Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 UID: 0 PID: 8811 Comm: syz.2.337 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:ar_context_release+0x3f/0x380 drivers/firewire/ohci.c:543
Code: ff df e8 64 ef fb fa 48 89 d8 48 c1 e8 03 80 3c 28 00 74 08 48 89 df e8 df 62 65 fb 4c 8b 33 49 83 c6 08 4c 89 f0 48 c1 e8 03 <80> 3c 28 00 74 08 4c 89 f7 e8 c3 62 65 fb 4d 8b 3e 4c 8d 63 48 4d
RSP: 0000:ffffc900039afa30 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff888040074af8 RCX: 0000000000080000
RDX: ffffc90012c3f000 RSI: 000000000000cdd1 RDI: 000000000000cdd2
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff812da2a0 R12: ffff888040074000
R13: dffffc0000000000 R14: 0000000000000008 R15: ffffc900039afac0
FS:  00007fbafd6c56c0(0000) GS:ffff888125c3e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556b99b7d0 CR3: 000000003fa5c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 release_ohci+0x3f/0x60 drivers/firewire/ohci.c:3567
 release_nodes drivers/base/devres.c:546 [inline]
 devres_release_all+0x19e/0x250 drivers/base/devres.c:576
 device_unbind_cleanup drivers/base/dd.c:597 [inline]
 really_probe+0x451/0xae0 drivers/base/dd.c:772
 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868
 device_driver_attach+0xe0/0x1d0 drivers/base/dd.c:1203
 bind_store+0x1d3/0x220 drivers/base/bus.c:267
 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: 0033:0x7fbaff48e019
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:00007fbafd6c5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fbaff716090 RCX: 00007fbaff48e019
RDX: 000000000000000d RSI: 0000200000000180 RDI: 0000000000000005
RBP: 00007fbaff52500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbaff716128 R14: 00007fbaff716090 R15: 00007ffd9e907748
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ar_context_release+0x3f/0x380 drivers/firewire/ohci.c:543
Code: ff df e8 64 ef fb fa 48 89 d8 48 c1 e8 03 80 3c 28 00 74 08 48 89 df e8 df 62 65 fb 4c 8b 33 49 83 c6 08 4c 89 f0 48 c1 e8 03 <80> 3c 28 00 74 08 4c 89 f7 e8 c3 62 65 fb 4d 8b 3e 4c 8d 63 48 4d
RSP: 0000:ffffc900039afa30 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff888040074af8 RCX: 0000000000080000
RDX: ffffc90012c3f000 RSI: 000000000000cdd1 RDI: 000000000000cdd2
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff812da2a0 R12: ffff888040074000
R13: dffffc0000000000 R14: 0000000000000008 R15: ffffc900039afac0
FS:  00007fbafd6c56c0(0000) GS:ffff888125c3e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556b99b7d0 CR3: 000000003fa5c000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	ff                   	lcall  (bad)
   1:	df e8                	fucomip %st(0),%st
   3:	64 ef                	fs out %eax,(%dx)
   5:	fb                   	sti
   6:	fa                   	cli
   7:	48 89 d8             	mov    %rbx,%rax
   a:	48 c1 e8 03          	shr    $0x3,%rax
   e:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
  12:	74 08                	je     0x1c
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 df 62 65 fb       	call   0xfb6562fb
  1c:	4c 8b 33             	mov    (%rbx),%r14
  1f:	49 83 c6 08          	add    $0x8,%r14
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	4c 89 f7             	mov    %r14,%rdi
  33:	e8 c3 62 65 fb       	call   0xfb6562fb
  38:	4d 8b 3e             	mov    (%r14),%r15
  3b:	4c 8d 63 48          	lea    0x48(%rbx),%r12
  3f:	4d                   	rex.WRB