------------[ cut here ]------------
WARNING: CPU: 0 PID: 4572 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 4572 Comm: syz.0.65 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 3d f7 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 c0 f3 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:ffffc900000079f8 EFLAGS: 00010246
RAX: ffffffff819ed760 RBX: 0000000000000008 RCX: ffff888026950000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004d2a001
R10: ffffed1004d2a001 R11: 1ffff11004d2a000 R12: ffff888026951788
R13: 00007ffffffff000 R14: ffffc90000007a68 R15: 0000000000000004
FS: 00007fcd71b506c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000004 CR3: 00000000578db000 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_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_df4102469b4ba413+0x38/0xce0
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_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
__bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
trace_kfree include/trace/events/kmem.h:118 [inline]
kfree+0x25f/0x2a0 mm/slub.c:4554
rcu_do_batch kernel/rcu/tree.c:2523 [inline]
rcu_core+0x962/0x15d0 kernel/rcu/tree.c:2763
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 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:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: f6 ff 0f 1f 00 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 3e 1d aa f7 48 89 df e8 06 f2 aa f7 e8 c1 8c cb f7 fb bf 01 00 00 00 46 15 9f f7 65 8b 05 27 13 50 76 85 c0 74 02 5b c3 e8 d4 1d 4e
RSP: 0018:ffffc900034ef008 EFLAGS: 00000286
RAX: fed75951ae92d500 RBX: ffffffff8cb9d040 RCX: fed75951ae92d500
RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: 0000000000000001
RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffffbfff1ff7827
R10: fffffbfff1ff7827 R11: 1ffffffff1ff7826 R12: ffff888023b36070
R13: ffff888147629c00 R14: ffff888147629c18 R15: 0000000000000000
spin_unlock_irq include/linux/spinlock.h:413 [inline]
rh_call_control drivers/usb/core/hcd.c:739 [inline]
rh_urb_enqueue drivers/usb/core/hcd.c:848 [inline]
usb_hcd_submit_urb+0x144b/0x19c0 drivers/usb/core/hcd.c:1555
usb_start_wait_urb+0x111/0x4b0 drivers/usb/core/message.c:58
usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
usb_control_msg+0x22f/0x3e0 drivers/usb/core/message.c:153
get_port_status drivers/usb/core/hub.c:596 [inline]
hub_ext_port_status+0x103/0x6d0 drivers/usb/core/hub.c:613
hub_port_status drivers/usb/core/hub.c:635 [inline]
hub_activate+0x6e9/0x1a30 drivers/usb/core/hub.c:1146
hub_resume+0xa1/0x3b0 drivers/usb/core/hub.c:3967
usb_resume_interface drivers/usb/core/driver.c:1358 [inline]
usb_resume_both+0x5c3/0xac0 drivers/usb/core/driver.c:1518
__rpm_callback+0x2eb/0x7e0 drivers/base/power/runtime.c:395
rpm_callback drivers/base/power/runtime.c:532 [inline]
rpm_resume+0x109a/0x1a50 drivers/base/power/runtime.c:907
__pm_runtime_resume+0x11a/0x170 drivers/base/power/runtime.c:1138
pm_runtime_get_sync include/linux/pm_runtime.h:411 [inline]
usb_autoresume_device+0x1f/0x60 drivers/usb/core/driver.c:1705
usbdev_open+0x1aa/0x790 drivers/usb/core/devio.c:1044
chrdev_open+0x597/0x670 fs/char_dev.c:414
do_dentry_open+0x7ff/0xf80 fs/open.c:826
do_open fs/namei.c:3608 [inline]
path_openat+0x2682/0x2f30 fs/namei.c:3742
do_filp_open+0x1b3/0x3e0 fs/namei.c:3769
do_sys_openat2+0x142/0x4a0 fs/open.c:1253
do_sys_open fs/open.c:1269 [inline]
__do_sys_openat fs/open.c:1285 [inline]
__se_sys_openat fs/open.c:1280 [inline]
__x64_sys_openat+0x135/0x160 fs/open.c:1280
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: 0033:0x7fcd738e7510
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 49 94 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 9c 94 02 00 8b 44
RSP: 002b:00007fcd71b4fb70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000008401 RCX: 00007fcd738e7510
RDX: 0000000000008401 RSI: 00007fcd71b4fc10 RDI: 00000000ffffff9c
RBP: 00007fcd71b4fc10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: cccccccccccccccd
R13: 00007fcd73b30038 R14: 00007fcd73b2ffa0 R15: 00007ffeed4dff48
----------------
Code disassembly (best guess):
0: f6 ff idiv %bh
2: 0f 1f 00 nopl (%rax)
5: 53 push %rbx
6: 48 89 fb mov %rdi,%rbx
9: 48 83 c7 18 add $0x18,%rdi
d: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
12: e8 3e 1d aa f7 call 0xf7aa1d55
17: 48 89 df mov %rbx,%rdi
1a: e8 06 f2 aa f7 call 0xf7aaf225
1f: e8 c1 8c cb f7 call 0xf7cb8ce5
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 46 15 9f f7 call 0xf79f1575 <-- trapping instruction
2f: 65 8b 05 27 13 50 76 mov %gs:0x76501327(%rip),%eax # 0x7650135d
36: 85 c0 test %eax,%eax
38: 74 02 je 0x3c
3a: 5b pop %rbx
3b: c3 ret
3c: e8 .byte 0xe8
3d: d4 (bad)
3e: 1d .byte 0x1d
3f: 4e rex.WRX