------------[ cut here ]------------
WARNING: CPU: 1 PID: 5095 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 1 PID: 5095 Comm: syz-executor189 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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 ab ba d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 94 ba 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:ffffc90000dcf900 EFLAGS: 00010046
RAX: ffffffff81aacafc RBX: 0000000000000000 RCX: ffff888028d99dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aaca0d R09: fffffbfff2131821
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000008 R14: 0000000000000000 R15: ffffc90000dcf968
FS: 000055557f3f8380(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbac763e110 CR3: 000000007b149000 CR4: 00000000003506e0
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_02073d59a3c0f06f+0x3d/0xbb4
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_run5+0x222/0x3e0 kernel/trace/bpf_trace.c:1918
trace_signal_generate+0x182/0x1f0 include/trace/events/signal.h:50
__send_signal+0xadc/0xd40 kernel/signal.c:1184
do_send_sig_info kernel/signal.c:1294 [inline]
group_send_sig_info+0x260/0x2d0 kernel/signal.c:1442
bpf_send_signal_common+0x2d8/0x420 kernel/trace/bpf_trace.c:824
____bpf_send_signal kernel/trace/bpf_trace.c:829 [inline]
bpf_send_signal+0x15/0x20 kernel/trace/bpf_trace.c:827
bpf_prog_8cc4ff36b5985b6a+0x15/0x97c
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_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1916
__bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:138
trace_kmem_cache_free include/trace/events/kmem.h:138 [inline]
kmem_cache_free+0x1ce/0x1f0 mm/slub.c:3516
packet_rcv+0x151/0x1210 net/packet/af_packet.c:2243
dev_queue_xmit_nit+0x9bb/0xae0 net/core/dev.c:2342
xmit_one net/core/dev.c:3612 [inline]
dev_hard_start_xmit+0x137/0x7a0 net/core/dev.c:3633
sch_direct_xmit+0x2b2/0x5e0 net/sched/sch_generic.c:342
__dev_xmit_skb net/core/dev.c:3852 [inline]
__dev_queue_xmit+0x1861/0x32b0 net/core/dev.c:4221
NF_HOOK+0x36a/0x410 include/linux/netfilter.h:301
arp_process+0x16db/0x20f0 net/ipv4/arp.c:830
NF_HOOK+0x36a/0x410 include/linux/netfilter.h:301
__netif_receive_skb_list_ptype net/core/dev.c:5541 [inline]
__netif_receive_skb_list_core+0x818/0x890 net/core/dev.c:5584
__netif_receive_skb_list net/core/dev.c:5636 [inline]
netif_receive_skb_list_internal+0x9ed/0xdf0 net/core/dev.c:5727
gro_normal_list net/core/dev.c:5881 [inline]
napi_complete_done+0x352/0x820 net/core/dev.c:6619
virtqueue_napi_complete drivers/net/virtio_net.c:357 [inline]
virtnet_poll+0xbd1/0x1260 drivers/net/virtio_net.c:1592
__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:__x64_sys_exit_group+0x0/0x40 kernel/exit.c:1005
Code: 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 0f 8c 0c ff ff ff 48 8b 3c 24 e8 df 4e 7d 00 e9 fe fe ff ff e8 15 66 33 00 0f 0b 0f 1f 00 <53> 48 89 fb 48 83 c3 70 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00
RSP: 0018:ffffc90002e8ff28 EFLAGS: 00000287
RAX: 00000000000000e7 RBX: ffffc90002e8ff30 RCX: 00000000000000e7
RDX: dffffc0000000000 RSI: 00000000000000e7 RDI: ffffc90002e8ff58
RBP: ffffc90002e8ff48 R08: ffffffff81870420 R09: fffffbfff1c150ee
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc90002e8ff58 R15: 0000000000000000
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: 0033:0x7fbac75c21b9
Code: 90 49 c7 c0 b8 ff ff ff be e7 00 00 00 ba 3c 00 00 00 eb 12 0f 1f 44 00 00 89 d0 0f 05 48 3d 00 f0 ff ff 77 1c f4 89 f0 0f 05 <48> 3d 00 f0 ff ff 76 e7 f7 d8 64 41 89 00 eb df 0f 1f 80 00 00 00
RSP: 002b:00007ffdcc250cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbac75c21b9
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007fbac763d2b0 R08: ffffffffffffffb8 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbac763d2b0
R13: 0000000000000000 R14: 00007fbac763dd00 R15: 00007fbac7593350
----------------
Code disassembly (best guess):
0: 48 8b 0c 24 mov (%rsp),%rcx
4: 80 e1 07 and $0x7,%cl
7: 80 c1 03 add $0x3,%cl
a: 38 c1 cmp %al,%cl
c: 0f 8c 0c ff ff ff jl 0xffffff1e
12: 48 8b 3c 24 mov (%rsp),%rdi
16: e8 df 4e 7d 00 call 0x7d4efa
1b: e9 fe fe ff ff jmp 0xffffff1e
20: e8 15 66 33 00 call 0x33663a
25: 0f 0b ud2
27: 0f 1f 00 nopl (%rax)
* 2a: 53 push %rbx <-- trapping instruction
2b: 48 89 fb mov %rdi,%rbx
2e: 48 83 c3 70 add $0x70,%rbx
32: 48 89 d8 mov %rbx,%rax
35: 48 c1 e8 03 shr $0x3,%rax
39: 48 rex.W
3a: b9 00 00 00 00 mov $0x0,%ecx