static inline bool is_el1_permission_fault(unsigned long addr, unsigned long esr,
struct pt_regs *regs)
{
- unsigned long fsc_type = esr & ESR_ELx_FSC_TYPE;
-
if (!is_el1_data_abort(esr) && !is_el1_instruction_abort(esr))
return false;
- if (fsc_type == ESR_ELx_FSC_PERM)
+ if (esr_fsc_is_permission_fault(esr))
return true;
if (is_ttbr0_addr(addr) && system_uses_ttbr0_pan())
- return fsc_type == ESR_ELx_FSC_FAULT &&
+ return esr_fsc_is_translation_fault(esr) &&
(regs->pstate & PSR_PAN_BIT);
return false;
unsigned long flags;
u64 par, dfsc;
- if (!is_el1_data_abort(esr) ||
- (esr & ESR_ELx_FSC_TYPE) != ESR_ELx_FSC_FAULT)
+ if (!is_el1_data_abort(esr) || !esr_fsc_is_translation_fault(esr))
return false;
local_irq_save(flags);
* treat the translation fault as spurious.
*/
dfsc = FIELD_GET(SYS_PAR_EL1_FST, par);
- return (dfsc & ESR_ELx_FSC_TYPE) != ESR_ELx_FSC_FAULT;
+ return !esr_fsc_is_translation_fault(dfsc);
}
static void die_kernel_fault(const char *msg, unsigned long addr,
return false;
}
-static bool is_translation_fault(unsigned long esr)
-{
- return (esr & ESR_ELx_FSC_TYPE) == ESR_ELx_FSC_FAULT;
-}
-
static void __do_kernel_fault(unsigned long addr, unsigned long esr,
struct pt_regs *regs)
{
} else if (addr < PAGE_SIZE) {
msg = "NULL pointer dereference";
} else {
- if (is_translation_fault(esr) &&
+ if (esr_fsc_is_translation_fault(esr) &&
kfence_handle_page_fault(addr, esr & ESR_ELx_WNR, regs))
return;
{ do_translation_fault, SIGSEGV, SEGV_MAPERR, "level 1 translation fault" },
{ do_translation_fault, SIGSEGV, SEGV_MAPERR, "level 2 translation fault" },
{ do_translation_fault, SIGSEGV, SEGV_MAPERR, "level 3 translation fault" },
- { do_bad, SIGKILL, SI_KERNEL, "unknown 8" },
+ { do_page_fault, SIGSEGV, SEGV_ACCERR, "level 0 access flag fault" },
{ do_page_fault, SIGSEGV, SEGV_ACCERR, "level 1 access flag fault" },
{ do_page_fault, SIGSEGV, SEGV_ACCERR, "level 2 access flag fault" },
{ do_page_fault, SIGSEGV, SEGV_ACCERR, "level 3 access flag fault" },
- { do_bad, SIGKILL, SI_KERNEL, "unknown 12" },
+ { do_page_fault, SIGSEGV, SEGV_ACCERR, "level 0 permission fault" },
{ do_page_fault, SIGSEGV, SEGV_ACCERR, "level 1 permission fault" },
{ do_page_fault, SIGSEGV, SEGV_ACCERR, "level 2 permission fault" },
{ do_page_fault, SIGSEGV, SEGV_ACCERR, "level 3 permission fault" },
{ do_sea, SIGBUS, BUS_OBJERR, "synchronous external abort" },
{ do_tag_check_fault, SIGSEGV, SEGV_MTESERR, "synchronous tag check fault" },
{ do_bad, SIGKILL, SI_KERNEL, "unknown 18" },
- { do_bad, SIGKILL, SI_KERNEL, "unknown 19" },
+ { do_sea, SIGKILL, SI_KERNEL, "level -1 (translation table walk)" },
{ do_sea, SIGKILL, SI_KERNEL, "level 0 (translation table walk)" },
{ do_sea, SIGKILL, SI_KERNEL, "level 1 (translation table walk)" },
{ do_sea, SIGKILL, SI_KERNEL, "level 2 (translation table walk)" },
{ do_sea, SIGBUS, BUS_OBJERR, "synchronous parity or ECC error" }, // Reserved when RAS is implemented
{ do_bad, SIGKILL, SI_KERNEL, "unknown 25" },
{ do_bad, SIGKILL, SI_KERNEL, "unknown 26" },
- { do_bad, SIGKILL, SI_KERNEL, "unknown 27" },
+ { do_sea, SIGKILL, SI_KERNEL, "level -1 synchronous parity error (translation table walk)" }, // Reserved when RAS is implemented
{ do_sea, SIGKILL, SI_KERNEL, "level 0 synchronous parity error (translation table walk)" }, // Reserved when RAS is implemented
{ do_sea, SIGKILL, SI_KERNEL, "level 1 synchronous parity error (translation table walk)" }, // Reserved when RAS is implemented
{ do_sea, SIGKILL, SI_KERNEL, "level 2 synchronous parity error (translation table walk)" }, // Reserved when RAS is implemented
{ do_bad, SIGKILL, SI_KERNEL, "unknown 38" },
{ do_bad, SIGKILL, SI_KERNEL, "unknown 39" },
{ do_bad, SIGKILL, SI_KERNEL, "unknown 40" },
- { do_bad, SIGKILL, SI_KERNEL, "unknown 41" },
+ { do_bad, SIGKILL, SI_KERNEL, "level -1 address size fault" },
{ do_bad, SIGKILL, SI_KERNEL, "unknown 42" },
- { do_bad, SIGKILL, SI_KERNEL, "unknown 43" },
+ { do_translation_fault, SIGSEGV, SEGV_MAPERR, "level -1 translation fault" },
{ do_bad, SIGKILL, SI_KERNEL, "unknown 44" },
{ do_bad, SIGKILL, SI_KERNEL, "unknown 45" },
{ do_bad, SIGKILL, SI_KERNEL, "unknown 46" },