From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 87280 invoked by alias); 29 Aug 2018 01:20:20 -0000 Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org Received: (qmail 87198 invoked by uid 48); 29 Aug 2018 01:20:15 -0000 From: "agentzh at gmail dot com" To: systemtap@sourceware.org Subject: [Bug testsuite/23493] Test suite makes all CPU stuck forever on kernel 4.16.16 (Fedora 27) Date: Wed, 29 Aug 2018 01:20:00 -0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: systemtap X-Bugzilla-Component: testsuite X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: agentzh at gmail dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: systemtap at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2018-q3/txt/msg00141.txt.bz2 https://sourceware.org/bugzilla/show_bug.cgi?id=3D23493 --- Comment #8 from agentzh --- Got another VM lockup today and found the following output in the serial po= rt console: ``` Fedora 27 (Server Edition) Kernel 4.16.16-200.fc27.x86_64 on an x86_64 (ttyS1) Admin Console: =E2=80=A6 work2 login: [199810.093706] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 [199810.098304] IP: idr_find+0x0/0x10 [199810.099452] PGD 0 P4D 0 [199810.100545] Oops: 0000 [#1] SMP PTI [199810.101868] Modules linked in: stap_90d3fbe18ef964786450622403aff75f_53232(OE) stap_cb1c82c1a520c7e28bc23ff0583b723_26015(OE) stap_5546859fb0fb1fe0358665f08f8539_102168(OE) stap_1699a9c06989cded3b2bfdebd62fd6e9_7693(OE) s_97966(OE) tun binfmt_misc ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 fuse nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables vmw_vsock_vmci_transport vsock sunrpc snd_seq_midi snd_seq_midi_event snd_ens1371 coretemp crct10dif_pclmul snd_ac97_codec ac97_bus btusb gameport crc32_pclmul btrtl [199810.124418] snd_rawmidi btbcm ghash_clmulni_intel snd_seq btintel snd_seq_device bluetooth snd_pcm snd_timer snd ecdh_generic rfkill soundcore intel_rapl_perf joydev vmw_balloon i2c_piix4 vmw_vmci shpchp xfs libcrc32c vmwgfx drm_kms_helper ttm crc32c_intel drm mptspi serio_raw scsi_transport_= spi mptscsih e1000 mptbase ata_generic pata_acpi [last unloaded: stap_c0bb131f68fd6d96fe20bf726877cbfd_51549] [199810.135177] CPU: 2 PID: 53244 Comm: cat Tainted: G OE=20=20=20 4.16.16-200.fc27.x86_64 #1 [199810.137821] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015 [199810.141336] RIP: 0010:idr_find+0x0/0x10 [199810.142583] RSP: 0018:ffffbeddc3423d40 EFLAGS: 00010046 [199810.144310] RAX: 0000000000000000 RBX: ffffbeddc2191000 RCX: 00000000ffffffff [199810.146450] RDX: 0000000000000000 RSI: 000000000000cffc RDI: 0000000000000008 [199810.148760] RBP: ffffbeddc21918a8 R08: 0000000000002710 R09: ffff9e8127a01f00 [199810.150956] R10: 0000000000002710 R11: 0000000000000000 R12: 0000000000000001 [199810.153205] R13: 0000000000000000 R14: 0000000000000000 R15: 00000000ffffffff [199810.155436] FS: 0000000000000000(0000) GS:ffff9e825fa80000(0000) knlGS:0000000000000000 [199810.157981] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [199810.212544] CR2: 0000000000000018 CR3: 000000024120a001 CR4: 00000000001606e0 [199810.215011] DR0: ffffffff8427ff88 DR1: 0000000000000000 DR2: 0000000000000000 [199810.217433] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 [199810.219853] Call Trace: [199810.233902] find_get_pid+0x38/0x50 [199810.235436] function___global_pid2task__overload_0+0x7a/0x180 [stap_90d3fbe18ef964786450622403aff75f_53232] [199810.239019] ? probe_4960+0xad6/0x1760 [stap_90d3fbe18ef964786450622403aff75f_53232] [199810.241607] ? enter_real_tracepoint_probe_0+0x198/0x2d0 [stap_90d3fbe18ef964786450622403aff75f_53232] [199810.245162] ? __schedule+0x2d3/0x860 [199810.246718] ? do_task_dead+0x3f/0x50 [199810.248254] ? do_exit+0x73b/0xbb0 [199810.249684] ? do_group_exit+0x3a/0xa0 [199810.251200] ? SyS_exit_group+0x10/0x10 [199810.252711] ? do_syscall_64+0x74/0x180 [199810.254238] ? entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [199810.256126] Code: e7 44 89 6c 24 04 e8 00 fe ff ff eb af e8 09 b9 80 ff= 66 0f 1f 84 00 00 00 00 00 8b 47 10 31 d2 48 29 c6 e9 c3 55 00 00 0f 1f 00 <8b= > 47 10 48 29 c6 e9 a5 55 00 00 0f 1f 44 00 00 55 53 48 89 f5 [199810.262366] RIP: idr_find+0x0/0x10 RSP: ffffbeddc3423d40 [199810.264261] CR2: 0000000000000018 [199810.265642] ---[ end trace 4e992f315e802219 ]--- [199810.267325] Fixing recursive fault but reboot is needed! ``` Is it a bug in the stap runtime or in the kernel? --=20 You are receiving this mail because: You are the assignee for the bug.