------------[ cut here ]------------
WARNING: CPU: 0 PID: 15566 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 15566 Comm: syz.4.1934 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 4d 7a 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 76 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:ffffc90000006e88 EFLAGS: 00010246
RAX: ffffffff81a0ac90 RBX: 0000000000000000 RCX: ffff88802d2ad940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc900000072b7 R09: ffffc90000007284
R10: dffffc0000000000 R11: fffff52000000e57 R12: ffff88802d2af0e8
R13: ffffc900013b8030 R14: ffffc90000006ee8 R15: 0000000000000000
FS:  00007f868374a6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34023ffc CR3: 000000004d4e2000 CR4: 00000000003506f0
DR0: 0000000000000008 DR1: 0000200000001140 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+0x32/0xcf0
 bpf_dispatcher_nop_func include/linux/bpf.h:890 [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:4154
 netdev_core_pick_tx+0x141/0x300 net/core/dev.c:4187
 __dev_queue_xmit+0x797/0x2e50 net/core/dev.c:4262
 hsr_xmit net/hsr/hsr_forward.c:340 [inline]
 hsr_forward_do net/hsr/hsr_forward.c:431 [inline]
 hsr_forward_skb+0xf82/0x16b0 net/hsr/hsr_forward.c:584
 send_hsr_supervision_frame+0x5f7/0xb90 net/hsr/hsr_device.c:348
 hsr_announce+0x168/0x310 net/hsr/hsr_device.c:404
 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_add+0x13c/0x190 kernel/sched/core.c:5512
Code: 48 c7 c1 80 bf 11 97 80 e1 07 80 c1 03 38 c1 0f 8c 00 ff ff ff 89 fb 48 c7 c7 80 bf 11 97 e8 6b 0f 6c 00 89 df e9 eb fe ff ff <48> c7 c1 80 bf 11 97 80 e1 07 80 c1 03 38 c1 0f 8c 05 ff ff ff 89
RSP: 0018:ffffc9000344fb30 EFLAGS: 00000202
RAX: 0000000000000004 RBX: ffff888075d9f358 RCX: ffffffff9711bf03
RDX: ffffc90010e02000 RSI: 0000000000003dc2 RDI: 0000000000000001
RBP: ffffc9000344fc40 R08: 0000000000000002 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1cd6506 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff88804bc8a8c2 R15: dffffc0000000000
 is_module_address+0xe/0x40 kernel/module.c:4735
 static_obj kernel/locking/lockdep.c:818 [inline]
 lockdep_init_map_type+0x203/0x7b0 kernel/locking/lockdep.c:4869
 htab_init_buckets kernel/bpf/hashtab.c:148 [inline]
 htab_map_alloc+0x9fc/0x1670 kernel/bpf/hashtab.c:551
 find_and_alloc_map kernel/bpf/syscall.c:129 [inline]
 map_create+0x481/0x2330 kernel/bpf/syscall.c:881
 __sys_bpf+0x30a/0x6f0 kernel/bpf/syscall.c:4639
 __do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
 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: 0033:0x7f86854f2559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f868374a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f8685779fa0 RCX: 00007f86854f2559
RDX: 0000000000000048 RSI: 0000200000000140 RDI: 0000000000000000
RBP: 00007f86855898b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f868577a038 R14: 00007f8685779fa0 R15: 00007ffd24604618
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 c7 c1 80 bf 11 97 	mov    $0xffffffff9711bf80,%rcx
   7:	80 e1 07             	and    $0x7,%cl
   a:	80 c1 03             	add    $0x3,%cl
   d:	38 c1                	cmp    %al,%cl
   f:	0f 8c 00 ff ff ff    	jl     0xffffff15
  15:	89 fb                	mov    %edi,%ebx
  17:	48 c7 c7 80 bf 11 97 	mov    $0xffffffff9711bf80,%rdi
  1e:	e8 6b 0f 6c 00       	call   0x6c0f8e
  23:	89 df                	mov    %ebx,%edi
  25:	e9 eb fe ff ff       	jmp    0xffffff15
* 2a:	48 c7 c1 80 bf 11 97 	mov    $0xffffffff9711bf80,%rcx <-- trapping instruction
  31:	80 e1 07             	and    $0x7,%cl
  34:	80 c1 03             	add    $0x3,%cl
  37:	38 c1                	cmp    %al,%cl
  39:	0f 8c 05 ff ff ff    	jl     0xffffff44
  3f:	89                   	.byte 0x89