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Fix bug in malloc_uninit():

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Releasing items from the mt_zone can not be done by a simple
uma_zfree() call since mt_zone is allocated with the UMA_ZONE_MALLOC
flag. Use uma_zfree_arg instead and supply the slab.

This bug caused panics in low memory situations on unloading kernel
modules containing MALLOC_DEFINE(..) statements.

Submitted by:	ups
This commit is contained in:
Paul Saab 2006-03-03 22:36:52 +00:00
parent 375ce6798f
commit 45d48bdad5
1 changed files with 3 additions and 1 deletions
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4
sys/kern/kern_malloc.c
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@ -622,6 +622,7 @@ malloc_uninit(void *data)
struct malloc_type_internal *mtip;
struct malloc_type_stats *mtsp;
struct malloc_type *mtp, *temp;
uma_slab_t slab;
long temp_allocs, temp_bytes;
int i;
@ -658,7 +659,8 @@ malloc_uninit(void *data)
temp_allocs, temp_bytes);
}
uma_zfree(mt_zone, mtip);
slab = vtoslab((vm_offset_t) mtip & (~UMA_SLAB_MASK));
uma_zfree_arg(mt_zone, mtip, slab);
}
struct malloc_type *