greybus greybus1: nonexistent connection (2048 bytes dropped)
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:gb_operation_message_init drivers/greybus/operation.c:340 [inline]
RIP: 0010:gb_operation_message_alloc+0x186/0x2c0 drivers/greybus/operation.c:385
Code: 00 e8 ce 22 99 fb 41 80 fd 7f 0f 84 b9 00 00 00 e8 af 28 99 fb 48 89 ea 41 83 c4 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 01 0f 8e b8 00 00 00 48 8d 7d 02 66 44
RSP: 0018:ffffc900001b89f0 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffff8881176bfec0 RCX: ffffc90001001000
RDX: 0000000000000002 RSI: ffffffff861ba741 RDI: ffff8881022e0000
RBP: 0000000000000010 R08: 0000000000000001 R09: 000000000000007f
R10: 0000000000000000 R11: ffffffff8100148a R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000800 R15: 0000000000000018
FS:  0000000000000000(0000) GS:ffff8882684eb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f84b5351000 CR3: 000000011cf40000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 gb_operation_create_common+0x9f/0x710 drivers/greybus/operation.c:532
 gb_operation_create_incoming drivers/greybus/operation.c:644 [inline]
 gb_connection_recv_request drivers/greybus/operation.c:926 [inline]
 gb_connection_recv+0x1dc/0x1050 drivers/greybus/operation.c:1063
 greybus_data_rcvd+0x244/0x600 drivers/greybus/connection.c:89
 cport_in_callback+0x1fb/0x280 drivers/greybus/es2.c:840
 __usb_hcd_giveback_urb+0x38e/0x610 drivers/usb/core/hcd.c:1657
 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741
 dummy_timer+0xdb2/0x3700 drivers/usb/gadget/udc/dummy_hcd.c:2019
 __run_hrtimer kernel/time/hrtimer.c:2067 [inline]
 __hrtimer_run_queues+0x462/0x9c0 kernel/time/hrtimer.c:2124
 hrtimer_run_softirq+0x1ca/0x360 kernel/time/hrtimer.c:2141
 handle_softirqs+0x1d9/0x9b0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x192/0x210 kernel/softirq.c:767
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:784
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x8f/0xb0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: 20 c4 01 e9 03 f9 02 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d e3 80 1f 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffc9000014fe10 EFLAGS: 00000242
RAX: 000000000015f87f RBX: ffff8881022e0000 RCX: ffffffff878708d5
RDX: 0000000000000001 RSI: ffffffff89326361 RDI: ffffffff87d29880
RBP: ffffed102045c000 R08: 0000000000000001 R09: ffffed103eae673d
R10: ffff8881f57339eb R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 1ffff92000029fc6 R15: dffffc0000000000
 arch_safe_halt arch/x86/include/asm/paravirt.h:62 [inline]
 default_idle+0x9/0x10 arch/x86/kernel/process.c:768
 default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x3ae/0x5b0 kernel/sched/idle.c:355
 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:454
 start_secondary+0x21d/0x2d0 arch/x86/kernel/smpboot.c:312
 common_startup_64+0x13e/0x158
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gb_operation_message_init drivers/greybus/operation.c:340 [inline]
RIP: 0010:gb_operation_message_alloc+0x186/0x2c0 drivers/greybus/operation.c:385
Code: 00 e8 ce 22 99 fb 41 80 fd 7f 0f 84 b9 00 00 00 e8 af 28 99 fb 48 89 ea 41 83 c4 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 01 0f 8e b8 00 00 00 48 8d 7d 02 66 44
RSP: 0018:ffffc900001b89f0 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffff8881176bfec0 RCX: ffffc90001001000
RDX: 0000000000000002 RSI: ffffffff861ba741 RDI: ffff8881022e0000
RBP: 0000000000000010 R08: 0000000000000001 R09: 000000000000007f
R10: 0000000000000000 R11: ffffffff8100148a R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000800 R15: 0000000000000018
FS:  0000000000000000(0000) GS:ffff8882684eb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f84b5351000 CR3: 000000011cf40000 CR4: 00000000003506f0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	e8 ce 22 99 fb       	call   0xfb9922d3
   5:	41 80 fd 7f          	cmp    $0x7f,%r13b
   9:	0f 84 b9 00 00 00    	je     0xc8
   f:	e8 af 28 99 fb       	call   0xfb9928c3
  14:	48 89 ea             	mov    %rbp,%rdx
  17:	41 83 c4 08          	add    $0x8,%r12d
  1b:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  22:	fc ff df
  25:	48 c1 ea 03          	shr    $0x3,%rdx
* 29:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2d:	84 c0                	test   %al,%al
  2f:	74 08                	je     0x39
  31:	3c 01                	cmp    $0x1,%al
  33:	0f 8e b8 00 00 00    	jle    0xf1
  39:	48 8d 7d 02          	lea    0x2(%rbp),%rdi
  3d:	66                   	data16
  3e:	44                   	rex.R