====================================================== WARNING: possible circular locking dependency detected 4.14.232-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.5/18773 is trying to acquire lock: (&xt[i].mutex){+.+.}, at: [] match_revfn+0x43/0x210 net/netfilter/x_tables.c:332 but task is already holding lock: (&table[i].mutex){+.+.}, at: [] nfnl_lock net/netfilter/nfnetlink.c:61 [inline] (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_msg+0x726/0xc00 net/netfilter/nfnetlink.c:209 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&table[i].mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 nf_tables_netdev_event+0x10d/0x4d0 net/netfilter/nf_tables_netdev.c:122 notifier_call_chain+0x108/0x1a0 kernel/notifier.c:93 call_netdevice_notifiers_info net/core/dev.c:1667 [inline] call_netdevice_notifiers net/core/dev.c:1683 [inline] rollback_registered_many+0x765/0xba0 net/core/dev.c:7203 unregister_netdevice_many.part.0+0x18/0x2e0 net/core/dev.c:8285 unregister_netdevice_many+0x36/0x50 net/core/dev.c:8284 ip6gre_exit_net+0x41e/0x570 net/ipv6/ip6_gre.c:1212 ops_exit_list+0xa5/0x150 net/core/net_namespace.c:142 cleanup_net+0x3b3/0x840 net/core/net_namespace.c:484 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 -> #1 (rtnl_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 unregister_netdevice_notifier+0x5e/0x2b0 net/core/dev.c:1630 tee_tg_destroy+0x5c/0xb0 net/netfilter/xt_TEE.c:123 cleanup_entry+0x232/0x310 net/ipv6/netfilter/ip6_tables.c:684 __do_replace+0x38d/0x580 net/ipv6/netfilter/ip6_tables.c:1105 do_replace net/ipv6/netfilter/ip6_tables.c:1161 [inline] do_ip6t_set_ctl+0x256/0x3b0 net/ipv6/netfilter/ip6_tables.c:1687 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x5f/0xb0 net/netfilter/nf_sockopt.c:115 ipv6_setsockopt+0xc0/0x120 net/ipv6/ipv6_sockglue.c:937 udpv6_setsockopt+0x45/0x80 net/ipv6/udp.c:1459 SYSC_setsockopt net/socket.c:1865 [inline] SyS_setsockopt+0x110/0x1e0 net/socket.c:1844 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb -> #0 (&xt[i].mutex){+.+.}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 match_revfn+0x43/0x210 net/netfilter/x_tables.c:332 xt_find_revision+0x8d/0x1d0 net/netfilter/x_tables.c:380 nfnl_compat_get+0x1f7/0x870 net/netfilter/nft_compat.c:678 nfnetlink_rcv_msg+0x9bb/0xc00 net/netfilter/nfnetlink.c:214 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 nfnetlink_rcv+0x1ab/0x1da0 net/netfilter/nfnetlink.c:515 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb other info that might help us debug this: Chain exists of: &xt[i].mutex --> rtnl_mutex --> &table[i].mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&table[i].mutex); lock(rtnl_mutex); lock(&table[i].mutex); lock(&xt[i].mutex); *** DEADLOCK *** 1 lock held by syz-executor.5/18773: #0: (&table[i].mutex){+.+.}, at: [] nfnl_lock net/netfilter/nfnetlink.c:61 [inline] #0: (&table[i].mutex){+.+.}, at: [] nfnetlink_rcv_msg+0x726/0xc00 net/netfilter/nfnetlink.c:209 stack backtrace: CPU: 0 PID: 18773 Comm: syz-executor.5 Not tainted 4.14.232-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258 check_prev_add kernel/locking/lockdep.c:1905 [inline] check_prevs_add kernel/locking/lockdep.c:2022 [inline] validate_chain kernel/locking/lockdep.c:2464 [inline] __lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 match_revfn+0x43/0x210 net/netfilter/x_tables.c:332 xt_find_revision+0x8d/0x1d0 net/netfilter/x_tables.c:380 nfnl_compat_get+0x1f7/0x870 net/netfilter/nft_compat.c:678 nfnetlink_rcv_msg+0x9bb/0xc00 net/netfilter/nfnetlink.c:214 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 nfnetlink_rcv+0x1ab/0x1da0 net/netfilter/nfnetlink.c:515 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4665d9 RSP: 002b:00007f937ab5c188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000020001440 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fff74e1024f R14: 00007f937ab5c300 R15: 0000000000022000 print_req_error: I/O error, dev loop3, sector 0 EXT4-fs (loop3): ext4_check_descriptors: Checksum for group 0 failed (60935!=0) EXT4-fs (loop3): orphan cleanup on readonly fs Quota error (device loop3): v2_read_header: Failed header read: expected=8 got=0 EXT4-fs error (device loop3): ext4_free_inode:286: comm syz-executor.3: reserved or nonexistent inode 3 EXT4-fs (loop3): Remounting filesystem read-only EXT4-fs warning (device loop3): ext4_enable_quotas:5758: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop3): Cannot turn on quotas: error -22 EXT4-fs (loop3): mounted filesystem without journal. Opts: errors=remount-ro, EXT4-fs (loop3): ext4_check_descriptors: Checksum for group 0 failed (60935!=0) EXT4-fs (loop3): orphan cleanup on readonly fs Quota error (device loop3): v2_read_header: Failed header read: expected=8 got=0 EXT4-fs error (device loop3): ext4_free_inode:286: comm syz-executor.3: reserved or nonexistent inode 3 EXT4-fs (loop3): Remounting filesystem read-only EXT4-fs warning (device loop3): ext4_enable_quotas:5758: Failed to enable quota tracking (type=-1, err=-22). Please run e2fsck to fix. EXT4-fs (loop3): Cannot turn on quotas: error -22 EXT4-fs (loop3): mounted filesystem without journal. Opts: errors=remount-ro, Cannot find add_set index 0 as target Cannot find add_set index 0 as target ieee80211 phy7: mac80211_hwsim_start ieee80211 phy7: mac80211_hwsim_add_interface (type=2 mac_addr=02:00:00:00:07:00) ieee80211 phy7: mac80211_hwsim_bss_info_changed(changed=0xe vif->addr=02:00:00:00:07:00) ieee80211 phy7: ERP_CTS_PROT: 0 ieee80211 phy7: ERP_PREAMBLE: 0 Cannot find add_set index 0 as target Cannot find add_set index 0 as target ieee80211 phy7: ERP_SLOT: 0 ieee80211 phy7: mac80211_hwsim_conf_tx (queue=0 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_conf_tx (queue=1 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_conf_tx (queue=2 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_conf_tx (queue=3 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_bss_info_changed(changed=0x2000 vif->addr=02:00:00:00:07:00) ieee80211 phy7: mac80211_hwsim_config (freq=2412(2412 - 0)/noht idle=1 ps=0 smps=static) ieee80211 phy7: mac80211_hwsim_configure_filter device wlan1 entered promiscuous mode ieee80211 phy7: mac80211_hwsim_configure_filter IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready ieee80211 phy7: mac80211_hwsim_configure_filter ieee80211 phy7: mac80211_hwsim_configure_filter netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. ieee80211 phy7: mac80211_hwsim_configure_filter ieee80211 phy7: mac80211_hwsim_remove_interface (type=2 mac_addr=02:00:00:00:07:00) ieee80211 phy7: mac80211_hwsim_stop device wlan1 left promiscuous mode ieee80211 phy7: mac80211_hwsim_start ieee80211 phy7: mac80211_hwsim_add_interface (type=2 mac_addr=02:00:00:00:07:00) ieee80211 phy7: mac80211_hwsim_bss_info_changed(changed=0xe vif->addr=02:00:00:00:07:00) ieee80211 phy7: ERP_CTS_PROT: 0 ieee80211 phy7: ERP_PREAMBLE: 0 ieee80211 phy7: ERP_SLOT: 0 ieee80211 phy7: mac80211_hwsim_conf_tx (queue=0 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_conf_tx (queue=1 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_conf_tx (queue=2 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_conf_tx (queue=3 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_bss_info_changed(changed=0x2000 vif->addr=02:00:00:00:07:00) ieee80211 phy7: mac80211_hwsim_config (freq=2412(2412 - 0)/noht idle=1 ps=0 smps=static) device wlan1 entered promiscuous mode ieee80211 phy7: mac80211_hwsim_configure_filter IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready ieee80211 phy7: mac80211_hwsim_configure_filter netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. Cannot find add_set index 0 as target Cannot find add_set index 0 as target netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. Cannot find add_set index 0 as target Cannot find add_set index 0 as target ieee80211 phy7: mac80211_hwsim_configure_filter ieee80211 phy7: mac80211_hwsim_remove_interface (type=2 mac_addr=02:00:00:00:07:00) ieee80211 phy7: mac80211_hwsim_stop device wlan1 left promiscuous mode ieee80211 phy7: mac80211_hwsim_start ieee80211 phy7: mac80211_hwsim_add_interface (type=2 mac_addr=02:00:00:00:07:00) ieee80211 phy7: mac80211_hwsim_bss_info_changed(changed=0xe vif->addr=02:00:00:00:07:00) ieee80211 phy7: ERP_CTS_PROT: 0 ieee80211 phy7: ERP_PREAMBLE: 0 ieee80211 phy7: ERP_SLOT: 0 ieee80211 phy7: mac80211_hwsim_conf_tx (queue=0 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_conf_tx (queue=1 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_conf_tx (queue=2 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_conf_tx (queue=3 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_bss_info_changed(changed=0x2000 vif->addr=02:00:00:00:07:00) ieee80211 phy7: mac80211_hwsim_config (freq=2412(2412 - 0)/noht idle=1 ps=0 smps=static) device wlan1 entered promiscuous mode ieee80211 phy7: mac80211_hwsim_configure_filter IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready ieee80211 phy7: mac80211_hwsim_configure_filter netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. ip_tables: iptables: counters copy to user failed while replacing table ieee80211 phy7: mac80211_hwsim_configure_filter ieee80211 phy7: mac80211_hwsim_remove_interface (type=2 mac_addr=02:00:00:00:07:00) x_tables: ip6_tables: rpfilter match: used from hooks INPUT/POSTROUTING, but only valid from PREROUTING ieee80211 phy7: mac80211_hwsim_stop device wlan1 left promiscuous mode ieee80211 phy7: mac80211_hwsim_start ieee80211 phy7: mac80211_hwsim_add_interface (type=2 mac_addr=02:00:00:00:07:00) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) x_tables: ip6_tables: rpfilter match: used from hooks INPUT/POSTROUTING, but only valid from PREROUTING ieee80211 phy7: mac80211_hwsim_bss_info_changed(changed=0xe vif->addr=02:00:00:00:07:00) audit: type=1800 audit(1621079985.886:106): pid=19117 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="file0" dev="loop2" ino=192 res=0 ip_tables: iptables: counters copy to user failed while replacing table ieee80211 phy7: ERP_CTS_PROT: 0 ieee80211 phy7: ERP_PREAMBLE: 0 audit: type=1804 audit(1621079985.916:107): pid=19117 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir974437454/syzkaller.PJbb1k/299/file0/file0" dev="loop2" ino=192 res=1 ieee80211 phy7: ERP_SLOT: 0 audit: type=1804 audit(1621079985.916:108): pid=19117 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.2" name="/root/syzkaller-testdir974437454/syzkaller.PJbb1k/299/file0/file0" dev="loop2" ino=192 res=1 audit: type=1804 audit(1621079985.916:109): pid=19117 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir974437454/syzkaller.PJbb1k/299/file0/file0" dev="loop2" ino=192 res=1 audit: type=1804 audit(1621079985.916:110): pid=19117 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.2" name="/root/syzkaller-testdir974437454/syzkaller.PJbb1k/299/file0/file0" dev="loop2" ino=192 res=1 ieee80211 phy7: mac80211_hwsim_conf_tx (queue=0 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_conf_tx (queue=1 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_conf_tx (queue=2 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_conf_tx (queue=3 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy7: mac80211_hwsim_bss_info_changed(changed=0x2000 vif->addr=02:00:00:00:07:00) ieee80211 phy7: mac80211_hwsim_config (freq=2412(2412 - 0)/noht idle=1 ps=0 smps=static) ieee80211 phy7: mac80211_hwsim_configure_filter device wlan1 entered promiscuous mode ieee80211 phy7: mac80211_hwsim_configure_filter IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready ieee80211 phy7: mac80211_hwsim_configure_filter audit: type=1800 audit(1621079986.196:111): pid=19133 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="file0" dev="loop2" ino=193 res=0 audit: type=1804 audit(1621079986.206:112): pid=19117 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir974437454/syzkaller.PJbb1k/299/file0/file0" dev="loop2" ino=193 res=1 x_tables: ip6_tables: rpfilter match: used from hooks INPUT/POSTROUTING, but only valid from PREROUTING ip_tables: iptables: counters copy to user failed while replacing table FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) ip_tables: iptables: counters copy to user failed while replacing table audit: type=1804 audit(1621079986.216:113): pid=19117 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.2" name="/root/syzkaller-testdir974437454/syzkaller.PJbb1k/299/file0/file0" dev="loop2" ino=193 res=1 audit: type=1804 audit(1621079986.216:114): pid=19117 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir974437454/syzkaller.PJbb1k/299/file0/file0" dev="loop2" ino=193 res=1 x_tables: ip6_tables: rpfilter match: used from hooks INPUT/POSTROUTING, but only valid from PREROUTING FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) ip_tables: iptables: counters copy to user failed while replacing table kauditd_printk_skb: 3 callbacks suppressed audit: type=1804 audit(1621079986.456:118): pid=19169 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="/root/syzkaller-testdir843294134/syzkaller.F2BoQv/263/file0" dev="sda1" ino=14961 res=1 audit: type=1804 audit(1621079986.486:119): pid=19169 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir843294134/syzkaller.F2BoQv/263/file0" dev="sda1" ino=14961 res=1 ip_tables: iptables: counters copy to user failed while replacing table audit: type=1804 audit(1621079986.486:120): pid=19169 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="/root/syzkaller-testdir843294134/syzkaller.F2BoQv/263/file0" dev="sda1" ino=14961 res=1 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1800 audit(1621079986.516:121): pid=19164 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="file0" dev="loop2" ino=194 res=0 audit: type=1804 audit(1621079986.536:122): pid=19164 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir974437454/syzkaller.PJbb1k/300/file0/file0" dev="loop2" ino=194 res=1 audit: type=1804 audit(1621079986.546:123): pid=19164 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.2" name="/root/syzkaller-testdir974437454/syzkaller.PJbb1k/300/file0/file0" dev="loop2" ino=194 res=1 FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1804 audit(1621079986.546:124): pid=19164 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir974437454/syzkaller.PJbb1k/300/file0/file0" dev="loop2" ino=194 res=1 audit: type=1804 audit(1621079986.556:125): pid=19164 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.2" name="/root/syzkaller-testdir974437454/syzkaller.PJbb1k/300/file0/file0" dev="loop2" ino=194 res=1 audit: type=1800 audit(1621079986.746:126): pid=19191 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="file0" dev="loop3" ino=195 res=0 FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) audit: type=1804 audit(1621079986.756:127): pid=19191 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.3" name="/root/syzkaller-testdir820351219/syzkaller.AXm95p/272/file0/file0" dev="loop3" ino=195 res=1 ip_tables: iptables: counters copy to user failed while replacing table FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) ip_tables: iptables: counters copy to user failed while replacing table FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Process accounting resumed Process accounting resumed Process accounting resumed Process accounting resumed