Hello:
This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@xxxxxxxxxx>:
On Tue, 27 Jun 2023 12:03:40 +0000 you wrote:
> As &net->sctp.addr_wq_lock is also acquired by the timer
> sctp_addr_wq_timeout_handler() in protocal.c, the same lock acquisition
> at sctp_auto_asconf_init() seems should disable irq since it is called
> from sctp_accept() under process context.
>
> Possible deadlock scenario:
> sctp_accept()
> -> sctp_sock_migrate()
> -> sctp_auto_asconf_init()
> -> spin_lock(&net->sctp.addr_wq_lock)
> <timer interrupt>
> -> sctp_addr_wq_timeout_handler()
> -> spin_lock_bh(&net->sctp.addr_wq_lock); (deadlock here)
>
> [...]
Here is the summary with links:
- sctp: fix potential deadlock on &net->sctp.addr_wq_lock
https://git.kernel.org/netdev/net/c/6feb37b3b06e
You are awesome, thank you!
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