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| author | Jan Beulich <jbeulich@novell.com> | 2005-09-12 18:49:25 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-12 10:50:58 -0700 |
| commit | 049cdefe19f95b67b06b70915cd8e4ae7173337a (patch) | |
| tree | 42a0846ec18e3c4f705f8f167890675c5978a814 /arch/x86_64 | |
| parent | c47a3167d0454c0af5fb0a0322b01a0e3487798e (diff) | |
| download | op-kernel-dev-049cdefe19f95b67b06b70915cd8e4ae7173337a.zip op-kernel-dev-049cdefe19f95b67b06b70915cd8e4ae7173337a.tar.gz | |
[PATCH] x86-64: reduce x86-64 bug frame by 4 bytes
As mentioned before, the size of the bug frame can be further reduced while
continuing to use instructions to encode the information.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/kernel/traps.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c index 1dfeb07..b5e09e6 100644 --- a/arch/x86_64/kernel/traps.c +++ b/arch/x86_64/kernel/traps.c @@ -321,13 +321,13 @@ void handle_BUG(struct pt_regs *regs) if (__copy_from_user(&f, (struct bug_frame *) regs->rip, sizeof(struct bug_frame))) return; - if ((unsigned long)f.filename < __PAGE_OFFSET || + if (f.filename >= 0 || f.ud2[0] != 0x0f || f.ud2[1] != 0x0b) return; - if (__get_user(tmp, f.filename)) - f.filename = "unmapped filename"; + if (__get_user(tmp, (char *)(long)f.filename)) + f.filename = (int)(long)"unmapped filename"; printk("----------- [cut here ] --------- [please bite here ] ---------\n"); - printk(KERN_ALERT "Kernel BUG at %.50s:%d\n", f.filename, f.line); + printk(KERN_ALERT "Kernel BUG at %.50s:%d\n", (char *)(long)f.filename, f.line); } #ifdef CONFIG_BUG |
