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Merge "msm: ADSPRPC: Restrict untrusted applications from attaching to GuestOS"

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This commit is contained in:
qctecmdr
2022-06-23 18:18:35 -07:00
committed by Gerrit - the friendly Code Review server
parent 8e1d97e0da 7f73868533
commit 0f85ffde10
1 changed files with 13 additions and 0 deletions
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13
drivers/char/adsprpc.c
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@@ -3870,6 +3870,12 @@ static int fastrpc_init_attach_process(struct fastrpc_file *fl,
remote_arg_t ra[1];
struct fastrpc_ioctl_invoke_async ioctl;
if (fl->dev_minor == MINOR_NUM_DEV) {
err = -ECONNREFUSED;
ADSPRPC_ERR(
"untrusted app trying to attach to privileged DSP PD\n");
return err;
}
/*
* Prepare remote arguments for creating thread group
* in guestOS/staticPD on the remote subsystem.
@@ -4148,6 +4154,13 @@ static int fastrpc_init_create_static_process(struct fastrpc_file *fl,
unsigned int pageslen;
} inbuf;
if (fl->dev_minor == MINOR_NUM_DEV) {
err = -ECONNREFUSED;
ADSPRPC_ERR(
"untrusted app trying to attach to audio PD\n");
return err;
}
if (!init->filelen)
goto bail;