CFI failure at __traceiter_kfree+0x34/0x50 include/trace/events/kmem.h:94 (target: tp_stub_func+0x0/0x10; expected type: 0x8682d211)
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 2395 Comm: syz.0.681 Not tainted 6.1.134-syzkaller-00039-g3c6d0251e1fb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__traceiter_kfree+0x34/0x50 include/trace/events/kmem.h:94
Code: 8b 3d 38 5c ca 05 4d 85 ff 74 2e 48 89 d3 49 89 f6 49 8b 07 49 8b 7f 08 4c 89 f6 48 89 da 41 ba ef 2d 7d 79 44 03 50 fc 74 02 <0f> 0b ff d0 49 83 7f 18 00 4d 8d 7f 18 75 d8 31 c0 5b 41 5e 41 5f
RSP: 0018:ffffc90000007ba8 EFLAGS: 00010213
RAX: ffffffff817104f0 RBX: ffff88811889e400 RCX: ffff88810d67bcc0
RDX: ffff88811889e400 RSI: ffffffff8197452d RDI: ffffffff870584b0
RBP: ffffc90000007bc0 R08: 1ffff11021acf830 R09: 1ffff11021acf830
R10: 000000001ebd94fb R11: 1ffff1103ee071a2 R12: dffffc0000000000
R13: ffff88811889e518 R14: ffffffff8197452d R15: ffff88810fd07610
FS: 00007fb58d9ff6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000031 CR3: 0000000136144000 CR4: 00000000003506b0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
trace_kfree include/trace/events/kmem.h:94 [inline]
kfree+0xc9/0xf0 mm/slab_common.c:977
free_ctx+0xad/0xc0 kernel/events/core.c:1208
rcu_do_batch+0x515/0xb90 kernel/rcu/tree.c:2297
rcu_core+0x5a5/0xe70 kernel/rcu/tree.c:2557
rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2574
handle_softirqs+0x1d7/0x600 kernel/softirq.c:624
__do_softirq kernel/softirq.c:662 [inline]
invoke_softirq kernel/softirq.c:479 [inline]
__irq_exit_rcu+0x52/0xf0 kernel/softirq.c:711
irq_exit_rcu+0x9/0x10 kernel/softirq.c:723
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:console_emit_next_record+0x9e3/0xbc0 kernel/printk/printk.c:2797
Code: de 48 81 e6 00 02 00 00 31 ff e8 d8 48 19 00 48 81 e3 00 02 00 00 75 07 e8 0a 44 19 00 eb 06 e8 03 44 19 00 fb 0f b6 5c 24 07 <48> c7 84 24 80 00 00 00 0e 36 e0 45 4b c7 04 2e 00 00 00 00 4b c7
RSP: 0018:ffffc9000104e800 EFLAGS: 00000283
RAX: ffffffff8156a49d RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc90001a0b000 RSI: 0000000000007bb5 RDI: 0000000000007bb6
RBP: ffffc9000104ea10 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000209cf0 R11: 1ffff92000209cf0 R12: ffffc9000104ea5f
R13: dffffc0000000000 R14: 1ffff92000209d10 R15: 000000000000007d
console_flush_all kernel/printk/printk.c:-1 [inline]
console_unlock+0x23d/0x550 kernel/printk/printk.c:2917
vprintk_emit+0x14d/0x410 kernel/printk/printk.c:2308
vprintk_default+0x26/0x30 kernel/printk/printk.c:2323
vprintk+0x7a/0x80 kernel/printk/printk_safe.c:45
_printk+0xcc/0x118 kernel/printk/printk.c:2333
report_cfi_failure+0x6b/0x80 kernel/cfi.c:14
handle_cfi_failure+0x238/0x290 arch/x86/kernel/cfi.c:-1
handle_bug+0x4b/0x80 arch/x86/kernel/traps.c:325
exc_invalid_op+0x1b/0x50 arch/x86/kernel/traps.c:345
asm_exc_invalid_op+0x1b/0x20 arch/x86/include/asm/idtentry.h:606
RIP: 0010:__traceiter_kfree+0x34/0x50 include/trace/events/kmem.h:94
Code: 8b 3d 38 5c ca 05 4d 85 ff 74 2e 48 89 d3 49 89 f6 49 8b 07 49 8b 7f 08 4c 89 f6 48 89 da 41 ba ef 2d 7d 79 44 03 50 fc 74 02 <0f> 0b ff d0 49 83 7f 18 00 4d 8d 7f 18 75 d8 31 c0 5b 41 5e 41 5f
RSP: 0018:ffffc9000104efa0 EFLAGS: 00010213
RAX: ffffffff817104f0 RBX: ffff888109cd7e38 RCX: 0000000000080000
RDX: ffff888109cd7e38 RSI: ffffffff81a34d65 RDI: ffffffff870584b0
RBP: ffffc9000104efb8 R08: dffffc0000000000 R09: fffffbfff0f33aa5
R10: 000000001ebd94fb R11: 1ffffffff0f33aa4 R12: ffff888113738920
R13: dffffc0000000000 R14: ffffffff81a34d65 R15: ffff88810fd07610
trace_kfree include/trace/events/kmem.h:94 [inline]
kfree+0xc9/0xf0 mm/slab_common.c:977
kvfree+0x35/0x40 mm/util.c:639
__vunmap+0xaa6/0xb70 mm/vmalloc.c:2735
__vfree mm/vmalloc.c:2778 [inline]
vfree+0x61/0x90 mm/vmalloc.c:2809
bpf_prog_calc_tag+0x534/0x620 kernel/bpf/core.c:343
resolve_pseudo_ldimm64+0xd4/0x11d0 kernel/bpf/verifier.c:13021
bpf_check+0x3772/0x10d50 kernel/bpf/verifier.c:15555
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: 0033:0x7fb58db8e969
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:00007fb58d9ff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fb58ddb6080 RCX: 00007fb58db8e969
RDX: 0000000000000094 RSI: 00002000000000c0 RDI: 0000000000000005
RBP: 00007fb58dc10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb58ddb6080 R15: 00007ffce15dd168
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__traceiter_kfree+0x34/0x50 include/trace/events/kmem.h:94
Code: 8b 3d 38 5c ca 05 4d 85 ff 74 2e 48 89 d3 49 89 f6 49 8b 07 49 8b 7f 08 4c 89 f6 48 89 da 41 ba ef 2d 7d 79 44 03 50 fc 74 02 <0f> 0b ff d0 49 83 7f 18 00 4d 8d 7f 18 75 d8 31 c0 5b 41 5e 41 5f
RSP: 0018:ffffc90000007ba8 EFLAGS: 00010213
RAX: ffffffff817104f0 RBX: ffff88811889e400 RCX: ffff88810d67bcc0
RDX: ffff88811889e400 RSI: ffffffff8197452d RDI: ffffffff870584b0
RBP: ffffc90000007bc0 R08: 1ffff11021acf830 R09: 1ffff11021acf830
R10: 000000001ebd94fb R11: 1ffff1103ee071a2 R12: dffffc0000000000
R13: ffff88811889e518 R14: ffffffff8197452d R15: ffff88810fd07610
FS: 00007fb58d9ff6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000031 CR3: 0000000136144000 CR4: 00000000003506b0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 48 81 e6 00 02 00 00 and $0x200,%rsi
7: 31 ff xor %edi,%edi
9: e8 d8 48 19 00 call 0x1948e6
e: 48 81 e3 00 02 00 00 and $0x200,%rbx
15: 75 07 jne 0x1e
17: e8 0a 44 19 00 call 0x194426
1c: eb 06 jmp 0x24
1e: e8 03 44 19 00 call 0x194426
23: fb sti
24: 0f b6 5c 24 07 movzbl 0x7(%rsp),%ebx
* 29: 48 c7 84 24 80 00 00 movq $0x45e0360e,0x80(%rsp) <-- trapping instruction
30: 00 0e 36 e0 45
35: 4b c7 04 2e 00 00 00 movq $0x0,(%r14,%r13,1)
3c: 00
3d: 4b rex.WXB
3e: c7 .byte 0xc7