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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://lore.kernel.org/oe-lkp/202506300953.8b18c4e0-lkp@intel.com [ 167.002786][ T7295] ------------[ cut here ]------------ [ 167.008126][ T7295] strnlen: detected buffer overflow: 13 byte read of buffer size 12 [ 167.016029][ T7295] WARNING: CPU: 3 PID: 7295 at lib/string_helpers.c:1035 __fortify_report (lib/string_helpers.c:1035) [ 167.025263][ T7295] Modules linked in: xfs btrfs intel_rapl_msr blake2b_generic intel_rapl_common xor zstd_compress snd_hda_codec_hdmi raid6_pq x86_pkg_temp_thermal snd_soc_avs intel_powerclamp snd_soc_hda_codec snd_hda_codec_realtek coretemp snd_hda_codec_generic snd_hda_ext_core snd_hda_scodec_component sd_mod kvm_intel sg snd_soc_core ipmi_devintf ipmi_msghandler i915 snd_compress kvm snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec intel_gtt cec snd_hda_core irqbypass ghash_clmulni_intel sha512_ssse3 snd_hwdep drm_buddy sha1_ssse3 snd_pcm mei_wdt ttm rapl ahci intel_cstate wmi_bmof snd_timer drm_display_helper libahci mei_me drm_client_lib snd mei intel_uncore drm_kms_helper ie31200_edac libata pcspkr soundcore serio_raw i2c_i801 video i2c_smbus intel_pch_thermal intel_pmc_core pmt_telemetry wmi pmt_class acpi_pad intel_pmc_ssram_telemetry intel_vsec binfmt_misc loop fuse drm dm_mod ip_tables [ 167.106191][ T7295] CPU: 3 UID: 0 PID: 7295 Comm: xfs_io Tainted: G S 6.16.0-rc2-00007-g977e0a4036f9 #1 PREEMPT(voluntary) [ 167.118796][ T7295] Tainted: [S]=CPU_OUT_OF_SPEC [ 167.123437][ T7295] Hardware name: HP HP Z238 Microtower Workstation/8183, BIOS N51 Ver. 01.63 10/05/2017 [ 167.133014][ T7295] RIP: 0010:__fortify_report (lib/string_helpers.c:1035) [ 167.138351][ T7295] Code: 59 40 84 ed 48 c7 c0 00 77 54 84 48 c7 c1 40 77 54 84 48 8b 34 dd 00 84 54 84 48 0f 44 c8 48 c7 c7 80 77 54 84 e8 c1 57 c3 fe <0f> 0b 48 83 c4 10 5b 5d c3 cc cc cc cc 48 89 34 24 48 c7 c7 a0 75 All code ======== 0: 59 pop %rcx 1: 40 84 ed test %bpl,%bpl 4: 48 c7 c0 00 77 54 84 mov $0xffffffff84547700,%rax b: 48 c7 c1 40 77 54 84 mov $0xffffffff84547740,%rcx 12: 48 8b 34 dd 00 84 54 mov -0x7bab7c00(,%rbx,8),%rsi 19: 84 1a: 48 0f 44 c8 cmove %rax,%rcx 1e: 48 c7 c7 80 77 54 84 mov $0xffffffff84547780,%rdi 25: e8 c1 57 c3 fe call 0xfffffffffec357eb 2a:* 0f 0b ud2 <-- trapping instruction 2c: 48 83 c4 10 add $0x10,%rsp 30: 5b pop %rbx 31: 5d pop %rbp 32: c3 ret 33: cc int3 34: cc int3 35: cc int3 36: cc int3 37: 48 89 34 24 mov %rsi,(%rsp) 3b: 48 rex.W 3c: c7 .byte 0xc7 3d: c7 (bad) 3e: a0 .byte 0xa0 3f: 75 .byte 0x75 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 48 83 c4 10 add $0x10,%rsp 6: 5b pop %rbx 7: 5d pop %rbp 8: c3 ret 9: cc int3 a: cc int3 b: cc int3 c: cc int3 d: 48 89 34 24 mov %rsi,(%rsp) 11: 48 rex.W 12: c7 .byte 0xc7 13: c7 (bad) 14: a0 .byte 0xa0 15: 75 .byte 0x75 [ 167.157828][ T7295] RSP: 0018:ffffc90009d6fa10 EFLAGS: 00010286 [ 167.163765][ T7295] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81931ee5 [ 167.171607][ T7295] RDX: 1ffff1106f236180 RSI: 0000000000000008 RDI: ffff8883791b0c00 [ 167.179457][ T7295] RBP: 0000000000000000 R08: 0000000000000001 R09: fffff520013adefd [ 167.187300][ T7295] R10: ffffc90009d6f7ef R11: 0000000000000001 R12: ffff8881731be540 [ 167.195139][ T7295] R13: 00007ffd1f891350 R14: ffff8881731be06c R15: ffff8881c6ef8138 [ 167.202998][ T7295] FS: 00007f6019ba0840(0000) GS:ffff8883f1da6000(0000) knlGS:0000000000000000 [ 167.211808][ T7295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 167.218267][ T7295] CR2: 00007f6019b9fd58 CR3: 0000000248c0c004 CR4: 00000000003726f0 [ 167.226104][ T7295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 167.233955][ T7295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 167.241801][ T7295] Call Trace: [ 167.244960][ T7295] [ 167.247767][ T7295] ? __asan_memset (mm/kasan/shadow.c:84) [ 167.252239][ T7295] __fortify_panic (lib/string_helpers.c:1043) [ 167.256593][ T7295] xfs_file_ioctl (fs/xfs/xfs_ioctl.c:1420) xfs [ 167.262288][ T7295] ? __pfx_xfs_file_ioctl (fs/xfs/xfs_ioctl.c:1188) xfs [ 167.268213][ T7295] ? put_pid (kernel/pid.c:332 kernel/pid.c:459) [ 167.272850][ T7295] ? kernel_clone (kernel/fork.c:2559) [ 167.277398][ T7295] ? __pfx_kernel_clone (kernel/fork.c:2559) [ 167.282288][ T7295] ? recalc_sigpending (arch/x86/include/asm/bitops.h:206 arch/x86/include/asm/bitops.h:238 include/asm-generic/bitops/instrumented-non-atomic.h:142 include/linux/thread_info.h:126 kernel/signal.c:180) [ 167.287262][ T7295] ? __do_sys_clone3 (kernel/fork.c:2903) [ 167.292071][ T7295] ? __pfx_do_vfs_ioctl (fs/ioctl.c:804) [ 167.296962][ T7295] ? _raw_spin_lock_irq (arch/x86/include/asm/atomic.h:107 include/linux/atomic/atomic-arch-fallback.h:2170 include/linux/atomic/atomic-instrumented.h:1302 include/asm-generic/qspinlock.h:111 include/linux/spinlock.h:187 include/linux/spinlock_api_smp.h:120 kernel/locking/spinlock.c:170) [ 167.301866][ T7295] ? __pfx__raw_spin_lock_irq (kernel/locking/spinlock.c:169) [ 167.307276][ T7295] ? recalc_sigpending (arch/x86/include/asm/bitops.h:206 arch/x86/include/asm/bitops.h:238 include/asm-generic/bitops/instrumented-non-atomic.h:142 include/linux/thread_info.h:126 kernel/signal.c:180) [ 167.312252][ T7295] ? sigprocmask (kernel/signal.c:3259) [ 167.316712][ T7295] ? __pfx_sigprocmask (kernel/signal.c:3236) [ 167.321514][ T7295] ? fdget (include/linux/file.h:57 fs/file.c:1161 fs/file.c:1166) [ 167.325444][ T7295] __x64_sys_ioctl (fs/ioctl.c:52 fs/ioctl.c:907 fs/ioctl.c:893 fs/ioctl.c:893) [ 167.330078][ T7295] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 167.334451][ T7295] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 167.339007][ T7295] ? handle_mm_fault (mm/memory.c:6274 mm/memory.c:6427) [ 167.343810][ T7295] ? do_user_addr_fault (arch/x86/include/asm/atomic.h:93 include/linux/atomic/atomic-arch-fallback.h:949 include/linux/atomic/atomic-instrumented.h:401 include/linux/refcount.h:389 include/linux/refcount.h:432 include/linux/mmap_lock.h:142 include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) [ 167.348872][ T7295] ? exc_page_fault (arch/x86/include/asm/irqflags.h:37 arch/x86/include/asm/irqflags.h:114 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) [ 167.353412][ T7295] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 167.359161][ T7295] RIP: 0033:0x7f6019ed0d1b [ 167.363441][ T7295] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00 All code ======== 0: 00 48 89 add %cl,-0x77(%rax) 3: 44 24 18 rex.R and $0x18,%al 6: 31 c0 xor %eax,%eax 8: 48 8d 44 24 60 lea 0x60(%rsp),%rax d: c7 04 24 10 00 00 00 movl $0x10,(%rsp) 14: 48 89 44 24 08 mov %rax,0x8(%rsp) 19: 48 8d 44 24 20 lea 0x20(%rsp),%rax 1e: 48 89 44 24 10 mov %rax,0x10(%rsp) 23: b8 10 00 00 00 mov $0x10,%eax 28: 0f 05 syscall 2a:* 89 c2 mov %eax,%edx <-- trapping instruction 2c: 3d 00 f0 ff ff cmp $0xfffff000,%eax 31: 77 1c ja 0x4f 33: 48 8b 44 24 18 mov 0x18(%rsp),%rax 38: 64 fs 39: 48 rex.W 3a: 2b .byte 0x2b 3b: 04 25 add $0x25,%al 3d: 28 00 sub %al,(%rax) ... Code starting with the faulting instruction =========================================== 0: 89 c2 mov %eax,%edx 2: 3d 00 f0 ff ff cmp $0xfffff000,%eax 7: 77 1c ja 0x25 9: 48 8b 44 24 18 mov 0x18(%rsp),%rax e: 64 fs f: 48 rex.W 10: 2b .byte 0x2b 11: 04 25 add $0x25,%al 13: 28 00 sub %al,(%rax) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250630/202506300953.8b18c4e0-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki