attempt to access beyond end of device loop2: rw=12288, want=12296, limit=20 F2FS-fs (loop2): Failed to get valid F2FS checkpoint 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: 0 PID: 7878 Comm: syz-executor4 Not tainted 4.19.0-rc4-next-20180921+ #77 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:nla_get_be32 include/net/netlink.h:1106 [inline] RIP: 0010:ctnetlink_alloc_filter+0xb9/0x200 net/netfilter/nf_conntrack_netlink.c:843 Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 57 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 40 49 8d 7d 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 06 RSP: 0018:ffff88018a747290 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: ffff8801d7d1f4c0 RCX: ffffc90003e56000 RDX: 0000000000000000 RSI: ffffffff864e6f4d RDI: 0000000000000004 RBP: ffff88018a7472a8 R08: ffff88018a728040 R09: ffffed003b5a5b57 R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: ffff88018a747500 R13: 0000000000000000 R14: 0000000000000155 R15: 000000000000000a FS: 00007ff3d55bc700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc594ab5518 CR3: 00000001d3a50000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ctnetlink_flush_conntrack net/netfilter/nf_conntrack_netlink.c:1227 [inline] ctnetlink_del_conntrack+0x65d/0x840 net/netfilter/nf_conntrack_netlink.c:1264 nfnetlink_rcv_msg+0xdd3/0x10c0 net/netfilter/nfnetlink.c:228 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2447 nfnetlink_rcv+0x1c0/0x4d0 net/netfilter/nfnetlink.c:560 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:632 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2117 __sys_sendmsg+0x11d/0x280 net/socket.c:2155 __do_sys_sendmsg net/socket.c:2164 [inline] __se_sys_sendmsg net/socket.c:2162 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2162 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: 1d b4 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff3d55bbc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ff3d55bc6d4 RCX: 0000000000457679 RDX: 0000000000000000 RSI: 0000000020d65000 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d5520 R14: 00000000004c38d2 R15: 0000000000000000 Modules linked in: kobject: 'bluetooth' (0000000047224204): kobject_add_internal: parent: 'virtual', set: '(null)' kobject: 'hci0' (000000001b29ae97): kobject_add_internal: parent: 'bluetooth', set: 'devices' kobject: 'hci0' (000000001b29ae97): kobject_uevent_env ---[ end trace 0f28a4a987a886f7 ]--- kobject: 'hci0' (000000001b29ae97): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0' kobject: 'loop1' (000000006205b43e): kobject_uevent_env kobject: 'rfkill4' (00000000735d8371): kobject_add_internal: parent: 'hci0', set: 'devices' RIP: 0010:nla_get_be32 include/net/netlink.h:1106 [inline] RIP: 0010:ctnetlink_alloc_filter+0xb9/0x200 net/netfilter/nf_conntrack_netlink.c:843 kobject: 'rfkill4' (00000000735d8371): kobject_uevent_env kobject: 'loop1' (000000006205b43e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'rfkill4' (00000000735d8371): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill4' Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 57 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 40 49 8d 7d 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 06 kobject: 'loop2' (000000006635588c): kobject_uevent_env kobject: 'rfkill4' (00000000735d8371): kobject_uevent_env kobject: 'loop2' (000000006635588c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'rfkill4' (00000000735d8371): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0/rfkill4' kobject: 'loop2' (000000006635588c): kobject_uevent_env kobject: 'loop2' (000000006635588c): kobject_uevent_env kobject: 'loop2' (000000006635588c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (000000006635588c): fill_kobj_path: path = '/devices/virtual/block/loop2' F2FS-fs (loop2): Magic Mismatch, valid(0xf2f52010) - read(0x0) kobject: 'rfkill4' (00000000735d8371): kobject_cleanup, parent (null) F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock attempt to access beyond end of device loop2: rw=12288, want=8200, limit=20 kobject: 'rfkill4' (00000000735d8371): calling ktype release attempt to access beyond end of device loop2: rw=12288, want=12296, limit=20 kobject: 'rfkill4': free name F2FS-fs (loop2): Failed to get valid F2FS checkpoint kobject: 'hci0' (000000001b29ae97): kobject_uevent_env F2FS-fs (loop2): Magic Mismatch, valid(0xf2f52010) - read(0x0) kobject: 'hci0' (000000001b29ae97): fill_kobj_path: path = '/devices/virtual/bluetooth/hci0' F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock kobject: 'bluetooth' (0000000047224204): kobject_cleanup, parent (null) attempt to access beyond end of device kobject: 'bluetooth' (0000000047224204): calling ktype release loop2: rw=12288, want=8200, limit=20 kobject: 'bluetooth': free name attempt to access beyond end of device kobject: 'hci0' (000000001b29ae97): kobject_cleanup, parent (null) loop2: rw=12288, want=12296, limit=20 kobject: 'hci0' (000000001b29ae97): calling ktype release kobject: 'hci0': free name F2FS-fs (loop2): Failed to get valid F2FS checkpoint RSP: 0018:ffff88018a747290 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: ffff8801d7d1f4c0 RCX: ffffc90003e56000 RDX: 0000000000000000 RSI: ffffffff864e6f4d RDI: 0000000000000004 RBP: ffff88018a7472a8 R08: ffff88018a728040 R09: ffffed003b5a5b57 R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: ffff88018a747500 R13: 0000000000000000 R14: 0000000000000155 R15: 000000000000000a FS: 00007ff3d55bc700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc5950ff000 CR3: 00000001d3a50000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'loop2' (000000006635588c): kobject_uevent_env