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w/ltp(mmapstress03) Message-Id: Date: Thu, 28 Apr 2022 22:26:33 +0530 Cc: linuxppc-dev@lists.ozlabs.org To: linux-next@vger.kernel.org, linux-mm@kvack.org X-Mailer: Apple Mail (2.3696.80.82.1.1) X-TM-AS-GCONF: 00 X-Proofpoint-GUID: rg49UFS1o8o4O2KWXNwhWh-KE6nk9vvM X-Proofpoint-ORIG-GUID: rg49UFS1o8o4O2KWXNwhWh-KE6nk9vvM 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=2022-04-28_02,2022-04-28_01,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 impostorscore=0 adultscore=0 spamscore=0 mlxlogscore=999 bulkscore=0 lowpriorityscore=0 mlxscore=0 priorityscore=1501 phishscore=0 suspectscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2204280099 X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 739944004B X-Stat-Signature: ftfjxnxq8quxbipjzfwbwqyh6h6139is Authentication-Results: imf01.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b=ABmokKLT; spf=pass (imf01.hostedemail.com: domain of sachinp@linux.ibm.com designates 148.163.158.5 as permitted sender) smtp.mailfrom=sachinp@linux.ibm.com; dmarc=pass (policy=none) header.from=ibm.com X-HE-Tag: 1651164995-532502 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 tests (mmapstress03 specifically) against = 5.18.0-rc4-next-20220428 booted on IBM Power server mentioned BUG is encountered. # ./mmapstress03 mmapstress03 0 TINFO : uname.machine=3Dppc64le kernel is 64bit mmapstress03: errno =3D 12: failed to fiddle with brk at the end mmapstress03 1 TFAIL : mmapstress03.c:212: Test failed [ 32.396145] mmap: mmapstress03 (3023): VmData 18446744073706799104 = exceed data ulimit 18446744073709551615. Update limits or use boot = option ignore_rlimit_data. [ 32.396192] ------------[ cut here ]------------ [ 32.396193] kernel BUG at mm/mmap.c:3164! [ 32.396195] Oops: Exception in kernel mode, sig: 5 [#1] [ 32.396210] LE PAGE_SIZE=3D64K MMU=3DRadix SMP NR_CPUS=3D2048 NUMA = pSeries [ 32.396213] Modules linked in: dm_mod mptcp_diag xsk_diag tcp_diag = udp_diag raw_diag inet_diag unix_diag af_packet_diag netlink_diag = nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet = nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat = nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 rfkill ip_set bonding tls = nf_tables nfnetlink sunrpc binfmt_misc pseries_rng drm = drm_panel_orientation_quirks xfs libcrc32c sd_mod t10_pi sr_mod = crc64_rocksoft_generic cdrom crc64_rocksoft crc64 sg ibmvscsi = scsi_transport_srp ibmveth xts vmx_crypto fuse [ 32.396262] CPU: 5 PID: 3023 Comm: mmapstress03 Not tainted = 5.18.0-rc4-next-20220428 #16 [ 32.396267] NIP: c0000000004c4750 LR: c0000000004c4730 CTR: = c0000000004bf5d0 [ 32.396270] REGS: c00000001abeb810 TRAP: 0700 Not tainted = (5.18.0-rc4-next-20220428) [ 32.396274] MSR: 8000000000029033 CR: = 22002224 XER: 00000000 [ 32.396283] CFAR: c0000000008af740 IRQMASK: 0=20 [ 32.396283] GPR00: c0000000004c4730 c00000001abebab0 c000000002a71300 = 0000000000000000=20 [ 32.396283] GPR04: c000000079dcd000 ffffffffffffffff 0000000000000008 = ffffffffffffffff=20 [ 32.396283] GPR08: 0000000000000008 0000000000000001 0000000000000000 = c000000079dcd040=20 [ 32.396283] GPR12: c000000079dcd008 c00000087fffa300 0000000000000000 = 0000000000000000=20 [ 32.396283] GPR16: 0000000000000000 0000000000000000 0000000000000000 = 0000000000000000=20 [ 32.396283] GPR20: 0000000000000000 0000000000000000 0000000000000000 = c000000002aaae85=20 [ 32.396283] GPR24: 0000000000000000 0000000000000000 00007fffaa5c1200 = c000000020de3660=20 [ 32.396283] GPR28: 000000000000000c c000000020de3600 000000000000000d = 0000000000000000=20 [ 32.396320] NIP [c0000000004c4750] exit_mmap+0x190/0x390 [ 32.396327] LR [c0000000004c4730] exit_mmap+0x170/0x390 [ 32.396332] Call Trace: [ 32.396334] [c00000001abebab0] [c0000000004c4730] = exit_mmap+0x170/0x390 (unreliable) [ 32.396340] [c00000001abebbd0] [c0000000001700f4] __mmput+0x54/0x200 [ 32.396344] [c00000001abebc10] [c00000000017fe5c] exit_mm+0xfc/0x190 [ 32.396348] [c00000001abebc50] [c00000000018016c] do_exit+0x27c/0x5a0 [ 32.396352] [c00000001abebcf0] [c00000000018063c] = do_group_exit+0x4c/0xd0 [ 32.396356] [c00000001abebd30] [c0000000001806e4] = sys_exit_group+0x24/0x30 [ 32.396360] [c00000001abebd50] [c000000000037084] = system_call_exception+0x254/0x550 [ 32.396364] [c00000001abebe10] [c00000000000bfe8] = system_call_vectored_common+0xe8/0x278 [ 32.396369] --- interrupt: 3000 at 0x7fffaa318d04 [ 32.396374] NIP: 00007fffaa318d04 LR: 0000000000000000 CTR: = 0000000000000000 [ 32.396377] REGS: c00000001abebe80 TRAP: 3000 Not tainted = (5.18.0-rc4-next-20220428) [ 32.396380] MSR: 800000000280f033 = CR: 42002222 XER: 00000000 [ 32.396389] IRQMASK: 0=20 [ 32.396389] GPR00: 00000000000000ea 00007fffe43f3420 00007fffaa457100 = 0000000000000001=20 [ 32.396389] GPR04: 0000000000000000 0000000011a602a0 00007fffaa5c1200 = 0000000000000000=20 [ 32.396389] GPR08: 0000000000000000 0000000000000000 0000000000000000 = 0000000000000000=20 [ 32.396389] GPR12: 0000000000000000 00007fffaa5ca500 0000000000000000 = 0000000000000000=20 [ 32.396389] GPR16: 0000000000000000 0000000000000000 0000000000000000 = 0000000000000000=20 [ 32.396389] GPR20: 0000000000000000 0000000000000000 0000000000000000 = 0000000000000001=20 [ 32.396389] GPR24: 00007fffaa450938 0000000000000000 0000000000000001 = 00007fffaa4529f8=20 [ 32.396389] GPR28: 0000000000000001 00007fffaa5c3510 fffffffffffff000 = 0000000000000001=20 [ 32.396425] NIP [00007fffaa318d04] 0x7fffaa318d04 [ 32.396427] LR [0000000000000000] 0x0 [ 32.396429] --- interrupt: 3000 [ 32.396431] Instruction dump: [ 32.396433] 60000000 3880ffff 38610020 483eff5d 60000000 7c7f1b79 = 4082ffb8 813d0058=20 [ 32.396439] 7d29f278 7d290034 5529d97e 69290001 <0b090000> 60000000 = 7fa3eb78 483e328d=20 [ 32.396447] ---[ end trace 0000000000000000 ]--- [ 32.398759]=20 [ 33.398760] Kernel panic - not syncing: Fatal exception This problem was introduced with 5.18.0-rc4-next-20220427. I am unable = to complete the git bisect due to build failure related to = mapletree-vs-khugepaged issue. Thanks -Sachin=