netdev - Re: [PATCH v1 net-next 0/7] ipv6: Follow up for RTNL-free RTM

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Message-ID: <20250514184502.22f4c4e6@kernel.org>
Date: Wed, 14 May 2025 18:45:02 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Kuniyuki Iwashima <kuniyu@...zon.com>
Cc: "David S. Miller" <davem@...emloft.net>, David Ahern
 <dsahern@...nel.org>, Eric Dumazet <edumazet@...gle.com>, "Paolo Abeni"
 <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, Kuniyuki Iwashima
 <kuni1840@...il.com>, <netdev@...r.kernel.org>
Subject: Re: [PATCH v1 net-next 0/7] ipv6: Follow up for RTNL-free
 RTM_NEWROUTE series.

On Wed, 14 May 2025 13:18:53 -0700 Kuniyuki Iwashima wrote:
> Patch 1 removes rcu_read_lock() in fib6_get_table().
> Patch 2 removes rtnl_is_held arg for lwtunnel_valid_encap_type(), which
>  was short-term fix and is no longer used.
> Patch 3 fixes RCU vs GFP_KERNEL report by syzkaller.
> Patch 4~7 reverts GFP_ATOMIC uses to GFP_KERNEL.

Hi! Something in the following set of patches is making our CI time out.
The problem seems to be:

[    0.751266] virtme-init: waiting for udev to settle
Timed out for waiting the udev queue being empty.
[  120.826428] virtme-init: udev is done

+team: grab team lock during team_change_rx_flags
+net: mana: Add handler for hardware servicing events
+ipv6: Revert two per-cpu var allocation for RTM_NEWROUTE.
+ipv6: Pass gfp_flags down to ip6_route_info_create_nh().
+Revert "ipv6: Factorise ip6_route_multipath_add()."
+Revert "ipv6: sr: switch to GFP_ATOMIC flag to allocate memory during seg6local LWT setup"
+ipv6: Narrow down RCU critical section in inet6_rtm_newroute().
+inet: Remove rtnl_is_held arg of lwtunnel_valid_encap_type(_attr)?().
+ipv6: Remove rcu_read_lock() in fib6_get_table().
+net/mlx5e: Reuse per-RQ XDP buffer to avoid stack zeroing overhead
 amd-xgbe: read link status twice to avoid inconsistencies
+net: phy: fixed_phy: remove fixed_phy_register_with_gpiod
 drivers: net: mvpp2: attempt to refill rx before allocating skb
+selftest: af_unix: Test SO_PASSRIGHTS.
+af_unix: Introduce SO_PASSRIGHTS.
+af_unix: Inherit sk_flags at connect().
+af_unix: Move SOCK_PASS{CRED,PIDFD,SEC} to struct sock.
+net: Restrict SO_PASS{CRED,PIDFD,SEC} to AF_{UNIX,NETLINK,BLUETOOTH}.
+tcp: Restrict SO_TXREHASH to TCP socket.
+scm: Move scm_recv() from scm.h to scm.c.
+af_unix: Don't pass struct socket to maybe_add_creds().
+af_unix: Factorise test_bit() for SOCK_PASSCRED and SOCK_PASSPIDFD.

I haven't dug into it, gotta review / apply other patches :(
Maybe you can try to repro?