netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.

======================================================
[ INFO: possible circular locking dependency detected ]
4.4.167+ #4 Not tainted
-------------------------------------------------------
syz-executor1/15118 is trying to acquire lock:
 (&sig->cred_guard_mutex){+.+.+.}, at: [<ffffffff815e3bf4>] lock_trace+0x44/0xc0 fs/proc/base.c:448

but task is already holding lock:
 (&p->lock){+.+.+.}, at: [<ffffffff8150232d>] seq_read+0xdd/0x12b0 fs/seq_file.c:178

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

       [<ffffffff812037de>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff827096c2>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
       [<ffffffff827096c2>] mutex_lock_nested+0xc2/0xb60 kernel/locking/mutex.c:621
       [<ffffffff8150232d>] seq_read+0xdd/0x12b0 fs/seq_file.c:178
       [<ffffffff81491e48>] do_loop_readv_writev+0x148/0x1e0 fs/read_write.c:680
       [<ffffffff81493c81>] do_readv_writev+0x581/0x6f0 fs/read_write.c:810
       [<ffffffff81493e68>] vfs_readv+0x78/0xb0 fs/read_write.c:834
       [<ffffffff8153060f>] kernel_readv fs/splice.c:586 [inline]
       [<ffffffff8153060f>] default_file_splice_read+0x50f/0x8f0 fs/splice.c:662
       [<ffffffff8152c4e7>] do_splice_to+0xf7/0x140 fs/splice.c:1154
       [<ffffffff8152c772>] splice_direct_to_actor+0x242/0x830 fs/splice.c:1226
       [<ffffffff8152cf03>] do_splice_direct+0x1a3/0x270 fs/splice.c:1337
       [<ffffffff814950a4>] do_sendfile+0x4e4/0xb80 fs/read_write.c:1227
       [<ffffffff814971f1>] C_SYSC_sendfile fs/read_write.c:1303 [inline]
       [<ffffffff814971f1>] compat_SyS_sendfile+0xd1/0x160 fs/read_write.c:1292
       [<ffffffff810060fe>] do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
       [<ffffffff810060fe>] do_fast_syscall_32+0x31e/0xa80 arch/x86/entry/common.c:397
       [<ffffffff82717690>] sysenter_flags_fixed+0xd/0x1a

       [<ffffffff812037de>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff8149977e>] percpu_down_read include/linux/percpu-rwsem.h:26 [inline]
       [<ffffffff8149977e>] __sb_start_write+0x1ae/0x310 fs/super.c:1221
       [<ffffffff816bc0a7>] sb_start_write include/linux/fs.h:1517 [inline]
       [<ffffffff816bc0a7>] ext4_run_li_request fs/ext4/super.c:2674 [inline]
       [<ffffffff816bc0a7>] ext4_lazyinit_thread+0x1a7/0x750 fs/ext4/super.c:2773
       [<ffffffff81134788>] kthread+0x268/0x300 kernel/kthread.c:211
       [<ffffffff82716305>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:537

       [<ffffffff812037de>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff827096c2>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
       [<ffffffff827096c2>] mutex_lock_nested+0xc2/0xb60 kernel/locking/mutex.c:621
       [<ffffffff816c61a4>] ext4_register_li_request+0x304/0x7a0 fs/ext4/super.c:2961
       [<ffffffff816c79a8>] ext4_remount+0x1368/0x1bb0 fs/ext4/super.c:4911
       [<ffffffff8149ca28>] do_remount_sb2+0x428/0x7d0 fs/super.c:771
       [<ffffffff814fcf4e>] do_remount fs/namespace.c:2347 [inline]
       [<ffffffff814fcf4e>] do_mount+0x101e/0x2a10 fs/namespace.c:2860
       [<ffffffff814ff491>] SYSC_mount fs/namespace.c:3063 [inline]
       [<ffffffff814ff491>] SyS_mount+0x191/0x1c0 fs/namespace.c:3041
       [<ffffffff82715ee1>] entry_SYSCALL_64_fastpath+0x1e/0x9a

       [<ffffffff812037de>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff827096c2>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
       [<ffffffff827096c2>] mutex_lock_nested+0xc2/0xb60 kernel/locking/mutex.c:621
       [<ffffffff816c5f27>] ext4_register_li_request+0x87/0x7a0 fs/ext4/super.c:2934
       [<ffffffff816c79a8>] ext4_remount+0x1368/0x1bb0 fs/ext4/super.c:4911
       [<ffffffff8149ca28>] do_remount_sb2+0x428/0x7d0 fs/super.c:771
       [<ffffffff814fcf4e>] do_remount fs/namespace.c:2347 [inline]
       [<ffffffff814fcf4e>] do_mount+0x101e/0x2a10 fs/namespace.c:2860
       [<ffffffff814ff491>] SYSC_mount fs/namespace.c:3063 [inline]
       [<ffffffff814ff491>] SyS_mount+0x191/0x1c0 fs/namespace.c:3041
       [<ffffffff82715ee1>] entry_SYSCALL_64_fastpath+0x1e/0x9a

       [<ffffffff812037de>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff82710ee2>] down_read+0x42/0x60 kernel/locking/rwsem.c:22
       [<ffffffff8149c141>] iterate_supers+0xe1/0x260 fs/super.c:537
       [<ffffffff819aaf09>] selinux_complete_init+0x2f/0x31 security/selinux/hooks.c:6154
       [<ffffffff8199cb56>] security_load_policy+0x886/0x9b0 security/selinux/ss/services.c:2060
       [<ffffffff81972a81>] sel_write_load+0x191/0xfc0 security/selinux/selinuxfs.c:535
       [<ffffffff814916ec>] __vfs_write+0x11c/0x3e0 fs/read_write.c:489
       [<ffffffff8149339e>] vfs_write+0x17e/0x4e0 fs/read_write.c:538
       [<ffffffff814959d9>] SYSC_write fs/read_write.c:585 [inline]
       [<ffffffff814959d9>] SyS_write+0xd9/0x1c0 fs/read_write.c:577
       [<ffffffff82715ee1>] entry_SYSCALL_64_fastpath+0x1e/0x9a

       [<ffffffff812037de>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff827096c2>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
       [<ffffffff827096c2>] mutex_lock_nested+0xc2/0xb60 kernel/locking/mutex.c:621
       [<ffffffff81970567>] sel_commit_bools_write+0x87/0x250 security/selinux/selinuxfs.c:1142
       [<ffffffff814916ec>] __vfs_write+0x11c/0x3e0 fs/read_write.c:489
       [<ffffffff81491aba>] __kernel_write+0x10a/0x350 fs/read_write.c:511
       [<ffffffff8152d12d>] write_pipe_buf+0x15d/0x1f0 fs/splice.c:1074
       [<ffffffff8152dfc4>] splice_from_pipe_feed fs/splice.c:776 [inline]
       [<ffffffff8152dfc4>] __splice_from_pipe+0x364/0x790 fs/splice.c:901
       [<ffffffff81531089>] splice_from_pipe+0xf9/0x170 fs/splice.c:936
       [<ffffffff8153118c>] default_file_splice_write+0x3c/0x80 fs/splice.c:1086
       [<ffffffff81532251>] do_splice_from fs/splice.c:1128 [inline]
       [<ffffffff81532251>] do_splice fs/splice.c:1404 [inline]
       [<ffffffff81532251>] SYSC_splice fs/splice.c:1707 [inline]
       [<ffffffff81532251>] SyS_splice+0xde1/0x1430 fs/splice.c:1690
       [<ffffffff810060fe>] do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
       [<ffffffff810060fe>] do_fast_syscall_32+0x31e/0xa80 arch/x86/entry/common.c:397
       [<ffffffff82717690>] sysenter_flags_fixed+0xd/0x1a

       [<ffffffff812037de>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff827096c2>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
       [<ffffffff827096c2>] mutex_lock_nested+0xc2/0xb60 kernel/locking/mutex.c:621
       [<ffffffff814ad4dc>] __pipe_lock fs/pipe.c:86 [inline]
       [<ffffffff814ad4dc>] fifo_open+0x15c/0x9e0 fs/pipe.c:896
       [<ffffffff8148c4dd>] do_dentry_open+0x38d/0xbd0 fs/open.c:749
       [<ffffffff8148fc4a>] vfs_open+0x12a/0x210 fs/open.c:862
       [<ffffffff814bff30>] do_last fs/namei.c:3269 [inline]
       [<ffffffff814bff30>] path_openat+0xc10/0x3f10 fs/namei.c:3406
       [<ffffffff814c6ec7>] do_filp_open+0x197/0x270 fs/namei.c:3440
       [<ffffffff814a29bf>] do_open_execat+0x10f/0x6f0 fs/exec.c:800
       [<ffffffff814a7f71>] do_execveat_common.isra.14+0x6a1/0x1f00 fs/exec.c:1572
       [<ffffffff814aa208>] compat_do_execve fs/exec.c:1705 [inline]
       [<ffffffff814aa208>] C_SYSC_execve fs/exec.c:1780 [inline]
       [<ffffffff814aa208>] compat_SyS_execve+0x48/0x60 fs/exec.c:1776
       [<ffffffff810060fe>] do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
       [<ffffffff810060fe>] do_fast_syscall_32+0x31e/0xa80 arch/x86/entry/common.c:397
       [<ffffffff82717690>] sysenter_flags_fixed+0xd/0x1a

       [<ffffffff81200314>] check_prev_add kernel/locking/lockdep.c:1853 [inline]
       [<ffffffff81200314>] check_prevs_add kernel/locking/lockdep.c:1958 [inline]
       [<ffffffff81200314>] validate_chain kernel/locking/lockdep.c:2144 [inline]
       [<ffffffff81200314>] __lock_acquire+0x3cd4/0x5530 kernel/locking/lockdep.c:3213
       [<ffffffff812037de>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff8270ad92>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
       [<ffffffff8270ad92>] mutex_lock_killable_nested+0xd2/0xce0 kernel/locking/mutex.c:641
       [<ffffffff815e3bf4>] lock_trace+0x44/0xc0 fs/proc/base.c:448
       [<ffffffff815e4449>] proc_pid_syscall+0xa9/0x260 fs/proc/base.c:683
       [<ffffffff815dc09d>] proc_single_show+0xfd/0x170 fs/proc/base.c:805
       [<ffffffff815018d3>] traverse+0x363/0x920 fs/seq_file.c:124
       [<ffffffff81502f55>] seq_read+0xd05/0x12b0 fs/seq_file.c:195
       [<ffffffff81491e48>] do_loop_readv_writev+0x148/0x1e0 fs/read_write.c:680
       [<ffffffff81493c81>] do_readv_writev+0x581/0x6f0 fs/read_write.c:810
       [<ffffffff81493e68>] vfs_readv+0x78/0xb0 fs/read_write.c:834
       [<ffffffff8153060f>] kernel_readv fs/splice.c:586 [inline]
       [<ffffffff8153060f>] default_file_splice_read+0x50f/0x8f0 fs/splice.c:662
       [<ffffffff8152c4e7>] do_splice_to+0xf7/0x140 fs/splice.c:1154
       [<ffffffff8152c772>] splice_direct_to_actor+0x242/0x830 fs/splice.c:1226
       [<ffffffff8152cf03>] do_splice_direct+0x1a3/0x270 fs/splice.c:1337
       [<ffffffff814950a4>] do_sendfile+0x4e4/0xb80 fs/read_write.c:1227
       [<ffffffff814971f1>] C_SYSC_sendfile fs/read_write.c:1303 [inline]
       [<ffffffff814971f1>] compat_SyS_sendfile+0xd1/0x160 fs/read_write.c:1292
       [<ffffffff810060fe>] do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
       [<ffffffff810060fe>] do_fast_syscall_32+0x31e/0xa80 arch/x86/entry/common.c:397
       [<ffffffff82717690>] sysenter_flags_fixed+0xd/0x1a

other info that might help us debug this:

Chain exists of:
 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&p->lock);
                               lock(sb_writers#4);
                               lock(&p->lock);
  lock(&sig->cred_guard_mutex);

 *** DEADLOCK ***

2 locks held by syz-executor1/15118:
 #0:  (sb_writers#7){.+.+.+}, at: [<ffffffff8149545a>] file_start_write include/linux/fs.h:2543 [inline]
 #0:  (sb_writers#7){.+.+.+}, at: [<ffffffff8149545a>] do_sendfile+0x89a/0xb80 fs/read_write.c:1226
 #1:  (&p->lock){+.+.+.}, at: [<ffffffff8150232d>] seq_read+0xdd/0x12b0 fs/seq_file.c:178

stack backtrace:
CPU: 0 PID: 15118 Comm: syz-executor1 Not tainted 4.4.167+ #4
 0000000000000000 f2694832899421ac ffff8800bae56c00 ffffffff81aa62cd
 ffffffff83ab61d0 ffffffff83ab06b0 ffff8801c0ee4740 ffffffff83ab2000
 ffff8801c0ee5050 ffff8800bae56c50 ffffffff813a9559 ffff8801c0ee4740
Call Trace:
 [<ffffffff81aa62cd>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81aa62cd>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff813a9559>] print_circular_bug.cold.31+0x2f6/0x435 kernel/locking/lockdep.c:1226
 [<ffffffff81200314>] check_prev_add kernel/locking/lockdep.c:1853 [inline]
 [<ffffffff81200314>] check_prevs_add kernel/locking/lockdep.c:1958 [inline]
 [<ffffffff81200314>] validate_chain kernel/locking/lockdep.c:2144 [inline]
 [<ffffffff81200314>] __lock_acquire+0x3cd4/0x5530 kernel/locking/lockdep.c:3213
 [<ffffffff812037de>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
 [<ffffffff8270ad92>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
 [<ffffffff8270ad92>] mutex_lock_killable_nested+0xd2/0xce0 kernel/locking/mutex.c:641
 [<ffffffff815e3bf4>] lock_trace+0x44/0xc0 fs/proc/base.c:448
 [<ffffffff815e4449>] proc_pid_syscall+0xa9/0x260 fs/proc/base.c:683
 [<ffffffff815dc09d>] proc_single_show+0xfd/0x170 fs/proc/base.c:805
 [<ffffffff815018d3>] traverse+0x363/0x920 fs/seq_file.c:124
 [<ffffffff81502f55>] seq_read+0xd05/0x12b0 fs/seq_file.c:195
 [<ffffffff81491e48>] do_loop_readv_writev+0x148/0x1e0 fs/read_write.c:680
 [<ffffffff81493c81>] do_readv_writev+0x581/0x6f0 fs/read_write.c:810
 [<ffffffff81493e68>] vfs_readv+0x78/0xb0 fs/read_write.c:834
 [<ffffffff8153060f>] kernel_readv fs/splice.c:586 [inline]
 [<ffffffff8153060f>] default_file_splice_read+0x50f/0x8f0 fs/splice.c:662
 [<ffffffff8152c4e7>] do_splice_to+0xf7/0x140 fs/splice.c:1154
 [<ffffffff8152c772>] splice_direct_to_actor+0x242/0x830 fs/splice.c:1226
 [<ffffffff8152cf03>] do_splice_direct+0x1a3/0x270 fs/splice.c:1337
 [<ffffffff814950a4>] do_sendfile+0x4e4/0xb80 fs/read_write.c:1227
 [<ffffffff814971f1>] C_SYSC_sendfile fs/read_write.c:1303 [inline]
 [<ffffffff814971f1>] compat_SyS_sendfile+0xd1/0x160 fs/read_write.c:1292
 [<ffffffff810060fe>] do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
 [<ffffffff810060fe>] do_fast_syscall_32+0x31e/0xa80 arch/x86/entry/common.c:397
 [<ffffffff82717690>] sysenter_flags_fixed+0xd/0x1a
binder: 15151:15153 transaction failed 29201/-1, size 0-0 line 3022
binder: 15151:15153 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
binder: undelivered TRANSACTION_ERROR: 29201
binder: 15164:15166 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
binder: 15175:15176 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
binder: 15185:15189 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
audit_printk_skb: 54 callbacks suppressed
audit: type=1400 audit(1545002604.358:334): avc:  denied  { create } for  pid=15147 comm="syz-executor3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=0
audit: type=1400 audit(1545002604.428:335): avc:  denied  { call } for  pid=15201 comm="syz-executor4" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=0
binder: 15201:15202 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
audit: type=1400 audit(1545002604.588:336): avc:  denied  { call } for  pid=15212 comm="syz-executor4" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=0
binder: 15212:15213 transaction failed 29201/-1, size 0-0 line 3022
audit: type=1400 audit(1545002604.628:337): avc:  denied  { call } for  pid=15205 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=0
audit: type=1400 audit(1545002604.658:338): avc:  denied  { create } for  pid=15206 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=0
binder: 15205:15215 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
audit: type=1400 audit(1545002604.698:339): avc:  denied  { create } for  pid=15216 comm="syz-executor3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=0
audit: type=1400 audit(1545002604.828:340): avc:  denied  { call } for  pid=15235 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=0
binder: undelivered TRANSACTION_ERROR: 29201
binder: 15235:15236 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
audit: type=1400 audit(1545002605.448:341): avc:  denied  { call } for  pid=15256 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=0
binder: 15256:15260 transaction failed 29201/-1, size 0-0 line 3022
audit: type=1400 audit(1545002605.498:342): avc:  denied  { create } for  pid=15262 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=0
audit: type=1400 audit(1545002605.528:343): avc:  denied  { create } for  pid=15265 comm="syz-executor3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=0
binder: undelivered TRANSACTION_ERROR: 29201
binder: 15283:15286 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
binder: 15277:15292 transaction failed 29201/-1, size 0-0 line 3022
binder: 15294:15297 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
binder: undelivered TRANSACTION_ERROR: 29201
binder: 15306:15313 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
binder: 15311:15314 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
binder: 15350:15351 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
binder: 15365:15366 transaction failed 29201/-1, size 0-0 line 3022
binder: undelivered TRANSACTION_ERROR: 29201
binder: 15378:15379 ioctl c0306201 0 returned -14
audit_printk_skb: 60 callbacks suppressed
audit: type=1400 audit(1545002609.538:364): avc:  denied  { create } for  pid=15530 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=0
audit: type=1400 audit(1545002609.548:365): avc:  denied  { create } for  pid=15541 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=0
audit: type=1400 audit(1545002610.338:366): avc:  denied  { create } for  pid=15597 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=0
audit: type=1400 audit(1545002611.228:367): avc:  denied  { create } for  pid=15675 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=0
audit: type=1400 audit(1545002612.088:368): avc:  denied  { create } for  pid=15740 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=0