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| author | Richard Henderson <richard.henderson@linaro.org> | 2023-07-07 21:40:41 +0100 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-07-15 08:02:32 +0100 |
| commit | 55baec0f4c535e24a060070592b8c51d75108481 (patch) | |
| tree | 6a807cbafc3928642e00e1d0c5ea1faa0d23cb17 /linux-user/syscall.c | |
| parent | 0dd558121c41dd4578517a90668c24e7fcdd46ba (diff) | |
linux-user: Widen target_mmap offset argument to off_t
We build with _FILE_OFFSET_BITS=64, so off_t = off64_t = uint64_t.
With an extra cast, this fixes emulation of mmap2, which could
overflow the computation of the full value of offset.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230707204054.8792-14-richard.henderson@linaro.org>
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 3a89f6b408..a80d33ecf2 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -10591,7 +10591,7 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1, #endif ret = target_mmap(arg1, arg2, arg3, target_to_host_bitmask(arg4, mmap_flags_tbl), - arg5, arg6 << MMAP_SHIFT); + arg5, (off_t)(abi_ulong)arg6 << MMAP_SHIFT); return get_errno(ret); #endif case TARGET_NR_munmap: |