[adding netdev]
On 02/23/2018 08:05 AM, Khalid Aziz wrote:
> I am seeing a kernel panic with 4.16-rc1 and 4.16-rc2 kernels when running
> selftests
> from tools/testing/selftests. Last messages from selftest before kernel panic
> are:
>
> --------------------
> running psock_tpacket test
> --------------------
> test: TPACKET_V1 with PACKET_RX_RING test: skip TPACKET_V1 PACKET_RX_RING
> since user and kernel space have different bit width
> test: TPACKET_V1 with PACKET_TX_RING test: skip TPACKET_V1 PACKET_TX_RING
> since user and kernel space have different bit width
> test: TPACKET_V2 with PACKET_RX_RING .................... 100 pkts (14200
> bytes)
> test: TPACKET_V2 with PACKET_TX_RING .................... 100 pkts (14200
> bytes)
> test: TPACKET_V3 with PACKET_RX_RING .................... 100 pkts (14200
> bytes)
> test: TPACKET_V3 with PACKET_TX_RING .................... 100 pkts (14200
> bytes)
> OK. All tests passed
> [PASS]
> ok 1..7 selftests: run_afpackettests [PASS]
> selftests: test_bpf.sh
> ========================================
> test_bpf: [FAIL]
> not ok 1..8 selftests: test_bpf.sh [FAIL]
> selftests: netdevice.sh
> ========================================
> ok 1..9 selftests: netdevice.sh [PASS]
> selftests: rtnetlink.sh
> ========================================
> PASS: policy routing
> PASS: route get
>
>
> Kernel panic message is below:
>
> [ 572.486722] BUG: unable to handle kernel paging request at 0000000006000000
> [ 572.494498] IP: tcf_exts_dump_stats+0x10/0x30
> [ 572.499360] PGD 800000be413cb067 P4D 800000be413cb067 PUD bead15c067 PMD 0
> [ 572.507126] Oops: 0000 [#1] SMP PTI
> [ 572.511010] Modules linked in: cls_u32 sch_htb dummy vfat fat ext4 mbcache
> jb
> d2 intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul
> crc32_pclmul ghash_clmulni_intel pcbc aesni_intel crypto_simd glue_helper
> cryptd sg iTCO_wdt iTCO_vendor_support ioatdma ipmi_ssif pcspkr wmi i2c_i801
> lpc_ich shpchp mfd_core ipmi_si ipmi_devintf ipmi_msghandler nfsd auth_rpcgss
> nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c sd_mod mgag200
> drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm igb ahci
> crc32c_intel nvme libahci dca drm megaraid_sas nvme_core i2c_algo_bit libata
> bnxt_en i2c_core dm_mirror dm_region_hash dm_log dm_mod
> [ 572.574377] CPU: 81 PID: 17886 Comm: tc Not tainted 4.16.0-rc2 #112
> [ 572.581371] Hardware name: Oracle Corporation ORACLE SERVER X7-2/ASM, MB,
> X7-2, BIOS 41017600 10/06/2017
> [ 572.591957] RIP: 0010:tcf_exts_dump_stats+0x10/0x30
> [ 572.597402] RSP: 0018:ffffc900313b7928 EFLAGS: 00010206
> [ 572.603226] RAX: 0000000006000000 RBX: ffff88bea9117db0 RCX:
> 0000000000001ca4
> [ 572.611191] RDX: 0000000000001ca3 RSI: ffff88bea90cf018 RDI:
> ffff88be4fb6c000
> [ 572.619157] RBP: ffff88be4fb6c000 R08: 0000000000024800 R09:
> ffffffffa05697fb
> [ 572.627121] R10: ffff88bebe064800 R11: ffffea02faa445c0 R12:
> ffff88bea90ce034
> [ 572.635087] R13: ffff88bea90cf000 R14: ffff88be9fe33300 R15:
> ffff88bea90ce000
> [ 572.643053] FS: 00007f98ae464740(0000) GS:ffff88bebe040000(0000)
> knlGS:0000000000000000
> [ 572.652084] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 572.658497] CR2: 0000000006000000 CR3: 000000be41a94005 CR4:
> 00000000007606e0
> [ 572.666462] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [ 572.674428] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
> 0000000000000400
> [ 572.682393] PKRU: 55555554
> [ 572.685413] Call Trace:
> [ 572.688145] u32_dump+0x2be/0x3c0 [cls_u32]
> [ 572.692816] tcf_fill_node.isra.29+0x15b/0x1f0
> [ 572.697777] tfilter_notify+0xc1/0x150
> [ 572.701952] tc_ctl_tfilter+0x87d/0xbd0
> [ 572.706238] rtnetlink_rcv_msg+0x29c/0x310
> [ 572.710813] ? _cond_resched+0x15/0x30
> [ 572.714999] ? __kmalloc_node_track_caller+0x1b9/0x270
> [ 572.720737] ? rtnl_calcit.isra.28+0x100/0x100
> [ 572.725697] netlink_rcv_skb+0xd2/0x110
> [ 572.729969] netlink_unicast+0x17c/0x230
> [ 572.734348] netlink_sendmsg+0x2cd/0x3c0
> [ 572.738719] sock_sendmsg+0x30/0x40
> [ 572.742612] ___sys_sendmsg+0x27a/0x290
> [ 572.746896] ? do_wp_page+0x89/0x4c0
> [ 572.750886] ? page_add_new_anon_rmap+0x72/0xc0
> [ 572.755944] ? __handle_mm_fault+0x74b/0x1280
> [ 572.760807] __sys_sendmsg+0x51/0x90
> [ 572.764800] do_syscall_64+0x6e/0x1a0
> [ 572.768888] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
> [ 572.774526] RIP: 0033:0x7f98ada843b0
> [ 572.778515] RSP: 002b:00007fff833a4f38 EFLAGS: 00000246 ORIG_RAX:
> 000000000000002e
> [ 572.786963] RAX: ffffffffffffffda RBX: 000000005a8deb31 RCX:
> 00007f98ada843b0
> [ 572.794929] RDX: 0000000000000000 RSI: 00007fff833a4f80 RDI:
> 0000000000000003
> [ 572.802892] RBP: 00007fff833a4f80 R08: 0000000000000000 R09:
> 0000000000000001
> [ 572.810856] R10: 00007fff833a4320 R11: 0000000000000246 R12:
> 0000000000000000
> [ 572.818823] R13: 0000000000650ba0 R14: 00007fff833b11e8 R15:
> 0000000000000000
> [ 572.826779] Code: ff ff ff 31 c9 eb f4 0f 1f 40 00 e8 2b 0d a0 ff 90 66 2e
> 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 8b 46 04 85 c0 74 1c 48 8b 46 08 <48>
> 8b 30 48 85 f6 74 0e ba 01 00 00 00 e8 ae 40 00 00 c1 f8 1f [ 572.847854]
> RIP: tcf_exts_dump_stats+0x10/0x30 RSP: ffffc900313b7928
> [ 572.854936] CR2: 0000000006000000
> [ 572.858670] ---[ end trace 2c7ba9c84208074a ]---
> [ 572.867859] Kernel panic - not syncing: Fatal exception
> [ 572.873821] Kernel Offset: disabled
> [ 572.881602] ---[ end Kernel panic - not syncing: Fatal exception
>
> Same selftest does not cause panic on 4.15. git bisect pointed to commit
> 6ce711f2750031d12cec91384ac5cfa0a485b60a ("idr: Make 1-based IDRs more
> efficient").
> Kernel config is attached.
>
> --
> Khalid
--
~Randy
