CFI failure at __traceiter_bpf_trace_printk+0x75/0xc0 kernel/trace/bpf_trace.h:11 (target: tp_stub_func+0x0/0x10; expected type: 0xf18bd0c0) invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 13263 Comm: syz.7.4598 Not tainted 6.1.134-syzkaller-00002-g48ab183a3ee2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:__traceiter_bpf_trace_printk+0x75/0xc0 kernel/trace/bpf_trace.h:11 Code: 49 8d 7e 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 4e d5 38 00 49 8b 7f 08 48 89 de 41 ba 40 2f 74 0e 45 03 55 fc 74 02 <0f> 0b 41 ff d5 49 83 c6 18 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 RSP: 0018:ffffc90000b36768 EFLAGS: 00010082 RAX: 1ffff11022c6a6e6 RBX: ffff8881f7133400 RCX: 0000000000080000 RDX: ffffc90010a82000 RSI: ffff8881f7133400 RDI: ffffffff870006a0 RBP: ffffc90000b36790 R08: dffffc0000000000 R09: ffffed102002e817 R10: 00000000b3b4964c R11: 1ffff1102002e816 R12: dffffc0000000000 R13: ffffffff817102c0 R14: ffff888116353728 R15: ffff888116353728 FS: 00007f8ce82af6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d11bff8 CR3: 000000011ba7a000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: trace_bpf_trace_printk kernel/trace/bpf_trace.h:11 [inline] ____bpf_trace_printk kernel/trace/bpf_trace.c:391 [inline] bpf_trace_printk+0x208/0x250 kernel/trace/bpf_trace.c:374 bpf_prog_0605f9f479290f07+0x2f/0x33 bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline] __bpf_prog_run include/linux/filter.h:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2282 [inline] bpf_trace_run1+0xf0/0x240 kernel/trace/bpf_trace.c:2320 __bpf_trace_rcu_utilization+0x9/0x10 include/trace/events/rcu.h:27 trace_rcu_utilization include/trace/events/rcu.h:27 [inline] rcu_note_context_switch+0x105e/0x1130 kernel/rcu/tree_plugin.h:318 __schedule+0x185/0x14e0 kernel/sched/core.c:6648 preempt_schedule_irq+0x9b/0x110 kernel/sched/core.c:7062 raw_irqentry_exit_cond_resched+0x29/0x30 kernel/entry/common.c:396 irqentry_exit+0x37/0x40 kernel/entry/common.c:439 sysvec_apic_timer_interrupt+0x64/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:__sanitizer_cov_trace_switch+0x54/0xe0 kernel/kcov.c:348 Code: 0f 84 ab 00 00 00 55 48 89 e5 41 57 41 56 41 54 53 48 8b 0c cd f0 34 8a 85 48 8b 55 08 65 4c 8b 05 b1 81 92 7e 45 31 c9 eb 08 <49> ff c1 4c 39 c8 74 77 4e 8b 54 ce 10 65 44 8b 1d 9f 81 92 7e 41 RSP: 0018:ffffc90000b36dc8 EFLAGS: 00000297 RAX: 0000000000000012 RBX: 0000000000000002 RCX: 0000000000000001 RDX: ffffffff84e0f94f RSI: ffffffff876d5920 RDI: 0000000000000000 RBP: ffffc90000b36de8 R08: ffff88810ff89440 R09: 0000000000000010 R10: 0000000000000011 R11: 0000000000000002 R12: ffff0a01ffffff00 R13: ffff88813452866d R14: 0000000000000000 R15: ffffffff858c8e82 vsnprintf+0x10f/0x1960 lib/vsprintf.c:2761 vscnprintf+0x41/0x80 lib/vsprintf.c:2911 bpf_verifier_vlog+0x41/0x390 kernel/bpf/log.c:23 verbose+0x1dc/0x2a0 kernel/bpf/verifier.c:303 do_check+0x4143/0xf060 kernel/bpf/verifier.c:12495 do_check_common+0x11ae/0x1950 kernel/bpf/verifier.c:14930 do_check_main kernel/bpf/verifier.c:14993 [inline] bpf_check+0x3de0/0x10d50 kernel/bpf/verifier.c:15570 bpf_prog_load+0x1071/0x15a0 kernel/bpf/syscall.c:2618 __sys_bpf+0x504/0x780 kernel/bpf/syscall.c:4999 __do_sys_bpf kernel/bpf/syscall.c:5103 [inline] __se_sys_bpf kernel/bpf/syscall.c:5101 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5101 x64_sys_call+0x488/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f8ce738e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8ce82af038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f8ce75b6080 RCX: 00007f8ce738e969 RDX: 0000000000000080 RSI: 0000200000003480 RDI: 0000000000000005 RBP: 00007f8ce7410ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8ce75b6080 R15: 00007ffeec6a3a18 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__traceiter_bpf_trace_printk+0x75/0xc0 kernel/trace/bpf_trace.h:11 Code: 49 8d 7e 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 4e d5 38 00 49 8b 7f 08 48 89 de 41 ba 40 2f 74 0e 45 03 55 fc 74 02 <0f> 0b 41 ff d5 49 83 c6 18 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 RSP: 0018:ffffc90000b36768 EFLAGS: 00010082 RAX: 1ffff11022c6a6e6 RBX: ffff8881f7133400 RCX: 0000000000080000 RDX: ffffc90010a82000 RSI: ffff8881f7133400 RDI: ffffffff870006a0 RBP: ffffc90000b36790 R08: dffffc0000000000 R09: ffffed102002e817 R10: 00000000b3b4964c R11: 1ffff1102002e816 R12: dffffc0000000000 R13: ffffffff817102c0 R14: ffff888116353728 R15: ffff888116353728 FS: 00007f8ce82af6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d11bff8 CR3: 000000011ba7a000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 0f 84 ab 00 00 00 je 0xb1 6: 55 push %rbp 7: 48 89 e5 mov %rsp,%rbp a: 41 57 push %r15 c: 41 56 push %r14 e: 41 54 push %r12 10: 53 push %rbx 11: 48 8b 0c cd f0 34 8a mov -0x7a75cb10(,%rcx,8),%rcx 18: 85 19: 48 8b 55 08 mov 0x8(%rbp),%rdx 1d: 65 4c 8b 05 b1 81 92 mov %gs:0x7e9281b1(%rip),%r8 # 0x7e9281d6 24: 7e 25: 45 31 c9 xor %r9d,%r9d 28: eb 08 jmp 0x32 * 2a: 49 ff c1 inc %r9 <-- trapping instruction 2d: 4c 39 c8 cmp %r9,%rax 30: 74 77 je 0xa9 32: 4e 8b 54 ce 10 mov 0x10(%rsi,%r9,8),%r10 37: 65 44 8b 1d 9f 81 92 mov %gs:0x7e92819f(%rip),%r11d # 0x7e9281de 3e: 7e 3f: 41 rex.B