Public bug reported:
== Comment: #0 - PAVITHRA R. PRAKASH - 2016-12-28 03:39:50 ==
---Problem Description---
Ubuntu 17.04: machine crashes with Oops while running stress-ng.
---Steps followed-----
1. Install 17.04 on NV machine.
2. apt-get install stress-ng
3. stress-ng -a 0
Logs
====
dccp af_alg joydev input_leds mac_hid at24 nvmem_core ofpart cmdlinepart
powernv_flash mtd opal_prd powernv_rng ipmi_powernv ipmi_msghandler ibmpowernv
uio_pdrv_genirq uio vmx_crypto ib_iser rdma_cm iw_cm ib_cm ib_core configfs
iscsi_tcp libiscsi_tcp libiscsi scsi_tran[165938083361,3] OPAL: Trying a CPU
re-init with flags: 0x1
[166456504189,3] OPAL: CPU 0x29 not in OPAL !
[167510150475,3] OPAL: Trying a CPU re-init with flags: 0x2
[168022446397,3] OPAL: CPU 0x29 not in OPAL !
sport_iscsi ip_tables x_tables autofs4 btrfs raid10 raid456 async_raid6_recov
async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath
linear ses enclosure scsi_transport_sas hid_generic ast i2c_algo_bit ttm
drm_kms_helper syscopyarea sysfillrect sysimgblt bnx2x fb_sys_fops drm aacraid
tg3 usbhid uas hid usb_storage mdio ahci libcrc32c libahci crc32c_vpmsum
[ 237.047216] CPU: 33 PID: 34694 Comm: stress-ng-dccp Not tainted
4.9.0-11-generic #12-Ubuntu
[ 237.047315] task: c000003312a69400 task.stack: c000003779698000
[ 237.047402] NIP: d00000002e7b0a7c LR: d00000002e7b21cc CTR: c000000000a0dd00
[ 237.047509] REGS: c000003fff68f670 TRAP: 0300 Not tainted
(4.9.0-11-generic)
[ 237.047613] MSR: 900000010280b033
<SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE,TM[E]>[ 237.049028] CR: 24002282 XER:
20000000
[ 237.049103] CFAR: c000000000008a60 DAR: 00000000000002f4 DSISR: 40000000
SOFTE: 1
GPR00: d00000002e7b21cc c000003fff68f8f0 d00000002e7bb670 0000000000000001
GPR04: c000002b5dbdc400 c000003c74c0a460 0000000000000474 c000003c74c0a474
GPR08: c000003c74c0a000 0000000000000000 c00000348cd25200 0000000000000000
GPR12: 0000000000002200 c000000007b72900 c000003fff68c000 0000000000000000
GPR16: 0000000000000000 0000000000000040 0000000000000001 0000000000002713
GPR20: 000000000000cc84 000000000100007f 000000000100007f c0000000013b2f00
GPR24: 0000000000000001 0000000000000001 0000000000000000 0000000000000004
GPR28: c0000000013b2f00 c000003c74c0a474 0000000000000000 c000002b5dbdc400
NIP [d00000002e7b0a7c] dccp_v4_ctl_send_reset+0xa4/0x2f0 [dccp_ipv4]
[ 237.051403] LR [d00000002e7b21cc] dccp_v4_rcv+0x5d4/0x850 [dccp_ipv4]
[ 237.051486] Call Trace:
[ 237.051529] [c000003fff68f8f0] [000000002713cc84] 0x2713cc84 (unreliable)
[ 237.051649] [c000003fff68f970] [d00000002e7b21cc] dccp_v4_rcv+0x5d4/0x850
[dccp_ipv4]
[ 237.051779] [c000003fff68fa50] [c000000000a01e40]
ip_local_deliver_finish+0x170/0x350
[ 237.051932] [c000003fff68faa0] [c000000000a0276c] ip_local_deliver+0x5c/0x130
[ 237.052038] [c000003fff68fb10] [c000000000a02278] ip_rcv_finish+0x258/0x510
[ 237.052151] [c000003fff68fba0] [c000000000a02b44] ip_rcv+0x304/0x420
[ 237.052263] [c000003fff68fc30] [c0000000009a28bc]
__netif_receive_skb_core+0x97c/0xda0
[ 237.052388] [c000003fff68fd10] [c0000000009a7ab4] process_backlog+0xd4/0x1e0
[ 237.052489] [c000003fff68fd80] [c0000000009a6f0c] net_rx_action+0x35c/0x480
[ 237.052603] [c000003fff68fe90] [c000000000b22a6c] __do_softirq+0x18c/0x3fc
[ 237.052726] [c000003fff68ff90] [c000000000029fb0] call_do_softirq+0x14/0x24
[ 237.052848] [c00000377969b920] [c00000000001765c]
do_softirq_own_stack+0x5c/0xa0
[ 237.052992] [c00000377969b960] [c0000000000cfd48] do_softirq.part.3+0x68/0x90
[ 237.053112] [c00000377969b990] [c0000000000cfe44]
__local_bh_enable_ip+0xd4/0x100
[ 237.053240] [c00000377969b9b0] [c000000000a06724]
ip_finish_output2+0x244/0x460
[ 237.053372] [c00000377969ba50] [c000000000a0977c] ip_output+0xcc/0x180
[ 237.053485] [c00000377969bae0] [c000000000a08c78] ip_local_out+0x68/0x90
[ 237.053607] [c00000377969bb20] [d000000021966978]
dccp_transmit_skb+0x320/0x550 [dccp]
[ 237.053739] [c00000377969bb90] [d00000002196732c] dccp_connect+0xf4/0x1f0
[dccp]
[ 237.053890] [c00000377969bc10] [d00000002e7b0320]
dccp_v4_connect+0x308/0x400 [dccp_ipv4]
[ 237.054213] [c00000377969bc90] [c000000000a51678]
__inet_stream_connect+0x158/0x400
[ 237.065276] [c00000377969bd20] [c000000000a51978]
inet_stream_connect+0x58/0x90
[ 237.074757] [c00000377969bd60] [c00000000097eeac] SyS_connect+0x10c/0x130
[ 237.092889] [c00000377969be30] [c00000000000bd84] system_call+0x38/0xe0
[ 237.107020] Instruction dump:
[ 237.107085] 7ca82a14 f9210020 f9210028 ebdc0b98 f9210030 f9210038 f9210040
f9210048
[ 237.117663] 419e01c4 e86a00ae 2fa30000 419e01b8 <893e02f4> e95e0060 7c9f2378
897e0149
[ 237.133181] ---[ end trace ef25e246c86e0bcc ]---
[ 237.133270]
[ 237.146244] Sending IPI to other CPUs
[ 237.147330] IPI complete
== Comment: #8 - Kevin W. Rudd - 2017-01-03 15:16:06 ==
The panic happened because the control socks had been cleared:
dccp = {
v4_ctl_sk = 0x0,
v6_ctl_sk = 0x0
},
dccp_v4_ctl_send_reset() ended up calling dccp_v4_route_skb() with a
NULL ctl_sk. Close race of some sort?
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Taco Screen team (taco-screen-team)
Status: New
** Tags: architecture-ppc64le bugnameltc-150129 severity-high
targetmilestone-inin---
** Tags added: architecture-ppc64le bugnameltc-150129 severity-high
targetmilestone-inin---
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https://bugs.launchpad.net/bugs/1654073
Title:
Ubuntu 17.04: machine crashes with Oops in dccp_v4_ctl_send_reset
while running stress-ng.
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