Re: [PATCH 6.12 429/444] smb: client: fix netns refcount leak after net_passive changes

Timeline of patches leading to this issue:

• commit ef7134c7fc48 ("smb: client: Fix use-after-free of network namespace.") in v6.12 fixed the original netns UAF by manually managing socket refcounts
• commit e9f2517a3e18 ("smb: client: fix TCP timers deadlock after rmmod") in v6.13 attempted to use kernel sockets but introduced TCP timer issues
• commit 5c70eb5c593d ("net: better track kernel sockets lifetime") in v6.14-rc5 introduced the net_passive mechanism with sk_net_refcnt_upgrade() for proper socket conversion
• commit 95d2b9f693ff ("Revert "smb: client: fix TCP timers deadlock after rmmod"") in v6.15-rc3 reverted to manual refcount management without adapting to the new net_passive changes

Hi Greg,

This patch depends on the preceding patch 5c70eb5c593d ("net: better track kernel sockets lifetime").

I have noticed that version 6.12.y has not imported this patch, so I believe it should not be merged.

Best regards, Wang Zhaolong