Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 23 Comm: ksoftirqd/1 Not tainted 6.17.0-rc1-syzkaller-ge4414b01c1cd #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:___pcpu_freelist_pop kernel/bpf/percpu_freelist.c:114 [inline]
RIP: 0010:__pcpu_freelist_pop+0x6b7/0x8c0 kernel/bpf/percpu_freelist.c:125
Code: 10 48 3b 8c 24 80 00 00 00 0f 85 b4 01 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 89 f8 48 c1 e8 03 <80> 3c 18 00 48 89 7c 24 20 74 0a e8 29 3f 41 00 48 8b 7c 24 20 48
RSP: 0018:ffffc900001d74c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffe8ffffd608b0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc900001d7590 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200003aea4 R12: 1ffffd1ffffac115
R13: ffffe8ffffd608a8 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888125d1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 00000000781e2000 CR4: 00000000003526f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 pcpu_freelist_pop+0xca/0x170 kernel/bpf/percpu_freelist.c:134
 __bpf_get_stackid+0x574/0xcf0 kernel/bpf/stackmap.c:259
 ____bpf_get_stackid_raw_tp kernel/trace/bpf_trace.c:1810 [inline]
 bpf_get_stackid_raw_tp+0x196/0x210 kernel/trace/bpf_trace.c:1799
 bpf_prog_b724608cae728045+0x27/0x2f
 bpf_dispatcher_nop_func include/linux/bpf.h:1332 [inline]
 __bpf_prog_run include/linux/filter.h:718 [inline]
 bpf_prog_run include/linux/filter.h:725 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2257 [inline]
 bpf_trace_run2+0x284/0x4b0 kernel/trace/bpf_trace.c:2298
 __do_trace_kfree include/trace/events/kmem.h:94 [inline]
 trace_kfree include/trace/events/kmem.h:94 [inline]
 kfree+0x3a0/0x440 mm/slub.c:4866
 kernfs_free_rcu+0x3f/0x100 fs/kernfs/dir.c:548
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xca8/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968
 smpboot_thread_fn+0x53f/0xa60 kernel/smpboot.c:160
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:___pcpu_freelist_pop kernel/bpf/percpu_freelist.c:114 [inline]
RIP: 0010:__pcpu_freelist_pop+0x6b7/0x8c0 kernel/bpf/percpu_freelist.c:125
Code: 10 48 3b 8c 24 80 00 00 00 0f 85 b4 01 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 89 f8 48 c1 e8 03 <80> 3c 18 00 48 89 7c 24 20 74 0a e8 29 3f 41 00 48 8b 7c 24 20 48
RSP: 0018:ffffc900001d74c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffe8ffffd608b0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc900001d7590 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200003aea4 R12: 1ffffd1ffffac115
R13: ffffe8ffffd608a8 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888125d1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 00000000781e2000 CR4: 00000000003526f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	10 48 3b             	adc    %cl,0x3b(%rax)
   3:	8c 24 80             	mov    %fs,(%rax,%rax,4)
   6:	00 00                	add    %al,(%rax)
   8:	00 0f                	add    %cl,(%rdi)
   a:	85 b4 01 00 00 48 8d 	test   %esi,-0x72b80000(%rcx,%rax,1)
  11:	65 d8 5b 41          	fcomps %gs:0x41(%rbx)
  15:	5c                   	pop    %rsp
  16:	41 5d                	pop    %r13
  18:	41 5e                	pop    %r14
  1a:	41 5f                	pop    %r15
  1c:	5d                   	pop    %rbp
  1d:	c3                   	ret
  1e:	cc                   	int3
  1f:	cc                   	int3
  20:	cc                   	int3
  21:	cc                   	int3
  22:	cc                   	int3
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1) <-- trapping instruction
  2e:	48 89 7c 24 20       	mov    %rdi,0x20(%rsp)
  33:	74 0a                	je     0x3f
  35:	e8 29 3f 41 00       	call   0x413f63
  3a:	48 8b 7c 24 20       	mov    0x20(%rsp),%rdi
  3f:	48                   	rex.W