------------[ cut here ]------------
WARNING: CPU: 1 PID: 4187 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4187 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:ffffc90000dcfec8 EFLAGS: 00010246
RAX: ffffffff81a08ea0 RBX: 0000000000000000 RCX: ffff88807c125940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8f0e6048 R09: ffffffff8f0e6058
R10: ffffffff8f0e6050 R11: ffffffff8f0e6043 R12: ffff88807c1270c8
R13: ffffc900012bc000 R14: ffffc90000dcff28 R15: 0000000000000000
FS: 000055558b6b7500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe1d13d0198 CR3: 0000000063192000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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+0x32/0x7d0
bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
__bpf_prog_run include/linux/filter.h:621 [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+0x33e/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:cmpxchg_double_slab+0x122/0x270 mm/slub.c:505
Code: 02 00 00 0f 84 8b 00 00 00 fb e9 85 00 00 00 41 8d 46 20 a8 0f 0f 85 2c 01 00 00 4c 89 c9 4c 89 e0 4c 89 fa f0 49 0f c7 4e 20 01 75 62 eb 64 49 f7 46 08 01 00 00 00 0f 85 0b 01 00 00 49 8b
RSP: 0018:ffffc90002ebef20 EFLAGS: 00000246
RAX: ffff88801e860780 RBX: ffff88801e860140 RCX: 00000000000c0008
RDX: 00000000000c0009 RSI: ffffea00007a1800 RDI: ffff88801bbe4140
RBP: 0000000000000000 R08: ffff88801e860140 R09: 00000000000c0008
R10: dffffc0000000000 R11: fffffbfff203a22b R12: ffff88801e860780
R13: 00000000000c0008 R14: ffffea00007a1800 R15: 00000000000c0009
__slab_free+0x6a/0x250 mm/slub.c:3355
qlist_free_all+0x35/0x90 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x150/0x160 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x2f/0xd0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3225 [inline]
__kmalloc_node+0x15a/0x3b0 mm/slub.c:4456
kmalloc_node include/linux/slab.h:630 [inline]
kvmalloc_node+0x84/0x130 mm/util.c:619
xt_jumpstack_alloc net/netfilter/x_tables.c:1354 [inline]
xt_replace_table+0x160/0x750 net/netfilter/x_tables.c:1393
__do_replace+0x150/0x9c0 net/ipv6/netfilter/ip6_tables.c:1083
do_replace net/ipv6/netfilter/ip6_tables.c:1160 [inline]
do_ip6t_set_ctl+0xaaa/0xd90 net/ipv6/netfilter/ip6_tables.c:1646
nf_setsockopt+0x25f/0x280 net/netfilter/nf_sockopt.c:101
ipv6_setsockopt+0x2086/0x3cc0 net/ipv6/ipv6_sockglue.c:1014
tcp_setsockopt+0x240/0x1e90 net/ipv4/tcp.c:3719
__sys_setsockopt+0x2bf/0x3d0 net/socket.c:2212
__do_sys_setsockopt net/socket.c:2223 [inline]
__se_sys_setsockopt net/socket.c:2220 [inline]
__x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2220
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: 0033:0x7fe1d118b71a
Code: 48 83 ec 10 48 63 c9 48 63 ff 45 89 c9 6a 2c e8 ec 99 fb ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 49 89 ca b8 36 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:00007fff8e33e988 EFLAGS: 00000202 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fff8e33ea10 RCX: 00007fe1d118b71a
RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00000000000003b8 R09: 0000000000000000
R10: 00007fe1d13d0800 R11: 0000000000000202 R12: 00007fe1d13d07a0
R13: 00007fff8e33e9ac R14: 0000000000000000 R15: 00007fe1d13d0e60
----------------
Code disassembly (best guess):
0: 02 00 add (%rax),%al
2: 00 0f add %cl,(%rdi)
4: 84 8b 00 00 00 fb test %cl,-0x5000000(%rbx)
a: e9 85 00 00 00 jmp 0x94
f: 41 8d 46 20 lea 0x20(%r14),%eax
13: a8 0f test $0xf,%al
15: 0f 85 2c 01 00 00 jne 0x147
1b: 4c 89 c9 mov %r9,%rcx
1e: 4c 89 e0 mov %r12,%rax
21: 4c 89 fa mov %r15,%rdx
24: f0 49 0f c7 4e 20 lock cmpxchg16b 0x20(%r14)
* 2a: b0 01 mov $0x1,%al <-- trapping instruction
2c: 75 62 jne 0x90
2e: eb 64 jmp 0x94
30: 49 f7 46 08 01 00 00 testq $0x1,0x8(%r14)
37: 00
38: 0f 85 0b 01 00 00 jne 0x149
3e: 49 rex.WB
3f: 8b .byte 0x8b