------------[ cut here ]------------
WARNING: CPU: 0 PID: 3720 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 0 PID: 3720 Comm: kworker/u4:9 Not tainted 5.15.168-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_nc_worker
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 fb c7 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e4 c7 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: 0000:ffffc900000068c0 EFLAGS: 00010246
RAX: ffffffff81aaab4c RBX: 0000000000000000 RCX: ffff88807b1f1dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aaaa5d R09: fffffbfff20ec621
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000008 R14: 0000000000000000 R15: ffffc90000006928
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2f441c CR3: 0000000028944000 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_02073d59a3c0f06f+0x3d/0x774
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:1880 [inline]
bpf_trace_run2+0x19e/0x340 kernel/trace/bpf_trace.c:1917
__bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
trace_kfree include/trace/events/kmem.h:118 [inline]
kfree+0x22f/0x270 mm/slub.c:4549
skb_free_head net/core/skbuff.c:655 [inline]
skb_release_data+0x73a/0x8a0 net/core/skbuff.c:677
skb_release_all net/core/skbuff.c:742 [inline]
__kfree_skb+0x4c/0x60 net/core/skbuff.c:756
tcp_clean_rtx_queue net/ipv4/tcp_input.c:3395 [inline]
tcp_ack+0x2326/0x6ab0 net/ipv4/tcp_input.c:3952
tcp_rcv_established+0xc19/0x1e20 net/ipv4/tcp_input.c:6041
tcp_v4_do_rcv+0x423/0x960 net/ipv4/tcp_ipv4.c:1731
tcp_v4_rcv+0x2740/0x2d80 net/ipv4/tcp_ipv4.c:2143
ip_protocol_deliver_rcu+0x381/0x730 net/ipv4/ip_input.c:204
ip_local_deliver_finish+0x1db/0x320 net/ipv4/ip_input.c:231
NF_HOOK+0x364/0x410 include/linux/netfilter.h:302
dst_input include/net/dst.h:453 [inline]
ip_sublist_rcv_finish net/ipv4/ip_input.c:577 [inline]
ip_list_rcv_finish net/ipv4/ip_input.c:628 [inline]
ip_sublist_rcv+0xb0f/0xe50 net/ipv4/ip_input.c:636
ip_list_rcv+0x422/0x470 net/ipv4/ip_input.c:671
__netif_receive_skb_list_ptype net/core/dev.c:5532 [inline]
__netif_receive_skb_list_core+0x6b1/0x890 net/core/dev.c:5580
__netif_receive_skb_list net/core/dev.c:5632 [inline]
netif_receive_skb_list_internal+0x9ed/0xdf0 net/core/dev.c:5723
gro_normal_list net/core/dev.c:5877 [inline]
napi_complete_done+0x352/0x820 net/core/dev.c:6615
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:7039
napi_poll net/core/dev.c:7106 [inline]
net_rx_action+0x617/0xda0 net/core/dev.c:7196
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:batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:409 [inline]
RIP: 0010:batadv_nc_worker+0x246/0x5b0 net/batman-adv/network-coding.c:723
Code: 9e 8b be 01 03 00 00 48 c7 c2 c0 7b 9e 8b e8 71 d7 51 f7 e8 9c 96 5a f7 e8 47 80 00 00 49 ff c4 48 8b 44 24 18 42 0f b6 04 28 <84> c0 48 8b 14 24 75 11 8b 02 49 39 c4 73 25 e8 06 2e 6f f7 e9 39
RSP: 0000:ffffc90004817bf8 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc90004817b03
RDX: 0000000000000002 RSI: ffffffff8a8b3d20 RDI: ffffffff8ad90280
RBP: 0000000000000001 R08: dffffc0000000000 R09: fffffbfff1bd2cbe
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000161
R13: dffffc0000000000 R14: ffff88801b3f4c80 R15: ffff888072382dc0
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
----------------
Code disassembly (best guess):
0: 9e sahf
1: 8b be 01 03 00 00 mov 0x301(%rsi),%edi
7: 48 c7 c2 c0 7b 9e 8b mov $0xffffffff8b9e7bc0,%rdx
e: e8 71 d7 51 f7 call 0xf751d784
13: e8 9c 96 5a f7 call 0xf75a96b4
18: e8 47 80 00 00 call 0x8064
1d: 49 ff c4 inc %r12
20: 48 8b 44 24 18 mov 0x18(%rsp),%rax
25: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
* 2a: 84 c0 test %al,%al <-- trapping instruction
2c: 48 8b 14 24 mov (%rsp),%rdx
30: 75 11 jne 0x43
32: 8b 02 mov (%rdx),%eax
34: 49 39 c4 cmp %rax,%r12
37: 73 25 jae 0x5e
39: e8 06 2e 6f f7 call 0xf76f2e44
3e: e9 .byte 0xe9
3f: 39 .byte 0x39