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Tue, 7 Apr 2026 05:44:19 +0000 (GMT) From: Shivang Upadhyay To: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Cc: maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org, kees@kernel.org, tony.luck@intel.com, gpiccoli@igalia.com, ritesh.list@gmail.com, rppt@kernel.org, Shivang Upadhyay , Hari Bathini , Mahesh Salgaonkar , Shirisha G , Sourabh Jain Subject: [PATCH] ppc/fadump: invoke kmsg_dump in fadump panic path Date: Tue, 7 Apr 2026 11:13:41 +0530 Message-ID: <20260407054341.308710-1-shivangu@linux.ibm.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Authority-Analysis: v=2.4 cv=FKArAeos c=1 sm=1 tr=0 ts=69d499bc cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VnNF1IyMAAAA:8 a=pGLkceISAAAA:8 a=-8xlvo7cLD9n2LxdQYwA:9 X-Proofpoint-ORIG-GUID: bLPW3yWZt0f-L80K2F-6HtkyB23tqNN2 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDA3MDA0OCBTYWx0ZWRfXw3xRALYazEZ1 q+zgy6fy/V+hULYR+Vtq+JiDJbH1uqElt/fLKtMQwO7le5Ri0xi88f18s1+vu4ec35xZUbHOxs9 Iq+t3PMXpCkxxr0ozFx8I2LgCS/gbh4XEQ+z6KaErXHSfM4/db6qJJF0rVvTz7ke9mV4NEmXWvZ k2SFT16M9/NmbljOxdiG/PeO5HNQ/qcVT+rWhof03G3IMIoSIkDkdGQVyxYeoXWWGHGmG/uXSb/ WYib1oCxPG5NFPySFy/fFO+EL/1ATuCoW7QVCdPlTfmMrJmQD5gaIyTbO4gUtGuD+jpoTwG/ob8 o/dOiCwXXKMPysJ+2jMcSmlKqZuCLlAzccVGNNRzYyH0AAkCq0H8cVvoNT+UPWwuqNhsLFe66Ef +qbDqpUm0U4YmvKVCYIlwybQPDV7d79e11RQ3Nd75X1Xk77LvFtvGgWSbMd8ZWNIl53FmeAGKkI vv5C+5fcS3WwJvwBK2Q== X-Proofpoint-GUID: RtH_LuYadJylsEq2r28vwalDKR3upyRN X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-07_02,2026-04-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 clxscore=1011 lowpriorityscore=0 adultscore=0 bulkscore=0 suspectscore=0 priorityscore=1501 impostorscore=0 spamscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604010000 definitions=main-2604070048 Content-Type: text/plain; charset="utf-8" fadump is registered in panic_notifier_list and gets triggered before kmsg_dump_desc() in the panic path. As a result, kmsg_dumpers (e.g. pstore) are not executed. Invoke kmsg_dump_desc() from the fadump handler to ensure kmsg_dumpers are called during panic. Cc: Hari Bathini Cc: Madhavan Srinivasan Cc: Mahesh Salgaonkar Cc: Michael Ellerman Cc: Ritesh Harjani (IBM) Reported-by: Shirisha G Suggested-by: Sourabh Jain Signed-off-by: Shivang Upadhyay --- arch/powerpc/kernel/setup-common.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup= -common.c index b1761909c23f..c329b071643d 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -68,6 +68,7 @@ #include #include #include +#include =20 #include "setup.h" =20 @@ -748,6 +749,8 @@ static int ppc_panic_fadump_handler(struct notifier_blo= ck *this, * If firmware-assisted dump has been registered then trigger * its callback and let the firmware handles everything else. */ + kmsg_dump_desc(KMSG_DUMP_PANIC, (char *)ptr); + crash_fadump(NULL, ptr); =20 return NOTIFY_DONE; --=20 2.53.0