IPVS: ftp: loaded support on port[0] = 21 ------------[ cut here ]------------ kernel BUG at fs/buffer.c:605! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 11900 Comm: syz-executor.5 Not tainted 4.14.134 #30 kobject: 'tx-0' (ffff8880a8a72318): kobject_uevent_env Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888056b88180 task.stack: ffff888095158000 RIP: 0010:mark_buffer_dirty_inode fs/buffer.c:605 [inline] RIP: 0010:mark_buffer_dirty_inode+0x2ea/0x3e0 fs/buffer.c:596 RSP: 0018:ffff88809515f678 EFLAGS: 00010212 kobject: 'tx-0' (ffff8880a8a72318): fill_kobj_path: path = '/devices/virtual/net/gretap0/queues/tx-0' RAX: 0000000000040000 RBX: ffff88808cbec888 RCX: ffffc9000925f000 RDX: 0000000000034ff2 RSI: ffffffff819921ea RDI: ffff88802dd679b8 RBP: ffff88809515f6b0 R08: ffff888056b88180 R09: 0000000000000004 R10: 0000000000000000 R11: ffff888056b88180 R12: ffff88802dd67858 kobject: 'batman_adv' (ffff88808cc19180): kobject_add_internal: parent: 'gretap0', set: '' R13: 0000000000000000 R14: ffff888087625ba0 R15: 0000000000000c22 FS: 00007ff10e963700(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f98500d0af0 CR3: 0000000055945000 CR4: 00000000001426f0 kobject: 'erspan0' (ffff888054941030): kobject_add_internal: parent: 'net', set: 'devices' DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'erspan0' (ffff888054941030): kobject_uevent_env Call Trace: fat16_ent_put+0xc5/0x100 fs/fat/fatent.c:181 fat_free_clusters+0x369/0x810 fs/fat/fatent.c:593 kobject: 'erspan0' (ffff888054941030): fill_kobj_path: path = '/devices/virtual/net/erspan0' kobject: 'queues' (ffff8880a0ca9048): kobject_add_internal: parent: 'erspan0', set: '' fat_free fs/fat/file.c:351 [inline] fat_truncate_blocks+0x693/0xae0 fs/fat/file.c:369 kobject: 'queues' (ffff8880a0ca9048): kobject_uevent_env kobject: 'queues' (ffff8880a0ca9048): kobject_uevent_env: filter function caused the event to drop! fat_setattr+0x6c1/0xae0 fs/fat/file.c:513 kobject: 'rx-0' (ffff8880a0f97910): kobject_add_internal: parent: 'queues', set: 'queues' notify_change+0x8d1/0xd10 fs/attr.c:313 do_truncate+0x124/0x1c0 fs/open.c:63 handle_truncate fs/namei.c:3009 [inline] do_last fs/namei.c:3434 [inline] path_openat+0x2786/0x3f70 fs/namei.c:3566 kobject: 'rx-0' (ffff8880a0f97910): kobject_uevent_env do_filp_open+0x18e/0x250 fs/namei.c:3600 kobject: 'rx-0' (ffff8880a0f97910): fill_kobj_path: path = '/devices/virtual/net/erspan0/queues/rx-0' do_sys_open+0x2c5/0x430 fs/open.c:1065 SYSC_open fs/open.c:1083 [inline] SyS_open fs/open.c:1078 [inline] SYSC_creat fs/open.c:1123 [inline] SyS_creat+0x27/0x30 fs/open.c:1121 kobject: 'tx-0' (ffff8880a955ac98): kobject_add_internal: parent: 'queues', set: 'queues' do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459829 RSP: 002b:00007ff10e962c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000459829 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff10e9636d4 R13: 00000000004bfe84 R14: 00000000004d1c40 R15: 00000000ffffffff Code: fa 48 b8 00 kobject: 'tx-0' (ffff8880a955ac98): kobject_uevent_env 00 00 00 00 fc ff df 48 kobject: 'tx-0' (ffff8880a955ac98): fill_kobj_path: path = '/devices/virtual/net/erspan0/queues/tx-0' c1 ea 03 80 3c 02 00 75 4d 4c 89 kobject: 'batman_adv' (ffff88808ad01880): kobject_add_internal: parent: 'erspan0', set: '' 63 58 4c 89 ef e8 90 3c 82 04 e9 13 fe ff ff e8 16 85 c3 ff <0f> 0b 4c 89 ff e8 dc 26 ed ff e9 f8 fd ff ff e8 d2 26 ed ff e9 kobject: 'ip_vti0' (ffff8880549aa730): kobject_add_internal: parent: 'net', set: 'devices' RIP: mark_buffer_dirty_inode fs/buffer.c:605 [inline] RSP: ffff88809515f678 RIP: mark_buffer_dirty_inode+0x2ea/0x3e0 fs/buffer.c:596 RSP: ffff88809515f678 ---[ end trace fb66d5c81331c30c ]--- kobject: 'loop1' (ffff8880a49c4f60): kobject_uevent_env