kasan: CONFIG_KASAN_INLINE enabled validate_nla: 21 callbacks suppressed netlink: 'syz-executor2': attribute type 1 has an invalid length. kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 29015 Comm: syz-executor4 Not tainted 5.0.0-rc4+ #52 kobject: '0:51' (0000000072cfc593): kobject_add_internal: parent: 'bdi', set: 'devices' Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:fuse_retrieve fs/fuse/dev.c:1745 [inline] RIP: 0010:fuse_notify_retrieve fs/fuse/dev.c:1807 [inline] RIP: 0010:fuse_notify fs/fuse/dev.c:1840 [inline] RIP: 0010:fuse_dev_do_write+0x1e44/0x3780 fs/fuse/dev.c:1919 Code: 00 48 c1 e0 2a 80 3c 02 00 0f 85 d5 18 00 00 49 8b 9f 58 01 00 00 b8 ff ff 37 00 48 c1 e0 2a 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 39 kobject: '0:51' (0000000072cfc593): kobject_uevent_env RSP: 0018:ffff888051c2f6d8 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000e6af000 RDX: 0000000000000000 RSI: ffffffff828bb69c RDI: 0000000000000004 RBP: ffff888051c2faa8 R08: ffff8880567d6340 R09: ffffed1010d0f340 R10: ffffed1010d0f33f R11: ffff8880868799fb R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000030 R15: ffff8880868799d8 FS: 00007f7374bd9700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000073c000 CR3: 000000008a1bf000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: '0:51' (0000000072cfc593): fill_kobj_path: path = '/devices/virtual/bdi/0:51' Call Trace: kobject: '0:52' (00000000889bb512): kobject_add_internal: parent: 'bdi', set: 'devices' kobject: '0:52' (00000000889bb512): kobject_uevent_env kobject: 'loop2' (00000000b785d189): kobject_uevent_env kobject: 'loop2' (00000000b785d189): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: '0:52' (00000000889bb512): fill_kobj_path: path = '/devices/virtual/bdi/0:52' fuse_dev_write+0x191/0x240 fs/fuse/dev.c:2003 kobject: 'kvm' (00000000afbf847c): kobject_uevent_env kobject: 'kvm' (00000000afbf847c): fill_kobj_path: path = '/devices/virtual/misc/kvm' call_write_iter include/linux/fs.h:1862 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x764/0xb40 fs/read_write.c:487 kobject: 'loop1' (00000000a75a13b5): kobject_uevent_env kobject: 'loop1' (00000000a75a13b5): fill_kobj_path: path = '/devices/virtual/block/loop1' vfs_write+0x20c/0x580 fs/read_write.c:549 kobject: 'kvm' (00000000afbf847c): kobject_uevent_env ksys_write+0x105/0x260 fs/read_write.c:598 kobject: 'kvm' (00000000afbf847c): fill_kobj_path: path = '/devices/virtual/misc/kvm' __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 kobject: 'kvm' (00000000afbf847c): kobject_uevent_env entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458089 Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7374bd8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 kobject: 'kvm' (00000000afbf847c): kobject_uevent_env RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458089 RDX: 0000000000000030 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7374bd96d4 R13: 00000000004c6f60 R14: 00000000004dc688 R15: 00000000ffffffff Modules linked in: kobject: 'kvm' (00000000afbf847c): fill_kobj_path: path = '/devices/virtual/misc/kvm' net_ratelimit: 16 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 netlink: 'syz-executor2': attribute type 1 has an invalid length. protocol 88fb is buggy, dev hsr_slave_1 kobject: 'kvm' (00000000afbf847c): fill_kobj_path: path = '/devices/virtual/misc/kvm' ---[ end trace 004950233029d4f6 ]--- kobject: '0:52' (00000000889bb512): kobject_uevent_env RIP: 0010:fuse_retrieve fs/fuse/dev.c:1745 [inline] RIP: 0010:fuse_notify_retrieve fs/fuse/dev.c:1807 [inline] RIP: 0010:fuse_notify fs/fuse/dev.c:1840 [inline] RIP: 0010:fuse_dev_do_write+0x1e44/0x3780 fs/fuse/dev.c:1919 kobject: '0:52' (00000000889bb512): fill_kobj_path: path = '/devices/virtual/bdi/0:52' Code: 00 48 c1 e0 2a 80 3c 02 00 0f 85 d5 18 00 00 49 8b 9f 58 01 00 00 b8 ff ff 37 00 48 c1 e0 2a 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 39 kobject: '0:52' (00000000889bb512): kobject_cleanup, parent (null) RSP: 0018:ffff888051c2f6d8 EFLAGS: 00010247 kobject: 'loop2' (00000000b785d189): kobject_uevent_env kobject: '0:50' (00000000d074f8f9): kobject_uevent_env kobject: 'loop2' (00000000b785d189): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: '0:50' (00000000d074f8f9): fill_kobj_path: path = '/devices/virtual/bdi/0:50' kobject: 'kvm' (00000000afbf847c): kobject_uevent_env RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000e6af000 kobject: '0:52' (00000000889bb512): calling ktype release kobject: 'kvm' (00000000afbf847c): fill_kobj_path: path = '/devices/virtual/misc/kvm' netlink: 'syz-executor2': attribute type 1 has an invalid length. kobject: '0:50' (00000000d074f8f9): kobject_cleanup, parent (null) RDX: 0000000000000000 RSI: ffffffff828bb69c RDI: 0000000000000004 kobject: '0:50' (00000000d074f8f9): calling ktype release kobject: '0:52': free name kobject: '0:50': free name RBP: ffff888051c2faa8 R08: ffff8880567d6340 R09: ffffed1010d0f340 kobject: 'loop3' (00000000ce4720f6): kobject_uevent_env R10: ffffed1010d0f33f R11: ffff8880868799fb R12: 0000000000000000 kobject: 'loop3' (00000000ce4720f6): fill_kobj_path: path = '/devices/virtual/block/loop3' netlink: 'syz-executor2': attribute type 1 has an invalid length. R13: 0000000000000000 R14: 0000000000000030 R15: ffff8880868799d8 kobject: '0:50' (00000000e475e2f1): kobject_add_internal: parent: 'bdi', set: 'devices' FS: 00007f7374bd9700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 kobject: '0:51' (0000000072cfc593): kobject_uevent_env CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: '0:51' (0000000072cfc593): fill_kobj_path: path = '/devices/virtual/bdi/0:51' kobject: 'loop1' (00000000a75a13b5): kobject_uevent_env kobject: 'kvm' (00000000afbf847c): kobject_uevent_env CR2: 0000001b3132e000 CR3: 000000008a1bf000 CR4: 00000000001426e0 kobject: '0:49' (00000000c3b12c49): kobject_uevent_env kobject: '0:50' (00000000e475e2f1): kobject_uevent_env kobject: '0:51' (0000000072cfc593): kobject_cleanup, parent (null) kobject: 'loop1' (00000000a75a13b5): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: '0:49' (00000000c3b12c49): fill_kobj_path: path = '/devices/virtual/bdi/0:49' kobject: '0:50' (00000000e475e2f1): fill_kobj_path: path = '/devices/virtual/bdi/0:50' kobject: '0:51' (0000000072cfc593): calling ktype release DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'kvm' (00000000afbf847c): fill_kobj_path: path = '/devices/virtual/misc/kvm' DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: '0:49' (00000000c3b12c49): kobject_cleanup, parent (null)