Kernel fault with default tempesta config

[vladtcvs]

How to reproduce:

install tempesta
don't install backend and don't change config files
start tempesta
wget http://127.0.0.1:80

kernel falls with Invalid opcode 0000

[vladtcvs]

Log:

[tdb] Start Tempesta DB
[tempesta] Initializing Tempesta FW kernel module...
[tempesta] Registering new scheduler: hash
[tempesta] Registering new scheduler: http
[tempesta] Registering new scheduler: round-robin
[tempesta] got state via sysctl: start
[tempesta] starting all modules...
[tdb] Opened table /opt/tempesta/db/filter.tdb: size=16777216 rec_size=20 base=ffff88003d400000
[tdb] Opened table /opt/tempesta/db/cache.tdb: size=268435456 rec_size=0 base=ffff88002d400000
[tempesta] Open listen socket on: 0.0.0.0
[tempesta] modules are started
invalid opcode: 0000 [#1] SMP 
Modules linked in: tfw_sched_rr(O) tfw_sched_http(O) tfw_sched_hash(O) tempesta_fw(O) tempesta_db(O) ipv6 fuse ppdev e1000 floppy i2c_piix4 i2c_core serio_raw parport_pc pcspkr parport
CPU: 0 PID: 1781 Comm: wget Tainted: G           O 3.10.10+ #6
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
task: ffff88001beee7f0 ti: ffff88001d1d2000 task.ti: ffff88001d1d2000
RIP: 0010:[<ffffffffa012a9d3>]  [<ffffffffa012a9d3>] tfw_hash_str+0xc3/0x100 [tempesta_fw]
RSP: 0018:ffff88003fc03a98  EFLAGS: 00010206
RAX: 00000000ffffffff RBX: ffff88001bc14020 RCX: 0000000000000048
RDX: ffff88001d1cd910 RSI: ffff88001d1cd910 RDI: ffff88001bc142f0
RBP: ffff88003fc03a98 R08: ffff88001d1cd916 R09: ffff88001bc14320
R10: ffff88001d1cd910 R11: ffff88001d1cd910 R12: ffff88001bc14020
R13: 0000000000000000 R14: ffff88001bc14020 R15: ffff88001db8aa08
FS:  00007f757169a780(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f75703ac280 CR3: 000000001d1e5000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Stack:
 ffff88003fc03ab8 ffffffffa012ad0f ffff88001bc14020 ffffffffa012b110
 ffff88003fc03ae8 ffffffffa01275cb 000000000000006b 0000000000000000
 ffff88001c12a608 ffff88001bc14020 ffff88003fc03b38 ffffffffa012b701
Call Trace:
 <IRQ> 
 [<ffffffffa012ad0f>] tfw_http_req_key_calc+0x2f/0x50 [tempesta_fw]
 [<ffffffffa012b110>] ? tfw_http_conn_msg_free+0x70/0x70 [tempesta_fw]
 [<ffffffffa01275cb>] tfw_cache_req_process+0x2b/0xe0 [tempesta_fw]
 [<ffffffffa012b701>] tfw_http_msg_process+0x301/0x3f0 [tempesta_fw]
 [<ffffffff8110a71e>] ? __get_free_pages+0xe/0x50
 [<ffffffffa012a6b7>] __gfsm_fsm_exec+0x67/0xa0 [tempesta_fw]
 [<ffffffffa012a904>] tfw_gfsm_dispatch+0x14/0x20 [tempesta_fw]
 [<ffffffffa0129e42>] tfw_connection_recv+0x32/0xc0 [tempesta_fw]
 [<ffffffffa0139675>] ss_tcp_process_data+0x165/0x350 [tempesta_fw]
 [<ffffffffa013a81f>] ss_tcp_data_ready+0x3f/0x80 [tempesta_fw]
 [<ffffffff81469b57>] tcp_data_queue+0x457/0xcd0
 [<ffffffff8146cdd7>] tcp_rcv_established+0x1b7/0x890
 [<ffffffff81478414>] tcp_v4_do_rcv+0x1b4/0x500
 [<ffffffffa011b8b7>] ? tdb_htrie_lookup+0x47/0x60 [tempesta_db]
 [<ffffffff81245407>] ? tempesta_sock_tcp_rcv+0x27/0x30
 [<ffffffff814796de>] tcp_v4_rcv+0x6fe/0x7f0
 [<ffffffff814529b4>] ip_local_deliver_finish+0xd4/0x210
 [<ffffffff81452cc8>] ip_local_deliver+0x88/0x90
 [<ffffffff81452633>] ip_rcv_finish+0x83/0x330
 [<ffffffff81452f40>] ip_rcv+0x270/0x340
 [<ffffffff8141a99a>] __netif_receive_skb_core+0x40a/0x8a0
 [<ffffffffa0062f2f>] ? e1000_clean+0x39f/0x9e0 [e1000]
 [<ffffffff8141ae4b>] __netif_receive_skb+0x1b/0x70
 [<ffffffff8141b9e4>] process_backlog+0xa4/0x160
 [<ffffffff8141b209>] net_rx_action+0x129/0x210
 [<ffffffff81048489>] __do_softirq+0x119/0x260
 [<ffffffff814f29bc>] call_softirq+0x1c/0x30
 <EOI> 
 [<ffffffff8100437d>] do_softirq+0x3d/0x80
 [<ffffffff81047e09>] local_bh_enable+0x99/0xa0
 [<ffffffff8145715b>] ip_finish_output+0x1bb/0x3b0
 [<ffffffff81458b10>] ip_output+0x90/0xa0
 [<ffffffff81458255>] ip_local_out+0x25/0x30
 [<ffffffff814585ab>] ip_queue_xmit+0x14b/0x3d0
 [<ffffffff81470430>] tcp_transmit_skb+0x410/0x8e0
 [<ffffffff81470a87>] tcp_write_xmit+0x187/0xb40
 [<ffffffff8147164e>] __tcp_push_pending_frames+0x2e/0xd0
 [<ffffffff8145fe93>] tcp_push+0x53/0xc0
 [<ffffffff81464d2b>] tcp_sendmsg+0x79b/0xc40
 [<ffffffff81105f8e>] ? find_get_page+0x1e/0xc0
 [<ffffffff8148bdc2>] inet_sendmsg+0x62/0xb0
 [<ffffffff814024df>] sock_aio_write+0x13f/0x160
 [<ffffffff8115de70>] do_sync_write+0x80/0xb0
 [<ffffffff8115e675>] vfs_write+0x1c5/0x1e0
 [<ffffffff8115ef59>] SyS_write+0x49/0xa0
 [<ffffffff814f1782>] system_call_fastpath+0x16/0x1b
Code: 48 8b 0a f2 48 0f 38 f1 c1 48 83 c2 08 48 39 d6 75 ee 49 8d 52 08 48 29 d6 48 83 e6 f8 4a 8d 54 16 08 49 39 d0 74 13 90 0f b6 0a <f2> 48 0f 38 f0 c1 48 83 c2 01 4c 39 c2 75 ee 48 83 c7 18 49 39 
RIP  [<ffffffffa012a9d3>] tfw_hash_str+0xc3/0x100 [tempesta_fw]
 RSP <ffff88003fc03a98>
---[ end trace fd887738b66c24f0 ]---
Kernel panic - not syncing: Fatal exception in interrup

[vladtcvs]

$ objdump -Dr tempesta_fw.ko | grep -A 100 '<tfw_hash_str>'

dump.txt

[krizhanovsky]

The code crashes at

        49d3:       f2 48 0f 38 f0 c1       crc32b %cl,%rax

So it seems the machine doesn't have SSE 4.2 extension. Please check, that

    grep -m 1 -c sse4_2 /proc/cpuinfo

prints 1.

Related to #241.

[krizhanovsky]

This is unsupported 5 years old processor AMD Athlon(tm) II X2 250. The earliest supported AMD processors are Bulldzers (http://www.cpu-world.com/Glossary/S/SSE4.2.html).