* Kernel panic is seen while running iozone over multiple ports and toggling the link on TOT kernel
@ 2020-09-28 17:58 Dakshaja Uppalapati
2020-09-29 8:05 ` Sagi Grimberg
0 siblings, 1 reply; 2+ messages in thread
From: Dakshaja Uppalapati @ 2020-09-28 17:58 UTC (permalink / raw)
To: linux-nvme, kbusch, Sagi Grimberg; +Cc: Potnuri Bharat Teja
[-- Attachment #1: Type: text/plain, Size: 2727 bytes --]
Hi all,
I observed the following trace with TOT linux kernel while running NVMF over multiple ports and toggling the link/interface. Issue is observed very intermittently.
Attached is the target configuration on actual disks.
On host, started iozone then toggling the multiport interface1 for 5 seconds and interface2 for 8 seconds one after the other in a loop
Observed the below kernel panic after couple of hours.
[142799.524961] BUG: kernel NULL pointer dereference, address: 0000000000000198
[142799.524965] #PF: supervisor write access in kernel mode
[142799.524966] #PF: error_code(0x0002) - not-present page
[142799.524967] PGD 0 P4D 0
[142799.524970] Oops: 0002 [#1] SMP PTI
[142799.524973] CPU: 1 PID: 16 Comm: ksoftirqd/1 Kdump: loaded Tainted: G S W 5.9.0-rc6 #1
[142799.524974] Hardware name: Supermicro X10SRA-F/X10SRA-F, BIOS 2.0 01/28/2016
[142799.524980] RIP: 0010:blk_mq_free_request+0x80/0x110
[142799.524982] Code: 00 00 00 00 8b 53 18 b8 01 00 00 00 84 d2 74 0b 31 c0 81 e2 00 08 06 00 0f 95 c0 48 83 84 c5 80 00 00 00 01 f6 43 1c 40 74 08 <f0> 41 ff 8d 98 01 00 00 8b 05 5a 4a c4 01 85 c0 75 5e 49 8b 7c 24
[142799.524983] RSP: 0018:ffffbb96c0123dc0 EFLAGS: 00010202
[142799.524984] RAX: 0000000000000000 RBX: ffff9e6b70f60280 RCX: 0000000000000018
[142799.524986] RDX: 0000000000000000 RSI: 000000000000000a RDI: ffff9e6b70f60280
[142799.524987] RBP: ffffdb96be8fd400 R08: 0000000000000000 R09: 0000000000000000
[142799.524988] R10: 00513cf381a1baf1 R11: 0000000000000000 R12: ffff9e6b590f7698
[142799.524989] R13: 0000000000000000 R14: 0000000000000004 R15: ffffffff948050c0
[142799.524990] FS: 0000000000000000(0000) GS:ffff9e6befc40000(0000) knlGS:0000000000000000
[142799.524992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[142799.524993] CR2: 0000000000000198 CR3: 00000001d6a0a001 CR4: 00000000003706e0
[142799.524994] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[142799.524995] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[142799.524995] Call Trace:
[142799.525006] nvme_keep_alive_end_io+0x15/0x70 [nvme_core]
[142799.525011] nvme_rdma_complete_rq+0x68/0xc0 [nvme_rdma]
[142799.525014] ? set_next_entity+0xae/0x1f0
[142799.525016] blk_done_softirq+0x95/0xc0
[142799.525021] __do_softirq+0xde/0x2ec
[142799.525025] ? sort_range+0x20/0x20
[142799.525029] run_ksoftirqd+0x1a/0x20
[142799.525031] smpboot_thread_fn+0xc5/0x160
[142799.525034] kthread+0x116/0x130
[142799.525036] ? kthread_park+0x80/0x80
[142799.525040] ret_from_fork+0x22/0x30
Keepalive request structure is freed and is accessed by nvme_keep_alive_end_io. looks like a probable race to me.
Thanks,
Dakshaja
[-- Attachment #2: target_config_128 --]
[-- Type: application/octet-stream, Size: 78311 bytes --]
{
"hosts": [],
"ports": [
{
"addr": {
"adrfam": "ipv4",
"traddr": "102.2.2.146",
"treq": "not specified",
"trsvcid": "4420",
"trtype": "rdma"
},
"portid": 2,
"referrals": [],
"subsystems": [
"nvme-ram128",
"nvme-ram127",
"nvme-ram126",
"nvme-ram125",
"nvme-ram124",
"nvme-ram123",
"nvme-ram122",
"nvme-ram121",
"nvme-ram120",
"nvme-ram119",
"nvme-ram118",
"nvme-ram117",
"nvme-ram116",
"nvme-ram115",
"nvme-ram114",
"nvme-ram113",
"nvme-ram112",
"nvme-ram111",
"nvme-ram110",
"nvme-ram109",
"nvme-ram108",
"nvme-ram107",
"nvme-ram106",
"nvme-ram105",
"nvme-ram104",
"nvme-ram103",
"nvme-ram102",
"nvme-ram101",
"nvme-ram100",
"nvme-ram99",
"nvme-ram98",
"nvme-ram97",
"nvme-ram96",
"nvme-ram95",
"nvme-ram94",
"nvme-ram93",
"nvme-ram92",
"nvme-ram91",
"nvme-ram90",
"nvme-ram89",
"nvme-ram88",
"nvme-ram87",
"nvme-ram86",
"nvme-ram85",
"nvme-ram84",
"nvme-ram83",
"nvme-ram82",
"nvme-ram81",
"nvme-ram80",
"nvme-ram79",
"nvme-ram78",
"nvme-ram77",
"nvme-ram76",
"nvme-ram75",
"nvme-ram74",
"nvme-ram73",
"nvme-ram72",
"nvme-ram71",
"nvme-ram70",
"nvme-ram69",
"nvme-ram68",
"nvme-ram67",
"nvme-ram66",
"nvme-ram65"
]
},
{
"addr": {
"adrfam": "ipv4",
"traddr": "102.1.1.146",
"treq": "not specified",
"trsvcid": "4420",
"trtype": "rdma"
},
"portid": 1,
"referrals": [],
"subsystems": [
"nvme-ram64",
"nvme-ram63",
"nvme-ram62",
"nvme-ram61",
"nvme-ram60",
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"nvme-ram57",
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"nvme-ram55",
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"nvme-ram53",
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"nvme-ram51",
"nvme-ram50",
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"nvme-ram44",
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"nvme-ram42",
"nvme-ram41",
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"nvme-ram38",
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"nvme-ram29",
"nvme-ram28",
"nvme-ram27",
"nvme-ram26",
"nvme-ram25",
"nvme-ram24",
"nvme-ram23",
"nvme-ram22",
"nvme-ram21",
"nvme-ram20",
"nvme-ram19",
"nvme-ram18",
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"nvme-ram16",
"nvme-ram15",
"nvme-ram14",
"nvme-ram13",
"nvme-ram12",
"nvme-ram11",
"nvme-ram10",
"nvme-ram9",
"nvme-ram8",
"nvme-ram7",
"nvme-ram6",
"nvme-ram5",
"nvme-ram4",
"nvme-ram3",
"nvme-ram2",
"nvme-ram1"
]
}
],
"subsystems": [
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "6be47939fca6d912",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol128",
"uuid": "af2dc4c0-04ed-4e2b-afdc-23828adebf4d"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram128"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "d6c1a7825f06603c",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol127",
"uuid": "b36b55bc-96d7-4353-b0d4-6de23ad63b61"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram127"
},
{
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"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "82d0373fb459a6ea",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol126",
"uuid": "6d4c9a78-243f-4147-99ec-85be00e7d5b9"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram126"
},
{
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"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "d934e90dfc4648e2",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol125",
"uuid": "d99bfdb8-2295-40de-ab99-c30cca84b33b"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram125"
},
{
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"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol124",
"uuid": "b14f4d84-7b93-4646-b3af-cb11bc5c2e58"
},
"enable": 1,
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}
],
"nqn": "nvme-ram124"
},
{
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},
"namespaces": [
{
"device": {
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"path": "/dev/vgiser/vol123",
"uuid": "93bc1f6c-15e7-4296-b8c6-b52fb338c09b"
},
"enable": 1,
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],
"nqn": "nvme-ram123"
},
{
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"attr": {
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"model": "Linux",
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"serial": "1b9a41dc1d68e389",
"version": "1.3"
},
"namespaces": [
{
"device": {
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"path": "/dev/vgiser/vol122",
"uuid": "780af050-acc0-4102-a021-d9ce0fa720a0"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram122"
},
{
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"attr": {
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"cntlid_max": "65519",
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"model": "Linux",
"pi_enable": "0",
"serial": "47a3bfd6daa8cc83",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol121",
"uuid": "aa0a503f-e4ee-4415-a5c1-7a21d2bc18c3"
},
"enable": 1,
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}
],
"nqn": "nvme-ram121"
},
{
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"attr": {
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"model": "Linux",
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"serial": "72b2a1c07001585a",
"version": "1.3"
},
"namespaces": [
{
"device": {
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"path": "/dev/vgiser/vol120",
"uuid": "f65b32cf-2124-4638-afbe-4ce4def8fbc6"
},
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}
],
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},
{
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"model": "Linux",
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},
"namespaces": [
{
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"path": "/dev/vgiser/vol119",
"uuid": "9bcb9f11-684a-4b0f-a576-edea547d92a0"
},
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}
],
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},
{
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"serial": "ae882e0976005f86",
"version": "1.3"
},
"namespaces": [
{
"device": {
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"path": "/dev/vgiser/vol118",
"uuid": "67097bc5-43b8-4869-8049-d3c5b1c411c2"
},
"enable": 1,
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}
],
"nqn": "nvme-ram118"
},
{
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"attr": {
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"cntlid_max": "65519",
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"model": "Linux",
"pi_enable": "0",
"serial": "2a85b6c4560f9fe8",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol117",
"uuid": "384ea1f3-dddd-4930-a510-6aa14394229e"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram117"
},
{
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"attr": {
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"cntlid_max": "65519",
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"model": "Linux",
"pi_enable": "0",
"serial": "e79851c1568593a6",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol116",
"uuid": "7706799f-6fca-4e54-8141-b83328d1b0ea"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram116"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "bf468dc28610fd89",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol115",
"uuid": "99618a7c-6ff3-4d39-a083-c9c6b7a83730"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram115"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "c1d0f15451058720",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol114",
"uuid": "0d929e08-fb87-4387-b792-c447aa7844e4"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram114"
},
{
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"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "f2e8e448362c27ea",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol113",
"uuid": "c723ae77-7711-493c-9746-24ec4c70520c"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram113"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "e4cd9259036d63cf",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol112",
"uuid": "7181bcac-5ffb-46c6-9acb-1df314aaab9c"
},
"enable": 1,
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}
],
"nqn": "nvme-ram112"
},
{
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"attr": {
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"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "fdc50d4506a285b1",
"version": "1.3"
},
"namespaces": [
{
"device": {
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"path": "/dev/vgiser/vol111",
"uuid": "e5c108fb-8125-4115-8692-78a3438db10f"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram111"
},
{
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"attr": {
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"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "e9b0444a3a65bfca",
"version": "1.3"
},
"namespaces": [
{
"device": {
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"path": "/dev/vgiser/vol110",
"uuid": "3da5ff90-e8f9-48ec-9357-c95fc8bc652b"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram110"
},
{
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"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "6d6f6ccf079ba36a",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol109",
"uuid": "67fcf8a3-2cf3-4626-b98b-328c0be27f41"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram109"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "5d47b9cac3524aa",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol108",
"uuid": "1e084c0a-c3c6-4cc3-a3ff-03cb33403f7f"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram108"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "418f98376c841076",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol107",
"uuid": "7ad38783-bc00-4bbd-ac91-7e5fa83eb1ec"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram107"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "55f2dc64181b9b4d",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol106",
"uuid": "f13cc28e-e991-445c-9565-7d5d7acbac53"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram106"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "1c077196285b664e",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol105",
"uuid": "1e8ca139-975e-4403-92d6-b5b27a5acff6"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram105"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "6ab5e12567f13b5a",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol104",
"uuid": "0709544e-33ed-491c-8e25-8a92ec77560f"
},
"enable": 1,
"nsid": 1
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"serial": "456c6f41c73c3092",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol29",
"uuid": "24cf36b3-c179-4a22-8dd9-d8bcb82c8e9b"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram29"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "9897bf2b8ab93427",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol28",
"uuid": "9e40d81c-fff7-42da-8e1b-4fa3c1b046e9"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram28"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "cd267024b557c8d8",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol27",
"uuid": "83b17801-a99f-4d5e-b91a-a6eb74336f30"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram27"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "9959e8faba522e5e",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol26",
"uuid": "56609da0-a1ad-4f75-9b7e-36a2fc8cbd2f"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram26"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "c9f29999f400705e",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol25",
"uuid": "20b35bfd-9474-4afe-9e33-e5aa909b8f66"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram25"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "e565997b3c5120da",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol24",
"uuid": "5d929b6d-7e5b-42b2-9982-7e733b9f3912"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram24"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "f91732793d1ede4b",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol23",
"uuid": "1af9ba79-4d91-4c9a-9306-0510532689d8"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram23"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "5cba6566a34f148c",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol22",
"uuid": "789163e0-d4f8-4a40-b0b4-8af50b7b03e2"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram22"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "7afd6337a1ab2ef5",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol21",
"uuid": "7fe92823-6b5d-4662-826c-ee6a94202dd9"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram21"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "87146f04bffa9916",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol20",
"uuid": "586270d1-b0fb-4ae3-869b-aa81526ea824"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram20"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "417a0cc4875e2374",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol19",
"uuid": "89894744-f309-4f99-a5c5-1eff54fe8f09"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram19"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "b63d84e20f155c92",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol18",
"uuid": "1632d025-8bd3-41e8-8ca6-3a9329f6cf87"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram18"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "ce1ac2ec04b47390",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol17",
"uuid": "647e28f2-afbe-41f6-a69e-cd61f8e49011"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram17"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "3a23e8113bed423d",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol16",
"uuid": "9811c6c8-fbd8-4489-ab11-cb25da1d0bf5"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram16"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "93ea941a56124f01",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol15",
"uuid": "3b680292-be74-4eb7-8006-553cbd6e1ba5"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram15"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "6734594b0b8b18fd",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol14",
"uuid": "66ebabc1-c108-4f8d-94ae-3835010dd998"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram14"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "b0a04804baf64d88",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol13",
"uuid": "e2194858-af92-424c-8362-4f3d92781396"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram13"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "c5e82ec93a6244df",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol12",
"uuid": "01bf072d-66fc-42d1-abdc-873db4a283a3"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram12"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "aa52c4f6263d3e99",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol11",
"uuid": "51746c3f-5dce-48f0-9ec5-702f6f067b58"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram11"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "51dbbce1b4b48dc2",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol10",
"uuid": "2f15ad6b-480b-41e3-9ced-44eb39b5d68c"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram10"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "9bb74efdca6bf2b8",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol9",
"uuid": "1897628d-0980-4f6c-b78c-065b13c16558"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram9"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "d59ca8f39da9290d",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol8",
"uuid": "3656ef1b-bc3f-4462-b396-9a51f65c5470"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram8"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "f94816b994a51489",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol7",
"uuid": "a2502fe7-7e59-41c4-8785-13d356d111f7"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram7"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "f4f1718a790c3c30",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol6",
"uuid": "80169770-aeac-4d95-b142-c0037c65cb4d"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram6"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "eb152b1fc3e8f9f3",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol5",
"uuid": "c0cfb12a-e0cc-4713-acea-4b10db58d156"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram5"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "ffd321627b80cee8",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol4",
"uuid": "f5e2085f-67da-4912-82e1-a96b80a3fe5c"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram4"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "dc2cb57d8475b57a",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol3",
"uuid": "b88409e0-8b80-417f-87fa-b39fb2a6be3c"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram3"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "574057e3d365fc89",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol2",
"uuid": "cda77d66-86e8-4849-8f02-c9afa41a17e2"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram2"
},
{
"allowed_hosts": [],
"attr": {
"allow_any_host": "1",
"cntlid_max": "65519",
"cntlid_min": "1",
"model": "Linux",
"pi_enable": "0",
"serial": "e6a9aca1d40e78ff",
"version": "1.3"
},
"namespaces": [
{
"device": {
"nguid": "00000000-0000-0000-0000-000000000000",
"path": "/dev/vgiser/vol1",
"uuid": "bb2cabc7-436e-4e22-802a-500dd835ba9d"
},
"enable": 1,
"nsid": 1
}
],
"nqn": "nvme-ram1"
}
]
}
[-- Attachment #3: Type: text/plain, Size: 158 bytes --]
_______________________________________________
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Kernel panic is seen while running iozone over multiple ports and toggling the link on TOT kernel
2020-09-28 17:58 Kernel panic is seen while running iozone over multiple ports and toggling the link on TOT kernel Dakshaja Uppalapati
@ 2020-09-29 8:05 ` Sagi Grimberg
0 siblings, 0 replies; 2+ messages in thread
From: Sagi Grimberg @ 2020-09-29 8:05 UTC (permalink / raw)
To: Dakshaja Uppalapati, linux-nvme, kbusch; +Cc: Potnuri Bharat Teja
> Hi all,
> I observed the following trace with TOT linux kernel while running NVMF over multiple ports and toggling the link/interface. Issue is observed very intermittently.
What is TOT linux kernel?
> Attached is the target configuration on actual disks.
>
> On host, started iozone then toggling the multiport interface1 for 5 seconds and interface2 for 8 seconds one after the other in a loop
> Observed the below kernel panic after couple of hours.
>
> [142799.524961] BUG: kernel NULL pointer dereference, address: 0000000000000198
> [142799.524965] #PF: supervisor write access in kernel mode
> [142799.524966] #PF: error_code(0x0002) - not-present page
> [142799.524967] PGD 0 P4D 0
> [142799.524970] Oops: 0002 [#1] SMP PTI
> [142799.524973] CPU: 1 PID: 16 Comm: ksoftirqd/1 Kdump: loaded Tainted: G S W 5.9.0-rc6 #1
> [142799.524974] Hardware name: Supermicro X10SRA-F/X10SRA-F, BIOS 2.0 01/28/2016
> [142799.524980] RIP: 0010:blk_mq_free_request+0x80/0x110
> [142799.524982] Code: 00 00 00 00 8b 53 18 b8 01 00 00 00 84 d2 74 0b 31 c0 81 e2 00 08 06 00 0f 95 c0 48 83 84 c5 80 00 00 00 01 f6 43 1c 40 74 08 <f0> 41 ff 8d 98 01 00 00 8b 05 5a 4a c4 01 85 c0 75 5e 49 8b 7c 24
> [142799.524983] RSP: 0018:ffffbb96c0123dc0 EFLAGS: 00010202
> [142799.524984] RAX: 0000000000000000 RBX: ffff9e6b70f60280 RCX: 0000000000000018
> [142799.524986] RDX: 0000000000000000 RSI: 000000000000000a RDI: ffff9e6b70f60280
> [142799.524987] RBP: ffffdb96be8fd400 R08: 0000000000000000 R09: 0000000000000000
> [142799.524988] R10: 00513cf381a1baf1 R11: 0000000000000000 R12: ffff9e6b590f7698
> [142799.524989] R13: 0000000000000000 R14: 0000000000000004 R15: ffffffff948050c0
> [142799.524990] FS: 0000000000000000(0000) GS:ffff9e6befc40000(0000) knlGS:0000000000000000
> [142799.524992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [142799.524993] CR2: 0000000000000198 CR3: 00000001d6a0a001 CR4: 00000000003706e0
> [142799.524994] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [142799.524995] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> [142799.524995] Call Trace:
> [142799.525006] nvme_keep_alive_end_io+0x15/0x70 [nvme_core]
> [142799.525011] nvme_rdma_complete_rq+0x68/0xc0 [nvme_rdma]
> [142799.525014] ? set_next_entity+0xae/0x1f0
> [142799.525016] blk_done_softirq+0x95/0xc0
> [142799.525021] __do_softirq+0xde/0x2ec
> [142799.525025] ? sort_range+0x20/0x20
> [142799.525029] run_ksoftirqd+0x1a/0x20
> [142799.525031] smpboot_thread_fn+0xc5/0x160
> [142799.525034] kthread+0x116/0x130
> [142799.525036] ? kthread_park+0x80/0x80
> [142799.525040] ret_from_fork+0x22/0x30
>
> Keepalive request structure is freed and is accessed by nvme_keep_alive_end_io. looks like a probable race to me.
>
> Thanks,
> Dakshaja
>
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^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2020-09-29 8:06 UTC | newest]
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2020-09-28 17:58 Kernel panic is seen while running iozone over multiple ports and toggling the link on TOT kernel Dakshaja Uppalapati
2020-09-29 8:05 ` Sagi Grimberg
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