CFI failure at __traceiter_sched_switch+0x9b/0xd0 include/trace/events/sched.h:222 (target: tp_stub_func+0x0/0x10; expected type: 0xee1f7a69) invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 18980 Comm: syz.7.4747 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:__traceiter_sched_switch+0x9b/0xd0 include/trace/events/sched.h:222 Code: 80 3c 30 00 74 05 e8 84 75 69 00 49 8b 7d 08 44 89 e6 48 8b 55 c8 48 8b 4d c0 44 8b 45 d4 41 ba 97 85 e0 11 45 03 57 fc 74 02 <0f> 0b 41 ff d7 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 RSP: 0018:ffffc90002cc7750 EFLAGS: 00010096 RAX: 1ffff110227ca6d6 RBX: ffff888113e536a8 RCX: ffff888126480000 RDX: ffff8881149f9440 RSI: 0000000000000001 RDI: ffffc90003753000 RBP: ffffc90002cc7790 R08: 0000000000000000 R09: fffffbfff0ee4dde R10: 00000000b720eca3 R11: 1ffffffff0ee4ddd R12: 0000000000000001 R13: ffff888113e536a8 R14: dffffc0000000000 R15: ffffffff81713a70 FS: 00007f113c0f76c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2a3547 CR3: 0000000165bf7000 CR4: 00000000003506b0 Call Trace: trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x1263/0x14e0 kernel/sched/core.c:6747 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_reschedule_ipi+0x78/0x80 arch/x86/kernel/smp.c:244 asm_sysvec_reschedule_ipi+0x1b/0x20 arch/x86/include/asm/idtentry.h:696 RIP: 0010:_copy_from_user+0x54/0xc0 lib/usercopy.c:15 Code: eb 4f 49 bc 00 f0 ff ff ff 7f 00 00 4c 89 e7 48 89 de e8 bf 7e 0c ff 4c 89 e7 48 29 df 4c 89 fe e8 41 7c 0c ff 49 29 dc 72 61 <4d> 39 fc 72 5c e8 e2 79 0c ff 0f ae e8 4c 89 f7 89 de e8 c5 eb 50 RSP: 0018:ffffc90002cc7a30 EFLAGS: 00000212 RAX: ffffffff8263a42f RBX: 0000000000000038 RCX: ffff8881149f9440 RDX: 0000000000000002 RSI: 0000200000b0c2c0 RDI: 00007fffffffefc8 RBP: ffffc90002cc7a50 R08: dffffc0000000000 R09: ffffc90002cc7ac0 R10: fffff52000598f5f R11: 1ffff92000598f58 R12: 00007fffffffefc8 R13: dffffc0000000000 R14: ffffc90002cc7ac0 R15: 0000200000b0c2c0 copy_from_user include/linux/uaccess.h:161 [inline] copy_msghdr_from_user net/socket.c:2439 [inline] recvmsg_copy_msghdr net/socket.c:2694 [inline] ___sys_recvmsg+0x12b/0x510 net/socket.c:2766 do_recvmmsg+0x359/0x7a0 net/socket.c:2864 __sys_recvmmsg net/socket.c:2943 [inline] __do_sys_recvmmsg net/socket.c:2966 [inline] __se_sys_recvmmsg net/socket.c:2959 [inline] __x64_sys_recvmmsg+0x18d/0x240 net/socket.c:2959 x64_sys_call+0x3e7/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:300 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: 0033:0x7f113b18efc9 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:00007f113c0f7038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f113b3e6090 RCX: 00007f113b18efc9 RDX: 000000000400034f RSI: 0000200000000480 RDI: 0000000000000004 RBP: 00007f113b211f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f113b3e6128 R14: 00007f113b3e6090 R15: 00007ffd0842e108 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__traceiter_sched_switch+0x9b/0xd0 include/trace/events/sched.h:222 Code: 80 3c 30 00 74 05 e8 84 75 69 00 49 8b 7d 08 44 89 e6 48 8b 55 c8 48 8b 4d c0 44 8b 45 d4 41 ba 97 85 e0 11 45 03 57 fc 74 02 <0f> 0b 41 ff d7 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 RSP: 0018:ffffc90002cc7750 EFLAGS: 00010096 RAX: 1ffff110227ca6d6 RBX: ffff888113e536a8 RCX: ffff888126480000 RDX: ffff8881149f9440 RSI: 0000000000000001 RDI: ffffc90003753000 RBP: ffffc90002cc7790 R08: 0000000000000000 R09: fffffbfff0ee4dde R10: 00000000b720eca3 R11: 1ffffffff0ee4ddd R12: 0000000000000001 R13: ffff888113e536a8 R14: dffffc0000000000 R15: ffffffff81713a70 FS: 00007f113c0f76c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2a3547 CR3: 0000000165bf7000 CR4: 00000000003506b0 ---------------- Code disassembly (best guess): 0: eb 4f jmp 0x51 2: 49 bc 00 f0 ff ff ff movabs $0x7ffffffff000,%r12 9: 7f 00 00 c: 4c 89 e7 mov %r12,%rdi f: 48 89 de mov %rbx,%rsi 12: e8 bf 7e 0c ff call 0xff0c7ed6 17: 4c 89 e7 mov %r12,%rdi 1a: 48 29 df sub %rbx,%rdi 1d: 4c 89 fe mov %r15,%rsi 20: e8 41 7c 0c ff call 0xff0c7c66 25: 49 29 dc sub %rbx,%r12 28: 72 61 jb 0x8b * 2a: 4d 39 fc cmp %r15,%r12 <-- trapping instruction 2d: 72 5c jb 0x8b 2f: e8 e2 79 0c ff call 0xff0c7a16 34: 0f ae e8 lfence 37: 4c 89 f7 mov %r14,%rdi 3a: 89 de mov %ebx,%esi 3c: e8 .byte 0xe8 3d: c5 .byte 0xc5 3e: eb 50 jmp 0x90