------------[ cut here ]------------
refcount_read(&tsk->usage)
WARNING: kernel/fork.c:779 at __put_task_struct+0x33c/0x400 kernel/fork.c:779, CPU#0: syz.0.2651/17487
Modules linked in:
CPU: 0 UID: 0 PID: 17487 Comm: syz.0.2651 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__put_task_struct+0x33c/0x400 kernel/fork.c:779
Code: 4c 89 e6 e8 c6 bd 98 00 e9 f2 fe ff ff e8 2c 97 3d 00 be 03 00 00 00 4c 89 e7 e8 cf 48 58 01 e9 db fe ff ff e8 15 97 3d 00 90 <0f> 0b 90 e8 0c 97 3d 00 65 48 3b 1d fc d1 80 0b 0f 85 64 fd ff ff
RSP: 0018:ffffc90000007e18 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888112ce3b00 RCX: ffffffff81744b6b
RDX: ffff888114cdbb00 RSI: ffffffff81744e0b RDI: ffff888114cdbb00
RBP: 00000000c0000000 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000c0000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888114cdbb00 R14: ffffffff8198788d R15: 0000000000000003
FS:  00007f215228f6c0(0000) GS:ffff8882686ce000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1b98f23008 CR3: 000000013da00000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 rcu_do_batch kernel/rcu/tree.c:2617 [inline]
 rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
 handle_softirqs+0x1de/0x9d0 kernel/softirq.c:622
 do_softirq kernel/softirq.c:523 [inline]
 do_softirq+0xac/0xe0 kernel/softirq.c:510
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:450
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 __alloc_skb+0x5e4/0x710 net/core/skbuff.c:697
 alloc_skb include/linux/skbuff.h:1383 [inline]
 alloc_uevent_skb+0x7d/0x210 lib/kobject_uevent.c:289
 uevent_net_broadcast_untagged lib/kobject_uevent.c:326 [inline]
 kobject_uevent_net_broadcast lib/kobject_uevent.c:410 [inline]
 kobject_uevent_env+0xd2d/0x18b0 lib/kobject_uevent.c:608
 driver_register+0x29c/0x360 drivers/base/driver.c:257
 usb_gadget_register_driver_owner+0x132/0x210 drivers/usb/gadget/udc/core.c:1719
 raw_ioctl_run drivers/usb/gadget/legacy/raw_gadget.c:596 [inline]
 raw_ioctl+0x1a85/0x2b80 drivers/usb/gadget/legacy/raw_gadget.c:1307
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0x7b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f215383c42b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f215228cf00 EFLAGS: 00000246
 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f215383c42b
RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000005
RBP: 00007f215228dfd0 R08: 0000000000000001 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000200000000080 R14: 0000000000000003 R15: 00000000000010d0
 </TASK>