------------[ cut here ]------------
WARNING: CPU: 0 PID: 10091 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 10091 Comm: syz.2.12949 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 7d 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 00 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:ffffc90000006ec8 EFLAGS: 00010246
RAX: ffffffff81a08ea0 RBX: 0000000000000000 RCX: ffff8880222dbb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc900000072f7 R09: ffffc900000072c4
R10: dffffc0000000000 R11: fffff52000000e5f R12: ffff8880222dd308
R13: ffffc9000124d030 R14: ffffc90000006f28 R15: 0000000000000000
FS:  00007f88249a96c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fde63562000 CR3: 0000000065fd2000 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_user kernel/trace/bpf_trace.c:166 [inline]
 bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
 bpf_prog_f2594087b0f175cc+0x32/0x930
 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_run_pin_on_cpu include/linux/filter.h:652 [inline]
 bpf_flow_dissect+0x12b/0x3f0 net/core/flow_dissector.c:896
 __skb_flow_dissect+0x792/0x60b0 net/core/flow_dissector.c:1024
 skb_flow_dissect_flow_keys include/linux/skbuff.h:1390 [inline]
 ___skb_get_hash+0x55/0x680 net/core/flow_dissector.c:1583
 __skb_get_hash+0xd2/0x270 net/core/flow_dissector.c:1648
 skb_get_hash include/linux/skbuff.h:1432 [inline]
 skb_tx_hash net/core/dev.c:3243 [inline]
 netdev_pick_tx+0x335/0xad0 net/core/dev.c:4140
 netdev_core_pick_tx+0x12e/0x2e0 net/core/dev.c:4173
 __dev_queue_xmit+0x756/0x2fd0 net/core/dev.c:4248
 hsr_xmit net/hsr/hsr_forward.c:340 [inline]
 hsr_forward_do net/hsr/hsr_forward.c:431 [inline]
 hsr_forward_skb+0xfd2/0x1700 net/hsr/hsr_forward.c:584
 send_hsr_supervision_frame+0x5f7/0xb80 net/hsr/hsr_device.c:349
 hsr_announce+0x168/0x310 net/hsr/hsr_device.c:405
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x53a/0x7f0 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x339/0x830 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:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:212 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:156 [inline]
RIP: 0010:wrmsr arch/x86/include/asm/msr.h:263 [inline]
RIP: 0010:native_apic_msr_write+0x35/0x50 arch/x86/include/asm/apic.h:208
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 89 f6 31 d2 e9 7f 39 d0 02 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc900034cfa60 EFLAGS: 00000246
RAX: 00000000000000f6 RBX: ffffffff8be30a20 RCX: 000000000000083f
RDX: 0000000000000000 RSI: 00000000000000f6 RDI: 000000000000083f
RBP: 0000000000000000 R08: ffff8880b9033d77 R09: 1ffff110172067ae
R10: dffffc0000000000 R11: ffffed10172067af R12: 0000000000000001
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000020
 arch_irq_work_raise+0x82/0xd0 arch/x86/kernel/irq_work.c:31
 irq_work_queue+0x95/0x140 kernel/irq_work.c:75
 bpf_ringbuf_commit kernel/bpf/ringbuf.c:-1 [inline]
 ____bpf_ringbuf_discard kernel/bpf/ringbuf.c:435 [inline]
 bpf_ringbuf_discard+0x117/0x170 kernel/bpf/ringbuf.c:433
 bpf_prog_8c296d0debb99b26+0x3e/0xcb4
 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_test_run+0x2a8/0x800 net/bpf/test_run.c:119
 bpf_prog_test_run_skb+0x9cc/0x1180 net/bpf/test_run.c:669
 bpf_prog_test_run+0x31e/0x390 kernel/bpf/syscall.c:3374
 __sys_bpf+0x5a5/0x6f0 kernel/bpf/syscall.c:4675
 __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: 0033:0x7f882676ecb9
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:00007f88249a9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f88269ea090 RCX: 00007f882676ecb9
RDX: 000000000000004c RSI: 0000200000000240 RDI: 000000000000000a
RBP: 00007f88267dcbf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f88269ea128 R14: 00007f88269ea090 R15: 00007ffe4aef9a18
 </TASK>
----------------
Code disassembly (best guess):
   0:	74 2a                	je     0x2c
   2:	83 ff 30             	cmp    $0x30,%edi
   5:	74 25                	je     0x2c
   7:	eb 10                	jmp    0x19
   9:	81 ff d0 00 00 00    	cmp    $0xd0,%edi
   f:	74 1b                	je     0x2c
  11:	81 ff e0 00 00 00    	cmp    $0xe0,%edi
  17:	74 13                	je     0x2c
  19:	c1 ef 04             	shr    $0x4,%edi
  1c:	81 c7 00 08 00 00    	add    $0x800,%edi
  22:	89 f9                	mov    %edi,%ecx
  24:	89 f0                	mov    %esi,%eax
  26:	31 d2                	xor    %edx,%edx
  28:	0f 30                	wrmsr
* 2a:	66 90                	xchg   %ax,%ax <-- trapping instruction
  2c:	c3                   	ret
  2d:	89 f6                	mov    %esi,%esi
  2f:	31 d2                	xor    %edx,%edx
  31:	e9 7f 39 d0 02       	jmp    0x2d039b5
  36:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  3d:	00 00 00