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Wed, 22 Oct 2025 08:26:09 +0000 Received: from smtpav05.dal12v.mail.ibm.com (smtpav05.dal12v.mail.ibm.com [10.241.53.104]) by smtprelay03.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 59M8Q8xq31654550 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 22 Oct 2025 08:26:08 GMT Received: from smtpav05.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9049C58065; Wed, 22 Oct 2025 08:26:08 +0000 (GMT) Received: from smtpav05.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2F56858056; Wed, 22 Oct 2025 08:26:06 +0000 (GMT) Received: from [9.61.248.143] (unknown [9.61.248.143]) by smtpav05.dal12v.mail.ibm.com (Postfix) with ESMTP; Wed, 22 Oct 2025 08:26:05 +0000 (GMT) Message-ID: Date: Wed, 22 Oct 2025 13:56:04 +0530 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [next-20251022] Kernel Boot Warnings at arch/powerpc/kernel/trace/ftrace.c:234 Content-Language: en-GB From: Venkat Rao Bagalkote To: LKML , linuxppc-dev , Stephen Rothwell , Madhavan Srinivasan , Hari Bathini , joe.lawrence@redhat.com, Naveen N Rao References: <72469502-ca37-4287-90b9-a751cecc498c@linux.ibm.com> In-Reply-To: <72469502-ca37-4287-90b9-a751cecc498c@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=EJELElZC c=1 sm=1 tr=0 ts=68f89523 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=IkcTkHD0fZMA:10 a=x6icFKpwvdMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VnNF1IyMAAAA:8 a=X1xm8aspWHkySpns4nUA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=cPQSjfK2_nFv0Q5t_7PE:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMDE4MDAyMiBTYWx0ZWRfX9s8ifp2QaYSY CByUZt9PumhdzLOI60y53WVLdcLEBs5znyEBD2LisChdT8PRy+oc+L373U+rmBqFBv7xAit+ghV rnFXaMC3WGulA7xJ/72/Hen6lO7fesMCZ/pY820HV9f/iQ2HbFHHVOaeXG0YXy7t/zoBNme8LTn FcL/8yOtWdy8wIZzDd5k6GuFGUtwl9WqfOBByntxVB93k/OH0n9LyJLZKRJ1ajkyFUFzUKgdGHn kgpguB+o5tDqRyb0vh69Smk365qHkNlwAYSCC/UBNlJjIk978fuR5hxfKYYig4XB+CSzJJ22Y2i 1bwtzHf6Q0+DMXeDYLLqei9EpqK/puKcv88yBt3VsVcDfJ8I2gZpBal/Z+xLsBHnPwJp2kciYbt GSAyIQAwhwIl/IVoS6P8Heiz1UKQug== X-Proofpoint-GUID: LXwn_AOwU_brLL-RRXisZ0RQKSQPJm8z X-Proofpoint-ORIG-GUID: LXwn_AOwU_brLL-RRXisZ0RQKSQPJm8z X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-10-22_03,2025-10-13_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 priorityscore=1501 suspectscore=0 bulkscore=0 spamscore=0 malwarescore=0 phishscore=0 adultscore=0 lowpriorityscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510020000 definitions=main-2510180022 On 22/10/25 1:52 pm, Venkat Rao Bagalkote wrote: > Greetings!!! > > > IBM CI has reported kernel boot warnings with next-20251022 kernel. I > see there are couple of warnings hit and eventually system boots to > emergency mode. > > > Traces: > > > [    0.000000] stackdepot: allocating space for 8191 stack pools via > memblock > [    0.000000] SLUB: HWalign=128, Order=0-3, MinObjects=0, CPUs=48, > Nodes=32 > [    0.000000] ------------[ cut here ]------------ > [    0.000000] WARNING: arch/powerpc/kernel/trace/ftrace.c:234 at > ftrace_init_ool_stub+0x188/0x3f4, CPU#0: swapper/0 > [    0.000000] Modules linked in: > [    0.000000] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted > 6.18.0-rc2-next-20251022+ #1 VOLUNTARY > [    0.000000] Hardware name: IBM,9080-HEX Power11 (architected) > 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries > [    0.000000] NIP:  c000000000092430 LR: c000000000092414 CTR: > 0000000000000000 > [    0.000000] REGS: c000000004ba7a70 TRAP: 0700   Not tainted > (6.18.0-rc2-next-20251022+) > [    0.000000] MSR:  8000000002021033   CR: > 44022224  XER: 00000001 > [    0.000000] CFAR: c0000000008d7114 IRQMASK: 3 > [    0.000000] GPR00: c000000000508de0 c000000004ba7d10 > c00000000248a400 c000000004ce9720 > [    0.000000] GPR04: c000000007335df8 00000000000000c0 > c000000000092414 0000000000000000 > [    0.000000] GPR08: 0000000000000003 0000000000000001 > 0000000000000000 0000000000002000 > [    0.000000] GPR12: c00e0000008ce3a6 c0000000050b0000 > 0000000000000003 0000000000000001 > [    0.000000] GPR16: c000000007335df8 0000000000000000 > c0000000045a8ac0 c000000004c2d450 > [    0.000000] GPR20: c0000000070e0108 c0000000070e0110 > 0000000000000013 000000000000c869 > [    0.000000] GPR24: c000000004ce9720 000000000000393f > c000000007335e08 c000000001879a78 > [    0.000000] GPR28: c000000001a10230 0000000000003940 > 0000000000000000 c000000007335df8 > [    0.000000] NIP [c000000000092430] ftrace_init_ool_stub+0x188/0x3f4 > [    0.000000] LR [c000000000092414] ftrace_init_ool_stub+0x16c/0x3f4 > [    0.000000] Call Trace: > [    0.000000] [c000000004ba7d10] [c0000000000925c0] > ftrace_init_ool_stub+0x318/0x3f4 (unreliable) > [    0.000000] [c000000004ba7de0] [c000000000508de0] > ftrace_process_locs+0x364/0x8e0 > [    0.000000] [c000000004ba7ee0] [c000000003060908] > ftrace_init+0x68/0x1c8 > [    0.000000] [c000000004ba7f50] [c00000000300ee6c] > start_kernel+0x1e4/0x4fc > [    0.000000] [c000000004ba7fe0] [c00000000000e9a0] > start_here_common+0x1c/0x20 > [    0.000000] Code: 1d290018 7f9c4a14 3bbd0001 7f03c378 48844ca5 > 60000000 39400000 7f9dc800 39200001 7c1dc800 93b80000 7d29575e > <0b090000> 4181005c 7fe3fb78 3b3c0008 > [    0.000000] ---[ end trace 0000000000000000 ]--- > [    0.000000] ------------[ ftrace bug ]------------ > [    0.000000] ftrace failed to modify > [    0.000000] [] ip6mr_vif_seq_stop+0x0/0x8 > [    0.000000]  actual:   00:00:00:60 > [    0.000000] Initializing ftrace call sites > [    0.000000] ftrace record flags: 0 > [    0.000000]  (0) > [    0.000000]  expected tramp: c000000000093490 > [    0.000000] ------------[ cut here ]------------ > [    0.000000] WARNING: kernel/trace/ftrace.c:2209 at > ftrace_bug+0x168/0x49c, CPU#0: swapper/0 > [    0.000000] Modules linked in: > [    0.000000] CPU: 0 UID: 0 PID: 0 Comm: swapper Tainted: G   W       >    6.18.0-rc2-next-20251022+ #1 VOLUNTARY > [    0.000000] Tainted: [W]=WARN > [    0.000000] Hardware name: IBM,9080-HEX Power11 (architected) > 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries > [    0.000000] NIP:  c000000000508748 LR: c000000000508744 CTR: > 0000000000000000 > [    0.000000] REGS: c000000004ba7a90 TRAP: 0700   Tainted: G   W     >       (6.18.0-rc2-next-20251022+) > [    0.000000] MSR:  8000000002021033   CR: > 28028220  XER: 00000001 > [    0.000000] CFAR: c0000000003880f8 IRQMASK: 3 > [    0.000000] GPR00: c000000000508744 c000000004ba7d30 > c00000000248a400 0000000000000022 > [    0.000000] GPR04: 0000000000000004 0000000000000000 > c00000000027abec 0000000000000001 > [    0.000000] GPR08: 0000000000000001 0000000000000000 > 0000000000000000 a80e000000000000 > [    0.000000] GPR12: c00e00000081c5d8 c0000000050b0000 > 0000000000000003 0000000000000001 > [    0.000000] GPR16: c000000007335df8 0000000000000000 > c0000000045a8ac0 c000000004c2d450 > [    0.000000] GPR20: c0000000070e0108 c0000000070e0110 > 0000000000000013 000000000000c869 > [    0.000000] GPR24: 0000000000000000 0000000000000000 > 000000000000b93f 0000000000000000 > [    0.000000] GPR28: c000000001879a78 c000000001b93d20 > c000000007335df8 c000000007335e00 > [    0.000000] NIP [c000000000508748] ftrace_bug+0x168/0x49c > [    0.000000] LR [c000000000508744] ftrace_bug+0x164/0x49c > [    0.000000] Call Trace: > [    0.000000] [c000000004ba7d30] [c000000000508744] > ftrace_bug+0x164/0x49c (unreliable) > [    0.000000] [c000000004ba7de0] [c000000000508dfc] > ftrace_process_locs+0x380/0x8e0 > [    0.000000] [c000000004ba7ee0] [c000000003060908] > ftrace_init+0x68/0x1c8 > [    0.000000] [c000000004ba7f50] [c00000000300ee6c] > start_kernel+0x1e4/0x4fc > [    0.000000] [c000000004ba7fe0] [c00000000000e9a0] > start_here_common+0x1c/0x20 > [    0.000000] Code: 7fe3fb78 483cea79 60000000 e93e0008 75290800 > 40820164 7fc3f378 4bfffa19 7c641b78 387d0fe0 4be7f975 60000000 > <0fe00000> 39000001 3ce2027a 3d22fdc1 > [    0.000000] ---[ end trace 0000000000000000 ]--- > [    0.000000] ftrace: allocating 51305 entries in 19 pages Pasting the traces in more legible form. [    0.000000] mem auto-init: stack:all(zero), heap alloc:off, heap free:off [    0.000000] stackdepot: allocating hash table via alloc_large_system_hash [    0.000000] stackdepot hash table entries: 1048576 (order: 8, 16777216 bytes, linear) [    0.000000] stackdepot: allocating space for 8191 stack pools via memblock [    0.000000] SLUB: HWalign=128, Order=0-3, MinObjects=0, CPUs=48, Nodes=32 [    0.000000] ------------[ cut here ]------------ [    0.000000] WARNING: arch/powerpc/kernel/trace/ftrace.c:234 at ftrace_init_ool_stub+0x188/0x3f4, CPU#0: swapper/0 [    0.000000] Modules linked in: [    0.000000] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.18.0-rc2-next-20251022+ #1 VOLUNTARY [    0.000000] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries [    0.000000] NIP:  c000000000092430 LR: c000000000092414 CTR: 0000000000000000 [    0.000000] REGS: c000000004ba7a70 TRAP: 0700   Not tainted (6.18.0-rc2-next-20251022+) [    0.000000] MSR:  8000000002021033   CR: 44022224  XER: 00000001 [    0.000000] CFAR: c0000000008d7114 IRQMASK: 3 [    0.000000] GPR00: c000000000508de0 c000000004ba7d10 c00000000248a400 c000000004ce9720 [    0.000000] GPR04: c000000007335df8 00000000000000c0 c000000000092414 0000000000000000 [    0.000000] GPR08: 0000000000000003 0000000000000001 0000000000000000 0000000000002000 [    0.000000] GPR12: c00e0000008ce3a6 c0000000050b0000 0000000000000003 0000000000000001 [    0.000000] GPR16: c000000007335df8 0000000000000000 c0000000045a8ac0 c000000004c2d450 [    0.000000] GPR20: c0000000070e0108 c0000000070e0110 0000000000000013 000000000000c869 [    0.000000] GPR24: c000000004ce9720 000000000000393f c000000007335e08 c000000001879a78 [    0.000000] GPR28: c000000001a10230 0000000000003940 0000000000000000 c000000007335df8 [    0.000000] NIP [c000000000092430] ftrace_init_ool_stub+0x188/0x3f4 [    0.000000] LR [c000000000092414] ftrace_init_ool_stub+0x16c/0x3f4 [    0.000000] Call Trace: [    0.000000] [c000000004ba7d10] [c0000000000925c0] ftrace_init_ool_stub+0x318/0x3f4 (unreliable) [    0.000000] [c000000004ba7de0] [c000000000508de0] ftrace_process_locs+0x364/0x8e0 [    0.000000] [c000000004ba7ee0] [c000000003060908] ftrace_init+0x68/0x1c8 [    0.000000] [c000000004ba7f50] [c00000000300ee6c] start_kernel+0x1e4/0x4fc [    0.000000] [c000000004ba7fe0] [c00000000000e9a0] start_here_common+0x1c/0x20 [    0.000000] Code: 1d290018 7f9c4a14 3bbd0001 7f03c378 48844ca5 60000000 39400000 7f9dc800 39200001 7c1dc800 93b80000 7d29575e <0b090000> 4181005c 7fe3fb78 3b3c0008 [    0.000000] ---[ end trace 0000000000000000 ]--- [    0.000000] ------------[ ftrace bug ]------------ [    0.000000] ftrace failed to modify [    0.000000] [] ip6mr_vif_seq_stop+0x0/0x8 [    0.000000]  actual:   00:00:00:60 [    0.000000] Initializing ftrace call sites [    0.000000] ftrace record flags: 0 [    0.000000]  (0) [    0.000000]  expected tramp: c000000000093490 [    0.000000] ------------[ cut here ]------------ [    0.000000] WARNING: kernel/trace/ftrace.c:2209 at ftrace_bug+0x168/0x49c, CPU#0: swapper/0 [    0.000000] Modules linked in: [    0.000000] CPU: 0 UID: 0 PID: 0 Comm: swapper Tainted: G   W           6.18.0-rc2-next-20251022+ #1 VOLUNTARY [    0.000000] Tainted: [W]=WARN [    0.000000] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries [    0.000000] NIP:  c000000000508748 LR: c000000000508744 CTR: 0000000000000000 [    0.000000] REGS: c000000004ba7a90 TRAP: 0700   Tainted: G   W            (6.18.0-rc2-next-20251022+) [    0.000000] MSR:  8000000002021033   CR: 28028220  XER: 00000001 [    0.000000] CFAR: c0000000003880f8 IRQMASK: 3 [    0.000000] GPR00: c000000000508744 c000000004ba7d30 c00000000248a400 0000000000000022 [    0.000000] GPR04: 0000000000000004 0000000000000000 c00000000027abec 0000000000000001 [    0.000000] GPR08: 0000000000000001 0000000000000000 0000000000000000 a80e000000000000 [    0.000000] GPR12: c00e00000081c5d8 c0000000050b0000 0000000000000003 0000000000000001 [    0.000000] GPR16: c000000007335df8 0000000000000000 c0000000045a8ac0 c000000004c2d450 [    0.000000] GPR20: c0000000070e0108 c0000000070e0110 0000000000000013 000000000000c869 [    0.000000] GPR24: 0000000000000000 0000000000000000 000000000000b93f 0000000000000000 [    0.000000] GPR28: c000000001879a78 c000000001b93d20 c000000007335df8 c000000007335e00 [    0.000000] NIP [c000000000508748] ftrace_bug+0x168/0x49c [    0.000000] LR [c000000000508744] ftrace_bug+0x164/0x49c [    0.000000] Call Trace: [    0.000000] [c000000004ba7d30] [c000000000508744] ftrace_bug+0x164/0x49c (unreliable) [    0.000000] [c000000004ba7de0] [c000000000508dfc] ftrace_process_locs+0x380/0x8e0 [    0.000000] [c000000004ba7ee0] [c000000003060908] ftrace_init+0x68/0x1c8 [    0.000000] [c000000004ba7f50] [c00000000300ee6c] start_kernel+0x1e4/0x4fc [    0.000000] [c000000004ba7fe0] [c00000000000e9a0] start_here_common+0x1c/0x20 [    0.000000] Code: 7fe3fb78 483cea79 60000000 e93e0008 75290800 40820164 7fc3f378 4bfffa19 7c641b78 387d0fe0 4be7f975 60000000 <0fe00000> 39000001 3ce2027a 3d22fdc1 [    0.000000] ---[ end trace 0000000000000000 ]--- [    0.000000] ftrace: allocating 51305 entries in 19 pages [    0.000000] ftrace: allocated 19 pages with 3 groups [    0.000000] rcu: Hierarchical RCU implementation. [    0.000000] rcu:     RCU event tracing is enabled. > > > > Attached is the config file. > > > If you happen to fix this, please add below tag. > > > Reported-by: Venkat Rao Bagalkote > > > Regards, > > Venkat. >