c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2024-12-25 18:59:33 +03:00
Code Issues Packages Projects Releases Wiki Activity

Workaround UBSAN errors for variable arrays

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/os/linux/spl/sys/kmem_cache.h
View File

@ -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 {

4
include/sys/vdev_raidz_impl.h
View File

@ -130,7 +130,7 @@ typedef struct raidz_row {
uint64_t rr_offset; /* Logical offset for *_io_verify() */
uint64_t rr_size; /* Physical size for *_io_verify() */
#endif
raidz_col_t rr_col[0]; /* Flexible array of I/O columns */
raidz_col_t rr_col[]; /* Flexible array of I/O columns */
} raidz_row_t;
typedef struct raidz_map {
@ -139,7 +139,7 @@ typedef struct raidz_map {
int rm_nskip; /* RAIDZ sectors skipped for padding */
int rm_skipstart; /* Column index of padding start */
const raidz_impl_ops_t *rm_ops; /* RAIDZ math operations */
raidz_row_t *rm_row[0]; /* flexible array of rows */
raidz_row_t *rm_row[]; /* flexible array of rows */
} raidz_map_t;

4
module/Kbuild.in
View File

@ -488,6 +488,10 @@ zfs-$(CONFIG_ARM64) += $(addprefix zfs/,$(ZFS_OBJS_ARM64))
zfs-$(CONFIG_PPC) += $(addprefix zfs/,$(ZFS_OBJS_PPC_PPC64))
zfs-$(CONFIG_PPC64) += $(addprefix zfs/,$(ZFS_OBJS_PPC_PPC64))
UBSAN_SANITIZE_zap_leaf.o := n
UBSAN_SANITIZE_zap_micro.o := n
UBSAN_SANITIZE_sa.o := n
# Suppress incorrect warnings from versions of objtool which are not
# aware of x86 EVEX prefix instructions used for AVX512.
OBJECT_FILES_NON_STANDARD_vdev_raidz_math_avx512bw.o := y