From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Thu, 23 May 2013 23:33:39 -0400 (EDT) From: CAI Qian Message-ID: <806463874.5711876.1369366419059.JavaMail.root@redhat.com> In-Reply-To: <1125086079.5019070.1369285040855.JavaMail.root@redhat.com> References: <40971621.4497871.1369211701112.JavaMail.root@redhat.com> <1805266998.4499261.1369211998387.JavaMail.root@redhat.com> <20130522095300.GK29466@dastard> <1483868349.4996990.1369279016162.JavaMail.root@redhat.com> <20130523034611.GX24543@dastard> <1125086079.5019070.1369285040855.JavaMail.root@redhat.com> Subject: Re: 3.9.2/3.9.3: stack overrun on s390x and ppc64 (WAS Re: 3.9.2: xfstests triggered panic) MIME-Version: 1.0 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com List-Archive: List-Post: To: linux-s390 , linuxppc-dev@lists.ozlabs.org Cc: LKML , Steve Best 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13:33:42 +1000 (EST) Date: Thu, 23 May 2013 23:33:39 -0400 (EDT) From: CAI Qian To: linux-s390 , linuxppc-dev@lists.ozlabs.org Message-ID: <806463874.5711876.1369366419059.JavaMail.root@redhat.com> In-Reply-To: <1125086079.5019070.1369285040855.JavaMail.root@redhat.com> References: <40971621.4497871.1369211701112.JavaMail.root@redhat.com> <1805266998.4499261.1369211998387.JavaMail.root@redhat.com> <20130522095300.GK29466@dastard> <1483868349.4996990.1369279016162.JavaMail.root@redhat.com> <20130523034611.GX24543@dastard> <1125086079.5019070.1369285040855.JavaMail.root@redhat.com> Subject: Re: 3.9.2/3.9.3: stack overrun on s390x and ppc64 (WAS Re: 3.9.2: xfstests triggered panic) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Cc: Dave Chinner , LKML , Steve Best , xfs@oss.sgi.com, stable@vger.kernel.org, Hendrik Brueckner List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , OK, here is clearer stack output from the run. CAI Qian + ./check FSTYP -- xfs (non-debug) PLATFORM -- Linux/s390x ibm-z10-23 3.9.3 001=09 29s 002=09 3s 003=09 2s 004=09 [not run] this test requires a valid $SCRATCH_DEV 005=09 2s 006=09 9s 007=09 10s 008=09 7s 009=09 [not run] this test requires a valid $SCRATCH_DEV 010=09 [not run] dbtest was not built for this platform 011=09 9s 012=09 10s 013=09 35s 014=09 5s 015=09 [not run] this test requires a valid $SCRATCH_DEV 016=09 [not run] this test requires a valid $SCRATCH_DEV 017=09 [not run] this test requires a valid $SCRATCH_DEV 018=09 [not run] this test requires a valid $SCRATCH_DEV 019=09 [not run] this test requires a valid $SCRATCH_DEV 020=09 [ 1316.571227] XFS (dm-0): Mounting Filesystem [ 1316.697803] XFS (dm-0): Ending clean mount [ 1318.080615] XFS (dm-0): Ending clean mount [ 1348.791125] XFS (dm-0): Mounting Filesystem [ 1348.989166] XFS (dm-0): Ending clean mount [ 1353.335478] XFS (dm-0): Mounting Filesystem [ 1353.496364] XFS (dm-0): Ending clean mount [ 1357.495427] XFS (dm-0): Mounting Filesystem [ 1357.676971] XFS (dm-0): Ending clean mount [ 1361.646399] XFS (dm-0): Mounting Filesystem [ 1361.890426] XFS (dm-0): Ending clean mount [ 1371.798944] XFS (dm-0): Mounting Filesystem [ 1371.976922] XFS (dm-0): Ending clean mount [ 1384.559103] XFS (dm-0): Mounting Filesystem [ 1384.725657] XFS (dm-0): Ending clean mount [ 1393.131347] XFS (dm-0): Mounting Filesystem [ 1393.357927] XFS (dm-0): Ending clean mount [ 1407.282708] XFS (dm-0): Mounting Filesystem [ 1407.745176] XFS (dm-0): Ending clean mount [ 1422.927074] XFS (dm-0): Mounting Filesystem [ 1423.136266] XFS (dm-0): Ending clean mount [ 1425.500910] XFS (dm-0): Mounting Filesystem [ 1425.608851] XFS (dm-0): Ending clean mount [ 1450.978110] XFS (dm-0): Mounting Filesystem [ 1451.255368] XFS (dm-0): Ending clean mount [ 1453.603742] XFS (dm-0): Mounting Filesystem [ 1453.680657] XFS (dm-0): Ending clean mount [ 1456.262266] XFS (dm-0): Mounting Filesystem [ 1456.330515] XFS (dm-0): Ending clean mount [ 1457.053767] XFS (dm-0): Mounting Filesystem [ 1457.107258] XFS (dm-0): Ending clean mount [ 1462.049374] XFS (dm-0): Mounting Filesystem [ 1462.111389] XFS (dm-0): Ending clean mount [ 1471.109589] ODEBUG: deactivate not available (active state 0) object typ= e: ti mer_list hint: process_timeout+0x0/0x8 [ 1471.109683] ------------[ cut here ]------------ [ 1471.109688] WARNING: at lib/debugobjects.c:260 [ 1471.109692] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_n= s(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) = ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable= _nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ip= v4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtabl= es(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth= _l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_= mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F)= dm_l og(F) dm_mod(F) [ 1471.109848] CPU: 0 Tainted: GF 3.9.3 #2 [ 1471.109858] Process swapper/0 (pid: 0, task: 0000000000a2b4d0, ksp: 0000= 00000 0a17d28) [ 1471.109868] Krnl PSW : 0404c00180000000 000000000046c84a (debug_print_ob= ject+ 0xca/0xd8) [ 1471.114762] R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:= 0 EA: 3 Krnl GPRS: 0000000000000000 0000000000a2b4d0 0000000000000067 000000000101f= 708 [ 1471.114769] 000000000046c846 0000000084a4d448 000000000086936= a 000 0000001040700 [ 1471.114773] 0000000001a0f290 0400000000000001 0000000000874cf= 8 000 0000000a395d8 [ 1471.114777] 000000000195f820 000000000001bd20 000000000046c84= 6 000 000000001bc20 [ 1471.114792] Krnl Code: 000000000046c83a: e34410000004 lg %r4= ,0(%r 4,%r1) 000000000046c840: c0e500139f88 brasl %r14,6e0750 #000000000046c846: a7f40001 brc 15,46c848 >000000000046c84a: a7f4ffc2 brc 15,46c7ce 000000000046c84e: a7290000 lghi %r2,0 000000000046c852: a7f4ffd7 brc 15,46c800 000000000046c856: 0707 bcr 0,%r7 000000000046c858: ebaff0680024 stmg %r10,%r15,104(%r15) [ 1471.114825] Call Trace: [ 1471.114828] ([<000000000046c846>] debug_print_object+0xc6/0xd8) [ 1471.114833] [<000000000046d35c>] debug_object_deactivate+0x15c/0x160 [ 1471.114838] [<0000000000148244>] run_timer_softirq+0x180/0x464 [ 1471.114843] [<000000000013d8d6>] __do_softirq+0x112/0x42c [ 1471.114847] [<000000000013ddf8>] irq_exit+0xc8/0xe8 [ 1471.114851] [<000000000010d55e>] do_extint+0x25e/0x318 [ 1471.114859] [<00000000006f0d90>] ext_skip+0x40/0x44 [ 1471.114866] [<00000000006f05d6>] vtime_stop_cpu+0x52/0xbc [ 1471.114870] ([<00000000006f05b4>] vtime_stop_cpu+0x30/0xbc) [ 1471.114874] [<000000000010476e>] cpu_idle+0x112/0x1b8 [ 1471.114879] [<0000000000aaf99a>] start_kernel+0x42e/0x43c [ 1471.114885] [<0000000000100020>] _stext+0x20/0x80 [ 1471.114891] 2 locks held by swapper/0/0: [ 1471.114894] #0: (&(&base->lock)->rlock){-.-.-.}, at: [<000000000014812= 8>] r un_timer_softirq+0x64/0x464 [ 1471.114908] #1: (&obj_hash[i].lock){-.-.-.}, at: [<000000000046d2ba>] = debug _object_deactivate+0xba/0x160 [ 1471.114918] Last Breaking-Event-Address: [ 1471.114921] [<000000000046c846>] debug_print_object+0xc6/0xd8 [ 1471.114927] ---[ end trace dd87895f75677361 ]--- [ 1471.117683] ODEBUG: object is on stack, but not annotated [ 1471.117723] ------------[ cut here ]------------ [ 1471.117726] WARNING: at lib/debugobjects.c:300 [ 1471.117729] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_n= s(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) = ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable= _nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ip= v4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtabl= es(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth= _l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_= mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F)= dm_l og(F) dm_mod(F) [ 1471.117791] CPU: 0 Tainted: GF W 3.9.3 #2 [ 1471.117794] Process rcu_sched (pid: 10, task: 00000000fffe8000, ksp: 000= 00000 fffe7ae0) [ 1471.117797] Krnl PSW : 0404c00180000000 000000000046ccce (__debug_object= _init +0x35a/0x480) [ 1471.117804] R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:= 0 EA: 3 Krnl GPRS: 0000000000000000 00000000fffe8000 000000000000002d 000000000101f= 708 [ 1471.117811] 000000000046ccca 0000000000000001 0000000000a395d= 8 070 0000000000000 [ 1471.117814] 0000000000a78750 0000000001a0f298 00000000fffe7cf= 0 000 00000f8daa938 [ 1471.117818] 0000000001a0f290 00000000007434c0 000000000046ccc= a 00 00000fffe7a40 [ 1471.117852] Krnl Code: 000000000046ccbe: c02000217617 larl %r2= ,89b8 ec 000000000046ccc4: c0e500139d46 brasl %r14,6e0750 #000000000046ccca: a7f40001 brc 15,46cccc >000000000046ccce: a7f4ff03 brc 15,46cad4 000000000046ccd2: a7380000 lhi %r3,0 000000000046ccd6: a7f4ffe9 brc 15,46cca8 000000000046ccda: c02000217622 larl %r2,89b91e 000000000046cce0: c0e500139d38 brasl %r14,6e0750 [ 1471.117884] Call Trace: [ 1471.117887] ([<000000000046ccca>] __debug_object_init+0x356/0x480) [ 1471.117891] [<0000000000146f42>] init_timer_key+0x3a/0x164 [ 1471.117897] [<0000000000147eac>] timer_fixup_assert_init+0x50/0xa8 [ 1471.117901] [<000000000046d7a4>] debug_object_assert_init+0x124/0x154 [ 1471.117906] [<0000000000148676>] try_to_del_timer_sync+0x2e/0x94 [ 1471.117910] [<000000000014878e>] del_timer_sync+0xb2/0x104 [ 1471.117915] [<00000000006ea950>] schedule_timeout+0x190/0x37c [ 1471.117922] [<00000000001f1118>] rcu_gp_kthread+0x320/0x59c [ 1471.117927] [<0000000000164176>] kthread+0xe6/0xec [ 1471.117934] [<00000000006f0906>] kernel_thread_starter+0x6/0xc [ 1471.117938] [<00000000006f0900>] kernel_thread_starter+0x0/0xc [ 1471.117943] 1 lock held by rcu_sched/10: [ 1471.117945] #0: (&obj_hash[i].lock){-.-.-.}, at: [<000000000046caba>] = __deb ug_object_init+0x146/0x480 [ 1471.117955] Last Breaking-Event-Address: [ 1471.117958] [<000000000046ccca>] __debug_object_init+0x356/0x480 [ 1471.117962] ---[ end trace dd87895f75677362 ]--- [ 1471.117967] ODEBUG: assert_init not available (active state 0) object ty= pe: t imer_list hint: stub_timer+0x0/0x8 [ 1471.117984] ------------[ cut here ]------------ [ 1471.117987] WARNING: at lib/debugobjects.c:260 [ 1471.117990] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_n= s(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) = ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable= _nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ip= v4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtabl= es(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth= _l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_= mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F)= dm_l og(F) dm_mod(F) [ 1471.118053] CPU: 0 Tainted: GF W 3.9.3 #2 [ 1471.118075] Process rcu_sched (pid: 10, task: 00000000fffe8000, ksp: 000= 00000 fffe7ae0) [ 1471.118079] Krnl PSW : 0704e00180000000 000000000046c84a (debug_print_ob= ject+ 0xca/0xd8) [ 1471.118085] R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:= 0 EA: 3 Krnl GPRS: 0000000000000000 00000000fffe8000 0000000000000063 0000000000000= 001 [ 1471.118092] 000000000046c846 0000000000000001 000000000086936= a 000 0000000a1d300 [ 1471.118095] 0000000001a0f290 07000000006ed3fc 000000000089ba1= 4 000 0000000a395d8 [ 1471.118099] 000000000195f820 00000000fffe7bc8 000000000046c84= 6 000 00000fffe7ac8 [ 1471.118109] Krnl Code: 000000000046c83a: e34410000004 lg %r4= ,0(%r 4,%r1) 000000000046c840: c0e500139f88 brasl %r14,6e0750 #000000000046c846: a7f40001 brc 15,46c848 >000000000046c84a: a7f4ffc2 brc 15,46c7ce 000000000046c84e: a7290000 lghi %r2,0 000000000046c852: a7f4ffd7 brc 15,46c800 000000000046c856: 0707 bcr 0,%r7 000000000046c858: ebaff0680024 stmg %r10,%r15,104(%r15) [ 1471.118141] Call Trace: [ 1471.118144] ([<000000000046c846>] debug_print_object+0xc6/0xd8) [ 1471.118149] [<000000000046d7ce>] debug_object_assert_init+0x14e/0x154 [ 1471.118153] [<0000000000148676>] try_to_del_timer_sync+0x2e/0x94 [ 1471.118158] [<000000000014878e>] del_timer_sync+0xb2/0x104 [ 1471.118163] [<00000000006ea950>] schedule_timeout+0x190/0x37c [ 1471.118167] [<00000000001f1118>] rcu_gp_kthread+0x320/0x59c [ 1471.118172] [<0000000000164176>] kthread+0xe6/0xec [ 1471.118176] [<00000000006f0906>] kernel_thread_starter+0x6/0xc [ 1471.118180] [<00000000006f0900>] kernel_thread_starter+0x0/0xc [ 1471.118185] no locks held by rcu_sched/10. [ 1471.118188] Last Breaking-Event-Address: [ 1471.118190] [<000000000046c846>] debug_print_object+0xc6/0xd8 [ 1471.118195] ---[ end trace dd87895f75677363 ]--- [ 1471.121980] Unable to handle kernel pointer dereference at virtual kerne= l add ress 000003ff8072c000 [ 1471.123714] Oops: 0011 [#1] SMP [ 1471.123720] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_n= s(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) = ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable= _nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ip= v4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtabl= es(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth= _l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_= mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F)= dm_l og(F) dm_mod(F) [ 1471.123777] CPU: 0 Tainted: GF W 3.9.3 #2 [ 1471.123781] Process systemd-journal (pid: 516, task: 00000000f5ad8000, k= sp: 0 0000000f544fbd0) [ 1471.123784] Krnl PSW : 0704e00180000000 000003ff80749cc2 (xfs_vm_page_mk= write +0x12/0x1c [xfs]) [ 1471.154773] R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:= 0 EA: 3 Krnl GPRS: 00000000000015e8 000003ff8072cc30 0000000000000001 0000000000000= 000 [ 1471.154781] 00000000006ef176 00000000007036b8 00000000f97b7d9= 8 000 003fffb3e7000 [ 1471.154784] 000003fffb3e7000 00000000f8f65a00 00000000f847273= 8 000 00000f8ffc2c0 [ 1471.154788] 00000000f8472738 000000000070d5e0 000003ff80749cb= 6 000 00000f544fc28 [ 1471.154802] Krnl Code: 000003ff80749cb6: 1222 ltr %r2= ,%r2 000003ff80749cb8: a784ffd8 brc 8,3ff80749c68 #000003ff80749cbc: c010ffff17ba larl %r1,3ff8072cc30 >000003ff80749cc2: e31010000004 lg %r1,0(%r1) 000003ff80749cc8: e32010000012 lt %r2,0(%r1) 000003ff80749cce: a7740032 brc 7,3ff80749d32 000003ff80749cd2: e31003180004 lg %r1,792 000003ff80749cd8: e330101c0012 lt %r3,28(%r1) [ 1471.154838] Call Trace: [ 1471.154841] ([<0000000000261870>] do_wp_page+0x6f8/0xa4c) [ 1471.154851] [<0000000000262f2c>] handle_pte_fault+0x65c/0xa10 [ 1471.154856] [<0000000000264a22>] handle_mm_fault+0x182/0x260 [ 1471.154860] [<00000000006f21d0>] do_protection_exception+0x1b8/0x3cc [ 1471.154867] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.154871] [<000000008001d60a>] 0x8001d60a [ 1471.154894] INFO: lockdep is turned off. [ 1471.154897] Last Breaking-Event-Address: [ 1471.154899] [<00000000001ed7ca>] rcu_lockdep_current_cpu_online+0x6e/0x= 84 [ 1471.154909] [ 1471.154913] ---[ end trace dd87895f75677364 ]--- [ 1471.157438] ------------[ cut here ]------------ [ 1471.157446] Kernel BUG at 00000000006eb186 [verbose debug info unavailab= le] [ 1471.157508] addressing exception: 0005 [#2] SMP [ 1471.157514] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_n= s(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) = ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable= _nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ip= v4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtabl= es(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth= _l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_= mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F)= dm_l og(F) dm_mod(F) [ 1471.157574] CPU: 0 Tainted: GF D W 3.9.3 #2 [ 1471.157577] Process systemd-journal (pid: 516, task: 00000000f5ad8000, k= sp: 0 0000000f544f578) [ 1471.157580] Krnl PSW : 0404d00180000000 00000000006eb186 (mutex_lock_nes= ted+0 xde/0x36c) [ 1471.157591] R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:= 0 EA: 3 Krnl GPRS: 000000000000166e 0000000000000000 00000000ffffffff 0000000000a78= 630 [ 1471.157597] 0000000000000000 0000000000000000 000000000000000= 2 000 00000100073f8 [ 1471.157601] 00000000f5ad8000 000000000101f708 000000000000000= 0 070 0000000000000 [ 1471.157604] 0000000010007388 0000000010007380 00000000006eb17= 0 000 00000f544f658 [ 1471.157616] Krnl Code: 00000000006eb178: a7180000 lhi %r1= ,0 00000000006eb17c: c027ffffffff xilf %r2,4294967295 #00000000006eb182: ba12d008 cs %r1,%r2,8(%r13) >00000000006eb186: 1211 ltr %r1,%r1 00000000006eb188: a774011b brc 7,6eb3be 00000000006eb18c: e31090000012 lt %r1,0(%r9) 00000000006eb192: a7740007 brc 7,6eb1a0 00000000006eb196: e3d0d0700020 cg %r13,112(%r13) [ 1471.157650] Call Trace: [ 1471.157652] ([<00000000006eb170>] mutex_lock_nested+0xc8/0x36c) [ 1471.157657] [<0000000000260e3e>] unmap_single_vma+0x786/0x7d0 [ 1471.157663] [<000000000026219c>] unmap_vmas+0x50/0x74 [ 1471.157666] [<000000000026b7aa>] exit_mmap+0x186/0x224 [ 1471.157671] [<000000000012ef88>] mmput+0x84/0x110 [ 1471.157677] [<0000000000139fd2>] do_exit+0x2c6/0xce8 [ 1471.157682] [<0000000000100ef2>] die+0x13e/0x158 [ 1471.157687] [<000000000011dd6e>] do_no_context+0xba/0xf0 [ 1471.157692] [<00000000006f2714>] do_dat_exception+0x330/0x390 [ 1471.157697] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.157701] [<000003ff80749cc2>] xfs_vm_page_mkwrite+0x12/0x1c [xfs] [ 1471.157800] ([<0000000000261870>] do_wp_page+0x6f8/0xa4c) [ 1471.157805] [<0000000000262f2c>] handle_pte_fault+0x65c/0xa10 [ 1471.157809] [<0000000000264a22>] handle_mm_fault+0x182/0x260 [ 1471.157813] [<00000000006f21d0>] do_protection_exception+0x1b8/0x3cc [ 1471.157817] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.157821] [<000000008001d60a>] 0x8001d60a [ 1471.157827] INFO: lockdep is turned off. [ 1471.157829] Last Breaking-Event-Address: [ 1471.157832] [<00000000001af490>] trace_hardirqs_off_caller+0x7c/0xb0 [ 1471.157840] [ 1471.157857] ---[ end trace dd87895f75677365 ]--- [ 1471.157863] Fixing recursive fault but reboot is needed! [ 1471.157867] BUG: scheduling while atomic: systemd-journal/516/0x00000002 [ 1471.157870] INFO: lockdep is turned off. [ 1471.157872] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_n= s(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) = ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable= _nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ip= v4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtabl= es(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth= _l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_= mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F)= dm_l og(F) dm_mod(F) [ 1471.157928] CPU: 0 Tainted: GF D W 3.9.3 #2 [ 1471.157931] Process systemd-journal (pid: 516, task: 00000000f5ad8000, k= sp: 0 0000000f544f578) [ 1471.157934] 00000000f544f168 00000000f544f178 0000000000000002 00= 00000 000000000 00000000f544f208 00000000f544f180 00000000f544f180 0000000000100a1e 0000000000000000 0000000000ffb000 000000000000000a 000000000000000a 00000000f544f1c8 00000000f544f168 0000000000000000 0000000000000000 00000000f5ad8000 0000000000100a1e 00000000f544f168 00000000f544f1b8 [ 1471.157966] Call Trace: [ 1471.157968] ([<0000000000100920>] show_trace+0xf0/0x148) [ 1471.157973] [<00000000006e0e88>] __schedule_bug+0x80/0x98 [ 1471.157977] [<00000000006ed9ea>] __schedule+0xc6a/0xcc8 [ 1471.157981] [<000000000013a99e>] do_exit+0xc92/0xce8 [ 1471.157985] [<0000000000100ef2>] die+0x13e/0x158 [ 1471.157990] [<00000000006f02ac>] do_per_trap+0x0/0xb4 [ 1471.157993] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.157997] [<00000000006eb186>] mutex_lock_nested+0xde/0x36c [ 1471.158002] ([<00000000006eb170>] mutex_lock_nested+0xc8/0x36c) [ 1471.158006] [<0000000000260e3e>] unmap_single_vma+0x786/0x7d0 [ 1471.158010] [<000000000026219c>] unmap_vmas+0x50/0x74 [ 1471.158014] [<000000000026b7aa>] exit_mmap+0x186/0x224 [ 1471.158018] [<000000000012ef88>] mmput+0x84/0x110 [ 1471.158021] [<0000000000139fd2>] do_exit+0x2c6/0xce8 [ 1471.158025] [<0000000000100ef2>] die+0x13e/0x158 [ 1471.158029] [<000000000011dd6e>] do_no_context+0xba/0xf0 [ 1471.158033] [<00000000006f2714>] do_dat_exception+0x330/0x390 [ 1471.158037] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.158041] [<000003ff80749cc2>] xfs_vm_page_mkwrite+0x12/0x1c [xfs] [ 1471.158070] ([<0000000000261870>] do_wp_page+0x6f8/0xa4c) [ 1471.158074] [<0000000000262f2c>] handle_pte_fault+0x65c/0xa10 [ 1471.158078] [<0000000000264a22>] handle_mm_fault+0x182/0x260 [ 1471.158082] [<00000000006f21d0>] do_protection_exception+0x1b8/0x3cc [ 1471.158086] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.158090] [<000000008001d60a>] 0x8001d60a [ 1471.158094] INFO: lockdep is turned off. [ 1471.158221] Unable to handle kernel paging request at virtual user addre= ss (null) [ 1471.158247] Oops: 0004 [#3] SMP [ 1471.158251] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_n= s(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) = ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable= _nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ip= v4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtabl= es(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth= _l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_= mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F)= dm_l og(F) dm_mod(F) [ 1471.158306] CPU: 0 Tainted: GF D W 3.9.3 #2 [ 1471.158309] Process in:imklog (pid: 765, task: 00000000fc7f2430, ksp: 00= 00000 0fc36fd50) [ 1471.158312] Krnl PSW : 0404e00180000000 0000000000183520 (tg_load_down+0= x60/0 xb0) [ 1471.158320] R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:= 0 EA: 3 Krnl GPRS: 0000000000000040 0000000000000000 0000000000000000 0000000000000= 008 [ 1471.158327] 0000000000000000 0000000000000000 00000000f925340= 0 000 0000000aa0854 [ 1471.158330] 0000000000aa0852 00000000001834c0 0000000000170ed= c 000 0000000000000 [ 1471.158333] 00000000f9187e00 00000000fcd5c800 000000000017a33= 0 000 00000fc36fb48 [ 1471.158343] Krnl Code: 0000000000183512: a7290000 lghi %r2= ,0 0000000000183516: e31310000004 lg %r1,0(%r3,%r1) #000000000018351c: b9040045 lgr %r4,%r5 >0000000000183520: e34010980024 stg %r4,152(%r1) 0000000000183526: ebbcf0700004 lmg %r11,%r12,112(%r15) 000000000018352c: 07fe bcr 15,%r14 000000000018352e: eb430003000d sllg %r4,%r3,3 0000000000183534: c05000451512 larl %r5,a25f58 [ 1471.158377] Call Trace: [ 1471.158380] ([<000000000018bd96>] load_balance+0x236/0xc7c) [ 1471.158385] [<000000000018be16>] load_balance+0x2b6/0xc7c [ 1471.158389] [<000000000018d0a2>] idle_balance+0x212/0x494 [ 1471.158393] [<00000000006ed9ae>] __schedule+0xc2e/0xcc8 [ 1471.158397] [<00000000006f0c30>] io_reschedule+0xa/0x1a [ 1471.158402] [<000003fffd3bea22>] 0x3fffd3bea22 [ 1471.158406] INFO: lockdep is turned off. [ 1471.158408] Last Breaking-Event-Address: [ 1471.158411] [<000000000017a32e>] walk_tg_tree_from+0x46/0x190 [ 1471.158416] [ 1471.158418] ---[ end trace dd87895f75677366 ]--- [ 1471.158423] BUG: sleeping function called from invalid context at kernel= /rwse m.c:20 [ 1471.158426] in_atomic(): 1, irqs_disabled(): 0, pid: 765, name: in:imklo= g [ 1471.158429] INFO: lockdep is turned off. [ 1471.158432] CPU: 0 Tainted: GF D W 3.9.3 #2 [ 1471.158435] Process in:imklog (pid: 765, task: 00000000fc7f2430, ksp: 00= 00000 0fc36fd50) [ 1471.158438] 00000000fc36f690 00000000fc36f6a0 0000000000000002 00= 00000 000000000 00000000fc36f730 00000000fc36f6a8 00000000fc36f6a8 0000000000100a1e 0000000000000000 00000000fc7f2870 000000000000000a 0404e0010000000a 00000000fc36f6f0 00000000fc36f690 0000000000000000 0000000000000000 00000000006fdbc8 0000000000100a1e 00000000fc36f690 00000000fc36f6e0 [ 1471.158470] Call Trace: [ 1471.158473] ([<0000000000100920>] show_trace+0xf0/0x148) [ 1471.158477] [<0000000000175c0a>] __might_sleep+0x17a/0x238 [ 1471.158482] [<00000000006ec4de>] down_read+0x42/0xe0 [ 1471.158487] [<000000000014fea0>] exit_signals+0x38/0x144 [ 1471.158492] [<0000000000139dd6>] do_exit+0xca/0xce8 [ 1471.158496] [<0000000000100ef2>] die+0x13e/0x158 [ 1471.158500] [<000000000011dd6e>] do_no_context+0xba/0xf0 [ 1471.158504] [<00000000006f23de>] do_protection_exception+0x3c6/0x3cc [ 1471.158508] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.158513] [<0000000000183520>] tg_load_down+0x60/0xb0 [ 1471.158517] ([<000000000018bd96>] load_balance+0x236/0xc7c) [ 1471.158521] [<000000000018be16>] load_balance+0x2b6/0xc7c [ 1471.158525] [<000000000018d0a2>] idle_balance+0x212/0x494 [ 1471.158529] [<00000000006ed9ae>] __schedule+0xc2e/0xcc8 [ 1471.158533] [<00000000006f0c30>] io_reschedule+0xa/0x1a [ 1471.158537] [<000003fffd3bea22>] 0x3fffd3bea22 [ 1471.158541] INFO: lockdep is turned off. [ 1471.158545] note: in:imklog[765] exited with preempt_count 3 [ 1573.704911] Unable to handle kernel pointer dereference at virtual kerne= l add ress 00c040077ff00000 [ 1573.705014] Oops: 0038 [#4] SMP [ 1573.705029] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_n= s(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) = ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable= _nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ip= v4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtabl= es(F) ip6table_filter(F) ip6_tables(F)00: HCPGSP2629I The virtual machine is pla= ced i n CP mode due to a SIGP stop from CPU 01. iptable_filter(F) ip_tables(F) sg(F) qeth_l2(F) vmur(F) xfs(F) libcrc32c(F= ) das d_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_mod(F) ctcm(F) qeth(F) qdio(F) cc= wgrou p(F) fsm(F) dm_mirror(F) dm_region_hash(F) dm_log(F) dm_mod(F) [ 1573.705173] CPU: 1 Tainted: GF D W 3.9.3 #2 [ 1573.705177] Process attr (pid: 22262, task: 00000000b1190000, ksp: 00000= 000b0 f43eb0) [ 1573.705180] Krnl PSW : 0404e00180000000 000000000046c738 (lookup_object+= 0x20/ 0x68) [ 1573.705193] R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:= 0 EA: 3 Krnl GPRS: 7440000000000000 00c040077ff000e8 00000000fadd1eb8 0000000000000= 003 [ 1573.705199] 000000000046d2ba 0000000000000000 0000000084c1a82= 8 000 0000084c1a868 [ 1573.705203] 0000000001964250 04000000001b5d64 0000000000a3bdf= 8 000 0000001964258 [ 1573.705206] 00000000fadd1eb8 00000000007434f0 000000000046d2c= c 000 00000feb0b488 [ 1573.705221] Krnl Code: 000000000046c72c: a7380001 lhi %r3= ,1 000000000046c730: a7f40009 brc 15,46c742 #000000000046c734: a73a0001 ahi %r3,1 >000000000046c738: e32010180020 cg %r2,24(%r1) 000000000046c73e: a7840016 brc 8,46c76a 000000000046c742: e31010000002 ltg %r1,0(%r1) 000000000046c748: a774fff6 brc 7,46c734 000000000046c74c: c010002dcfc0 larl %r1,a266cc [ 1573.705254] Call Trace: [ 1573.705257] ([<000000000046d2ba>] debug_object_deactivate+0xba/0x160) [ 1573.705263] [<0000000000168890>] __run_hrtimer+0x58/0x474 [ 1573.705269] [<0000000000169af2>] hrtimer_interrupt+0x116/0x2b0 [ 1573.705273] [<0000000000104036>] clock_comparator_work+0x4a/0x54 [ 1573.705279] [<000000000010d5b4>] do_extint+0x2b4/0x318 [ 1573.705285] [<00000000006f0d90>] ext_skip+0x40/0x44 [ 1573.705292] [<000003ff80108ba4>] ipt_do_table+0x298/0x8d0 [ip_tables] [ 1573.705300] ([<000003ff801089d2>] ipt_do_table+0xc6/0x8d0 [ip_tables]) [ 1573.705305] [<000003ff80165318>] nf_nat_ipv4_fn+0x1b4/0x354 [iptable_na= t] [ 1573.705310] [<000003ff80165598>] nf_nat_ipv4_in+0x38/0x98 [iptable_nat] [ 1573.705314] [<00000000005d047c>] nf_iterate+0xd4/0x1b0 [ 1573.705903] [<00000000005d0680>] nf_hook_slow+0x128/0x2cc [ 1573.705909] [<00000000005de956>] ip_rcv+0x272/0x360 [ 1573.705914] [<0000000000592af6>] __netif_receive_skb_core+0xac2/0xe70 [ 1573.705919] [<00000000005957e4>] netif_receive_skb+0x48/0x260 [ 1573.705924] [<000003ff80095d16>] qeth_l2_poll+0x30a/0x540 [qeth_l2] [ 1573.705938] [<0000000000595f58>] net_rx_action+0x158/0x340 [ 1573.705942] [<000000000013d8d6>] __do_softirq+0x112/0x42c [ 1573.705947] [<000000000013ddf8>] irq_exit+0xc8/0xe8 [ 1573.705951] [<000000000010d55e>] do_extint+0x25e/0x318 [ 1573.705956] [<00000000006f0d90>] ext_skip+0x40/0x44 [ 1573.705961] [<000000000045a634>] memmove+0x14/0x5c [ 1573.705968] ([<000003ff807d7a10>] __func__.41994+0x10/0xffffffffffffb600= [xfs ]) [ 1573.706104] [<000003ff8076e6d2>] xfs_attr_leaf_compact+0xee/0x24c [xfs] [ 1573.706224] [<000003ff80772036>] xfs_attr_leaf_add+0x10a/0x268 [xfs] [ 1573.706272] [<000003ff8076a814>] xfs_attr_leaf_addname+0x11c/0x5a4 [xfs= ] [ 1573.706303] [<000003ff8076b028>] xfs_attr_set_int+0x38c/0x4b8 [xfs] [ 1573.706333] [<000003ff8076c9aa>] xfs_attr_set+0xb2/0xb8 [xfs] [ 1573.706363] [<000003ff8075d17e>] xfs_xattr_set+0x66/0xa0 [xfs] [ 1573.706393] [<00000000002d0a36>] generic_setxattr+0x7e/0x98 [ 1573.706400] [<00000000002d1430>] __vfs_setxattr_noperm+0x78/0x1dc [ 1573.706404] [<00000000002d1652>] vfs_setxattr+0xbe/0xc4 [ 1573.706408] [<00000000002d17b8>] setxattr+0x160/0x1c4 [ 1573.706412] [<00000000002d1ba0>] SyS_lsetxattr+0xac/0xe8 [ 1573.706416] [<00000000006f08b4>] sysc_tracego+0x14/0x1a [ 1573.706420] [<000003fffd2c2d1a>] 0x3fffd2c2d1a [ 1573.706427] INFO: lockdep is turned off. [ 1573.706430] Last Breaking-Event-Address: [ 1573.706433] [<000000000046c748>] lookup_object+0x30/0x68 [ 1573.706439] [ 1573.706443] Kernel panic - not syncing: Fatal exception in interrupt 01: HCPGIR450W CP entered; disabled wait PSW 00020001 80000000 00000000 001= 0F384 ----- Original Message ----- > From: "CAI Qian" > To: "linux-s390" , linuxppc-dev@lists.ozlabs.= org > Cc: "LKML" , stable@vger.kernel.org, xfs@os= s.sgi.com, "Steve Best" , > "Hendrik Brueckner" , "Dave Chinner" > Sent: Thursday, May 23, 2013 12:57:20 PM > Subject: 3.9.2/3.9.3: stack overrun on s390x and ppc64 (WAS Re: 3.9.2: xf= stests triggered panic) >=20 > Original report: > http://oss.sgi.com/archives/xfs/2013-05/msg00683.html >=20 > Also seen on Power7: > http://marc.info/?l=3Dlinux-kernel&m=3D136927904900692&w=3D2 >=20 > CAI Qian >=20 > ----- Original Message ----- > > From: "Dave Chinner" > > To: "CAI Qian" > > Cc: "LKML" , stable@vger.kernel.org, > > xfs@oss.sgi.com > > Sent: Thursday, May 23, 2013 11:46:11 AM > > Subject: Re: 3.9.2: xfstests triggered panic > >=20 > > On Wed, May 22, 2013 at 11:16:56PM -0400, CAI Qian wrote: > > > ----- Original Message ----- > > > > From: "Dave Chinner" > > > > To: "CAI Qian" > > > > Cc: "LKML" , stable@vger.kernel.org, > > > > xfs@oss.sgi.com > > > > Sent: Wednesday, May 22, 2013 5:53:00 PM > > > > Subject: Re: 3.9.2: xfstests triggered panic > > > >=20 > > > > On Wed, May 22, 2013 at 04:39:58AM -0400, CAI Qian wrote: > > > > > Reproduced on almost all s390x guests by running xfstests. > > > > >=20 > > > > > 14634.396658=C2=A8 XFS (dm-1): Mounting Filesystem > > > > > 14634.525522=C2=A8 XFS (dm-1): Ending clean mount > > > > > 14640.413007=C2=A8 <000000000017c6d4>=C2=A8 idle_balance+0x1a0/0= x340 > > > > > 14640.413010=C2=A8 <000000000063303e>=C2=A8 __schedule+0xa22/0xa= f0 > > > > > 14640.428279=C2=A8 <0000000000630da6>=C2=A8 schedule_timeout+0x1= 86/0x2c0 > > > > > 14640.428289=C2=A8 <00000000001cf864>=C2=A8 rcu_gp_kthread+0x1bc= /0x298 > > > > > 14640.428300=C2=A8 <0000000000158c5a>=C2=A8 kthread+0xe6/0xec > > > > > 14640.428304=C2=A8 <0000000000634de6>=C2=A8 kernel_thread_starte= r+0x6/0xc > > > > > 14640.428308=C2=A8 <0000000000634de0>=C2=A8 kernel_thread_starte= r+0x0/0xc > > > > > 14640.428311=C2=A8 Last Breaking-Event-Address: > > > > > 14640.428314=C2=A8 <000000000016bd76>=C2=A8 walk_tg_tree_from+0x= 3a/0xf4 > > > > > 14640.428319=C2=A8 list_add corruption. next->prev should be pre= v > > > > > (0000000000000918 > > > > > ), but was (null). (next=3D (null)). > > > >=20 > > > > Where's XFS in this? walk_tg_tree_from() is part of the scheduler > > > > code. This kind of implies a stack corruption.... > > > >=20 > > > > > Sometimes, this pops up, > > > > > [16907.275002] WARNING: at kernel/rcutree.c:1960 > > > > >=20 > > > > > or this, > > > > > 15316.154171=C2=A8 XFS (dm-1): Mounting Filesystem > > > > > 15316.255796=C2=A8 XFS (dm-1): Ending clean mount > > > > > 15320.364246=C2=A8 00000000006367a2: e310b0080004 = lg > > > > > %r1,8(%r > > > > > 11) > > > > > 15320.364249=C2=A8 00000000006367a8: 41101010 = la > > > > > %r1,16(% > > > > > r1) > > > > > 15320.364251=C2=A8 00000000006367ac: e33010000004 = lg > > > > > %r3,0(%r > > > > > 1) > > > > > 15320.364252=C2=A8 Call Trace: > > > > > 15320.364252=C2=A8 Last Breaking-Event-Address: > > > > > 15320.364253=C2=A8 =EF=BF=BD <0000000000000000>=C2=A8 Kernel sta= ck overflow. > > > > > 15320.364308=C2=A8 CPU: 0 Tainted: GF W 3.9.2 #1 > > > > > 15320.364309=C2=A8 Process rhts-test-runne (pid: 625, task: > > > > > 000000003dccc890, > > > > > ksp: 0 > > > >=20 > > > > .... and there you go - a stack overflow. Your kernel stack size is > > > > too small. > > > >=20 > > > > I'd suggest that you need 16k stacks on s390 - IIRC every function > > > > call has 128 byte stack frame, and there are call chains 70-80 > > > > functions deep in the storage stack... > > > Hmm, I am unsure how to set to 16k stack there > >=20 > > Are you build a 64 bit s390 kernel or a 32 bit kernel? 32 bit > > kernels only have an 8k stack size, 64 bit kernels are 16k (see > > arch/s390/Makefile). > >=20 > > $ git grep STACK_SIZE arch/s390 |head -2 > > arch/s390/Makefile:STACK_SIZE :=3D 8192 > > arch/s390/Makefile:STACK_SIZE :=3D 16384 > >=20 > > As it is, the stack frame usage is worse than I thought: > >=20 > > $ git grep STACK_FRAME_OVERHEAD arch/s390 |head -2 > > arch/s390/include/uapi/asm/ptrace.h:#define STACK_FRAME_OVERHEAD 96 = /* > > size of minimum stack frame */ > > arch/s390/include/uapi/asm/ptrace.h:#define STACK_FRAME_OVERHEAD 160 > > /* > > size of minimum stack frame */ > >=20 > > Overhead is 96 bytes for 32 bit and 160 bytes for 64 bit. So 16k > > stack size is going to have big troubles with a 70-80 function deep > > call chain. > >=20 > > As for powerpc: > >=20 > > arch/powerpc/include/asm/ppc_asm.h:#define STACKFRAMESIZE 256 > >=20 > > Yeah, same issue. > >=20 > > But, seriously, these stack traces are meaningless to anyone not > > familiar with s390 or power7 - they indicate a problem detected > > in the idle loop, not where ever the stack overran. > >=20 > > Can you please work with the s390/power7 people to obtain whatever > > stack it was that overflowed, and we can go from there. > >=20 > > Cheers, > >=20 > > Dave. > > -- > > Dave Chinner > > david@fromorbit.com > >=20 >=20 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760008Ab3EXDdu (ORCPT ); Thu, 23 May 2013 23:33:50 -0400 Received: from mx4-phx2.redhat.com ([209.132.183.25]:47657 "EHLO mx4-phx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759596Ab3EXDdq convert rfc822-to-8bit (ORCPT ); Thu, 23 May 2013 23:33:46 -0400 Date: Thu, 23 May 2013 23:33:39 -0400 (EDT) From: CAI Qian To: linux-s390 , linuxppc-dev@lists.ozlabs.org Cc: LKML , stable@vger.kernel.org, xfs@oss.sgi.com, Steve Best , Hendrik Brueckner , Dave Chinner Message-ID: <806463874.5711876.1369366419059.JavaMail.root@redhat.com> In-Reply-To: <1125086079.5019070.1369285040855.JavaMail.root@redhat.com> References: <40971621.4497871.1369211701112.JavaMail.root@redhat.com> <1805266998.4499261.1369211998387.JavaMail.root@redhat.com> <20130522095300.GK29466@dastard> <1483868349.4996990.1369279016162.JavaMail.root@redhat.com> <20130523034611.GX24543@dastard> <1125086079.5019070.1369285040855.JavaMail.root@redhat.com> Subject: Re: 3.9.2/3.9.3: stack overrun on s390x and ppc64 (WAS Re: 3.9.2: xfstests triggered panic) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT X-Originating-IP: [10.5.82.11] X-Mailer: Zimbra 8.0.3_GA_5664 (ZimbraWebClient - FF20 (Linux)/8.0.3_GA_5664) Thread-Topic: 3.9.2/3.9.3: stack overrun on s390x and ppc64 (WAS Re: 3.9.2: xfstests triggered panic) Thread-Index: UrqmsS7Y5wTYDzl3iTO6fgrXyEgS3liyEEZW Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org OK, here is clearer stack output from the run. CAI Qian + ./check FSTYP -- xfs (non-debug) PLATFORM -- Linux/s390x ibm-z10-23 3.9.3 001 29s 002 3s 003 2s 004 [not run] this test requires a valid $SCRATCH_DEV 005 2s 006 9s 007 10s 008 7s 009 [not run] this test requires a valid $SCRATCH_DEV 010 [not run] dbtest was not built for this platform 011 9s 012 10s 013 35s 014 5s 015 [not run] this test requires a valid $SCRATCH_DEV 016 [not run] this test requires a valid $SCRATCH_DEV 017 [not run] this test requires a valid $SCRATCH_DEV 018 [not run] this test requires a valid $SCRATCH_DEV 019 [not run] this test requires a valid $SCRATCH_DEV 020 [ 1316.571227] XFS (dm-0): Mounting Filesystem [ 1316.697803] XFS (dm-0): Ending clean mount [ 1318.080615] XFS (dm-0): Ending clean mount [ 1348.791125] XFS (dm-0): Mounting Filesystem [ 1348.989166] XFS (dm-0): Ending clean mount [ 1353.335478] XFS (dm-0): Mounting Filesystem [ 1353.496364] XFS (dm-0): Ending clean mount [ 1357.495427] XFS (dm-0): Mounting Filesystem [ 1357.676971] XFS (dm-0): Ending clean mount [ 1361.646399] XFS (dm-0): Mounting Filesystem [ 1361.890426] XFS (dm-0): Ending clean mount [ 1371.798944] XFS (dm-0): Mounting Filesystem [ 1371.976922] XFS (dm-0): Ending clean mount [ 1384.559103] XFS (dm-0): Mounting Filesystem [ 1384.725657] XFS (dm-0): Ending clean mount [ 1393.131347] XFS (dm-0): Mounting Filesystem [ 1393.357927] XFS (dm-0): Ending clean mount [ 1407.282708] XFS (dm-0): Mounting Filesystem [ 1407.745176] XFS (dm-0): Ending clean mount [ 1422.927074] XFS (dm-0): Mounting Filesystem [ 1423.136266] XFS (dm-0): Ending clean mount [ 1425.500910] XFS (dm-0): Mounting Filesystem [ 1425.608851] XFS (dm-0): Ending clean mount [ 1450.978110] XFS (dm-0): Mounting Filesystem [ 1451.255368] XFS (dm-0): Ending clean mount [ 1453.603742] XFS (dm-0): Mounting Filesystem [ 1453.680657] XFS (dm-0): Ending clean mount [ 1456.262266] XFS (dm-0): Mounting Filesystem [ 1456.330515] XFS (dm-0): Ending clean mount [ 1457.053767] XFS (dm-0): Mounting Filesystem [ 1457.107258] XFS (dm-0): Ending clean mount [ 1462.049374] XFS (dm-0): Mounting Filesystem [ 1462.111389] XFS (dm-0): Ending clean mount [ 1471.109589] ODEBUG: deactivate not available (active state 0) object type: ti mer_list hint: process_timeout+0x0/0x8 [ 1471.109683] ------------[ cut here ]------------ [ 1471.109688] WARNING: at lib/debugobjects.c:260 [ 1471.109692] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_ns(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable_nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtables(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth_l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F) dm_l og(F) dm_mod(F) [ 1471.109848] CPU: 0 Tainted: GF 3.9.3 #2 [ 1471.109858] Process swapper/0 (pid: 0, task: 0000000000a2b4d0, ksp: 000000000 0a17d28) [ 1471.109868] Krnl PSW : 0404c00180000000 000000000046c84a (debug_print_object+ 0xca/0xd8) [ 1471.114762] R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 EA: 3 Krnl GPRS: 0000000000000000 0000000000a2b4d0 0000000000000067 000000000101f708 [ 1471.114769] 000000000046c846 0000000084a4d448 000000000086936a 000 0000001040700 [ 1471.114773] 0000000001a0f290 0400000000000001 0000000000874cf8 000 0000000a395d8 [ 1471.114777] 000000000195f820 000000000001bd20 000000000046c846 000 000000001bc20 [ 1471.114792] Krnl Code: 000000000046c83a: e34410000004 lg %r4,0(%r 4,%r1) 000000000046c840: c0e500139f88 brasl %r14,6e0750 #000000000046c846: a7f40001 brc 15,46c848 >000000000046c84a: a7f4ffc2 brc 15,46c7ce 000000000046c84e: a7290000 lghi %r2,0 000000000046c852: a7f4ffd7 brc 15,46c800 000000000046c856: 0707 bcr 0,%r7 000000000046c858: ebaff0680024 stmg %r10,%r15,104(%r15) [ 1471.114825] Call Trace: [ 1471.114828] ([<000000000046c846>] debug_print_object+0xc6/0xd8) [ 1471.114833] [<000000000046d35c>] debug_object_deactivate+0x15c/0x160 [ 1471.114838] [<0000000000148244>] run_timer_softirq+0x180/0x464 [ 1471.114843] [<000000000013d8d6>] __do_softirq+0x112/0x42c [ 1471.114847] [<000000000013ddf8>] irq_exit+0xc8/0xe8 [ 1471.114851] [<000000000010d55e>] do_extint+0x25e/0x318 [ 1471.114859] [<00000000006f0d90>] ext_skip+0x40/0x44 [ 1471.114866] [<00000000006f05d6>] vtime_stop_cpu+0x52/0xbc [ 1471.114870] ([<00000000006f05b4>] vtime_stop_cpu+0x30/0xbc) [ 1471.114874] [<000000000010476e>] cpu_idle+0x112/0x1b8 [ 1471.114879] [<0000000000aaf99a>] start_kernel+0x42e/0x43c [ 1471.114885] [<0000000000100020>] _stext+0x20/0x80 [ 1471.114891] 2 locks held by swapper/0/0: [ 1471.114894] #0: (&(&base->lock)->rlock){-.-.-.}, at: [<0000000000148128>] r un_timer_softirq+0x64/0x464 [ 1471.114908] #1: (&obj_hash[i].lock){-.-.-.}, at: [<000000000046d2ba>] debug _object_deactivate+0xba/0x160 [ 1471.114918] Last Breaking-Event-Address: [ 1471.114921] [<000000000046c846>] debug_print_object+0xc6/0xd8 [ 1471.114927] ---[ end trace dd87895f75677361 ]--- [ 1471.117683] ODEBUG: object is on stack, but not annotated [ 1471.117723] ------------[ cut here ]------------ [ 1471.117726] WARNING: at lib/debugobjects.c:300 [ 1471.117729] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_ns(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable_nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtables(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth_l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F) dm_l og(F) dm_mod(F) [ 1471.117791] CPU: 0 Tainted: GF W 3.9.3 #2 [ 1471.117794] Process rcu_sched (pid: 10, task: 00000000fffe8000, ksp: 00000000 fffe7ae0) [ 1471.117797] Krnl PSW : 0404c00180000000 000000000046ccce (__debug_object_init +0x35a/0x480) [ 1471.117804] R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 EA: 3 Krnl GPRS: 0000000000000000 00000000fffe8000 000000000000002d 000000000101f708 [ 1471.117811] 000000000046ccca 0000000000000001 0000000000a395d8 070 0000000000000 [ 1471.117814] 0000000000a78750 0000000001a0f298 00000000fffe7cf0 000 00000f8daa938 [ 1471.117818] 0000000001a0f290 00000000007434c0 000000000046ccca 00 00000fffe7a40 [ 1471.117852] Krnl Code: 000000000046ccbe: c02000217617 larl %r2,89b8 ec 000000000046ccc4: c0e500139d46 brasl %r14,6e0750 #000000000046ccca: a7f40001 brc 15,46cccc >000000000046ccce: a7f4ff03 brc 15,46cad4 000000000046ccd2: a7380000 lhi %r3,0 000000000046ccd6: a7f4ffe9 brc 15,46cca8 000000000046ccda: c02000217622 larl %r2,89b91e 000000000046cce0: c0e500139d38 brasl %r14,6e0750 [ 1471.117884] Call Trace: [ 1471.117887] ([<000000000046ccca>] __debug_object_init+0x356/0x480) [ 1471.117891] [<0000000000146f42>] init_timer_key+0x3a/0x164 [ 1471.117897] [<0000000000147eac>] timer_fixup_assert_init+0x50/0xa8 [ 1471.117901] [<000000000046d7a4>] debug_object_assert_init+0x124/0x154 [ 1471.117906] [<0000000000148676>] try_to_del_timer_sync+0x2e/0x94 [ 1471.117910] [<000000000014878e>] del_timer_sync+0xb2/0x104 [ 1471.117915] [<00000000006ea950>] schedule_timeout+0x190/0x37c [ 1471.117922] [<00000000001f1118>] rcu_gp_kthread+0x320/0x59c [ 1471.117927] [<0000000000164176>] kthread+0xe6/0xec [ 1471.117934] [<00000000006f0906>] kernel_thread_starter+0x6/0xc [ 1471.117938] [<00000000006f0900>] kernel_thread_starter+0x0/0xc [ 1471.117943] 1 lock held by rcu_sched/10: [ 1471.117945] #0: (&obj_hash[i].lock){-.-.-.}, at: [<000000000046caba>] __deb ug_object_init+0x146/0x480 [ 1471.117955] Last Breaking-Event-Address: [ 1471.117958] [<000000000046ccca>] __debug_object_init+0x356/0x480 [ 1471.117962] ---[ end trace dd87895f75677362 ]--- [ 1471.117967] ODEBUG: assert_init not available (active state 0) object type: t imer_list hint: stub_timer+0x0/0x8 [ 1471.117984] ------------[ cut here ]------------ [ 1471.117987] WARNING: at lib/debugobjects.c:260 [ 1471.117990] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_ns(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable_nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtables(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth_l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F) dm_l og(F) dm_mod(F) [ 1471.118053] CPU: 0 Tainted: GF W 3.9.3 #2 [ 1471.118075] Process rcu_sched (pid: 10, task: 00000000fffe8000, ksp: 00000000 fffe7ae0) [ 1471.118079] Krnl PSW : 0704e00180000000 000000000046c84a (debug_print_object+ 0xca/0xd8) [ 1471.118085] R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 EA: 3 Krnl GPRS: 0000000000000000 00000000fffe8000 0000000000000063 0000000000000001 [ 1471.118092] 000000000046c846 0000000000000001 000000000086936a 000 0000000a1d300 [ 1471.118095] 0000000001a0f290 07000000006ed3fc 000000000089ba14 000 0000000a395d8 [ 1471.118099] 000000000195f820 00000000fffe7bc8 000000000046c846 000 00000fffe7ac8 [ 1471.118109] Krnl Code: 000000000046c83a: e34410000004 lg %r4,0(%r 4,%r1) 000000000046c840: c0e500139f88 brasl %r14,6e0750 #000000000046c846: a7f40001 brc 15,46c848 >000000000046c84a: a7f4ffc2 brc 15,46c7ce 000000000046c84e: a7290000 lghi %r2,0 000000000046c852: a7f4ffd7 brc 15,46c800 000000000046c856: 0707 bcr 0,%r7 000000000046c858: ebaff0680024 stmg %r10,%r15,104(%r15) [ 1471.118141] Call Trace: [ 1471.118144] ([<000000000046c846>] debug_print_object+0xc6/0xd8) [ 1471.118149] [<000000000046d7ce>] debug_object_assert_init+0x14e/0x154 [ 1471.118153] [<0000000000148676>] try_to_del_timer_sync+0x2e/0x94 [ 1471.118158] [<000000000014878e>] del_timer_sync+0xb2/0x104 [ 1471.118163] [<00000000006ea950>] schedule_timeout+0x190/0x37c [ 1471.118167] [<00000000001f1118>] rcu_gp_kthread+0x320/0x59c [ 1471.118172] [<0000000000164176>] kthread+0xe6/0xec [ 1471.118176] [<00000000006f0906>] kernel_thread_starter+0x6/0xc [ 1471.118180] [<00000000006f0900>] kernel_thread_starter+0x0/0xc [ 1471.118185] no locks held by rcu_sched/10. [ 1471.118188] Last Breaking-Event-Address: [ 1471.118190] [<000000000046c846>] debug_print_object+0xc6/0xd8 [ 1471.118195] ---[ end trace dd87895f75677363 ]--- [ 1471.121980] Unable to handle kernel pointer dereference at virtual kernel add ress 000003ff8072c000 [ 1471.123714] Oops: 0011 [#1] SMP [ 1471.123720] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_ns(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable_nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtables(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth_l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F) dm_l og(F) dm_mod(F) [ 1471.123777] CPU: 0 Tainted: GF W 3.9.3 #2 [ 1471.123781] Process systemd-journal (pid: 516, task: 00000000f5ad8000, ksp: 0 0000000f544fbd0) [ 1471.123784] Krnl PSW : 0704e00180000000 000003ff80749cc2 (xfs_vm_page_mkwrite +0x12/0x1c [xfs]) [ 1471.154773] R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 EA: 3 Krnl GPRS: 00000000000015e8 000003ff8072cc30 0000000000000001 0000000000000000 [ 1471.154781] 00000000006ef176 00000000007036b8 00000000f97b7d98 000 003fffb3e7000 [ 1471.154784] 000003fffb3e7000 00000000f8f65a00 00000000f8472738 000 00000f8ffc2c0 [ 1471.154788] 00000000f8472738 000000000070d5e0 000003ff80749cb6 000 00000f544fc28 [ 1471.154802] Krnl Code: 000003ff80749cb6: 1222 ltr %r2,%r2 000003ff80749cb8: a784ffd8 brc 8,3ff80749c68 #000003ff80749cbc: c010ffff17ba larl %r1,3ff8072cc30 >000003ff80749cc2: e31010000004 lg %r1,0(%r1) 000003ff80749cc8: e32010000012 lt %r2,0(%r1) 000003ff80749cce: a7740032 brc 7,3ff80749d32 000003ff80749cd2: e31003180004 lg %r1,792 000003ff80749cd8: e330101c0012 lt %r3,28(%r1) [ 1471.154838] Call Trace: [ 1471.154841] ([<0000000000261870>] do_wp_page+0x6f8/0xa4c) [ 1471.154851] [<0000000000262f2c>] handle_pte_fault+0x65c/0xa10 [ 1471.154856] [<0000000000264a22>] handle_mm_fault+0x182/0x260 [ 1471.154860] [<00000000006f21d0>] do_protection_exception+0x1b8/0x3cc [ 1471.154867] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.154871] [<000000008001d60a>] 0x8001d60a [ 1471.154894] INFO: lockdep is turned off. [ 1471.154897] Last Breaking-Event-Address: [ 1471.154899] [<00000000001ed7ca>] rcu_lockdep_current_cpu_online+0x6e/0x84 [ 1471.154909] [ 1471.154913] ---[ end trace dd87895f75677364 ]--- [ 1471.157438] ------------[ cut here ]------------ [ 1471.157446] Kernel BUG at 00000000006eb186 [verbose debug info unavailable] [ 1471.157508] addressing exception: 0005 [#2] SMP [ 1471.157514] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_ns(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable_nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtables(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth_l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F) dm_l og(F) dm_mod(F) [ 1471.157574] CPU: 0 Tainted: GF D W 3.9.3 #2 [ 1471.157577] Process systemd-journal (pid: 516, task: 00000000f5ad8000, ksp: 0 0000000f544f578) [ 1471.157580] Krnl PSW : 0404d00180000000 00000000006eb186 (mutex_lock_nested+0 xde/0x36c) [ 1471.157591] R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 EA: 3 Krnl GPRS: 000000000000166e 0000000000000000 00000000ffffffff 0000000000a78630 [ 1471.157597] 0000000000000000 0000000000000000 0000000000000002 000 00000100073f8 [ 1471.157601] 00000000f5ad8000 000000000101f708 0000000000000000 070 0000000000000 [ 1471.157604] 0000000010007388 0000000010007380 00000000006eb170 000 00000f544f658 [ 1471.157616] Krnl Code: 00000000006eb178: a7180000 lhi %r1,0 00000000006eb17c: c027ffffffff xilf %r2,4294967295 #00000000006eb182: ba12d008 cs %r1,%r2,8(%r13) >00000000006eb186: 1211 ltr %r1,%r1 00000000006eb188: a774011b brc 7,6eb3be 00000000006eb18c: e31090000012 lt %r1,0(%r9) 00000000006eb192: a7740007 brc 7,6eb1a0 00000000006eb196: e3d0d0700020 cg %r13,112(%r13) [ 1471.157650] Call Trace: [ 1471.157652] ([<00000000006eb170>] mutex_lock_nested+0xc8/0x36c) [ 1471.157657] [<0000000000260e3e>] unmap_single_vma+0x786/0x7d0 [ 1471.157663] [<000000000026219c>] unmap_vmas+0x50/0x74 [ 1471.157666] [<000000000026b7aa>] exit_mmap+0x186/0x224 [ 1471.157671] [<000000000012ef88>] mmput+0x84/0x110 [ 1471.157677] [<0000000000139fd2>] do_exit+0x2c6/0xce8 [ 1471.157682] [<0000000000100ef2>] die+0x13e/0x158 [ 1471.157687] [<000000000011dd6e>] do_no_context+0xba/0xf0 [ 1471.157692] [<00000000006f2714>] do_dat_exception+0x330/0x390 [ 1471.157697] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.157701] [<000003ff80749cc2>] xfs_vm_page_mkwrite+0x12/0x1c [xfs] [ 1471.157800] ([<0000000000261870>] do_wp_page+0x6f8/0xa4c) [ 1471.157805] [<0000000000262f2c>] handle_pte_fault+0x65c/0xa10 [ 1471.157809] [<0000000000264a22>] handle_mm_fault+0x182/0x260 [ 1471.157813] [<00000000006f21d0>] do_protection_exception+0x1b8/0x3cc [ 1471.157817] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.157821] [<000000008001d60a>] 0x8001d60a [ 1471.157827] INFO: lockdep is turned off. [ 1471.157829] Last Breaking-Event-Address: [ 1471.157832] [<00000000001af490>] trace_hardirqs_off_caller+0x7c/0xb0 [ 1471.157840] [ 1471.157857] ---[ end trace dd87895f75677365 ]--- [ 1471.157863] Fixing recursive fault but reboot is needed! [ 1471.157867] BUG: scheduling while atomic: systemd-journal/516/0x00000002 [ 1471.157870] INFO: lockdep is turned off. [ 1471.157872] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_ns(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable_nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtables(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth_l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F) dm_l og(F) dm_mod(F) [ 1471.157928] CPU: 0 Tainted: GF D W 3.9.3 #2 [ 1471.157931] Process systemd-journal (pid: 516, task: 00000000f5ad8000, ksp: 0 0000000f544f578) [ 1471.157934] 00000000f544f168 00000000f544f178 0000000000000002 0000000 000000000 00000000f544f208 00000000f544f180 00000000f544f180 0000000000100a1e 0000000000000000 0000000000ffb000 000000000000000a 000000000000000a 00000000f544f1c8 00000000f544f168 0000000000000000 0000000000000000 00000000f5ad8000 0000000000100a1e 00000000f544f168 00000000f544f1b8 [ 1471.157966] Call Trace: [ 1471.157968] ([<0000000000100920>] show_trace+0xf0/0x148) [ 1471.157973] [<00000000006e0e88>] __schedule_bug+0x80/0x98 [ 1471.157977] [<00000000006ed9ea>] __schedule+0xc6a/0xcc8 [ 1471.157981] [<000000000013a99e>] do_exit+0xc92/0xce8 [ 1471.157985] [<0000000000100ef2>] die+0x13e/0x158 [ 1471.157990] [<00000000006f02ac>] do_per_trap+0x0/0xb4 [ 1471.157993] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.157997] [<00000000006eb186>] mutex_lock_nested+0xde/0x36c [ 1471.158002] ([<00000000006eb170>] mutex_lock_nested+0xc8/0x36c) [ 1471.158006] [<0000000000260e3e>] unmap_single_vma+0x786/0x7d0 [ 1471.158010] [<000000000026219c>] unmap_vmas+0x50/0x74 [ 1471.158014] [<000000000026b7aa>] exit_mmap+0x186/0x224 [ 1471.158018] [<000000000012ef88>] mmput+0x84/0x110 [ 1471.158021] [<0000000000139fd2>] do_exit+0x2c6/0xce8 [ 1471.158025] [<0000000000100ef2>] die+0x13e/0x158 [ 1471.158029] [<000000000011dd6e>] do_no_context+0xba/0xf0 [ 1471.158033] [<00000000006f2714>] do_dat_exception+0x330/0x390 [ 1471.158037] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.158041] [<000003ff80749cc2>] xfs_vm_page_mkwrite+0x12/0x1c [xfs] [ 1471.158070] ([<0000000000261870>] do_wp_page+0x6f8/0xa4c) [ 1471.158074] [<0000000000262f2c>] handle_pte_fault+0x65c/0xa10 [ 1471.158078] [<0000000000264a22>] handle_mm_fault+0x182/0x260 [ 1471.158082] [<00000000006f21d0>] do_protection_exception+0x1b8/0x3cc [ 1471.158086] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.158090] [<000000008001d60a>] 0x8001d60a [ 1471.158094] INFO: lockdep is turned off. [ 1471.158221] Unable to handle kernel paging request at virtual user address (null) [ 1471.158247] Oops: 0004 [#3] SMP [ 1471.158251] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_ns(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable_nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtables(F) ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) sg(F) qeth_l2(F ) vmur(F) xfs(F) libcrc32c(F) dasd_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_mod(F ) ctcm(F) qeth(F) qdio(F) ccwgroup(F) fsm(F) dm_mirror(F) dm_region_hash(F) dm_l og(F) dm_mod(F) [ 1471.158306] CPU: 0 Tainted: GF D W 3.9.3 #2 [ 1471.158309] Process in:imklog (pid: 765, task: 00000000fc7f2430, ksp: 0000000 0fc36fd50) [ 1471.158312] Krnl PSW : 0404e00180000000 0000000000183520 (tg_load_down+0x60/0 xb0) [ 1471.158320] R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 EA: 3 Krnl GPRS: 0000000000000040 0000000000000000 0000000000000000 0000000000000008 [ 1471.158327] 0000000000000000 0000000000000000 00000000f9253400 000 0000000aa0854 [ 1471.158330] 0000000000aa0852 00000000001834c0 0000000000170edc 000 0000000000000 [ 1471.158333] 00000000f9187e00 00000000fcd5c800 000000000017a330 000 00000fc36fb48 [ 1471.158343] Krnl Code: 0000000000183512: a7290000 lghi %r2,0 0000000000183516: e31310000004 lg %r1,0(%r3,%r1) #000000000018351c: b9040045 lgr %r4,%r5 >0000000000183520: e34010980024 stg %r4,152(%r1) 0000000000183526: ebbcf0700004 lmg %r11,%r12,112(%r15) 000000000018352c: 07fe bcr 15,%r14 000000000018352e: eb430003000d sllg %r4,%r3,3 0000000000183534: c05000451512 larl %r5,a25f58 [ 1471.158377] Call Trace: [ 1471.158380] ([<000000000018bd96>] load_balance+0x236/0xc7c) [ 1471.158385] [<000000000018be16>] load_balance+0x2b6/0xc7c [ 1471.158389] [<000000000018d0a2>] idle_balance+0x212/0x494 [ 1471.158393] [<00000000006ed9ae>] __schedule+0xc2e/0xcc8 [ 1471.158397] [<00000000006f0c30>] io_reschedule+0xa/0x1a [ 1471.158402] [<000003fffd3bea22>] 0x3fffd3bea22 [ 1471.158406] INFO: lockdep is turned off. [ 1471.158408] Last Breaking-Event-Address: [ 1471.158411] [<000000000017a32e>] walk_tg_tree_from+0x46/0x190 [ 1471.158416] [ 1471.158418] ---[ end trace dd87895f75677366 ]--- [ 1471.158423] BUG: sleeping function called from invalid context at kernel/rwse m.c:20 [ 1471.158426] in_atomic(): 1, irqs_disabled(): 0, pid: 765, name: in:imklog [ 1471.158429] INFO: lockdep is turned off. [ 1471.158432] CPU: 0 Tainted: GF D W 3.9.3 #2 [ 1471.158435] Process in:imklog (pid: 765, task: 00000000fc7f2430, ksp: 0000000 0fc36fd50) [ 1471.158438] 00000000fc36f690 00000000fc36f6a0 0000000000000002 0000000 000000000 00000000fc36f730 00000000fc36f6a8 00000000fc36f6a8 0000000000100a1e 0000000000000000 00000000fc7f2870 000000000000000a 0404e0010000000a 00000000fc36f6f0 00000000fc36f690 0000000000000000 0000000000000000 00000000006fdbc8 0000000000100a1e 00000000fc36f690 00000000fc36f6e0 [ 1471.158470] Call Trace: [ 1471.158473] ([<0000000000100920>] show_trace+0xf0/0x148) [ 1471.158477] [<0000000000175c0a>] __might_sleep+0x17a/0x238 [ 1471.158482] [<00000000006ec4de>] down_read+0x42/0xe0 [ 1471.158487] [<000000000014fea0>] exit_signals+0x38/0x144 [ 1471.158492] [<0000000000139dd6>] do_exit+0xca/0xce8 [ 1471.158496] [<0000000000100ef2>] die+0x13e/0x158 [ 1471.158500] [<000000000011dd6e>] do_no_context+0xba/0xf0 [ 1471.158504] [<00000000006f23de>] do_protection_exception+0x3c6/0x3cc [ 1471.158508] [<00000000006f0a44>] pgm_check_handler+0x138/0x13c [ 1471.158513] [<0000000000183520>] tg_load_down+0x60/0xb0 [ 1471.158517] ([<000000000018bd96>] load_balance+0x236/0xc7c) [ 1471.158521] [<000000000018be16>] load_balance+0x2b6/0xc7c [ 1471.158525] [<000000000018d0a2>] idle_balance+0x212/0x494 [ 1471.158529] [<00000000006ed9ae>] __schedule+0xc2e/0xcc8 [ 1471.158533] [<00000000006f0c30>] io_reschedule+0xa/0x1a [ 1471.158537] [<000003fffd3bea22>] 0x3fffd3bea22 [ 1471.158541] INFO: lockdep is turned off. [ 1471.158545] note: in:imklog[765] exited with preempt_count 3 [ 1573.704911] Unable to handle kernel pointer dereference at virtual kernel add ress 00c040077ff00000 [ 1573.705014] Oops: 0038 [#4] SMP [ 1573.705029] Modules linked in: lockd(F) sunrpc(F) nf_conntrack_netbios_ns(F) nf_conntrack_broadcast(F) ipt_MASQUERADE(F) ip6table_nat(F) nf_nat_ipv6(F) ip6ta ble_mangle(F) ip6t_REJECT(F) nf_conntrack_ipv6(F) nf_defrag_ipv6(F) iptable_nat( F) nf_nat_ipv4(F) nf_nat(F) iptable_mangle(F) ipt_REJECT(F) nf_conntrack_ipv4(F) nf_defrag_ipv4(F) xt_conntrack(F) nf_conntrack(F) ebtable_filter(F) ebtables(F) ip6table_filter(F) ip6_tables(F)00: HCPGSP2629I The virtual machine is placed i n CP mode due to a SIGP stop from CPU 01. iptable_filter(F) ip_tables(F) sg(F) qeth_l2(F) vmur(F) xfs(F) libcrc32c(F) das d_fba_mod(F) dasd_eckd_mod(F) lcs(F) dasd_mod(F) ctcm(F) qeth(F) qdio(F) ccwgrou p(F) fsm(F) dm_mirror(F) dm_region_hash(F) dm_log(F) dm_mod(F) [ 1573.705173] CPU: 1 Tainted: GF D W 3.9.3 #2 [ 1573.705177] Process attr (pid: 22262, task: 00000000b1190000, ksp: 00000000b0 f43eb0) [ 1573.705180] Krnl PSW : 0404e00180000000 000000000046c738 (lookup_object+0x20/ 0x68) [ 1573.705193] R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 EA: 3 Krnl GPRS: 7440000000000000 00c040077ff000e8 00000000fadd1eb8 0000000000000003 [ 1573.705199] 000000000046d2ba 0000000000000000 0000000084c1a828 000 0000084c1a868 [ 1573.705203] 0000000001964250 04000000001b5d64 0000000000a3bdf8 000 0000001964258 [ 1573.705206] 00000000fadd1eb8 00000000007434f0 000000000046d2cc 000 00000feb0b488 [ 1573.705221] Krnl Code: 000000000046c72c: a7380001 lhi %r3,1 000000000046c730: a7f40009 brc 15,46c742 #000000000046c734: a73a0001 ahi %r3,1 >000000000046c738: e32010180020 cg %r2,24(%r1) 000000000046c73e: a7840016 brc 8,46c76a 000000000046c742: e31010000002 ltg %r1,0(%r1) 000000000046c748: a774fff6 brc 7,46c734 000000000046c74c: c010002dcfc0 larl %r1,a266cc [ 1573.705254] Call Trace: [ 1573.705257] ([<000000000046d2ba>] debug_object_deactivate+0xba/0x160) [ 1573.705263] [<0000000000168890>] __run_hrtimer+0x58/0x474 [ 1573.705269] [<0000000000169af2>] hrtimer_interrupt+0x116/0x2b0 [ 1573.705273] [<0000000000104036>] clock_comparator_work+0x4a/0x54 [ 1573.705279] [<000000000010d5b4>] do_extint+0x2b4/0x318 [ 1573.705285] [<00000000006f0d90>] ext_skip+0x40/0x44 [ 1573.705292] [<000003ff80108ba4>] ipt_do_table+0x298/0x8d0 [ip_tables] [ 1573.705300] ([<000003ff801089d2>] ipt_do_table+0xc6/0x8d0 [ip_tables]) [ 1573.705305] [<000003ff80165318>] nf_nat_ipv4_fn+0x1b4/0x354 [iptable_nat] [ 1573.705310] [<000003ff80165598>] nf_nat_ipv4_in+0x38/0x98 [iptable_nat] [ 1573.705314] [<00000000005d047c>] nf_iterate+0xd4/0x1b0 [ 1573.705903] [<00000000005d0680>] nf_hook_slow+0x128/0x2cc [ 1573.705909] [<00000000005de956>] ip_rcv+0x272/0x360 [ 1573.705914] [<0000000000592af6>] __netif_receive_skb_core+0xac2/0xe70 [ 1573.705919] [<00000000005957e4>] netif_receive_skb+0x48/0x260 [ 1573.705924] [<000003ff80095d16>] qeth_l2_poll+0x30a/0x540 [qeth_l2] [ 1573.705938] [<0000000000595f58>] net_rx_action+0x158/0x340 [ 1573.705942] [<000000000013d8d6>] __do_softirq+0x112/0x42c [ 1573.705947] [<000000000013ddf8>] irq_exit+0xc8/0xe8 [ 1573.705951] [<000000000010d55e>] do_extint+0x25e/0x318 [ 1573.705956] [<00000000006f0d90>] ext_skip+0x40/0x44 [ 1573.705961] [<000000000045a634>] memmove+0x14/0x5c [ 1573.705968] ([<000003ff807d7a10>] __func__.41994+0x10/0xffffffffffffb600 [xfs ]) [ 1573.706104] [<000003ff8076e6d2>] xfs_attr_leaf_compact+0xee/0x24c [xfs] [ 1573.706224] [<000003ff80772036>] xfs_attr_leaf_add+0x10a/0x268 [xfs] [ 1573.706272] [<000003ff8076a814>] xfs_attr_leaf_addname+0x11c/0x5a4 [xfs] [ 1573.706303] [<000003ff8076b028>] xfs_attr_set_int+0x38c/0x4b8 [xfs] [ 1573.706333] [<000003ff8076c9aa>] xfs_attr_set+0xb2/0xb8 [xfs] [ 1573.706363] [<000003ff8075d17e>] xfs_xattr_set+0x66/0xa0 [xfs] [ 1573.706393] [<00000000002d0a36>] generic_setxattr+0x7e/0x98 [ 1573.706400] [<00000000002d1430>] __vfs_setxattr_noperm+0x78/0x1dc [ 1573.706404] [<00000000002d1652>] vfs_setxattr+0xbe/0xc4 [ 1573.706408] [<00000000002d17b8>] setxattr+0x160/0x1c4 [ 1573.706412] [<00000000002d1ba0>] SyS_lsetxattr+0xac/0xe8 [ 1573.706416] [<00000000006f08b4>] sysc_tracego+0x14/0x1a [ 1573.706420] [<000003fffd2c2d1a>] 0x3fffd2c2d1a [ 1573.706427] INFO: lockdep is turned off. [ 1573.706430] Last Breaking-Event-Address: [ 1573.706433] [<000000000046c748>] lookup_object+0x30/0x68 [ 1573.706439] [ 1573.706443] Kernel panic - not syncing: Fatal exception in interrupt 01: HCPGIR450W CP entered; disabled wait PSW 00020001 80000000 00000000 0010F384 ----- Original Message ----- > From: "CAI Qian" > To: "linux-s390" , linuxppc-dev@lists.ozlabs.org > Cc: "LKML" , stable@vger.kernel.org, xfs@oss.sgi.com, "Steve Best" , > "Hendrik Brueckner" , "Dave Chinner" > Sent: Thursday, May 23, 2013 12:57:20 PM > Subject: 3.9.2/3.9.3: stack overrun on s390x and ppc64 (WAS Re: 3.9.2: xfstests triggered panic) > > Original report: > http://oss.sgi.com/archives/xfs/2013-05/msg00683.html > > Also seen on Power7: > http://marc.info/?l=linux-kernel&m=136927904900692&w=2 > > CAI Qian > > ----- Original Message ----- > > From: "Dave Chinner" > > To: "CAI Qian" > > Cc: "LKML" , stable@vger.kernel.org, > > xfs@oss.sgi.com > > Sent: Thursday, May 23, 2013 11:46:11 AM > > Subject: Re: 3.9.2: xfstests triggered panic > > > > On Wed, May 22, 2013 at 11:16:56PM -0400, CAI Qian wrote: > > > ----- Original Message ----- > > > > From: "Dave Chinner" > > > > To: "CAI Qian" > > > > Cc: "LKML" , stable@vger.kernel.org, > > > > xfs@oss.sgi.com > > > > Sent: Wednesday, May 22, 2013 5:53:00 PM > > > > Subject: Re: 3.9.2: xfstests triggered panic > > > > > > > > On Wed, May 22, 2013 at 04:39:58AM -0400, CAI Qian wrote: > > > > > Reproduced on almost all s390x guests by running xfstests. > > > > > > > > > > 14634.396658¨ XFS (dm-1): Mounting Filesystem > > > > > 14634.525522¨ XFS (dm-1): Ending clean mount > > > > > 14640.413007¨ <000000000017c6d4>¨ idle_balance+0x1a0/0x340 > > > > > 14640.413010¨ <000000000063303e>¨ __schedule+0xa22/0xaf0 > > > > > 14640.428279¨ <0000000000630da6>¨ schedule_timeout+0x186/0x2c0 > > > > > 14640.428289¨ <00000000001cf864>¨ rcu_gp_kthread+0x1bc/0x298 > > > > > 14640.428300¨ <0000000000158c5a>¨ kthread+0xe6/0xec > > > > > 14640.428304¨ <0000000000634de6>¨ kernel_thread_starter+0x6/0xc > > > > > 14640.428308¨ <0000000000634de0>¨ kernel_thread_starter+0x0/0xc > > > > > 14640.428311¨ Last Breaking-Event-Address: > > > > > 14640.428314¨ <000000000016bd76>¨ walk_tg_tree_from+0x3a/0xf4 > > > > > 14640.428319¨ list_add corruption. next->prev should be prev > > > > > (0000000000000918 > > > > > ), but was (null). (next= (null)). > > > > > > > > Where's XFS in this? walk_tg_tree_from() is part of the scheduler > > > > code. This kind of implies a stack corruption.... > > > > > > > > > Sometimes, this pops up, > > > > > [16907.275002] WARNING: at kernel/rcutree.c:1960 > > > > > > > > > > or this, > > > > > 15316.154171¨ XFS (dm-1): Mounting Filesystem > > > > > 15316.255796¨ XFS (dm-1): Ending clean mount > > > > > 15320.364246¨ 00000000006367a2: e310b0080004 lg > > > > > %r1,8(%r > > > > > 11) > > > > > 15320.364249¨ 00000000006367a8: 41101010 la > > > > > %r1,16(% > > > > > r1) > > > > > 15320.364251¨ 00000000006367ac: e33010000004 lg > > > > > %r3,0(%r > > > > > 1) > > > > > 15320.364252¨ Call Trace: > > > > > 15320.364252¨ Last Breaking-Event-Address: > > > > > 15320.364253¨ � <0000000000000000>¨ Kernel stack overflow. > > > > > 15320.364308¨ CPU: 0 Tainted: GF W 3.9.2 #1 > > > > > 15320.364309¨ Process rhts-test-runne (pid: 625, task: > > > > > 000000003dccc890, > > > > > ksp: 0 > > > > > > > > .... and there you go - a stack overflow. Your kernel stack size is > > > > too small. > > > > > > > > I'd suggest that you need 16k stacks on s390 - IIRC every function > > > > call has 128 byte stack frame, and there are call chains 70-80 > > > > functions deep in the storage stack... > > > Hmm, I am unsure how to set to 16k stack there > > > > Are you build a 64 bit s390 kernel or a 32 bit kernel? 32 bit > > kernels only have an 8k stack size, 64 bit kernels are 16k (see > > arch/s390/Makefile). > > > > $ git grep STACK_SIZE arch/s390 |head -2 > > arch/s390/Makefile:STACK_SIZE := 8192 > > arch/s390/Makefile:STACK_SIZE := 16384 > > > > As it is, the stack frame usage is worse than I thought: > > > > $ git grep STACK_FRAME_OVERHEAD arch/s390 |head -2 > > arch/s390/include/uapi/asm/ptrace.h:#define STACK_FRAME_OVERHEAD 96 /* > > size of minimum stack frame */ > > arch/s390/include/uapi/asm/ptrace.h:#define STACK_FRAME_OVERHEAD 160 > > /* > > size of minimum stack frame */ > > > > Overhead is 96 bytes for 32 bit and 160 bytes for 64 bit. So 16k > > stack size is going to have big troubles with a 70-80 function deep > > call chain. > > > > As for powerpc: > > > > arch/powerpc/include/asm/ppc_asm.h:#define STACKFRAMESIZE 256 > > > > Yeah, same issue. > > > > But, seriously, these stack traces are meaningless to anyone not > > familiar with s390 or power7 - they indicate a problem detected > > in the idle loop, not where ever the stack overran. > > > > Can you please work with the s390/power7 people to obtain whatever > > stack it was that overflowed, and we can go from there. > > > > Cheers, > > > > Dave. > > -- > > Dave Chinner > > david@fromorbit.com > > >