------------[ cut here ]------------ ret < 0 WARNING: drivers/pci/probe.c:2770 at pci_device_add+0x1343/0x1820 drivers/pci/probe.c:2770, CPU#0: syz.1.38/6054 Modules linked in: CPU: 0 UID: 0 PID: 6054 Comm: syz.1.38 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 e0 c5 a2 fc 90 0f 0b 90 90 0f 0b 90 e9 06 f7 ff ff e8 ce c5 a2 fc 90 <0f> 0b 90 e9 7e fa ff ff e8 c0 c5 a2 fc 90 0f 0b 90 e9 11 fa ff ff RSP: 0000:ffffc90006cf7910 EFLAGS: 00010283 RAX: 000000000003857c RBX: 00000000fffffff4 RCX: ffffc9000c402000 RDX: 0000000000080000 RSI: ffffffff8568dca2 RDI: ffff88804be6a580 RBP: ffff88801d6e5000 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000fffffff4 R11: 0000000000000001 R12: ffff888022883028 R13: ffff888022883000 R14: 0000000000000001 R15: ffff8880229f6000 FS: 0000000000000000(0000) GS:ffff88809574a000(0063) knlGS:00000000f5466b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000032e24008 CR3: 000000006e703000 CR4: 0000000000352ef0 Call Trace: 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:172 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+0x13a/0x8b0 arch/x86/entry/syscall_32.c:291 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:316 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7fb2fec Code: Unable to access opcode bytes at 0xf7fb2fc2. RSP: 002b:00000000f546650c EFLAGS: 00000292 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000080000140 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000