Re: [PATCH 5.10 000/131] 5.10.203-rc3 review

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On 05.12.2023 22:22, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.10.203 release.
> There are 131 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Thu, 07 Dec 2023 18:32:16 +0000.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.10.203-rc3.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.10.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h


It seems something is seriously broken in this release.

There are patches already applied in 5.10.202 that are in 5.10.203-rc3
transformed in some strange way, e.g.

Neil Armstrong <narmstrong@xxxxxxxxxxxx>
    tty: serial: meson: retrieve port FIFO size from DT


commit 980c3135f1ae6fe686a70c8ba78eb1bb4bde3060 in 5.10.202

diff --git a/drivers/tty/serial/meson_uart.c
b/drivers/tty/serial/meson_uart.c
index d06653493f0e..78bda91a6bf1 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -728,6 +728,7 @@ static int meson_uart_probe(struct platform_device
*pdev)
 {
        struct resource *res_mem, *res_irq;
        struct uart_port *port;
+       u32 fifosize = 64; /* Default is 64, 128 for EE UART_0 */
        int ret = 0;

        if (pdev->dev.of_node)
@@ -755,6 +756,8 @@ static int meson_uart_probe(struct platform_device
*pdev)
        if (!res_irq)
                return -ENODEV;

+       of_property_read_u32(pdev->dev.of_node, "fifo-size", &fifosize);
+
        if (meson_ports[pdev->id]) {
                dev_err(&pdev->dev, "port %d already allocated\n",
pdev->id);
                return -EBUSY;
@@ -784,7 +787,7 @@ static int meson_uart_probe(struct platform_device
*pdev)
        port->type = PORT_MESON;
        port->x_char = 0;
        port->ops = &meson_uart_ops;
-       port->fifosize = 64;
+       port->fifosize = fifosize;

        meson_ports[pdev->id] = port;
        platform_set_drvdata(pdev, port);

vs.

commit 71feab929585232694b4f2fb7d70abde4edc581e in 5.10.203-rc3

diff --git a/drivers/tty/serial/meson_uart.c
b/drivers/tty/serial/meson_uart.c
index bb66a3f06626..c44ab21a9b7d 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -765,6 +765,8 @@ static int meson_uart_probe(struct platform_device
*pdev)
        of_property_read_u32(pdev->dev.of_node, "fifo-size", &fifosize);
        has_rtscts = of_property_read_bool(pdev->dev.of_node,
"uart-has-rtscts");

+       of_property_read_u32(pdev->dev.of_node, "fifo-size", &fifosize);
+
        if (meson_ports[pdev->id]) {
                dev_err(&pdev->dev, "port %d already allocated\n",
pdev->id);
                return -EBUSY;



Found by Linux Verification Center (linuxtesting.org) with SVACE



See also:

Qu Huang <qu.huang@xxxxxxxxx>
    drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL

Axel Lin <axel.lin@xxxxxxxxxx>
    i2c: sun6i-p2wi: Prevent potential division by zero

Takashi Iwai <tiwai@xxxxxxx>
    media: imon: fix access to invalid resource for the second interface


Also there is a strange pair:

Patrick Thompson <ptf@xxxxxxxxxx>
    net: r8169: Disable multicast filter for RTL8168H and RTL8107E

Heiner Kallweit <hkallweit1@xxxxxxxxx>
    Revert "net: r8169: Disable multicast filter for RTL8168H and RTL8107E"


--
Alexey Khoroshilov
Linux Verification Center, ISPRAS




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