------------[ cut here ]------------
WARNING: CPU: 0 PID: 4186 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 4186 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 4d 97 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 d0 93 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000007e30 EFLAGS: 00010006
RAX: ffffffff81a068e0 RBX: 0000000000000000 RCX: ffff88807e5f8000
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88807e5f8007 R09: 1ffff1100fcbf000
R10: dffffc0000000000 R11: ffffed100fcbf001 R12: ffff88807e5f9788
R13: 00007ffffffff000 R14: ffffc90000007ea8 R15: 0000000000000000
FS:  000055556079d500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556079d4e8 CR3: 0000000066031000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
 bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
 bpf_prog_03eebc38237b138e+0x34/0x744
 bpf_dispatcher_nop_func include/linux/bpf.h:889 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_prog_test_run_raw_tp+0x1cd/0x3f0 net/bpf/test_run.c:335
 flush_smp_call_function_queue+0x2a9/0x760 kernel/smp.c:628
 __sysvec_call_function_single+0x98/0x240 arch/x86/kernel/smp.c:248
 instr_sysvec_call_function_single arch/x86/kernel/smp.c:243 [inline]
 sysvec_call_function_single+0x98/0xc0 arch/x86/kernel/smp.c:243
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:684
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xbc/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 1f c1 88 f7 65 8b 05 90 e8 38 76 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc900022c7620 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a06 RCX: 6abc2b0dd8f6bf00
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: 0000000000000001
RBP: ffffc900022c76b0 R08: ffffffff96528253 R09: 1ffffffff2ca504a
R10: dffffc0000000000 R11: fffffbfff2ca504b R12: dffffc0000000000
R13: 1ffff92000458ee8 R14: ffffffff96528250 R15: 1ffff92000458ec4
 debug_rcu_head_queue kernel/rcu/rcu.h:177 [inline]
 __call_rcu kernel/rcu/tree.c:2995 [inline]
 call_rcu+0xbb/0x900 kernel/rcu/tree.c:3091
 __dentry_kill+0x4db/0x630 fs/dcache.c:600
 dentry_kill+0xb8/0x290 fs/dcache.c:-1
 dput+0xd8/0x1a0 fs/dcache.c:893
 proc_invalidate_siblings_dcache+0x39e/0x650 fs/proc/inode.c:151
 release_task+0x147a/0x15f0 kernel/exit.c:275
 wait_task_zombie kernel/exit.c:1189 [inline]
 wait_consider_task+0x1932/0x2e30 kernel/exit.c:1416
 do_wait_thread kernel/exit.c:1479 [inline]
 do_wait+0x2f5/0xaa0 kernel/exit.c:1596
 kernel_wait4+0x22b/0x2b0 kernel/exit.c:1759
 __do_sys_wait4 kernel/exit.c:1787 [inline]
 __se_sys_wait4 kernel/exit.c:1783 [inline]
 __x64_sys_wait4+0x163/0x230 kernel/exit.c:1783
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa4b1d3490e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fff729d1f98 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 000055556079d500 RCX: 00007fa4b1d3490e
RDX: 0000000040000001 RSI: 00007fff729d203c RDI: ffffffffffffffff
RBP: 00007fff729d203c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000001388
R13: 00000000000927c0 R14: 000000000001f203 R15: 00007fff729d2090
 </TASK>
----------------
Code disassembly (best guess):
   0:	c7 44 24 20 00 00 00 	movl   $0x0,0x20(%rsp)
   7:	00
   8:	9c                   	pushf
   9:	8f 44 24 20          	pop    0x20(%rsp)
   d:	f7 44 24 20 00 02 00 	testl  $0x200,0x20(%rsp)
  14:	00
  15:	41 c6 04 07 f8       	movb   $0xf8,(%r15,%rax,1)
  1a:	75 4b                	jne    0x67
  1c:	f7 c3 00 02 00 00    	test   $0x200,%ebx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 1f c1 88 f7       	call   0xf788c14e <-- trapping instruction
  2f:	65 8b 05 90 e8 38 76 	mov    %gs:0x7638e890(%rip),%eax        # 0x7638e8c6
  36:	85 c0                	test   %eax,%eax
  38:	74 3c                	je     0x76
  3a:	48                   	rex.W
  3b:	c7                   	.byte 0xc7
  3c:	04 24                	add    $0x24,%al
  3e:	0e                   	(bad)
  3f:	36                   	ss