Disabled fast string operations ------------[ cut here ]------------ alternatives_patched WARNING: arch/x86/kernel/cpu/cpuid-deps.c:127 at do_clear_cpu_cap+0x416/0x450 arch/x86/kernel/cpu/cpuid-deps.c:127, CPU#1: swapper/1/0 Modules linked in: CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G S syzkaller #0 PREEMPT_{RT,(full)} Tainted: [S]=CPU_OUT_OF_SPEC Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026 RIP: 0010:do_clear_cpu_cap+0x416/0x450 arch/x86/kernel/cpu/cpuid-deps.c:127 Code: 00 00 00 75 2d 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 16 bb 57 00 90 0f 0b 90 eb 94 e8 0b bb 57 00 90 <0f> 0b 90 e9 06 fd ff ff e8 9d 55 05 0a 48 c7 c1 d0 8b d5 90 80 e1 RSP: 0000:ffffc900001c7c20 EFLAGS: 00010093 RAX: ffffffff81701f55 RBX: dffffc0000000001 RCX: ffff88801e2b9f40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900001c7d58 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1e7671a R12: 0000000000000070 R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000070 FS: 0000000000000000(0000) GS:ffff88812480f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000000f1b0000 CR4: 00000000003506b0 Call Trace: early_init_intel+0xbb9/0xf50 arch/x86/kernel/cpu/intel.c:344 init_intel+0x28/0x780 arch/x86/kernel/cpu/intel.c:563 identify_cpu+0xb84/0x3560 arch/x86/kernel/cpu/common.c:2060 identify_secondary_cpu+0xb2/0x170 arch/x86/kernel/cpu/common.c:2185 ap_starting+0x9c/0x150 arch/x86/kernel/smpboot.c:190 start_secondary+0x66/0x110 arch/x86/kernel/smpboot.c:280 common_startup_64+0x13e/0x157