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Mon, 10 Mar 2025 14:50:09 +0000 Date: Mon, 10 Mar 2025 22:49:49 +0800 From: kernel test robot To: Alistair Popple CC: , , Andrew Morton , Dan Williams , "Alison Schofield" , David Hildenbrand , Alexander Gordeev , Asahi Lina , Balbir Singh , Bjorn Helgaas , Catalin Marinas , Christian Borntraeger , Christoph Hellwig , Chunyan Zhang , "Darrick J. 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HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: iIm/7mZmHbO53XPn40NhUnN18Rzcf6cOc5YAii5EeWJIMdwxWHuRR60msgmDsZ5IkDbU1mEn3F1e+Z93UiZJmQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL1PR11MB5955 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "WARNING:at_fs/dax.c:#dax_folio_put" on: commit: 9e9148ba90757a1db81472371f582de2b936b0d6 ("fs/dax: properly refcoun= t fs dax pages") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master [test failed on linux-next/master 0a2f889128969dab41861b6e40111aa03dc57014] in testcase: nvml version: nvml-x86_64-c0abd814f-1_20240621 with following parameters: test: pmem group: ctl nr_pmem: 1 fs: ext4 mount_option: dax bp_memmap: 32G!4G config: x86_64-rhel-9.4-func compiler: gcc-12 test machine: 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @ 3.00G= Hz (Cascade Lake) with 128G 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 versio= n of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202503102229.122fbd6c-lkp@intel.co= m kern :warn : [ 148.701197] ------------[ cut here ]------------ kern :warn : [ 148.702568] WARNING: CPU: 1 PID: 42454 at fs/dax.c:415 dax_= folio_put+0x288/0x390=20 kern :warn : [ 148.704151] Modules linked in: intel_rapl_msr intel_rapl_= common intel_uncore_frequency intel_uncore_frequency_common skx_edac_common= nfit x86_pkg_temp_thermal intel_powerclamp coretemp snd_soc_avs snd_soc_hd= a_codec snd_hda_codec_realtek snd_hda_ext_core snd_soc_core snd_hda_codec_g= eneric amdgpu kvm_intel snd_compress snd_hda_scodec_component snd_hda_codec= _hdmi btrfs kvm amdxcp blake2b_generic gpu_sched xor drm_panel_backlight_qu= irks zstd_compress cec drm_buddy drm_ttm_helper snd_hda_intel ttm snd_intel= _dspcfg ghash_clmulni_intel snd_intel_sdw_acpi drm_exec snd_hda_codec raid6= _pq sha512_ssse3 drm_suballoc_helper sd_mod sha256_ssse3 drm_display_helper= sha1_ssse3 sg snd_hda_core rapl intel_cstate nd_pmem snd_hwdep drm_client_= lib drm_kms_helper snd_pcm nd_btt ahci dax_pmem mei_me nvme libahci snd_tim= er ipmi_devintf nd_e820 ipmi_msghandler libata libnvdimm intel_uncore nvme_= core snd ioatdma video mei i2c_i801 wdat_wdt pcspkr wmi_bmof mxm_wmi intel_= wmi_thunderbolt i2c_smbus soundcore dca wmi binfmt_misc drm fuse dm_mod loo= p kern :warn : [ 148.704342] ip_tables kern :warn : [ 148.721353] CPU: 1 UID: 0 PID: 42454 Comm: ctl_prefault N= ot tainted 6.14.0-rc3-00230-g9e9148ba9075 #1 kern :warn : [ 148.723223] Hardware name: Gigabyte Technology Co., Ltd. = X299 UD4 Pro/X299 UD4 Pro-CF, BIOS F8a 04/27/2021 kern :warn : [ 148.725158] RIP: dax_folio_put+0x288/0x390=20 kern :warn : [ 148.726771] Code: 7e 48 48 89 f9 48 c1 e9 03 80 3c 01 00 0f = 85 e4 00 00 00 49 8b 6e 48 40 f6 c5 01 0f 84 7f fe ff ff 48 83 ed 01 e9 79 = fe ff ff <0f> 0b e9 43 ff ff ff 48 b8 00 00 00 00 00 fc ff df 49 8d 7e 20 4= 8 All code =3D=3D=3D=3D=3D=3D=3D=3D 0: 7e 48 jle 0x4a 2: 48 89 f9 mov %rdi,%rcx 5: 48 c1 e9 03 shr $0x3,%rcx 9: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1) d: 0f 85 e4 00 00 00 jne 0xf7 13: 49 8b 6e 48 mov 0x48(%r14),%rbp 17: 40 f6 c5 01 test $0x1,%bpl 1b: 0f 84 7f fe ff ff je 0xfffffffffffffea0 21: 48 83 ed 01 sub $0x1,%rbp 25: e9 79 fe ff ff jmp 0xfffffffffffffea3 2a:* 0f 0b ud2 <-- trapping instruction 2c: e9 43 ff ff ff jmp 0xffffffffffffff74 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df=20 3b: 49 8d 7e 20 lea 0x20(%r14),%rdi 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: 0f 0b ud2 2: e9 43 ff ff ff jmp 0xffffffffffffff4a 7: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax e: fc ff df=20 11: 49 8d 7e 20 lea 0x20(%r14),%rdi 15: 48 rex.W kern :warn : [ 148.730733] RSP: 0000:ffffc9002aeff7b8 EFLAGS: 00010002 kern :warn : [ 148.732384] RAX: 0000000000000001 RBX: 0000000000000000 R= CX: 0000000000000000 kern :warn : [ 148.734315] RDX: fffff94005c04007 RSI: 0000000000000004 R= DI: ffffea002e020034 kern :warn : [ 148.736117] RBP: ffffea002e020034 R08: 0000000000000000 R= 09: fffff94005c04006 kern :warn : [ 148.738003] R10: ffffea002e020037 R11: ffffc9002aeffac8 R= 12: 0000000000000000 kern :warn : [ 148.739805] R13: ffffea002e020000 R14: ffffea002e020000 R= 15: dffffc0000000000 kern :warn : [ 148.741650] FS: 00007f45f6590200(0000) GS:ffff889fc1c800= 00(0000) knlGS:0000000000000000 kern :warn : [ 148.743525] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005= 0033 kern :warn : [ 148.745226] CR2: 00007f45f5a00000 CR3: 0000000c0b1c4004 C= R4: 00000000003726f0 kern :warn : [ 148.747051] DR0: 0000000000000000 DR1: 0000000000000000 D= R2: 0000000000000000 kern :warn : [ 148.748840] DR3: 0000000000000000 DR6: 00000000fffe0ff0 D= R7: 0000000000000400 kern :warn : [ 148.750714] Call Trace: kern :warn : [ 148.752118] kern :warn : [ 148.753608] ? __warn (kernel/panic.c:748)=20 kern :warn : [ 148.755149] ? dax_folio_put+0x288/0x390=20 kern :warn : [ 148.756894] ? report_bug (lib/bug.c:180 lib/bug.c:219)=20 kern :warn : [ 148.758502] ? handle_bug (arch/x86/kernel/traps.c:285)=20 kern :warn : [ 148.759986] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (= discriminator 1))=20 kern :warn : [ 148.761556] ? asm_exc_invalid_op (arch/x86/include/asm/idte= ntry.h:574)=20 kern :warn : [ 148.763137] ? dax_folio_put+0x288/0x390=20 kern :warn : [ 148.764686] ? dax_folio_put+0x1a5/0x390=20 kern :warn : [ 148.766315] dax_insert_entry (fs/dax.c:1077)=20 kern :warn : [ 148.767757] ? __pfx_dax_insert_entry (fs/dax.c:1051)=20 kern :warn : [ 148.769250] ? dax_iomap_direct_access (fs/dax.c:1279)=20 kern :warn : [ 148.770756] dax_fault_iter (fs/dax.c:1871)=20 kern :warn : [ 148.772160] ? __pfx_dax_fault_iter (fs/dax.c:1839)=20 kern :warn : [ 148.773714] ? iomap_iter (fs/iomap/iter.c:90)=20 kern :warn : [ 148.775069] dax_iomap_pmd_fault (fs/dax.c:2067)=20 kern :warn : [ 148.776430] ? __pfx_dax_iomap_pmd_fault (fs/dax.c:2006)=20 kern :warn : [ 148.777894] ? mmap_region (arch/x86/include/asm/atomic.h:60= include/linux/atomic/atomic-arch-fallback.h:1210 include/linux/atomic/atom= ic-instrumented.h:593 include/linux/fs.h:612 mm/vma.c:2557)=20 kern :warn : [ 148.779177] ? jbd2__journal_start (fs/jbd2/transaction.c:50= 5)=20 kern :warn : [ 148.780522] ext4_dax_huge_fault (fs/ext4/file.c:766)=20 kern :warn : [ 148.781904] ? __pfx_ext4_dax_huge_fault (fs/ext4/file.c:722= )=20 kern :warn : [ 148.783187] ? __pfx_pmd_write (mm/gup.c:223)=20 kern :warn : [ 148.784361] __handle_mm_fault (mm/memory.c:5826 mm/memory.c= :6075)=20 kern :warn : [ 148.785585] ? __pfx___handle_mm_fault (mm/memory.c:5994)=20 kern :warn : [ 148.786791] handle_mm_fault (mm/memory.c:6254)=20 kern :warn : [ 148.787909] do_user_addr_fault (arch/x86/mm/fault.c:1338)=20 kern :warn : [ 148.789053] exc_page_fault (arch/x86/include/asm/irqflags.h= :37 arch/x86/include/asm/irqflags.h:92 arch/x86/mm/fault.c:1488 arch/x86/mm= /fault.c:1538)=20 kern :warn : [ 148.790173] asm_exc_page_fault (arch/x86/include/asm/idtent= ry.h:574)=20 kern :warn : [ 148.791294] RIP: 0033:0x7f45f6f59b4f kern :warn : [ 148.792300] Code: 45 f0 48 8b 45 f0 48 8b 4d f8 48 03 41 18 = 48 89 45 e8 48 8b 45 f0 48 3b 45 e8 0f 83 97 00 00 00 48 8b 45 f0 8a 08 48 = 8b 45 f0 <88> 08 48 8d 05 48 8d 05 00 8b 00 48 83 f8 00 0f 84 57 00 00 00 4= 8 All code =3D=3D=3D=3D=3D=3D=3D=3D 0: 45 rex.RB 1: f0 48 8b 45 f0 lock mov -0x10(%rbp),%rax 6: 48 8b 4d f8 mov -0x8(%rbp),%rcx a: 48 03 41 18 add 0x18(%rcx),%rax e: 48 89 45 e8 mov %rax,-0x18(%rbp) 12: 48 8b 45 f0 mov -0x10(%rbp),%rax 16: 48 3b 45 e8 cmp -0x18(%rbp),%rax 1a: 0f 83 97 00 00 00 jae 0xb7 20: 48 8b 45 f0 mov -0x10(%rbp),%rax 24: 8a 08 mov (%rax),%cl 26: 48 8b 45 f0 mov -0x10(%rbp),%rax 2a:* 88 08 mov %cl,(%rax) <-- trapping instruction 2c: 48 8d 05 48 8d 05 00 lea 0x58d48(%rip),%rax # 0x58d7b 33: 8b 00 mov (%rax),%eax 35: 48 83 f8 00 cmp $0x0,%rax 39: 0f 84 57 00 00 00 je 0x96 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: 88 08 mov %cl,(%rax) 2: 48 8d 05 48 8d 05 00 lea 0x58d48(%rip),%rax # 0x58d51 9: 8b 00 mov (%rax),%eax b: 48 83 f8 00 cmp $0x0,%rax f: 0f 84 57 00 00 00 je 0x6c 15: 48 rex.W kern :warn : [ 148.795265] RSP: 002b:00007fff424b56a0 EFLAGS: 00010287 kern :warn : [ 148.796428] RAX: 00007f45f5a00000 RBX: 0000000000200000 R= CX: 000055a297c07600 kern :warn : [ 148.797827] RDX: 0000000000000000 RSI: 000055a297c16360 R= DI: 000055a297c076e0 kern :warn : [ 148.799163] RBP: 00007fff424b56a0 R08: 0000000000000000 R= 09: 0000000000000073 kern :warn : [ 148.800486] R10: 0000000000000000 R11: 0000000000000202 R= 12: 00007fff424b65b5 kern :warn : [ 148.801886] R13: 00007fff424b5ce0 R14: 0000000000800000 R= 15: 0000000000800000 kern :warn : [ 148.803216] kern :warn : [ 148.804116] ---[ end trace 0000000000000000 ]--- The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250310/202503102229.122fbd6c-lkp@= intel.com --=20 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki