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linuxkm/: fixes to deal with kernel 6.1+ show_free_areas() mess.

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This commit is contained in:
Daniel Pouzzner
2022-10-18 13:34:24 -05:00
parent b7c4ddba72
commit c8c107a09e
3 changed files with 45 additions and 8 deletions
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16
linuxkm/linuxkm_memory.c
View File

@ -305,3 +305,19 @@
return;
}
#endif /* WOLFSSL_LINUXKM_SIMD_X86 && WOLFSSL_LINUXKM_SIMD_X86_IRQ_ALLOWED */
#if defined(__PIE__) && (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0))
/* needed in 6.1+ because show_free_areas() static definition in mm.h calls
* __show_free_areas(), which isn't exported (neither was show_free_areas()).
*/
void my__show_free_areas(
unsigned int flags,
nodemask_t *nodemask,
int max_zone_idx)
{
(void)flags;
(void)nodemask;
(void)max_zone_idx;
return;
}
#endif

16
linuxkm/linuxkm_wc_port.h
View File

@ -105,6 +105,13 @@
*/
#undef USE_SPLIT_PMD_PTLOCKS
#define USE_SPLIT_PMD_PTLOCKS 0
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0)
/* without this, static show_free_areas() mm.h brings in direct
* reference to unexported __show_free_areas().
*/
#define __show_free_areas my__show_free_areas
#endif
#endif
#include <linux/mm.h>
#ifndef SINGLE_THREADED
@ -267,8 +274,13 @@
typeof(kvfree) *kvfree;
#endif
typeof(is_vmalloc_addr) *is_vmalloc_addr;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0)
typeof(kmalloc_trace) *kmalloc_trace;
#else
typeof(kmem_cache_alloc_trace) *kmem_cache_alloc_trace;
typeof(kmalloc_order_trace) *kmalloc_order_trace;
#endif
typeof(get_random_bytes) *get_random_bytes;
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 0, 0)
@ -402,8 +414,12 @@
#define kvfree (wolfssl_linuxkm_get_pie_redirect_table()->kvfree)
#endif
#define is_vmalloc_addr (wolfssl_linuxkm_get_pie_redirect_table()->is_vmalloc_addr)
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0)
#define kmalloc_trace (wolfssl_linuxkm_get_pie_redirect_table()->kmalloc_trace)
#else
#define kmem_cache_alloc_trace (wolfssl_linuxkm_get_pie_redirect_table()->kmem_cache_alloc_trace)
#define kmalloc_order_trace (wolfssl_linuxkm_get_pie_redirect_table()->kmalloc_order_trace)
#endif
#define get_random_bytes (wolfssl_linuxkm_get_pie_redirect_table()->get_random_bytes)
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 0, 0)

5
linuxkm/module_hooks.c
View File

@ -394,10 +394,15 @@ static int set_up_wolfssl_linuxkm_pie_redirect_table(void) {
wolfssl_linuxkm_pie_redirect_table.kvfree = kvfree;
#endif
wolfssl_linuxkm_pie_redirect_table.is_vmalloc_addr = is_vmalloc_addr;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0)
wolfssl_linuxkm_pie_redirect_table.kmalloc_trace =
kmalloc_trace;
#else
wolfssl_linuxkm_pie_redirect_table.kmem_cache_alloc_trace =
kmem_cache_alloc_trace;
wolfssl_linuxkm_pie_redirect_table.kmalloc_order_trace =
kmalloc_order_trace;
#endif
wolfssl_linuxkm_pie_redirect_table.get_random_bytes = get_random_bytes;
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 0, 0)