general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f]
CPU: 1 PID: 483 Comm: dhcpcd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:dummy_queue+0x1b7/0x8e0 drivers/usb/gadget/udc/dummy_hcd.c:731
Code: fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 22 3d 92 fe 4d 8b 24 24 49 83 c4 48 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 b3 05 00 00 45 8b 24 24 44 89 e6 83 e6 02
RSP: 0018:ffffc90001276ff8 EFLAGS: 00010206
RAX: 0000000000000009 RBX: ffff8881083f7910 RCX: dffffc0000000000
RDX: ffff888115c22780 RSI: 0000000000000003 RDI: 0000000000000005
RBP: ffffc90001277078 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200024ee04 R12: 0000000000000048
R13: ffff8881083f7900 R14: 1ffff1102107ef20 R15: ffff888103fbcc90
FS:  00007f36f6a72740(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c298dc5 CR3: 000000010ebe1000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 usb_ep_queue+0xce/0x210 drivers/usb/gadget/udc/core.c:290
 eth_start_xmit+0x811/0xd40 drivers/usb/gadget/function/u_ether.c:588
 __netdev_start_xmit include/linux/netdevice.h:4859 [inline]
 netdev_start_xmit include/linux/netdevice.h:4873 [inline]
 xmit_one net/core/dev.c:3606 [inline]
 dev_hard_start_xmit+0x245/0x680 net/core/dev.c:3622
 sch_direct_xmit+0x26d/0x990 net/sched/sch_generic.c:339
 qdisc_restart net/sched/sch_generic.c:404 [inline]
 __qdisc_run+0xa3a/0x1400 net/sched/sch_generic.c:412
 qdisc_run+0x100/0x2f0 include/net/pkt_sched.h:126
 __dev_xmit_skb net/core/dev.c:3817 [inline]
 __dev_queue_xmit+0xbc6/0x2500 net/core/dev.c:4173
 dev_queue_xmit+0x17/0x20 net/core/dev.c:4254
 packet_snd net/packet/af_packet.c:3094 [inline]
 packet_sendmsg+0x3dd0/0x5020 net/packet/af_packet.c:3125
 sock_sendmsg_nosec net/socket.c:652 [inline]
 __sock_sendmsg net/socket.c:664 [inline]
 sock_write_iter+0x2a6/0x3a0 net/socket.c:1019
 do_iter_readv_writev+0x477/0x5f0 fs/read_write.c:-1
 do_iter_write+0x175/0x5e0 fs/read_write.c:866
 vfs_writev+0x2a9/0x530 fs/read_write.c:939
 do_writev+0x14e/0x2c0 fs/read_write.c:982
 __do_sys_writev fs/read_write.c:1055 [inline]
 __se_sys_writev fs/read_write.c:1052 [inline]
 __x64_sys_writev+0x7d/0x90 fs/read_write.c:1052
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f36f6afc407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffe01bd3420 EFLAGS: 00000202 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f36f6a72740 RCX: 00007f36f6afc407
RDX: 0000000000000002 RSI: 00007ffe01bd3480 RDI: 0000000000000003
RBP: 0000000000000188 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe01bd34c0
R13: 000055fd66f2a3f0 R14: 00007ffe01bd3510 R15: 00007ffe01be36e0
Modules linked in:
---[ end trace a317b7b4ee55c839 ]---
RIP: 0010:dummy_queue+0x1b7/0x8e0 drivers/usb/gadget/udc/dummy_hcd.c:731
Code: fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 22 3d 92 fe 4d 8b 24 24 49 83 c4 48 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 b3 05 00 00 45 8b 24 24 44 89 e6 83 e6 02
RSP: 0018:ffffc90001276ff8 EFLAGS: 00010206
RAX: 0000000000000009 RBX: ffff8881083f7910 RCX: dffffc0000000000
RDX: ffff888115c22780 RSI: 0000000000000003 RDI: 0000000000000005
RBP: ffffc90001277078 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200024ee04 R12: 0000000000000048
R13: ffff8881083f7900 R14: 1ffff1102107ef20 R15: ffff888103fbcc90
FS:  00007f36f6a72740(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c298dc5 CR3: 000000010ebe1000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	fc                   	cld
   1:	ff                   	lcall  (bad)
   2:	df 80 3c 08 00 74    	filds  0x7400083c(%rax)
   8:	08 4c 89 e7          	or     %cl,-0x19(%rcx,%rcx,4)
   c:	e8 22 3d 92 fe       	call   0xfe923d33
  11:	4d 8b 24 24          	mov    (%r12),%r12
  15:	49 83 c4 48          	add    $0x48,%r12
  19:	4c 89 e0             	mov    %r12,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 b3 05 00 00    	jne    0x5e9
  36:	45 8b 24 24          	mov    (%r12),%r12d
  3a:	44 89 e6             	mov    %r12d,%esi
  3d:	83 e6 02             	and    $0x2,%esi