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Kernel: Don't try to dump invalid code memory in page fault handler.

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This commit is contained in:
Andreas Kling 2019-01-30 20:18:50 +01:00
parent 3ebbefd916
commit 2a7af0eacf
1 changed files with 5 additions and 3 deletions
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8
Kernel/i386.cpp
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@ -263,8 +263,9 @@ void exception_14_handler(RegisterDumpWithExceptionCode& regs)
dbgprintf("eax=%x ebx=%x ecx=%x edx=%x\n", regs.eax, regs.ebx, regs.ecx, regs.edx); dbgprintf("eax=%x ebx=%x ecx=%x edx=%x\n", regs.eax, regs.ebx, regs.ecx, regs.edx);
dbgprintf("ebp=%x esp=%x esi=%x edi=%x\n", regs.ebp, esp, regs.esi, regs.edi); dbgprintf("ebp=%x esp=%x esi=%x edi=%x\n", regs.ebp, esp, regs.esi, regs.edi);
byte* codeptr = (byte*)regs.eip; if (current->validate_read((void*)regs.eip, 8)) {
dbgprintf("code: %b %b %b %b %b %b %b %b\n", byte* codeptr = (byte*)regs.eip;
dbgprintf("code: %b %b %b %b %b %b %b %b\n",
codeptr[0], codeptr[0],
codeptr[1], codeptr[1],
codeptr[2], codeptr[2],
@ -273,7 +274,8 @@ void exception_14_handler(RegisterDumpWithExceptionCode& regs)
codeptr[5], codeptr[5],
codeptr[6], codeptr[6],
codeptr[7] codeptr[7]
); );
}
}; };
if (current->isRing0()) { if (current->isRing0()) {