------------[ cut here ]------------
WARNING: CPU: 1 PID: 5617 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 5617 Comm: syz.1.287 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 3d f7 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 c0 f3 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:ffffc90000dd09d0 EFLAGS: 00010046
RAX: ffffffff819ed760 RBX: 0000000000000008 RCX: ffff88802bdc9dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed10057b93b9
R10: ffffed10057b93b9 R11: 1ffff110057b93b8 R12: ffff88802bdcb548
R13: 00007ffffffff000 R14: ffffc90000dd0a48 R15: 0000000020000000
FS:  00007fcdf69a16c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcdf699ffb8 CR3: 0000000076aeb000 CR4: 00000000003506e0
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_bcff4640d6a7c5a9+0x75/0x82c
 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_trace_run kernel/trace/bpf_trace.c:1878 [inline]
 bpf_trace_run3+0x17e/0x320 kernel/trace/bpf_trace.c:1916
 trace_workqueue_queue_work include/trace/events/workqueue.h:23 [inline]
 __queue_work+0xcee/0xd50 kernel/workqueue.c:1512
 call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1491 [inline]
 __run_timers+0x550/0x7c0 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:162 [inline]
RIP: 0010:unwind_next_frame+0x195/0x1d90 arch/x86/kernel/unwind_orc.c:448
Code: 00 00 00 81 0f 92 c0 48 81 fd c1 7d e0 89 0f 93 c1 08 c1 0f 85 c8 00 00 00 48 c7 c0 00 00 00 81 49 89 ee 49 29 c6 49 c1 ee 08 <8b> 15 45 b5 87 0a 8d 42 ff 44 39 f0 0f 86 f5 14 00 00 44 89 f0 4c
RSP: 0018:ffffc9000309f708 EFLAGS: 00000203
RAX: ffffffff81000000 RBX: ffffc9000309f828 RCX: ffffffff960c2f00
RDX: ffffffff8a088380 RSI: dffffc0000000000 RDI: ffffffff8134790c
RBP: ffffffff812c5199 R08: dffffc0000000000 R09: ffffc9000309f878
R10: fffff52000613f11 R11: 1ffff92000613f0f R12: ffffffff812c519a
R13: dffffc0000000000 R14: 0000000000002c51 R15: ffffc9000309f870
 __unwind_start+0x5bb/0x740 arch/x86/kernel/unwind_orc.c:704
 unwind_start arch/x86/include/asm/unwind.h:60 [inline]
 arch_stack_walk+0xda/0x140 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_kmalloc+0xb5/0xf0 mm/kasan/common.c:522
 kmalloc_reserve net/core/skbuff.c:356 [inline]
 __alloc_skb+0x22c/0x750 net/core/skbuff.c:427
 alloc_skb include/linux/skbuff.h:1162 [inline]
 netlink_alloc_large_skb net/netlink/af_netlink.c:1182 [inline]
 netlink_sendmsg+0x645/0xbc0 net/netlink/af_netlink.c:1893
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 __sys_sendto+0x423/0x580 net/socket.c:2063
 __do_sys_sendto net/socket.c:2075 [inline]
 __se_sys_sendto net/socket.c:2071 [inline]
 __x64_sys_sendto+0xda/0xf0 net/socket.c:2071
 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: 0033:0x7fcdf873ba3c
Code: 2a 5f 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5f 02 00 48 8b
RSP: 002b:00007fcdf699fec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fcdf699ffc0 RCX: 00007fcdf873ba3c
RDX: 0000000000000020 RSI: 00007fcdf69a0010 RDI: 0000000000000006
RBP: 0000000000000000 R08: 00007fcdf699ff14 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000006
R13: 00007fcdf699ff68 R14: 00007fcdf69a0010 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	00 81 0f 92 c0 48    	add    %al,0x48c0920f(%rcx)
   8:	81 fd c1 7d e0 89    	cmp    $0x89e07dc1,%ebp
   e:	0f 93 c1             	setae  %cl
  11:	08 c1                	or     %al,%cl
  13:	0f 85 c8 00 00 00    	jne    0xe1
  19:	48 c7 c0 00 00 00 81 	mov    $0xffffffff81000000,%rax
  20:	49 89 ee             	mov    %rbp,%r14
  23:	49 29 c6             	sub    %rax,%r14
  26:	49 c1 ee 08          	shr    $0x8,%r14
* 2a:	8b 15 45 b5 87 0a    	mov    0xa87b545(%rip),%edx        # 0xa87b575 <-- trapping instruction
  30:	8d 42 ff             	lea    -0x1(%rdx),%eax
  33:	44 39 f0             	cmp    %r14d,%eax
  36:	0f 86 f5 14 00 00    	jbe    0x1531
  3c:	44 89 f0             	mov    %r14d,%eax
  3f:	4c                   	rex.WR