IPVS: ftp: loaded support on port[0] = 21 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 kobject: 'tx-0' (000000000abf6493): kobject_add_internal: parent: 'queues', set: 'queues' CPU: 0 PID: 8674 Comm: syz-executor2 Not tainted 4.20.0-rc4+ #356 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid+0x84/0x100 lib/list_debug.c:51 Code: 0f 84 60 01 00 00 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 39 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 5f 49 8b 14 24 48 39 da 0f 85 4e 01 00 00 49 8d 7d kobject: 'tx-0' (000000000abf6493): kobject_uevent_env RSP: 0018:ffff888183696a48 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8881cdc5f898 RCX: ffffc9000a01f000 RDX: 0000000000000000 RSI: ffffffff8751c1c3 RDI: ffff8881cdc5f8a0 RBP: ffff888183696a60 R08: ffff8881778dc400 R09: ffff888183697488 kobject: 'tx-0' (000000000abf6493): fill_kobj_path: path = '/devices/virtual/net/ip_vti0/queues/tx-0' R10: ffffed10306d2eb6 R11: 0000000000000003 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8881b60caa60 R15: dffffc0000000000 FS: 00007f0e4b339700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e121000 CR3: 00000001d82f1000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'sit0' (000000009192520a): kobject_cleanup, parent (null) DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'sit0' (000000009192520a): auto cleanup 'remove' event Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_del_init include/linux/list.h:159 [inline] sctp_sched_dequeue_common+0xab/0x610 net/sctp/stream_sched.c:267 kobject: 'ip6_vti0' (000000000aae301a): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'sit0' (000000009192520a): kobject_uevent_env sctp_sched_fcfs_dequeue+0x18d/0x280 net/sctp/stream_sched.c:90 kobject: 'ip6_vti0' (000000000aae301a): kobject_uevent_env sctp_outq_dequeue_data net/sctp/outqueue.c:90 [inline] sctp_outq_flush_data net/sctp/outqueue.c:1079 [inline] sctp_outq_flush+0x13e2/0x34f0 net/sctp/outqueue.c:1205 kobject: 'ip6_vti0' (000000000aae301a): fill_kobj_path: path = '/devices/virtual/net/ip6_vti0' kobject: 'sit0' (000000009192520a): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'queues' (00000000df84f163): kobject_add_internal: parent: 'ip6_vti0', set: '' kobject: 'queues' (00000000df84f163): kobject_uevent_env kobject: 'queues' (00000000df84f163): kobject_uevent_env: filter function caused the event to drop! kobject: 'sit0' (000000009192520a): calling ktype release kobject: 'rx-0' (000000008b966a7e): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (000000008b966a7e): kobject_uevent_env kobject: 'sit0': free name kobject: 'rx-0' (000000008b966a7e): fill_kobj_path: path = '/devices/virtual/net/ip6_vti0/queues/rx-0' kobject: 'tx-0' (00000000dab6dd28): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (00000000dab6dd28): kobject_uevent_env kobject: 'tx-0' (00000000dab6dd28): fill_kobj_path: path = '/devices/virtual/net/ip6_vti0/queues/tx-0' sctp_outq_uncork+0x6a/0x80 net/sctp/outqueue.c:772 kobject: 'sit0' (0000000066cc1c9c): kobject_add_internal: parent: 'net', set: 'devices' sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1820 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1220 [inline] sctp_do_sm+0x608/0x7190 net/sctp/sm_sideeffect.c:1191 kobject: 'sit0' (0000000066cc1c9c): kobject_uevent_env kobject: 'sit0' (0000000066cc1c9c): fill_kobj_path: path = '/devices/virtual/net/sit0' kobject: 'queues' (00000000eee9aff5): kobject_add_internal: parent: 'sit0', set: '' kobject: 'queues' (00000000eee9aff5): kobject_uevent_env kobject: 'queues' (00000000eee9aff5): kobject_uevent_env: filter function caused the event to drop! sctp_primitive_SEND+0xa0/0xd0 net/sctp/primitive.c:178 sctp_sendmsg_to_asoc+0xa1a/0x1a20 net/sctp/socket.c:1955 kobject: 'rx-0' (0000000084e2d323): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (0000000084e2d323): kobject_uevent_env sctp_sendmsg+0x13c2/0x1da0 net/sctp/socket.c:2113 kobject: 'rx-0' (0000000084e2d323): fill_kobj_path: path = '/devices/virtual/net/sit0/queues/rx-0' inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798 kobject: 'tx-0' (00000000184c3ea3): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (00000000184c3ea3): kobject_uevent_env sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 sock_write_iter+0x35e/0x5c0 net/socket.c:900 call_write_iter include/linux/fs.h:1857 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x6b8/0x9f0 fs/read_write.c:487 kobject: 'tx-0' (00000000184c3ea3): fill_kobj_path: path = '/devices/virtual/net/sit0/queues/tx-0' vfs_write+0x1fc/0x560 fs/read_write.c:549 kobject: 'loop3' (000000005920a20e): kobject_uevent_env ksys_write+0x101/0x260 fs/read_write.c:598 __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 kobject: 'loop3' (000000005920a20e): fill_kobj_path: path = '/devices/virtual/block/loop3' do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 kobject: 'loop5' (00000000a4af5c44): kobject_uevent_env kobject: 'loop5' (00000000a4af5c44): fill_kobj_path: path = '/devices/virtual/block/loop5' entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0e4b338c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 kobject: 'loop4' (00000000f4166b01): kobject_uevent_env RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000034000 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0e4b3396d4 R13: 00000000004c5cde R14: 00000000004da090 R15: 00000000ffffffff Modules linked in: IPVS: ftp: loaded support on port[0] = 21 ---[ end trace 812e73080dafe437 ]--- kobject: 'loop4' (00000000f4166b01): fill_kobj_path: path = '/devices/virtual/block/loop4' RIP: 0010:__list_del_entry_valid+0x84/0x100 lib/list_debug.c:51 kobject: 'loop3' (000000005920a20e): kobject_uevent_env kobject: 'rx-0' (0000000062f168e5): kobject_cleanup, parent 0000000001d1a515 kobject: 'loop3' (000000005920a20e): fill_kobj_path: path = '/devices/virtual/block/loop3' Code: 0f 84 60 01 00 00 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 39 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 5f 49 8b 14 24 48 39 da 0f 85 4e 01 00 00 49 8d 7d kobject: 'rx-0' (0000000062f168e5): auto cleanup 'remove' event RSP: 0018:ffff888183696a48 EFLAGS: 00010246 kobject: 'rx-0' (0000000062f168e5): kobject_uevent_env RAX: dffffc0000000000 RBX: ffff8881cdc5f898 RCX: ffffc9000a01f000 kobject: 'rx-0' (0000000062f168e5): kobject_uevent_env: uevent_suppress caused the event to drop! RDX: 0000000000000000 RSI: ffffffff8751c1c3 RDI: ffff8881cdc5f8a0 kobject: 'rx-0' (0000000062f168e5): auto cleanup kobject_del RBP: ffff888183696a60 R08: ffff8881778dc400 R09: ffff888183697488 kobject: 'rx-0' (0000000062f168e5): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (000000004a4e3c5f): kobject_cleanup, parent 0000000001d1a515 R10: ffffed10306d2eb6 R11: 0000000000000003 R12: 0000000000000000 kobject: 'tx-0' (000000004a4e3c5f): auto cleanup 'remove' event R13: 0000000000000000 R14: ffff8881b60caa60 R15: dffffc0000000000 kobject: 'tx-0' (000000004a4e3c5f): kobject_uevent_env kobject: 'tx-0' (000000004a4e3c5f): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'tx-0' (000000004a4e3c5f): auto cleanup kobject_del FS: 00007f0e4b339700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 kobject: 'tx-0' (000000004a4e3c5f): calling ktype release CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'tx-0': free name CR2: 00007f5b559a5518 CR3: 00000001d82f1000 CR4: 00000000001406e0 kobject: 'queues' (0000000001d1a515): kobject_cleanup, parent (null) DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'queues' (0000000001d1a515): calling ktype release DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'queues' (0000000001d1a515): kset_release