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linux/tools/testing/selftests/tc-testing/tc-tests/actions/ife.json
Davide Caratti 11a94d7fd8 net/sched: act_ife: validate the control action inside init() 
the following script:

 # tc qdisc add dev crash0 clsact
 # tc filter add dev crash0 egress matchall \
 > action ife encode allow mark pass index 90
 # tc actions replace action ife \
 > encode allow mark goto chain 42 index 90 cookie c1a0c1a0
 # tc action show action ife

had the following output:

 IFE type 0xED3E
 IFE type 0xED3E
 Error: Failed to init TC action chain.
 We have an error talking to the kernel
 total acts 1

         action order 0: ife encode action goto chain 42 type 0XED3E
         allow mark
          index 90 ref 2 bind 1
         cookie c1a0c1a0

Then, the first packet transmitted by crash0 made the kernel crash:

 BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
 #PF error: [normal kernel read fault]
 PGD 800000007b4e7067 P4D 800000007b4e7067 PUD 7b4e6067 PMD 0
 Oops: 0000 [#1] SMP PTI
 CPU: 2 PID: 164 Comm: kworker/2:1 Not tainted 5.0.0-rc4.gotochain_crash+ #533
 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
 Workqueue: ipv6_addrconf addrconf_dad_work
 RIP: 0010:tcf_action_exec+0xb8/0x100
 Code: 00 00 00 20 74 1d 83 f8 03 75 09 49 83 c4 08 4d 39 ec 75 bc 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 49 8b 97 a8 00 00 00 <48> 8b 12 48 89 55 00 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3
 RSP: 0018:ffffa6a7c0553ad0 EFLAGS: 00010246
 RAX: 000000002000002a RBX: ffff9796ee1bbd00 RCX: 0000000000000001
 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
 RBP: ffffa6a7c0553b70 R08: 0000000000000000 R09: 0000000000000000
 R10: 0000000000000000 R11: ffff9797385bb038 R12: ffff9796ead9d700
 R13: ffff9796ead9d708 R14: 0000000000000001 R15: ffff9796ead9d800
 FS:  0000000000000000(0000) GS:ffff97973db00000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000000000000 CR3: 000000007c41e006 CR4: 00000000001606e0
 Call Trace:
  tcf_classify+0x58/0x120
  __dev_queue_xmit+0x40a/0x890
  ? ndisc_next_option+0x50/0x50
  ? ___neigh_create+0x4d5/0x680
  ? ip6_finish_output2+0x1b5/0x590
  ip6_finish_output2+0x1b5/0x590
  ? ip6_output+0x68/0x110
  ip6_output+0x68/0x110
  ? nf_hook.constprop.28+0x79/0xc0
  ndisc_send_skb+0x248/0x2e0
  ndisc_send_ns+0xf8/0x200
  ? addrconf_dad_work+0x389/0x4b0
  addrconf_dad_work+0x389/0x4b0
  ? __switch_to_asm+0x34/0x70
  ? process_one_work+0x195/0x380
  ? addrconf_dad_completed+0x370/0x370
  process_one_work+0x195/0x380
  worker_thread+0x30/0x390
  ? process_one_work+0x380/0x380
  kthread+0x113/0x130
  ? kthread_park+0x90/0x90
  ret_from_fork+0x35/0x40
 Modules linked in: act_gact act_meta_mark act_ife dummy veth ip6table_filter ip6_tables iptable_filter binfmt_misc snd_hda_codec_generic ext4 snd_hda_intel snd_hda_codec crct10dif_pclmul mbcache crc32_pclmul jbd2 snd_hwdep snd_hda_core ghash_clmulni_intel snd_seq snd_seq_device snd_pcm snd_timer aesni_intel crypto_simd snd cryptd glue_helper virtio_balloon joydev pcspkr soundcore i2c_piix4 nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs ata_generic pata_acpi qxl virtio_net drm_kms_helper virtio_blk net_failover syscopyarea failover sysfillrect virtio_console sysimgblt fb_sys_fops ttm drm crc32c_intel serio_raw ata_piix virtio_pci virtio_ring libata virtio floppy dm_mirror dm_region_hash dm_log dm_mod [last unloaded: act_ife]
 CR2: 0000000000000000

Validating the control action within tcf_ife_init() proved to fix the
above issue. A TDC selftest is added to verify the correct behavior.

Fixes: db50514f9a ("net: sched: add termination action to allow goto chain")
Fixes: 97763dc0f4 ("net_sched: reject unknown tcfa_action values")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-21 13:26:41 -07:00

1090 lines
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[
{
"id": "7682",
"name": "Create valid ife encode action with mark and pass control",
"category": [
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255
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255
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"id": "3056",
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"id": "7dd3",
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{
"id": "ce65",
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{
"id": "09cd",
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255
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{
"id": "8eb5",
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255
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{
"id": "451a",
"name": "Create valid ife encode action with tcindex and drop control",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode allow tcindex drop index 77",
"expExitCode": "0",
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"matchPattern": "action order [0-9]*: ife encode action drop.*type 0[xX]ED3E.*allow tcindex.*index 77",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "d76c",
"name": "Create valid ife encode action with tcindex and reclassify control",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
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],
"cmdUnderTest": "$TC actions add action ife encode allow tcindex reclassify index 77",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 77",
"matchPattern": "action order [0-9]*: ife encode action reclassify.*type 0[xX]ED3E.*allow tcindex.*index 77",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "e731",
"name": "Create valid ife encode action with tcindex and jump control",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode allow tcindex jump 999 index 77",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 77",
"matchPattern": "action order [0-9]*: ife encode action jump 999.*type 0[xX]ED3E.*allow tcindex.*index 77",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "b7b8",
"name": "Create valid ife encode action with tcindex value at 16-bit maximum",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode use tcindex 65535 pass index 1",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 1",
"matchPattern": "action order [0-9]*: ife encode action pass.*type 0[xX]ED3E.*use tcindex 65535.*index 1",
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"teardown": [
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{
"id": "d0d8",
"name": "Create ife encode action with tcindex value exceeding 16-bit maximum",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
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],
"cmdUnderTest": "$TC actions add action ife encode use tcindex 65539 pipe index 1",
"expExitCode": "255",
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"matchCount": "0",
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{
"id": "2a9c",
"name": "Create valid ife encode action with mac src parameter",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode allow mark src 00:11:22:33:44:55 pipe index 1",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 1",
"matchPattern": "action order [0-9]*: ife encode action pipe.*type 0[xX]ED3E.*allow mark src 00:11:22:33:44:55.*index 1",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "cf5c",
"name": "Create valid ife encode action with mac dst parameter",
"category": [
"actions",
"ife"
],
"setup": [
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0,
1,
255
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],
"cmdUnderTest": "$TC actions add action ife encode use prio 9876 dst 00:11:22:33:44:55 reclassify index 1",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 1",
"matchPattern": "action order [0-9]*: ife encode action reclassify.*type 0[xX]ED3E.*use prio 9876 dst 00:11:22:33:44:55.*index 1",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "2353",
"name": "Create valid ife encode action with mac src and mac dst parameters",
"category": [
"actions",
"ife"
],
"setup": [
[
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0,
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],
"cmdUnderTest": "$TC actions add action ife encode allow tcindex src 00:aa:bb:cc:dd:ee dst 00:11:22:33:44:55 pass index 11",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 11",
"matchPattern": "action order [0-9]*: ife encode action pass.*type 0[xX]ED3E.*allow tcindex dst 00:11:22:33:44:55 src 00:aa:bb:cc:dd:ee .*index 11",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "552c",
"name": "Create valid ife encode action with mark and type parameters",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
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],
"cmdUnderTest": "$TC actions add action ife encode use mark 7 type 0xfefe pass index 1",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 1",
"matchPattern": "action order [0-9]*: ife encode action pass.*type 0[xX]FEFE.*use mark 7.*index 1",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "0421",
"name": "Create valid ife encode action with prio and type parameters",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode use prio 444 type 0xabba pipe index 21",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 21",
"matchPattern": "action order [0-9]*: ife encode action pipe.*type 0[xX]ABBA.*use prio 444.*index 21",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "4017",
"name": "Create valid ife encode action with tcindex and type parameters",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode use tcindex 5000 type 0xabcd reclassify index 21",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 21",
"matchPattern": "action order [0-9]*: ife encode action reclassify.*type 0[xX]ABCD.*use tcindex 5000.*index 21",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "fac3",
"name": "Create valid ife encode action with index at 32-bit maximum",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode allow mark pass index 4294967295",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 4294967295",
"matchPattern": "action order [0-9]*: ife encode action pass.*type 0[xX]ED3E.*allow mark.*index 4294967295",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "7c25",
"name": "Create valid ife decode action with pass control",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife decode pass index 1",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 1",
"matchPattern": "action order [0-9]*: ife decode action pass.*type 0(x0)?.*allow mark allow tcindex allow prio.*index 1",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "dccb",
"name": "Create valid ife decode action with pipe control",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife decode pipe index 1",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 1",
"matchPattern": "action order [0-9]*: ife decode action pipe.*type 0(x0)?.*allow mark allow tcindex allow prio.*index 1",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "7bb9",
"name": "Create valid ife decode action with continue control",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife decode continue index 1",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 1",
"matchPattern": "action order [0-9]*: ife decode action continue.*type 0(x0)?.*allow mark allow tcindex allow prio.*index 1",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "d9ad",
"name": "Create valid ife decode action with drop control",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife decode drop index 1",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 1",
"matchPattern": "action order [0-9]*: ife decode action drop.*type 0(x0)?.*allow mark allow tcindex allow prio.*index 1",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "219f",
"name": "Create valid ife decode action with reclassify control",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife decode reclassify index 1",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 1",
"matchPattern": "action order [0-9]*: ife decode action reclassify.*type 0(x0)?.*allow mark allow tcindex allow prio.*index 1",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "8f44",
"name": "Create valid ife decode action with jump control",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife decode jump 10 index 1",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 1",
"matchPattern": "action order [0-9]*: ife decode action jump 10.*type 0(x0)?.*allow mark allow tcindex allow prio.*index 1",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "56cf",
"name": "Create ife encode action with index exceeding 32-bit maximum",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode allow mark pass index 4294967295999",
"expExitCode": "255",
"verifyCmd": "$TC actions get action ife index 4294967295999",
"matchPattern": "action order [0-9]*: ife encode action pass.*type 0[xX]ED3E.*allow mark.*index 4294967295999",
"matchCount": "0",
"teardown": []
},
{
"id": "ee94",
"name": "Create ife encode action with invalid control",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode allow mark kuka index 4",
"expExitCode": "255",
"verifyCmd": "$TC actions get action ife index 4",
"matchPattern": "action order [0-9]*: ife encode action kuka.*type 0[xX]ED3E.*allow mark.*index 4",
"matchCount": "0",
"teardown": []
},
{
"id": "b330",
"name": "Create ife encode action with cookie",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode allow prio pipe index 4 cookie aabbccddeeff112233445566778800a1",
"expExitCode": "0",
"verifyCmd": "$TC actions get action ife index 4",
"matchPattern": "action order [0-9]*: ife encode action pipe.*type 0[xX]ED3E.*allow prio.*index 4.*cookie aabbccddeeff112233445566778800a1",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
},
{
"id": "bbc0",
"name": "Create ife encode action with invalid argument",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode allow foo pipe index 4",
"expExitCode": "255",
"verifyCmd": "$TC actions get action ife index 4",
"matchPattern": "action order [0-9]*: ife encode action pipe.*type 0[xX]ED3E.*allow foo.*index 4",
"matchCount": "0",
"teardown": []
},
{
"id": "d54a",
"name": "Create ife encode action with invalid type argument",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode allow prio type 70000 pipe index 4",
"expExitCode": "255",
"verifyCmd": "$TC actions get action ife index 4",
"matchPattern": "action order [0-9]*: ife encode action pipe.*type 0[xX]11170.*allow prio.*index 4",
"matchCount": "0",
"teardown": []
},
{
"id": "7ee0",
"name": "Create ife encode action with invalid mac src argument",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode allow prio src 00:11:22:33:44:pp pipe index 4",
"expExitCode": "255",
"verifyCmd": "$TC actions get action ife index 4",
"matchPattern": "action order [0-9]*: ife encode action pipe.*allow prio.*index 4",
"matchCount": "0",
"teardown": []
},
{
"id": "0a7d",
"name": "Create ife encode action with invalid mac dst argument",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
]
],
"cmdUnderTest": "$TC actions add action ife encode allow prio dst 00.111-22:33:44:aa pipe index 4",
"expExitCode": "255",
"verifyCmd": "$TC actions get action ife index 4",
"matchPattern": "action order [0-9]*: ife encode action pipe.*allow prio.*index 4",
"matchCount": "0",
"teardown": []
},
{
"id": "a0e2",
"name": "Replace ife encode action with invalid goto chain control",
"category": [
"actions",
"ife"
],
"setup": [
[
"$TC actions flush action ife",
0,
1,
255
],
"$TC actions add action ife encode allow mark pass index 90"
],
"cmdUnderTest": "$TC actions replace action ife encode allow mark goto chain 42 index 90 cookie c1a0c1a0",
"expExitCode": "255",
"verifyCmd": "$TC actions get action ife index 90",
"matchPattern": "action order [0-9]*: ife encode action pass.*type 0[xX]ED3E .*allow mark.*index 90 ref",
"matchCount": "1",
"teardown": [
"$TC actions flush action ife"
]
}
]
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