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WARNING: CPU: 1 PID: 4696 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4696 Comm: syz.0.393 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 5d 95 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 e0 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:ffffc90000dd0498 EFLAGS: 00010246
RAX: ffffffff81a0b710 RBX: 0000000000000008 RCX: ffff888078b43b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: 1ffffffff203b018
R10: dffffc0000000000 R11: fffffbfff203b019 R12: ffff888078b45308
R13: dffffc0000000000 R14: ffffc90000dd0500 R15: 0000000000000000
FS:  0000555563fb3500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31d63fff CR3: 000000006f2b0000 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_user kernel/trace/bpf_trace.c:166 [inline]
 bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
 bpf_prog_a80a2db5f03b572f+0x3d/0xd04
 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_prog_run_clear_cb+0x94/0x1a0 include/linux/filter.h:806
 run_filter+0x12a/0x220 net/packet/af_packet.c:2101
 packet_rcv+0x388/0x1210 net/packet/af_packet.c:2174
 dev_queue_xmit_nit+0xa69/0xb00 net/core/dev.c:2386
 xmit_one net/core/dev.c:3657 [inline]
 dev_hard_start_xmit+0x13e/0x7e0 net/core/dev.c:3678
 __dev_queue_xmit+0x1a9b/0x2f80 net/core/dev.c:4305
 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:preempt_count_add+0x3e/0x190 kernel/sched/core.c:5512
Code: 2d 96 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 eb 00 00 00 83 3d 42 6a db 14 00 75 07 65 8b 05 81 ea af 7e 65 01 3d 7a ea af 7e <48> c7 c0 80 ef 2d 96 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 e6 00
RSP: 0018:ffffc9000134f8a8 EFLAGS: 00000282
RAX: 0000000080000000 RBX: ffffc9000134f988 RCX: ffffffff962def03
RDX: dffffc0000000000 RSI: ffffffff816779af RDI: 0000000000000001
RBP: ffffc9000134f9d0 R08: ffffc9000134fa50 R09: 0000000000000007
R10: dffffc0000000000 R11: fffff52000269f3d R12: ffffffff816779af
R13: ffffc9000134fed0 R14: dffffc0000000000 R15: dffffc0000000000
 unwind_next_frame+0xac/0x1d90 arch/x86/kernel/unwind_orc.c:433
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1710 [inline]
 slab_free_freelist_hook+0xea/0x170 mm/slub.c:1736
 slab_free mm/slub.c:3504 [inline]
 kmem_cache_free+0x8f/0x210 mm/slub.c:3520
 file_free fs/file_table.c:55 [inline]
 __fput+0x627/0x930 fs/file_table.c:324
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7efd2c6f1e59
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:00007ffdf6226ea8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffdf6226f90 RCX: 00007efd2c6f1e59
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000015566 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b31120000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efd2c96afac R14: 00007efd2c96afa8 R15: 00007efd2c96afa0
 </TASK>
----------------
Code disassembly (best guess):
   0:	2d 96 48 c1 e8       	sub    $0xe8c14896,%eax
   5:	03 42 0f             	add    0xf(%rdx),%eax
   8:	b6 04                	mov    $0x4,%dh
   a:	38 84 c0 0f 85 eb 00 	cmp    %al,0xeb850f(%rax,%rax,8)
  11:	00 00                	add    %al,(%rax)
  13:	83 3d 42 6a db 14 00 	cmpl   $0x0,0x14db6a42(%rip)        # 0x14db6a5c
  1a:	75 07                	jne    0x23
  1c:	65 8b 05 81 ea af 7e 	mov    %gs:0x7eafea81(%rip),%eax        # 0x7eafeaa4
  23:	65 01 3d 7a ea af 7e 	add    %edi,%gs:0x7eafea7a(%rip)        # 0x7eafeaa4
* 2a:	48 c7 c0 80 ef 2d 96 	mov    $0xffffffff962def80,%rax <-- trapping instruction
  31:	48 c1 e8 03          	shr    $0x3,%rax
  35:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax
  3a:	84 c0                	test   %al,%al
  3c:	0f                   	.byte 0xf
  3d:	85 e6                	test   %esp,%esi