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signal: Remove the task parameter from force_sig_fault

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As synchronous exceptions really only make sense against the current
task (otherwise how are you synchronous) remove the task parameter
from from force_sig_fault to make it explicit that is what is going
on.

The two known exceptions that deliver a synchronous exception to a
stopped ptraced task have already been changed to
force_sig_fault_to_task.

The callers have been changed with the following emacs regular expression
(with obvious variations on the architectures that take more arguments)
to avoid typos:

force_sig_fault[(]\([^,]+\)[,]\([^,]+\)[,]\([^,]+\)[,]\W+current[)]
->
force_sig_fault(\1,\2,\3)

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman
2019-05-23 11:04:24 -05:00
parent 91ca180dbd
commit 2e1661d267
67 changed files with 137 additions and 151 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
arch/parisc/kernel/traps.c
View File

@@ -275,7 +275,7 @@ void die_if_kernel(char *str, struct pt_regs *regs, long err)
static void handle_gdb_break(struct pt_regs *regs, int wot)
{
force_sig_fault(SIGTRAP, wot,
(void __user *) (regs->iaoq[0] & ~3), current);
(void __user *) (regs->iaoq[0] & ~3));
}
static void handle_break(struct pt_regs *regs)
@@ -609,13 +609,13 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
si_code = ILL_PRVREG;
give_sigill:
force_sig_fault(SIGILL, si_code,
(void __user *) regs->iaoq[0], current);
(void __user *) regs->iaoq[0]);
return;
case 12:
/* Overflow Trap, let the userland signal handler do the cleanup */
force_sig_fault(SIGFPE, FPE_INTOVF,
(void __user *) regs->iaoq[0], current);
(void __user *) regs->iaoq[0]);
return;
case 13:
@@ -627,7 +627,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
* to by si_addr.
*/
force_sig_fault(SIGFPE, FPE_CONDTRAP,
(void __user *) regs->iaoq[0], current);
(void __user *) regs->iaoq[0]);
return;
}
/* The kernel doesn't want to handle condition codes */
@@ -739,7 +739,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
force_sig_fault(SIGSEGV, SEGV_MAPERR,
(code == 7)?
((void __user *) regs->iaoq[0]) :
((void __user *) regs->ior), current);
((void __user *) regs->ior));
return;
case 28:
@@ -754,7 +754,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
task_pid_nr(current), current->comm);
/* SIGBUS, for lack of a better one. */
force_sig_fault(SIGBUS, BUS_OBJERR,
(void __user *)regs->ior, current);
(void __user *)regs->ior);
return;
}
pdc_chassis_send_status(PDC_CHASSIS_DIRECT_PANIC);
@@ -770,7 +770,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
code, fault_space,
task_pid_nr(current), current->comm);
force_sig_fault(SIGSEGV, SEGV_MAPERR,
(void __user *)regs->ior, current);
(void __user *)regs->ior);
return;
}
}

4
arch/parisc/kernel/unaligned.c
View File

@@ -690,14 +690,14 @@ void handle_unaligned(struct pt_regs *regs)
if (ret == ERR_PAGEFAULT)
{
force_sig_fault(SIGSEGV, SEGV_MAPERR,
(void __user *)regs->ior, current);
(void __user *)regs->ior);
}
else
{
force_sigbus:
/* couldn't handle it ... */
force_sig_fault(SIGBUS, BUS_ADRALN,
(void __user *)regs->ior, current);
(void __user *)regs->ior);
}
return;