From: Jakub Kicinski <kuba@kernel.org>
To: Petr Machata <petrm@nvidia.com>
Cc: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
"David Ahern" <dsahern@gmail.com>, <netdev@vger.kernel.org>,
Simon Horman <horms@kernel.org>,
Nikolay Aleksandrov <razor@blackwall.org>,
Ido Schimmel <idosch@nvidia.com>, <mlxsw@nvidia.com>,
Kuniyuki Iwashima <kuniyu@google.com>
Subject: Re: [PATCH net-next 00/14] ipmr, ip6mr: Allow MC-routing locally-generated MC packets
Date: Wed, 11 Jun 2025 13:23:20 -0700 [thread overview]
Message-ID: <20250611132320.53c5bebc@kernel.org> (raw)
In-Reply-To: <87o6uui6f7.fsf@nvidia.com>
On Wed, 11 Jun 2025 17:30:15 +0200 Petr Machata wrote:
> Could it actually have been caused by another test? The howto page
> mentions that the CI is running the tests one at a time, so I don't
> suppose that's a possibility.
>
> I'll try to run a more fuller suite tomorrow and star at the code a bit
> to see if I might be missing an error branch or something.
We also hit a crash in ipv6 fcnal.sh, too. Looks like this is either a
kmemleak false positive or possibly related to the rtnl changes in ipv6.
Either way I it's not related to you changes, sorry about that! :(
[ 2900.792890] BUG: kernel NULL pointer dereference, address: 0000000000000108
[ 2900.792961] #PF: supervisor read access in kernel mode
[ 2900.793017] #PF: error_code(0x0000) - not-present page
[ 2900.793053] PGD 8fd6067 P4D 8fd6067 PUD 6402067 PMD 0
[ 2900.793097] Oops: Oops: 0000 [#1] SMP NOPTI
[ 2900.793127] CPU: 0 UID: 0 PID: 15652 Comm: nettest Not tainted 6.15.0-virtme #1 PREEMPT(voluntary)
[ 2900.793200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2900.793245] RIP: 0010:ip6_pol_route+0x286/0x4a0
[ 2900.793290] Code: 0c 24 0f 85 fb 01 00 00 09 ca 0f 88 2f 01 00 00 e8 cf 11 43 ff 83 cb 08 48 8d 7c 24 18 e8 32 7b ff ff 0f b7 cb ba ff ff ff ff <4c> 8b 80 08 01 00 00 48 89 c6 49 89 c7 49 8d b8 80 06 00 00 4c 89
[ 2900.793422] RSP: 0018:ffffc08a0932f480 EFLAGS: 00010246
[ 2900.793460] RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000008
[ 2900.793521] RDX: 00000000ffffffff RSI: ffffc08a0932f740 RDI: ffff9adac8c8f1a8
[ 2900.793580] RBP: ffff9adac87458c0 R08: 0000000000000000 R09: 0000000000000000
[ 2900.793635] R10: 0000000000000000 R11: 0000000000000040 R12: ffff9adac82e362c
[ 2900.793692] R13: ffff9adac82e3600 R14: 0000000000000080 R15: 0000000000000000
[ 2900.793752] FS: 00007f3418913740(0000) GS:ffff9adb7373a000(0000) knlGS:0000000000000000
[ 2900.793816] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2900.793864] CR2: 0000000000000108 CR3: 0000000008007004 CR4: 0000000000772ef0
[ 2900.793920] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2900.793977] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2900.794031] PKRU: 55555554
[ 2900.794050] Call Trace:
[ 2900.794070] <TASK>
[ 2900.794090] ? __pfx_ip6_pol_route_output+0x10/0x10
[ 2900.794131] fib6_rule_action+0xe3/0x310
[ 2900.794166] fib_rules_lookup+0x1b2/0x2b0
[ 2900.794200] ? __pfx_ip6_pol_route_output+0x10/0x10
[ 2900.794241] fib6_rule_lookup+0xa9/0x270
[ 2900.794271] ? __pfx_ip6_pol_route_output+0x10/0x10
[ 2900.794310] ip6_route_output_flags+0xab/0x180
[ 2900.794353] ip6_dst_lookup_tail.constprop.0+0x282/0x340
[ 2900.794394] ip6_dst_lookup_flow+0x46/0xc0
[ 2900.794422] vrf_xmit+0x100/0x4a0
[ 2900.794459] dev_hard_start_xmit+0x8d/0x1c0
https://netdev-3.bots.linux.dev/vmksft-net/results/160541/vm-crash-thr0-0
next prev parent reply other threads:[~2025-06-11 20:23 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-09 20:50 [PATCH net-next 00/14] ipmr, ip6mr: Allow MC-routing locally-generated MC packets Petr Machata
2025-06-09 20:50 ` [PATCH net-next 01/14] net: ipv4: Add a flags argument to iptunnel_xmit(), udp_tunnel_xmit_skb() Petr Machata
2025-06-12 10:28 ` Nikolay Aleksandrov
2025-06-12 11:21 ` Antonio Quartulli
2025-06-09 20:50 ` [PATCH net-next 02/14] net: ipv4: ipmr: ipmr_queue_xmit(): Drop local variable `dev' Petr Machata
2025-06-12 10:28 ` Nikolay Aleksandrov
2025-06-09 20:50 ` [PATCH net-next 03/14] net: ipv4: ipmr: Split ipmr_queue_xmit() in two Petr Machata
2025-06-12 10:29 ` Nikolay Aleksandrov
2025-06-09 20:50 ` [PATCH net-next 04/14] net: ipv4: Add ip_mr_output() Petr Machata
2025-06-09 20:50 ` [PATCH net-next 05/14] net: ipv6: Make udp_tunnel6_xmit_skb() void Petr Machata
2025-06-12 10:29 ` Nikolay Aleksandrov
2025-06-09 20:50 ` [PATCH net-next 06/14] net: ipv6: Add a flags argument to ip6tunnel_xmit(), udp_tunnel6_xmit_skb() Petr Machata
2025-06-12 10:30 ` Nikolay Aleksandrov
2025-06-09 20:50 ` [PATCH net-next 07/14] net: ipv6: ip6mr: Fix in/out netdev to pass to the FORWARD chain Petr Machata
2025-06-12 10:30 ` Nikolay Aleksandrov
2025-06-09 20:50 ` [PATCH net-next 08/14] net: ipv6: ip6mr: Extract a helper out of ip6mr_forward2() Petr Machata
2025-06-12 10:31 ` Nikolay Aleksandrov
2025-06-09 20:50 ` [PATCH net-next 09/14] net: ipv6: Add ip6_mr_output() Petr Machata
2025-06-12 10:35 ` Nikolay Aleksandrov
2025-06-09 20:50 ` [PATCH net-next 10/14] vxlan: Support MC routing in the underlay Petr Machata
2025-06-12 10:36 ` Nikolay Aleksandrov
2025-06-09 20:50 ` [PATCH net-next 11/14] selftests: forwarding: lib: Move smcrouted helpers here Petr Machata
2025-06-12 10:38 ` Nikolay Aleksandrov
2025-06-09 20:50 ` [PATCH net-next 12/14] selftests: net: lib: Add ip_link_has_flag() Petr Machata
2025-06-12 10:38 ` Nikolay Aleksandrov
2025-06-09 20:50 ` [PATCH net-next 13/14] selftests: forwarding: adf_mcd_start(): Allow configuring custom interfaces Petr Machata
2025-06-12 10:38 ` Nikolay Aleksandrov
2025-06-09 20:50 ` [PATCH net-next 14/14] selftests: forwarding: Add a test for verifying VXLAN MC underlay Petr Machata
2025-06-10 13:02 ` Jakub Kicinski
2025-06-10 16:22 ` Petr Machata
2025-06-10 12:58 ` [PATCH net-next 00/14] ipmr, ip6mr: Allow MC-routing locally-generated MC packets Jakub Kicinski
2025-06-10 13:12 ` Petr Machata
2025-06-11 15:30 ` Petr Machata
2025-06-11 20:23 ` Jakub Kicinski [this message]
2025-06-11 21:03 ` Kuniyuki Iwashima
2025-06-12 12:02 ` Petr Machata
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