vhci_hcd vhci_hcd.7: suspend vhci_hcd
vhci_hcd vhci_hcd.6: suspend vhci_hcd
vhci_hcd vhci_hcd.5: suspend vhci_hcd
vhci_hcd vhci_hcd.4: suspend vhci_hcd
vhci_hcd vhci_hcd.3: suspend vhci_hcd
vhci_hcd vhci_hcd.2: suspend vhci_hcd
vhci_hcd vhci_hcd.1: suspend vhci_hcd
vhci_hcd vhci_hcd.0: suspend vhci_hcd
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 6562 Comm: syz.9.57 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:set_link_state+0x27/0x1000 drivers/usb/gadget/udc/dummy_hcd.c:455
Code: 90 90 90 55 41 57 41 56 41 55 41 54 53 48 83 ec 38 49 89 fe 48 bb 00 00 00 00 00 fc ff df e8 d0 0d 98 fa 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 4b 81 01 fb 49 8b 16 4d 8d a6 a3 00
RSP: 0018:ffffc90004a3f920 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc900259a8000 RSI: 00000000000559e6 RDI: 00000000000559e7
RBP: 0000000000000003 R08: ffffffff8b464b20 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8e1c3000 R12: dffffc0000000000
R13: ffff8880294a8c40 R14: 0000000000000000 R15: ffff88802a261000
FS:  00007f7e0c7c66c0(0000) GS:ffff888125d3e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556a78c7d0 CR3: 000000003e35a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dummy_udc_pm drivers/usb/gadget/udc/dummy_hcd.c:1150 [inline]
 dummy_udc_suspend+0xd5/0x190 drivers/usb/gadget/udc/dummy_hcd.c:1160
 dpm_run_callback+0x84/0x2a0 drivers/base/power/main.c:510
 device_suspend+0x8c2/0x1050 drivers/base/power/main.c:2025
 dpm_suspend+0x6b8/0x980 drivers/base/power/main.c:2107
 dpm_suspend_start+0x4f/0x70 drivers/base/power/main.c:2344
 suspend_devices_and_enter+0x21c/0x10d0 kernel/power/suspend.c:523
 enter_state kernel/power/suspend.c:618 [inline]
 pm_suspend+0x52b/0x760 kernel/power/suspend.c:644
 state_store+0x206/0x290 kernel/power/main.c:819
 kernfs_fop_write_iter+0x3a5/0x540 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7e0e56e019
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7e0c7c6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7e0e7f5fa0 RCX: 00007f7e0e56e019
RDX: 0000000000000003 RSI: 0000200000000200 RDI: 0000000000000004
RBP: 00007f7e0e60500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7e0e7f6038 R14: 00007f7e0e7f5fa0 R15: 00007ffff1dce9c8
 </TASK>
Modules linked in:
------------[ cut here ]------------
console_irqwork_blocked
WARNING: kernel/printk/printk.c:4627 at __wake_up_klogd+0xf4/0x120 kernel/printk/printk.c:4627, CPU#1: syz.9.57/6562
Modules linked in:
CPU: 1 UID: 0 PID: 6562 Comm: syz.9.57 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__wake_up_klogd+0xf4/0x120 kernel/printk/printk.c:4627
Code: 76 ef ff 65 8b 1d 7c 52 f9 10 31 ff 89 de e8 33 10 21 00 85 db 74 18 e8 7a 0b 21 00 5b 5d e9 93 f2 a2 09 cc e8 6d 0b 21 00 90 <0f> 0b 90 eb ed e8 62 0b 21 00 e8 1d 41 8e ff eb e1 e8 56 0b 21 00
RSP: 0018:ffffc90004a3f788 EFLAGS: 00010083
RAX: ffffffff81a4cdd3 RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc900259a8000 RSI: 0000000000062219 RDI: 000000000006221a
RBP: ffffc90004a3f868 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f5f467 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000283 R15: ffffc90004a3f878
FS:  00007f7e0c7c66c0(0000) GS:ffff888125d3e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556a78c7d0 CR3: 000000003e35a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 oops_end+0x36/0x110 arch/x86/kernel/dumpstack.c:380
 __exc_general_protection arch/x86/kernel/traps.c:968 [inline]
 exc_general_protection+0x156/0x1f0 arch/x86/kernel/traps.c:914
 asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:589
RIP: 0010:set_link_state+0x27/0x1000 drivers/usb/gadget/udc/dummy_hcd.c:455
Code: 90 90 90 55 41 57 41 56 41 55 41 54 53 48 83 ec 38 49 89 fe 48 bb 00 00 00 00 00 fc ff df e8 d0 0d 98 fa 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 4b 81 01 fb 49 8b 16 4d 8d a6 a3 00
RSP: 0018:ffffc90004a3f920 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc900259a8000 RSI: 00000000000559e6 RDI: 00000000000559e7
RBP: 0000000000000003 R08: ffffffff8b464b20 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8e1c3000 R12: dffffc0000000000
R13: ffff8880294a8c40 R14: 0000000000000000 R15: ffff88802a261000
 dummy_udc_pm drivers/usb/gadget/udc/dummy_hcd.c:1150 [inline]
 dummy_udc_suspend+0xd5/0x190 drivers/usb/gadget/udc/dummy_hcd.c:1160
 dpm_run_callback+0x84/0x2a0 drivers/base/power/main.c:510
 device_suspend+0x8c2/0x1050 drivers/base/power/main.c:2025
 dpm_suspend+0x6b8/0x980 drivers/base/power/main.c:2107
 dpm_suspend_start+0x4f/0x70 drivers/base/power/main.c:2344
 suspend_devices_and_enter+0x21c/0x10d0 kernel/power/suspend.c:523
 enter_state kernel/power/suspend.c:618 [inline]
 pm_suspend+0x52b/0x760 kernel/power/suspend.c:644
 state_store+0x206/0x290 kernel/power/main.c:819
 kernfs_fop_write_iter+0x3a5/0x540 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7e0e56e019
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7e0c7c6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7e0e7f5fa0 RCX: 00007f7e0e56e019
RDX: 0000000000000003 RSI: 0000200000000200 RDI: 0000000000000004
RBP: 00007f7e0e60500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7e0e7f6038 R14: 00007f7e0e7f5fa0 R15: 00007ffff1dce9c8
 </TASK>
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	55                   	push   %rbp
   4:	41 57                	push   %r15
   6:	41 56                	push   %r14
   8:	41 55                	push   %r13
   a:	41 54                	push   %r12
   c:	53                   	push   %rbx
   d:	48 83 ec 38          	sub    $0x38,%rsp
  11:	49 89 fe             	mov    %rdi,%r14
  14:	48 bb 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbx
  1b:	fc ff df
  1e:	e8 d0 0d 98 fa       	call   0xfa980df3
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	4c 89 f7             	mov    %r14,%rdi
  33:	e8 4b 81 01 fb       	call   0xfb018183
  38:	49 8b 16             	mov    (%r14),%rdx
  3b:	4d                   	rex.WRB
  3c:	8d                   	.byte 0x8d
  3d:	a6                   	cmpsb  %es:(%rdi),%ds:(%rsi)
  3e:	a3                   	.byte 0xa3