diff options
| author | Simon J. Gerraty <sjg@FreeBSD.org> | 2020-08-29 21:05:43 +0000 |
|---|---|---|
| committer | Simon J. Gerraty <sjg@FreeBSD.org> | 2020-08-29 21:05:43 +0000 |
| commit | ed19b7c5259d293e42ca4fc7c9eaa29cfcdcfbf3 (patch) | |
| tree | b2e53a71fbad08b676a1f568e6f1ae263c16854e /stand/libsa/zalloc_malloc.c | |
| parent | 5d4bf0578f0c665f2f28f8ca0970a3368fad6e7b (diff) | |
Notes
Diffstat (limited to 'stand/libsa/zalloc_malloc.c')
| -rw-r--r-- | stand/libsa/zalloc_malloc.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/stand/libsa/zalloc_malloc.c b/stand/libsa/zalloc_malloc.c index 98e28b8ef7f5..215e07d34a84 100644 --- a/stand/libsa/zalloc_malloc.c +++ b/stand/libsa/zalloc_malloc.c @@ -52,6 +52,10 @@ void mallocstats(void); static void *Malloc_align(size_t, size_t); +#ifndef MIN +# define MIN(a,b) ((a) <= (b)) ? (a) : (b) +#endif + void * Malloc(size_t bytes, const char *file __unused, int line __unused) { @@ -119,9 +123,14 @@ Free(void *ptr, const char *file, int line) ptr, file, line); return; } - if (res->ga_Magic != GAMAGIC) + if (res->ga_Magic != GAMAGIC) { + size_t dump_bytes; + + dump_bytes = MIN((ptr - MallocPool.mp_Base), 512); + hexdump(ptr - dump_bytes, dump_bytes); panic("free: guard1 fail @ %p from %s:%d", ptr, file, line); + } res->ga_Magic = GAFREE; #endif #ifdef USEENDGUARD |