From: Arnd Bergmann arnd@arndb.de
commit 78e05972c5e6c8e9ca4c00ccc6985409da69f904 upstream.
As Vincent noticed, the y2038 conversion of semtimedop in linux-5.1 broke when commit 00bf25d693e7 ("y2038: use time32 syscall names on 32-bit") changed all system calls on all architectures that take a 32-bit time_t to point to the _time32 implementation, but left out semtimedop in the asm-generic header.
This affects all 32-bit architectures using asm-generic/unistd.h: h8300, unicore32, openrisc, nios2, hexagon, c6x, arc, nds32 and csky.
The notable exception is riscv32, which has dropped support for the time32 system calls entirely.
Reported-by: Vincent Chen deanbo422@gmail.com Cc: stable@vger.kernel.org Cc: Vincent Chen deanbo422@gmail.com Cc: Greentime Hu green.hu@gmail.com Cc: Yoshinori Sato ysato@users.sourceforge.jp Cc: Guan Xuetao gxt@pku.edu.cn Cc: Stafford Horne shorne@gmail.com Cc: Jonas Bonn jonas@southpole.se Cc: Stefan Kristiansson stefan.kristiansson@saunalahti.fi Cc: Ley Foon Tan lftan@altera.com Cc: Richard Kuo rkuo@codeaurora.org Cc: Mark Salter msalter@redhat.com Cc: Aurelien Jacquiot jacquiot.aurelien@gmail.com Cc: Guo Ren guoren@kernel.org Fixes: 00bf25d693e7 ("y2038: use time32 syscall names on 32-bit") Signed-off-by: Arnd Bergmann arnd@arndb.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- include/uapi/asm-generic/unistd.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -569,7 +569,7 @@ __SYSCALL(__NR_semget, sys_semget) __SC_COMP(__NR_semctl, sys_semctl, compat_sys_semctl) #if defined(__ARCH_WANT_TIME32_SYSCALLS) || __BITS_PER_LONG != 32 #define __NR_semtimedop 192 -__SC_COMP(__NR_semtimedop, sys_semtimedop, sys_semtimedop_time32) +__SC_3264(__NR_semtimedop, sys_semtimedop_time32, sys_semtimedop) #endif #define __NR_semop 193 __SYSCALL(__NR_semop, sys_semop)