[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH 2/5] fix copyoutmsg for 64-bit userspace
From: |
Luca Dariz |
Subject: |
[PATCH 2/5] fix copyoutmsg for 64-bit userspace |
Date: |
Wed, 19 Apr 2023 21:47:00 +0200 |
* x86_64/copy_user.c: use the correct user/kernel msg structure
---
x86_64/copy_user.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/x86_64/copy_user.c b/x86_64/copy_user.c
index b5084996..f76e44c9 100644
--- a/x86_64/copy_user.c
+++ b/x86_64/copy_user.c
@@ -430,7 +430,7 @@ int copyoutmsg (const void *kernelbuf, void *userbuf, const
size_t ksize)
usaddr = (vm_offset_t)(umsg + 1);
keaddr = ksaddr + ksize - sizeof(mach_msg_header_t);
- if (ksize > sizeof(mach_msg_user_header_t))
+ if (ksize > sizeof(mach_msg_header_t))
{
while (ksaddr < keaddr)
{
@@ -484,8 +484,7 @@ int copyoutmsg (const void *kernelbuf, void *userbuf, const
size_t ksize)
mach_msg_size_t usize;
usize = sizeof(mach_msg_user_header_t) + usaddr - (vm_offset_t)(umsg + 1);
- usize = usize;
- if (copyout(&usize, &umsg->msgh_size, sizeof(kmsg->msgh_size)))
+ if (copyout(&usize, &umsg->msgh_size, sizeof(umsg->msgh_size)))
return 1;
return 0;
--
2.30.2
- Re: [PATCH 5/5] add setting gs/fsbase, (continued)
- Re: [PATCH 5/5] add setting gs/fsbase, Sergey Bugaev, 2023/04/24
- Re: [PATCH 5/5] add setting gs/fsbase, Sergey Bugaev, 2023/04/24
- Re: [PATCH 5/5] add setting gs/fsbase, Luca Dariz, 2023/04/24
- Re: [PATCH 5/5] add setting gs/fsbase, Sergey Bugaev, 2023/04/24
- Re: [PATCH 5/5] add setting gs/fsbase, Samuel Thibault, 2023/04/24
- Re: [PATCH 5/5] add setting gs/fsbase, Sergey Bugaev, 2023/04/25
- Re: [PATCH 5/5] add setting gs/fsbase, Sergey Bugaev, 2023/04/25
- Re: [PATCH 5/5] add setting gs/fsbase, Samuel Thibault, 2023/04/25
- Re: [PATCH 5/5] add setting gs/fsbase, Sergey Bugaev, 2023/04/26
Re: [PATCH 5/5] add setting gs/fsbase, Samuel Thibault, 2023/04/30
[PATCH 2/5] fix copyoutmsg for 64-bit userspace,
Luca Dariz <=
[PATCH 4/5 (v4)] x86_64: add 64-bit syscall entry point, Luca Dariz, 2023/04/19
Re: [PATCH 1/5] fix address fault for 32-on-64-bit syscall, Samuel Thibault, 2023/04/20