vhci_hcd vhci_hcd.0: pdev(1) rhport(1) sockfd(3)
vhci_hcd vhci_hcd.0: devid(0) speed(1) speed_str(low-speed)
general protection fault, probably for non-canonical address 0xdffffc0000000126: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000930-0x0000000000000937]
CPU: 1 PID: 10815 Comm: syz-executor.1 Not tainted 5.12.0-rc4-next-20210326-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0xcf0/0x5230 kernel/locking/lockdep.c:4772
Code: 0e 0e 41 bf 01 00 00 00 0f 86 8c 00 00 00 89 05 36 5f 0e 0e e9 81 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 82 2f 00 00 49 81 3e c0 03 3d 8f 0f 84 da f3 ff
RSP: 0018:ffffc9000c387820 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000126 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1b8e9a9 R11: 0000000000000001 R12: ffff88802ccb3900
R13: 0000000000000000 R14: 0000000000000930 R15: 0000000000000000
FS:  00007fb554e5d700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f248e5c6000 CR3: 000000003fd13000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire kernel/locking/lockdep.c:5512 [inline]
 lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5477
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159
 try_to_wake_up+0x98/0x14a0 kernel/sched/core.c:3354
 attach_store.cold+0x2b4/0x355 drivers/usb/usbip/vhci_sysfs.c:422
 dev_attr_store+0x50/0x80 drivers/base/core.c:2024
 sysfs_kf_write+0x110/0x160 fs/sysfs/file.c:139
 kernfs_fop_write_iter+0x342/0x500 fs/kernfs/file.c:296
 call_write_iter include/linux/fs.h:2106 [inline]
 new_sync_write+0x426/0x650 fs/read_write.c:518
 vfs_write+0x796/0xa30 fs/read_write.c:605
 ksys_write+0x12d/0x250 fs/read_write.c:658
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x41913f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48
RSP: 002b:00007fb554e5cb90 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 000000000041913f
RDX: 0000000000000008 RSI: 00007fb554e5cbe0 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: 00007fb554e5cb30
R10: 0000000000000000 R11: 0000000000000293 R12: 00000000004afb38
R13: 00007fb554e5cbe0 R14: 0000000000000000 R15: 0000000000022000
Modules linked in:
---[ end trace 9676c1f6d336bb02 ]---
RIP: 0010:__lock_acquire+0xcf0/0x5230 kernel/locking/lockdep.c:4772
Code: 0e 0e 41 bf 01 00 00 00 0f 86 8c 00 00 00 89 05 36 5f 0e 0e e9 81 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 82 2f 00 00 49 81 3e c0 03 3d 8f 0f 84 da f3 ff
RSP: 0018:ffffc9000c387820 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000126 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1b8e9a9 R11: 0000000000000001 R12: ffff88802ccb3900
R13: 0000000000000000 R14: 0000000000000930 R15: 0000000000000000
FS:  00007fb554e5d700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f248e5c6000 CR3: 000000003fd13000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400