From: Jakub Sitnicki <jakub@cloudflare.com>
To: Liu Jian <liujian56@huawei.com>
Cc: john.fastabend@gmail.com, ast@kernel.org, daniel@iogearbox.net,
andrii@kernel.org, martin.lau@linux.dev, song@kernel.org,
yonghong.song@linux.dev, kpsingh@kernel.org, sdf@google.com,
haoluo@google.com, jolsa@kernel.org, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
dsahern@kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org
Subject: Re: [PATCH bpf-next v4 0/7] add BPF_F_PERMANENT flag for sockmap skmsg redirect
Date: Fri, 08 Sep 2023 14:29:11 +0200 [thread overview]
Message-ID: <87o7ickfss.fsf@cloudflare.com> (raw)
In-Reply-To: <20230902100744.2687785-1-liujian56@huawei.com>
On Sat, Sep 02, 2023 at 06:07 PM +08, Liu Jian wrote:
> v3->v4: Change the two helpers's description.
> Let BPF_F_PERMANENT takes precedence over apply/cork_bytes.
Sorry, will need some more time to review this.
I wanted to test it and noticed we have a regression in sockamp in
bpf-next @ 831c4b3f39c7:
# ./test_progs -t sockmap_listen
[ 17.941468] bpf_testmod: loading out-of-tree module taints kernel.
[ 17.941888] bpf_testmod: module verification failed: signature and/or required key missing - tainting kernel
#213/1 sockmap_listen/sockmap IPv4 TCP test_insert_invalid:OK
#213/2 sockmap_listen/sockmap IPv4 TCP test_insert_opened:OK
#213/3 sockmap_listen/sockmap IPv4 TCP test_insert_bound:OK
#213/4 sockmap_listen/sockmap IPv4 TCP test_insert:OK
#213/5 sockmap_listen/sockmap IPv4 TCP test_delete_after_insert:OK
#213/6 sockmap_listen/sockmap IPv4 TCP test_delete_after_close:OK
#213/7 sockmap_listen/sockmap IPv4 TCP test_lookup_after_insert:OK
#213/8 sockmap_listen/sockmap IPv4 TCP test_lookup_after_delete:OK
#213/9 sockmap_listen/sockmap IPv4 TCP test_lookup_32_bit_value:OK
#213/10 sockmap_listen/sockmap IPv4 TCP test_update_existing:OK
#213/11 sockmap_listen/sockmap IPv4 TCP test_destroy_orphan_child:OK
#213/12 sockmap_listen/sockmap IPv4 TCP test_syn_recv_insert_delete:OK
#213/13 sockmap_listen/sockmap IPv4 TCP test_race_insert_listen:OK
#213/14 sockmap_listen/sockmap IPv4 TCP test_clone_after_delete:OK
#213/15 sockmap_listen/sockmap IPv4 TCP test_accept_after_delete:OK
#213/16 sockmap_listen/sockmap IPv4 TCP test_accept_before_delete:OK
#213/17 sockmap_listen/sockmap IPv4 UDP test_insert_invalid:OK
#213/18 sockmap_listen/sockmap IPv4 UDP test_insert_opened:OK
#213/19 sockmap_listen/sockmap IPv4 UDP test_insert:OK
#213/20 sockmap_listen/sockmap IPv4 UDP test_delete_after_insert:OK
#213/21 sockmap_listen/sockmap IPv4 UDP test_delete_after_close:OK
#213/22 sockmap_listen/sockmap IPv4 UDP test_lookup_after_insert:OK
#213/23 sockmap_listen/sockmap IPv4 UDP test_lookup_after_delete:OK
#213/24 sockmap_listen/sockmap IPv4 UDP test_lookup_32_bit_value:OK
#213/25 sockmap_listen/sockmap IPv4 UDP test_update_existing:OK
#213/26 sockmap_listen/sockmap IPv4 test_skb_redir_to_connected:OK
#213/27 sockmap_listen/sockmap IPv4 test_skb_redir_to_listening:OK
#213/28 sockmap_listen/sockmap IPv4 test_skb_redir_partial:OK
#213/29 sockmap_listen/sockmap IPv4 test_msg_redir_to_connected:OK
#213/30 sockmap_listen/sockmap IPv4 test_msg_redir_to_listening:OK
#213/31 sockmap_listen/sockmap IPv4 TCP test_reuseport_select_listening:OK
#213/32 sockmap_listen/sockmap IPv4 TCP test_reuseport_select_connected:OK
#213/33 sockmap_listen/sockmap IPv4 TCP test_reuseport_mixed_groups:OK
#213/34 sockmap_listen/sockmap IPv4 UDP test_reuseport_select_listening:OK
#213/35 sockmap_listen/sockmap IPv4 UDP test_reuseport_select_connected:OK
#213/36 sockmap_listen/sockmap IPv4 UDP test_reuseport_mixed_groups:OK
#213/37 sockmap_listen/sockmap IPv4 test_udp_redir:OK
#213/38 sockmap_listen/sockmap IPv4 test_udp_unix_redir:OK
#213/39 sockmap_listen/sockmap IPv6 TCP test_insert_invalid:OK
#213/40 sockmap_listen/sockmap IPv6 TCP test_insert_opened:OK
#213/41 sockmap_listen/sockmap IPv6 TCP test_insert_bound:OK
#213/42 sockmap_listen/sockmap IPv6 TCP test_insert:OK
#213/43 sockmap_listen/sockmap IPv6 TCP test_delete_after_insert:OK
#213/44 sockmap_listen/sockmap IPv6 TCP test_delete_after_close:OK
#213/45 sockmap_listen/sockmap IPv6 TCP test_lookup_after_insert:OK
#213/46 sockmap_listen/sockmap IPv6 TCP test_lookup_after_delete:OK
#213/47 sockmap_listen/sockmap IPv6 TCP test_lookup_32_bit_value:OK
#213/48 sockmap_listen/sockmap IPv6 TCP test_update_existing:OK
#213/49 sockmap_listen/sockmap IPv6 TCP test_destroy_orphan_child:OK
#213/50 sockmap_listen/sockmap IPv6 TCP test_syn_recv_insert_delete:OK
#213/51 sockmap_listen/sockmap IPv6 TCP test_race_insert_listen:OK
#213/52 sockmap_listen/sockmap IPv6 TCP test_clone_after_delete:OK
#213/53 sockmap_listen/sockmap IPv6 TCP test_accept_after_delete:OK
#213/54 sockmap_listen/sockmap IPv6 TCP test_accept_before_delete:OK
#213/55 sockmap_listen/sockmap IPv6 UDP test_insert_invalid:OK
#213/56 sockmap_listen/sockmap IPv6 UDP test_insert_opened:OK
#213/57 sockmap_listen/sockmap IPv6 UDP test_insert:OK
#213/58 sockmap_listen/sockmap IPv6 UDP test_delete_after_insert:OK
#213/59 sockmap_listen/sockmap IPv6 UDP test_delete_after_close:OK
#213/60 sockmap_listen/sockmap IPv6 UDP test_lookup_after_insert:OK
#213/61 sockmap_listen/sockmap IPv6 UDP test_lookup_after_delete:OK
#213/62 sockmap_listen/sockmap IPv6 UDP test_lookup_32_bit_value:OK
#213/63 sockmap_listen/sockmap IPv6 UDP test_update_existing:OK
#213/64 sockmap_listen/sockmap IPv6 test_skb_redir_to_connected:OK
#213/65 sockmap_listen/sockmap IPv6 test_skb_redir_to_listening:OK
#213/66 sockmap_listen/sockmap IPv6 test_skb_redir_partial:OK
#213/67 sockmap_listen/sockmap IPv6 test_msg_redir_to_connected:OK
#213/68 sockmap_listen/sockmap IPv6 test_msg_redir_to_listening:OK
#213/69 sockmap_listen/sockmap IPv6 TCP test_reuseport_select_listening:OK
#213/70 sockmap_listen/sockmap IPv6 TCP test_reuseport_select_connected:OK
#213/71 sockmap_listen/sockmap IPv6 TCP test_reuseport_mixed_groups:OK
#213/72 sockmap_listen/sockmap IPv6 UDP test_reuseport_select_listening:OK
#213/73 sockmap_listen/sockmap IPv6 UDP test_reuseport_select_connected:OK
#213/74 sockmap_listen/sockmap IPv6 UDP test_reuseport_mixed_groups:OK
#213/75 sockmap_listen/sockmap IPv6 test_udp_redir:OK
#213/76 sockmap_listen/sockmap IPv6 test_udp_unix_redir:OK
#213/77 sockmap_listen/sockmap Unix test_unix_redir:OK
#213/78 sockmap_listen/sockmap Unix test_unix_redir:OK
./test_progs:vsock_unix_redir_connectible:1501: egress: write: Transport endpoint is not connected
vsock_unix_redir_connectible:FAIL:1501
#213/79 sockmap_listen/sockmap VSOCK test_vsock_redir:FAIL
#213/80 sockmap_listen/sockhash IPv4 TCP test_insert_invalid:OK
#213/81 sockmap_listen/sockhash IPv4 TCP test_insert_opened:OK
#213/82 sockmap_listen/sockhash IPv4 TCP test_insert_bound:OK
#213/83 sockmap_listen/sockhash IPv4 TCP test_insert:OK
#213/84 sockmap_listen/sockhash IPv4 TCP test_delete_after_insert:OK
#213/85 sockmap_listen/sockhash IPv4 TCP test_delete_after_close:OK
#213/86 sockmap_listen/sockhash IPv4 TCP test_lookup_after_insert:OK
#213/87 sockmap_listen/sockhash IPv4 TCP test_lookup_after_delete:OK
#213/88 sockmap_listen/sockhash IPv4 TCP test_lookup_32_bit_value:OK
#213/89 sockmap_listen/sockhash IPv4 TCP test_update_existing:OK
#213/90 sockmap_listen/sockhash IPv4 TCP test_destroy_orphan_child:OK
#213/91 sockmap_listen/sockhash IPv4 TCP test_syn_recv_insert_delete:OK
#213/92 sockmap_listen/sockhash IPv4 TCP test_race_insert_listen:OK
#213/93 sockmap_listen/sockhash IPv4 TCP test_clone_after_delete:OK
#213/94 sockmap_listen/sockhash IPv4 TCP test_accept_after_delete:OK
#213/95 sockmap_listen/sockhash IPv4 TCP test_accept_before_delete:OK
#213/96 sockmap_listen/sockhash IPv4 UDP test_insert_invalid:OK
#213/97 sockmap_listen/sockhash IPv4 UDP test_insert_opened:OK
#213/98 sockmap_listen/sockhash IPv4 UDP test_insert:OK
#213/99 sockmap_listen/sockhash IPv4 UDP test_delete_after_insert:OK
#213/100 sockmap_listen/sockhash IPv4 UDP test_delete_after_close:OK
#213/101 sockmap_listen/sockhash IPv4 UDP test_lookup_after_insert:OK
#213/102 sockmap_listen/sockhash IPv4 UDP test_lookup_after_delete:OK
#213/103 sockmap_listen/sockhash IPv4 UDP test_lookup_32_bit_value:OK
#213/104 sockmap_listen/sockhash IPv4 UDP test_update_existing:OK
#213/105 sockmap_listen/sockhash IPv4 test_skb_redir_to_connected:OK
#213/106 sockmap_listen/sockhash IPv4 test_skb_redir_to_listening:OK
#213/107 sockmap_listen/sockhash IPv4 test_skb_redir_partial:OK
#213/108 sockmap_listen/sockhash IPv4 test_msg_redir_to_connected:OK
#213/109 sockmap_listen/sockhash IPv4 test_msg_redir_to_listening:OK
#213/110 sockmap_listen/sockhash IPv4 TCP test_reuseport_select_listening:OK
#213/111 sockmap_listen/sockhash IPv4 TCP test_reuseport_select_connected:OK
#213/112 sockmap_listen/sockhash IPv4 TCP test_reuseport_mixed_groups:OK
#213/113 sockmap_listen/sockhash IPv4 UDP test_reuseport_select_listening:OK
#213/114 sockmap_listen/sockhash IPv4 UDP test_reuseport_select_connected:OK
#213/115 sockmap_listen/sockhash IPv4 UDP test_reuseport_mixed_groups:OK
#213/116 sockmap_listen/sockhash IPv4 test_udp_redir:OK
#213/117 sockmap_listen/sockhash IPv4 test_udp_unix_redir:OK
#213/118 sockmap_listen/sockhash IPv6 TCP test_insert_invalid:OK
#213/119 sockmap_listen/sockhash IPv6 TCP test_insert_opened:OK
#213/120 sockmap_listen/sockhash IPv6 TCP test_insert_bound:OK
#213/121 sockmap_listen/sockhash IPv6 TCP test_insert:OK
#213/122 sockmap_listen/sockhash IPv6 TCP test_delete_after_insert:OK
#213/123 sockmap_listen/sockhash IPv6 TCP test_delete_after_close:OK
#213/124 sockmap_listen/sockhash IPv6 TCP test_lookup_after_insert:OK
#213/125 sockmap_listen/sockhash IPv6 TCP test_lookup_after_delete:OK
#213/126 sockmap_listen/sockhash IPv6 TCP test_lookup_32_bit_value:OK
#213/127 sockmap_listen/sockhash IPv6 TCP test_update_existing:OK
#213/128 sockmap_listen/sockhash IPv6 TCP test_destroy_orphan_child:OK
#213/129 sockmap_listen/sockhash IPv6 TCP test_syn_recv_insert_delete:OK
#213/130 sockmap_listen/sockhash IPv6 TCP test_race_insert_listen:OK
#213/131 sockmap_listen/sockhash IPv6 TCP test_clone_after_delete:OK
#213/132 sockmap_listen/sockhash IPv6 TCP test_accept_after_delete:OK
#213/133 sockmap_listen/sockhash IPv6 TCP test_accept_before_delete:OK
#213/134 sockmap_listen/sockhash IPv6 UDP test_insert_invalid:OK
#213/135 sockmap_listen/sockhash IPv6 UDP test_insert_opened:OK
#213/136 sockmap_listen/sockhash IPv6 UDP test_insert:OK
#213/137 sockmap_listen/sockhash IPv6 UDP test_delete_after_insert:OK
#213/138 sockmap_listen/sockhash IPv6 UDP test_delete_after_close:OK
#213/139 sockmap_listen/sockhash IPv6 UDP test_lookup_after_insert:OK
#213/140 sockmap_listen/sockhash IPv6 UDP test_lookup_after_delete:OK
#213/141 sockmap_listen/sockhash IPv6 UDP test_lookup_32_bit_value:OK
#213/142 sockmap_listen/sockhash IPv6 UDP test_update_existing:OK
#213/143 sockmap_listen/sockhash IPv6 test_skb_redir_to_connected:OK
#213/144 sockmap_listen/sockhash IPv6 test_skb_redir_to_listening:OK
#213/145 sockmap_listen/sockhash IPv6 test_skb_redir_partial:OK
#213/146 sockmap_listen/sockhash IPv6 test_msg_redir_to_connected:OK
#213/147 sockmap_listen/sockhash IPv6 test_msg_redir_to_listening:OK
#213/148 sockmap_listen/sockhash IPv6 TCP test_reuseport_select_listening:OK
#213/149 sockmap_listen/sockhash IPv6 TCP test_reuseport_select_connected:OK
#213/150 sockmap_listen/sockhash IPv6 TCP test_reuseport_mixed_groups:OK
#213/151 sockmap_listen/sockhash IPv6 UDP test_reuseport_select_listening:OK
#213/152 sockmap_listen/sockhash IPv6 UDP test_reuseport_select_connected:OK
#213/153 sockmap_listen/sockhash IPv6 UDP test_reuseport_mixed_groups:OK
#213/154 sockmap_listen/sockhash IPv6 test_udp_redir:OK
#213/155 sockmap_listen/sockhash IPv6 test_udp_unix_redir:OK
#213/156 sockmap_listen/sockhash Unix test_unix_redir:OK
#213/157 sockmap_listen/sockhash Unix test_unix_redir:OK
./test_progs:vsock_unix_redir_connectible:1501: egress: write: Transport endpoint is not connected
vsock_unix_redir_connectible:FAIL:1501
./test_progs:vsock_unix_redir_connectible:1501: egress: write: Transport endpoint is not connected
vsock_unix_redir_connectible:FAIL:1501
./test_progs:vsock_unix_redir_connectible:1501: ingress: write: Transport endpoint is not connected
vsock_unix_redir_connectible:FAIL:1501
#213/158 sockmap_listen/sockhash VSOCK test_vsock_redir:FAIL
#213 sockmap_listen:FAIL
All error logs:
./test_progs:vsock_unix_redir_connectible:1501: egress: write: Transport endpoint is not connected
vsock_unix_redir_connectible:FAIL:1501
#213/79 sockmap_listen/sockmap VSOCK test_vsock_redir:FAIL
./test_progs:vsock_unix_redir_connectible:1501: egress: write: Transport endpoint is not connected
vsock_unix_redir_connectible:FAIL:1501
./test_progs:vsock_unix_redir_connectible:1501: egress: write: Transport endpoint is not connected
vsock_unix_redir_connectible:FAIL:1501
./test_progs:vsock_unix_redir_connectible:1501: ingress: write: Transport endpoint is not connected
vsock_unix_redir_connectible:FAIL:1501
#213/158 sockmap_listen/sockhash VSOCK test_vsock_redir:FAIL
#213 sockmap_listen:FAIL
Summary: 0/156 PASSED, 0 SKIPPED, 1 FAILED
[ 18.853649] BUG: kernel NULL pointer dereference, address: 0000000000000008
[ 18.854041] #PF: supervisor write access in kernel mode
[ 18.854337] #PF: error_code(0x0002) - not-present page
[ 18.854605] PGD 104826067 P4D 104826067 PUD 104825067 PMD 0
[ 18.854918] Oops: 0002 [#1] PREEMPT SMP NOPTI
[ 18.855171] CPU: 3 PID: 50 Comm: kworker/3:1 Tainted: G OE 6.5.0+ #8
[ 18.855592] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-1.fc38 04/01/2014
[ 18.856051] Workqueue: events sk_psock_destroy
[ 18.856294] RIP: 0010:skb_dequeue+0x4b/0x70
[ 18.856524] Code: 74 45 4d 85 e4 74 40 8b 43 10 83 e8 01 89 43 10 49 8b 14 24 49 8b 44 24 08 49 c7 04 24 00 00 00 00 49 c7 44 24 08 00 00 00 00 <48> 89 42 08 48 89 10 4c 89 ef e8 e6 24 3b 00 4c 89 e0 5b 41 5c 41
[ 18.857516] RSP: 0018:ffffc900002cbdc0 EFLAGS: 00010097
[ 18.857798] RAX: 0000000000000000 RBX: ffff88810685e1b8 RCX: 363a88e2d5498366
[ 18.858186] RDX: 0000000000000000 RSI: 0000000000000282 RDI: ffff88810685e1d0
[ 18.858568] RBP: ffffc900002cbdd8 R08: 0000000000000000 R09: 0000000000080000
[ 18.858961] R10: 0000000000000394 R11: 0000000000000001 R12: ffff888102468b00
[ 18.859346] R13: ffff88810685e1d0 R14: ffff8881003da000 R15: ffff88810685e438
[ 18.859735] FS: 0000000000000000(0000) GS:ffff88813bd80000(0000) knlGS:0000000000000000
[ 18.860177] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 18.860486] CR2: 0000000000000008 CR3: 000000010480e005 CR4: 0000000000770ea0
[ 18.860868] PKRU: 55555554
[ 18.861017] Call Trace:
[ 18.861155] <TASK>
[ 18.861273] ? show_regs+0x60/0x70
[ 18.861468] ? __die+0x1f/0x70
[ 18.861633] ? page_fault_oops+0x80/0x160
[ 18.861845] ? do_user_addr_fault+0x320/0x7b0
[ 18.862084] ? __this_cpu_preempt_check+0x13/0x20
[ 18.862348] ? exc_page_fault+0x70/0x1c0
[ 18.862562] ? asm_exc_page_fault+0x27/0x30
[ 18.862785] ? skb_dequeue+0x4b/0x70
[ 18.862986] sk_psock_destroy+0x88/0x2e0
[ 18.863205] process_one_work+0x264/0x550
[ 18.863420] worker_thread+0x4d/0x3c0
[ 18.863624] ? process_one_work+0x550/0x550
[ 18.863855] kthread+0x106/0x140
[ 18.864031] ? kthread_complete_and_exit+0x20/0x20
[ 18.864281] ret_from_fork+0x35/0x60
[ 18.864480] ? kthread_complete_and_exit+0x20/0x20
[ 18.864730] ret_from_fork_asm+0x11/0x20
[ 18.864948] </TASK>
[ 18.865075] Modules linked in: bpf_testmod(OE)
[ 18.865320] CR2: 0000000000000008
[ 18.865493] ---[ end trace 0000000000000000 ]---
[ 18.865746] RIP: 0010:skb_dequeue+0x4b/0x70
[ 18.865976] Code: 74 45 4d 85 e4 74 40 8b 43 10 83 e8 01 89 43 10 49 8b 14 24 49 8b 44 24 08 49 c7 04 24 00 00 00 00 49 c7 44 24 08 00 00 00 00 <48> 89 42 08 48 89 10 4c 89 ef e8 e6 24 3b 00 4c 89 e0 5b 41 5c 41
[ 18.866968] RSP: 0018:ffffc900002cbdc0 EFLAGS: 00010097
[ 18.867246] RAX: 0000000000000000 RBX: ffff88810685e1b8 RCX: 363a88e2d5498366
[ 18.867638] RDX: 0000000000000000 RSI: 0000000000000282 RDI: ffff88810685e1d0
[ 18.868028] RBP: ffffc900002cbdd8 R08: 0000000000000000 R09: 0000000000080000
[ 18.868407] R10: 0000000000000394 R11: 0000000000000001 R12: ffff888102468b00
[ 18.868801] R13: ffff88810685e1d0 R14: ffff8881003da000 R15: ffff88810685e438
[ 18.869190] FS: 0000000000000000(0000) GS:ffff88813bd80000(0000) knlGS:0000000000000000
[ 18.869624] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 18.869944] CR2: 0000000000000008 CR3: 000000010480e005 CR4: 0000000000770ea0
[ 18.870327] PKRU: 55555554
[ 18.870486] Kernel panic - not syncing: Fatal exception
[ 18.870856] Kernel Offset: disabled
next prev parent reply other threads:[~2023-09-08 12:31 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-02 10:07 [PATCH bpf-next v4 0/7] add BPF_F_PERMANENT flag for sockmap skmsg redirect Liu Jian
2023-09-02 10:07 ` [PATCH bpf-next v4 1/7] bpf, sockmap: add BPF_F_PERMANENT flag for " Liu Jian
2023-09-02 10:07 ` [PATCH bpf-next v4 2/7] selftests/bpf: Add txmsg permanently test for sockmap Liu Jian
2023-09-02 10:07 ` [PATCH bpf-next v4 3/7] selftests/bpf: Add txmsg redir " Liu Jian
2023-09-02 10:07 ` [PATCH bpf-next v4 4/7] selftests/bpf: add skmsg verdict tests Liu Jian
2023-09-02 10:07 ` [PATCH bpf-next v4 5/7] selftests/bpf: add two skmsg verdict tests for BPF_F_PERMANENT flag Liu Jian
2023-09-02 10:07 ` [PATCH bpf-next v4 6/7] selftests/bpf: add tests for verdict skmsg to itself Liu Jian
2023-09-02 10:07 ` [PATCH bpf-next v4 7/7] selftests/bpf: add tests for verdict skmsg to closed socket Liu Jian
2023-09-08 12:29 ` Jakub Sitnicki [this message]
2023-09-08 13:45 ` [PATCH bpf-next v4 0/7] add BPF_F_PERMANENT flag for sockmap skmsg redirect Daniel Borkmann
2023-09-12 17:21 ` Jakub Sitnicki
2023-09-15 1:05 ` liujian (CE)
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