Warning: Permanently added '10.128.0.92' (ECDSA) to the list of known hosts.
2018/12/11 20:16:54 parsed 1 programs
2018/12/11 20:16:57 executed programs: 0
[  195.615874] audit: type=1400 audit(1544559422.463:5): avc:  denied  { associate } for  pid=2122 comm="syz-executor5" name="syz5" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1
2018/12/11 20:17:02 executed programs: 6
2018/12/11 20:17:07 executed programs: 462
2018/12/11 20:17:12 executed programs: 916
2018/12/11 20:17:17 executed programs: 1357
[  214.442920] 
[  214.444592] ======================================================
[  214.450894] [ INFO: possible circular locking dependency detected ]
[  214.457301] 4.9.144+ #79 Not tainted
[  214.460990] -------------------------------------------------------
[  214.467368] syz-executor4/9747 is trying to acquire lock:
[  214.472877]  (&p->lock){+.+.+.}, at: [<ffffffff8158108d>] seq_read+0xdd/0x12d0

[  214.480589] but task is already holding lock:
[  214.485230]  (&pipe->mutex/1){+.+.+.}, at: [<ffffffff81523e9e>] pipe_lock+0x5e/0x70

[  214.493506] which lock already depends on the new lock.
[  214.493506] 
[  214.500508] 
[  214.500508] the existing dependency chain (in reverse order) is:
[  214.508115] 
-> #2 (&pipe->mutex/1){+.+.+.}:
[  214.513288]        lock_acquire+0x130/0x3e0
[  214.517605]        mutex_lock_nested+0xc0/0x900
[  214.522271]        fifo_open+0x15c/0x9e0
[  214.526324]        do_dentry_open+0x3ef/0xc90
[  214.530809]        vfs_open+0x11c/0x210
[  214.534761]        path_openat+0x661/0x2d90
[  214.539058]        do_filp_open+0x197/0x270
[  214.543354]        do_open_execat+0x10f/0x640
[  214.547832]        do_execveat_common.isra.14+0x687/0x1ed0
[  214.553439]        SyS_execve+0x42/0x50
[  214.557405]        do_syscall_64+0x19f/0x550
[  214.561803]        entry_SYSCALL_64_after_swapgs+0x5d/0xdb
[  214.567402] 
-> #1 (&sig->cred_guard_mutex){+.+.+.}:
[  214.573137]        lock_acquire+0x130/0x3e0
[  214.577456]        mutex_lock_killable_nested+0xcc/0x9f0
[  214.582898]        do_io_accounting+0x1fb/0x7e0
[  214.587547]        proc_tgid_io_accounting+0x22/0x30
[  214.592629]        proc_single_show+0xfd/0x170
[  214.597190]        traverse+0x363/0x920
[  214.601144]        seq_read+0xd1b/0x12d0
[  214.605184]        do_loop_readv_writev.part.1+0xd5/0x280
[  214.610720]        do_readv_writev+0x56e/0x7b0
[  214.615300]        vfs_readv+0x84/0xc0
[  214.619174]        do_preadv+0x197/0x240
[  214.623214]        SyS_preadv+0x30/0x40
[  214.627173]        do_syscall_64+0x19f/0x550
[  214.631561]        entry_SYSCALL_64_after_swapgs+0x5d/0xdb
[  214.637173] 
-> #0 (&p->lock){+.+.+.}:
[  214.641632]        __lock_acquire+0x3189/0x4a10
[  214.646278]        lock_acquire+0x130/0x3e0
[  214.650579]        mutex_lock_nested+0xc0/0x900
[  214.655311]        seq_read+0xdd/0x12d0
[  214.659264]        proc_reg_read+0xfd/0x180
[  214.663560]        do_loop_readv_writev.part.1+0xd5/0x280
[  214.669073]        do_readv_writev+0x56e/0x7b0
[  214.673639]        vfs_readv+0x84/0xc0
[  214.677511]        default_file_splice_read+0x451/0x7f0
[  214.682856]        do_splice_to+0x10c/0x170
[  214.687160]        SyS_splice+0x10d2/0x14d0
[  214.691459]        do_syscall_64+0x19f/0x550
[  214.695856]        entry_SYSCALL_64_after_swapgs+0x5d/0xdb
[  214.701453] 
[  214.701453] other info that might help us debug this:
[  214.701453] 
[  214.709572] Chain exists of:
  &p->lock --> &sig->cred_guard_mutex --> &pipe->mutex/1

[  214.718659]  Possible unsafe locking scenario:
[  214.718659] 
[  214.724697]        CPU0                    CPU1
[  214.729346]        ----                    ----
[  214.733992]   lock(&pipe->mutex/1);
[  214.737976]                                lock(&sig->cred_guard_mutex);
[  214.745029]                                lock(&pipe->mutex/1);
[  214.751511]   lock(&p->lock);
[  214.754849] 
[  214.754849]  *** DEADLOCK ***
[  214.754849] 
[  214.760884] 1 lock held by syz-executor4/9747:
[  214.765437]  #0:  (&pipe->mutex/1){+.+.+.}, at: [<ffffffff81523e9e>] pipe_lock+0x5e/0x70
[  214.774378] 
[  214.774378] stack backtrace:
[  214.778852] CPU: 1 PID: 9747 Comm: syz-executor4 Not tainted 4.9.144+ #79
[  214.785753]  ffff8801ca34f278 ffffffff81b43b89 ffffffff83ca4fd0 ffffffff83cac290
[  214.793750]  ffffffff83ca6fe0 ffff8801cbba08d0 ffff8801cbba0000 ffff8801ca34f2c0
[  214.801775]  ffffffff813ff290 0000000000000001 00000000cbba08b0 0000000000000001
[  214.809785] Call Trace:
[  214.812355]  [<ffffffff81b43b89>] dump_stack+0xc1/0x128
[  214.817711]  [<ffffffff813ff290>] print_circular_bug.cold.36+0x2f7/0x432
[  214.824531]  [<ffffffff8120a699>] __lock_acquire+0x3189/0x4a10
[  214.830515]  [<ffffffff810ac9dd>] ? unwind_next_frame+0x7d/0xd0
[  214.836551]  [<ffffffff81207510>] ? trace_hardirqs_on+0x10/0x10
[  214.842588]  [<ffffffff812040e9>] ? add_lock_to_list.isra.9.constprop.25+0x149/0x280
[  214.850495]  [<ffffffff8120ca30>] lock_acquire+0x130/0x3e0
[  214.856113]  [<ffffffff8158108d>] ? seq_read+0xdd/0x12d0
[  214.861545]  [<ffffffff8158108d>] ? seq_read+0xdd/0x12d0
[  214.866975]  [<ffffffff8280c6b0>] mutex_lock_nested+0xc0/0x900
[  214.872941]  [<ffffffff8158108d>] ? seq_read+0xdd/0x12d0
[  214.878377]  [<ffffffff8280c5f0>] ? mutex_trylock+0x3e0/0x3e0
[  214.884263]  [<ffffffff81206f07>] ? mark_held_locks+0xc7/0x130
[  214.890219]  [<ffffffff814267a3>] ? get_page_from_freelist+0xda3/0x1d80
[  214.896953]  [<ffffffff814f2315>] ? kasan_unpoison_shadow+0x35/0x50
[  214.903335]  [<ffffffff8158108d>] seq_read+0xdd/0x12d0
[  214.908589]  [<ffffffff815e1a04>] ? fsnotify+0x114/0x1100
[  214.914111]  [<ffffffff81580fb0>] ? seq_lseek+0x3c0/0x3c0
[  214.919636]  [<ffffffff815e18f0>] ? __fsnotify_inode_delete+0x30/0x30
[  214.926195]  [<ffffffff8165c89d>] proc_reg_read+0xfd/0x180
[  214.931799]  [<ffffffff81580fb0>] ? seq_lseek+0x3c0/0x3c0
[  214.937322]  [<ffffffff8150a075>] do_loop_readv_writev.part.1+0xd5/0x280
[  214.944141]  [<ffffffff8150b71e>] do_readv_writev+0x56e/0x7b0
[  214.950006]  [<ffffffff8150b1b0>] ? vfs_write+0x520/0x520
[  214.955521]  [<ffffffff814f2315>] ? kasan_unpoison_shadow+0x35/0x50
[  214.961907]  [<ffffffff81b817f2>] ? push_pipe+0x3e2/0x770
[  214.967424]  [<ffffffff81b88f5e>] ? iov_iter_get_pages_alloc+0x2be/0xee0
[  214.974244]  [<ffffffff8150b9e4>] vfs_readv+0x84/0xc0
[  214.979415]  [<ffffffff815acb21>] default_file_splice_read+0x451/0x7f0
[  214.986064]  [<ffffffff815ac6d0>] ? do_splice_direct+0x270/0x270
[  214.992187]  [<ffffffff81207510>] ? trace_hardirqs_on+0x10/0x10
[  214.998228]  [<ffffffff814f2c0c>] ? kasan_slab_free+0xac/0x190
[  215.004181]  [<ffffffff814ef53e>] ? kmem_cache_free+0xbe/0x310
[  215.010138]  [<ffffffff81207510>] ? trace_hardirqs_on+0x10/0x10
[  215.016178]  [<ffffffff815e18f0>] ? __fsnotify_inode_delete+0x30/0x30
[  215.022752]  [<ffffffff815e2cf0>] ? __fsnotify_update_child_dentry_flags.part.0+0x300/0x300
[  215.031227]  [<ffffffff819eed39>] ? avc_policy_seqno+0x9/0x20
[  215.037098]  [<ffffffff81a04042>] ? selinux_file_permission+0x82/0x470
[  215.043743]  [<ffffffff819e607f>] ? security_file_permission+0x8f/0x1e0
[  215.050473]  [<ffffffff8150a745>] ? rw_verify_area+0xe5/0x2a0
[  215.056335]  [<ffffffff815ac6d0>] ? do_splice_direct+0x270/0x270
[  215.062460]  [<ffffffff815abc1c>] do_splice_to+0x10c/0x170
[  215.068062]  [<ffffffff815b1172>] SyS_splice+0x10d2/0x14d0
[  215.073662]  [<ffffffff81495314>] ? __might_fault+0x114/0x1d0
[  215.079523]  [<ffffffff815b00a0>] ? compat_SyS_vmsplice+0x160/0x160
[  215.085905]  [<ffffffff81005598>] ? do_syscall_64+0x48/0x550
[  215.091701]  [<ffffffff815b00a0>] ? compat_SyS_vmsplice+0x160/0x160
[  215.098086]  [<ffffffff810056ef>] do_syscall_64+0x19f/0x550
[  215.103785]  [<ffffffff82818cd3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
2018/12/11 20:17:22 executed programs: 1735
2018/12/11 20:17:27 executed programs: 2260