diff --git a/man2/sigaction.2 b/man2/sigaction.2
index a48a209ed..09f8defb4 100644
--- a/man2/sigaction.2
+++ b/man2/sigaction.2
@@ -270,32 +270,39 @@ is a struct with the following fields:
 .in +4n
 .nf
 siginfo_t {
-    int      si_signo;    /* Signal number */
-    int      si_errno;    /* An errno value */
-    int      si_code;     /* Signal code */
-    int      si_trapno;   /* Trap number that caused
-                             hardware-generated signal
-                             (unused on most architectures) */
+    int      si_signo;     /* Signal number */
+    int      si_errno;     /* An errno value */
+    int      si_code;      /* Signal code */
+    int      si_trapno;    /* Trap number that caused
+                              hardware-generated signal
+                              (unused on most architectures) */
 .\" FIXME
 .\" The siginfo_t 'si_trapno' field seems to be used only on SPARC and Alpha;
 .\" this page could use a little more detail on its purpose there.
-    pid_t    si_pid;      /* Sending process ID */
-    uid_t    si_uid;      /* Real user ID of sending process */
-    int      si_status;   /* Exit value or signal */
-    clock_t  si_utime;    /* User time consumed */
-    clock_t  si_stime;    /* System time consumed */
-    sigval_t si_value;    /* Signal value */
-    int      si_int;      /* POSIX.1b signal */
-    void    *si_ptr;      /* POSIX.1b signal */
-    int      si_overrun;  /* Timer overrun count; POSIX.1b timers */
-    int      si_timerid;  /* Timer ID; POSIX.1b timers */
+    pid_t    si_pid;       /* Sending process ID */
+    uid_t    si_uid;       /* Real user ID of sending process */
+    int      si_status;    /* Exit value or signal */
+    clock_t  si_utime;     /* User time consumed */
+    clock_t  si_stime;     /* System time consumed */
+    sigval_t si_value;     /* Signal value */
+    int      si_int;       /* POSIX.1b signal */
+    void    *si_ptr;       /* POSIX.1b signal */
+    int      si_overrun;   /* Timer overrun count;
+                              POSIX.1b timers */
+    int      si_timerid;   /* Timer ID; POSIX.1b timers */
 .\" In the kernel: si_tid
-    void    *si_addr;     /* Memory location which caused fault */
-    long     si_band;     /* Band event (was \fIint\fP in
-                             glibc 2.3.2 and earlier) */
-    int      si_fd;       /* File descriptor */
-    short    si_addr_lsb; /* Least significant bit of address
-                             (since Linux 2.6.32) */
+    void    *si_addr;      /* Memory location which caused fault */
+    long     si_band;      /* Band event (was \fIint\fP in
+                              glibc 2.3.2 and earlier) */
+    int      si_fd;        /* File descriptor */
+    short    si_addr_lsb;  /* Least significant bit of address
+                              (since Linux 2.6.32) */
+    void    *si_call_addr; /* Address of system call instruction
+                              (since Linux 3.5) */
+    int      si_syscall;   /* Number of attempted system call
+                              (since Linux 3.5) */
+    unsigned int si_arch;  /* Architecture of attempted system call
+                              (since Linux 3.5) */
 }
 .fi
 .in
@@ -449,6 +456,19 @@ field by
 The
 .I si_fd
 field indicates the file descriptor for which the I/O event occurred.
+.IP *
+The
+.B SIGSYS
+signal that is (since Linux 3.5)
+.\" commit a0727e8ce513fe6890416da960181ceb10fbfae6
+generated when a seccomp filter returns
+.B SECCOMP_RET_TRAP
+fills in
+.IR si_call_addr ,
+.IR si_syscall ,
+.IR si_arch ,
+and various other fields as described in
+.BR seccomp (2).
 .PP
 .I si_code
 is a value (not a bit mask)