kobject: 'kvm' (000000000236ff67): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (00000000b0a169e1): kobject_uevent_env kobject: 'gre0': free name kasan: GPF could be caused by NULL-ptr deref or user memory access kobject: 'loop5' (00000000b0a169e1): fill_kobj_path: path = '/devices/virtual/block/loop5' general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 19047 Comm: syz-executor.1 Not tainted 5.0.0-rc8+ #89 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop2' (000000002654e5e8): kobject_uevent_env RIP: 0010:__dentry_path+0x49e/0x7c0 fs/d_path.c:344 Code: 89 fc 41 83 e4 01 44 89 e6 e8 ee e5 b2 ff 45 84 e4 0f 85 04 02 00 00 e8 a0 e4 b2 ff 48 8b 85 18 ff ff ff 44 89 bd 40 ff ff ff <80> 38 00 0f 85 f9 02 00 00 48 8b 85 38 ff ff ff 41 83 e7 01 44 89 RSP: 0018:ffff88809f5ffad0 EFLAGS: 00010212 RAX: dffffc0000000005 RBX: 0000000000000000 RCX: ffffc90005a65000 RDX: 000000000000338d RSI: ffffffff81bcfa80 RDI: 0000000000000001 RBP: ffff88809f5ffbc0 R08: ffff888057e2a540 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88809f5ffb98 R14: ffff88808dc0563e R15: 0000000000003b5e FS: 00007f413a67b700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000734014 CR3: 0000000093d74000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kobject: 'loop2' (000000002654e5e8): fill_kobj_path: path = '/devices/virtual/block/loop2' dentry_path_raw+0x26/0x30 fs/d_path.c:371 kvm_uevent_notify_change.part.0+0x213/0x440 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4051 kvm_uevent_notify_change arch/x86/kvm/../../../virt/kvm/kvm_main.c:4018 [inline] kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3356 [inline] kvm_dev_ioctl+0x1132/0x1750 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3378 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 kobject: 'loop4' (00000000717582b3): kobject_uevent_env do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 kobject: 'loop4' (00000000717582b3): fill_kobj_path: path = '/devices/virtual/block/loop4' Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f413a67ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000006 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f413a67b6d4 R13: 00000000004c093a R14: 00000000004d2750 R15: 00000000ffffffff Modules linked in: protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop3' (0000000013e0e61f): kobject_uevent_env kobject: 'loop3' (0000000013e0e61f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (0000000052e69614): kobject_uevent_env kobject: 'loop0' (0000000052e69614): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (0000000013e0e61f): kobject_uevent_env kobject: 'loop3' (0000000013e0e61f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (0000000052e69614): kobject_uevent_env ---[ end trace b0fc40750c0bb38a ]--- kobject: 'loop0' (0000000052e69614): fill_kobj_path: path = '/devices/virtual/block/loop0' RIP: 0010:__dentry_path+0x49e/0x7c0 fs/d_path.c:344 kobject: 'loop3' (0000000013e0e61f): kobject_uevent_env Code: 89 fc 41 83 e4 01 44 89 e6 e8 ee e5 b2 ff 45 84 e4 0f 85 04 02 00 00 e8 a0 e4 b2 ff 48 8b 85 18 ff ff ff 44 89 bd 40 ff ff ff <80> 38 00 0f 85 f9 02 00 00 48 8b 85 38 ff ff ff 41 83 e7 01 44 89 kobject: 'loop3' (0000000013e0e61f): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (0000000052e69614): kobject_uevent_env RSP: 0018:ffff88809f5ffad0 EFLAGS: 00010212 kobject: 'loop0' (0000000052e69614): fill_kobj_path: path = '/devices/virtual/block/loop0' RAX: dffffc0000000005 RBX: 0000000000000000 RCX: ffffc90005a65000 RDX: 000000000000338d RSI: ffffffff81bcfa80 RDI: 0000000000000001 RBP: ffff88809f5ffbc0 R08: ffff888057e2a540 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88809f5ffb98 R14: ffff88808dc0563e R15: 0000000000003b5e FS: 00007f413a67b700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000222fe80 CR3: 0000000093d74000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400