Re: [PATCH v5 1/1] mm: report per-page metadata information

From: kernel test robot
Date: Thu Nov 16 2023 - 21:43:19 EST


hi, Sourav Panda,

we are not sure if this patch is NACKed since
https://lore.kernel.org/all/2023110205-enquirer-sponge-4f35@gregkh/

but seems you still have plan for next version
https://lore.kernel.org/all/CA+CK2bCFgwLXp=pUTKezWtRoCKiDC41DqGXx_kahg0UcB53sPw@xxxxxxxxxxxxxx/

so still send below report to you FYI about what we observed in our tests.


Hello,

kernel test robot noticed "WARNING:at_mm/vmstat.c:#__mod_node_page_state" on:

commit: 77348e22542ef30ac2e12e111fdbe2debe4c8bf7 ("[PATCH v5 1/1] mm: report per-page metadata information")
url: https://github.com/intel-lab-lkp/linux/commits/Sourav-Panda/mm-report-per-page-metadata-information/20231102-071047
base: https://git.kernel.org/cgit/linux/kernel/git/gregkh/driver-core.git effd7c70eaa0440688b60b9d419243695ede3c45
patch link: https://lore.kernel.org/all/20231101230816.1459373-2-souravpanda@xxxxxxxxxx/
patch subject: [PATCH v5 1/1] mm: report per-page metadata information

in testcase: kernel-selftests
version: kernel-selftests-x86_64-60acb023-1_20230329
with following parameters:

sc_nr_hugepages: 2
group: mm



compiler: gcc-12
test machine: 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @ 3.00GHz (Cascade Lake) with 32G 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 <oliver.sang@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202311171013.fb3e52d3-oliver.sang@xxxxxxxxx


kern :warn : [ 625.944628] ------------[ cut here ]------------
kern :warn : [ 625.945623] WARNING: CPU: 30 PID: 16422 at mm/vmstat.c:393 __mod_node_page_state (mm/vmstat.c:393)
kern :warn : [ 625.946550] Modules linked in: test_hmm(+) netconsole openvswitch nf_conncount nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 intel_rapl_msr intel_rapl_common nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp btrfs blake2b_generic xor coretemp kvm_intel raid6_pq zstd_compress kvm libcrc32c irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel sha512_ssse3 rapl intel_cstate nvme nvme_core ahci t10_pi ipmi_devintf libahci ipmi_msghandler wmi_bmof mxm_wmi intel_wmi_thunderbolt crc64_rocksoft_generic i2c_i801 crc64_rocksoft intel_uncore wdat_wdt crc64 libata mei_me i2c_smbus ioatdma mei dca wmi binfmt_misc fuse drm ip_tables
kern :warn : [ 625.951800] CPU: 30 PID: 16422 Comm: modprobe Not tainted 6.6.0-rc4-00022-g77348e22542e #1
kern :warn : [ 625.952689] Hardware name: Gigabyte Technology Co., Ltd. X299 UD4 Pro/X299 UD4 Pro-CF, BIOS F8a 04/27/2021
kern :warn : [ 625.953692] RIP: 0010:__mod_node_page_state (mm/vmstat.c:393)
kern :warn : [ 625.954310] Code: 1c 24 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 78 ad 77 7e a9 ff ff ff 7f 75 bb 65 8b 05 9e 79 76 7e 85 c0 74 b0 <0f> 0b eb ac 49 83 fd 2c 77 7b 4e 8d 34 ed c8 a5 02 00 be 08 00 00
All code
========
0: 1c 24 sbb $0x24,%al
2: 48 83 c4 08 add $0x8,%rsp
6: 5b pop %rbx
7: 5d pop %rbp
8: 41 5c pop %r12
a: 41 5d pop %r13
c: 41 5e pop %r14
e: 41 5f pop %r15
10: c3 retq
11: 65 8b 05 78 ad 77 7e mov %gs:0x7e77ad78(%rip),%eax # 0x7e77ad90
18: a9 ff ff ff 7f test $0x7fffffff,%eax
1d: 75 bb jne 0xffffffffffffffda
1f: 65 8b 05 9e 79 76 7e mov %gs:0x7e76799e(%rip),%eax # 0x7e7679c4
26: 85 c0 test %eax,%eax
28: 74 b0 je 0xffffffffffffffda
2a:* 0f 0b ud2 <-- trapping instruction
2c: eb ac jmp 0xffffffffffffffda
2e: 49 83 fd 2c cmp $0x2c,%r13
32: 77 7b ja 0xaf
34: 4e 8d 34 ed c8 a5 02 lea 0x2a5c8(,%r13,8),%r14
3b: 00
3c: be .byte 0xbe
3d: 08 00 or %al,(%rax)
...

Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: eb ac jmp 0xffffffffffffffb0
4: 49 83 fd 2c cmp $0x2c,%r13
8: 77 7b ja 0x85
a: 4e 8d 34 ed c8 a5 02 lea 0x2a5c8(,%r13,8),%r14
11: 00
12: be .byte 0xbe
13: 08 00 or %al,(%rax)
...
kern :warn : [ 625.956115] RSP: 0018:ffffc90000d7f548 EFLAGS: 00010202
kern :warn : [ 625.956726] RAX: 0000000000000001 RBX: 00000003ffff8000 RCX: 1ffffffff0aeddef
kern :warn : [ 625.957526] RDX: 0000000000000000 RSI: 0000000000000026 RDI: ffff88889fffe5c0
kern :warn : [ 625.958414] RBP: ffff88889ffd4000 R08: 0000000000000007 R09: fffffbfff091ebd4
kern :warn : [ 625.959207] R10: ffffffff848f5ea3 R11: 0000000000000001 R12: 00000000000427ec
kern :warn : [ 625.960008] R13: 000000000000002b R14: 0000000000000200 R15: 00000000000427c0
kern :warn : [ 625.960786] FS: 00007fca350f5740(0000) GS:ffff88880f100000(0000) knlGS:0000000000000000
kern :warn : [ 625.961664] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kern :warn : [ 625.962342] CR2: 00007f643c75d000 CR3: 00000002c7c44003 CR4: 00000000003706e0
kern :warn : [ 625.963132] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kern :warn : [ 625.963923] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kern :warn : [ 625.964702] Call Trace:
kern :warn : [ 625.965089] <TASK>
kern :warn : [ 625.965436] ? __warn (kernel/panic.c:673)
kern :warn : [ 625.965898] ? __mod_node_page_state (mm/vmstat.c:393)
kern :warn : [ 625.966450] ? report_bug (lib/bug.c:180 lib/bug.c:219)
kern :warn : [ 625.966947] ? handle_bug (arch/x86/kernel/traps.c:237)
kern :warn : [ 625.967409] ? exc_invalid_op (arch/x86/kernel/traps.c:258 (discriminator 1))
kern :warn : [ 625.967914] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:568)
kern :warn : [ 625.968445] ? __mod_node_page_state (mm/vmstat.c:393)
kern :warn : [ 625.969014] __populate_section_memmap (mm/sparse-vmemmap.c:475)
kern :warn : [ 625.969591] ? kasan_set_track (mm/kasan/common.c:52)
kern :warn : [ 625.970103] sparse_add_section (mm/sparse.c:867 mm/sparse.c:907)
kern :warn : [ 625.970628] ? sparse_buffer_alloc (mm/sparse.c:897)
kern :warn : [ 625.971177] __add_pages (mm/memory_hotplug.c:403)
kern :warn : [ 625.971650] add_pages (arch/x86/mm/init_64.c:956)
kern :warn : [ 625.972113] pagemap_range (mm/memremap.c:250)
kern :warn : [ 625.972609] ? memremap_compat_align (mm/memremap.c:163)
kern :warn : [ 625.973162] ? percpu_ref_init (arch/x86/include/asm/atomic64_64.h:20 include/linux/atomic/atomic-arch-fallback.h:2602 include/linux/atomic/atomic-long.h:79 include/linux/atomic/atomic-instrumented.h:3196 lib/percpu-refcount.c:98)
kern :warn : [ 625.973678] memremap_pages (mm/memremap.c:367)
kern :warn : [ 625.974187] ? pagemap_range (mm/memremap.c:292)
kern :warn : [ 625.974697] ? kasan_set_track (mm/kasan/common.c:52)
kern :warn : [ 625.975209] ? __kmalloc_node_track_caller (include/trace/events/kmem.h:54 include/trace/events/kmem.h:54 mm/slab_common.c:1024 mm/slab_common.c:1043)
kern :warn : [ 625.975802] dmirror_allocate_chunk (include/linux/err.h:72 lib/test_hmm.c:552) test_hmm
kern :warn : [ 625.976483] hmm_dmirror_init (lib/test_hmm.c:267) test_hmm
kern :warn : [ 625.977092] ? 0xffffffffc14b1000
kern :warn : [ 625.977539] do_one_initcall (init/main.c:1232)
kern :warn : [ 625.978044] ? trace_event_raw_event_initcall_level (init/main.c:1223)
kern :warn : [ 625.978718] ? kasan_unpoison (mm/kasan/shadow.c:160 mm/kasan/shadow.c:194)
kern :warn : [ 625.979261] do_init_module (kernel/module/main.c:2530)
kern :warn : [ 625.979761] load_module (kernel/module/main.c:2981)
kern :warn : [ 625.980267] ? post_relocation (kernel/module/main.c:2830)
kern :warn : [ 625.980782] ? kernel_read_file (arch/x86/include/asm/atomic.h:53 include/linux/atomic/atomic-arch-fallback.h:979 include/linux/atomic/atomic-instrumented.h:436 include/linux/fs.h:2740 fs/kernel_read_file.c:122)
kern :warn : [ 625.981318] ? __x64_sys_fspick (fs/kernel_read_file.c:38)
kern :warn : [ 625.981858] ? init_module_from_file (kernel/module/main.c:3148)
kern :warn : [ 625.982408] init_module_from_file (kernel/module/main.c:3148)
kern :warn : [ 625.982959] ? __ia32_sys_init_module (kernel/module/main.c:3124)
kern :warn : [ 625.983508] ? __lock_release+0x111/0x440
kern :warn : [ 625.984078] ? idempotent_init_module (kernel/module/main.c:3094 kernel/module/main.c:3159)
kern :warn : [ 625.984743] ? idempotent_init_module (kernel/module/main.c:3094 kernel/module/main.c:3159)
kern :warn : [ 625.985347] ? do_raw_spin_unlock (arch/x86/include/asm/atomic.h:23 include/linux/atomic/atomic-arch-fallback.h:444 include/linux/atomic/atomic-instrumented.h:33 include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:100 kernel/locking/spinlock_debug.c:140)
kern :warn : [ 625.985895] idempotent_init_module (kernel/module/main.c:3165)
kern :warn : [ 625.986448] ? init_module_from_file (kernel/module/main.c:3152)
kern :warn : [ 625.987029] ? security_capable (security/security.c:946 (discriminator 13))
kern :warn : [ 625.987540] __x64_sys_finit_module (include/linux/file.h:45 kernel/module/main.c:3187 kernel/module/main.c:3169 kernel/module/main.c:3169)
kern :warn : [ 625.988090] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80)
kern :warn : [ 625.988576] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120)
kern :warn : [ 625.989174] RIP: 0033:0x7fca352005a9
kern :warn : [ 625.989645] Code: 08 89 e8 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 27 08 0d 00 f7 d8 64 89 01 48
All code
========
0: 08 89 e8 5b 5d c3 or %cl,-0x3ca2a418(%rcx)
6: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
d: 00 00 00
10: 90 nop
11: 48 89 f8 mov %rdi,%rax
14: 48 89 f7 mov %rsi,%rdi
17: 48 89 d6 mov %rdx,%rsi
1a: 48 89 ca mov %rcx,%rdx
1d: 4d 89 c2 mov %r8,%r10
20: 4d 89 c8 mov %r9,%r8
23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9
28: 0f 05 syscall
2a:* 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction
30: 73 01 jae 0x33
32: c3 retq
33: 48 8b 0d 27 08 0d 00 mov 0xd0827(%rip),%rcx # 0xd0861
3a: f7 d8 neg %eax
3c: 64 89 01 mov %eax,%fs:(%rcx)
3f: 48 rex.W

Code starting with the faulting instruction
===========================================
0: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax
6: 73 01 jae 0x9
8: c3 retq
9: 48 8b 0d 27 08 0d 00 mov 0xd0827(%rip),%rcx # 0xd0837
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/20231117/202311171013.fb3e52d3-oliver.sang@xxxxxxxxx



--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki