pci (null): BAR 3 [mem 0xfeaf0000-0xfeaf3fff]
pci (null): ROM [mem 0xfea00000-0xfea3ffff pref]
pci (null): enabling Extended Tags
------------[ cut here ]------------
ret < 0
WARNING: drivers/pci/probe.c:2770 at pci_device_add+0x1343/0x1820 drivers/pci/probe.c:2770, CPU#3: syz.0.174/6773
Modules linked in:
CPU: 3 UID: 0 PID: 6773 Comm: syz.0.174 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:pci_device_add+0x1343/0x1820 drivers/pci/probe.c:2770
Code: e5 04 83 e0 8f 09 e8 88 83 c8 00 00 00 e9 20 f4 ff ff e8 70 4c 9c fc 90 0f 0b 90 90 0f 0b 90 e9 06 f7 ff ff e8 5e 4c 9c fc 90 <0f> 0b 90 e9 7e fa ff ff e8 50 4c 9c fc 90 0f 0b 90 e9 11 fa ff ff
RSP: 0018:ffffc90007f0f910 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000ffffffea RCX: 0000000000000000
RDX: ffff888044be8000 RSI: ffffffff85711e32 RDI: ffff888044be8000
RBP: ffff88801dae9000 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffffea R11: 0000000000000001 R12: ffff888022b7c028
R13: ffff888022b7c000 R14: 0000000000000001 R15: ffff888022c86000
FS:  0000000000000000(0000) GS:ffff8880955c7000(0063) knlGS:00000000f54a6b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007fdc6131b6b0 CR3: 000000006ddb4000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 pci_scan_single_device drivers/pci/probe.c:2794 [inline]
 pci_scan_single_device+0x1d0/0x240 drivers/pci/probe.c:2780
 pci_scan_slot+0x1c9/0x7c0 drivers/pci/probe.c:2877
 pci_scan_child_bus_extend+0x6b/0x7b0 drivers/pci/probe.c:3096
 pci_scan_child_bus drivers/pci/probe.c:3209 [inline]
 pci_rescan_bus+0x18/0x40 drivers/pci/probe.c:3500
 rescan_store+0xfb/0x130 drivers/pci/pci-sysfs.c:474
 bus_attr_store+0x74/0xb0 drivers/base/bus.c:173
 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:145
 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x6af/0x1050 fs/read_write.c:687
 ksys_write+0x12a/0x250 fs/read_write.c:739
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:79 [inline]
 __do_fast_syscall_32+0x14b/0x8c0 arch/x86/entry/syscall_32.c:282
 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:307
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7ff5fbc
Code: d2 74 05 c1 e8 0c 89 02 8b 5d fc 31 c0 c9 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 2e 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 58 b8
RSP: 002b:00000000f54a650c EFLAGS: 00000292 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000800004c0
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	d2 74 05 c1          	shlb   %cl,-0x3f(%rbp,%rax,1)
   4:	e8 0c 89 02 8b       	call   0x8b028915
   9:	5d                   	pop    %rbp
   a:	fc                   	cld
   b:	31 c0                	xor    %eax,%eax
   d:	c9                   	leave
   e:	c3                   	ret
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	0f 1f 00             	nopl   (%rax)
  21:	51                   	push   %rcx
  22:	52                   	push   %rdx
  23:	55                   	push   %rbp
  24:	89 e5                	mov    %esp,%ebp
  26:	0f 34                	sysenter
  28:	cd 80                	int    $0x80
* 2a:	5d                   	pop    %rbp <-- trapping instruction
  2b:	5a                   	pop    %rdx
  2c:	59                   	pop    %rcx
  2d:	c3                   	ret
  2e:	90                   	nop
  2f:	2e 8d b4 26 00 00 00 	cs lea 0x0(%rsi,%riz,1),%esi
  36:	00
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  3e:	58                   	pop    %rax
  3f:	b8                   	.byte 0xb8