audit: type=1400 audit(1574839339.836:895): avc:  denied  { relabelto } for  pid=18154 comm="syz-executor.4" name="bus" dev="tmpfs" ino=71350 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:printer_device_t:s0 tclass=file permissive=0
======================================================
[ INFO: possible circular locking dependency detected ]
audit: type=1400 audit(1574839339.876:896): avc:  denied  { create } for  pid=18166 comm="syz-executor.2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=0
4.4.174+ #4 Not tainted
-------------------------------------------------------
syz-executor.3/18168 is trying to acquire lock:
 (&sig->cred_guard_mutex){+.+.+.}, at: [<ffffffff815eaa24>] lock_trace+0x44/0xc0 fs/proc/base.c:448

but task is already holding lock:
 (&p->lock){+.+.+.}, at: [<ffffffff81507c66>] seq_read+0xd6/0x1240 fs/seq_file.c:178

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

       [<ffffffff81205f6e>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff8270c191>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
       [<ffffffff8270c191>] mutex_lock_nested+0xc1/0xb80 kernel/locking/mutex.c:621
       [<ffffffff81507c66>] seq_read+0xd6/0x1240 fs/seq_file.c:178
       [<ffffffff81497088>] do_loop_readv_writev+0x148/0x1e0 fs/read_write.c:682
       [<ffffffff81498ee3>] do_readv_writev+0x573/0x6e0 fs/read_write.c:812
       [<ffffffff814990ca>] vfs_readv+0x7a/0xb0 fs/read_write.c:836
       [<ffffffff8153601c>] kernel_readv fs/splice.c:586 [inline]
       [<ffffffff8153601c>] default_file_splice_read+0x3ac/0x8b0 fs/splice.c:662
       [<ffffffff815321ff>] do_splice_to+0xff/0x160 fs/splice.c:1154
       [<ffffffff815324a9>] splice_direct_to_actor+0x249/0x850 fs/splice.c:1226
       [<ffffffff81532c55>] do_splice_direct+0x1a5/0x260 fs/splice.c:1337
       [<ffffffff8149a2fd>] do_sendfile+0x4ed/0xba0 fs/read_write.c:1229
       [<ffffffff8149c317>] SYSC_sendfile64 fs/read_write.c:1290 [inline]
       [<ffffffff8149c317>] SyS_sendfile64+0x137/0x150 fs/read_write.c:1276
       [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a

       [<ffffffff81205f6e>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff8149ea2f>] percpu_down_read include/linux/percpu-rwsem.h:26 [inline]
       [<ffffffff8149ea2f>] __sb_start_write+0x1af/0x310 fs/super.c:1239
       [<ffffffff816c3af4>] sb_start_write include/linux/fs.h:1517 [inline]
       [<ffffffff816c3af4>] ext4_run_li_request fs/ext4/super.c:2685 [inline]
       [<ffffffff816c3af4>] ext4_lazyinit_thread fs/ext4/super.c:2784 [inline]
       [<ffffffff816c3af4>] ext4_lazyinit_thread+0x1e4/0x7b0 fs/ext4/super.c:2760
       [<ffffffff811342c3>] kthread+0x273/0x310 kernel/kthread.c:211
       [<ffffffff82718fc5>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:537

       [<ffffffff81205f6e>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff8270c191>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
       [<ffffffff8270c191>] mutex_lock_nested+0xc1/0xb80 kernel/locking/mutex.c:621
       [<ffffffff816cdacd>] ext4_register_li_request+0x2fd/0x7d0 fs/ext4/super.c:2972
       [<ffffffff816cf306>] ext4_remount+0x1366/0x1b90 fs/ext4/super.c:4922
       [<ffffffff814a1ccb>] do_remount_sb2+0x41b/0x7a0 fs/super.c:781
       [<ffffffff815028ab>] do_remount fs/namespace.c:2347 [inline]
       [<ffffffff815028ab>] do_mount+0xfdb/0x2a40 fs/namespace.c:2860
       [<ffffffff81504d00>] SYSC_mount fs/namespace.c:3063 [inline]
       [<ffffffff81504d00>] SyS_mount+0x130/0x1d0 fs/namespace.c:3041
       [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a

       [<ffffffff81205f6e>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff8270c191>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
       [<ffffffff8270c191>] mutex_lock_nested+0xc1/0xb80 kernel/locking/mutex.c:621
       [<ffffffff816cd859>] ext4_register_li_request+0x89/0x7d0 fs/ext4/super.c:2945
audit: type=1400 audit(1574839340.166:897): avc:  denied  { relabelto } for  pid=18154 comm="syz-executor.4" name="bus" dev="tmpfs" ino=71350 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:printer_device_t:s0 tclass=file permissive=0
       [<ffffffff816cf306>] ext4_remount+0x1366/0x1b90 fs/ext4/super.c:4922
       [<ffffffff814a1ccb>] do_remount_sb2+0x41b/0x7a0 fs/super.c:781
       [<ffffffff815028ab>] do_remount fs/namespace.c:2347 [inline]
       [<ffffffff815028ab>] do_mount+0xfdb/0x2a40 fs/namespace.c:2860
       [<ffffffff81504d00>] SYSC_mount fs/namespace.c:3063 [inline]
       [<ffffffff81504d00>] SyS_mount+0x130/0x1d0 fs/namespace.c:3041
       [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a

       [<ffffffff81205f6e>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff827139a2>] down_read+0x42/0x60 kernel/locking/rwsem.c:22
       [<ffffffff814a1411>] iterate_supers+0xe1/0x250 fs/super.c:547
       [<ffffffff819b19f7>] selinux_complete_init+0x2f/0x31 security/selinux/hooks.c:6154
       [<ffffffff819a353d>] security_load_policy+0x69d/0x9c0 security/selinux/ss/services.c:2060
       [<ffffffff81979e55>] sel_write_load+0x175/0xf90 security/selinux/selinuxfs.c:535
       [<ffffffff81496916>] __vfs_write+0x116/0x3d0 fs/read_write.c:491
       [<ffffffff81498612>] vfs_write+0x182/0x4e0 fs/read_write.c:540
       [<ffffffff8149ac4c>] SYSC_write fs/read_write.c:587 [inline]
       [<ffffffff8149ac4c>] SyS_write+0xdc/0x1c0 fs/read_write.c:579
       [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a

       [<ffffffff81205f6e>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff8270c191>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
       [<ffffffff8270c191>] mutex_lock_nested+0xc1/0xb80 kernel/locking/mutex.c:621
       [<ffffffff81977a39>] sel_commit_bools_write+0x89/0x260 security/selinux/selinuxfs.c:1142
       [<ffffffff81496916>] __vfs_write+0x116/0x3d0 fs/read_write.c:491
       [<ffffffff81496ce2>] __kernel_write+0x112/0x370 fs/read_write.c:513
       [<ffffffff81532e6d>] write_pipe_buf+0x15d/0x1f0 fs/splice.c:1074
       [<ffffffff81533b6e>] splice_from_pipe_feed fs/splice.c:776 [inline]
       [<ffffffff81533b6e>] __splice_from_pipe+0x37e/0x7a0 fs/splice.c:901
       [<ffffffff81536be8>] splice_from_pipe+0x108/0x170 fs/splice.c:936
       [<ffffffff81536cdc>] default_file_splice_write+0x3c/0x80 fs/splice.c:1086
       [<ffffffff81537d31>] do_splice_from fs/splice.c:1128 [inline]
       [<ffffffff81537d31>] do_splice fs/splice.c:1404 [inline]
       [<ffffffff81537d31>] SYSC_splice fs/splice.c:1707 [inline]
       [<ffffffff81537d31>] SyS_splice+0xd71/0x13a0 fs/splice.c:1690
       [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a

       [<ffffffff81205f6e>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff8270c191>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
       [<ffffffff8270c191>] mutex_lock_nested+0xc1/0xb80 kernel/locking/mutex.c:621
       [<ffffffff814b28fd>] __pipe_lock fs/pipe.c:86 [inline]
       [<ffffffff814b28fd>] fifo_open+0x15d/0xa00 fs/pipe.c:896
       [<ffffffff8149154f>] do_dentry_open+0x38f/0xbd0 fs/open.c:749
       [<ffffffff81494d3b>] vfs_open+0x10b/0x210 fs/open.c:862
       [<ffffffff814c5ddf>] do_last fs/namei.c:3269 [inline]
       [<ffffffff814c5ddf>] path_openat+0x136f/0x4470 fs/namei.c:3406
       [<ffffffff814ccab1>] do_filp_open+0x1a1/0x270 fs/namei.c:3440
       [<ffffffff814a7c8c>] do_open_execat+0x10c/0x6e0 fs/exec.c:805
       [<ffffffff814ad306>] do_execveat_common.isra.0+0x6f6/0x1e90 fs/exec.c:1577
       [<ffffffff814af422>] do_execve fs/exec.c:1683 [inline]
       [<ffffffff814af422>] SYSC_execve fs/exec.c:1764 [inline]
       [<ffffffff814af422>] SyS_execve+0x42/0x50 fs/exec.c:1759
       [<ffffffff82718ef5>] return_from_execve+0x0/0x23

       [<ffffffff81202d86>] check_prev_add kernel/locking/lockdep.c:1853 [inline]
       [<ffffffff81202d86>] check_prevs_add kernel/locking/lockdep.c:1958 [inline]
       [<ffffffff81202d86>] validate_chain kernel/locking/lockdep.c:2144 [inline]
       [<ffffffff81202d86>] __lock_acquire+0x37d6/0x4f50 kernel/locking/lockdep.c:3213
       [<ffffffff81205f6e>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
       [<ffffffff8270d8a2>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
       [<ffffffff8270d8a2>] mutex_lock_killable_nested+0xd2/0xd00 kernel/locking/mutex.c:641
       [<ffffffff815eaa24>] lock_trace+0x44/0xc0 fs/proc/base.c:448
       [<ffffffff815ead4c>] proc_pid_personality+0x1c/0xc0 fs/proc/base.c:2854
       [<ffffffff815e2e66>] proc_single_show+0xf6/0x160 fs/proc/base.c:805
       [<ffffffff8150805d>] seq_read+0x4cd/0x1240 fs/seq_file.c:240
       [<ffffffff81497088>] do_loop_readv_writev+0x148/0x1e0 fs/read_write.c:682
       [<ffffffff81498ee3>] do_readv_writev+0x573/0x6e0 fs/read_write.c:812
       [<ffffffff814990ca>] vfs_readv+0x7a/0xb0 fs/read_write.c:836
       [<ffffffff8153601c>] kernel_readv fs/splice.c:586 [inline]
       [<ffffffff8153601c>] default_file_splice_read+0x3ac/0x8b0 fs/splice.c:662
       [<ffffffff815321ff>] do_splice_to+0xff/0x160 fs/splice.c:1154
       [<ffffffff815324a9>] splice_direct_to_actor+0x249/0x850 fs/splice.c:1226
       [<ffffffff81532c55>] do_splice_direct+0x1a5/0x260 fs/splice.c:1337
       [<ffffffff8149a2fd>] do_sendfile+0x4ed/0xba0 fs/read_write.c:1229
       [<ffffffff8149c317>] SYSC_sendfile64 fs/read_write.c:1290 [inline]
       [<ffffffff8149c317>] SyS_sendfile64+0x137/0x150 fs/read_write.c:1276
       [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a

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-executor.3/18168:
 #0:  (sb_writers#7){.+.+.+}, at: [<ffffffff8149a6b6>] file_start_write include/linux/fs.h:2543 [inline]
 #0:  (sb_writers#7){.+.+.+}, at: [<ffffffff8149a6b6>] do_sendfile+0x8a6/0xba0 fs/read_write.c:1228
 #1:  (&p->lock){+.+.+.}, at: [<ffffffff81507c66>] seq_read+0xd6/0x1240 fs/seq_file.c:178

stack backtrace:
CPU: 0 PID: 18168 Comm: syz-executor.3 Not tainted 4.4.174+ #4
 0000000000000000 6a2b72957720eee0 ffff880099fe6f10 ffffffff81aad1a1
 ffffffff84057a80 ffff8800b63caf80 ffffffff83ab6860 ffffffff83ab81b0
 ffffffff83abc380 ffff880099fe6f60 ffffffff813abcda ffffffff83e2a880
Call Trace:
 [<ffffffff81aad1a1>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81aad1a1>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<ffffffff813abcda>] print_circular_bug.cold+0x2f7/0x44e kernel/locking/lockdep.c:1226
 [<ffffffff81202d86>] check_prev_add kernel/locking/lockdep.c:1853 [inline]
 [<ffffffff81202d86>] check_prevs_add kernel/locking/lockdep.c:1958 [inline]
 [<ffffffff81202d86>] validate_chain kernel/locking/lockdep.c:2144 [inline]
 [<ffffffff81202d86>] __lock_acquire+0x37d6/0x4f50 kernel/locking/lockdep.c:3213
 [<ffffffff81205f6e>] lock_acquire+0x15e/0x450 kernel/locking/lockdep.c:3592
 [<ffffffff8270d8a2>] __mutex_lock_common kernel/locking/mutex.c:521 [inline]
 [<ffffffff8270d8a2>] mutex_lock_killable_nested+0xd2/0xd00 kernel/locking/mutex.c:641
 [<ffffffff815eaa24>] lock_trace+0x44/0xc0 fs/proc/base.c:448
 [<ffffffff815ead4c>] proc_pid_personality+0x1c/0xc0 fs/proc/base.c:2854
 [<ffffffff815e2e66>] proc_single_show+0xf6/0x160 fs/proc/base.c:805
 [<ffffffff8150805d>] seq_read+0x4cd/0x1240 fs/seq_file.c:240
 [<ffffffff81497088>] do_loop_readv_writev+0x148/0x1e0 fs/read_write.c:682
 [<ffffffff81498ee3>] do_readv_writev+0x573/0x6e0 fs/read_write.c:812
 [<ffffffff814990ca>] vfs_readv+0x7a/0xb0 fs/read_write.c:836
 [<ffffffff8153601c>] kernel_readv fs/splice.c:586 [inline]
 [<ffffffff8153601c>] default_file_splice_read+0x3ac/0x8b0 fs/splice.c:662
 [<ffffffff815321ff>] do_splice_to+0xff/0x160 fs/splice.c:1154
 [<ffffffff815324a9>] splice_direct_to_actor+0x249/0x850 fs/splice.c:1226
 [<ffffffff81532c55>] do_splice_direct+0x1a5/0x260 fs/splice.c:1337
 [<ffffffff8149a2fd>] do_sendfile+0x4ed/0xba0 fs/read_write.c:1229
 [<ffffffff8149c317>] SYSC_sendfile64 fs/read_write.c:1290 [inline]
 [<ffffffff8149c317>] SyS_sendfile64+0x137/0x150 fs/read_write.c:1276
 [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a
audit: type=1400 audit(1574839341.236:898): avc:  denied  { relabelto } for  pid=18184 comm="syz-executor.0" name="bus" dev="tmpfs" ino=71389 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:printer_device_t:s0 tclass=file permissive=0
audit: type=1400 audit(1574839341.266:899): avc:  denied  { relabelto } for  pid=18183 comm="syz-executor.4" name="bus" dev="tmpfs" ino=71394 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:printer_device_t:s0 tclass=file permissive=0
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=12152 sclass=netlink_route_socket
vmalloc: allocation failure: 17179869180 bytes
syz-executor.5: page allocation failure: order:0, mode:0x24000c2
CPU: 1 PID: 18212 Comm: syz-executor.5 Not tainted 4.4.174+ #4
 0000000000000000 b51384a485e5f88f ffff8801b31f7818 ffffffff81aad1a1[  500.447883] audit_printk_skb: 9 callbacks suppressed
audit: type=1400 audit(1574839342.046:903): avc:  denied  { create } for  pid=18207 comm="syz-executor.0" 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
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=12152 sclass=netlink_route_socket
audit: type=1400 audit(1574839342.046:904): avc:  denied  { create } for  pid=18182 comm="syz-executor.2" 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

 1ffff1003663ef06 ffff8800b7732f80 00000000024000c2 0000000000000000
 ffffffff82895080 ffff8801b31f7928 ffffffff8148c0cb 0000000000000001
Call Trace:
 [<ffffffff81aad1a1>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81aad1a1>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<ffffffff8148c0cb>] warn_alloc_failed.cold+0x78/0x99 mm/page_alloc.c:2757
 [<ffffffff8145fb65>] __vmalloc_node_range mm/vmalloc.c:1693 [inline]
 [<ffffffff8145fb65>] __vmalloc_node_range+0x365/0x650 mm/vmalloc.c:1654
 [<ffffffff8146031c>] __vmalloc_node mm/vmalloc.c:1716 [inline]
 [<ffffffff8146031c>] __vmalloc_node_flags mm/vmalloc.c:1730 [inline]
 [<ffffffff8146031c>] vmalloc+0x5c/0x70 mm/vmalloc.c:1745
 [<ffffffff8236da74>] xt_alloc_entry_offsets+0x44/0x60 net/netfilter/x_tables.c:757
 [<ffffffff825299a7>] translate_table+0x2c7/0x1c00 net/ipv4/netfilter/arp_tables.c:654
 [<ffffffff8252febd>] do_replace.isra.0+0x1cd/0x470 net/ipv4/netfilter/arp_tables.c:1116
 [<ffffffff825303b2>] do_arpt_set_ctl+0x102/0x150 net/ipv4/netfilter/arp_tables.c:1620
 [<ffffffff822fcfad>] nf_sockopt net/netfilter/nf_sockopt.c:105 [inline]
 [<ffffffff822fcfad>] nf_setsockopt+0x6d/0xc0 net/netfilter/nf_sockopt.c:114
 [<ffffffff823da69a>] ip_setsockopt net/ipv4/ip_sockglue.c:1225 [inline]
 [<ffffffff823da69a>] ip_setsockopt+0x8a/0xa0 net/ipv4/ip_sockglue.c:1210
 [<ffffffff823f782a>] tcp_setsockopt net/ipv4/tcp.c:2643 [inline]
 [<ffffffff823f782a>] tcp_setsockopt+0x8a/0xe0 net/ipv4/tcp.c:2637
 [<ffffffff821def2a>] sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2663
 [<ffffffff821dcb59>] SYSC_setsockopt net/socket.c:1780 [inline]
 [<ffffffff821dcb59>] SyS_setsockopt+0x159/0x240 net/socket.c:1759
 [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a
Mem-Info:
active_anon:309733 inactive_anon:6394 isolated_anon:0
 active_file:6260 inactive_file:27121 isolated_file:0
 unevictable:0 dirty:225 writeback:1 unstable:0
 slab_reclaimable:6975 slab_unreclaimable:65997
 mapped:63302 shmem:9380 pagetables:6849 bounce:0
 free:1146522 free_pcp:349 free_cma:0
DMA32 free:2091316kB min:4696kB low:5868kB high:7044kB active_anon:573408kB inactive_anon:11116kB active_file:10908kB inactive_file:48788kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3145324kB managed:3021976kB mlocked:0kB dirty:484kB writeback:4kB mapped:116028kB shmem:16632kB slab_reclaimable:13036kB slab_unreclaimable:120432kB kernel_stack:6272kB pagetables:12368kB unstable:0kB bounce:0kB free_pcp:824kB local_pcp:500kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 3504 3504
Normal free:2494616kB min:5580kB low:6972kB high:8368kB active_anon:665724kB inactive_anon:14460kB active_file:14132kB inactive_file:59696kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4718592kB managed:3588764kB mlocked:0kB dirty:416kB writeback:0kB mapped:137180kB shmem:20888kB slab_reclaimable:14864kB slab_unreclaimable:143556kB kernel_stack:7520kB pagetables:15028kB unstable:0kB bounce:0kB free_pcp:744kB local_pcp:296kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
DMA32: 259*4kB (UE) 8*8kB (U) 3*16kB (UME) 130*32kB (UME) 82*64kB (UME) 18*128kB (UE) 6*256kB (U) 9*512kB (U) 4*1024kB (UM) 4*2048kB (UME) 503*4096kB (M) = 2091580kB
Normal: 296*4kB (UME) 9*8kB (U) 3*16kB (UE) 25*32kB (UE) 59*64kB (UE) 26*128kB (UME) 27*256kB (UME) 3*512kB (UM) 3*1024kB (UM) 2*2048kB (UM) 603*4096kB (UM) = 2494712kB
42763 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
313294 pages reserved
vmalloc: allocation failure: 17179869180 bytes
syz-executor.5: page allocation failure: order:0, mode:0x24000c2
CPU: 1 PID: 18245 Comm: syz-executor.5 Not tainted 4.4.174+ #4
 0000000000000000 3bb43093e75f8d5b ffff88019aa37818 ffffffff81aad1a1
 1ffff10033546f06 ffff8800a4bfc740 00000000024000c2 0000000000000000
 ffffffff82895080 ffff88019aa37928 ffffffff8148c0cb 0000000000000001
Call Trace:
 [<ffffffff81aad1a1>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81aad1a1>] dump_stack+0xc1/0x120 lib/dump_stack.c:51
 [<ffffffff8148c0cb>] warn_alloc_failed.cold+0x78/0x99 mm/page_alloc.c:2757
 [<ffffffff8145fb65>] __vmalloc_node_range mm/vmalloc.c:1693 [inline]
 [<ffffffff8145fb65>] __vmalloc_node_range+0x365/0x650 mm/vmalloc.c:1654
 [<ffffffff8146031c>] __vmalloc_node mm/vmalloc.c:1716 [inline]
 [<ffffffff8146031c>] __vmalloc_node_flags mm/vmalloc.c:1730 [inline]
 [<ffffffff8146031c>] vmalloc+0x5c/0x70 mm/vmalloc.c:1745
audit: type=1400 audit(1574839342.746:905): avc:  denied  { create } for  pid=18207 comm="syz-executor.0" 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
 [<ffffffff8236da74>] xt_alloc_entry_offsets+0x44/0x60 net/netfilter/x_tables.c:757
 [<ffffffff825299a7>] translate_table+0x2c7/0x1c00 net/ipv4/netfilter/arp_tables.c:654
 [<ffffffff8252febd>] do_replace.isra.0+0x1cd/0x470 net/ipv4/netfilter/arp_tables.c:1116
 [<ffffffff825303b2>] do_arpt_set_ctl+0x102/0x150 net/ipv4/netfilter/arp_tables.c:1620
 [<ffffffff822fcfad>] nf_sockopt net/netfilter/nf_sockopt.c:105 [inline]
 [<ffffffff822fcfad>] nf_setsockopt+0x6d/0xc0 net/netfilter/nf_sockopt.c:114
 [<ffffffff823da69a>] ip_setsockopt net/ipv4/ip_sockglue.c:1225 [inline]
 [<ffffffff823da69a>] ip_setsockopt+0x8a/0xa0 net/ipv4/ip_sockglue.c:1210
 [<ffffffff823f782a>] tcp_setsockopt net/ipv4/tcp.c:2643 [inline]
 [<ffffffff823f782a>] tcp_setsockopt+0x8a/0xe0 net/ipv4/tcp.c:2637
 [<ffffffff821def2a>] sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2663
 [<ffffffff821dcb59>] SYSC_setsockopt net/socket.c:1780 [inline]
 [<ffffffff821dcb59>] SyS_setsockopt+0x159/0x240 net/socket.c:1759
 [<ffffffff82718ba1>] entry_SYSCALL_64_fastpath+0x1e/0x9a
Mem-Info:
active_anon:305633 inactive_anon:6394 isolated_anon:0
 active_file:6260 inactive_file:27121 isolated_file:0
 unevictable:0 dirty:225 writeback:1 unstable:0
 slab_reclaimable:6975 slab_unreclaimable:66390
 mapped:63302 shmem:9380 pagetables:6849 bounce:0
 free:1150246 free_pcp:518 free_cma:0
DMA32 free:2098800kB min:4696kB low:5868kB high:7044kB active_anon:565108kB inactive_anon:11116kB active_file:10908kB inactive_file:48788kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3145324kB managed:3021976kB mlocked:0kB dirty:484kB writeback:4kB mapped:116028kB shmem:16632kB slab_reclaimable:13036kB slab_unreclaimable:120984kB kernel_stack:6272kB pagetables:12516kB unstable:0kB bounce:0kB free_pcp:1064kB local_pcp:736kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=12152 sclass=netlink_route_socket
lowmem_reserve[]: 0 3504 3504
Normal free:2510272kB min:5580kB low:6972kB high:8368kB active_anon:648624kB inactive_anon:14460kB active_file:14132kB inactive_file:59696kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4718592kB managed:3588764kB mlocked:0kB dirty:416kB writeback:0kB mapped:137180kB shmem:20888kB slab_reclaimable:14864kB slab_unreclaimable:144552kB kernel_stack:7520kB pagetables:14880kB unstable:0kB bounce:0kB free_pcp:1116kB local_pcp:496kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
DMA32: 226*4kB (UME) 365*8kB (UM) 223*16kB (ME) 285*32kB (UME) 122*64kB (UME) 22*128kB (UME) 8*256kB (UM) 9*512kB (U) 4*1024kB (UM) 4*2048kB (UME) 503*4096kB (M) = 2106368kB
Normal: 220*4kB (UME) 266*8kB (ME) 269*16kB (UME) 206*32kB (UME) 102*64kB (UME) 34*128kB (UME) 27*256kB (UME) 3*512kB (UM) 3*1024kB (UM) 2*2048kB (UM) 603*4096kB (UM) = 2510288kB
42763 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap  = 0kB
Total swap = 0kB
1965979 pages RAM
0 pages HighMem/MovableOnly
313294 pages reserved
audit: type=1400 audit(1574839343.546:906): avc:  denied  { create } for  pid=18255 comm="syz-executor.2" 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
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=12152 sclass=netlink_route_socket
audit: type=1400 audit(1574839344.156:907): avc:  denied  { create } for  pid=18300 comm="syz-executor.2" 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
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=12152 sclass=netlink_route_socket
audit: type=1400 audit(1574839345.026:908): avc:  denied  { create } for  pid=18339 comm="syz-executor.2" 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
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=12152 sclass=netlink_route_socket
audit: type=1400 audit(1574839345.896:909): avc:  denied  { create } for  pid=18380 comm="syz-executor.2" 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
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=12152 sclass=netlink_route_socket
audit: type=1400 audit(1574839346.756:910): avc:  denied  { create } for  pid=18421 comm="syz-executor.2" 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
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=12152 sclass=netlink_route_socket
audit: type=1400 audit(1574839347.576:911): avc:  denied  { create } for  pid=18465 comm="syz-executor.2" 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
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=12152 sclass=netlink_route_socket
audit: type=1400 audit(1574839348.486:912): avc:  denied  { create } for  pid=18508 comm="syz-executor.2" 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
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=12152 sclass=netlink_route_socket
audit: type=1400 audit(1574839349.296:913): avc:  denied  { create } for  pid=18560 comm="syz-executor.2" 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