On Fri, Nov 29, 2024 at 11:19 PM kernel test robot
<oliver.sang@xxxxxxxxx> wrote:
>
>
>
> Hello,
>
> kernel test robot noticed "BUG:soft_lockup-CPU##stuck_for#s![usemem:#]" on:
>
> commit: 13da30d6f9150dff876f94a3f32d555e484ad04f ("mm/readahead: fix large folio support in async readahead")
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
>
> [test failed on linux-next/master cfba9f07a1d6aeca38f47f1f472cfb0ba133d341]
>
> in testcase: vm-scalability
> version: vm-scalability-x86_64-6f4ef16-0_20241103
> with following parameters:
>
> runtime: 300s
> test: mmap-xread-seq-mt
> cpufreq_governor: performance
>
>
>
> config: x86_64-rhel-9.4
> compiler: gcc-12
> test machine: 224 threads 4 sockets Intel(R) Xeon(R) Platinum 8380H CPU @ 2.90GHz (Cooper Lake) with 192G 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/202411292300.61edbd37-lkp@xxxxxxxxx
>
>
> [ 133.054592][ C1] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [usemem:5463]
> [ 133.062611][ C1] Modules linked in: xfs intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common isst_if_mbox_msr isst_if_common skx_edac skx_edac_common nfit libnvdimm x86_pkg_temp_thermal coretemp btrfs blake2b_generic xor kvm_intel raid6_pq libcrc32c kvm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel sd_mod rapl sg intel_cstate ipmi_ssif acpi_power_meter binfmt_misc snd_pcm dax_hmem cxl_acpi snd_timer cxl_port snd ast ahci mei_me cxl_core libahci soundcore drm_shmem_helper ioatdma i2c_i801 intel_uncore einj pcspkr libata megaraid_sas drm_kms_helper mei ipmi_si acpi_ipmi i2c_smbus dca intel_pch_thermal wmi ipmi_devintf ipmi_msghandler joydev drm fuse loop dm_mod ip_tables
> [ 133.127927][ C1] CPU: 1 UID: 0 PID: 5463 Comm: usemem Not tainted 6.12.0-rc6-00041-g13da30d6f915 #1
> [ 133.137519][ C1] Hardware name: Inspur NF8260M6/NF8260M6, BIOS 06.00.01 04/22/2022
> [ 133.145595][ C1] RIP: 0010:memset_orig (arch/x86/lib/memset_64.S:71)
> [ 133.150781][ C1] Code: c1 41 89 f9 41 83 e1 07 75 70 48 89 d1 48 c1 e9 06 74 35 0f 1f 44 00 00 48 ff c9 48 89 07 48 89 47 08 48 89 47 10 48 89 47 18 <48> 89 47 20 48 89 47 28 48 89 47 30 48 89 47 38 48 8d 7f 40 75 d8
> All code
> ========
> 0: c1 41 89 f9 roll $0xf9,-0x77(%rcx)
> 4: 41 83 e1 07 and $0x7,%r9d
> 8: 75 70 jne 0x7a
> a: 48 89 d1 mov %rdx,%rcx
> d: 48 c1 e9 06 shr $0x6,%rcx
> 11: 74 35 je 0x48
> 13: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
> 18: 48 ff c9 dec %rcx
> 1b: 48 89 07 mov %rax,(%rdi)
> 1e: 48 89 47 08 mov %rax,0x8(%rdi)
> 22: 48 89 47 10 mov %rax,0x10(%rdi)
> 26: 48 89 47 18 mov %rax,0x18(%rdi)
> 2a:* 48 89 47 20 mov %rax,0x20(%rdi) <-- trapping instruction
> 2e: 48 89 47 28 mov %rax,0x28(%rdi)
> 32: 48 89 47 30 mov %rax,0x30(%rdi)
> 36: 48 89 47 38 mov %rax,0x38(%rdi)
> 3a: 48 8d 7f 40 lea 0x40(%rdi),%rdi
> 3e: 75 d8 jne 0x18
>
> Code starting with the faulting instruction
> ===========================================
> 0: 48 89 47 20 mov %rax,0x20(%rdi)
> 4: 48 89 47 28 mov %rax,0x28(%rdi)
> 8: 48 89 47 30 mov %rax,0x30(%rdi)
> c: 48 89 47 38 mov %rax,0x38(%rdi)
> 10: 48 8d 7f 40 lea 0x40(%rdi),%rdi
> 14: 75 d8 jne 0xffffffffffffffee
> [ 133.170775][ C1] RSP: 0018:ffffc900126efa20 EFLAGS: 00000206
> [ 133.177015][ C1] RAX: 0000000000000000 RBX: ffffea00a7c878c0 RCX: 0000000000000030
> [ 133.185139][ C1] RDX: 0000000000001000 RSI: 0000000000000000 RDI: ffff88a9f21e33c0
> [ 133.193229][ C1] RBP: ffff88a9f21e3000 R08: 0000000000000000 R09: 0000000000000000
> [ 133.201373][ C1] R10: ffff88a9f21e3000 R11: 0000000000001000 R12: 0000000000000000
> [ 133.209522][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 00000026b5fdf000
> [ 133.217642][ C1] FS: 00007f21a47e86c0(0000) GS:ffff888c0f680000(0000) knlGS:0000000000000000
> [ 133.226703][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 133.233410][ C1] CR2: 00005641d476a000 CR3: 0000000c4b6b6003 CR4: 00000000007726f0
> [ 133.241514][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 133.249679][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> [ 133.257776][ C1] PKRU: 55555554
> [ 133.261446][ C1] Call Trace:
> [ 133.264848][ C1] <IRQ>
> [ 133.267875][ C1] ? watchdog_timer_fn (kernel/watchdog.c:762)
> [ 133.273139][ C1] ? __pfx_watchdog_timer_fn (kernel/watchdog.c:677)
> [ 133.278704][ C1] ? __hrtimer_run_queues (kernel/time/hrtimer.c:1691 kernel/time/hrtimer.c:1755)
> [ 133.284250][ C1] ? hrtimer_interrupt (kernel/time/hrtimer.c:1820)
> [ 133.289443][ C1] ? __sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1038 arch/x86/kernel/apic/apic.c:1055)
> [ 133.295587][ C1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049)
> [ 133.301543][ C1] </IRQ>
> [ 133.304608][ C1] <TASK>
> [ 133.307641][ C1] ? asm_sysvec_apic_timer_interrupt (arch/x86/include/asm/idtentry.h:702)
> [ 133.313886][ C1] ? memset_orig (arch/x86/lib/memset_64.S:71)
> [ 133.318457][ C1] zero_user_segments (include/linux/highmem.h:280)
> [ 133.323465][ C1] iomap_readpage_iter (fs/iomap/buffered-io.c:392)
> [ 133.328698][ C1] ? xas_load (include/linux/xarray.h:175 include/linux/xarray.h:1264 lib/xarray.c:240)
> [ 133.332919][ C1] iomap_readahead (fs/iomap/buffered-io.c:514 fs/iomap/buffered-io.c:550)
> [ 133.337765][ C1] read_pages (mm/readahead.c:160)
> [ 133.342137][ C1] ? alloc_pages_mpol_noprof (mm/mempolicy.c:2267)
> [ 133.347774][ C1] page_cache_ra_unbounded (include/linux/fs.h:882 mm/readahead.c:291)
> [ 133.353303][ C1] filemap_fault (mm/filemap.c:3230 mm/filemap.c:3329)
> [ 133.357982][ C1] __do_fault (mm/memory.c:4882)
> [ 133.362292][ C1] do_read_fault (mm/memory.c:5297)
> [ 133.366985][ C1] do_pte_missing (mm/memory.c:5431 mm/memory.c:3965)
> [ 133.371754][ C1] __handle_mm_fault (mm/memory.c:5909)
> [ 133.376818][ C1] handle_mm_fault (mm/memory.c:6077)
> [ 133.381717][ C1] do_user_addr_fault (arch/x86/mm/fault.c:1339)
> [ 133.386820][ C1] exc_page_fault (arch/x86/include/asm/irqflags.h:37 arch/x86/include/asm/irqflags.h:92 arch/x86/mm/fault.c:1489 arch/x86/mm/fault.c:1539)
> [ 133.391500][ C1] asm_exc_page_fault (arch/x86/include/asm/idtentry.h:623)
> [ 133.396396][ C1] RIP: 0033:0x55578aeb9acc
> [ 133.400849][ C1] Code: 00 00 e8 b7 f8 ff ff bf 01 00 00 00 e8 0d f9 ff ff 89 c7 e8 6c ff ff ff bf 00 00 00 00 e8 fc f8 ff ff 85 d2 74 08 48 8d 04 f7 <48> 8b 00 c3 48 8d 04 f7 48 89 30 b8 00 00 00 00 c3 41 54 55 53 48
> All code
> ========
> 0: 00 00 add %al,(%rax)
> 2: e8 b7 f8 ff ff call 0xfffffffffffff8be
> 7: bf 01 00 00 00 mov $0x1,%edi
> c: e8 0d f9 ff ff call 0xfffffffffffff91e
> 11: 89 c7 mov %eax,%edi
> 13: e8 6c ff ff ff call 0xffffffffffffff84
> 18: bf 00 00 00 00 mov $0x0,%edi
> 1d: e8 fc f8 ff ff call 0xfffffffffffff91e
> 22: 85 d2 test %edx,%edx
> 24: 74 08 je 0x2e
> 26: 48 8d 04 f7 lea (%rdi,%rsi,8),%rax
> 2a:* 48 8b 00 mov (%rax),%rax <-- trapping instruction
> 2d: c3 ret
> 2e: 48 8d 04 f7 lea (%rdi,%rsi,8),%rax
> 32: 48 89 30 mov %rsi,(%rax)
> 35: b8 00 00 00 00 mov $0x0,%eax
> 3a: c3 ret
> 3b: 41 54 push %r12
> 3d: 55 push %rbp
> 3e: 53 push %rbx
> 3f: 48 rex.W
>
> Code starting with the faulting instruction
> ===========================================
> 0: 48 8b 00 mov (%rax),%rax
> 3: c3 ret
> 4: 48 8d 04 f7 lea (%rdi,%rsi,8),%rax
> 8: 48 89 30 mov %rsi,(%rax)
> b: b8 00 00 00 00 mov $0x0,%eax
> 10: c3 ret
> 11: 41 54 push %r12
> 13: 55 push %rbp
> 14: 53 push %rbx
> 15: 48 rex.W
Is this issue consistently reproducible?
I attempted to reproduce it using the mmap-xread-seq-mt test case but
was unsuccessful.
--
Regards
Yafang
