------------[ cut here ]------------
WARNING: CPU: 1 PID: 5002 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 1 PID: 5002 Comm: syz.2.242 Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 cb c6 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b4 c6 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000dd0690 EFLAGS: 00010246
RAX: ffffffff81aaacec RBX: 0000000000000000 RCX: ffff8880284b1dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aaabfd R09: ffffed10050963b9
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90000dd0708
FS: 00007fdc8bb446c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2cdb4f CR3: 0000000061382000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xe4/0x180 kernel/trace/bpf_trace.c:277
bpf_prog_3d2613b5dfc7747f+0x32/0xeb0
bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run4+0x1ea/0x390 kernel/trace/bpf_trace.c:1917
__bpf_trace_mm_page_alloc+0xba/0xe0 include/trace/events/kmem.h:201
trace_mm_page_alloc include/trace/events/kmem.h:201 [inline]
__alloc_pages+0x6e0/0x700 mm/page_alloc.c:5486
skb_page_frag_refill+0x220/0x4b0 net/core/sock.c:2661
add_recvbuf_mergeable drivers/net/virtio_net.c:1329 [inline]
try_fill_recv+0x49d/0x17d0 drivers/net/virtio_net.c:1370
virtnet_receive drivers/net/virtio_net.c:1484 [inline]
virtnet_poll+0x83a/0x1260 drivers/net/virtio_net.c:1585
__napi_poll+0xc7/0x440 net/core/dev.c:7043
napi_poll net/core/dev.c:7110 [inline]
net_rx_action+0x617/0xda0 net/core/dev.c:7200
handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
__do_softirq kernel/softirq.c:592 [inline]
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
common_interrupt+0xb3/0xd0 arch/x86/kernel/irq.c:240
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 d2 44 8c f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 77 75 19 f7 65 8b 05 98 68 c4 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90002da75e0 EFLAGS: 00000206
RAX: da5970ae409ce300 RBX: 1ffff920005b4ec0 RCX: ffffffff81632d68
RDX: dffffc0000000000 RSI: ffffffff8a8b2a80 RDI: 0000000000000001
RBP: ffffc90002da7680 R08: dffffc0000000000 R09: fffffbfff20ec821
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff920005b4ebc R14: ffffc90002da7600 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
pcpu_alloc+0xa60/0x17c0 mm/percpu.c:1850
__percpu_counter_init+0xf4/0x2b0 lib/percpu_counter.c:149
nfsd_percpu_counters_init fs/nfsd/stats.c:79 [inline]
nfsd_stat_counters_init+0x2b/0xa0 fs/nfsd/stats.c:108
nfsd_init_net+0x65/0x1c0 fs/nfsd/nfsctl.c:1461
ops_init+0x35d/0x610 net/core/net_namespace.c:138
setup_net+0x358/0x9e0 net/core/net_namespace.c:332
copy_net_ns+0x392/0x5d0 net/core/net_namespace.c:476
create_new_namespaces+0x425/0x7a0 kernel/nsproxy.c:110
copy_namespaces+0x365/0x3b0 kernel/nsproxy.c:178
copy_process+0x1841/0x3ef0 kernel/fork.c:2208
kernel_clone+0x210/0x960 kernel/fork.c:2603
__do_sys_clone kernel/fork.c:2720 [inline]
__se_sys_clone kernel/fork.c:2704 [inline]
__x64_sys_clone+0x23f/0x290 kernel/fork.c:2704
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fdc8d6cc759
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdc8bb43fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fdc8d883f80 RCX: 00007fdc8d6cc759
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000044002000
RBP: 00007fdc8d73f75e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdc8d883f80 R15: 00007ffc8fd362a8
----------------
Code disassembly (best guess):
0: 9c pushf
1: 8f 44 24 20 pop 0x20(%rsp)
5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1)
a: 74 08 je 0x14
c: 4c 89 f7 mov %r14,%rdi
f: e8 d2 44 8c f7 call 0xf78c44e6
14: f6 44 24 21 02 testb $0x2,0x21(%rsp)
19: 75 4e jne 0x69
1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 77 75 19 f7 call 0xf71975a6 <-- trapping instruction
2f: 65 8b 05 98 68 c4 75 mov %gs:0x75c46898(%rip),%eax # 0x75c468ce
36: 85 c0 test %eax,%eax
38: 74 3f je 0x79
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss