Wind River Support Network

Description

In the Linux kernel, the following vulnerability has been resolved:[EOL][EOL]x86/MCE/AMD: Use an u64 for bank_map[EOL][EOL]Thee maximum number of MCA banks is 64 (MAX_NR_BANKS), see[EOL][EOL]  a0bc32b3cacf ("x86/mce: Increase maximum number of banks to 64").[EOL][EOL]However, the bank_map which contains a bitfield of which banks to[EOL]initialize is of type unsigned int and that overflows when those bit[EOL]numbers are >= 32, leading to UBSAN complaining correctly:[EOL][EOL]  UBSAN: shift-out-of-bounds in arch/x86/kernel/cpu/mce/amd.c:1365:38[EOL]  shift exponent 32 is too large for 32-bit type 'int'[EOL][EOL]Change the bank_map to a u64 and use the proper BIT_ULL() macro when[EOL]modifying bits in there.[EOL][EOL]  [ bp: Rewrite commit message. ]