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: 1 PID: 11061 Comm: syz.0.3129 Not tainted 6.1.145-syzkaller-00015-g87b9d836c3d8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__traceiter_kfree+0x34/0x50 include/trace/events/kmem.h:94
Code: 8b 3d d0 5b 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:ffffc900001b0b98 EFLAGS: 00010213
RAX: ffffffff81712380 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81a37515 RDI: ffffc90000dcd000
RBP: ffffc900001b0bb0 R08: ffff8881f5c00000 R09: 000000000006fd14
R10: 000000001ebd94fb R11: 0000000000000001 R12: ffffffff817fdf20
R13: ffff88810cd71418 R14: ffffffff81a37515 R15: ffff888133973228
FS: 00007f2b074436c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d463fff CR3: 000000012ce36000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_kfree include/trace/events/kmem.h:94 [inline]
kfree+0xc9/0xf0 mm/slab_common.c:977
kvfree+0x35/0x40 mm/util.c:639
__bpf_prog_put_rcu+0x3b/0xc0 kernel/bpf/syscall.c:2038
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:642
__do_softirq kernel/softirq.c:680 [inline]
invoke_softirq kernel/softirq.c:497 [inline]
__irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
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 f8 49 19 00 48 81 e3 00 02 00 00 75 07 e8 2a 45 19 00 eb 06 e8 23 45 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:ffffc90000d1f460 EFLAGS: 00000293
RAX: ffffffff8156c20d RBX: 0000000000000001 RCX: ffff888114269440
RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000
RBP: ffffc90000d1f670 R08: 0000000000000004 R09: 0000000000000003
R10: fffff520001a3e7c R11: 1ffff920001a3e7c R12: ffffc90000d1f6bf
R13: dffffc0000000000 R14: 1ffff920001a3e9c 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 d0 5b 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:ffffc90000d1fc00 EFLAGS: 00010213
RAX: ffffffff81712380 RBX: ffff888133973980 RCX: 0000000000000000
RDX: ffff888133973980 RSI: ffffffff8180fce5 RDI: ffffc90000dcd000
RBP: ffffc90000d1fc18 R08: dffffc0000000000 R09: ffffed1022d95c01
R10: 000000001ebd94fb R11: ffffffff8180fcd0 R12: 1ffff1102672e733
R13: dffffc0000000000 R14: ffffffff8180fce5 R15: ffff888133973228
trace_kfree include/trace/events/kmem.h:94 [inline]
kfree+0xc9/0xf0 mm/slab_common.c:977
bpf_raw_tp_link_dealloc+0x15/0x20 kernel/bpf/syscall.c:3179
bpf_link_free+0x321/0x390 kernel/bpf/syscall.c:2743
bpf_link_put kernel/bpf/syscall.c:2765 [inline]
bpf_link_release+0x15f/0x170 kernel/bpf/syscall.c:2774
__fput+0x1fc/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1db/0x240 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f2b0658ebe9
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:00007f2b07443038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f2b067b5fa0 RCX: 00007f2b0658ebe9
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007f2b07443090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f2b067b6038 R14: 00007f2b067b5fa0 R15: 00007fff503b96d8
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__traceiter_kfree+0x34/0x50 include/trace/events/kmem.h:94
Code: 8b 3d d0 5b 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:ffffc900001b0b98 EFLAGS: 00010213
RAX: ffffffff81712380 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81a37515 RDI: ffffc90000dcd000
RBP: ffffc900001b0bb0 R08: ffff8881f5c00000 R09: 000000000006fd14
R10: 000000001ebd94fb R11: 0000000000000001 R12: ffffffff817fdf20
R13: ffff88810cd71418 R14: ffffffff81a37515 R15: ffff888133973228
FS: 00007f2b074436c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d463fff CR3: 000000012ce36000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
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 f8 49 19 00 call 0x194a06
e: 48 81 e3 00 02 00 00 and $0x200,%rbx
15: 75 07 jne 0x1e
17: e8 2a 45 19 00 call 0x194546
1c: eb 06 jmp 0x24
1e: e8 23 45 19 00 call 0x194546
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