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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jason Gunthorpe , Leon Romanovsky CC: "oe-lkp@lists.linux.dev" , "lkp@intel.com" , "linux-mm@kvack.org" , Matthew Wilcox , Simon Horman , "netdev@vger.kernel.org" , "linux-rdma@vger.kernel.org" Thread-Topic: [EXTERNAL] Re: [linux-next:master] [mm, slab] 6431f06eec: WARNING:at_include/linux/mm.h:#skb_append_pagefrags Thread-Index: AQHbz7Vk8W+azlWvVUWhHurDT06HJLPoJvwg Date: Wed, 28 May 2025 16:52:24 +0000 Message-ID: References: <202505221248.595a9117-lkp@intel.com> <610d1a69-e237-43ec-b554-d52b5308ace1@suse.cz> In-Reply-To: <610d1a69-e237-43ec-b554-d52b5308ace1@suse.cz> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-publictraffictype: Email x-ms-traffictypediagnostic: BN8PR15MB2513:EE_|BY3PR15MB4884:EE_ x-ms-office365-filtering-correlation-id: 00d20a99-48b5-40ff-e755-08dd9e080562 x-ld-processed: fcf67057-50c9-4ad4-98f3-ffca64add9e9,ExtAddr x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0;ARA:13230040|10070799003|366016|1800799024|7416014|376014|38070700018|13003099007; 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charset="utf-8" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: RE: [linux-next:master] [mm, slab] 6431f06eec: WARNING:at_include/linux/mm.h:#skb_append_pagefrags X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-05-28_08,2025-05-27_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 suspectscore=0 clxscore=1011 priorityscore=1501 malwarescore=0 mlxscore=0 phishscore=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 spamscore=0 adultscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=2 engine=8.19.0-2505160000 definitions=main-2505280139 X-Rspam-User: X-Stat-Signature: k4zfnbkwbrk4n3queou93nz8tq9y987u X-Rspamd-Queue-Id: 0588880006 X-Rspamd-Server: rspam11 X-HE-Tag: 1748451150-204594 X-HE-Meta: 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 MJBN1mL2 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 wOSX0ikl lewRxodOuK1JdMnoGGKg9doJq0EQifmy408vFZxk+FCse0cELU1DotDdjVLP/nGggiROsr3LThP8GaDKWTy0RxWzDivk0Hfm69ybpm/l3AEz2NttsnFq98gZ4NnA9swkoNS4sPX4J9I= 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: List-Subscribe: List-Unsubscribe: > -----Original Message----- > From: Vlastimil Babka > Sent: Wednesday, May 28, 2025 11:46 AM > To: kernel test robot ; David S. Miller > ; Eric Dumazet ; Jakub Kicinski > ; Paolo Abeni ; Bernard Metzler > ; Jason Gunthorpe ; Leon Romanovsky > > Cc: oe-lkp@lists.linux.dev; lkp@intel.com; linux-mm@kvack.org; Matthew > Wilcox ; Simon Horman ; > netdev@vger.kernel.org; linux-rdma@vger.kernel.org > Subject: [EXTERNAL] Re: [linux-next:master] [mm, slab] 6431f06eec: > WARNING:at_include/linux/mm.h:#skb_append_pagefrags >=20 > On 5/22/25 06:54, kernel test robot wrote: > > > > > > Hello, > > > > > > we noticed the WARN added in this commit is hit in our tests. not sure = if > it's > > expected. below full report FYI. >=20 > It's expected in the sense that if somebody is doing the wrong thing, the= re > would be a report. So it seems that has now happened :) >=20 > > kernel test robot noticed > "WARNING:at_include/linux/mm.h:#skb_append_pagefrags" on: > > > > commit: 6431f06eecf44e7b8d42237cb0e166a456f491ad ("mm, slab: warn when > increasing refcount on large kmalloc page") > > https%=20 > 3A__git.kernel.org_cgit_linux_kernel_git_next_linux- > 2Dnext.git&d=3DDwIFaQ&c=3DBSDicqBQBDjDI9RkVyTcHQ&r=3D4ynb4Sj_4MUcZXbhvovE= 4tYSbqxy > OwdSiLedP4yO55g&m=3DRVwvTs1_4tv9VS6aBY_BN1Nb5XX4P80N9RLHq1UND_lRCm9uja6lY= Flrt > 1eIP6xD&s=3DgDBCZ9iGPTCbRHLz-aCIQx6RpCDBnybfljVjh1G_MjQ&e=3D master >=20 > FYI that's > https%=20 > 3A__git.kernel.org_pub_scm_linux_kernel_git_vbabka_slab.git_commit_-3Fh- > 3Dslab_for-2D6.16_testing-26id- > 3D6431f06eecf44e7b8d42237cb0e166a456f491ad&d=3DDwIFaQ&c=3DBSDicqBQBDjDI9R= kVyTcH > Q&r=3D4ynb4Sj_4MUcZXbhvovE4tYSbqxyOwdSiLedP4yO55g&m=3DRVwvTs1_4tv9VS6aBY_= BN1Nb5 > XX4P80N9RLHq1UND_lRCm9uja6lYFlrt1eIP6xD&s=3DHgoQP2p- > qH0YF0Pxt2hT1lLJjQI4CaEArKRz-4OZCUA&e=3D >=20 > so we have skb_splice_from_iter() calling skb_append_pagefrags() and that > does a get_page(). But this warning means one of the pages is a kmalloc() > with size >8kb that is using the page allocator and not slab caches. But > that 8kb threshold is an implementation detail, so we want all kmalloc() > allocated buffers to behave the same and use frozen pages and thus not > allow > get_page(). >=20 > Note skb_splice_from_iter() has above the call to skb_append_pagefrags(): >=20 > if (WARN_ON_ONCE(!sendpage_ok(page))) > goto out; >=20 > and sendpage_ok() is: >=20 > return !PageSlab(page) && page_count(page) >=3D 1; >=20 > Thus if we went ahead with frozen pages for large kmalloc(), sendpage_ok() > would start marking them as not ok, which seems like the right thing. But > this callsite would still produce a WARN_ON_ONCE(), so that suggests it's > not really expected to for kmalloc() pages to reach this code. >=20 > It's possible that some other code using sendpage_ok() elsewhere prevents > this from happening, and this WARN_ON_ONCE() is just a safety double chec= k. > Or not, and something (siw?) needs to be fixed to e.g. stop using kmalloc= () siw ckecks every page before sending via sendpage_ok(). It unsets MSG_SPLICE_PAGES flag for the current message if one page to be handed to tcp_sendmsg_locked() fails that test. Wouldn't that be sufficient? Thanks, Bernard. > and use the page allocator directly. I don't know this code so I'm just > ccing networking and siw maintainers. Thanks in advance. >=20 > Vlastimil >=20 > > > > [test failed on linux-next/master > 7bac2c97af4078d7a627500c9bcdd5b033f97718] > > > > in testcase: blktests > > version: blktests-x86_64-613b837-1_20250520 > > with following parameters: > > > > disk: 1SSD > > test: nvme-group-00 > > nvme_trtype: rdma > > use_siw: true > > > > > > > > config: x86_64-rhel-9.4-func > > compiler: gcc-12 > > test machine: 8 threads Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz (Skylak= e) > with 16G memory > > > > (please refer to attached dmesg/kmsg for entire log/backtrace) > > > > > > > > If you fix the issue in a separate patch/commit (i.e. not just a new > version of > > the same patch/commit), kindly add following tags > > | Reported-by: kernel test robot > > | Closes: https%=20 > 3A__lore.kernel.org_oe-2Dlkp_202505221248.595a9117-2Dlkp- > 40intel.com&d=3DDwIFaQ&c=3DBSDicqBQBDjDI9RkVyTcHQ&r=3D4ynb4Sj_4MUcZXbhvov= E4tYSbqx > yOwdSiLedP4yO55g&m=3DRVwvTs1_4tv9VS6aBY_BN1Nb5XX4P80N9RLHq1UND_lRCm9uja6l= YFlr > t1eIP6xD&s=3DDPDmeNRUMUu0ZG0SDNI9LtFWXdtU6aTDbKw4Jlc6V9k&e=3D > > > > > > [ 130.177740][ T2674] ------------[ cut here ]------------ > > [ 130.183066][ T2674] WARNING: CPU: 6 PID: 2674 at > include/linux/mm.h:1552 skb_append_pagefrags (kbuild/obj/consumer/x86_64- > rhel-9.4-func/include/linux/mm.h:1552 kbuild/obj/consumer/x86_64-rhel-9.4- > func/net/core/skbuff.c:4518) > > [ 130.192642][ T2674] Modules linked in: siw ib_uverbs nvmet_rdma nvmet > nvme_rdma nvme_fabrics rdma_cm nvme_auth nvme_core iw_cm ib_cm ib_core xfs > dm_multipath btrfs blake2b_generic xor zstd_compress raid6_pq > intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp > snd_soc_avs snd_hda_codec_hdmi coretemp snd_soc_hda_codec snd_hda_ext_core > sd_mod snd_ctl_led snd_soc_core sg snd_hda_codec_realtek kvm_intel > snd_hda_codec_generic snd_compress ipmi_devintf snd_hda_scodec_component > ipmi_msghandler i915 kvm snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi > intel_gtt snd_hda_codec cec irqbypass ghash_clmulni_intel drm_buddy > snd_hda_core sha512_ssse3 ttm snd_hwdep sha256_ssse3 drm_display_helper > sha1_ssse3 snd_pcm ahci mei_wdt drm_client_lib drm_kms_helper rapl libahci > mei_me snd_timer intel_cstate video wmi_bmof i2c_i801 snd intel_uncore mei > pcspkr soundcore i2c_smbus libata serio_raw intel_pmc_core > intel_pch_thermal intel_vsec pmt_telemetry wmi acpi_pad pmt_class > binfmt_misc drm fuse loop dm_mod ip_tables > > [ 130.192875][ T2674] [last unloaded: ib_uverbs] > > [ 130.286562][ T2674] CPU: 6 UID: 0 PID: 2674 Comm: siw_tx/6 Tainted: G > S 6.15.0-rc3-00001-g6431f06eecf4 #1 PREEMPT(voluntary) > > [ 130.299313][ T2674] Tainted: [S]=3DCPU_OUT_OF_SPEC > > [ 130.303929][ T2674] Hardware name: HP HP Z240 SFF Workstation/802E, > BIOS N51 Ver. 01.63 10/05/2017 > > [ 130.312877][ T2674] RIP: 0010:skb_append_pagefrags > (kbuild/obj/consumer/x86_64-rhel-9.4-func/include/linux/mm.h:1552 > kbuild/obj/consumer/x86_64-rhel-9.4-func/net/core/skbuff.c:4518) > > [ 130.318708][ T2674] Code: a2 ff ff 48 8b 4c 24 18 4c 8b 4c 24 10 8b 54 > 24 08 4c 8b 14 24 e9 1b fb ff ff 4c 8d 60 ff e9 47 fb ff ff 0f 0b e9 bb fb > ff ff <0f> 0b e9 7b fb ff ff b8 a6 ff ff ff e9 d7 fc ff ff 0f 0b 31 ff e9 > > All code > > =3D=3D=3D=3D=3D=3D=3D=3D > > 0: a2 ff ff 48 8b 4c 24 movabs %al,0x4c18244c8b48ffff > > 7: 18 4c > > 9: 8b 4c 24 10 mov 0x10(%rsp),%ecx > > d: 8b 54 24 08 mov 0x8(%rsp),%edx > > 11: 4c 8b 14 24 mov (%rsp),%r10 > > 15: e9 1b fb ff ff jmp 0xfffffffffffffb35 > > 1a: 4c 8d 60 ff lea -0x1(%rax),%r12 > > 1e: e9 47 fb ff ff jmp 0xfffffffffffffb6a > > 23: 0f 0b ud2 > > 25: e9 bb fb ff ff jmp 0xfffffffffffffbe5 > > 2a:* 0f 0b ud2 <-- trapping instruction > > 2c: e9 7b fb ff ff jmp 0xfffffffffffffbac > > 31: b8 a6 ff ff ff mov $0xffffffa6,%eax > > 36: e9 d7 fc ff ff jmp 0xfffffffffffffd12 > > 3b: 0f 0b ud2 > > 3d: 31 ff xor %edi,%edi > > 3f: e9 .byte 0xe9 > > > > Code starting with the faulting instruction > > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > > 0: 0f 0b ud2 > > 2: e9 7b fb ff ff jmp 0xfffffffffffffb82 > > 7: b8 a6 ff ff ff mov $0xffffffa6,%eax > > c: e9 d7 fc ff ff jmp 0xfffffffffffffce8 > > 11: 0f 0b ud2 > > 13: 31 ff xor %edi,%edi > > 15: e9 .byte 0xe9 > > [ 130.338106][ T2674] RSP: 0018:ffffc90000ec7220 EFLAGS: 00010246 > > [ 130.344005][ T2674] RAX: 00000000000000f8 RBX: ffffea00086b0000 RCX: > ffff8883ffd08840 > > [ 130.351795][ T2674] RDX: 0000000000000001 RSI: 1ffffd40010d6006 RDI: > ffffea00086b0030 > > [ 130.359609][ T2674] RBP: ffff8883ffd08780 R08: 0000000000000011 R09: > ffff8883ffd08848 > > [ 130.367426][ T2674] R10: 0000000000000001 R11: 0000000000000001 R12: > ffffea00086b0000 > > [ 130.375247][ T2674] R13: 0000000000000001 R14: 0000000000001000 R15: > 0000000000000000 > > [ 130.383044][ T2674] FS: 0000000000000000(0000) > GS:ffff888426d45000(0000) knlGS:0000000000000000 > > [ 130.391798][ T2674] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > [ 130.398234][ T2674] CR2: 000055b575c2cd28 CR3: 000000043c06e004 CR4: > 00000000003726f0 > > [ 130.406050][ T2674] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > > [ 130.413861][ T2674] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000400 > > [ 130.421668][ T2674] Call Trace: > > [ 130.424805][ T2674] > > [ 130.427594][ T2674] ? __pfx_tcp_established_options > (kbuild/obj/consumer/x86_64-rhel-9.4-func/net/ipv4/tcp_output.c:989) > > [ 130.433409][ T2674] skb_splice_from_iter (kbuild/obj/consumer/x86_64- > rhel-9.4-func/net/core/skbuff.c:7256) > > [ 130.438455][ T2674] ? __pfx_skb_splice_from_iter > (kbuild/obj/consumer/x86_64-rhel-9.4-func/net/core/skbuff.c:7223) > > [ 130.444015][ T2674] ? __sk_mem_raise_allocated > (kbuild/obj/consumer/x86_64-rhel-9.4-func/net/core/sock.c:3335) > > [ 130.449674][ T2674] ? __sk_mem_schedule (kbuild/obj/consumer/x86_64- > rhel-9.4-func/net/core/sock.c:3353) > > [ 130.454470][ T2674] tcp_sendmsg_locked (kbuild/obj/consumer/x86_64- > rhel-9.4-func/net/ipv4/tcp.c:1275) > > [ 130.459521][ T2674] ? tcp_sendmsg (kbuild/obj/consumer/x86_64-rhel-9.= 4- > func/net/ipv4/tcp.c:1370) > > [ 130.463786][ T2674] ? sock_sendmsg (kbuild/obj/consumer/x86_64-rhel- > 9.4-func/net/socket.c:712 kbuild/obj/consumer/x86_64-rhel-9.4- > func/net/socket.c:727 kbuild/obj/consumer/x86_64-rhel-9.4- > func/net/socket.c:750) > > [ 130.468307][ T2674] ? __pfx_tcp_sendmsg_locked > (kbuild/obj/consumer/x86_64-rhel-9.4-func/net/ipv4/tcp.c:1061) > > [ 130.473697][ T2674] ? __pfx_sock_sendmsg (kbuild/obj/consumer/x86_64- > rhel-9.4-func/net/socket.c:739) > > [ 130.478561][ T2674] ? _raw_spin_lock_bh (kbuild/obj/consumer/x86_64- > rhel-9.4-func/arch/x86/include/asm/atomic.h:107 kbuild/obj/consumer/x86_6= 4- > rhel-9.4-func/include/linux/atomic/atomic-arch-fallback.h:2170 > kbuild/obj/consumer/x86_64-rhel-9.4-func/include/linux/atomic/atomic- > instrumented.h:1302 kbuild/obj/consumer/x86_64-rhel-9.4-func/include/asm- > generic/qspinlock.h:111 kbuild/obj/consumer/x86_64-rhel-9.4- > func/include/linux/spinlock.h:187 kbuild/obj/consumer/x86_64-rhel-9.4- > func/include/linux/spinlock_api_smp.h:127 kbuild/obj/consumer/x86_64-rhel- > 9.4-func/kernel/locking/spinlock.c:178) > > [ 130.483350][ T2674] ? __pfx_tcp_release_cb (kbuild/obj/consumer/x86_6= 4- > rhel-9.4-func/net/ipv4/tcp_output.c:1151) > > [ 130.488394][ T2674] siw_tcp_sendpages+0x1f1/0x4f0 siw > > [ 130.494322][ T2674] ? __pfx_siw_tcp_sendpages+0x10/0x10 siw > > [ 130.500763][ T2674] siw_tx_hdt (kbuild/obj/consumer/x86_64-rhel-9.4- > func/drivers/infiniband/sw/siw/siw_qp_tx.c:379 kbuild/obj/consumer/x86_64- > rhel-9.4-func/drivers/infiniband/sw/siw/siw_qp_tx.c:586) siw > > [ 130.505558][ T2674] ? __pfx_sched_balance_find_src_group > (kbuild/obj/consumer/x86_64-rhel-9.4-func/kernel/sched/fair.c:11298) > > [ 130.511811][ T2674] ? __pfx_siw_tx_hdt (kbuild/obj/consumer/x86_64- > rhel-9.4-func/drivers/infiniband/sw/siw/siw_qp_tx.c:431) siw > > [ 130.517045][ T2674] ? sched_balance_rq (kbuild/obj/consumer/x86_64- > rhel-9.4-func/kernel/sched/fair.c:11770) > > [ 130.521998][ T2674] ? dl_scaled_delta_exec (kbuild/obj/consumer/x86_6= 4- > rhel-9.4-func/kernel/sched/deadline.c:1481) > > [ 130.527133][ T2674] ? place_entity (kbuild/obj/consumer/x86_64-rhel- > 9.4-func/kernel/sched/fair.c:5206) > > [ 130.531567][ T2674] ? __pfx__raw_spin_lock (kbuild/obj/consumer/x86_6= 4- > rhel-9.4-func/kernel/locking/spinlock.c:153) > > [ 130.536606][ T2674] ? pick_eevdf (kbuild/obj/consumer/x86_64-rhel-9.4- > func/kernel/sched/fair.c:946) > > [ 130.540970][ T2674] ? __resched_curr (kbuild/obj/consumer/x86_64-rhel- > 9.4-func/arch/x86/include/asm/bitops.h:60 kbuild/obj/consumer/x86_64-rhel- > 9.4-func/include/asm-generic/bitops/instrumented-atomic.h:29 > kbuild/obj/consumer/x86_64-rhel-9.4-func/include/linux/thread_info.h:97 > kbuild/obj/consumer/x86_64-rhel-9.4-func/kernel/sched/core.c:1113) > > [ 130.545678][ T2674] ? update_curr (kbuild/obj/consumer/x86_64-rhel-9.= 4- > func/kernel/sched/fair.c:1236) > > [ 130.550031][ T2674] ? xas_load (kbuild/obj/consumer/x86_64-rhel-9.4- > func/include/linux/xarray.h:175 kbuild/obj/consumer/x86_64-rhel-9.4- > func/include/linux/xarray.h:1264 kbuild/obj/consumer/x86_64-rhel-9.4- > func/lib/xarray.c:241) > > [ 130.554136][ T2674] ? xa_load (kbuild/obj/consumer/x86_64-rhel-9.4- > func/lib/xarray.c:1613) > > [ 130.558136][ T2674] ? __pfx_xa_load (kbuild/obj/consumer/x86_64-rhel- > 9.4-func/lib/xarray.c:1613) > > [ 130.562569][ T2674] ? ttwu_do_activate (kbuild/obj/consumer/x86_64- > rhel-9.4-func/kernel/sched/core.c:3705 kbuild/obj/consumer/x86_64-rhel-9.= 4- > func/kernel/sched/core.c:3735) > > [ 130.567431][ T2674] ? update_rq_clock_task (kbuild/obj/consumer/x86_6= 4- > rhel-9.4-func/kernel/sched/sched.h:1325 kbuild/obj/consumer/x86_64-rhel- > 9.4-func/kernel/sched/pelt.h:120 kbuild/obj/consumer/x86_64-rhel-9.4- > func/kernel/sched/core.c:797) > > [ 130.572650][ T2674] ? siw_mem_id2obj (kbuild/obj/consumer/x86_64-rhel- > 9.4-func/drivers/infiniband/sw/siw/siw_mem.c:52) siw > > [ 130.577866][ T2674] ? __pfx_siw_try_1seg (kbuild/obj/consumer/x86_64- > rhel-9.4-func/drivers/infiniband/sw/siw/siw_qp_tx.c:50) siw > > [ 130.583264][ T2674] ? __pfx_try_to_wake_up (kbuild/obj/consumer/x86_6= 4- > rhel-9.4-func/kernel/sched/core.c:4175) > > [ 130.588310][ T2674] ? finish_task_switch+0x155/0x750 > > [ 130.593957][ T2674] siw_qp_sq_proc_tx (kbuild/obj/consumer/x86_64-rhe= l- > 9.4-func/drivers/infiniband/sw/siw/siw_qp_tx.c:882) siw > > [ 130.599352][ T2674] ? siw_activate_tx (kbuild/obj/consumer/x86_64-rhe= l- > 9.4-func/drivers/infiniband/sw/siw/siw_qp.c:996) siw > > [ 130.604670][ T2674] siw_qp_sq_process (kbuild/obj/consumer/x86_64-rhe= l- > 9.4-func/drivers/infiniband/sw/siw/siw_qp_tx.c:1038) siw > > [ 130.609905][ T2674] siw_sq_resume (kbuild/obj/consumer/x86_64-rhel-9.= 4- > func/drivers/infiniband/sw/siw/siw_qp_tx.c:1170) siw > > [ 130.614789][ T2674] siw_run_sq (kbuild/obj/consumer/x86_64-rhel-9.4- > func/drivers/infiniband/sw/siw/siw_qp_tx.c:1258) siw > > [ 130.619508][ T2674] ? __pfx_siw_run_sq (kbuild/obj/consumer/x86_64- > rhel-9.4-func/drivers/infiniband/sw/siw/siw_qp_tx.c:1236) siw > > [ 130.624735][ T2674] ? __pfx__raw_spin_lock_irqsave > (kbuild/obj/consumer/x86_64-rhel-9.4-func/kernel/locking/spinlock.c:161) > > [ 130.630482][ T2674] ? __pfx_autoremove_wake_function > (kbuild/obj/consumer/x86_64-rhel-9.4-func/kernel/sched/wait.c:383) > > [ 130.636383][ T2674] ? __kthread_parkme (kbuild/obj/consumer/x86_64- > rhel-9.4-func/arch/x86/include/asm/bitops.h:206 (discriminator 15) > kbuild/obj/consumer/x86_64-rhel-9.4-func/arch/x86/include/asm/bitops.h:238 > (discriminator 15) kbuild/obj/consumer/x86_64-rhel-9.4-func/include/asm- > generic/bitops/instrumented-non-atomic.h:142 (discriminator 15) > kbuild/obj/consumer/x86_64-rhel-9.4-func/kernel/kthread.c:291 > (discriminator 15)) > > [ 130.641160][ T2674] ? __pfx_siw_run_sq (kbuild/obj/consumer/x86_64- > rhel-9.4-func/drivers/infiniband/sw/siw/siw_qp_tx.c:1236) siw > > [ 130.646377][ T2674] kthread (kbuild/obj/consumer/x86_64-rhel-9.4- > func/kernel/kthread.c:464) > > [ 130.650291][ T2674] ? __pfx_kthread (kbuild/obj/consumer/x86_64-rhel- > 9.4-func/kernel/kthread.c:413) > > [ 130.654724][ T2674] ? __pfx__raw_spin_lock_irq > (kbuild/obj/consumer/x86_64-rhel-9.4-func/kernel/locking/spinlock.c:169) > > [ 130.660098][ T2674] ? __pfx_kthread (kbuild/obj/consumer/x86_64-rhel- > 9.4-func/kernel/kthread.c:413) > > [ 130.664534][ T2674] ret_from_fork (kbuild/obj/consumer/x86_64-rhel-9.= 4- > func/arch/x86/kernel/process.c:159) > > [ 130.668809][ T2674] ? __pfx_kthread (kbuild/obj/consumer/x86_64-rhel- > 9.4-func/kernel/kthread.c:413) > > [ 130.673247][ T2674] ret_from_fork_asm (kbuild/obj/consumer/x86_64-rhe= l- > 9.4-func/arch/x86/entry/entry_64.S:258) > > [ 130.677869][ T2674] > > [ 130.680755][ T2674] ---[ end trace 0000000000000000 ]--- > > > > > > > > The kernel config and materials to reproduce are available at: > > https%=20 > 3A__download.01.org_0day-2Dci_archive_20250522_202505221248.595a9117-2Dlk= p- > 40intel.com&d=3DDwIFaQ&c=3DBSDicqBQBDjDI9RkVyTcHQ&r=3D4ynb4Sj_4MUcZXbhvov= E4tYSbqx > yOwdSiLedP4yO55g&m=3DRVwvTs1_4tv9VS6aBY_BN1Nb5XX4P80N9RLHq1UND_lRCm9uja6l= YFlr > t1eIP6xD&s=3D0zFCWDVF-T2ahG-ugOYYBxHQfJHaj8ndY77_YbCzPNY&e=3D > > > > > >