diff options
Diffstat (limited to 'tapset/i386')
| -rw-r--r-- | tapset/i386/nd_syscalls.stp | 8 | ||||
| -rw-r--r-- | tapset/i386/syscalls.stp | 6 |
2 files changed, 9 insertions, 5 deletions
diff --git a/tapset/i386/nd_syscalls.stp b/tapset/i386/nd_syscalls.stp index 92befeb5..2b13cbd7 100644 --- a/tapset/i386/nd_syscalls.stp +++ b/tapset/i386/nd_syscalls.stp @@ -79,17 +79,19 @@ probe nd_syscall.mmap2 = kprobe.function("sys_mmap2") ? // length = $len // prot = $prot // flags = $flags - // fd = $fd + // fd = __int32($fd) // pgoffset = $pgoff // argstr = sprintf("%p, %d, %s, %s, %d, %d", $addr, // $len, _mprotect_prot_str($prot), _mmap_flags($flags), - // $fd, $pgoff) + // __int32($fd), $pgoff) asmlinkage() start = ulong_arg(1) length = ulong_arg(2) prot = ulong_arg(3) flags = ulong_arg(4) - fd = ulong_arg(5) + # Although the kernel gets an unsigned long fd, on the + # user-side it is a signed int. Fix this. + fd = int_arg(5) pgoffset = ulong_arg(6) argstr = sprintf("%p, %d, %s, %s, %d, %d", start, length, _mprotect_prot_str(prot), _mmap_flags(flags), diff --git a/tapset/i386/syscalls.stp b/tapset/i386/syscalls.stp index 821d77d4..2d1a282b 100644 --- a/tapset/i386/syscalls.stp +++ b/tapset/i386/syscalls.stp @@ -68,11 +68,13 @@ probe syscall.mmap2 = kernel.function("sys_mmap2") ? length = $len prot = $prot flags = $flags - fd = $fd + # Although the kernel gets an unsigned long fd, on the + # user-side it is a signed int. Fix this. + fd = __int32($fd) pgoffset = $pgoff argstr = sprintf("%p, %d, %s, %s, %d, %d", $addr, $len, _mprotect_prot_str($prot), _mmap_flags($flags), - $fd, $pgoff) + __int32($fd), $pgoff) } probe syscall.mmap2.return = kernel.function("sys_mmap2").return ? { |