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WARNING: CPU: 1 PID: 12166 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x31e/0x3b0 drivers/gpu/drm/vkms/vkms_crtc.c:21
Modules linked in:
CPU: 1 PID: 12166 Comm: syz-executor376 Not tainted 5.12.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:vkms_vblank_simulate+0x31e/0x3b0 drivers/gpu/drm/vkms/vkms_crtc.c:21
Code: 85 9e 00 00 00 48 8b 95 b8 01 00 00 4c 89 e1 bf 02 00 00 00 48 c7 c6 20 c5 d8 89 e8 8c 09 f0 ff e9 e5 fe ff ff e8 f2 16 27 fd <0f> 0b e9 88 fd ff ff e8 06 c1 6a fd e9 11 fe ff ff 4c 89 ef e8 f9
RSP: 0018:ffffc90000dc0df0 EFLAGS: 00010046
RAX: 0000000000010001 RBX: ffff888143295e58 RCX: 0000000000000000
RDX: ffff8880113e3880 RSI: ffffffff844cda5e RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff844cd7e3 R11: 0000000000000000 R12: ffff888143294d30
R13: 0000000000fe4c00 R14: ffff8880b9d26340 R15: ffffffff844cd740
FS:  00000000007c13c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000049c584 CR3: 0000000020663000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1601
 hrtimer_interrupt+0x330/0xa00 kernel/time/hrtimer.c:1663
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:191
Code: 74 24 10 e8 ca 74 54 f8 48 89 ef e8 f2 2a 55 f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> e3 f8 48 f8 65 8b 05 ac c3 fc 76 85 c0 74 0a 5b 5d c3 e8 50 b4
RSP: 0018:ffffc9000c747b18 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1f5c632
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff88801c297058 R08: 0000000000000001 R09: ffffffff8fa9796f
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88801cc81c40
R13: ffff88801c297058 R14: ffff88801c558478 R15: ffff88801c558408
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 attach_store.cold+0x26a/0x355 drivers/usb/usbip/vhci_sysfs.c:418
 dev_attr_store+0x50/0x80 drivers/base/core.c:1989
 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:1977 [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: 0033:0x402823
Code: ff bf 01 00 00 00 e8 bc 6f 00 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18
RSP: 002b:00007fff7c1c4578 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000000402823
RDX: 0000000000000008 RSI: 00007fff7c1c45a0 RDI: 0000000000000008
RBP: 0000000000000008 R08: 0000000000000000 R09: 00007fff7c1c44f0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff7c1c45a0
R13: 0000000000000000 R14: 00007fff7c1c4b2c R15: 00007fff7c1c4b30