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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

2
arch/sparc/kernel/process_64.c
View file

@ -519,7 +519,7 @@ void synchronize_user_stack(void)
static void stack_unaligned(unsigned long sp)
{
force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *) sp, 0, current);
force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *) sp, 0);
}
static const char uwfault32[] = KERN_INFO \

2
arch/sparc/kernel/sys_sparc_32.c
View file

@ -151,7 +151,7 @@ sparc_breakpoint (struct pt_regs *regs)
#ifdef DEBUG_SPARC_BREAKPOINT
printk ("TRAP: Entering kernel PC=%x, nPC=%x\n", regs->pc, regs->npc);
#endif
force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc, 0, current);
force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc, 0);
#ifdef DEBUG_SPARC_BREAKPOINT
printk ("TRAP: Returning to space: PC=%x nPC=%x\n", regs->pc, regs->npc);

2
arch/sparc/kernel/sys_sparc_64.c
View file

@ -511,7 +511,7 @@ asmlinkage void sparc_breakpoint(struct pt_regs *regs)
#ifdef DEBUG_SPARC_BREAKPOINT
printk ("TRAP: Entering kernel PC=%lx, nPC=%lx\n", regs->tpc, regs->tnpc);
#endif
force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->tpc, 0, current);
force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->tpc, 0);
#ifdef DEBUG_SPARC_BREAKPOINT
printk ("TRAP: Returning to space: PC=%lx nPC=%lx\n", regs->tpc, regs->tnpc);
#endif

4
arch/sparc/kernel/traps_32.c
View file

@ -103,7 +103,7 @@ void do_hw_interrupt(struct pt_regs *regs, unsigned long type)
die_if_kernel("Kernel bad trap", regs);
force_sig_fault(SIGILL, ILL_ILLTRP,
(void __user *)regs->pc, type - 0x80, current);
(void __user *)regs->pc, type - 0x80);
}
void do_illegal_instruction(struct pt_regs *regs, unsigned long pc, unsigned long npc,
@ -327,7 +327,7 @@ void handle_reg_access(struct pt_regs *regs, unsigned long pc, unsigned long npc
printk("Register Access Exception at PC %08lx NPC %08lx PSR %08lx\n",
pc, npc, psr);
#endif
force_sig_fault(SIGBUS, BUS_OBJERR, (void __user *)pc, 0, current);
force_sig_fault(SIGBUS, BUS_OBJERR, (void __user *)pc, 0);
}
void handle_cp_disabled(struct pt_regs *regs, unsigned long pc, unsigned long npc,

39
arch/sparc/kernel/traps_64.c
View file

@ -107,7 +107,7 @@ void bad_trap(struct pt_regs *regs, long lvl)
regs->tnpc &= 0xffffffff;
}
force_sig_fault(SIGILL, ILL_ILLTRP,
(void __user *)regs->tpc, lvl, current);
(void __user *)regs->tpc, lvl);
}
void bad_trap_tl1(struct pt_regs *regs, long lvl)
@ -201,7 +201,7 @@ void spitfire_insn_access_exception(struct pt_regs *regs, unsigned long sfsr, un
regs->tnpc &= 0xffffffff;
}
force_sig_fault(SIGSEGV, SEGV_MAPERR,
(void __user *)regs->tpc, 0, current);
(void __user *)regs->tpc, 0);
out:
exception_exit(prev_state);
}
@ -236,7 +236,7 @@ void sun4v_insn_access_exception(struct pt_regs *regs, unsigned long addr, unsig
regs->tpc &= 0xffffffff;
regs->tnpc &= 0xffffffff;
}
force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *) addr, 0, current);
force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *) addr, 0);
}
void sun4v_insn_access_exception_tl1(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
@ -321,7 +321,7 @@ void spitfire_data_access_exception(struct pt_regs *regs, unsigned long sfsr, un
if (is_no_fault_exception(regs))
return;
force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *)sfar, 0, current);
force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *)sfar, 0);
out:
exception_exit(prev_state);
}
@ -385,16 +385,13 @@ void sun4v_data_access_exception(struct pt_regs *regs, unsigned long addr, unsig
*/
switch (type) {
case HV_FAULT_TYPE_INV_ASI:
force_sig_fault(SIGILL, ILL_ILLADR, (void __user *)addr, 0,
current);
force_sig_fault(SIGILL, ILL_ILLADR, (void __user *)addr, 0);
break;
case HV_FAULT_TYPE_MCD_DIS:
force_sig_fault(SIGSEGV, SEGV_ACCADI, (void __user *)addr, 0,
current);
force_sig_fault(SIGSEGV, SEGV_ACCADI, (void __user *)addr, 0);
break;
default:
force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *)addr, 0,
current);
force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *)addr, 0);
break;
}
}
@ -571,7 +568,7 @@ static void spitfire_ue_log(unsigned long afsr, unsigned long afar, unsigned lon
regs->tpc &= 0xffffffff;
regs->tnpc &= 0xffffffff;
}
force_sig_fault(SIGBUS, BUS_OBJERR, (void *)0, 0, current);
force_sig_fault(SIGBUS, BUS_OBJERR, (void *)0, 0);
}
void spitfire_access_error(struct pt_regs *regs, unsigned long status_encoded, unsigned long afar)
@ -2073,7 +2070,7 @@ void do_mcd_err(struct pt_regs *regs, struct sun4v_error_entry ent)
* code
*/
force_sig_fault(SIGSEGV, SEGV_ADIDERR, (void __user *)ent.err_raddr,
0, current);
0);
}
/* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate.
@ -2187,7 +2184,7 @@ bool sun4v_nonresum_error_user_handled(struct pt_regs *regs,
}
if (attrs & SUN4V_ERR_ATTRS_PIO) {
force_sig_fault(SIGBUS, BUS_ADRERR,
(void __user *)sun4v_get_vaddr(regs), 0, current);
(void __user *)sun4v_get_vaddr(regs), 0);
return true;
}
@ -2344,7 +2341,7 @@ static void do_fpe_common(struct pt_regs *regs)
code = FPE_FLTRES;
}
force_sig_fault(SIGFPE, code,
(void __user *)regs->tpc, 0, current);
(void __user *)regs->tpc, 0);
}
}
@ -2399,7 +2396,7 @@ void do_tof(struct pt_regs *regs)
regs->tnpc &= 0xffffffff;
}
force_sig_fault(SIGEMT, EMT_TAGOVF,
(void __user *)regs->tpc, 0, current);
(void __user *)regs->tpc, 0);
out:
exception_exit(prev_state);
}
@ -2419,7 +2416,7 @@ void do_div0(struct pt_regs *regs)
regs->tnpc &= 0xffffffff;
}
force_sig_fault(SIGFPE, FPE_INTDIV,
(void __user *)regs->tpc, 0, current);
(void __user *)regs->tpc, 0);
out:
exception_exit(prev_state);
}
@ -2615,7 +2612,7 @@ void do_illegal_instruction(struct pt_regs *regs)
}
}
}
force_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)pc, 0, current);
force_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)pc, 0);
out:
exception_exit(prev_state);
}
@ -2635,7 +2632,7 @@ void mem_address_unaligned(struct pt_regs *regs, unsigned long sfar, unsigned lo
if (is_no_fault_exception(regs))
return;
force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *)sfar, 0, current);
force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *)sfar, 0);
out:
exception_exit(prev_state);
}
@ -2653,7 +2650,7 @@ void sun4v_do_mna(struct pt_regs *regs, unsigned long addr, unsigned long type_c
if (is_no_fault_exception(regs))
return;
force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *) addr, 0, current);
force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *) addr, 0);
}
/* sun4v_mem_corrupt_detect_precise() - Handle precise exception on an ADI
@ -2700,7 +2697,7 @@ void sun4v_mem_corrupt_detect_precise(struct pt_regs *regs, unsigned long addr,
regs->tpc &= 0xffffffff;
regs->tnpc &= 0xffffffff;
}
force_sig_fault(SIGSEGV, SEGV_ADIPERR, (void __user *)addr, 0, current);
force_sig_fault(SIGSEGV, SEGV_ADIPERR, (void __user *)addr, 0);
}
void do_privop(struct pt_regs *regs)
@ -2716,7 +2713,7 @@ void do_privop(struct pt_regs *regs)
regs->tnpc &= 0xffffffff;
}
force_sig_fault(SIGILL, ILL_PRVOPC,
(void __user *)regs->tpc, 0, current);
(void __user *)regs->tpc, 0);
out:
exception_exit(prev_state);
}