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authorKees Cook <keescook@chromium.org>2018-06-12 13:55:00 -0700
committerKees Cook <keescook@chromium.org>2018-06-12 16:19:22 -0700
commit6da2ec56059c3c7a7e5f729e6349e74ace1e5c57 (patch)
tree2278b513e904a46e930a856da3ed3ac5bc3fe4a4 /arch
parent1c542f38ab8d30d9c852a16d49ac5a15267bbf1f (diff)
downloadlinux-6da2ec56059c3c7a7e5f729e6349e74ace1e5c57.tar.gz
treewide: kmalloc() -> kmalloc_array()
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This patch replaces cases of: kmalloc(a * b, gfp) with: kmalloc_array(a * b, gfp) as well as handling cases of: kmalloc(a * b * c, gfp) with: kmalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kmalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kmalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The tools/ directory was manually excluded, since it has its own implementation of kmalloc(). The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kmalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kmalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kmalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(char) * COUNT + COUNT , ...) | kmalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kmalloc + kmalloc_array ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kmalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kmalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kmalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kmalloc(C1 * C2 * C3, ...) | kmalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kmalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kmalloc(sizeof(THING) * C2, ...) | kmalloc(sizeof(TYPE) * C2, ...) | kmalloc(C1 * C2 * C3, ...) | kmalloc(C1 * C2, ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - (E1) * E2 + E1, E2 , ...) | - kmalloc + kmalloc_array ( - (E1) * (E2) + E1, E2 , ...) | - kmalloc + kmalloc_array ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/kernel/sys_oabi-compat.c4
-rw-r--r--arch/arm/mm/pgd.c2
-rw-r--r--arch/arm/probes/kprobes/test-core.c5
-rw-r--r--arch/ia64/kernel/mca_drv.c3
-rw-r--r--arch/ia64/mm/tlb.c5
-rw-r--r--arch/ia64/sn/kernel/irq.c3
-rw-r--r--arch/mips/alchemy/common/dbdma.c4
-rw-r--r--arch/powerpc/lib/rheap.c2
-rw-r--r--arch/powerpc/platforms/4xx/hsta_msi.c3
-rw-r--r--arch/powerpc/platforms/4xx/msi.c2
-rw-r--r--arch/powerpc/sysdev/mpic.c5
-rw-r--r--arch/s390/hypfs/hypfs_diag0c.c3
-rw-r--r--arch/s390/kernel/debug.c6
-rw-r--r--arch/s390/kernel/perf_cpum_cf_events.c2
-rw-r--r--arch/s390/mm/extmem.c2
-rw-r--r--arch/sparc/kernel/nmi.c3
-rw-r--r--arch/sparc/kernel/sys_sparc_64.c5
-rw-r--r--arch/sparc/net/bpf_jit_comp_32.c2
-rw-r--r--arch/um/drivers/ubd_kern.c12
-rw-r--r--arch/um/drivers/vector_kern.c12
-rw-r--r--arch/unicore32/kernel/pm.c5
-rw-r--r--arch/x86/events/core.c2
-rw-r--r--arch/x86/kernel/hpet.c4
-rw-r--r--arch/x86/kernel/ksysfs.c2
-rw-r--r--arch/x86/kvm/svm.c4
-rw-r--r--arch/x86/net/bpf_jit_comp.c2
-rw-r--r--arch/x86/net/bpf_jit_comp32.c2
-rw-r--r--arch/x86/platform/uv/tlb_uv.c2
28 files changed, 61 insertions, 47 deletions
diff --git a/arch/arm/kernel/sys_oabi-compat.c b/arch/arm/kernel/sys_oabi-compat.c
index b9786f491873..1df21a61e379 100644
--- a/arch/arm/kernel/sys_oabi-compat.c
+++ b/arch/arm/kernel/sys_oabi-compat.c
@@ -286,7 +286,7 @@ asmlinkage long sys_oabi_epoll_wait(int epfd,
return -EINVAL;
if (!access_ok(VERIFY_WRITE, events, sizeof(*events) * maxevents))
return -EFAULT;
- kbuf = kmalloc(sizeof(*kbuf) * maxevents, GFP_KERNEL);
+ kbuf = kmalloc_array(maxevents, sizeof(*kbuf), GFP_KERNEL);
if (!kbuf)
return -ENOMEM;
fs = get_fs();
@@ -324,7 +324,7 @@ asmlinkage long sys_oabi_semtimedop(int semid,
return -EINVAL;
if (!access_ok(VERIFY_READ, tsops, sizeof(*tsops) * nsops))
return -EFAULT;
- sops = kmalloc(sizeof(*sops) * nsops, GFP_KERNEL);
+ sops = kmalloc_array(nsops, sizeof(*sops), GFP_KERNEL);
if (!sops)
return -ENOMEM;
err = 0;
diff --git a/arch/arm/mm/pgd.c b/arch/arm/mm/pgd.c
index 61e281cb29fb..a1606d950251 100644
--- a/arch/arm/mm/pgd.c
+++ b/arch/arm/mm/pgd.c
@@ -20,7 +20,7 @@
#include "mm.h"
#ifdef CONFIG_ARM_LPAE
-#define __pgd_alloc() kmalloc(PTRS_PER_PGD * sizeof(pgd_t), GFP_KERNEL)
+#define __pgd_alloc() kmalloc_array(PTRS_PER_PGD, sizeof(pgd_t), GFP_KERNEL)
#define __pgd_free(pgd) kfree(pgd)
#else
#define __pgd_alloc() (pgd_t *)__get_free_pages(GFP_KERNEL, 2)
diff --git a/arch/arm/probes/kprobes/test-core.c b/arch/arm/probes/kprobes/test-core.c
index 9ed0129bed3c..14db14152909 100644
--- a/arch/arm/probes/kprobes/test-core.c
+++ b/arch/arm/probes/kprobes/test-core.c
@@ -766,8 +766,9 @@ static int coverage_start_fn(const struct decode_header *h, void *args)
static int coverage_start(const union decode_item *table)
{
- coverage.base = kmalloc(MAX_COVERAGE_ENTRIES *
- sizeof(struct coverage_entry), GFP_KERNEL);
+ coverage.base = kmalloc_array(MAX_COVERAGE_ENTRIES,
+ sizeof(struct coverage_entry),
+ GFP_KERNEL);
coverage.num_entries = 0;
coverage.nesting = 0;
return table_iter(table, coverage_start_fn, &coverage);
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
index 94f8bf777afa..dfe40cbdf3b3 100644
--- a/arch/ia64/kernel/mca_drv.c
+++ b/arch/ia64/kernel/mca_drv.c
@@ -350,7 +350,8 @@ init_record_index_pools(void)
/* - 3 - */
slidx_pool.max_idx = (rec_max_size/sect_min_size) * 2 + 1;
slidx_pool.buffer =
- kmalloc(slidx_pool.max_idx * sizeof(slidx_list_t), GFP_KERNEL);
+ kmalloc_array(slidx_pool.max_idx, sizeof(slidx_list_t),
+ GFP_KERNEL);
return slidx_pool.buffer ? 0 : -ENOMEM;
}
diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c
index 46ecc5d948aa..acf10eb9da15 100644
--- a/arch/ia64/mm/tlb.c
+++ b/arch/ia64/mm/tlb.c
@@ -430,8 +430,9 @@ int ia64_itr_entry(u64 target_mask, u64 va, u64 pte, u64 log_size)
int cpu = smp_processor_id();
if (!ia64_idtrs[cpu]) {
- ia64_idtrs[cpu] = kmalloc(2 * IA64_TR_ALLOC_MAX *
- sizeof (struct ia64_tr_entry), GFP_KERNEL);
+ ia64_idtrs[cpu] = kmalloc_array(2 * IA64_TR_ALLOC_MAX,
+ sizeof(struct ia64_tr_entry),
+ GFP_KERNEL);
if (!ia64_idtrs[cpu])
return -ENOMEM;
}
diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
index 85d095154902..d9b576df4f82 100644
--- a/arch/ia64/sn/kernel/irq.c
+++ b/arch/ia64/sn/kernel/irq.c
@@ -474,7 +474,8 @@ void __init sn_irq_lh_init(void)
{
int i;
- sn_irq_lh = kmalloc(sizeof(struct list_head *) * NR_IRQS, GFP_KERNEL);
+ sn_irq_lh = kmalloc_array(NR_IRQS, sizeof(struct list_head *),
+ GFP_KERNEL);
if (!sn_irq_lh)
panic("SN PCI INIT: Failed to allocate memory for PCI init\n");
diff --git a/arch/mips/alchemy/common/dbdma.c b/arch/mips/alchemy/common/dbdma.c
index fc482d900ddd..24b04758cce5 100644
--- a/arch/mips/alchemy/common/dbdma.c
+++ b/arch/mips/alchemy/common/dbdma.c
@@ -411,8 +411,8 @@ u32 au1xxx_dbdma_ring_alloc(u32 chanid, int entries)
* and if we try that first we are likely to not waste larger
* slabs of memory.
*/
- desc_base = (u32)kmalloc(entries * sizeof(au1x_ddma_desc_t),
- GFP_KERNEL|GFP_DMA);
+ desc_base = (u32)kmalloc_array(entries, sizeof(au1x_ddma_desc_t),
+ GFP_KERNEL|GFP_DMA);
if (desc_base == 0)
return 0;
diff --git a/arch/powerpc/lib/rheap.c b/arch/powerpc/lib/rheap.c
index 94058c21a482..6aa774aa5b16 100644
--- a/arch/powerpc/lib/rheap.c
+++ b/arch/powerpc/lib/rheap.c
@@ -54,7 +54,7 @@ static int grow(rh_info_t * info, int max_blocks)
new_blocks = max_blocks - info->max_blocks;
- block = kmalloc(sizeof(rh_block_t) * max_blocks, GFP_ATOMIC);
+ block = kmalloc_array(max_blocks, sizeof(rh_block_t), GFP_ATOMIC);
if (block == NULL)
return -ENOMEM;
diff --git a/arch/powerpc/platforms/4xx/hsta_msi.c b/arch/powerpc/platforms/4xx/hsta_msi.c
index 9926ad67af76..1c18f2955f7d 100644
--- a/arch/powerpc/platforms/4xx/hsta_msi.c
+++ b/arch/powerpc/platforms/4xx/hsta_msi.c
@@ -156,7 +156,8 @@ static int hsta_msi_probe(struct platform_device *pdev)
if (ret)
goto out;
- ppc4xx_hsta_msi.irq_map = kmalloc(sizeof(int) * irq_count, GFP_KERNEL);
+ ppc4xx_hsta_msi.irq_map = kmalloc_array(irq_count, sizeof(int),
+ GFP_KERNEL);
if (!ppc4xx_hsta_msi.irq_map) {
ret = -ENOMEM;
goto out1;
diff --git a/arch/powerpc/platforms/4xx/msi.c b/arch/powerpc/platforms/4xx/msi.c
index 96aaae678928..81b2cbce7df8 100644
--- a/arch/powerpc/platforms/4xx/msi.c
+++ b/arch/powerpc/platforms/4xx/msi.c
@@ -89,7 +89,7 @@ static int ppc4xx_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
if (type == PCI_CAP_ID_MSIX)
pr_debug("ppc4xx msi: MSI-X untested, trying anyway.\n");
- msi_data->msi_virqs = kmalloc((msi_irqs) * sizeof(int), GFP_KERNEL);
+ msi_data->msi_virqs = kmalloc_array(msi_irqs, sizeof(int), GFP_KERNEL);
if (!msi_data->msi_virqs)
return -ENOMEM;
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 1d4e0ef658d3..df062a154ca8 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -1639,8 +1639,9 @@ void __init mpic_init(struct mpic *mpic)
#ifdef CONFIG_PM
/* allocate memory to save mpic state */
- mpic->save_data = kmalloc(mpic->num_sources * sizeof(*mpic->save_data),
- GFP_KERNEL);
+ mpic->save_data = kmalloc_array(mpic->num_sources,
+ sizeof(*mpic->save_data),
+ GFP_KERNEL);
BUG_ON(mpic->save_data == NULL);
#endif
diff --git a/arch/s390/hypfs/hypfs_diag0c.c b/arch/s390/hypfs/hypfs_diag0c.c
index dce87f1bec94..cebf05150cc1 100644
--- a/arch/s390/hypfs/hypfs_diag0c.c
+++ b/arch/s390/hypfs/hypfs_diag0c.c
@@ -49,7 +49,8 @@ static void *diag0c_store(unsigned int *count)
get_online_cpus();
cpu_count = num_online_cpus();
- cpu_vec = kmalloc(sizeof(*cpu_vec) * num_possible_cpus(), GFP_KERNEL);
+ cpu_vec = kmalloc_array(num_possible_cpus(), sizeof(*cpu_vec),
+ GFP_KERNEL);
if (!cpu_vec)
goto fail_put_online_cpus;
/* Note: Diag 0c needs 8 byte alignment and real storage */
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index 80e974adb9e8..d374f9b218b4 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -194,11 +194,13 @@ static debug_entry_t ***debug_areas_alloc(int pages_per_area, int nr_areas)
debug_entry_t ***areas;
int i, j;
- areas = kmalloc(nr_areas * sizeof(debug_entry_t **), GFP_KERNEL);
+ areas = kmalloc_array(nr_areas, sizeof(debug_entry_t **), GFP_KERNEL);
if (!areas)
goto fail_malloc_areas;
for (i = 0; i < nr_areas; i++) {
- areas[i] = kmalloc(pages_per_area * sizeof(debug_entry_t *), GFP_KERNEL);
+ areas[i] = kmalloc_array(pages_per_area,
+ sizeof(debug_entry_t *),
+ GFP_KERNEL);
if (!areas[i])
goto fail_malloc_areas2;
for (j = 0; j < pages_per_area; j++) {
diff --git a/arch/s390/kernel/perf_cpum_cf_events.c b/arch/s390/kernel/perf_cpum_cf_events.c
index feebb2944882..d63fb3c56b8a 100644
--- a/arch/s390/kernel/perf_cpum_cf_events.c
+++ b/arch/s390/kernel/perf_cpum_cf_events.c
@@ -527,7 +527,7 @@ static __init struct attribute **merge_attr(struct attribute **a,
j++;
j++;
- new = kmalloc(sizeof(struct attribute *) * j, GFP_KERNEL);
+ new = kmalloc_array(j, sizeof(struct attribute *), GFP_KERNEL);
if (!new)
return NULL;
j = 0;
diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c
index 920d40894535..6ad15d3fab81 100644
--- a/arch/s390/mm/extmem.c
+++ b/arch/s390/mm/extmem.c
@@ -103,7 +103,7 @@ static int scode_set;
static int
dcss_set_subcodes(void)
{
- char *name = kmalloc(8 * sizeof(char), GFP_KERNEL | GFP_DMA);
+ char *name = kmalloc(8, GFP_KERNEL | GFP_DMA);
unsigned long rx, ry;
int rc;
diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c
index 048ad783ea3f..8babbeb30adf 100644
--- a/arch/sparc/kernel/nmi.c
+++ b/arch/sparc/kernel/nmi.c
@@ -166,7 +166,8 @@ static int __init check_nmi_watchdog(void)
if (!atomic_read(&nmi_active))
return 0;
- prev_nmi_count = kmalloc(nr_cpu_ids * sizeof(unsigned int), GFP_KERNEL);
+ prev_nmi_count = kmalloc_array(nr_cpu_ids, sizeof(unsigned int),
+ GFP_KERNEL);
if (!prev_nmi_count) {
err = -ENOMEM;
goto error;
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
index 7e49bbc925a5..33e351704f9f 100644
--- a/arch/sparc/kernel/sys_sparc_64.c
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -575,8 +575,9 @@ SYSCALL_DEFINE5(utrap_install, utrap_entry_t, type,
unsigned long *p = current_thread_info()->utraps;
current_thread_info()->utraps =
- kmalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long),
- GFP_KERNEL);
+ kmalloc_array(UT_TRAP_INSTRUCTION_31 + 1,
+ sizeof(long),
+ GFP_KERNEL);
if (!current_thread_info()->utraps) {
current_thread_info()->utraps = p;
return -ENOMEM;
diff --git a/arch/sparc/net/bpf_jit_comp_32.c b/arch/sparc/net/bpf_jit_comp_32.c
index 3bd8ca95e521..a5ff88643d5c 100644
--- a/arch/sparc/net/bpf_jit_comp_32.c
+++ b/arch/sparc/net/bpf_jit_comp_32.c
@@ -335,7 +335,7 @@ void bpf_jit_compile(struct bpf_prog *fp)
if (!bpf_jit_enable)
return;
- addrs = kmalloc(flen * sizeof(*addrs), GFP_KERNEL);
+ addrs = kmalloc_array(flen, sizeof(*addrs), GFP_KERNEL);
if (addrs == NULL)
return;
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index dcf5ea28a281..83c470364dfb 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -1127,9 +1127,9 @@ static int __init ubd_init(void)
return -1;
}
- irq_req_buffer = kmalloc(
- sizeof(struct io_thread_req *) * UBD_REQ_BUFFER_SIZE,
- GFP_KERNEL
+ irq_req_buffer = kmalloc_array(UBD_REQ_BUFFER_SIZE,
+ sizeof(struct io_thread_req *),
+ GFP_KERNEL
);
irq_remainder = 0;
@@ -1137,9 +1137,9 @@ static int __init ubd_init(void)
printk(KERN_ERR "Failed to initialize ubd buffering\n");
return -1;
}
- io_req_buffer = kmalloc(
- sizeof(struct io_thread_req *) * UBD_REQ_BUFFER_SIZE,
- GFP_KERNEL
+ io_req_buffer = kmalloc_array(UBD_REQ_BUFFER_SIZE,
+ sizeof(struct io_thread_req *),
+ GFP_KERNEL
);
io_remainder = 0;
diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c
index 02168fe25105..627075e6d875 100644
--- a/arch/um/drivers/vector_kern.c
+++ b/arch/um/drivers/vector_kern.c
@@ -527,14 +527,14 @@ static struct vector_queue *create_queue(
result->max_iov_frags = num_extra_frags;
for (i = 0; i < max_size; i++) {
if (vp->header_size > 0)
- iov = kmalloc(
- sizeof(struct iovec) * (3 + num_extra_frags),
- GFP_KERNEL
+ iov = kmalloc_array(3 + num_extra_frags,
+ sizeof(struct iovec),
+ GFP_KERNEL
);
else
- iov = kmalloc(
- sizeof(struct iovec) * (2 + num_extra_frags),
- GFP_KERNEL
+ iov = kmalloc_array(2 + num_extra_frags,
+ sizeof(struct iovec),
+ GFP_KERNEL
);
if (iov == NULL)
goto out_fail;
diff --git a/arch/unicore32/kernel/pm.c b/arch/unicore32/kernel/pm.c
index 784bc2db3b28..6f8164d91dc2 100644
--- a/arch/unicore32/kernel/pm.c
+++ b/arch/unicore32/kernel/pm.c
@@ -109,8 +109,9 @@ static int __init puv3_pm_init(void)
return -EINVAL;
}
- sleep_save = kmalloc(puv3_cpu_pm_fns->save_count
- * sizeof(unsigned long), GFP_KERNEL);
+ sleep_save = kmalloc_array(puv3_cpu_pm_fns->save_count,
+ sizeof(unsigned long),
+ GFP_KERNEL);
if (!sleep_save) {
printk(KERN_ERR "failed to alloc memory for pm save\n");
return -ENOMEM;
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index 6e461fb1e0d4..5f4829f10129 100644
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -1637,7 +1637,7 @@ __init struct attribute **merge_attr(struct attribute **a, struct attribute **b)
j++;
j++;
- new = kmalloc(sizeof(struct attribute *) * j, GFP_KERNEL);
+ new = kmalloc_array(j, sizeof(struct attribute *), GFP_KERNEL);
if (!new)
return NULL;
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index b6be34ee88e9..ddccdea0b63b 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -966,8 +966,8 @@ int __init hpet_enable(void)
#endif
cfg = hpet_readl(HPET_CFG);
- hpet_boot_cfg = kmalloc((last + 2) * sizeof(*hpet_boot_cfg),
- GFP_KERNEL);
+ hpet_boot_cfg = kmalloc_array(last + 2, sizeof(*hpet_boot_cfg),
+ GFP_KERNEL);
if (hpet_boot_cfg)
*hpet_boot_cfg = cfg;
else
diff --git a/arch/x86/kernel/ksysfs.c b/arch/x86/kernel/ksysfs.c
index 8c1cc08f514f..163ae706a0d4 100644
--- a/arch/x86/kernel/ksysfs.c
+++ b/arch/x86/kernel/ksysfs.c
@@ -283,7 +283,7 @@ static int __init create_setup_data_nodes(struct kobject *parent)
if (ret)
goto out_setup_data_kobj;
- kobjp = kmalloc(sizeof(*kobjp) * nr, GFP_KERNEL);
+ kobjp = kmalloc_array(nr, sizeof(*kobjp), GFP_KERNEL);
if (!kobjp) {
ret = -ENOMEM;
goto out_setup_data_kobj;
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 950ec50f77c3..e831e6d3b70e 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1001,7 +1001,9 @@ static int svm_cpu_init(int cpu)
if (svm_sev_enabled()) {
r = -ENOMEM;
- sd->sev_vmcbs = kmalloc((max_sev_asid + 1) * sizeof(void *), GFP_KERNEL);
+ sd->sev_vmcbs = kmalloc_array(max_sev_asid + 1,
+ sizeof(void *),
+ GFP_KERNEL);
if (!sd->sev_vmcbs)
goto err_1;
}
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index 8fca446aaef6..2580cd2e98b1 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -1107,7 +1107,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
extra_pass = true;
goto skip_init_addrs;
}
- addrs = kmalloc(prog->len * sizeof(*addrs), GFP_KERNEL);
+ addrs = kmalloc_array(prog->len, sizeof(*addrs), GFP_KERNEL);
if (!addrs) {
prog = orig_prog;
goto out_addrs;
diff --git a/arch/x86/net/bpf_jit_comp32.c b/arch/x86/net/bpf_jit_comp32.c
index 0cc04e30adc1..55799873ebe5 100644
--- a/arch/x86/net/bpf_jit_comp32.c
+++ b/arch/x86/net/bpf_jit_comp32.c
@@ -2345,7 +2345,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog)
prog = tmp;
}
- addrs = kmalloc(prog->len * sizeof(*addrs), GFP_KERNEL);
+ addrs = kmalloc_array(prog->len, sizeof(*addrs), GFP_KERNEL);
if (!addrs) {
prog = orig_prog;
goto out;
diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
index b96d38288c60..ca446da48fd2 100644
--- a/arch/x86/platform/uv/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -2142,7 +2142,7 @@ static int __init init_per_cpu(int nuvhubs, int base_part_pnode)
if (is_uv3_hub() || is_uv2_hub() || is_uv1_hub())
timeout_us = calculate_destination_timeout();
- vp = kmalloc(nuvhubs * sizeof(struct uvhub_desc), GFP_KERNEL);
+ vp = kmalloc_array(nuvhubs, sizeof(struct uvhub_desc), GFP_KERNEL);
uvhub_descs = (struct uvhub_desc *)vp;
memset(uvhub_descs, 0, nuvhubs * sizeof(struct uvhub_desc));
uvhub_mask = kzalloc((nuvhubs+7)/8, GFP_KERNEL);