firmware_class: fw_set_page_data: fw-emi26/loader.fw fw_priv=ffff88807bfa6c00 data=0000000000000000 size=0
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 5805 Comm: kworker/1:9 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:ihex_validate_fw include/linux/ihex.h:56 [inline]
RIP: 0010:request_ihex_firmware.constprop.0+0x11e/0x250 include/linux/ihex.h:74
Code: 48 89 04 24 e8 c3 2f bb 00 4c 39 24 24 0f 82 94 00 00 00 e8 b4 2f bb 00 49 8d 7c 24 04 48 89 f8 48 89 fe 48 c1 e8 03 83 e6 07 <42> 8a 0c 38 49 8d 44 24 05 48 89 c2 48 c1 ea 03 40 38 f1 40 0f 9e
RSP: 0018:ffffc900043eee20 EFLAGS: 00010202
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffc9001a142000
RDX: 0000000000100000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc900043ee8c7 R11: 0000000000000001 R12: 0000000000000000
R13: ffff8880289208c0 R14: ffffc900043eef40 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888122575000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33a13ff8 CR3: 0000000074888000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 emi26_load_firmware drivers/usb/misc/emi26.c:86 [inline]
 emi26_probe+0x13c/0xe30 drivers/usb/misc/emi26.c:232
 usb_probe_interface+0x386/0x980 drivers/usb/core/driver.c:399
 call_driver_probe drivers/base/dd.c:629 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:707
 __driver_probe_device+0x210/0x460 drivers/base/dd.c:869
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:899
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1027
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4c0 drivers/base/dd.c:1131
 device_initial_probe+0xaf/0xf0 drivers/base/dd.c:1190
 __bus_probe_device+0x60/0x160 drivers/base/bus.c:614
 device_add+0x121d/0x1970 drivers/base/core.c:3778
 usb_set_configuration+0xd97/0x1dc0 drivers/usb/core/message.c:2280
 usb_generic_driver_probe+0xa1/0xe0 drivers/usb/core/generic.c:250
 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:629 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:707
 __driver_probe_device+0x210/0x460 drivers/base/dd.c:869
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:899
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1027
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4c0 drivers/base/dd.c:1131
 device_initial_probe+0xaf/0xf0 drivers/base/dd.c:1190
 __bus_probe_device+0x60/0x160 drivers/base/bus.c:614
 device_add+0x121d/0x1970 drivers/base/core.c:3778
 usb_new_device.part.0+0xcc2/0x1686 drivers/usb/core/hub.c:2713
 usb_new_device include/linux/workqueue.h:715 [inline]
 hub_port_connect drivers/usb/core/hub.c:5585 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5725 [inline]
 port_event drivers/usb/core/hub.c:5889 [inline]
 hub_event.cold+0x1e3/0xe90 drivers/usb/core/hub.c:5971
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3495
 process_scheduled_works kernel/workqueue.c:3578 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3659
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	48 89 04 24          	mov    %rax,(%rsp)
   4:	e8 c3 2f bb 00       	call   0xbb2fcc
   9:	4c 39 24 24          	cmp    %r12,(%rsp)
   d:	0f 82 94 00 00 00    	jb     0xa7
  13:	e8 b4 2f bb 00       	call   0xbb2fcc
  18:	49 8d 7c 24 04       	lea    0x4(%r12),%rdi
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	48 89 fe             	mov    %rdi,%rsi
  23:	48 c1 e8 03          	shr    $0x3,%rax
  27:	83 e6 07             	and    $0x7,%esi
* 2a:	42 8a 0c 38          	mov    (%rax,%r15,1),%cl <-- trapping instruction
  2e:	49 8d 44 24 05       	lea    0x5(%r12),%rax
  33:	48 89 c2             	mov    %rax,%rdx
  36:	48 c1 ea 03          	shr    $0x3,%rdx
  3a:	40 38 f1             	cmp    %sil,%cl
  3d:	40                   	rex
  3e:	0f                   	.byte 0xf
  3f:	9e                   	sahf