======================================================
WARNING: possible circular locking dependency detected
4.14.296-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.5/15508 is trying to acquire lock:
caif:caif_disconnect_client(): nothing to disconnect
(&xt[i].mutex){+.+.}, at: [<ffffffff85f1c063>] target_revfn+0x43/0x210 net/netfilter/x_tables.c:354
but task is already holding lock:
(&table[i].mutex){+.+.}, at: [<ffffffff85e47ff6>] nfnl_lock net/netfilter/nfnetlink.c:61 [inline]
(&table[i].mutex){+.+.}, at: [<ffffffff85e47ff6>] 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]
dev_change_name+0x3ef/0x6a0 net/core/dev.c:1232
dev_ifsioc+0x2c2/0x7d0 net/core/dev_ioctl.c:323
dev_ioctl+0x63f/0xbe0 net/core/dev_ioctl.c:515
sock_do_ioctl net/socket.c:981 [inline]
sock_ioctl+0x164/0x4c0 net/socket.c:1071
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:500 [inline]
do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
SYSC_ioctl fs/ioctl.c:701 [inline]
SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
-> #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
audit: type=1800 audit(1666804716.216:143): pid=15489 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="file0" dev="sda1" ino=14742 res=0
tee_tg_destroy+0x5c/0xb0 net/netfilter/xt_TEE.c:123
cleanup_entry+0x232/0x310 net/ipv6/netfilter/ip6_tables.c:685
__do_replace+0x38d/0x580 net/ipv4/netfilter/arp_tables.c:930
do_replace net/ipv6/netfilter/ip6_tables.c:1162 [inline]
do_ip6t_set_ctl+0x256/0x3b0 net/ipv6/netfilter/ip6_tables.c:1688
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
tcp_setsockopt+0x7b/0xc0 net/ipv4/tcp.c:2831
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
audit: type=1804 audit(1666804716.336:144): pid=15514 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1107618548/syzkaller.enxQje/218/bus" dev="sda1" ino=13954 res=1
-> #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
target_revfn+0x43/0x210 net/netfilter/x_tables.c:354
xt_find_revision+0x15e/0x1d0 net/netfilter/x_tables.c:378
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:2454
nfnetlink_rcv+0x1ab/0x1da0 net/netfilter/nfnetlink.c:515
netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322
audit: type=1800 audit(1666804716.336:145): pid=15514 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="bus" dev="sda1" ino=13954 res=0
netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893
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.5/15508:
#0: (&table[i].mutex){+.+.}, at: [<ffffffff85e47ff6>] nfnl_lock net/netfilter/nfnetlink.c:61 [inline]
#0: (&table[i].mutex){+.+.}, at: [<ffffffff85e47ff6>] nfnetlink_rcv_msg+0x726/0xc00 net/netfilter/nfnetlink.c:209
stack backtrace:
CPU: 0 PID: 15508 Comm: syz-executor.5 Not tainted 4.14.296-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
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
target_revfn+0x43/0x210 net/netfilter/x_tables.c:354
xt_find_revision+0x15e/0x1d0 net/netfilter/x_tables.c:378
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:2454
nfnetlink_rcv+0x1ab/0x1da0 net/netfilter/nfnetlink.c:515
netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322
netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893
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: 0033:0x7f392aa125a9
RSP: 002b:00007f3928f85168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f392ab32f80 RCX: 00007f392aa125a9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 00007f392aa6d7b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc6a3eebf R14: 00007f3928f85300 R15: 0000000000022000
caif:caif_disconnect_client(): nothing to disconnect
caif:caif_disconnect_client(): nothing to disconnect
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
audit: type=1800 audit(1666804718.137:146): pid=15573 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="file0" dev="sda1" ino=14228 res=0
caif:caif_disconnect_client(): nothing to disconnect
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
kauditd_printk_skb: 9 callbacks suppressed
audit: type=1800 audit(1666804718.467:156): pid=15638 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.3" name="file0" dev="sda1" ino=13987 res=0
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
audit: type=1804 audit(1666804718.567:157): pid=15654 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir727859482/syzkaller.6jBArh/248/file0" dev="sda1" ino=13972 res=1
audit: type=1804 audit(1666804718.567:158): pid=15654 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="/root/syzkaller-testdir727859482/syzkaller.6jBArh/248/file0" dev="sda1" ino=13972 res=1
audit: type=1804 audit(1666804718.617:159): pid=15657 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.3" name="/root/syzkaller-testdir3976083375/syzkaller.DBx5ov/195/file0" dev="sda1" ino=13894 res=1
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
audit: type=1804 audit(1666804718.617:160): pid=15657 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.3" name="/root/syzkaller-testdir3976083375/syzkaller.DBx5ov/195/file0" dev="sda1" ino=13894 res=1
audit: type=1804 audit(1666804718.627:161): pid=15658 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir3297455605/syzkaller.RmNY7p/238/file0" dev="sda1" ino=13906 res=1
audit: type=1804 audit(1666804718.627:162): pid=15658 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.1" name="/root/syzkaller-testdir3297455605/syzkaller.RmNY7p/238/file0" dev="sda1" ino=13906 res=1
audit: type=1804 audit(1666804718.657:163): pid=15660 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir727859482/syzkaller.6jBArh/248/file0" dev="sda1" ino=13972 res=1
audit: type=1804 audit(1666804718.657:164): pid=15660 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="/root/syzkaller-testdir727859482/syzkaller.6jBArh/248/file0" dev="sda1" ino=13972 res=1
audit: type=1804 audit(1666804718.687:165): pid=15664 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir3297455605/syzkaller.RmNY7p/238/file0" dev="sda1" ino=13906 res=1
xt_ecn: cannot match TCP bits in rule for non-tcp packets
xt_ecn: cannot match TCP bits in rule for non-tcp packets
xt_ecn: cannot match TCP bits in rule for non-tcp packets
xt_ecn: cannot match TCP bits in rule for non-tcp packets
xt_ecn: cannot match TCP bits in rule for non-tcp packets
xt_ecn: cannot match TCP bits in rule for non-tcp packets
xt_ecn: cannot match TCP bits in rule for non-tcp packets
xt_ecn: cannot match TCP bits in rule for non-tcp packets
xt_ecn: cannot match TCP bits in rule for non-tcp packets
xt_ecn: cannot match TCP bits in rule for non-tcp packets