------------[ cut here ]------------
WARNING: CPU: 0 PID: 4571 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 4571 Comm: syz.1.99 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 fd 94 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 80 91 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: ffffffff81a08f90 RBX: 0000000000000008 RCX: ffff8880214a9dc0
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880214a9dc7 R09: 1ffff110042953b8
R10: dffffc0000000000 R11: ffffed10042953b9 R12: ffff8880214ab548
R13: 00007ffffffff000 R14: ffffc90000007ea8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562b74dc7950 CR3: 000000002b733000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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_bc47904a6221c669+0x5b/0x9f8
 bpf_dispatcher_nop_func include/linux/bpf.h:888 [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:call_rcu+0x6d6/0x950 kernel/rcu/tree.c:3092
Code: f7 84 24 a0 00 00 00 00 02 00 00 43 c6 44 25 04 f8 75 4f f7 44 24 58 00 02 00 00 74 01 fb 48 c7 84 24 80 00 00 00 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 08 00 00 00 00 65 48 8b 04
RSP: 0018:ffffc900030c78e0 EFLAGS: 00000206
RAX: 463474dbd9ec5300 RBX: ffff8880251cef00 RCX: 463474dbd9ec5300
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f980
RBP: ffffc900030c7a08 R08: ffffffff8d89e36f R09: 1ffffffff1b13c6d
R10: dffffc0000000000 R11: fffffbfff1b13c6e R12: dffffc0000000000
R13: 1ffff92000618f2c R14: 1ffff11017207654 R15: 0000000000000030
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0x626/0x20c0 kernel/exit.c:883
 do_group_exit+0x12e/0x300 kernel/exit.c:997
 get_signal+0x6ca/0x12c0 kernel/signal.c:2900
 arch_do_signal_or_restart+0xe7/0x12c0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f50d5b6a799
Code: Unable to access opcode bytes at RIP 0x7f50d5b6a76f.
RSP: 002b:00007f50d3dc40e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f50d5de3fa8 RCX: 00007f50d5b6a799
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f50d5de3fac
RBP: 00007f50d5de3fa0 R08: 001e3547f008d3ca R09: 0000000000000000
R10: 000000000000fe33 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f50d5de4038 R14: 00007fff725d1d50 R15: 00007fff725d1e38
 </TASK>
----------------
Code disassembly (best guess):
   0:	f7 84 24 a0 00 00 00 	testl  $0x200,0xa0(%rsp)
   7:	00 02 00 00
   b:	43 c6 44 25 04 f8    	movb   $0xf8,0x4(%r13,%r12,1)
  11:	75 4f                	jne    0x62
  13:	f7 44 24 58 00 02 00 	testl  $0x200,0x58(%rsp)
  1a:	00
  1b:	74 01                	je     0x1e
  1d:	fb                   	sti
  1e:	48 c7 84 24 80 00 00 	movq   $0x45e0360e,0x80(%rsp)
  25:	00 0e 36 e0 45
* 2a:	4b c7 44 25 00 00 00 	movq   $0x0,0x0(%r13,%r12,1) <-- trapping instruction
  31:	00 00
  33:	43 c7 44 25 08 00 00 	movl   $0x0,0x8(%r13,%r12,1)
  3a:	00 00
  3c:	65                   	gs
  3d:	48                   	rex.W
  3e:	8b                   	.byte 0x8b
  3f:	04                   	.byte 0x4