diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2021-04-10 06:46:01 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-04-10 06:48:35 +0300 |
| commit | 8859a44ea0df92bccdc942ef15781ebbfe0ad9f3 (patch) | |
| tree | bffdd602a7d6ad5060df41789af75965f9d58270 /arch/riscv/include/asm | |
| parent | 6c5e6b4ccc1bb9ac56579a9aed25d517d2318be6 (diff) | |
| parent | 4e04e7513b0fa2fe8966a1c83fb473f1667e2810 (diff) | |
| download | linux-8859a44ea0df92bccdc942ef15781ebbfe0ad9f3.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Conflicts:
MAINTAINERS
- keep Chandrasekar
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
- simple fix + trust the code re-added to param.c in -next is fine
include/linux/bpf.h
- trivial
include/linux/ethtool.h
- trivial, fix kdoc while at it
include/linux/skmsg.h
- move to relevant place in tcp.c, comment re-wrapped
net/core/skmsg.c
- add the sk = sk // sk = NULL around calls
net/tipc/crypto.c
- trivial
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'arch/riscv/include/asm')
| -rw-r--r-- | arch/riscv/include/asm/uaccess.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/riscv/include/asm/uaccess.h b/arch/riscv/include/asm/uaccess.h index 824b2c9da75b..f944062c9d99 100644 --- a/arch/riscv/include/asm/uaccess.h +++ b/arch/riscv/include/asm/uaccess.h @@ -306,7 +306,9 @@ do { \ * data types like structures or arrays. * * @ptr must have pointer-to-simple-variable type, and @x must be assignable - * to the result of dereferencing @ptr. + * to the result of dereferencing @ptr. The value of @x is copied to avoid + * re-ordering where @x is evaluated inside the block that enables user-space + * access (thus bypassing user space protection if @x is a function). * * Caller must check the pointer with access_ok() before calling this * function. @@ -316,12 +318,13 @@ do { \ #define __put_user(x, ptr) \ ({ \ __typeof__(*(ptr)) __user *__gu_ptr = (ptr); \ + __typeof__(*__gu_ptr) __val = (x); \ long __pu_err = 0; \ \ __chk_user_ptr(__gu_ptr); \ \ __enable_user_access(); \ - __put_user_nocheck(x, __gu_ptr, __pu_err); \ + __put_user_nocheck(__val, __gu_ptr, __pu_err); \ __disable_user_access(); \ \ __pu_err; \ |