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authorLinus Torvalds <torvalds@linux-foundation.org>2021-09-01 14:42:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-01 14:42:36 -0700
commit48983701a1e0e252faa4aab274ba14419cb286fa (patch)
treeebbd73db84e96a31a44f92226e5245dd09ffad06 /arch
parentMerge tag 'drm-next-2021-08-31-1' of git://anongit.freedesktop.org/drm/drm (diff)
parentFinal si_trapno bits (diff)
downloadlinux-dev-48983701a1e0e252faa4aab274ba14419cb286fa.tar.xz
linux-dev-48983701a1e0e252faa4aab274ba14419cb286fa.zip
Merge branch 'siginfo-si_trapno-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull siginfo si_trapno updates from Eric Biederman: "The full set of si_trapno changes was not appropriate as a fix for the newly added SIGTRAP TRAP_PERF, and so I postponed the rest of the related cleanups. This is the rest of the cleanups for si_trapno that reduces it from being a really weird arch special case that is expect to be always present (but isn't) on the architectures that support it to being yet another field in the _sigfault union of struct siginfo. The changes have been reviewed and marinated in linux-next. With the removal of this awkward special case new code (like SIGTRAP TRAP_PERF) that works across architectures should be easier to write and maintain" * 'siginfo-si_trapno-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: signal: Rename SIL_PERF_EVENT SIL_FAULT_PERF_EVENT for consistency signal: Verify the alignment and size of siginfo_t signal: Remove the generic __ARCH_SI_TRAPNO support signal/alpha: si_trapno is only used with SIGFPE and SIGTRAP TRAP_UNK signal/sparc: si_trapno is only used with SIGILL ILL_ILLTRP arm64: Add compile-time asserts for siginfo_t offsets arm: Add compile-time asserts for siginfo_t offsets sparc64: Add compile-time asserts for siginfo_t offsets
Diffstat (limited to 'arch')
-rw-r--r--arch/alpha/include/uapi/asm/siginfo.h2
-rw-r--r--arch/alpha/kernel/osf_sys.c2
-rw-r--r--arch/alpha/kernel/signal.c4
-rw-r--r--arch/alpha/kernel/traps.c26
-rw-r--r--arch/alpha/mm/fault.c4
-rw-r--r--arch/arm/kernel/signal.c39
-rw-r--r--arch/arm64/kernel/signal.c39
-rw-r--r--arch/arm64/kernel/signal32.c39
-rw-r--r--arch/mips/include/uapi/asm/siginfo.h2
-rw-r--r--arch/sparc/include/uapi/asm/siginfo.h3
-rw-r--r--arch/sparc/kernel/process_64.c2
-rw-r--r--arch/sparc/kernel/signal32.c37
-rw-r--r--arch/sparc/kernel/signal_64.c36
-rw-r--r--arch/sparc/kernel/sys_sparc_32.c2
-rw-r--r--arch/sparc/kernel/sys_sparc_64.c2
-rw-r--r--arch/sparc/kernel/traps_32.c22
-rw-r--r--arch/sparc/kernel/traps_64.c44
-rw-r--r--arch/sparc/kernel/unaligned_32.c2
-rw-r--r--arch/sparc/mm/fault_32.c2
-rw-r--r--arch/sparc/mm/fault_64.c2
-rw-r--r--arch/x86/kernel/signal_compat.c6
21 files changed, 250 insertions, 67 deletions
diff --git a/arch/alpha/include/uapi/asm/siginfo.h b/arch/alpha/include/uapi/asm/siginfo.h
index 6e1a2af2f962..e08eae88182b 100644
--- a/arch/alpha/include/uapi/asm/siginfo.h
+++ b/arch/alpha/include/uapi/asm/siginfo.h
@@ -2,8 +2,6 @@
#ifndef _ALPHA_SIGINFO_H
#define _ALPHA_SIGINFO_H
-#define __ARCH_SI_TRAPNO
-
#include <asm-generic/siginfo.h>
#endif
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index d31167e3269c..8bbeebb73cf0 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -876,7 +876,7 @@ SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer,
if (fex & IEEE_TRAP_ENABLE_DZE) si_code = FPE_FLTDIV;
if (fex & IEEE_TRAP_ENABLE_INV) si_code = FPE_FLTINV;
- send_sig_fault(SIGFPE, si_code,
+ send_sig_fault_trapno(SIGFPE, si_code,
(void __user *)NULL, /* FIXME */
0, current);
}
diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c
index 948b89789da8..bc077babafab 100644
--- a/arch/alpha/kernel/signal.c
+++ b/arch/alpha/kernel/signal.c
@@ -219,7 +219,7 @@ do_sigreturn(struct sigcontext __user *sc)
/* Send SIGTRAP if we're single-stepping: */
if (ptrace_cancel_bpt (current)) {
- send_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *) regs->pc, 0,
+ send_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *) regs->pc,
current);
}
return;
@@ -247,7 +247,7 @@ do_rt_sigreturn(struct rt_sigframe __user *frame)
/* Send SIGTRAP if we're single-stepping: */
if (ptrace_cancel_bpt (current)) {
- send_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *) regs->pc, 0,
+ send_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *) regs->pc,
current);
}
return;
diff --git a/arch/alpha/kernel/traps.c b/arch/alpha/kernel/traps.c
index 5398f982bdd1..e805106409f7 100644
--- a/arch/alpha/kernel/traps.c
+++ b/arch/alpha/kernel/traps.c
@@ -227,7 +227,7 @@ do_entArith(unsigned long summary, unsigned long write_mask,
}
die_if_kernel("Arithmetic fault", regs, 0, NULL);
- send_sig_fault(SIGFPE, si_code, (void __user *) regs->pc, 0, current);
+ send_sig_fault_trapno(SIGFPE, si_code, (void __user *) regs->pc, 0, current);
}
asmlinkage void
@@ -268,13 +268,13 @@ do_entIF(unsigned long type, struct pt_regs *regs)
regs->pc -= 4; /* make pc point to former bpt */
}
- send_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc, 0,
+ send_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc,
current);
return;
case 1: /* bugcheck */
- send_sig_fault(SIGTRAP, TRAP_UNK, (void __user *) regs->pc, 0,
- current);
+ send_sig_fault_trapno(SIGTRAP, TRAP_UNK,
+ (void __user *) regs->pc, 0, current);
return;
case 2: /* gentrap */
@@ -335,8 +335,8 @@ do_entIF(unsigned long type, struct pt_regs *regs)
break;
}
- send_sig_fault(signo, code, (void __user *) regs->pc, regs->r16,
- current);
+ send_sig_fault_trapno(signo, code, (void __user *) regs->pc,
+ regs->r16, current);
return;
case 4: /* opDEC */
@@ -360,9 +360,9 @@ do_entIF(unsigned long type, struct pt_regs *regs)
if (si_code == 0)
return;
if (si_code > 0) {
- send_sig_fault(SIGFPE, si_code,
- (void __user *) regs->pc, 0,
- current);
+ send_sig_fault_trapno(SIGFPE, si_code,
+ (void __user *) regs->pc,
+ 0, current);
return;
}
}
@@ -387,7 +387,7 @@ do_entIF(unsigned long type, struct pt_regs *regs)
;
}
- send_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)regs->pc, 0, current);
+ send_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)regs->pc, current);
}
/* There is an ifdef in the PALcode in MILO that enables a
@@ -402,7 +402,7 @@ do_entDbg(struct pt_regs *regs)
{
die_if_kernel("Instruction fault", regs, 0, NULL);
- force_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)regs->pc, 0);
+ force_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)regs->pc);
}
@@ -964,12 +964,12 @@ give_sigsegv:
si_code = SEGV_MAPERR;
mmap_read_unlock(mm);
}
- send_sig_fault(SIGSEGV, si_code, va, 0, current);
+ send_sig_fault(SIGSEGV, si_code, va, current);
return;
give_sigbus:
regs->pc -= 4;
- send_sig_fault(SIGBUS, BUS_ADRALN, va, 0, current);
+ send_sig_fault(SIGBUS, BUS_ADRALN, va, current);
return;
}
diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c
index 09172f017efc..eee5102c3d88 100644
--- a/arch/alpha/mm/fault.c
+++ b/arch/alpha/mm/fault.c
@@ -219,13 +219,13 @@ retry:
mmap_read_unlock(mm);
/* Send a sigbus, regardless of whether we were in kernel
or user mode. */
- force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *) address, 0);
+ force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *) address);
if (!user_mode(regs))
goto no_context;
return;
do_sigsegv:
- force_sig_fault(SIGSEGV, si_code, (void __user *) address, 0);
+ force_sig_fault(SIGSEGV, si_code, (void __user *) address);
return;
#ifdef CONFIG_ALPHA_LARGE_VMALLOC
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index a3a38d0a4c85..f3800c0f428b 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -725,3 +725,42 @@ asmlinkage void do_rseq_syscall(struct pt_regs *regs)
rseq_syscall(regs);
}
#endif
+
+/*
+ * Compile-time assertions for siginfo_t offsets. Check NSIG* as well, as
+ * changes likely come with new fields that should be added below.
+ */
+static_assert(NSIGILL == 11);
+static_assert(NSIGFPE == 15);
+static_assert(NSIGSEGV == 9);
+static_assert(NSIGBUS == 5);
+static_assert(NSIGTRAP == 6);
+static_assert(NSIGCHLD == 6);
+static_assert(NSIGSYS == 2);
+static_assert(sizeof(siginfo_t) == 128);
+static_assert(__alignof__(siginfo_t) == 4);
+static_assert(offsetof(siginfo_t, si_signo) == 0x00);
+static_assert(offsetof(siginfo_t, si_errno) == 0x04);
+static_assert(offsetof(siginfo_t, si_code) == 0x08);
+static_assert(offsetof(siginfo_t, si_pid) == 0x0c);
+static_assert(offsetof(siginfo_t, si_uid) == 0x10);
+static_assert(offsetof(siginfo_t, si_tid) == 0x0c);
+static_assert(offsetof(siginfo_t, si_overrun) == 0x10);
+static_assert(offsetof(siginfo_t, si_status) == 0x14);
+static_assert(offsetof(siginfo_t, si_utime) == 0x18);
+static_assert(offsetof(siginfo_t, si_stime) == 0x1c);
+static_assert(offsetof(siginfo_t, si_value) == 0x14);
+static_assert(offsetof(siginfo_t, si_int) == 0x14);
+static_assert(offsetof(siginfo_t, si_ptr) == 0x14);
+static_assert(offsetof(siginfo_t, si_addr) == 0x0c);
+static_assert(offsetof(siginfo_t, si_addr_lsb) == 0x10);
+static_assert(offsetof(siginfo_t, si_lower) == 0x14);
+static_assert(offsetof(siginfo_t, si_upper) == 0x18);
+static_assert(offsetof(siginfo_t, si_pkey) == 0x14);
+static_assert(offsetof(siginfo_t, si_perf_data) == 0x10);
+static_assert(offsetof(siginfo_t, si_perf_type) == 0x14);
+static_assert(offsetof(siginfo_t, si_band) == 0x0c);
+static_assert(offsetof(siginfo_t, si_fd) == 0x10);
+static_assert(offsetof(siginfo_t, si_call_addr) == 0x0c);
+static_assert(offsetof(siginfo_t, si_syscall) == 0x10);
+static_assert(offsetof(siginfo_t, si_arch) == 0x14);
diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
index 23036334f4dc..1a0e2b56378b 100644
--- a/arch/arm64/kernel/signal.c
+++ b/arch/arm64/kernel/signal.c
@@ -1000,3 +1000,42 @@ void __init minsigstksz_setup(void)
round_up(sizeof(struct frame_record), 16) +
16; /* max alignment padding */
}
+
+/*
+ * Compile-time assertions for siginfo_t offsets. Check NSIG* as well, as
+ * changes likely come with new fields that should be added below.
+ */
+static_assert(NSIGILL == 11);
+static_assert(NSIGFPE == 15);
+static_assert(NSIGSEGV == 9);
+static_assert(NSIGBUS == 5);
+static_assert(NSIGTRAP == 6);
+static_assert(NSIGCHLD == 6);
+static_assert(NSIGSYS == 2);
+static_assert(sizeof(siginfo_t) == 128);
+static_assert(__alignof__(siginfo_t) == 8);
+static_assert(offsetof(siginfo_t, si_signo) == 0x00);
+static_assert(offsetof(siginfo_t, si_errno) == 0x04);
+static_assert(offsetof(siginfo_t, si_code) == 0x08);
+static_assert(offsetof(siginfo_t, si_pid) == 0x10);
+static_assert(offsetof(siginfo_t, si_uid) == 0x14);
+static_assert(offsetof(siginfo_t, si_tid) == 0x10);
+static_assert(offsetof(siginfo_t, si_overrun) == 0x14);
+static_assert(offsetof(siginfo_t, si_status) == 0x18);
+static_assert(offsetof(siginfo_t, si_utime) == 0x20);
+static_assert(offsetof(siginfo_t, si_stime) == 0x28);
+static_assert(offsetof(siginfo_t, si_value) == 0x18);
+static_assert(offsetof(siginfo_t, si_int) == 0x18);
+static_assert(offsetof(siginfo_t, si_ptr) == 0x18);
+static_assert(offsetof(siginfo_t, si_addr) == 0x10);
+static_assert(offsetof(siginfo_t, si_addr_lsb) == 0x18);
+static_assert(offsetof(siginfo_t, si_lower) == 0x20);
+static_assert(offsetof(siginfo_t, si_upper) == 0x28);
+static_assert(offsetof(siginfo_t, si_pkey) == 0x20);
+static_assert(offsetof(siginfo_t, si_perf_data) == 0x18);
+static_assert(offsetof(siginfo_t, si_perf_type) == 0x20);
+static_assert(offsetof(siginfo_t, si_band) == 0x10);
+static_assert(offsetof(siginfo_t, si_fd) == 0x18);
+static_assert(offsetof(siginfo_t, si_call_addr) == 0x10);
+static_assert(offsetof(siginfo_t, si_syscall) == 0x18);
+static_assert(offsetof(siginfo_t, si_arch) == 0x1c);
diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c
index 2f507f565c48..d3be01c46bec 100644
--- a/arch/arm64/kernel/signal32.c
+++ b/arch/arm64/kernel/signal32.c
@@ -457,3 +457,42 @@ void compat_setup_restart_syscall(struct pt_regs *regs)
{
regs->regs[7] = __NR_compat_restart_syscall;
}
+
+/*
+ * Compile-time assertions for siginfo_t offsets. Check NSIG* as well, as
+ * changes likely come with new fields that should be added below.
+ */
+static_assert(NSIGILL == 11);
+static_assert(NSIGFPE == 15);
+static_assert(NSIGSEGV == 9);
+static_assert(NSIGBUS == 5);
+static_assert(NSIGTRAP == 6);
+static_assert(NSIGCHLD == 6);
+static_assert(NSIGSYS == 2);
+static_assert(sizeof(compat_siginfo_t) == 128);
+static_assert(__alignof__(compat_siginfo_t) == 4);
+static_assert(offsetof(compat_siginfo_t, si_signo) == 0x00);
+static_assert(offsetof(compat_siginfo_t, si_errno) == 0x04);
+static_assert(offsetof(compat_siginfo_t, si_code) == 0x08);
+static_assert(offsetof(compat_siginfo_t, si_pid) == 0x0c);
+static_assert(offsetof(compat_siginfo_t, si_uid) == 0x10);
+static_assert(offsetof(compat_siginfo_t, si_tid) == 0x0c);
+static_assert(offsetof(compat_siginfo_t, si_overrun) == 0x10);
+static_assert(offsetof(compat_siginfo_t, si_status) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_utime) == 0x18);
+static_assert(offsetof(compat_siginfo_t, si_stime) == 0x1c);
+static_assert(offsetof(compat_siginfo_t, si_value) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_int) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_ptr) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_addr) == 0x0c);
+static_assert(offsetof(compat_siginfo_t, si_addr_lsb) == 0x10);
+static_assert(offsetof(compat_siginfo_t, si_lower) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_upper) == 0x18);
+static_assert(offsetof(compat_siginfo_t, si_pkey) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_perf_data) == 0x10);
+static_assert(offsetof(compat_siginfo_t, si_perf_type) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_band) == 0x0c);
+static_assert(offsetof(compat_siginfo_t, si_fd) == 0x10);
+static_assert(offsetof(compat_siginfo_t, si_call_addr) == 0x0c);
+static_assert(offsetof(compat_siginfo_t, si_syscall) == 0x10);
+static_assert(offsetof(compat_siginfo_t, si_arch) == 0x14);
diff --git a/arch/mips/include/uapi/asm/siginfo.h b/arch/mips/include/uapi/asm/siginfo.h
index c34c7eef0a1c..8cb8bd061a68 100644
--- a/arch/mips/include/uapi/asm/siginfo.h
+++ b/arch/mips/include/uapi/asm/siginfo.h
@@ -10,9 +10,7 @@
#ifndef _UAPI_ASM_SIGINFO_H
#define _UAPI_ASM_SIGINFO_H
-
#define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(long) + 2*sizeof(int))
-#undef __ARCH_SI_TRAPNO /* exception code needs to fill this ... */
#define __ARCH_HAS_SWAPPED_SIGINFO
diff --git a/arch/sparc/include/uapi/asm/siginfo.h b/arch/sparc/include/uapi/asm/siginfo.h
index 68bdde4c2a2e..0e7c27522aed 100644
--- a/arch/sparc/include/uapi/asm/siginfo.h
+++ b/arch/sparc/include/uapi/asm/siginfo.h
@@ -8,9 +8,6 @@
#endif /* defined(__sparc__) && defined(__arch64__) */
-
-#define __ARCH_SI_TRAPNO
-
#include <asm-generic/siginfo.h>
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
index d33c58a58d4f..547b06b49ce3 100644
--- a/arch/sparc/kernel/process_64.c
+++ b/arch/sparc/kernel/process_64.c
@@ -518,7 +518,7 @@ void synchronize_user_stack(void)
static void stack_unaligned(unsigned long sp)
{
- force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *) sp, 0);
+ force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *) sp);
}
static const char uwfault32[] = KERN_INFO \
diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c
index e9695a06492f..4276b9e003ca 100644
--- a/arch/sparc/kernel/signal32.c
+++ b/arch/sparc/kernel/signal32.c
@@ -745,3 +745,40 @@ asmlinkage int do_sys32_sigstack(u32 u_ssptr, u32 u_ossptr, unsigned long sp)
out:
return ret;
}
+
+/*
+ * Compile-time assertions for siginfo_t offsets. Check NSIG* as well, as
+ * changes likely come with new fields that should be added below.
+ */
+static_assert(NSIGILL == 11);
+static_assert(NSIGFPE == 15);
+static_assert(NSIGSEGV == 9);
+static_assert(NSIGBUS == 5);
+static_assert(NSIGTRAP == 6);
+static_assert(NSIGCHLD == 6);
+static_assert(NSIGSYS == 2);
+static_assert(sizeof(compat_siginfo_t) == 128);
+static_assert(__alignof__(compat_siginfo_t) == 4);
+static_assert(offsetof(compat_siginfo_t, si_signo) == 0x00);
+static_assert(offsetof(compat_siginfo_t, si_errno) == 0x04);
+static_assert(offsetof(compat_siginfo_t, si_code) == 0x08);
+static_assert(offsetof(compat_siginfo_t, si_pid) == 0x0c);
+static_assert(offsetof(compat_siginfo_t, si_uid) == 0x10);
+static_assert(offsetof(compat_siginfo_t, si_tid) == 0x0c);
+static_assert(offsetof(compat_siginfo_t, si_overrun) == 0x10);
+static_assert(offsetof(compat_siginfo_t, si_status) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_utime) == 0x18);
+static_assert(offsetof(compat_siginfo_t, si_stime) == 0x1c);
+static_assert(offsetof(compat_siginfo_t, si_value) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_int) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_ptr) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_addr) == 0x0c);
+static_assert(offsetof(compat_siginfo_t, si_trapno) == 0x10);
+static_assert(offsetof(compat_siginfo_t, si_addr_lsb) == 0x10);
+static_assert(offsetof(compat_siginfo_t, si_lower) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_upper) == 0x18);
+static_assert(offsetof(compat_siginfo_t, si_pkey) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_perf_data) == 0x10);
+static_assert(offsetof(compat_siginfo_t, si_perf_type) == 0x14);
+static_assert(offsetof(compat_siginfo_t, si_band) == 0x0c);
+static_assert(offsetof(compat_siginfo_t, si_fd) == 0x10);
diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c
index a0eec62c825d..cea23cf95600 100644
--- a/arch/sparc/kernel/signal_64.c
+++ b/arch/sparc/kernel/signal_64.c
@@ -556,3 +556,39 @@ void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long
user_enter();
}
+/*
+ * Compile-time assertions for siginfo_t offsets. Check NSIG* as well, as
+ * changes likely come with new fields that should be added below.
+ */
+static_assert(NSIGILL == 11);
+static_assert(NSIGFPE == 15);
+static_assert(NSIGSEGV == 9);
+static_assert(NSIGBUS == 5);
+static_assert(NSIGTRAP == 6);
+static_assert(NSIGCHLD == 6);
+static_assert(NSIGSYS == 2);
+static_assert(sizeof(siginfo_t) == 128);
+static_assert(__alignof__(siginfo_t) == 8);
+static_assert(offsetof(siginfo_t, si_signo) == 0x00);
+static_assert(offsetof(siginfo_t, si_errno) == 0x04);
+static_assert(offsetof(siginfo_t, si_code) == 0x08);
+static_assert(offsetof(siginfo_t, si_pid) == 0x10);
+static_assert(offsetof(siginfo_t, si_uid) == 0x14);
+static_assert(offsetof(siginfo_t, si_tid) == 0x10);
+static_assert(offsetof(siginfo_t, si_overrun) == 0x14);
+static_assert(offsetof(siginfo_t, si_status) == 0x18);
+static_assert(offsetof(siginfo_t, si_utime) == 0x20);
+static_assert(offsetof(siginfo_t, si_stime) == 0x28);
+static_assert(offsetof(siginfo_t, si_value) == 0x18);
+static_assert(offsetof(siginfo_t, si_int) == 0x18);
+static_assert(offsetof(siginfo_t, si_ptr) == 0x18);
+static_assert(offsetof(siginfo_t, si_addr) == 0x10);
+static_assert(offsetof(siginfo_t, si_trapno) == 0x18);
+static_assert(offsetof(siginfo_t, si_addr_lsb) == 0x18);
+static_assert(offsetof(siginfo_t, si_lower) == 0x20);
+static_assert(offsetof(siginfo_t, si_upper) == 0x28);
+static_assert(offsetof(siginfo_t, si_pkey) == 0x20);
+static_assert(offsetof(siginfo_t, si_perf_data) == 0x18);
+static_assert(offsetof(siginfo_t, si_perf_type) == 0x20);
+static_assert(offsetof(siginfo_t, si_band) == 0x10);
+static_assert(offsetof(siginfo_t, si_fd) == 0x14);
diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c
index be77538bc038..082a551897ed 100644
--- a/arch/sparc/kernel/sys_sparc_32.c
+++ b/arch/sparc/kernel/sys_sparc_32.c
@@ -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);
+ force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc);
#ifdef DEBUG_SPARC_BREAKPOINT
printk ("TRAP: Returning to space: PC=%x nPC=%x\n", regs->pc, regs->npc);
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
index 6b92fadb6ec7..1e9a9e016237 100644
--- a/arch/sparc/kernel/sys_sparc_64.c
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -514,7 +514,7 @@ 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);
+ force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->tpc);
#ifdef DEBUG_SPARC_BREAKPOINT
printk ("TRAP: Returning to space: PC=%lx nPC=%lx\n", regs->tpc, regs->tnpc);
#endif
diff --git a/arch/sparc/kernel/traps_32.c b/arch/sparc/kernel/traps_32.c
index 247a0d9683b2..5630e5a395e0 100644
--- a/arch/sparc/kernel/traps_32.c
+++ b/arch/sparc/kernel/traps_32.c
@@ -102,8 +102,8 @@ void do_hw_interrupt(struct pt_regs *regs, unsigned long type)
if(regs->psr & PSR_PS)
die_if_kernel("Kernel bad trap", regs);
- force_sig_fault(SIGILL, ILL_ILLTRP,
- (void __user *)regs->pc, type - 0x80);
+ force_sig_fault_trapno(SIGILL, ILL_ILLTRP,
+ (void __user *)regs->pc, type - 0x80);
}
void do_illegal_instruction(struct pt_regs *regs, unsigned long pc, unsigned long npc,
@@ -116,7 +116,7 @@ void do_illegal_instruction(struct pt_regs *regs, unsigned long pc, unsigned lon
regs->pc, *(unsigned long *)regs->pc);
#endif
- send_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)pc, 0, current);
+ send_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)pc, current);
}
void do_priv_instruction(struct pt_regs *regs, unsigned long pc, unsigned long npc,
@@ -124,7 +124,7 @@ void do_priv_instruction(struct pt_regs *regs, unsigned long pc, unsigned long n
{
if(psr & PSR_PS)
die_if_kernel("Penguin instruction from Penguin mode??!?!", regs);
- send_sig_fault(SIGILL, ILL_PRVOPC, (void __user *)pc, 0, current);
+ send_sig_fault(SIGILL, ILL_PRVOPC, (void __user *)pc, current);
}
/* XXX User may want to be allowed to do this. XXX */
@@ -145,7 +145,7 @@ void do_memaccess_unaligned(struct pt_regs *regs, unsigned long pc, unsigned lon
#endif
send_sig_fault(SIGBUS, BUS_ADRALN,
/* FIXME: Should dig out mna address */ (void *)0,
- 0, current);
+ current);
}
static unsigned long init_fsr = 0x0UL;
@@ -291,7 +291,7 @@ void do_fpe_trap(struct pt_regs *regs, unsigned long pc, unsigned long npc,
else if (fsr & 0x01)
code = FPE_FLTRES;
}
- send_sig_fault(SIGFPE, code, (void __user *)pc, 0, fpt);
+ send_sig_fault(SIGFPE, code, (void __user *)pc, fpt);
#ifndef CONFIG_SMP
last_task_used_math = NULL;
#endif
@@ -305,7 +305,7 @@ void handle_tag_overflow(struct pt_regs *regs, unsigned long pc, unsigned long n
{
if(psr & PSR_PS)
die_if_kernel("Penguin overflow trap from kernel mode", regs);
- send_sig_fault(SIGEMT, EMT_TAGOVF, (void __user *)pc, 0, current);
+ send_sig_fault(SIGEMT, EMT_TAGOVF, (void __user *)pc, current);
}
void handle_watchpoint(struct pt_regs *regs, unsigned long pc, unsigned long npc,
@@ -327,13 +327,13 @@ 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);
+ force_sig_fault(SIGBUS, BUS_OBJERR, (void __user *)pc);
}
void handle_cp_disabled(struct pt_regs *regs, unsigned long pc, unsigned long npc,
unsigned long psr)
{
- send_sig_fault(SIGILL, ILL_COPROC, (void __user *)pc, 0, current);
+ send_sig_fault(SIGILL, ILL_COPROC, (void __user *)pc, current);
}
void handle_cp_exception(struct pt_regs *regs, unsigned long pc, unsigned long npc,
@@ -343,13 +343,13 @@ void handle_cp_exception(struct pt_regs *regs, unsigned long pc, unsigned long n
printk("Co-Processor Exception at PC %08lx NPC %08lx PSR %08lx\n",
pc, npc, psr);
#endif
- send_sig_fault(SIGILL, ILL_COPROC, (void __user *)pc, 0, current);
+ send_sig_fault(SIGILL, ILL_COPROC, (void __user *)pc, current);
}
void handle_hw_divzero(struct pt_regs *regs, unsigned long pc, unsigned long npc,
unsigned long psr)
{
- send_sig_fault(SIGFPE, FPE_INTDIV, (void __user *)pc, 0, current);
+ send_sig_fault(SIGFPE, FPE_INTDIV, (void __user *)pc, current);
}
#ifdef CONFIG_DEBUG_BUGVERBOSE
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
index a850dccd78ea..6863025ed56d 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c
@@ -107,8 +107,8 @@ void bad_trap(struct pt_regs *regs, long lvl)
regs->tpc &= 0xffffffff;
regs->tnpc &= 0xffffffff;
}
- force_sig_fault(SIGILL, ILL_ILLTRP,
- (void __user *)regs->tpc, lvl);
+ force_sig_fault_trapno(SIGILL, ILL_ILLTRP,
+ (void __user *)regs->tpc, lvl);
}
void bad_trap_tl1(struct pt_regs *regs, long lvl)
@@ -201,8 +201,7 @@ void spitfire_insn_access_exception(struct pt_regs *regs, unsigned long sfsr, un
regs->tpc &= 0xffffffff;
regs->tnpc &= 0xffffffff;
}
- force_sig_fault(SIGSEGV, SEGV_MAPERR,
- (void __user *)regs->tpc, 0);
+ force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *)regs->tpc);
out:
exception_exit(prev_state);
}
@@ -237,7 +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);
+ force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *) addr);
}
void sun4v_insn_access_exception_tl1(struct pt_regs *regs, unsigned long addr, unsigned long type_ctx)
@@ -321,7 +320,7 @@ 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);
+ force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *)sfar);
out:
exception_exit(prev_state);
}
@@ -385,13 +384,13 @@ 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);
+ force_sig_fault(SIGILL, ILL_ILLADR, (void __user *)addr);
break;
case HV_FAULT_TYPE_MCD_DIS:
- force_sig_fault(SIGSEGV, SEGV_ACCADI, (void __user *)addr, 0);
+ force_sig_fault(SIGSEGV, SEGV_ACCADI, (void __user *)addr);
break;
default:
- force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *)addr, 0);
+ force_sig_fault(SIGSEGV, SEGV_MAPERR, (void __user *)addr);
break;
}
}
@@ -568,7 +567,7 @@ 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);
+ force_sig_fault(SIGBUS, BUS_OBJERR, (void *)0);
}
void spitfire_access_error(struct pt_regs *regs, unsigned long status_encoded, unsigned long afar)
@@ -2069,8 +2068,7 @@ void do_mcd_err(struct pt_regs *regs, struct sun4v_error_entry ent)
/* Send SIGSEGV to the userspace process with the right signal
* code
*/
- force_sig_fault(SIGSEGV, SEGV_ADIDERR, (void __user *)ent.err_raddr,
- 0);
+ force_sig_fault(SIGSEGV, SEGV_ADIDERR, (void __user *)ent.err_raddr);
}
/* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate.
@@ -2184,7 +2182,7 @@ 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);
+ (void __user *)sun4v_get_vaddr(regs));
return true;
}
@@ -2340,8 +2338,7 @@ static void do_fpe_common(struct pt_regs *regs)
else if (fsr & 0x01)
code = FPE_FLTRES;
}
- force_sig_fault(SIGFPE, code,
- (void __user *)regs->tpc, 0);
+ force_sig_fault(SIGFPE, code, (void __user *)regs->tpc);
}
}
@@ -2395,8 +2392,7 @@ void do_tof(struct pt_regs *regs)
regs->tpc &= 0xffffffff;
regs->tnpc &= 0xffffffff;
}
- force_sig_fault(SIGEMT, EMT_TAGOVF,
- (void __user *)regs->tpc, 0);
+ force_sig_fault(SIGEMT, EMT_TAGOVF, (void __user *)regs->tpc);
out:
exception_exit(prev_state);
}
@@ -2415,8 +2411,7 @@ void do_div0(struct pt_regs *regs)
regs->tpc &= 0xffffffff;
regs->tnpc &= 0xffffffff;
}
- force_sig_fault(SIGFPE, FPE_INTDIV,
- (void __user *)regs->tpc, 0);
+ force_sig_fault(SIGFPE, FPE_INTDIV, (void __user *)regs->tpc);
out:
exception_exit(prev_state);
}
@@ -2612,7 +2607,7 @@ void do_illegal_instruction(struct pt_regs *regs)
}
}
}
- force_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)pc, 0);
+ force_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)pc);
out:
exception_exit(prev_state);
}
@@ -2632,7 +2627,7 @@ 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);
+ force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *)sfar);
out:
exception_exit(prev_state);
}
@@ -2650,7 +2645,7 @@ 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);
+ force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *) addr);
}
/* sun4v_mem_corrupt_detect_precise() - Handle precise exception on an ADI
@@ -2697,7 +2692,7 @@ 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);
+ force_sig_fault(SIGSEGV, SEGV_ADIPERR, (void __user *)addr);
}
void do_privop(struct pt_regs *regs)
@@ -2712,8 +2707,7 @@ void do_privop(struct pt_regs *regs)
regs->tpc &= 0xffffffff;
regs->tnpc &= 0xffffffff;
}
- force_sig_fault(SIGILL, ILL_PRVOPC,
- (void __user *)regs->tpc, 0);
+ force_sig_fault(SIGILL, ILL_PRVOPC, (void __user *)regs->tpc);
out:
exception_exit(prev_state);
}
diff --git a/arch/sparc/kernel/unaligned_32.c b/arch/sparc/kernel/unaligned_32.c
index ef5c5207c9ff..455f0258c745 100644
--- a/arch/sparc/kernel/unaligned_32.c
+++ b/arch/sparc/kernel/unaligned_32.c
@@ -278,5 +278,5 @@ asmlinkage void user_unaligned_trap(struct pt_regs *regs, unsigned int insn)
{
send_sig_fault(SIGBUS, BUS_ADRALN,
(void __user *)safe_compute_effective_address(regs, insn),
- 0, current);
+ current);
}
diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
index de2031c2b2d7..fa858626b85b 100644
--- a/arch/sparc/mm/fault_32.c
+++ b/arch/sparc/mm/fault_32.c
@@ -83,7 +83,7 @@ static void __do_fault_siginfo(int code, int sig, struct pt_regs *regs,
show_signal_msg(regs, sig, code,
addr, current);
- force_sig_fault(sig, code, (void __user *) addr, 0);
+ force_sig_fault(sig, code, (void __user *) addr);
}
static unsigned long compute_si_addr(struct pt_regs *regs, int text_fault)
diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c
index 0a6bcc85fba7..9a9652a15fed 100644
--- a/arch/sparc/mm/fault_64.c
+++ b/arch/sparc/mm/fault_64.c
@@ -176,7 +176,7 @@ static void do_fault_siginfo(int code, int sig, struct pt_regs *regs,
if (unlikely(show_unhandled_signals))
show_signal_msg(regs, sig, code, addr, current);
- force_sig_fault(sig, code, (void __user *) addr, 0);
+ force_sig_fault(sig, code, (void __user *) addr);
}
static unsigned int get_fault_insn(struct pt_regs *regs, unsigned int insn)
diff --git a/arch/x86/kernel/signal_compat.c b/arch/x86/kernel/signal_compat.c
index 06743ec054d2..b52407c56000 100644
--- a/arch/x86/kernel/signal_compat.c
+++ b/arch/x86/kernel/signal_compat.c
@@ -34,7 +34,13 @@ static inline void signal_compat_build_tests(void)
BUILD_BUG_ON(NSIGSYS != 2);
/* This is part of the ABI and can never change in size: */
+ BUILD_BUG_ON(sizeof(siginfo_t) != 128);
BUILD_BUG_ON(sizeof(compat_siginfo_t) != 128);
+
+ /* This is a part of the ABI and can never change in alignment */
+ BUILD_BUG_ON(__alignof__(siginfo_t) != 8);
+ BUILD_BUG_ON(__alignof__(compat_siginfo_t) != 4);
+
/*
* The offsets of all the (unioned) si_fields are fixed
* in the ABI, of course. Make sure none of them ever