------------[ cut here ]------------
WARNING: CPU: 1 PID: 12889 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 12889 Comm: kworker/1:18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: rcu_gp process_srcu
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:ffffc90000dcfce8 EFLAGS: 00010246
RAX: ffffffff81a068e0 RBX: 0000000000000000 RCX: ffff8880517c1dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc90000dd0117 R09: ffffc90000dd00e4
R10: dffffc0000000000 R11: fffff520001ba023 R12: ffff8880517c3548
R13: ffffc90000dd7030 R14: ffffc90000dcfd48 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32a16ff8 CR3: 000000007114a000 CR4: 00000000003506e0
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_user kernel/trace/bpf_trace.c:166 [inline]
 bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
 bpf_prog_f2594087b0f175cc+0x32/0xde0
 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_run_pin_on_cpu include/linux/filter.h:652 [inline]
 bpf_flow_dissect+0x12b/0x3e0 net/core/flow_dissector.c:896
 __skb_flow_dissect+0x7cc/0x6180 net/core/flow_dissector.c:1029
 skb_flow_dissect_flow_keys include/linux/skbuff.h:1390 [inline]
 ___skb_get_hash+0x55/0x680 net/core/flow_dissector.c:1638
 __skb_get_hash+0xd2/0x270 net/core/flow_dissector.c:1703
 skb_get_hash include/linux/skbuff.h:1432 [inline]
 skb_tx_hash net/core/dev.c:3256 [inline]
 netdev_pick_tx+0x335/0xad0 net/core/dev.c:4153
 netdev_core_pick_tx+0x141/0x300 net/core/dev.c:4186
 __dev_queue_xmit+0x797/0x2e50 net/core/dev.c:4261
 neigh_output include/net/neighbour.h:509 [inline]
 ip6_finish_output2+0x108b/0x1530 net/ipv6/ip6_output.c:130
 dst_output include/net/dst.h:452 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0xb7a/0x1410 net/ipv6/ndisc.c:513
 addrconf_rs_timer+0x367/0x640 net/ipv6/addrconf.c:3966
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 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:preempt_count_sub+0x61/0x160 kernel/sched/core.c:5548
Code: ff ff ff 7f 39 cf 7f 25 81 ff ff 00 00 00 0f 93 c1 84 c0 0f 95 c0 08 c8 74 53 65 8b 05 20 27 b0 7e f7 df 65 01 3d 17 27 b0 7e <5b> 5d c3 e8 97 fc 92 02 85 c0 74 f4 48 c7 c0 88 41 8b 8d 48 c1 e8
RSP: 0018:ffffc900032efaa8 EFLAGS: 00000297
RAX: 0000000080000001 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 000000000000019a RSI: ffffffff8a7a41e0 RDI: 00000000ffffffff
RBP: 0000000000000001 R08: ffffc900032ef927 R09: 1ffff9200065df24
R10: dffffc0000000000 R11: fffff5200065df25 R12: dffffc0000000000
R13: ffffffff9635f7c0 R14: 0000019ade45ff82 R15: 0000000000000962
 delay_tsc+0x4a/0xc0 arch/x86/lib/delay.c:77
 try_check_zero+0x2cb/0x340 kernel/rcu/srcutree.c:702
 srcu_advance_state kernel/rcu/srcutree.c:1227 [inline]
 process_srcu+0x1b6/0xca0 kernel/rcu/srcutree.c:1325
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	7f 39                	jg     0x3b
   2:	cf                   	iret
   3:	7f 25                	jg     0x2a
   5:	81 ff ff 00 00 00    	cmp    $0xff,%edi
   b:	0f 93 c1             	setae  %cl
   e:	84 c0                	test   %al,%al
  10:	0f 95 c0             	setne  %al
  13:	08 c8                	or     %cl,%al
  15:	74 53                	je     0x6a
  17:	65 8b 05 20 27 b0 7e 	mov    %gs:0x7eb02720(%rip),%eax        # 0x7eb0273e
  1e:	f7 df                	neg    %edi
  20:	65 01 3d 17 27 b0 7e 	add    %edi,%gs:0x7eb02717(%rip)        # 0x7eb0273e
* 27:	5b                   	pop    %rbx <-- trapping instruction
  28:	5d                   	pop    %rbp
  29:	c3                   	ret
  2a:	e8 97 fc 92 02       	call   0x292fcc6
  2f:	85 c0                	test   %eax,%eax
  31:	74 f4                	je     0x27
  33:	48 c7 c0 88 41 8b 8d 	mov    $0xffffffff8d8b4188,%rax
  3a:	48                   	rex.W
  3b:	c1                   	.byte 0xc1
  3c:	e8                   	.byte 0xe8