------------[ cut here ]------------
WARNING: CPU: 0 PID: 6237 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 6237 Comm: syz.0.529 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 5d 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 e0 90 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:ffffc90000007e30 EFLAGS: 00010006
RAX: ffffffff81a09160 RBX: 0000000000000008 RCX: ffff8880299a9dc0
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880299a9dc7 R09: 1ffff110053353b8
R10: dffffc0000000000 R11: ffffed10053353b9 R12: ffff8880299ab548
R13: 00007ffffffff000 R14: ffffc90000007ea8 R15: 0000000000000000
FS: 00007fa39c66a6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7a91678dac CR3: 0000000025583000 CR4: 00000000003506f0
DR0: 0000000000000000 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_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_bc47904a6221c669+0x5b/0x230
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_test_run_raw_tp+0x1cd/0x3f0 net/bpf/test_run.c:335
flush_smp_call_function_queue+0x2a9/0x760 kernel/smp.c:628
__sysvec_call_function_single+0x98/0x240 arch/x86/kernel/smp.c:248
instr_sysvec_call_function_single arch/x86/kernel/smp.c:243 [inline]
sysvec_call_function_single+0x98/0xc0 arch/x86/kernel/smp.c:243
asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:684
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x84/0x290 mm/kasan/generic.c:189
Code: 49 c1 e9 03 4b 8d 1c 21 49 89 df 4d 29 df 49 83 ff 10 7f 29 4d 85 ff 0f 84 38 01 00 00 4c 89 cb 48 f7 d3 4c 01 f3 41 80 3b 00 <0f> 85 86 01 00 00 49 ff c3 48 ff c3 75 ee e9 18 01 00 00 44 89 dd
RSP: 0018:ffffc9000333edc8 EFLAGS: 00000246
RAX: 1ffff11005335601 RBX: ffffffffffffffff RCX: ffffffff81ced278
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff963436f8
RBP: 000000001b166b39 R08: ffffffff963436ff R09: 1ffffffff2c686df
R10: dffffc0000000000 R11: fffffbfff2c686df R12: dffffc0000000001
R13: ffff888025ffeeb0 R14: 1ffffffff2c686df R15: 0000000000000001
instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
test_and_set_bit_lock include/asm-generic/bitops/instrumented-lock.h:55 [inline]
bit_spin_lock include/linux/bit_spinlock.h:27 [inline]
hlist_bl_lock include/linux/list_bl.h:148 [inline]
d_alloc_parallel+0x3f8/0x1330 fs/dcache.c:2620
__lookup_slow+0x134/0x410 fs/namei.c:1656
lookup_one_len+0x19d/0x2d0 fs/namei.c:2726
start_creating+0x184/0x310 fs/debugfs/inode.c:354
__debugfs_create_file+0x6f/0x510 fs/debugfs/inode.c:399
debugfs_hw_add+0x10d/0x420 net/mac80211/debugfs.c:660
ieee80211_register_hw+0x2ac6/0x3af0 net/mac80211/main.c:1312
mac80211_hwsim_new_radio+0x20d3/0x4080 drivers/net/wireless/mac80211_hwsim.c:3374
hwsim_new_radio_nl+0xa6f/0xc40 drivers/net/wireless/mac80211_hwsim.c:3950
genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline]
genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
genl_rcv_msg+0xcea/0xf90 net/netlink/genetlink.c:792
netlink_rcv_skb+0x1f5/0x440 net/netlink/af_netlink.c:2507
genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x774/0x920 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8ba/0xbe0 net/netlink/af_netlink.c:1918
sock_sendmsg_nosec net/socket.c:706 [inline]
__sock_sendmsg net/socket.c:718 [inline]
____sys_sendmsg+0x5b7/0x8f0 net/socket.c:2445
___sys_sendmsg+0x236/0x2e0 net/socket.c:2499
__sys_sendmsg net/socket.c:2528 [inline]
__do_sys_sendmsg net/socket.c:2537 [inline]
__se_sys_sendmsg+0x1af/0x290 net/socket.c:2535
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: 0033:0x7fa39e410629
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa39c66a028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa39e689fa0 RCX: 00007fa39e410629
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000006
RBP: 00007fa39e4a6b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa39e68a038 R14: 00007fa39e689fa0 R15: 00007ffef02bbde8
----------------
Code disassembly (best guess):
0: 49 c1 e9 03 shr $0x3,%r9
4: 4b 8d 1c 21 lea (%r9,%r12,1),%rbx
8: 49 89 df mov %rbx,%r15
b: 4d 29 df sub %r11,%r15
e: 49 83 ff 10 cmp $0x10,%r15
12: 7f 29 jg 0x3d
14: 4d 85 ff test %r15,%r15
17: 0f 84 38 01 00 00 je 0x155
1d: 4c 89 cb mov %r9,%rbx
20: 48 f7 d3 not %rbx
23: 4c 01 f3 add %r14,%rbx
26: 41 80 3b 00 cmpb $0x0,(%r11)
* 2a: 0f 85 86 01 00 00 jne 0x1b6 <-- trapping instruction
30: 49 ff c3 inc %r11
33: 48 ff c3 inc %rbx
36: 75 ee jne 0x26
38: e9 18 01 00 00 jmp 0x155
3d: 44 89 dd mov %r11d,%ebp