On Wed, 19 Jul 2017, Johnny Hughes wrote: > On 07/19/2017 04:27 AM, Piotr Gackiewicz wrote: >> But one has changed much between 4.9.13 and 4.9.25: kernel size and >> configuration. >> 4.9.13 size was 6MB and 4.9.24 is 7.1MB. Many modules have been >> compiled into kernel, here is shortened, but significant list: >> - iptables (NETFILTER_XTABLES, IP_NF_FILTER, IP_NF_TARGET_REJECT) >> - SATA_AHCI >> - ATA_AHCI (PATA, what a heck?) >> - FBDEV_FRONTEND >> - HID_MAGICKMOUSE >> - HID_NTRIG >> - USB_XHCI >> - INTEL_SMARTCONNECT >> > Modules that are not loaded are not used. You got me wrong: these are compiled into kernel statically, not as modules... More updates on kernel problems: 4.9.13 (no xen patches), recompiled with config applied from 4.9.25, appears to be also faulty in my env. I'll try to dissect config and compilation differences and try to isolate what went wrong there. Trace included below. Regards, [ 151.899085] vif vif-1-0 vif1.0: Trying to unmap invalid handle! pending_idx: 0xe5 [ 151.899158] ------------[ cut here ]------------ [ 151.899163] kernel BUG at drivers/net/xen-netback/netback.c:428! [ 151.899168] invalid opcode: 0000 [#1] SMP [ 151.899171] Modules linked in: xt_physdev br_netfilter xt_mac ebt_arp xen_pciback xen_gntalloc hwmon_vid ebtable_filter ebtables bridge 8021q mrp garp stp llc xt_CT xt_addrtype iptable_r aw nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_owner iptable_mangle iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_i pv6 xt_state nf_conntrack ip6table_filter ip6_tables xen_netback xen_blkback xen_gntdev xen_evtchn xenfs xen_privcmd ppdev parport_pc parport fjes 3c59x asus_atk0110 pcspkr serio_raw k8temp via_rhine mii i2c_viapro shpchp raid1 ata_generic sata_via [ 151.899271] CPU: 0 PID: 2097 Comm: vif1.0-q0-deall Not tainted 4.9.13-26.itl.3.el6.x86_64 #1 [ 151.899276] Hardware name: System manufacturer System Product Name/K8V-VM, BIOS 0902 05/14/2007 [ 151.899282] task: ffff88006786c900 task.stack: ffffc900408f8000 [ 151.899286] RIP: e030:[<ffffffffc00a576b>] [<ffffffffc00a576b>] xenvif_tx_dealloc_action+0x23b/0x240 [xen_netback] [ 151.899301] RSP: e02b:ffffc900408fbbe8 EFLAGS: 00010246 [ 151.899305] RAX: 0000000000000045 RBX: ffffc90040915000 RCX: 0000000000000000 [ 151.899309] RDX: 0000000000000000 RSI: ffff88007220e0e8 RDI: ffff88007220e0e8 [ 151.899313] RBP: ffffc900408fbe18 R08: 00000000fffffffe R09: 0000000000000000 [ 151.899318] R10: 0000000000000000 R11: 0000000000000000 R12: ffffc9004091cf48 [ 151.899322] R13: 0000000000017852 R14: aaaaaaaaaaaaaaab R15: ffffc900408fbe68 [ 151.899331] FS: 00007f207a23f9a0(0000) GS:ffff880072200000(0000) knlGS:0000000000000000 [ 151.899336] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 151.899340] CR2: 00007f3d6f821000 CR3: 0000000066538000 CR4: 0000000000000660 [ 151.899345] Stack: [ 151.899349] ffff88006786c980 ffff88006786ea80 ffff880072216e80 0000000000000000 [ 151.899356] ffff88007220b890 0000000000000000 ffffc900408fbca8 ffffffff8101e0da [ 151.899363] ffff88007220b890 ffff88007220c090 ffff88007220b890 ffff88007220c090 [ 151.899370] Call Trace: [ 151.899380] [<ffffffff8101e0da>] ? xen_load_sp0+0x9a/0x1a0 [ 151.899385] [<ffffffff8101e28a>] ? xen_load_tls+0xaa/0x160 [ 151.899392] [<ffffffff8102eb3c>] ? __switch_to+0x1dc/0x680 [ 151.899397] [<ffffffff810ce493>] ? finish_task_switch+0x93/0x270 [ 151.899405] [<ffffffff818ce9f8>] ? __schedule+0x238/0x530 [ 151.899411] [<ffffffff818d2e7f>] ? _raw_spin_lock_irqsave+0x1f/0x50 [ 151.899417] [<ffffffff818d2ba6>] ? _raw_spin_unlock_irqrestore+0x16/0x20 [ 151.899423] [<ffffffff810ed202>] ? prepare_to_wait_event+0x82/0x130 [ 151.899428] [<ffffffff818d2e7f>] ? _raw_spin_lock_irqsave+0x1f/0x50 [ 151.899434] [<ffffffff818d2ba6>] ? _raw_spin_unlock_irqrestore+0x16/0x20 [ 151.899439] [<ffffffff810ecd10>] ? finish_wait+0x70/0x90 [ 151.899445] [<ffffffffc00a57f6>] xenvif_dealloc_kthread+0x86/0x110 [xen_netback] [ 151.899451] [<ffffffff810ecb60>] ? woken_wake_function+0x20/0x20 [ 151.899456] [<ffffffff818cedda>] ? schedule+0x3a/0xa0 [ 151.899461] [<ffffffff818d2ba6>] ? _raw_spin_unlock_irqrestore+0x16/0x20 [ 151.899467] [<ffffffffc00a5770>] ? xenvif_tx_dealloc_action+0x240/0x240 [xen_netback] [ 151.899477] [<ffffffff810c60dd>] kthread+0xcd/0xf0 [ 151.899481] [<ffffffff810ce493>] ? finish_task_switch+0x93/0x270 [ 151.899487] [<ffffffff810d100e>] ? schedule_tail+0x1e/0xc0 [ 151.899491] [<ffffffff810c6010>] ? __kthread_init_worker+0x40/0x40 [ 151.899496] [<ffffffff818d32d5>] ret_from_fork+0x25/0x30 [ 151.899501] Code: c6 01 44 89 f0 49 39 c5 7f be 0f 0b eb fe 0f 0b eb fe 48 8b 43 20 48 c7 c6 60 da 0a c0 48 8b b8 20 03 00 00 31 c0 e8 75 f3 6f c1 <0f> 0b eb fe 90 55 48 89 e5 41 57 41 5 6 41 55 41 54 53 48 83 ec [ 151.899554] RIP [<ffffffffc00a576b>] xenvif_tx_dealloc_action+0x23b/0x240 [xen_netback] [ 151.899561] RSP <ffffc900408fbbe8> [ 151.899612] ---[ end trace 7f804a9e1f8ce687 ]--- -- Piotr Gackiewicz Intertele S.A. - operator systemów ITL.PL i DOMENY.ITL.PL al. T. Rejtana 10, 35-310 Rzeszów TEL: +48 17 8507580, FAX: +48 17 8520275 http://www.itl.pl - niezawodne usługi hostingowe http://domeny.itl.pl - tanie domeny internetowe http://www.intertele.pl