audit: type=1800 audit(1642453025.219:9): pid=9548 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="sda1" ino=13919 res=0
device geneve2 entered promiscuous mode
audit: type=1800 audit(1642453025.229:10): pid=9603 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.5" name="bus" dev="sda1" ino=13926 res=0
======================================================
WARNING: possible circular locking dependency detected
4.14.262-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.4/9606 is trying to acquire lock:
 (&table[i].mutex){+.+.}, at: [<ffffffff85f024dd>] nf_tables_netdev_event+0x10d/0x4d0 net/netfilter/nf_tables_netdev.c:122

but task is already holding lock:
 (rtnl_mutex){+.+.}, at: [<ffffffff85c8542d>] rtnl_lock net/core/rtnetlink.c:72 [inline]
 (rtnl_mutex){+.+.}, at: [<ffffffff85c8542d>] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4315

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (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+0x1fd/0x2d0 net/ipv4/netfilter/ip_tables.c:666
       __do_replace+0x38d/0x570 net/ipv4/netfilter/ip_tables.c:1086
       do_replace net/ipv4/netfilter/ip_tables.c:1142 [inline]
       do_ipt_set_ctl+0x256/0x3a0 net/ipv4/netfilter/ip_tables.c:1676
       nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
       nf_setsockopt+0x5f/0xb0 net/netfilter/nf_sockopt.c:115
       ip_setsockopt net/ipv4/ip_sockglue.c:1255 [inline]
       ip_setsockopt+0x94/0xb0 net/ipv4/ip_sockglue.c:1240
       tcp_setsockopt+0x7b/0xc0 net/ipv4/tcp.c:2828
       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

-> #1 (&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:2446
       nfnetlink_rcv+0x1ab/0x1da0 net/netfilter/nfnetlink.c:515
       netlink_unicast_kernel net/netlink/af_netlink.c:1294 [inline]
       netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1320
       netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1891
       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

-> #0 (&table[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
       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: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+0x1416/0x1860 net/core/rtnetlink.c:2771
       rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4320
       netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2446
       netlink_unicast_kernel net/netlink/af_netlink.c:1294 [inline]
       netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1320
       netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1891
       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:
  &table[i].mutex --> &xt[i].mutex --> rtnl_mutex

 Possible unsafe locking scenario:

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

 *** DEADLOCK ***

1 lock held by syz-executor.4/9606:
 #0:  (rtnl_mutex){+.+.}, at: [<ffffffff85c8542d>] rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0:  (rtnl_mutex){+.+.}, at: [<ffffffff85c8542d>] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4315

stack backtrace:
CPU: 0 PID: 9606 Comm: syz-executor.4 Not tainted 4.14.262-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
 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: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+0x1416/0x1860 net/core/rtnetlink.c:2771
 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4320
 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2446
 netlink_unicast_kernel net/netlink/af_netlink.c:1294 [inline]
 netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1320
 netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1891
 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: 0033:0x7f56e5bf2fe9
RSP: 002b:00007f56e4568168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f56e5d05f60 RCX: 00007f56e5bf2fe9
RDX: 0000000000040810 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007f56e5c4d08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd11a7a1ef R14: 00007f56e4568300 R15: 0000000000022000
audit: type=1800 audit(1642453025.359:11): pid=9622 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="sda1" ino=13911 res=0
ip_tables: iptables: counters copy to user failed while replacing table
ip_tables: iptables: counters copy to user failed while replacing table
device geneve2 entered promiscuous mode
device geneve2 entered promiscuous mode
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
ceph: device name is missing path (no : separator in /dev/)
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
ceph: device name is missing path (no : separator in /dev/)
ceph: device name is missing path (no : separator in /dev/)
ceph: device name is missing path (no : separator in /dev/)
ceph: device name is missing path (no : separator in /dev/)
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
ceph: device name is missing path (no : separator in /dev/)
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details.
ceph: device name is missing path (no : separator in /dev/)
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
overlayfs: fs on './file0' does not support file handles, falling back to index=off.
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
ceph: device name is missing path (no : separator in /dev/)
NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024)
kauditd_printk_skb: 9 callbacks suppressed
audit: type=1800 audit(1642453028.570:21): pid=10210 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="sda1" ino=13951 res=0
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096)
NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 1 PID: 10238 Comm: syz-executor.3 Not tainted 4.14.262-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
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc_track_caller+0x2bc/0x400 mm/slab.c:3735
 memdup_user+0x22/0xa0 mm/util.c:164
 strndup_user+0x5b/0xf0 mm/util.c:195
 keyctl_keyring_search+0xbd/0x340 security/keys/keyctl.c:673
 SYSC_keyctl security/keys/keyctl.c:1737 [inline]
 SyS_keyctl+0x223/0x390 security/keys/keyctl.c:1701
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f183a81ffe9
RSP: 002b:00007f1839195168 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00007f183a932f60 RCX: 00007f183a81ffe9
RDX: 0000000020000000 RSI: 0000000029a71f8e RDI: 000000000000000a
RBP: 00007f18391951d0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffccfcf375f R14: 00007f1839195300 R15: 0000000000022000
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
audit: type=1800 audit(1642453028.970:22): pid=10261 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="sda1" ino=13941 res=0
NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024)
NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096)
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 10304 Comm: syz-executor.4 Not tainted 4.14.262-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
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc_track_caller+0x2bc/0x400 mm/slab.c:3735
 memdup_user+0x22/0xa0 mm/util.c:164
 strndup_user+0x5b/0xf0 mm/util.c:195
 keyctl_keyring_search+0xbd/0x340 security/keys/keyctl.c:673
 SYSC_keyctl security/keys/keyctl.c:1737 [inline]
 SyS_keyctl+0x223/0x390 security/keys/keyctl.c:1701
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f56e5bf2fe9
RSP: 002b:00007f56e4568168 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00007f56e5d05f60 RCX: 00007f56e5bf2fe9
RDX: 0000000020000000 RSI: 000000002a21817f RDI: 000000000000000a
RBP: 00007f56e45681d0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd11a7a1ef R14: 00007f56e4568300 R15: 0000000000022000
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
audit: type=1800 audit(1642453029.750:23): pid=10331 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="bus" dev="sda1" ino=13968 res=0
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024)
audit: type=1800 audit(1642453029.780:24): pid=10341 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=13959 res=0
NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 4096)
NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
ceph: device name is missing path (no : separator in /de)
ceph: device name is missing path (no : separator in /)
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
audit: type=1800 audit(1642453030.140:25): pid=10440 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=13975 res=0
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
audit: type=1800 audit(1642453030.310:26): pid=10512 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=13991 res=0
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue
audit: type=1800 audit(1642453031.210:27): pid=10764 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=13985 res=0
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
audit: type=1800 audit(1642453031.310:28): pid=10801 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=13954 res=0
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
audit: type=1800 audit(1642453032.190:29): pid=10901 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.4" name="bus" dev="sda1" ino=13986 res=0
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop5): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue