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| author | rstone <rstone@FreeBSD.org> | 2011-11-07 01:53:25 +0000 |
|---|---|---|
| committer | rstone <rstone@FreeBSD.org> | 2011-11-07 01:53:25 +0000 |
| commit | 7513eaddcff8899b95b14f2389e55c550a66db93 (patch) | |
| tree | f26296a44288cd268e676e9fd59029da99e8bb90 /sys/amd64/include/segments.h | |
| parent | 37aef6a48897e57c98570fd08897440089e01d73 (diff) | |
| download | FreeBSD-src-7513eaddcff8899b95b14f2389e55c550a66db93.zip FreeBSD-src-7513eaddcff8899b95b14f2389e55c550a66db93.tar.gz | |
Fix the DTrace pid return trap interrupt vector. Previously we were using
31, but that vector is reserved.
Without this fix, running dtrace -p <pid> would either cause the target
process to crash or the kernel to page fault.
Obtained from: rpaulo
MFC after: 3days
Diffstat (limited to 'sys/amd64/include/segments.h')
| -rw-r--r-- | sys/amd64/include/segments.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/amd64/include/segments.h b/sys/amd64/include/segments.h index 22dc95a..2796511 100644 --- a/sys/amd64/include/segments.h +++ b/sys/amd64/include/segments.h @@ -214,7 +214,7 @@ struct region_descriptor { #define IDT_XF 19 /* #XF: SIMD Floating-Point Exception */ #define IDT_IO_INTS NRSVIDT /* Base of IDT entries for I/O interrupts. */ #define IDT_SYSCALL 0x80 /* System Call Interrupt Vector */ -#define IDT_DTRACE_RET 0x92 /* DTrace pid provider Interrupt Vector */ +#define IDT_DTRACE_RET 0x20 /* DTrace pid provider Interrupt Vector */ /* * Entries in the Global Descriptor Table (GDT) |
