid=%d\n", + __func__, sizeof(nodepda_t), SMP_CACHE_BYTES, + cnode); + } + /* * Now copy the array of nodepda pointers to each nodepda. -- cgit v1.2.3