diff options
| author | Laurent Vivier <laurent@vivier.eu> | 2020-08-27 09:04:49 +0200 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2020-08-27 12:29:50 +0200 |
| commit | 00576757893aa63d221418a1d05c08ed10f94c09 (patch) | |
| tree | 35cf2c5503ead73443976fc3eefee9c706b70fd7 /linux-user/syscall.c | |
| parent | dcbcf5cf1cddd0fa3e39fbea3b97e6cd0b5078f4 (diff) | |
linux-user: fix target_to_host_timespec64()
in 32 bit mode, drop the padding in tv_nsec. If host is 64bit and target
is 32bit, the padding bytes will be copied from the target and as the
kernel checks the value, the syscall exits with EINVAL.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200827070449.2386007-1-laurent@vivier.eu>
Fixes: c6c8d1026e75 ("linux-user/syscall: Add support for clock_gettime64/clock_settime64")
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index fd13e72305..3b725bbe25 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -1229,6 +1229,8 @@ static inline abi_long target_to_host_timespec64(struct timespec *host_ts, } __get_user(host_ts->tv_sec, &target_ts->tv_sec); __get_user(host_ts->tv_nsec, &target_ts->tv_nsec); + /* in 32bit mode, this drops the padding */ + host_ts->tv_nsec = (long)(abi_long)host_ts->tv_nsec; unlock_user_struct(target_ts, target_addr, 0); return 0; } |