kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 7890 Comm: syz-executor1 Not tainted 4.20.0+ #6 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: 'lo' (0000000096d5f428): kobject_add_internal: parent: 'net', set: 'devices' RSP: 0018:ffff88805c0976a8 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90007de5000 RDX: 0000000000000000 RSI: ffffffff828ac8bc RDI: 0000000000000004 RBP: ffff88805c097a78 R08: ffff8880a5764040 R09: ffffed101230e940 R10: ffffed101230e93f R11: ffff8880918749fb R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000030 R15: ffff8880918749d8 FS: 0000000000000000(0000) GS:ffff8880ae700000(0063) knlGS:00000000f5f64b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 kobject: 'lo' (0000000096d5f428): kobject_uevent_env CR2: 000055a18d9051d8 CR3: 000000009d301000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kobject: 'lo' (0000000096d5f428): fill_kobj_path: path = '/devices/virtual/net/lo' kobject: 'queues' (00000000e275752a): kobject_add_internal: parent: 'lo', set: '' fuse_dev_write+0x191/0x240 fs/fuse/dev.c:2003 kobject: 'queues' (00000000e275752a): kobject_uevent_env kobject: 'queues' (00000000e275752a): kobject_uevent_env: filter function caused the event to drop! 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: 'rx-0' (000000006b358cfd): kobject_add_internal: parent: 'queues', set: 'queues' vfs_write+0x20c/0x580 fs/read_write.c:549 ksys_write+0x105/0x260 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __ia32_sys_write+0x71/0xb0 fs/read_write.c:607 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x333/0xf98 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f68869 Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 kobject: 'rx-0' (000000006b358cfd): kobject_uevent_env RSP: 002b:00000000f5f640cc EFLAGS: 00000296 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000080 RDX: 0000000000000030 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 kobject: 'rx-0' (000000006b358cfd): fill_kobj_path: path = '/devices/virtual/net/lo/queues/rx-0' R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 928f3f2ad0b01514 ]--- kobject: 'loop2' (000000006e919cba): kobject_uevent_env QAT: Invalid ioctl kobject: 'tx-0' (00000000c4b1638f): kobject_add_internal: parent: 'queues', set: 'queues' 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: 'loop2' (000000006e919cba): fill_kobj_path: path = '/devices/virtual/block/loop2' 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: 'tx-0' (00000000c4b1638f): kobject_uevent_env kobject: '0:51' (00000000632b8b08): kobject_uevent_env kobject: 'tx-0' (00000000c4b1638f): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0' kobject: '0:51' (00000000632b8b08): fill_kobj_path: path = '/devices/virtual/bdi/0:51' kobject: '0:51' (00000000632b8b08): kobject_cleanup, parent (null) kobject: 'loop0' (000000005cf84825): kobject_uevent_env kobject: '0:51' (00000000632b8b08): calling ktype release kobject: 'loop0' (000000005cf84825): fill_kobj_path: path = '/devices/virtual/block/loop0' RSP: 0018:ffff88805c0976a8 EFLAGS: 00010247 kobject: 'tunl0' (00000000c5b5dfc1): kobject_add_internal: parent: 'net', set: 'devices' ptrace attach of "/root/syz-executor3"[7596] was attempted by "/root/syz-executor3"[7893] kobject: 'tunl0' (00000000c5b5dfc1): kobject_uevent_env kobject: '0:51': free name kobject: 'tunl0' (00000000c5b5dfc1): fill_kobj_path: path = '/devices/virtual/net/tunl0' kobject: '0:51' (00000000e50c38c7): kobject_add_internal: parent: 'bdi', set: 'devices' RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90007de5000 RDX: 0000000000000000 RSI: ffffffff828ac8bc RDI: 0000000000000004 RBP: ffff88805c097a78 R08: ffff8880a5764040 R09: ffffed101230e940 R10: ffffed101230e93f R11: ffff8880918749fb R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000030 R15: ffff8880918749d8 FS: 0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:00000000f5f64b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 kobject: '0:51' (00000000e50c38c7): kobject_uevent_env kobject: 'loop4' (000000006f02f714): kobject_uevent_env kobject: '0:51' (00000000e50c38c7): fill_kobj_path: path = '/devices/virtual/bdi/0:51' CR2: 00007f4a78307000 CR3: 000000009d301000 CR4: 00000000001406f0 QAT: Invalid ioctl kobject: 'loop4' (000000006f02f714): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'queues' (00000000777dcfc2): kobject_add_internal: parent: 'tunl0', set: '' DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'queues' (00000000777dcfc2): kobject_uevent_env DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'queues' (00000000777dcfc2): kobject_uevent_env: filter function caused the event to drop!