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smtpav05.fra02v.mail.ibm.com (smtpav05.fra02v.mail.ibm.com [10.20.54.104]) by smtprelay03.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 41PGW38J24642126 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sun, 25 Feb 2024 16:32:05 GMT Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 05CE920067; Sun, 25 Feb 2024 16:32:03 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4975520063; Sun, 25 Feb 2024 16:32:02 +0000 (GMT) Received: from smtpclient.apple (unknown [9.43.48.90]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Sun, 25 Feb 2024 16:32:01 +0000 (GMT) From: Sachin Sant Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3774.300.61.1.2\)) Subject: Kernel WARNING at lib/vsprintf.c:2721 while running ftrace kernel selftests Message-Id: Date: Sun, 25 Feb 2024 22:01:50 +0530 To: linuxppc-dev X-Mailer: Apple Mail (2.3774.300.61.1.2) X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: qSodc_Lz8a9ctneSEKO1neiNU2DyOOBw X-Proofpoint-GUID: qSodc_Lz8a9ctneSEKO1neiNU2DyOOBw X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-25_18,2024-02-23_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 mlxlogscore=764 malwarescore=0 suspectscore=0 adultscore=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 mlxscore=0 clxscore=1011 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402250132 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Steven Rostedt Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" While running ftrace specific kernel selftests following warning is seen on a Power10 logical partition (LPAR) booted with latest mainline kernel. ------------[ cut here ]------------ precision 63492 too large WARNING: CPU: 15 PID: 2538829 at lib/vsprintf.c:2721 = set_precision+0x68/0xa4 Modules linked in: nvram rpadlpar_io rpaphp uinput torture vmac = poly1305_generic chacha_generic chacha20poly1305 n_gsm pps_ldisc = ppp_synctty ppp_async ppp_generic serport slcan can_dev slip slhc = snd_hrtimer snd_seq snd_seq_device snd_timer snd soundcore pcrypt = crypto_user n_hdlc dummy veth tun nfsv3 nfs netfs brd overlay exfat vfat = fat btrfs blake2b_generic xor raid6_pq zstd_compress xfs loop sctp = ip6_udp_tunnel udp_tunnel nfsd auth_rpcgss nfs_acl lockd grace configs = dm_mod 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 bonding rfkill tls ip_set = nf_tables libcrc32c nfnetlink sunrpc pseries_rng vmx_crypto ext4 mbcache = jbd2 sd_mod t10_pi crc64_rocksoft crc64 sg ibmvscsi ibmveth = scsi_transport_srp fuse [last unloaded: test_cpuidle_latency(O)] CPU: 15 PID: 2538829 Comm: awk Tainted: G M O K 6.8.0-rc5-gfca7526b7d89 = #1 Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200 0xf000006 = of:IBM,FW1060.00 (NH1060_018) hv:phyp pSeries NIP: c000000000f57c34 LR: c000000000f57c30 CTR: c000000000f5cdf0 REGS: c000000a58e4f5f0 TRAP: 0700 Tainted: G M O K = (6.8.0-rc5-gfca7526b7d89) MSR: 8000000002029033 CR: 48000824 XER: = 00000005 CFAR: c00000000016154c IRQMASK: 0=20 GPR00: c000000000f57c30 c000000a58e4f890 c000000001482800 = 0000000000000019=20 GPR04: 0000000100011559 c000000a58e4f660 c000000a58e4f658 = 0000000000000027=20 GPR08: c000000e84e37c10 0000000000000001 0000000000000027 = c000000002a47e50=20 GPR12: 0000000000000000 c000000e87bf7300 0000000000000000 = 0000000000000000=20 GPR16: 0000000000000000 0000000000000000 0000000000000000 = 0000000000000000=20 GPR20: c0000004a43ec590 0000000000400cc0 0000000000000003 = c0000000012c3e65=20 GPR24: c000000a58e4fa18 0000000000000025 0000000000000020 = 000000000001ff97=20 GPR28: c0000001168a00dd c0000001168c0074 c000000a58e4f920 = 000000000000f804=20 NIP [c000000000f57c34] set_precision+0x68/0xa4 LR [c000000000f57c30] set_precision+0x64/0xa4 Call Trace: [c000000a58e4f890] [c000000000f57c30] set_precision+0x64/0xa4 = (unreliable) [c000000a58e4f900] [c000000000f5ccc4] vsnprintf+0x198/0x4c8 [c000000a58e4f980] [c000000000f53228] seq_buf_vprintf+0x50/0xa0 [c000000a58e4f9b0] [c00000000031cec0] trace_seq_printf+0x60/0xe0 [c000000a58e4f9e0] [c00000000031b5f0] trace_print_print+0x78/0xa4 [c000000a58e4fa60] [c0000000003133a4] print_trace_line+0x2ac/0x6d8 [c000000a58e4fb20] [c0000000003145c0] s_show+0x58/0x2c0 [c000000a58e4fba0] [c0000000005dfb2c] seq_read_iter+0x448/0x618 [c000000a58e4fc70] [c0000000005dfe08] seq_read+0x10c/0x174 [c000000a58e4fd10] [c00000000059a7e0] vfs_read+0xe0/0x39c [c000000a58e4fdc0] [c00000000059b59c] ksys_read+0x7c/0x140 [c000000a58e4fe10] [c000000000035d74] system_call_exception+0x134/0x330 [c000000a58e4fe50] [c00000000000d6a0] system_call_common+0x160/0x2e4 --- interrupt: c00 at 0x7fff84521684 NIP: 00007fff84521684 LR: 00000001252f0dc4 CTR: 0000000000000000 REGS: c000000a58e4fe80 TRAP: 0c00 Tainted: G M O K = (6.8.0-rc5-gfca7526b7d89) MSR: 800000000000f033 CR: 22000202 XER: = 00000000 IRQMASK: 0=20 GPR00: 0000000000000003 00007fffcd076c30 00007fff84607300 = 0000000000000005=20 GPR04: 000000012a8a1a20 0000000000010000 fffffffffffffff5 = 000000012a9bcce6=20 GPR08: 0000000000000001 0000000000000000 0000000000000000 = 0000000000000000=20 GPR12: 0000000000000000 00007fff84a5d2a0 0000000000000001 = 000000012a8851d8=20 GPR16: 000000012a884268 00007fff84601888 0000000125377f50 = 00007fff84601880=20 GPR20: 0000000000000044 000000000000000f ffffffffffffffff = 0000000000000000=20 GPR24: 00007fffcd076e48 00007fffcd076d98 0000000000000000 = 0000000000000000=20 GPR28: 00007fffcd076e48 0000000000000000 00007fffcd076da0 = 000000012a8a1900=20 NIP [00007fff84521684] 0x7fff84521684 LR [00000001252f0dc4] 0x1252f0dc4 --- interrupt: c00 Code: f821ff91 2f890000 409e0034 7c0802a6 3c62fff0 39200001 3d420177 = 3863e310 992ad6db f8010080 4b209899 60000000 <0fe00000> e8010080 = 7c0803a6 2f9f0000=20 ---[ end trace 0000000000000000 ]=E2=80=94 This warning is seen while running test that was added by following commit: commit 3bf7009251f0f41cdd0188ab7b3879df81810703 tracing/selftests: Add test to test the trace_marker - Sachin=