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Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 49 f7 00 40 00 00 00 testq $0x40,(%r8) 9: 75 04 jne 0xf b: 31 c9 xor %ecx,%ecx d: eb 05 jmp 0x14 f: 41 0f b6 48 40 movzbl 0x40(%r8),%ecx 14: b8 .byte 0xb8 ... [ 33.305617][ T1] RSP: 0000:ffffd2b500013758 EFLAGS: 00010206 [ 33.308164][ T1] RAX: 00000000ff000000 RBX: ffff8afbc1151000 RCX: 00000000ffffff01 [ 33.311355][ T1] RDX: ffff8afac0000000 RSI: ffff8afbc1151000 RDI: fffff31e80000000 [ 33.314664][ T1] RBP: 00000000ffffffea R08: fffff31e84045440 R09: 0000000000000000 [ 33.317962][ T1] R10: ffff8afbc1151000 R11: ffffffff89ff2090 R12: ffff8afbc3133220 [ 33.322047][ T1] R13: ffff8afc76ef1108 R14: ffff8afbc3133e00 R15: ffff8afbc1151800 [ 33.325523][ T1] FS: 0000000000000000(0000) GS:ffff8aff63a29000(0000) knlGS:0000000000000000 [ 33.329151][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.331822][ T1] CR2: ffff8afefffff000 CR3: 00000002e1e20000 CR4: 00000000000406f0 [ 33.335127][ T1] Call Trace: [ 33.340398][ T1] [ 33.341827][ T1] kfree_sensitive (mm/slab_common.c:1234) [ 33.343783][ T1] mpi_free (lib/crypto/mpi/mpiutil.c:?) [ 33.345494][ T1] rsa_enc (crypto/rsa.c:62) [ 33.347230][ T1] rsassa_pkcs1_verify (include/linux/crypto.h:383 crypto/rsassa-pkcs1.c:256) [ 33.349482][ T1] public_key_verify_signature (crypto/asymmetric_keys/public_key.c:432) [ 33.352192][ T1] ? __kmalloc_noprof (include/linux/kernel.h:?) [ 33.354454][ T1] ? asymmetric_key_generate_id (crypto/asymmetric_keys/asymmetric_type.c:147) [ 33.357247][ T1] x509_check_for_self_signed (crypto/asymmetric_keys/x509_public_key.c:126) [ 33.359744][ T1] x509_cert_parse (crypto/asymmetric_keys/x509_cert_parser.c:130) [ 33.361690][ T1] x509_key_preparse (crypto/asymmetric_keys/x509_public_key.c:157) [ 33.368645][ T1] asymmetric_key_preparse (crypto/asymmetric_keys/asymmetric_type.c:409) [ 33.371160][ T1] __key_create_or_update (security/keys/key.c:858) [ 33.373639][ T1] key_create_or_update (security/keys/key.c:1021) [ 33.376003][ T1] x509_load_certificate_list (crypto/asymmetric_keys/x509_loader.c:31) [ 33.378485][ T1] ? load_module_cert (certs/system_keyring.c:280) [ 33.380708][ T1] do_one_initcall (init/main.c:1281) [ 33.382872][ T1] ? crng_make_state (include/linux/spinlock.h:406 drivers/char/random.c:363) [ 33.385184][ T1] ? get_random_u32 (include/linux/string.h:366 include/crypto/chacha.h:119 drivers/char/random.c:425 drivers/char/random.c:554) [ 33.387436][ T1] ? __get_random_u32_below (drivers/char/random.c:568) [ 33.389903][ T1] ? allocate_slab (mm/slub.c:3073) [ 33.392145][ T1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050) [ 33.394715][ T1] ? asm_sysvec_apic_timer_interrupt (arch/x86/include/asm/idtentry.h:697) [ 33.397519][ T1] ? strlen (lib/string.c:420) [ 33.399382][ T1] ? parameq (kernel/params.c:90 kernel/params.c:99) [ 33.401356][ T1] ? do_initcall_level (init/main.c:1327) [ 33.403660][ T1] ? parse_args (kernel/params.c:153) [ 33.405789][ T1] do_initcall_level (init/main.c:1342) [ 33.408096][ T1] do_initcalls (init/main.c:1356) [ 33.410025][ T1] kernel_init_freeable (init/main.c:1593) [ 33.412141][ T1] ? rest_init (init/main.c:1473) [ 33.414170][ T1] kernel_init (init/main.c:1483) [ 33.416292][ T1] ret_from_fork (arch/x86/kernel/process.c:154) [ 33.418432][ T1] ? rest_init (init/main.c:1473) [ 33.420469][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:255) [ 33.422651][ T1] [ 33.424207][ T1] ---[ end trace 0000000000000000 ]--- The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250902/202509022248.dbe9cc08-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki