Hello:
This patch was applied to chrome-platform/linux.git (for-kernelci)
by Tzung-Bi Shih <tzungbi@xxxxxxxxxx>:
On Wed, 10 Apr 2024 20:26:19 +0200 you wrote:
> The cros_ec_uart_probe() function calls devm_serdev_device_open() before
> it calls serdev_device_set_client_ops(). This can trigger a NULL pointer
> dereference:
>
> BUG: kernel NULL pointer dereference, address: 0000000000000000
> ...
> CPU: 5 PID: 103 Comm: kworker/u16:3 Not tainted 6.8.4-zen1-1-zen #1 4a88f2661038c2a3bb69aa70fb41a5735338823c
> Hardware name: Google Morphius/Morphius, BIOS MrChromebox-4.22.2-1-g2a93624aebf 01/22/2024
> Workqueue: events_unbound flush_to_ldisc
> RIP: 0010:ttyport_receive_buf+0x3f/0xf0
> ...
> Call Trace:
> <TASK>
> ? __die+0x10f/0x120
> ? page_fault_oops+0x171/0x4e0
> ? srso_return_thunk+0x5/0x5f
> ? exc_page_fault+0x7f/0x180
> ? asm_exc_page_fault+0x26/0x30
> ? ttyport_receive_buf+0x3f/0xf0
> flush_to_ldisc+0x9b/0x1c0
> process_one_work+0x17b/0x340
> worker_thread+0x301/0x490
> ? __pfx_worker_thread+0x10/0x10
> kthread+0xe8/0x120
> ? __pfx_kthread+0x10/0x10
> ret_from_fork+0x34/0x50
> ? __pfx_kthread+0x10/0x10
> ret_from_fork_asm+0x1b/0x30
> </TASK>
>
> [...]
Here is the summary with links:
- platform/chrome: cros_ec_uart: properly fix race condition
https://git.kernel.org/chrome-platform/c/5e700b384ec1
You are awesome, thank you!
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