| Message ID | 20240325153313.526888-2-iii@linux.ibm.com |
|---|---|
| State | New |
| Headers | show |
| Series | linux-user: Fix shmat(NULL) for h != g | expand |
On 3/25/24 05:07, Ilya Leoshkevich wrote: > The indices of arguments used with semctl() are all off-by-1, because > arg1 is the ipc() command. Fix them. While at it, reuse print_semctl(). > > New output (for a small test program): > > 3540333 semctl(999,888,SEM_INFO,0x00007fe5051ee9a0) = -1 errno=14 (Bad address) > > Fixes: 7ccfb2eb5f9d ("Fix warnings that would be caused by gcc flag -Wwrite-strings") > Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> > --- > linux-user/strace.c | 8 +++----- > 1 file changed, 3 insertions(+), 5 deletions(-) > > diff --git a/linux-user/strace.c b/linux-user/strace.c > index 9934e2208e2..9be71af4016 100644 > --- a/linux-user/strace.c > +++ b/linux-user/strace.c > @@ -657,7 +657,7 @@ print_newselect(CPUArchState *cpu_env, const struct syscallname *name, > } > #endif > > -#ifdef TARGET_NR_semctl > +#if defined(TARGET_NR_semctl) || defined(TARGET_NR_ipc) > static void > print_semctl(CPUArchState *cpu_env, const struct syscallname *name, > abi_long arg1, abi_long arg2, abi_long arg3, You can remove this ifdef, because one of the two is always defined. Otherwise, Reviewed-by: Richard Henderson <richard.henderson@linaro.org> r~ > @@ -698,10 +698,8 @@ print_ipc(CPUArchState *cpu_env, const struct syscallname *name, > { > switch(arg1) { > case IPCOP_semctl: > - qemu_log("semctl(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ",", > - arg1, arg2); > - print_ipc_cmd(arg3); > - qemu_log(",0x" TARGET_ABI_FMT_lx ")", arg4); > + print_semctl(cpu_env, &(const struct syscallname){ .name = "semctl" }, > + arg2, arg3, arg4, arg5, 0, 0); > break; > case IPCOP_shmat: > print_shmat(cpu_env, &(const struct syscallname){ .name = "shmat" },
diff --git a/linux-user/strace.c b/linux-user/strace.c index 9934e2208e2..9be71af4016 100644 --- a/linux-user/strace.c +++ b/linux-user/strace.c @@ -657,7 +657,7 @@ print_newselect(CPUArchState *cpu_env, const struct syscallname *name, } #endif -#ifdef TARGET_NR_semctl +#if defined(TARGET_NR_semctl) || defined(TARGET_NR_ipc) static void print_semctl(CPUArchState *cpu_env, const struct syscallname *name, abi_long arg1, abi_long arg2, abi_long arg3, @@ -698,10 +698,8 @@ print_ipc(CPUArchState *cpu_env, const struct syscallname *name, { switch(arg1) { case IPCOP_semctl: - qemu_log("semctl(" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld ",", - arg1, arg2); - print_ipc_cmd(arg3); - qemu_log(",0x" TARGET_ABI_FMT_lx ")", arg4); + print_semctl(cpu_env, &(const struct syscallname){ .name = "semctl" }, + arg2, arg3, arg4, arg5, 0, 0); break; case IPCOP_shmat: print_shmat(cpu_env, &(const struct syscallname){ .name = "shmat" },
The indices of arguments used with semctl() are all off-by-1, because arg1 is the ipc() command. Fix them. While at it, reuse print_semctl(). New output (for a small test program): 3540333 semctl(999,888,SEM_INFO,0x00007fe5051ee9a0) = -1 errno=14 (Bad address) Fixes: 7ccfb2eb5f9d ("Fix warnings that would be caused by gcc flag -Wwrite-strings") Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> --- linux-user/strace.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)