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Workaround UBSAN errors for variable arrays

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This gets around UBSAN errors when using arrays at the end of
structs.  It converts some zero-length arrays to variable length
arrays and disables UBSAN checking on certain modules.

It is based off of the patch from #15460.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Tested-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Co-authored-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Issue #15145
Closes #15510
This commit is contained in:
Tony Hutter
2023-11-12 16:26:07 -08:00
parent f1659cc782
commit e92a680c70
3 changed files with 7 additions and 3 deletions
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include/os/linux/spl/sys/kmem_cache.h
+1 -1
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@@ -108,7 +108,7 @@ typedef struct spl_kmem_magazine {
uint32_t skm_refill; /* Batch refill size */
struct spl_kmem_cache *skm_cache; /* Owned by cache */
unsigned int skm_cpu; /* Owned by cpu */
void *skm_objs[0]; /* Object pointers */
void *skm_objs[]; /* Object pointers */
} spl_kmem_magazine_t;
typedef struct spl_kmem_obj {