Oops: general protection fault, probably for non-canonical address 0xdffffc0000000032: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000190-0x0000000000000197]
CPU: 1 UID: 0 PID: 5874 Comm: kworker/u8:63 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: async async_run_entry_fn
RIP: 0010:azx_freeze_noirq+0x49/0x1b0 sound/hda/controllers/intel.c:1093
Code: 8d 73 78 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 b8 83 19 f9 4d 8b 36 49 8d be 90 01 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 9b 83 19 f9 4d 85 f6 0f 84 ca 00 00 00 4d
RSP: 0018:ffffc900066ffa00 EFLAGS: 00010202
RAX: 0000000000000032 RBX: ffff88801af9c0d0 RCX: ffff888031693e80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000190
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff891876a0 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8c6fd3c0
FS:  0000000000000000(0000) GS:ffff888125af2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd848c82f8 CR3: 000000005dca6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 pci_pm_freeze_noirq+0x10e/0x4d0 drivers/pci/pci-driver.c:1112
 dpm_run_callback+0x84/0x2a0 drivers/base/power/main.c:510
 device_suspend_noirq+0x574/0xba0 drivers/base/power/main.c:1534
 async_suspend_noirq+0x20/0x30 drivers/base/power/main.c:1572
 async_run_entry_fn+0x9d/0x430 kernel/async.c:129
 process_one_work+0xaaf/0x1480 kernel/workqueue.c:3379
 process_scheduled_works kernel/workqueue.c:3462 [inline]
 worker_thread+0xb05/0x10d0 kernel/workqueue.c:3543
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
------------[ cut here ]------------
console_irqwork_blocked
WARNING: kernel/printk/printk.c:4634 at __wake_up_klogd+0xf4/0x120 kernel/printk/printk.c:4634, CPU#1: kworker/u8:63/5874
Modules linked in:
CPU: 1 UID: 0 PID: 5874 Comm: kworker/u8:63 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: async async_run_entry_fn
RIP: 0010:__wake_up_klogd+0xf4/0x120 kernel/printk/printk.c:4634
Code: 92 ef ff 65 8b 1d 6c 7b 1e 11 31 ff 89 de e8 93 43 21 00 85 db 74 18 e8 da 3e 21 00 5b 5d e9 c3 8b af 09 cc e8 cd 3e 21 00 90 <0f> 0b 90 eb ed e8 c2 3e 21 00 e8 7d c0 8e ff eb e1 e8 b6 3e 21 00
RSP: 0018:ffffc900066ff868 EFLAGS: 00010093
RAX: ffffffff81a464e3 RBX: 0000000000000001 RCX: ffff888031693e80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900066ff948 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1fa1890 R12: dffffc0000000032
R13: 0000000000000001 R14: 0000000000000293 R15: ffffc900066ff958
FS:  0000000000000000(0000) GS:ffff888125af2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd848c82f8 CR3: 000000005dca6000 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:azx_freeze_noirq+0x49/0x1b0 sound/hda/controllers/intel.c:1093
Code: 8d 73 78 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 b8 83 19 f9 4d 8b 36 49 8d be 90 01 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 9b 83 19 f9 4d 85 f6 0f 84 ca 00 00 00 4d
RSP: 0018:ffffc900066ffa00 EFLAGS: 00010202
RAX: 0000000000000032 RBX: ffff88801af9c0d0 RCX: ffff888031693e80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000190
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff891876a0 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8c6fd3c0
 pci_pm_freeze_noirq+0x10e/0x4d0 drivers/pci/pci-driver.c:1112
 dpm_run_callback+0x84/0x2a0 drivers/base/power/main.c:510
 device_suspend_noirq+0x574/0xba0 drivers/base/power/main.c:1534
 async_suspend_noirq+0x20/0x30 drivers/base/power/main.c:1572
 async_run_entry_fn+0x9d/0x430 kernel/async.c:129
 process_one_work+0xaaf/0x1480 kernel/workqueue.c:3379
 process_scheduled_works kernel/workqueue.c:3462 [inline]
 worker_thread+0xb05/0x10d0 kernel/workqueue.c:3543
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	8d 73 78             	lea    0x78(%rbx),%esi
   3:	4c 89 f0             	mov    %r14,%rax
   6:	48 c1 e8 03          	shr    $0x3,%rax
   a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
   f:	74 08                	je     0x19
  11:	4c 89 f7             	mov    %r14,%rdi
  14:	e8 b8 83 19 f9       	call   0xf91983d1
  19:	4d 8b 36             	mov    (%r14),%r14
  1c:	49 8d be 90 01 00 00 	lea    0x190(%r14),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 9b 83 19 f9       	call   0xf91983d1
  36:	4d 85 f6             	test   %r14,%r14
  39:	0f 84 ca 00 00 00    	je     0x109
  3f:	4d                   	rex.WRB