======================================================
WARNING: possible circular locking dependency detected
4.14.299-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.1/8019 is trying to acquire lock:
 (rtnl_mutex){+.+.}, at: [<ffffffff85c2f16e>] unregister_netdevice_notifier+0x5e/0x2b0 net/core/dev.c:1630

but task is already holding lock:
 (&xt[i].mutex){+.+.}, at: [<ffffffff85f1f908>] xt_find_table_lock+0x38/0x3d0 net/netfilter/x_tables.c:1088

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&xt[i].mutex){+.+.}:
       __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+0x5e/0xd3

-> #1 (&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+0x765/0xbb0 net/core/dev.c:7211
       unregister_netdevice_many.part.0+0x18/0x2e0 net/core/dev.c:8293
       unregister_netdevice_many+0x36/0x50 net/core/dev.c:8292
       rtnl_newlink+0x13fd/0x1830 net/core/rtnetlink.c:2773
       rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4322
       netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2454
       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+0x5e/0xd3

-> #0 (rtnl_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
       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: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+0x5e/0xd3

other info that might help us debug this:

Chain exists of:
  rtnl_mutex --> &table[i].mutex --> &xt[i].mutex

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&xt[i].mutex);
                               lock(&table[i].mutex);
                               lock(&xt[i].mutex);
  lock(rtnl_mutex);

 *** DEADLOCK ***

1 lock held by syz-executor.1/8019:
 #0:  (&xt[i].mutex){+.+.}, at: [<ffffffff85f1f908>] xt_find_table_lock+0x38/0x3d0 net/netfilter/x_tables.c:1088

stack backtrace:
CPU: 0 PID: 8019 Comm: syz-executor.1 Not tainted 4.14.299-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
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
 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: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+0x5e/0xd3
ip6_tables: ip6tables: counters copy to user failed while replacing table
NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
ip6_tables: ip6tables: counters copy to user failed while replacing table
NILFS error (device loop5): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=0, inode=51539607552, rec_len=0, name_len=0
Remounting filesystem read-only
ip6_tables: ip6tables: counters copy to user failed while replacing table
NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
NILFS error (device loop5): nilfs_check_page: bad entry in directory #12: rec_len is smaller than minimal - offset=0, inode=51539607552, rec_len=0, name_len=0
Remounting filesystem read-only
ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2
Dev loop5: unable to read RDB block 8
 loop5: unable to read partition table
ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2
PM: Starting manual resume from disk
loop5: partition table beyond EOD, truncated
PM: Image not found (code -6)
VFS: Can't find an adfs filesystem on dev loop5.
loop_reread_partitions: partition scan of loop5 () failed (rc=-5)
ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2
PM: Starting manual resume from disk
PM: Image not found (code -6)
ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x2
PM: Starting manual resume from disk
PM: Image not found (code -6)
Dev loop5: unable to read RDB block 8
 loop5: unable to read partition table
capability: warning: `syz-executor.4' uses 32-bit capabilities (legacy support in use)
Dev loop2: unable to read RDB block 8
 loop2: unable to read partition table
loop5: partition table beyond EOD, truncated
loop2: partition table beyond EOD, truncated
loop_reread_partitions: partition scan of loop5 () failed (rc=-5)
VFS: Can't find an adfs filesystem on dev loop5.
loop_reread_partitions: partition scan of loop2 () failed (rc=-5)
VFS: Can't find an adfs filesystem on dev loop2.
PM: Starting manual resume from disk
PM: Image not found (code -6)
mmap: syz-executor.1 (13303) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.txt.
Dev loop5: unable to read RDB block 8
 loop5: unable to read partition table
Dev loop2: unable to read RDB block 8
 loop2: unable to read partition table
loop5: partition table beyond EOD, truncated
loop2: partition table beyond EOD, truncated
loop_reread_partitions: partition scan of loop2 () failed (rc=-5)
loop_reread_partitions: partition scan of loop5 () failed (rc=-5)
VFS: Can't find an adfs filesystem on dev loop2.
Dev loop5: unable to read RDB block 8
 loop5: unable to read partition table
loop5: partition table beyond EOD, truncated
VFS: Can't find an adfs filesystem on dev loop5.
Dev loop2: unable to read RDB block 8
 loop2: unable to read partition table
Dev loop5: unable to read RDB block 8
 loop5: unable to read partition table
loop2: partition table beyond EOD, truncated
loop5: partition table beyond EOD, truncated
VFS: Can't find an adfs filesystem on dev loop2.
loop_reread_partitions: partition scan of loop2 () failed (rc=-5)
VFS: Can't find an adfs filesystem on dev loop5.
loop_reread_partitions: partition scan of loop5 () failed (rc=-5)
attempt to access beyond end of device
loop3: rw=2049, want=160, limit=127
attempt to access beyond end of device
loop3: rw=1, want=152, limit=127
attempt to access beyond end of device
loop3: rw=2049, want=160, limit=127
attempt to access beyond end of device
loop3: rw=1, want=152, limit=127
attempt to access beyond end of device
loop2: rw=2049, want=160, limit=127
attempt to access beyond end of device
loop2: rw=1, want=152, limit=127
attempt to access beyond end of device
unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1
loop3: rw=2049, want=160, limit=127
attempt to access beyond end of device
attempt to access beyond end of device
loop5: rw=2049, want=160, limit=127
loop3: rw=1, want=152, limit=127
attempt to access beyond end of device
loop5: rw=1, want=152, limit=127
attempt to access beyond end of device
loop5: rw=2049, want=160, limit=127
attempt to access beyond end of device
loop5: rw=1, want=152, limit=127
attempt to access beyond end of device
loop2: rw=2049, want=160, limit=127
attempt to access beyond end of device
loop3: rw=2049, want=160, limit=127
attempt to access beyond end of device
loop2: rw=1, want=152, limit=127
attempt to access beyond end of device
loop3: rw=1, want=152, limit=127
attempt to access beyond end of device
loop5: rw=2049, want=160, limit=127
attempt to access beyond end of device
loop5: rw=1, want=152, limit=127
attempt to access beyond end of device
loop2: rw=2049, want=160, limit=127
attempt to access beyond end of device
loop2: rw=1, want=152, limit=127
ntfs: volume version 3.1.
ntfs: (device loop5): map_mft_record_page(): Mft record 0x18 is corrupt.  Run chkdsk.
ntfs: (device loop5): map_mft_record(): Failed with error code 5.
ntfs: (device loop5): ntfs_read_locked_inode(): Failed with error code -5.  Marking corrupt inode 0x18 as bad.  Run chkdsk.
ntfs: (device loop5): load_and_init_quota(): Failed to load $Quota.
ntfs: (device loop5): load_system_files(): Failed to load $Quota.  Mounting read-only.  Run chkdsk.
REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop4): using ordered data mode
reiserfs: using flush barriers
REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
audit: type=1804 audit(1668468713.716:54): pid=13790 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir2576138784/syzkaller.iDG4HE/153/bus" dev="sda1" ino=14251 res=1
REISERFS (device loop4): checking transaction log (loop4)
REISERFS (device loop4): Using rupasov hash to sort names
audit: type=1804 audit(1668468713.776:55): pid=13794 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir2576138784/syzkaller.iDG4HE/153/bus" dev="sda1" ino=14251 res=1
REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage.
ntfs: volume version 3.1.
ntfs: (device loop5): map_mft_record_page(): Mft record 0x18 is corrupt.  Run chkdsk.
audit: type=1804 audit(1668468713.866:56): pid=13802 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir2576138784/syzkaller.iDG4HE/154/bus" dev="sda1" ino=14258 res=1
ntfs: (device loop5): map_mft_record(): Failed with error code 5.
ntfs: volume version 3.1.
hub 9-0:1.0: USB hub found
REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal
hub 9-0:1.0: 8 ports detected
REISERFS (device loop4): using ordered data mode
reiserfs: using flush barriers
REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop4): checking transaction log (loop4)
hub 9-0:1.0: USB hub found
hub 9-0:1.0: 8 ports detected
REISERFS (device loop4): Using rupasov hash to sort names
REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage.
ntfs: volume version 3.1.
ntfs: volume version 3.1.
hub 9-0:1.0: USB hub found
hub 9-0:1.0: 8 ports detected
hub 9-0:1.0: USB hub found
hub 9-0:1.0: 8 ports detected
REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop4): using ordered data mode
reiserfs: using flush barriers
REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
hub 9-0:1.0: USB hub found
ntfs: volume version 3.1.
hub 9-0:1.0: 8 ports detected
REISERFS (device loop4): checking transaction log (loop4)
ntfs: volume version 3.1.
REISERFS (device loop4): Using rupasov hash to sort names
REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage.
hub 9-0:1.0: USB hub found
hub 9-0:1.0: 8 ports detected
hub 9-0:1.0: USB hub found
hub 9-0:1.0: 8 ports detected
hub 9-0:1.0: USB hub found
hub 9-0:1.0: 8 ports detected
device batadv0 entered promiscuous mode
lo: Cannot use loopback or non-ethernet device as HSR slave.
device batadv0 left promiscuous mode