stan/jdk-24
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

8338365: [PPC64, s390] Out-of-bounds array access in secondary_super_cache

Browse Source 
Reviewed-by: mdoerr, aph, rrich
This commit is contained in:
Amit Kumar 2024-08-20 09:54:20 +00:00
parent b9d49dcef2
commit 89ca5b6fbd
2 changed files with 4 additions and 6 deletions

6
src/hotspot/cpu/ppc/macroAssembler_ppc.cpp

@ -2170,7 +2170,6 @@ do { \
(result == R8_ARG6 || result == noreg), "registers must match ppc64.ad"); \
} while(0)
// Return true: we succeeded in generating this code
void MacroAssembler::lookup_secondary_supers_table(Register r_sub_klass,
Register r_super_klass,
Register temp1,
@ -2292,9 +2291,8 @@ void MacroAssembler::lookup_secondary_supers_table_slow_path(Register r_super_kl
// The bitmap is full to bursting.
// Implicit invariant: BITMAP_FULL implies (length > 0)
assert(Klass::SECONDARY_SUPERS_BITMAP_FULL == ~uintx(0), "");
cmpdi(CCR0, r_bitmap, -1);
beq(CCR0, L_huge);
cmpwi(CCR0, r_array_length, (int32_t)Klass::SECONDARY_SUPERS_TABLE_SIZE - 2);
bgt(CCR0, L_huge);
// NB! Our caller has checked bits 0 and 1 in the bitmap. The
// current slot (at secondary_supers[r_array_index]) has not yet

4
src/hotspot/cpu/s390/macroAssembler_s390.cpp

@ -3320,8 +3320,8 @@ void MacroAssembler::lookup_secondary_supers_table_slow_path(Register r_super_kl
NearLabel L_huge;
// The bitmap is full to bursting.
z_cghi(r_bitmap, Klass::SECONDARY_SUPERS_BITMAP_FULL);
z_bre(L_huge);
z_chi(r_array_length, Klass::SECONDARY_SUPERS_BITMAP_FULL - 2);
z_brh(L_huge);
// NB! Our caller has checked bits 0 and 1 in the bitmap. The
// current slot (at secondary_supers[r_array_index]) has not yet