Re: [PATCH net] tipc: protect received keys from concurrent flush

["Jérémy Jean" <jeremy.jean@oss.cyber.gouv.fr>]

On 2026-10-02 14:50, Tung Quang Nguyen wrote:
>>>>  [   12.986077] BUG: KASAN: double-free in
>>>> tipc_crypto_key_flush+0x401/0x530
>>>>  [   12.987937] Free of addr ff11000002268080 by task peer/112
>>>>  ...
>>>>  [   12.991938]  kfree+0x163/0x430
>>>>  ...
>>>>  [   12.991983]  tipc_crypto_key_flush+0x401/0x530
>>>>  ...
>>>>  [   12.992152]  tipc_nl_node_flush_key+0x174/0x210
>>>> 
>>> Please update your changelog with decoded stack trace.
>> 
>> You mean the full trace including the parts I snipped?
> 
> A full stack trace would help me track back the calling flow. Of 
> course, your need to decode (e.g, +0x174/0x210 to line number etc.) the 
> stack trace using:
> linux/scripts/decode_stacktrace.sh

Thanks for this advice, I never used that but will tkae a look.

>>> Do you have a reproducer ?
>> 
>> Yes, I have.
> 
> Please share it to me. It could be good to run and observe if there is 
> another stack trace based on different conditions (other concurrencies 
> etc.)

No problem, I will do that shortly.

Regards,
Jérémy