netdev - Fw: [Bug 208003] New: kernel panic RIP: 0010:__cgroup_bpf_run_filter

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Date:   Mon, 1 Jun 2020 08:22:41 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     netdev@...r.kernel.org
Subject: Fw: [Bug 208003] New: kernel panic RIP:
 0010:__cgroup_bpf_run_filter_skb+0xd9/0x230



Begin forwarded message:

Date: Sun, 31 May 2020 14:08:42 +0000
From: bugzilla-daemon@...zilla.kernel.org
To: stephen@...workplumber.org
Subject: [Bug 208003] New: kernel panic RIP: 0010:__cgroup_bpf_run_filter_skb+0xd9/0x230


https://bugzilla.kernel.org/show_bug.cgi?id=208003

            Bug ID: 208003
           Summary: kernel panic RIP:
                    0010:__cgroup_bpf_run_filter_skb+0xd9/0x230
           Product: Networking
           Version: 2.5
    Kernel Version: 5.6.15
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
          Assignee: stephen@...workplumber.org
          Reporter: karsten.elfenbein@...il.com
        Regression: No

Created attachment 289439
  --> https://bugzilla.kernel.org/attachment.cgi?id=289439&action=edit  
blurry kernel panic :(

I get random kernel panic on one of my systems.
It is running Arch Linux with Kernel 5.6.15-arch1-1 with an AMD Ryzen 5 2400G
and "RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)"
(1462:7a40)

The machine uses a bridge, vlan and docker.
I could only take a photo of the panic as netconsole does not log it.

BUG: kernel NULL pointer dereference, address: 00000000000010
#PF supervisor read access in kernel mode
#PD: error_code(0x0000) - not-present page
PGD 3e65a6067 P4D 3e65a6067 PUD 0
Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 3 PID: 0 Comm: swapper/3 Not tainted 5.6.15-arch1-1 #1
Hardware name: Micro-Star International Co., ltd. MS-7A40/B450I GAMING PLUS AC
(MS-7A40), BIOS A.60 03/06/2019
RIP: 0010:__cgroup_bpf_run_filter_skb+0xd9/0x230
Code: 00 48 01 c8 48 89 43 50 41 83 ff 01 0f 84 c2 00 00 00 e8 ca f2 ec ff e8
85 31 f2 ff 44 89 fa 48 8d 84 d5 30 06 00 00 48 8b 00 <48> 8b 78 10 4c 8d 78 10
48 85 ff 0f 84 29 01 00 00 bd 01 00 00 00
RSP: 0018:ffffad9b402e4758 EFLAGS: 00010206
RAX: 0000000000000000 RBX: ffff93d66b09c900 RCX: 00000000000000f0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff93d67abe8000 R08: 0000000000000000 R09: 0000000000000001
R10: 000000000000b302 R11: ffff93d66b09c9d4 R12: 0000000000000014
R13: 0000000000000014 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS: ffff93d6908c0000(0000) knlGS: 0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000010 CR3: 00000003ecfa0000 CR4: 00000000003406e0
Call Trace:
 <IRQ>
 sk_filter_trim_cap+0x12f/0x270
 ? tcp_v4_inbound_md5_hash+0x5e/0x170
 tcp_v4_rcv+0xb18/0xd80
 ip_protocol_deliver_rcu+0x2b/0x1e0
 ip_local_deliver_finish+0x55&0x70
 ip_local_deliver+0x155/0x130
 ? ip_protocol_deliver_rcu+0x1e0/0x1e0
 ip_sabotage_in+0x5a/0x70 [br_netfilter]
 nf_hook_slow+0x3f/0xb0
 ip_rcv+0xd1/0x110
 ? ip_rev_finish_core.constprop.0+0x470/0x470
 __netif_receive_skb_one_core+0x80/0x90
 netif_receive_skb+0x162/0x1b0
 br_pass_frame_up+0xf0/0x1d0 [bridge]
...

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