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with ltp/mmapstress03 Message-Id: <9FFA19ED-06DE-498B-924B-9233C1FCDEC5@linux.ibm.com> Date: Thu, 12 May 2022 19:17:36 +0530 Cc: open list , "Liam.Howlett@oracle.com" To: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org X-Mailer: Apple Mail (2.3696.80.82.1.1) X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: oK95Tf17x4VIoJ4AsUlICwkBhakNF2Zd X-Proofpoint-GUID: oK95Tf17x4VIoJ4AsUlICwkBhakNF2Zd X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.858,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-05-12_10,2022-05-12_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 bulkscore=0 adultscore=0 clxscore=1015 mlxlogscore=738 mlxscore=0 spamscore=0 phishscore=0 suspectscore=0 malwarescore=0 impostorscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2205120065 X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 3537B1C00BA X-Stat-Signature: im56cwzk5duau1u1h1mwmbquadpp9q73 X-Rspam-User: Authentication-Results: imf21.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b=aH+iBPSI; spf=pass (imf21.hostedemail.com: domain of sachinp@linux.ibm.com designates 148.163.156.1 as permitted sender) smtp.mailfrom=sachinp@linux.ibm.com; dmarc=pass (policy=none) header.from=ibm.com X-HE-Tag: 1652363256-29503 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: While running LTP test mmapstress03 on a Power10 LPAR running 5.18.0-rc6-next-20220512 following kernel bug was seen [ 944.492475] mmap: mmapstress03 (1919217): VmData 18446744073706799104 = exceed data ulimit 18446744073709551615. Update limits or use boot = option ignore_rlimit_data. [ 944.492511] ------------[ cut here ]------------ [ 944.492512] kernel BUG at mm/mmap.c:3233! [ 944.492514] Oops: Exception in kernel mode, sig: 5 [#1] [ 944.492529] LE PAGE_SIZE=3D64K MMU=3DRadix SMP NR_CPUS=3D2048 NUMA = pSeries [ 944.492533] Modules linked in: dm_mod(E) nft_fib_inet(E) = nft_fib_ipv4(E) nft_fib_ipv6(E) nft_fib(E) nft_reject_inet(E) = nf_reject_ipv4(E) nf_reject_ipv6(E) nft_reject(E) nft_ct(E) = nft_chain_nat(E) nf_nat(E) nf_conntrack(E) nf_defrag_ipv6(E) = nf_defrag_ipv4(E) rfkill(E) ip_set(E) bonding(E) nf_tables(E) tls(E) = libcrc32c(E) nfnetlink(E) sunrpc(E) pseries_rng(E) vmx_crypto(E) ext4(E) = mbcache(E) jbd2(E) sd_mod(E) t10_pi(E) crc64_rocksoft(E) crc64(E) sg(E) = ibmvscsi(E) scsi_transport_srp(E) ibmveth(E) fuse(E) [ 944.492571] CPU: 5 PID: 1919217 Comm: mmapstress03 Tainted: G M = E 5.18.0-rc6-next-20220512 #1 [ 944.492576] NIP: c00000000047e450 LR: c00000000047e434 CTR: = c000000000478e60 [ 944.492579] REGS: c000000086dcb880 TRAP: 0700 Tainted: G M = E (5.18.0-rc6-next-20220512) [ 944.492583] MSR: 8000000000029033 CR: = 22002484 XER: 00000000 [ 944.492590] CFAR: c000000000837a2c IRQMASK: 0=20 [ 944.492590] GPR00: c00000000047e434 c000000086dcbb20 c000000002a7f100 = 0000000000000000=20 [ 944.492590] GPR04: 0000000000000000 ffffffffffffffff 000000000000000f = 0000000000000000=20 [ 944.492590] GPR08: ffffffffffffffff 0000000000000001 000000000000000e = 0000000000000008=20 [ 944.492590] GPR12: 0000000000000008 c000000effff7f00 0000000000000000 = 0000000000000000=20 [ 944.492590] GPR16: 0000000000000000 0000000000000000 0000000000000000 = 0000000000000000=20 [ 944.492590] GPR20: 0000000000000000 00007fffb8a04ee0 0000000000000001 = 0000000000000001=20 [ 944.492590] GPR24: 0000000000000000 00007fffb8c32bd0 0000000000000000 = c000000021003c60=20 [ 944.492590] GPR28: 000000000000000c c000000021003c00 0000000000000001 = 0000000000000000=20 [ 944.492629] NIP [c00000000047e450] exit_mmap+0x190/0x380 [ 944.492635] LR [c00000000047e434] exit_mmap+0x174/0x380 [ 944.492638] Call Trace: [ 944.492639] [c000000086dcbb20] [c00000000047e434] = exit_mmap+0x174/0x380 (unreliable) [ 944.492644] [c000000086dcbc40] [c000000000152990] mmput+0xb0/0x240 [ 944.492650] [c000000086dcbc80] [c000000000160390] do_exit+0x370/0xc30 [ 944.492653] [c000000086dcbd50] [c000000000160dfc] = do_group_exit+0x4c/0xe0 [ 944.492658] [c000000086dcbd90] [c000000000160eb4] = sys_exit_group+0x24/0x30 [ 944.492661] [c000000086dcbdb0] [c0000000000336bc] = system_call_exception+0x17c/0x350 [ 944.492666] [c000000086dcbe10] [c00000000000c53c] = system_call_common+0xec/0x270 [ 944.492671] --- interrupt: c00 at 0x7fffb88f318c [ 944.492675] NIP: 00007fffb88f318c LR: 00007fffb884cf24 CTR: = 0000000000000000 [ 944.492678] REGS: c000000086dcbe80 TRAP: 0c00 Tainted: G M = E (5.18.0-rc6-next-20220512) [ 944.492681] MSR: 800000000280f033 = CR: 22000202 XER: 00000000 [ 944.492690] IRQMASK: 0=20 [ 944.492690] GPR00: 00000000000000ea 00007fffc61d2de0 00007fffb8a07300 = 0000000000000001=20 [ 944.492690] GPR04: 0000000000000000 000000002e5b02a0 0000000000000000 = 00007fffb8c32bd0=20 [ 944.492690] GPR08: 0000000000000000 0000000000000000 0000000000000000 = 0000000000000000=20 [ 944.492690] GPR12: 0000000000000000 00007fffb8c3a340 0000000000000000 = 0000000000000000=20 [ 944.492690] GPR16: 0000000000000000 0000000000000000 0000000000000000 = 0000000000000000=20 [ 944.492690] GPR20: 0000000000000000 00007fffb8a04ee0 0000000000000001 = 0000000000000001=20 [ 944.492690] GPR24: 00007fffb8a008a0 0000000000000000 0000000000000001 = 0000000000000001=20 [ 944.492690] GPR28: 0000000000000000 0000000000000000 00007fffb8c33350 = 0000000000000001=20 [ 944.492725] NIP [00007fffb88f318c] 0x7fffb88f318c [ 944.492728] LR [00007fffb884cf24] 0x7fffb884cf24 [ 944.492730] --- interrupt: c00 [ 944.492732] Instruction dump: [ 944.492734] 48a29539 60000000 3880ffff 38610020 483c0bc9 60000000 = 7c7f1b79 4082ffb4=20 [ 944.492741] 815d0058 39200001 7f8af000 7fc04f9e <0b1e0000> 60000000 = 7fa3eb78 483b916d=20 [ 944.492748] ---[ end trace 0000000000000000 ]--- [ 944.493479]=20 [ 945.493481] Kernel panic - not syncing: Fatal exception The BUG_ON was introduced by following commit with next-20220511 commit 369a899d3aff (mm: remove the vma linked list) - Sachin