Default Comment by Bridge ** Attachment added: "net" https://bugs.launchpad.net/bugs/1654073/+attachment/4842650/+files/net
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1654073 Title: Ubuntu 17.04: machine crashes with Oops in dccp_v4_ctl_send_reset while running stress-ng. Status in linux package in Ubuntu: Fix Committed Status in linux source package in Zesty: Fix Committed Bug description: == 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? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1654073/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
