vhci_hcd vhci_hcd.0: pdev(3) 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 0xdffffc0000000125: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000928-0x000000000000092f] CPU: 0 PID: 9964 Comm: syz-executor.3 Not tainted 5.12.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0x87/0x5e60 kernel/locking/lockdep.c:4770 Code: 84 c0 48 89 7c 24 78 0f 85 10 26 00 00 83 3d 83 89 58 0c 00 0f 84 84 41 00 00 83 3d 02 82 01 0b 00 74 32 48 89 f8 48 c1 e8 03 <80> 3c 30 00 74 19 48 8b 7c 24 78 e8 b9 96 60 00 48 8b 7c 24 78 48 RSP: 0018:ffffc9000b95f9d0 EFLAGS: 00010002 RAX: 0000000000000125 RBX: ffff8880209a8000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000928 RBP: ffffc9000b95fb78 R08: 0000000000000001 R09: 0000000000000001 R10: fffffbfff1b6982e R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 FS: 00007fa3db18a700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000568000 CR3: 0000000026a91000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x126/0x650 kernel/locking/lockdep.c:5510 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x73/0xa0 kernel/locking/spinlock.c:159 try_to_wake_up+0x60/0xa90 kernel/sched/core.c:3345 attach_store+0x8e5/0xf80 drivers/usb/usbip/vhci_sysfs.c:422 kernfs_fop_write_iter+0x3b6/0x510 fs/kernfs/file.c:296 call_write_iter include/linux/fs.h:1977 [inline] new_sync_write fs/read_write.c:518 [inline] vfs_write+0x896/0xab0 fs/read_write.c:605 ksys_write+0x11b/0x220 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:00007fa3db189b90 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 000000000041913f RDX: 0000000000000008 RSI: 00007fa3db189be0 RDI: 0000000000000005 RBP: 0000000000000005 R08: 0000000000000000 R09: 00007fa3db189b30 R10: 0000000000000000 R11: 0000000000000293 R12: 00000000004afb38 R13: 00007fa3db189be0 R14: 0000000000000000 R15: 0000000000022000 Modules linked in: ---[ end trace 9c5d608f2fe12fe6 ]--- RIP: 0010:__lock_acquire+0x87/0x5e60 kernel/locking/lockdep.c:4770 Code: 84 c0 48 89 7c 24 78 0f 85 10 26 00 00 83 3d 83 89 58 0c 00 0f 84 84 41 00 00 83 3d 02 82 01 0b 00 74 32 48 89 f8 48 c1 e8 03 <80> 3c 30 00 74 19 48 8b 7c 24 78 e8 b9 96 60 00 48 8b 7c 24 78 48 RSP: