------------[ cut here ]------------
WARNING: CPU: 0 PID: 4186 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 4186 Comm: syz-executor 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: ffff88807a861dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc900000072f7 R09: ffffc900000072c4
R10: dffffc0000000000 R11: fffff52000000e5f R12: ffff88807a863548
R13: ffffc900010f9030 R14: ffffc90000006f28 R15: 0000000000000000
FS: 000055555a5a4500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556367aa28 CR3: 000000006291c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
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+0x32/0x9c0
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
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xbc/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 8f 0b 8d f7 65 8b 05 10 18 3d 76 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90002ebef20 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a02 RCX: ac6c8fb557e6f700
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: 0000000000000001
RBP: ffffc90002ebefb0 R08: ffffffff901d10f7 R09: 1ffffffff203a21e
R10: dffffc0000000000 R11: fffffbfff203a21f R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88802bd1bcc0 R15: 1ffff920005d7de4
finish_task_switch+0x267/0x640 kernel/sched/core.c:4952
context_switch kernel/sched/core.c:5052 [inline]
__schedule+0x11f7/0x43c0 kernel/sched/core.c:6395
preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6799
irqentry_exit+0x63/0x70 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:344 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:895 [inline]
RIP: 0010:trace_lock_release include/trace/events/lock.h:58 [inline]
RIP: 0010:lock_release+0x8f/0x8a0 kernel/locking/lockdep.c:5634
Code: f1 f1 f8 f2 f2 f2 4b 89 04 2c 43 c7 44 2c 08 f8 f3 f3 f3 0f 1f 44 00 00 65 8b 1d 64 90 a4 7e 83 fb 08 0f 83 4e 05 00 00 89 d8 e8 06 48 8d 3c c5 a8 d8 89 8d be 08 00 00 00 e8 3c a0 60 00 89
RSP: 0018:ffffc90002ebf360 EFLAGS: 00000297
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffff88807a861dc0
RDX: 0000000000000000 RSI: ffffffff81aeabe7 RDI: ffff88807cb1dc28
RBP: ffffc90002ebf470 R08: dffffc0000000000 R09: 1ffffffff203a21e
R10: dffffc0000000000 R11: fffffbfff203a21f R12: 1ffff920005d7e78
R13: dffffc0000000000 R14: 00007ffca746f14c R15: 00007ffca746f150
__clear_user arch/x86/lib/usercopy_64.c:20 [inline]
clear_user+0xd2/0x150 arch/x86/lib/usercopy_64.c:54
xt_data_to_user net/netfilter/x_tables.c:319 [inline]
xt_target_to_user+0x19f/0x270 net/netfilter/x_tables.c:344
copy_entries_to_user net/ipv4/netfilter/ip_tables.c:860 [inline]
get_entries net/ipv4/netfilter/ip_tables.c:1023 [inline]
do_ipt_get_ctl+0xcf9/0x1110 net/ipv4/netfilter/ip_tables.c:1669
nf_getsockopt+0x25e/0x280 net/netfilter/nf_sockopt.c:116
ip_getsockopt+0x1256/0x16a0 net/ipv4/ip_sockglue.c:1797
tcp_getsockopt+0x200/0x25a0 net/ipv4/tcp.c:4319
__sys_getsockopt+0x1b0/0x230 net/socket.c:2256
__do_sys_getsockopt net/socket.c:2271 [inline]
__se_sys_getsockopt net/socket.c:2268 [inline]
__x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2268
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: 0033:0x7fbaca2846aa
Code: 48 83 ec 10 89 d2 48 63 ff 45 31 c9 6a 2a 45 31 c0 31 c9 e8 58 9a fb ff 48 83 c4 18 c3 0f 1f 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 e8 ff ff ff f7
RSP: 002b:00007ffca746f008 EFLAGS: 00000202 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007ffca746f090 RCX: 00007fbaca2846aa
RDX: 0000000000000041 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00007ffca746f02c R09: 0000000000000000
R10: 00007ffca746f090 R11: 0000000000000202 R12: 00007fbaca4cb2a0
R13: 00007ffca746f02c R14: 0000000000000000 R15: 00007fbaca4cc020
----------------
Code disassembly (best guess):
0: c7 44 24 20 00 00 00 movl $0x0,0x20(%rsp)
7: 00
8: 9c pushf
9: 8f 44 24 20 pop 0x20(%rsp)
d: f7 44 24 20 00 02 00 testl $0x200,0x20(%rsp)
14: 00
15: 41 c6 04 07 f8 movb $0xf8,(%r15,%rax,1)
1a: 75 4b jne 0x67
1c: f7 c3 00 02 00 00 test $0x200,%ebx
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 8f 0b 8d f7 call 0xf78d0bbe <-- trapping instruction
2f: 65 8b 05 10 18 3d 76 mov %gs:0x763d1810(%rip),%eax # 0x763d1846
36: 85 c0 test %eax,%eax
38: 74 3c je 0x76
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss