greybus greybus1: 0/0:0: error sending response 0x01: -71
greybus greybus1: 0/0:0: error sending response 0x01: -71
greybus greybus1: 0/0:0: incomplete message 0xc2ad of type 0xfd received (2048 < 4870)
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 UID: 0 PID: 2869 Comm: udevd Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
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 0e 82 97 fb 41 80 fd 7f 0f 84 b9 00 00 00 e8 ef 87 97 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: 0000:ffffc900018d7938 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffff88810ff6aac0 RCX: ffffc90001021000
RDX: 0000000000000002 RSI: ffffffff861da661 RDI: ffff888114f89e40
RBP: 0000000000000010 R08: 0000000000000001 R09: 000000000000007f
R10: 0000000000000000 R11: ffffffff8100148a R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000800 R15: 0000000000000018
FS:  00007f3ff7e4a880(0000) GS:ffff8882683d5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001038 CR3: 000000011769c000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 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+0xdb5/0x3840 drivers/usb/gadget/udc/dummy_hcd.c:2051
 __run_hrtimer kernel/time/hrtimer.c:2074 [inline]
 __hrtimer_run_queues+0x462/0x9c0 kernel/time/hrtimer.c:2131
 hrtimer_run_softirq+0x1ca/0x360 kernel/time/hrtimer.c:2148
 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+0x168/0x210 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x42/0xb0 arch/x86/kernel/apic/apic.c:1062
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0033:0x7f3ff7edbd50
Code: 48 c1 c8 11 64 48 33 04 25 30 00 00 00 ff e0 48 8d 3d e4 ab 16 00 e8 ff 5e 05 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <48> 8b 05 81 60 1a 00 64 48 03 04 25 00 00 00 00 c3 66 2e 0f 1f 84
RSP: 002b:00007fff5adc9808 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007fff5adc9840 RCX: 0000561fc599e3aa
RDX: 0000561aa40e9010 RSI: 0000000000000006 RDI: 0000561aa433afa0
RBP: 0000561aa43a9e20 R08: 00000000000001e0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000561aa40ebd80 R14: 0000561aa40ec7b0 R15: 0000000000000000
 </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 0e 82 97 fb 41 80 fd 7f 0f 84 b9 00 00 00 e8 ef 87 97 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: 0000:ffffc900018d7938 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffff88810ff6aac0 RCX: ffffc90001021000
RDX: 0000000000000002 RSI: ffffffff861da661 RDI: ffff888114f89e40
RBP: 0000000000000010 R08: 0000000000000001 R09: 000000000000007f
R10: 0000000000000000 R11: ffffffff8100148a R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000800 R15: 0000000000000018
FS:  00007f3ff7e4a880(0000) GS:ffff8882683d5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001038 CR3: 000000011769c000 CR4: 00000000003506f0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	e8 0e 82 97 fb       	call   0xfb978213
   5:	41 80 fd 7f          	cmp    $0x7f,%r13b
   9:	0f 84 b9 00 00 00    	je     0xc8
   f:	e8 ef 87 97 fb       	call   0xfb978803
  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