greybus greybus1: 0/0:0: incomplete message 0x9ab4 of type 0x29 received (22 < 4881)
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: 10324 Comm: syz.1.1293 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
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+0x174/0x280 drivers/greybus/operation.c:385
Code: 00 e8 f0 37 90 f8 48 8b 3d b9 47 a2 12 48 89 de e8 f1 95 f5 f8 e9 94 00 00 00 e8 d7 37 90 f8 41 83 c7 08 4c 89 f0 48 c1 e8 03 <0f> b6 04 28 84 c0 0f 85 91 00 00 00 66 45 89 3e 49 8d 7e 02 48 89
RSP: 0000:ffffc90000a188a8 EFLAGS: 00010002
RAX: 0000000000000002 RBX: ffff8880357dbec0 RCX: 0000000000040000
RDX: ffffc90002282000 RSI: 00000000000000ac RDI: 00000000000000ad
RBP: dffffc0000000000 R08: 0000000000000100 R09: 0000000000000000
R10: ffff8880357dbec0 R11: fffffbfff20b430f R12: 0000000000000000
R13: 0000000000000800 R14: 0000000000000010 R15: 0000000000000000
FS:  00007fc480c7c6c0(0000) GS:ffff888123bbf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc8a85556c8 CR3: 000000007400c000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 gb_operation_create_common+0xa9/0x650 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+0x284/0x1280 drivers/greybus/operation.c:1063
 greybus_data_rcvd+0x22c/0x550 drivers/greybus/connection.c:89
 cport_in_callback+0x1bd/0x3b0 drivers/greybus/es2.c:840
 __usb_hcd_giveback_urb+0x378/0x540 drivers/usb/core/hcd.c:1657
 dummy_timer+0xa91/0x4cc0 drivers/usb/gadget/udc/dummy_hcd.c:2023
 __run_hrtimer kernel/time/hrtimer.c:2074 [inline]
 __hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:2131
 hrtimer_run_softirq+0x1e3/0x2e0 kernel/time/hrtimer.c:2148
 handle_softirqs+0x226/0x860 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0xcb/0x220 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+0xa6/0xc0 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:page_ext_next include/linux/page_ext.h:108 [inline]
RIP: 0010:page_ext_iter_next include/linux/page_ext.h:163 [inline]
RIP: 0010:__update_page_owner_free_handle+0x2c6/0x4a0 mm/page_owner.c:302
Code: 4c 89 fe 48 81 e6 ff 7f 00 00 31 ff e8 c3 0c 85 ff 4c 89 f8 48 25 ff 7f 00 00 74 32 e8 f3 06 85 ff 48 8b 44 24 20 80 3c 18 00 <74> 0c 48 c7 c7 e0 bd a6 9b e8 1c e7 f5 ff 4c 8b 7c 24 38 4c 03 3d
RSP: 0000:ffffc90004487440 EFLAGS: 00000246
RAX: 1ffffffff374d7bc RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc90003f79000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffff888020405fe4 R08: ffff888020405fa7 R09: 1ffff11004080bf4
R10: dffffc0000000000 R11: ffffed1004080bf5 R12: ffff8880330e44c4
R13: 0000000000002854 R14: 0000000000000013 R15: 0000000000080133
 __reset_page_owner+0x85/0x1f0 mm/page_owner.c:339
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1418 [inline]
 free_unref_folios+0xdc2/0x14e0 mm/page_alloc.c:3022
 folios_put_refs+0x9e9/0xb30 mm/folio.c:1036
 folio_batch_release include/linux/folio_batch.h:101 [inline]
 truncate_inode_pages_range+0x3ca/0xd80 mm/truncate.c:408
 kill_bdev block/bdev.c:90 [inline]
 blkdev_flush_mapping+0x109/0x2f0 block/bdev.c:757
 blkdev_put_whole block/bdev.c:764 [inline]
 bdev_release+0x443/0x690 block/bdev.c:1189
 blkdev_release+0x15/0x20 block/fops.c:687
 __fput+0x40d/0xa50 fs/file_table.c:512
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 get_signal+0x1181/0x12c0 kernel/signal.c:2884
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc47fd9e559
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:00007fc480c7c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: 0000000000a20000 RBX: 00007fc480025fa0 RCX: 00007fc47fd9e559
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007fc47fe358b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc480026038 R14: 00007fc480025fa0 R15: 00007fc48014fa48
 </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+0x174/0x280 drivers/greybus/operation.c:385
Code: 00 e8 f0 37 90 f8 48 8b 3d b9 47 a2 12 48 89 de e8 f1 95 f5 f8 e9 94 00 00 00 e8 d7 37 90 f8 41 83 c7 08 4c 89 f0 48 c1 e8 03 <0f> b6 04 28 84 c0 0f 85 91 00 00 00 66 45 89 3e 49 8d 7e 02 48 89
RSP: 0000:ffffc90000a188a8 EFLAGS: 00010002
RAX: 0000000000000002 RBX: ffff8880357dbec0 RCX: 0000000000040000
RDX: ffffc90002282000 RSI: 00000000000000ac RDI: 00000000000000ad
RBP: dffffc0000000000 R08: 0000000000000100 R09: 0000000000000000
R10: ffff8880357dbec0 R11: fffffbfff20b430f R12: 0000000000000000
R13: 0000000000000800 R14: 0000000000000010 R15: 0000000000000000
FS:  00007fc480c7c6c0(0000) GS:ffff888123bbf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc8a85556c8 CR3: 000000007400c000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	00 e8                	add    %ch,%al
   2:	f0 37                	lock (bad)
   4:	90                   	nop
   5:	f8                   	clc
   6:	48 8b 3d b9 47 a2 12 	mov    0x12a247b9(%rip),%rdi        # 0x12a247c6
   d:	48 89 de             	mov    %rbx,%rsi
  10:	e8 f1 95 f5 f8       	call   0xf8f59606
  15:	e9 94 00 00 00       	jmp    0xae
  1a:	e8 d7 37 90 f8       	call   0xf89037f6
  1f:	41 83 c7 08          	add    $0x8,%r15d
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	0f b6 04 28          	movzbl (%rax,%rbp,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 91 00 00 00    	jne    0xc7
  36:	66 45 89 3e          	mov    %r15w,(%r14)
  3a:	49 8d 7e 02          	lea    0x2(%r14),%rdi
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89