[REVIEW][PATCH 19/26] signal: Explicitly call force_sig_fault on current

From: Eric W. Biederman
Date: Wed May 22 2019 - 20:46:27 EST

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Update the calls of force_sig_fault that pass in a variable that is
set to current earlier to explicitly use current.

This is to make the next change that removes the task parameter
from force_sig_fault easier to verify.

Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
---
arch/arc/kernel/traps.c | 2 +-
arch/arc/mm/fault.c | 4 ++--
arch/arm/mm/fault.c | 2 +-
arch/mips/mm/fault.c | 4 ++--
arch/nds32/kernel/traps.c | 2 +-
arch/nds32/mm/fault.c | 4 ++--
arch/openrisc/mm/fault.c | 4 ++--
arch/riscv/kernel/traps.c | 2 +-
arch/sh/math-emu/math.c | 2 +-
arch/unicore32/mm/fault.c | 2 +-
arch/x86/kernel/ptrace.c | 2 +-
arch/x86/kernel/traps.c | 4 ++--
arch/x86/kernel/umip.c | 2 +-
arch/x86/mm/fault.c | 6 +++---
14 files changed, 21 insertions(+), 21 deletions(-)

diff --git a/arch/arc/kernel/traps.c b/arch/arc/kernel/traps.c
index a7fcbc0d3943..e618fbb3e28d 100644
--- a/arch/arc/kernel/traps.c
+++ b/arch/arc/kernel/traps.c
@@ -50,7 +50,7 @@ unhandled_exception(const char *str, struct pt_regs *regs,

tsk->thread.fault_address = (__force unsigned int)addr;

- force_sig_fault(signo, si_code, addr, tsk);
+ force_sig_fault(signo, si_code, addr, current);

} else {
/* If not due to copy_(to|from)_user, we are doomed */
diff --git a/arch/arc/mm/fault.c b/arch/arc/mm/fault.c
index 8df1638259f3..d5d4758d7e75 100644
--- a/arch/arc/mm/fault.c
+++ b/arch/arc/mm/fault.c
@@ -202,7 +202,7 @@ void do_page_fault(unsigned long address, struct pt_regs *regs)
/* User mode accesses just cause a SIGSEGV */
if (user_mode(regs)) {
tsk->thread.fault_address = address;
- force_sig_fault(SIGSEGV, si_code, (void __user *)address, tsk);
+ force_sig_fault(SIGSEGV, si_code, (void __user *)address, current);
return;
}

@@ -237,5 +237,5 @@ void do_page_fault(unsigned long address, struct pt_regs *regs)
goto no_context;

tsk->thread.fault_address = address;
- force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, tsk);
+ force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, current);
}
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index 324def0279b2..03007ea4cc72 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -184,7 +184,7 @@ __do_user_fault(unsigned long addr, unsigned int fsr, unsigned int sig,
tsk->thread.address = addr;
tsk->thread.error_code = fsr;
tsk->thread.trap_no = 14;
- force_sig_fault(sig, code, (void __user *)addr, tsk);
+ force_sig_fault(sig, code, (void __user *)addr, current);
}

void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index 73d8a0f0b810..e63abd492f65 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -223,7 +223,7 @@ static void __kprobes __do_page_fault(struct pt_regs *regs, unsigned long write,
pr_cont("\n");
}
current->thread.trap_nr = (regs->cp0_cause >> 2) & 0x1f;
- force_sig_fault(SIGSEGV, si_code, (void __user *)address, tsk);
+ force_sig_fault(SIGSEGV, si_code, (void __user *)address, current);
return;
}

@@ -279,7 +279,7 @@ static void __kprobes __do_page_fault(struct pt_regs *regs, unsigned long write,
#endif
current->thread.trap_nr = (regs->cp0_cause >> 2) & 0x1f;
tsk->thread.cp0_badvaddr = address;
- force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, tsk);
+ force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, current);

return;
#ifndef CONFIG_64BIT
diff --git a/arch/nds32/kernel/traps.c b/arch/nds32/kernel/traps.c
index 66f197efcec9..a16e97f7bc75 100644
--- a/arch/nds32/kernel/traps.c
+++ b/arch/nds32/kernel/traps.c
@@ -263,7 +263,7 @@ static void send_sigtrap(struct pt_regs *regs, int error_code, int si_code)
tsk->thread.error_code = error_code;

force_sig_fault(SIGTRAP, si_code,
- (void __user *)instruction_pointer(regs), tsk);
+ (void __user *)instruction_pointer(regs), current);
}

void do_debug_trap(unsigned long entry, unsigned long addr,
diff --git a/arch/nds32/mm/fault.c b/arch/nds32/mm/fault.c
index 68d5f2a27f38..38441113c202 100644
--- a/arch/nds32/mm/fault.c
+++ b/arch/nds32/mm/fault.c
@@ -271,7 +271,7 @@ void do_page_fault(unsigned long entry, unsigned long addr,
tsk->thread.address = addr;
tsk->thread.error_code = error_code;
tsk->thread.trap_no = entry;
- force_sig_fault(SIGSEGV, si_code, (void __user *)addr, tsk);
+ force_sig_fault(SIGSEGV, si_code, (void __user *)addr, current);
return;
}

@@ -340,7 +340,7 @@ void do_page_fault(unsigned long entry, unsigned long addr,
tsk->thread.address = addr;
tsk->thread.error_code = error_code;
tsk->thread.trap_no = entry;
- force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)addr, tsk);
+ force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)addr, current);

return;

diff --git a/arch/openrisc/mm/fault.c b/arch/openrisc/mm/fault.c
index dc4dbafc1d83..f8b3a5a6ba3a 100644
--- a/arch/openrisc/mm/fault.c
+++ b/arch/openrisc/mm/fault.c
@@ -213,7 +213,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address,
/* User mode accesses just cause a SIGSEGV */

if (user_mode(regs)) {
- force_sig_fault(SIGSEGV, si_code, (void __user *)address, tsk);
+ force_sig_fault(SIGSEGV, si_code, (void __user *)address, current);
return;
}

@@ -278,7 +278,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address,
* Send a sigbus, regardless of whether we were in kernel
* or user mode.
*/
- force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, tsk);
+ force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, current);

/* Kernel mode? Handle exceptions or die */
if (!user_mode(regs))
diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c
index 71445a928c1b..6d67892dfc82 100644
--- a/arch/riscv/kernel/traps.c
+++ b/arch/riscv/kernel/traps.c
@@ -76,7 +76,7 @@ void do_trap(struct pt_regs *regs, int signo, int code, unsigned long addr)
show_regs(regs);
}

- force_sig_fault(signo, code, (void __user *)addr, tsk);
+ force_sig_fault(signo, code, (void __user *)addr, current);
}

static void do_trap_error(struct pt_regs *regs, int signo, int code,
diff --git a/arch/sh/math-emu/math.c b/arch/sh/math-emu/math.c
index a0fa8fc88739..fe261b0983cc 100644
--- a/arch/sh/math-emu/math.c
+++ b/arch/sh/math-emu/math.c
@@ -560,7 +560,7 @@ static int ieee_fpe_handler(struct pt_regs *regs)
task_thread_info(tsk)->status |= TS_USEDFPU;
} else {
force_sig_fault(SIGFPE, FPE_FLTINV,
- (void __user *)regs->pc, tsk);
+ (void __user *)regs->pc, current);
}

regs->pc = nextpc;
diff --git a/arch/unicore32/mm/fault.c b/arch/unicore32/mm/fault.c
index cadee0b3b4e0..313547a93513 100644
--- a/arch/unicore32/mm/fault.c
+++ b/arch/unicore32/mm/fault.c
@@ -124,7 +124,7 @@ static void __do_user_fault(unsigned long addr, unsigned int fsr,
tsk->thread.address = addr;
tsk->thread.error_code = fsr;
tsk->thread.trap_no = 14;
- force_sig_fault(sig, code, (void __user *)addr, tsk);
+ force_sig_fault(sig, code, (void __user *)addr, current);
}

void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 00148141f138..34d27b2dc7a1 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -1369,7 +1369,7 @@ void send_sigtrap(struct pt_regs *regs, int error_code, int si_code)

/* Send us the fake SIGTRAP */
force_sig_fault(SIGTRAP, si_code,
- user_mode(regs) ? (void __user *)regs->ip : NULL, tsk);
+ user_mode(regs) ? (void __user *)regs->ip : NULL, current);
}

void user_single_step_report(struct pt_regs *regs)
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 30a9b843ef04..945b9a0719dd 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -256,7 +256,7 @@ do_trap(int trapnr, int signr, char *str, struct pt_regs *regs,
if (!sicode)
force_sig(signr);
else
- force_sig_fault(signr, sicode, addr, tsk);
+ force_sig_fault(signr, sicode, addr, current);
}
NOKPROBE_SYMBOL(do_trap);

@@ -856,7 +856,7 @@ static void math_error(struct pt_regs *regs, int error_code, int trapnr)
return;

force_sig_fault(SIGFPE, si_code,
- (void __user *)uprobe_get_trap_addr(regs), task);
+ (void __user *)uprobe_get_trap_addr(regs), current);
}

dotraplinkage void do_coprocessor_error(struct pt_regs *regs, long error_code)
diff --git a/arch/x86/kernel/umip.c b/arch/x86/kernel/umip.c
index f8f3cfda01ae..68cdcd717c85 100644
--- a/arch/x86/kernel/umip.c
+++ b/arch/x86/kernel/umip.c
@@ -277,7 +277,7 @@ static void force_sig_info_umip_fault(void __user *addr, struct pt_regs *regs)
tsk->thread.error_code = X86_PF_USER | X86_PF_WRITE;
tsk->thread.trap_nr = X86_TRAP_PF;

- force_sig_fault(SIGSEGV, SEGV_MAPERR, addr, tsk);
+ force_sig_fault(SIGSEGV, SEGV_MAPERR, addr, current);

if (!(show_unhandled_signals && unhandled_signal(tsk, SIGSEGV)))
return;
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index c431326ee3fa..16a5d1b615a7 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -757,7 +757,7 @@ no_context(struct pt_regs *regs, unsigned long error_code,

/* XXX: hwpoison faults will set the wrong code. */
force_sig_fault(signal, si_code, (void __user *)address,
- tsk);
+ current);
}

/*
@@ -918,7 +918,7 @@ __bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code,
if (si_code == SEGV_PKUERR)
force_sig_pkuerr((void __user *)address, pkey);

- force_sig_fault(SIGSEGV, si_code, (void __user *)address, tsk);
+ force_sig_fault(SIGSEGV, si_code, (void __user *)address, current);

return;
}
@@ -1044,7 +1044,7 @@ do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address,
return;
}
#endif
- force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, tsk);
+ force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)address, current);
}

static noinline void
--
2.21.0

Next message: Eric W. Biederman: "[REVIEW][PATCH 20/26] signal: Use force_sig_fault_to_task for the two calls that don't deliver to current"
Previous message: Eric W. Biederman: "[REVIEW][PATCH 24/26] signal: Generate the siginfo in force_sig"
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