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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 4 Jun 2019 10:15:46 +0100 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x549FjjW58720350 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 4 Jun 2019 09:15:45 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9F347A405B; Tue, 4 Jun 2019 09:15:45 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4BD78A4054; Tue, 4 Jun 2019 09:15:44 +0000 (GMT) Received: from [9.109.244.70] (unknown [9.109.244.70]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 4 Jun 2019 09:15:44 +0000 (GMT) From: Sachin Sant Content-Type: multipart/mixed; boundary="Apple-Mail=_5062A1FE-9AB2-4A0A-92C2-DB3F6773A804" Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Subject: [POWERPC][next-20190603] Boot failure : Kernel BUG at mm/vmalloc.c:470 Date: Tue, 4 Jun 2019 14:45:43 +0530 Cc: linux-mm@kvack.org, "Uladzislau Rezki (Sony)" , linux-kernel@vger.kernel.org To: linuxppc-dev@lists.ozlabs.org, linux-next@vger.kernel.org X-Mailer: Apple Mail (2.3445.104.11) X-TM-AS-GCONF: 00 x-cbid: 19060409-4275-0000-0000-0000033C5452 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19060409-4276-0000-0000-0000384C6211 Message-Id: <9F9C0085-F8A4-4B66-802B-382119E34DF5@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-06-04_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=636 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906040061 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Apple-Mail=_5062A1FE-9AB2-4A0A-92C2-DB3F6773A804 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 While booting linux-next [next-20190603] on a POWER9 LPAR following BUG is encountered and the boot fails. If I revert the following 2 patches I no longer see this BUG message 07031d37b2f9 ( mm/vmalloc.c: switch to WARN_ON() and move it under = unlink_va() ) 728e0fbf263e ( mm/vmalloc.c: get rid of one single unlink_va() when = merge ) [ 1.130734] ------------[ cut here ]------------ [ 1.130745] kernel BUG at mm/vmalloc.c:470! [ 1.130753] Oops: Exception in kernel mode, sig: 5 [#1] [ 1.130761] LE PAGE_SIZE=3D64K MMU=3DHash SMP NR_CPUS=3D2048 NUMA = pSeries [ 1.130768] Modules linked in: ibmvscsi(+) ibmveth scsi_transport_srp [ 1.130781] CPU: 23 PID: 127 Comm: kworker/23:0 Not tainted = 5.2.0-rc3-next-20190603 #1 [ 1.130796] Workqueue: events do_free_init [ 1.130803] NIP: c0000000003bcc48 LR: c0000000003bcbc4 CTR: = c0000000003bc860 [ 1.130812] REGS: c0000018ec7877e0 TRAP: 0700 Not tainted = (5.2.0-rc3-next-20190603) [ 1.130820] MSR: 800000010282b033 = CR: 24008888 XER: 20040005 [ 1.130837] CFAR: c0000000003bcc6c IRQMASK: 0 [ 1.130837] GPR00: c0000000003bd0e4 c0000018ec787a70 c000000001929400 = 0000000000000001 [ 1.130837] GPR04: c0000018e8d2e8f0 c0000018e8d2e8f0 c008000006570000 = c008000006550000 [ 1.130837] GPR08: c008000009670000 c0000018e8d0e098 c0000018e8d0e5f8 = c0000018e8ca93f0 [ 1.130837] GPR12: c0000000003bc860 c00000001ec4e200 c000000000160188 = c0000018f4044d00 [ 1.130837] GPR16: 0000000000000000 0000000000000000 0000000000000000 = 0000000000000000 [ 1.130837] GPR20: 0000000000000000 0000000000000000 c000000001485108 = c0000000019620d8 [ 1.130837] GPR24: c000000001962464 0000000000000800 0000000000000001 = 0000000000001800 [ 1.130837] GPR28: c000000001ccc0a8 c000000001ccc080 c0000018e8d2e8b8 = c0000018e8d2e8d8 [ 1.130899] NIP [c0000000003bcc48] __free_vmap_area+0xf8/0x480 [ 1.130906] LR [c0000000003bcbc4] __free_vmap_area+0x74/0x480 [ 1.130912] Call Trace: [ 1.130916] [c0000018ec787a70] [c0000000003bcf70] = __free_vmap_area+0x420/0x480 (unreliable) [ 1.130924] [c0000018ec787ac0] [c0000000003bd0e4] = __purge_vmap_area_lazy+0x114/0x1e0 [ 1.130932] [c0000018ec787b10] [c0000000003bef44] = _vm_unmap_aliases+0x1a4/0x210 [ 1.130939] [c0000018ec787b90] [c0000000003c1c48] __vunmap+0xe8/0x220 [ 1.130946] [c0000018ec787c20] [c00000000021102c] = module_memfree+0x3c/0x50 [ 1.130953] [c0000018ec787c40] [c0000000002110ac] = do_free_init+0x6c/0xa0 [ 1.130964] [c0000018ec787c70] [c000000000156df0] = process_one_work+0x260/0x520 [ 1.130976] [c0000018ec787d10] [c000000000157138] = worker_thread+0x88/0x5f0 [ 1.130985] [c0000018ec787db0] [c000000000160328] kthread+0x1a8/0x1b0 [ 1.130996] [c0000018ec787e20] [c00000000000ba54] = ret_from_kernel_thread+0x5c/0x68 [ 1.131004] Instruction dump: [ 1.131011] e9292c90 2fa90000 419e0378 e8fe0000 e8de0008 60000000 = e909ffe8 e949ffe0 [ 1.131021] 7fa74040 409c0014 7faa3040 409c002c <0fe00000> 60000000 = 7faa3040 409cfff4 [ 1.131032] ---[ end trace b0b43434aedbb78e ]=E2=80=94 Have attached the boot log for reference. Thanks -Sachin --Apple-Mail=_5062A1FE-9AB2-4A0A-92C2-DB3F6773A804 Content-Disposition: attachment; filename=next-20190603.log Content-Type: application/octet-stream; x-unix-mode=0644; name="next-20190603.log" Content-Transfer-Encoding: quoted-printable [84348.251113]=20kexec_core:=20Starting=20new=20kernel=0A[84348.271197]=20= kexec:=20waiting=20for=20cpu=2036=20(physical=2036)=20to=20enter=201=20= state=0A[84348.271208]=20kexec:=20waiting=20for=20cpu=201=20(physical=20= 1)=20to=20enter=202=20state=0A[84348.272736]=20kexec:=20Starting=20= switchover=20sequence.=0AI'm=20in=20purgatory=0A[=20=20=20=200.000000]=20= hash-mmu:=20Page=20sizes=20from=20device-tree:=0A[=20=20=20=200.000000]=20= hash-mmu:=20base_shift=3D12:=20shift=3D12,=20sllp=3D0x0000,=20= avpnm=3D0x00000000,=20tlbiel=3D1,=20penc=3D0=0A[=20=20=20=200.000000]=20= hash-mmu:=20base_shift=3D12:=20shift=3D16,=20sllp=3D0x0000,=20= avpnm=3D0x00000000,=20tlbiel=3D1,=20penc=3D7=0A[=20=20=20=200.000000]=20= hash-mmu:=20base_shift=3D12:=20shift=3D24,=20sllp=3D0x0000,=20= avpnm=3D0x00000000,=20tlbiel=3D1,=20penc=3D56=0A[=20=20=20=200.000000]=20= hash-mmu:=20base_shift=3D16:=20shift=3D16,=20sllp=3D0x0110,=20= avpnm=3D0x00000000,=20tlbiel=3D1,=20penc=3D1=0A[=20=20=20=200.000000]=20= hash-mmu:=20base_shift=3D16:=20shift=3D24,=20sllp=3D0x0110,=20= avpnm=3D0x00000000,=20tlbiel=3D1,=20penc=3D8=0A[=20=20=20=200.000000]=20= hash-mmu:=20base_shift=3D24:=20shift=3D24,=20sllp=3D0x0100,=20= avpnm=3D0x00000001,=20tlbiel=3D0,=20penc=3D0=0A[=20=20=20=200.000000]=20= hash-mmu:=20base_shift=3D34:=20shift=3D34,=20sllp=3D0x0120,=20= avpnm=3D0x000007ff,=20tlbiel=3D0,=20penc=3D3=0A[=20=20=20=200.000000]=20= Using=201TB=20segments=0A[=20=20=20=200.000000]=20hash-mmu:=20= Initializing=20hash=20mmu=20with=20SLB=0A[=20=20=20=200.000000]=20Linux=20= version=205.2.0-rc3-next-20190603=20= (root@ltczep10-lp4.aus.stglabs.ibm.com)=20(gcc=20version=208.2.1=20= 20180905=20(Red=20Hat=208.2.1-3)=20(GCC))=20#1=20SMP=20Tue=20Jun=204=20= 01:04:57=20CDT=202019=0A[=20=20=20=200.000000]=20Found=20initrd=20at=20= 0xc000000003780000:0xc000000004f31731=0A[=20=20=20=200.000000]=20Using=20= pSeries=20machine=20description=0A[=20=20=20=200.000000]=20printk:=20= bootconsole=20[udbg0]=20enabled=0A[=20=20=20=200.000000]=20Partition=20= configured=20for=2040=20cpus.=0A[=20=20=20=200.000000]=20CPU=20maps=20= initialized=20for=208=20threads=20per=20core=0A[=20=20=20=200.000000]=20= -----------------------------------------------------=0A[=20=20=20=20= 0.000000]=20phys_mem_size=20=20=20=20=20=3D=200x1900000000=0A[=20=20=20=20= 0.000000]=20dcache_bsize=20=20=20=20=20=20=3D=200x80=0A[=20=20=20=20= 0.000000]=20icache_bsize=20=20=20=20=20=20=3D=200x80=0A[=20=20=20=20= 0.000000]=20cpu_features=20=20=20=20=20=20=3D=200x0000c07f8f5f91a7=0A[=20= =20=20=200.000000]=20=20=20possible=20=20=20=20=20=20=20=20=3D=20= 0x0000fbffcf5fb1a7=0A[=20=20=20=200.000000]=20=20=20always=20=20=20=20=20= =20=20=20=20=20=3D=200x00000003800081a1=0A[=20=20=20=200.000000]=20= cpu_user_features=20=3D=200xdc0065c2=200xefe00000=0A[=20=20=20=20= 0.000000]=20mmu_features=20=20=20=20=20=20=3D=200x7c006001=0A[=20=20=20=20= 0.000000]=20firmware_features=20=3D=200x00000017c45bfc57=0A[=20=20=20=20= 0.000000]=20hash-mmu:=20ppc64_pft_size=20=20=20=20=3D=200x1e=0A[=20=20=20= =200.000000]=20hash-mmu:=20htab_hash_mask=20=20=20=20=3D=200x7fffff=0A[=20= =20=20=200.000000]=20hash-mmu:=20kernel=20vmalloc=20start=20=20=20=3D=20= 0xc008000000000000=0A[=20=20=20=200.000000]=20hash-mmu:=20kernel=20IO=20= start=20=20=20=20=20=20=20=20=3D=200xc00a000000000000=0A[=20=20=20=20= 0.000000]=20hash-mmu:=20kernel=20vmemmap=20start=20=20=20=3D=20= 0xc00c000000000000=0A[=20=20=20=200.000000]=20= -----------------------------------------------------=0A[=20=20=20=20= 0.000000]=20numa:=20=20=20NODE_DATA=20[mem=200x18ffe98980-0x18ffe9ffff]=0A= [=20=20=20=200.000000]=20rfi-flush:=20fallback=20displacement=20flush=20= available=0A[=20=20=20=200.000000]=20rfi-flush:=20mttrig=20type=20flush=20= available=0A[=20=20=20=200.000000]=20count-cache-flush:=20full=20= software=20flush=20sequence=20enabled.=0A[=20=20=20=200.000000]=20= stf-barrier:=20eieio=20barrier=20available=0A[=20=20=20=200.000000]=20= PPC64=20nvram=20contains=2015360=20bytes=0A[=20=20=20=200.000000]=20= barrier-nospec:=20using=20ORI=20speculation=20barrier=0A[=20=20=20=20= 0.000000]=20Zone=20ranges:=0A[=20=20=20=200.000000]=20=20=20Normal=20=20=20= [mem=200x0000000000000000-0x00000018ffffffff]=0A[=20=20=20=200.000000]=20= =20=20Device=20=20=20empty=0A[=20=20=20=200.000000]=20Movable=20zone=20= start=20for=20each=20node=0A[=20=20=20=200.000000]=20Early=20memory=20= node=20ranges=0A[=20=20=20=200.000000]=20=20=20node=20=20=200:=20[mem=20= 0x0000000000000000-0x00000018ffffffff]=0A[=20=20=20=200.000000]=20= Initmem=20setup=20node=200=20[mem=20= 0x0000000000000000-0x00000018ffffffff]=0A[=20=20=20=200.000000]=20= percpu:=20Embedded=2011=20pages/cpu=20s629912=20r0=20d90984=20u1048576=0A= [=20=20=20=200.000000]=20node[0]=20zonelist:=200:Normal=20=0A[=20=20=20=20= 0.000000]=20Built=201=20zonelists,=20mobility=20grouping=20on.=20=20= Total=20pages:=201636800=0A[=20=20=20=200.000000]=20Policy=20zone:=20= Normal=0A[=20=20=20=200.000000]=20Kernel=20command=20line:=20= root=3DUUID=3D8b2c60d2-4da6-4873-b9ac-6b332055a0f2=20ro=20=0A[=20=20=20=20= 0.000000]=20Memory:=20104635840K/104857600K=20available=20(12416K=20= kernel=20code,=201792K=20rwdata,=206976K=20rodata,=204992K=20init,=20= 3847K=20bss,=20221760K=20reserved,=200K=20cma-reserved)=0A[=20=20=20=20= 0.000000]=20random:=20get_random_u64=20called=20from=20= cache_random_seq_create+0x98/0x1f0=20with=20crng_init=3D0=0A[=20=20=20=20= 0.000000]=20SLUB:=20HWalign=3D128,=20Order=3D0-3,=20MinObjects=3D0,=20= CPUs=3D40,=20Nodes=3D32=0A[=20=20=20=200.000000]=20ftrace:=20allocating=20= 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0000000000000000=200000000000000000=20c000000001485108=20= c0000000019620d8=20=0A[=20=20=20=202.141830]=20GPR24:=20c000000001962464=20= 0000000000000800=20c0000000017f3b20=200000000000001800=20=0A[=20=20=20=20= 2.141830]=20GPR28:=20c000000001b066c0=20c000000001b06698=20= 0000000000000000=20c000000001c15100=20=0A[=20=20=20=202.141899]=20NIP=20= [c0000000007718a0]=20do_unblank_screen+0x190/0x250=0A[=20=20=20=20= 2.141906]=20LR=20[c00000000077188c]=20do_unblank_screen+0x17c/0x250=0A[=20= =20=20=202.141912]=20Call=20Trace:=0A[=20=20=20=202.141917]=20= [c0000018ec787550]=20[c0000000007718bc]=20do_unblank_screen+0x1ac/0x250=20= (unreliable)=0A[=20=20=20=202.141928]=20[c0000018ec7875d0]=20= [c00000000012b504]=20panic+0x1dc/0x408=0A[=20=20=20=202.141937]=20= [c0000018ec787670]=20[c00000000002db70]=20oops_end+0x1b0/0x1c0=0A[=20=20=20= =202.141945]=20[c0000018ec7876f0]=20[c0000000000307a0]=20= program_check_exception+0x2c0/0x3c0=0A[=20=20=20=202.141954]=20= 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[c0000018ec787d10]=20[c000000000157138]=20worker_thread+0x88/0x5f0=0A[=20= =20=20=202.142046]=20[c0000018ec787db0]=20[c000000000160328]=20= kthread+0x1a8/0x1b0=0A[=20=20=20=202.142054]=20[c0000018ec787e20]=20= [c00000000000ba54]=20ret_from_kernel_thread+0x5c/0x68=0A[=20=20=20=20= 2.142062]=20Instruction=20dump:=0A[=20=20=20=202.142067]=204e800020=20= 60000000=2060000000=2060000000=207c0802a6=20f8010090=204ba43c51=20= 60000000=20=0A[=20=20=20=202.142078]=20813f0000=207d231b78=202f830000=20= 409e0034=20<0fe00000>=20e8010090=207c0803a6=204bfffeac=20=0A[=20=20=20=20= 2.142090]=20---[=20end=20trace=20b0b43434aedbb78f=20]---=0A[=20=20=20=20= 2.142097]=20Rebooting=20in=2010=20seconds..=0A=0A= --Apple-Mail=_5062A1FE-9AB2-4A0A-92C2-DB3F6773A804--