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Peter Maydell 9fea273c85 linux-user: Fix llseek with high bit of offset_low set 
The llseek syscall takes two 32-bit arguments, offset_high
and offset_low, which must be combined to form a single
64-bit offset. Unfortunately we were combining them with
   (uint64_t)arg2 << 32) | arg3
and arg3 is a signed type; this meant that when promoting
arg3 to a 64-bit type it would be sign-extended. The effect
was that if the offset happened to have bit 31 set then
this bit would get sign-extended into all of bits 63..32.
Explicitly cast arg3 to abi_ulong to avoid the erroneous
sign extension.

Reported-by: Chanho Park <parkch98@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Chanho Park <parkch98@gmail.com>
Message-id: 1470938379-1133-1-git-send-email-peter.maydell@linaro.org
2016-08-16 16:42:03 +01:00
..
aarch64 linux-user: AArch64 has sync_file_range, not sync_file_range2 2016-07-19 16:18:11 +03:00
alpha linux-user: Clean up target_structs.h header guards 2016-07-12 16:19:16 +02:00
arm Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
cris linux-user: Clean up target_structs.h header guards 2016-07-12 16:19:16 +02:00
host linux-user: Clean up hostdep.h header guards 2016-07-12 16:19:16 +02:00
i386 linux-user: Clean up target_structs.h header guards 2016-07-12 16:19:16 +02:00
m68k linux-user: Clean up target_structs.h header guards 2016-07-12 16:19:16 +02:00
microblaze linux-user: Clean up target_structs.h header guards 2016-07-12 16:19:16 +02:00
mips linux-user: Clean up target_structs.h header guards 2016-07-12 16:19:16 +02:00
mips64 linux-user: Clean up target_signal.h header guards 2016-07-12 16:19:16 +02:00
openrisc linux-user: Clean up target_structs.h header guards 2016-07-12 16:19:16 +02:00
ppc linux-user: Clean up target_structs.h header guards 2016-07-12 16:19:16 +02:00
s390x linux-user: Clean up target_structs.h header guards 2016-07-12 16:19:16 +02:00
sh4 linux-user: Clean up target_structs.h header guards 2016-07-12 16:19:16 +02:00
sparc linux-user: define missing sparc syscalls 2016-07-19 16:18:11 +03:00
sparc64 linux-user: Clean up target_structs.h header guards 2016-07-12 16:19:16 +02:00
tilegx Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
unicore32 linux-user: Clean up target_structs.h header guards 2016-07-12 16:19:16 +02:00
x86_64 linux-user: Fix target_semid_ds structure definition 2016-08-04 16:36:53 +03:00
elfload.c os-posix: include sys/mman.h 2016-06-16 18:39:03 +02:00
errno_defs.h linux-user: Renumber TARGET_QEMU_ESIGRETURN, make it not arch-specific 2016-05-27 14:49:49 +03:00
flat.h Support for 32 bit ABI on 64 bit targets (only enabled Sparc64) 2007-10-14 16:27:31 +00:00
flatload.c Use #include "..." for our own headers, <...> for others 2016-07-12 16:19:16 +02:00
ioctls.h linux-user: Fix type for SIOCATMARK ioctl 2016-07-19 16:18:11 +03:00
linux_loop.h linux-user: Add loop control ioctls 2016-07-19 15:22:33 +03:00
linuxload.c linux-user: Clean up includes 2016-01-29 15:07:22 +00:00
m68k-sim.c linux-user: Clean up includes 2016-01-29 15:07:22 +00:00
main.c Update ancient copyright string in -version output 2016-08-11 16:24:53 +01:00
Makefile.objs linux-user: Provide safe_syscall for fixing races between signals and syscalls 2016-05-27 14:49:51 +03:00
mmap.c os-posix: include sys/mman.h 2016-06-16 18:39:03 +02:00
qemu.h exec: Reduce CONFIG_USER_ONLY ifdeffenery 2016-07-26 15:31:58 -03:00
safe-syscall.S linux-user: Provide safe_syscall for fixing races between signals and syscalls 2016-05-27 14:49:51 +03:00
signal.c linux-user: Forget about synchronous signal once it is delivered 2016-07-19 15:23:16 +03:00
socket.h linux-user: support SO_PASSSEC setsockopt option 2014-06-29 14:19:59 +03:00
strace.c linux-user: fix clone() strace 2016-06-26 13:17:21 +03:00
strace.list linux-user: update get_thread_area/set_thread_area strace 2016-06-26 13:17:21 +03:00
syscall.c linux-user: Fix llseek with high bit of offset_low set 2016-08-16 16:42:03 +01:00
syscall_defs.h linux-user: Add some new blk ioctls 2016-07-19 15:23:17 +03:00
syscall_types.h linux-user: Correct type for LOOP_GET_STATUS{,64} ioctls 2016-07-19 15:23:16 +03:00
target_flat.h linux-user/FLAT: allow targets to override FLAT processing 2011-02-09 10:33:54 +02:00
trace-events trace-events: fix first line comment in trace-events 2016-08-12 10:36:01 +01:00
uaccess.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
uname.c linux-user: Clean up includes 2016-01-29 15:07:22 +00:00
uname.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
vm86.c linux-user: Clean up includes 2016-01-29 15:07:22 +00:00