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See Documentation/c= ore-api/kobject.rst. user :notice: [ 317.655347] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (946234217) =3D=3D 0 (0) kern :warn : [ 317.655778] [ T37035] WARNING: CPU: 0 PID: 37035 at driv= ers/base/core.c:2567 device_release (drivers/base/core.c:2567 (discriminato= r 2)) kern :warn : [ 317.657485] [ T37035] Modules linked in: test_hmm(-) net= console intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncor= e_frequency_common btrfs blake2b_generic xor zstd_compress raid6_pq skx_eda= c_common nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp sd_mod corete= mp sg ghash_clmulni_intel snd_hda_codec_alc882 snd_hda_codec_atihdmi rapl s= nd_hda_codec_realtek_lib intel_cstate snd_hda_codec_generic snd_hda_codec_h= dmi amdgpu amdxcp drm_panel_backlight_quirks gpu_sched drm_buddy drm_ttm_he= lper snd_soc_avs ttm drm_exec drm_suballoc_helper snd_soc_hda_codec snd_hda= _intel snd_hda_ext_core drm_display_helper cec snd_hda_codec drm_client_lib= snd_soc_core snd_hda_core drm_kms_helper snd_intel_dspcfg snd_intel_sdw_ac= pi snd_compress ahci video snd_hwdep wmi_bmof mxm_wmi intel_wmi_thunderbolt= snd_pcm crc16 intel_uncore nvme libahci snd_timer wdat_wdt pcspkr snd i2c_= i801 mei_me nvme_core libata ioatdma i2c_smbus soundcore mei dca wmi binfmt= _misc fuse drm nfnetlink sch_fq_codel user :notice: [ 317.657659] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (1601004915) =3D=3D 0 (0) kern :warn : [ 317.664626] [ T37035] CPU: 0 UID: 0 PID: 37035 Comm: mod= probe Tainted: G S W 6.18.0-rc5-00287-gfe9d31fd1ab6 #1 PREEM= PT(voluntary) kern :warn : [ 317.664633] [ T37035] Tainted: [S]=3DCPU_OUT_OF_SPEC, [W= ]=3DWARN kern :warn : [ 317.665386] [ T37035] Hardware name: Gigabyte Technology= Co., Ltd. X299 UD4 Pro/X299 UD4 Pro-CF, BIOS F8a 04/27/2021 kern :warn : [ 317.665388] [ T37035] RIP: 0010:device_release (drivers/= base/core.c:2567 (discriminator 2)) user :notice: [ 317.667615] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (1835365481) =3D=3D 0 (0) kern :warn : [ 317.668021] [ T37035] Code: 48 8d 7b 50 48 89 fa 48 c1 e= a 03 80 3c 02 00 0f 85 88 00 00 00 48 8b 73 50 48 85 f6 74 13 48 c7 c7 80 4= 4 6e 84 e8 27 22 72 fe <0f> 0b e9 0b ff ff ff 48 b8 00 00 00 00 00 fc ff df= 48 89 da 48 c1 All code =3D=3D=3D=3D=3D=3D=3D=3D 0: 48 8d 7b 50 lea 0x50(%rbx),%rdi 4: 48 89 fa mov %rdi,%rdx 7: 48 c1 ea 03 shr $0x3,%rdx b: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) f: 0f 85 88 00 00 00 jne 0x9d 15: 48 8b 73 50 mov 0x50(%rbx),%rsi 19: 48 85 f6 test %rsi,%rsi 1c: 74 13 je 0x31 1e: 48 c7 c7 80 44 6e 84 mov $0xffffffff846e4480,%rdi 25: e8 27 22 72 fe call 0xfffffffffe722251 2a:* 0f 0b ud2 <-- trapping instruction 2c: e9 0b ff ff ff jmp 0xffffffffffffff3c 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df=20 3b: 48 89 da mov %rbx,%rdx 3e: 48 rex.W 3f: c1 .byte 0xc1 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 0b ff ff ff jmp 0xffffffffffffff12 7: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax e: fc ff df=20 11: 48 89 da mov %rbx,%rdx 14: 48 rex.W 15: c1 .byte 0xc1 kern :warn : [ 317.668026] [ T37035] RSP: 0018:ffffc90002e2fb80 EFLAGS:= 00010286 kern :warn : [ 317.669216] [ T37035] RAX: 0000000000000000 RBX: fffffff= fc4416c30 RCX: ffffffff81a5aee3 user :notice: [ 317.672000] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (1313157699) =3D=3D 0 (0) kern :warn : [ 317.672376] [ T37035] RDX: 0000000000000000 RSI: 0000000= 000000008 RDI: ffff88873aa31680 kern :warn : [ 317.673101] [ T37035] RBP: ffff8881dc954c00 R08: 0000000= 000000001 R09: fffff520005c5f2a kern :warn : [ 317.673104] [ T37035] R10: ffffc90002e2f957 R11: 205d353= 330373354 R12: 0000000000000000 user :notice: [ 317.674900] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (858873683) =3D=3D 0 (0) kern :warn : [ 317.675266] [ T37035] R13: 0000000000000000 R14: ffff888= 257da0000 R15: 0000000000000000 kern :warn : [ 317.675269] [ T37035] FS: 00007fa66ff48640(0000) GS:fff= f8887b351f000(0000) knlGS:0000000000000000 kern :warn : [ 317.676656] [ T37035] CS: 0010 DS: 0000 ES: 0000 CR0: 0= 000000080050033 kern :warn : [ 317.678396] [ T37035] CR2: 00007fff1a350b00 CR3: 0000000= 893dfe003 CR4: 00000000003706f0 user :notice: [ 317.678579] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (1601004915) =3D=3D 0 (0) kern :warn : [ 317.679054] [ T37035] Call Trace: kern :warn : [ 317.679056] [ T37035] kern :warn : [ 317.679793] [ T37035] kobject_cleanup (lib/kobject.c:69= 3) kern :warn : [ 317.680963] [ T37035] hmm_dmirror_exit (lib/test_hmm.c:1= 90) test_hmm user :notice: [ 317.681254] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (1835365481) =3D=3D 0 (0) kern :warn : [ 317.681422] [ T37035] __do_sys_delete_module+0x2fc/0x50= 0 kern :warn : [ 317.682158] [ T37035] ? __pfx___do_sys_delete_module+0x= 10/0x10 kern :warn : [ 317.683446] [ T37035] ? do_syscall_64 (include/linux/ir= q-entry-common.h:257 include/linux/entry-common.h:212 arch/x86/entry/syscal= l_64.c:100) user :notice: [ 317.683833] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (1887007839) =3D=3D 0 (0) kern :warn : [ 317.683846] [ T37035] ? do_syscall_64 (arch/x86/entry/s= yscall_64.c:113) kern :warn : [ 317.684567] [ T37035] ? do_sys_openat2 (fs/open.c:1422) kern :warn : [ 317.685597] [ T37035] ? do_sys_openat2 (fs/open.c:1422) kern :warn : [ 317.686009] [ T37035] ? do_syscall_64 (arch/x86/include= /asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:119 include/linux/entry-= common.h:124 arch/x86/entry/syscall_64.c:90) user :notice: [ 317.686129] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (827344229) =3D=3D 0 (0) kern :warn : [ 317.686389] [ T37035] do_syscall_64 (arch/x86/entry/sys= call_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminato= r 1)) kern :warn : [ 317.687120] [ T37035] ? fput_close_sync (fs/file_table.= c:571) kern :warn : [ 317.688153] [ T37035] ? fput_close_sync (fs/file_table.= c:571) kern :warn : [ 317.688565] [ T37035] ? ksys_read (fs/read_write.c:715) user :notice: [ 317.688677] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (1953063476) =3D=3D 0 (0) kern :warn : [ 317.688916] [ T37035] ? __pfx_ksys_read (fs/read_write.= c:705) kern :warn : [ 317.689651] [ T37035] ? __pfx___x64_sys_openat (fs/open= .c:1463) kern :warn : [ 317.690749] [ T37035] ? trace_hardirqs_on_prepare (incl= ude/trace/events/preemptirq.h:40 (discriminator 2) kernel/trace/trace_preem= ptirq.c:62 (discriminator 2) kernel/trace/trace_preemptirq.c:59 (discrimina= tor 2)) user :notice: [ 317.691227] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (1601200493) =3D=3D 0 (0) kern :warn : [ 317.691231] [ T37035] ? do_syscall_64 (include/linux/ir= q-entry-common.h:257 include/linux/entry-common.h:212 arch/x86/entry/syscal= l_64.c:100) kern :warn : [ 317.691953] [ T37035] ? trace_hardirqs_on_prepare (incl= ude/trace/events/preemptirq.h:40 (discriminator 2) kernel/trace/trace_preem= ptirq.c:62 (discriminator 2) kernel/trace/trace_preemptirq.c:59 (discrimina= tor 2)) kern :warn : [ 317.691957] [ T37035] ? do_syscall_64 (arch/x86/entry/s= yscall_64.c:113) kern :warn : [ 317.693460] [ T37035] ? trace_hardirqs_on_prepare (incl= ude/trace/events/preemptirq.h:40 (discriminator 2) kernel/trace/trace_preem= ptirq.c:62 (discriminator 2) kernel/trace/trace_preemptirq.c:59 (discrimina= tor 2)) user :notice: [ 317.693514] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (1953718895) =3D=3D 0 (0) kern :warn : [ 317.693924] [ T37035] ? do_syscall_64 (arch/x86/entry/s= yscall_64.c:113) kern :warn : [ 317.694652] [ T37035] ? rcu_read_unlock (include/linux/= rcupdate.h:895 (discriminator 1)) kern :warn : [ 317.695684] [ T37035] ? lock_release (include/trace/eve= nts/lock.h:69 (discriminator 2) kernel/locking/lockdep.c:5879 (discriminato= r 2)) kern :warn : [ 317.696080] [ T37035] ? handle_mm_fault (mm/memory.c:64= 13 mm/memory.c:6566) user :notice: [ 317.696189] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (7037793) =3D=3D 0 (0) kern :warn : [ 317.696481] [ T37035] ? __put_unused_fd (arch/x86/inclu= de/asm/bitops.h:222 arch/x86/include/asm/bitops.h:233 include/asm-generic/b= itops/instrumented-non-atomic.h:142 fs/file.c:346 fs/file.c:629) kern :warn : [ 317.697199] [ T37035] ? exc_page_fault (arch/x86/includ= e/asm/irqflags.h:26 arch/x86/include/asm/irqflags.h:109 arch/x86/include/as= m/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) kern :warn : [ 317.698247] [ T37035] ? lock_release (include/trace/eve= nts/lock.h:69 (discriminator 2) kernel/locking/lockdep.c:5879 (discriminato= r 2)) kern :warn : [ 317.698638] [ T37035] ? do_user_addr_fault (arch/x86/in= clude/asm/atomic.h:93 (discriminator 4) include/linux/atomic/atomic-arch-fa= llback.h:949 (discriminator 4) include/linux/atomic/atomic-instrumented.h:4= 01 (discriminator 4) include/linux/refcount.h:389 (discriminator 4) include= /linux/refcount.h:432 (discriminator 4) include/linux/mmap_lock.h:143 (disc= riminator 4) include/linux/mmap_lock.h:182 (discriminator 4) arch/x86/mm/fa= ult.c:1338 (discriminator 4)) user :notice: [ 317.698763] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (825383519) =3D=3D 0 (0) kern :warn : [ 317.699066] [ T37035] ? irqentry_exit_to_user_mode (inc= lude/linux/irq-entry-common.h:257 kernel/entry/common.c:75) kern :warn : [ 317.699783] [ T37035] ? trace_hardirqs_on_prepare (incl= ude/trace/events/preemptirq.h:40 (discriminator 2) kernel/trace/trace_preem= ptirq.c:62 (discriminator 2) kernel/trace/trace_preemptirq.c:59 (discrimina= tor 2)) kern :warn : [ 317.701011] [ T37035] entry_SYSCALL_64_after_hwframe (a= rch/x86/entry/entry_64.S:130) user :notice: [ 317.701460] [ T618] # # # hmm-tests.c:511:anon_write_p= rot:Expected ptr[i] (1601070439) =3D=3D 0 (0) kern :warn : [ 317.701488] [ T37035] RIP: 0033:0x7fa670144417 kern :warn : [ 317.702225] [ T37035] Code: 73 01 c3 48 8b 0d e1 59 0d 0= 0 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 0= 0 b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d b1 59 0d 00 f7= d8 64 89 01 48 All code =3D=3D=3D=3D=3D=3D=3D=3D 0: 73 01 jae 0x3 2: c3 ret 3: 48 8b 0d e1 59 0d 00 mov 0xd59e1(%rip),%rcx # 0xd59eb a: f7 d8 neg %eax c: 64 89 01 mov %eax,%fs:(%rcx) f: 48 83 c8 ff or $0xffffffffffffffff,%rax 13: c3 ret 14: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 1b: 00 00 00=20 1e: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 23: b8 b0 00 00 00 mov $0xb0,%eax 28: 0f 05 syscall 2a:* 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping = instruction 30: 73 01 jae 0x33 32: c3 ret 33: 48 8b 0d b1 59 0d 00 mov 0xd59b1(%rip),%rcx # 0xd59eb 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W 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: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax 6: 73 01 jae 0x9 8: c3 ret 9: 48 8b 0d b1 59 0d 00 mov 0xd59b1(%rip),%rcx # 0xd59c1 10: f7 d8 neg %eax 12: 64 89 01 mov %eax,%fs:(%rcx) 15: 48 rex.W The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20251211/202512112128.e5e07e77-lkp@= intel.com --=20 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki