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kernel - don't print info about scheduled process if pagefault happened in kernel.

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This commit is contained in:
Ben Gras 2010-05-11 15:14:10 +00:00
parent 713454aca7
commit 7c5e1d1b29
1 changed files with 7 additions and 3 deletions
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10
kernel/arch/i386/exception.c
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@ -51,15 +51,19 @@ PRIVATE void pagefault( struct proc *pr,
pr->p_reg.pc = (reg_t) phys_copy_fault; pr->p_reg.pc = (reg_t) phys_copy_fault;
pr->p_reg.retreg = pagefaultcr2; pr->p_reg.retreg = pagefaultcr2;
} }
return; return;
} }
if(is_nested) {
panic("pagefault in kernel at address 0x%lx", pagefaultcr2);
}
/* System processes that don't have their own page table can't /* System processes that don't have their own page table can't
* have page faults. VM does have its own page table but also * have page faults. VM does have its own page table but also
* can't have page faults (because VM has to handle them). * can't have page faults (because VM has to handle them).
*/ */
if(is_nested || (pr->p_endpoint <= INIT_PROC_NR && if((pr->p_endpoint <= INIT_PROC_NR &&
!(pr->p_misc_flags & MF_FULLVM)) || pr->p_endpoint == VM_PROC_NR) { !(pr->p_misc_flags & MF_FULLVM)) || pr->p_endpoint == VM_PROC_NR) {
/* Page fault we can't / don't want to /* Page fault we can't / don't want to
* handle. * handle.
@ -70,7 +74,7 @@ PRIVATE void pagefault( struct proc *pr,
proc_stacktrace(pr); proc_stacktrace(pr);
printf("pc of pagefault: 0x%lx\n", frame->eip); printf("pc of pagefault: 0x%lx\n", frame->eip);
panic("page fault in system process: %d", pr->p_endpoint); panic("page fault in system process: %d", pr->p_endpoint);
return; return;
} }