------------[ cut here ]------------
WARNING: CPU: 0 PID: 7161 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 7161 Comm: syz.1.849 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 7d 90 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 8d 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: ffffffff81a0a790 RBX: 0000000000000000 RCX: ffff88802aef8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc900000072f7 R09: ffffc900000072c4
R10: dffffc0000000000 R11: fffff52000000e5f R12: ffff88802aef9788
R13: ffffc9000110f030 R14: ffffc90000006f28 R15: 0000000000000000
FS:  00007fce2087e6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c322430 CR3: 0000000070f2b000 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+0x32/0xf20
 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:3256 [inline]
 netdev_pick_tx+0x335/0xad0 net/core/dev.c:4153
 netdev_core_pick_tx+0x12e/0x2e0 net/core/dev.c:4186
 __dev_queue_xmit+0x756/0x2f80 net/core/dev.c:4261
 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:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 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:pvclock_clocksource_read+0x84/0x760 arch/x86/kernel/pvclock.c:68
Code: 03 4c 89 c8 48 c1 e8 03 48 89 84 24 80 00 00 00 48 89 4c 24 48 48 c1 e9 03 48 89 4c 24 78 48 89 f0 48 c1 e8 03 48 89 44 24 70 <4c> 89 d0 48 c1 e8 03 48 89 44 24 68 49 8d 4a 07 48 89 4c 24 40 48
RSP: 0018:ffffc9000340f0d8 EFLAGS: 00000a07
RAX: 1ffffffff1e1d403 RBX: dffffc0000000000 RCX: 1ffffffff1e1d403
RDX: 1ffffffff1e1d400 RSI: ffffffff8f0ea01c RDI: ffffffff8f0ea000
RBP: 00000000001d20c0 R08: ffffffff8f0ea008 R09: ffffffff8f0ea018
R10: ffffffff8f0ea010 R11: ffffffff8f0ea003 R12: 0000000000001bf9
R13: ffff888019339ef8 R14: 1ffffffff1e1d400 R15: 0000000000000002
 kvm_clock_read arch/x86/kernel/kvmclock.c:79 [inline]
 kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:91
 sched_clock_cpu+0x15/0x3c0 kernel/sched/clock.c:371
 local_clock include/linux/sched/clock.h:84 [inline]
 __set_page_owner_handle mm/page_owner.c:164 [inline]
 __set_page_owner+0x174/0x2d0 mm/page_owner.c:182
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x1bbd/0x1ca0 mm/page_alloc.c:4192
 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501
 alloc_slab_page mm/slub.c:1780 [inline]
 allocate_slab mm/slub.c:1917 [inline]
 new_slab+0xc0/0x4b0 mm/slub.c:1980
 ___slab_alloc+0x80a/0xdd0 mm/slub.c:3013
 __slab_alloc mm/slub.c:3100 [inline]
 slab_alloc_node mm/slub.c:3191 [inline]
 __kmalloc_node+0x200/0x3b0 mm/slub.c:4456
 kmalloc_node include/linux/slab.h:630 [inline]
 kvmalloc_node+0x84/0x130 mm/util.c:619
 kvmalloc include/linux/mm.h:816 [inline]
 kvmalloc_array include/linux/mm.h:834 [inline]
 __ptr_ring_init_queue_alloc include/linux/ptr_ring.h:471 [inline]
 ptr_ring_init include/linux/ptr_ring.h:489 [inline]
 skb_array_init include/linux/skb_array.h:182 [inline]
 pfifo_fast_init+0x109/0x6a0 net/sched/sch_generic.c:809
 qdisc_create_dflt+0x11a/0x430 net/sched/sch_generic.c:960
 mq_init+0x2df/0x680 net/sched/sch_mq.c:90
 qdisc_create_dflt+0x11a/0x430 net/sched/sch_generic.c:960
 attach_default_qdiscs net/sched/sch_generic.c:1139 [inline]
 dev_activate+0x192/0x12b0 net/sched/sch_generic.c:1193
 __dev_open+0x33b/0x430 net/core/dev.c:1559
 __dev_change_flags+0x20d/0x6a0 net/core/dev.c:8879
 dev_change_flags+0x82/0x1a0 net/core/dev.c:8950
 dev_ifsioc+0x130/0xd50 net/core/dev_ioctl.c:324
 dev_ioctl+0x545/0xe30 net/core/dev_ioctl.c:572
 sock_do_ioctl+0x245/0x320 net/socket.c:1161
 sock_ioctl+0x4d2/0x710 net/socket.c:1266
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 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: 0033:0x7fce22624dd9
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:00007fce2087e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fce2289dfa0 RCX: 00007fce22624dd9
RDX: 0000200000002280 RSI: 0000000000008914 RDI: 000000000000004d
RBP: 00007fce226bad69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fce2289e038 R14: 00007fce2289dfa0 R15: 00007ffdaf1d5f48
 </TASK>
----------------
Code disassembly (best guess):
   0:	03 4c 89 c8          	add    -0x38(%rcx,%rcx,4),%ecx
   4:	48 c1 e8 03          	shr    $0x3,%rax
   8:	48 89 84 24 80 00 00 	mov    %rax,0x80(%rsp)
   f:	00
  10:	48 89 4c 24 48       	mov    %rcx,0x48(%rsp)
  15:	48 c1 e9 03          	shr    $0x3,%rcx
  19:	48 89 4c 24 78       	mov    %rcx,0x78(%rsp)
  1e:	48 89 f0             	mov    %rsi,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	48 89 44 24 70       	mov    %rax,0x70(%rsp)
* 2a:	4c 89 d0             	mov    %r10,%rax <-- trapping instruction
  2d:	48 c1 e8 03          	shr    $0x3,%rax
  31:	48 89 44 24 68       	mov    %rax,0x68(%rsp)
  36:	49 8d 4a 07          	lea    0x7(%r10),%rcx
  3a:	48 89 4c 24 40       	mov    %rcx,0x40(%rsp)
  3f:	48                   	rex.W