[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   15.910532] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   22.114201] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   22.437315] random: sshd: uninitialized urandom read (32 bytes read, 40 bits of entropy available)
[   23.066693] random: sshd: uninitialized urandom read (32 bytes read, 60 bits of entropy available)
[   33.314045] random: sshd: uninitialized urandom read (32 bytes read, 70 bits of entropy available)
Warning: Permanently added '10.128.15.201' (ECDSA) to the list of known hosts.
[   38.690708] random: sshd: uninitialized urandom read (32 bytes read, 76 bits of entropy available)
executing program
executing program
[   38.808416] 
[   38.810056] =====================================
[   38.814861] [ BUG: bad unlock balance detected! ]
[   38.819670] 4.4.107-g610c835 #12 Not tainted
[   38.824043] -------------------------------------
[   38.828851] syzkaller811884/3329 is trying to release lock (mrt_lock) at:
[   38.835987] [<ffffffff833c77d4>] ipmr_mfc_seq_stop+0xe4/0x140
[   38.841834] but there are no more locks to release!
[   38.846818] 
[   38.846818] other info that might help us debug this:
[   38.853450] 1 lock held by syzkaller811884/3329:
[   38.858170]  #0:  (&p->lock){+.+.+.}, at: [<ffffffff8158c38d>] seq_read+0xdd/0x1270
[   38.866500] 
[   38.866500] stack backtrace:
[   38.870974] CPU: 0 PID: 3329 Comm: syzkaller811884 Not tainted 4.4.107-g610c835 #12
[   38.878731] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   38.888051]  0000000000000000 30aad846228b6b50 ffff8800b4877910 ffffffff81d0457d
[   38.896000]  ffffffff8476ab98 ffff8801d09297c0 ffffffff833c77d4 ffffffff8476ab98
[   38.903970]  ffff8801d092a008 ffff8800b4877940 ffffffff812301a4 dffffc0000000000
[   38.911918] Call Trace:
[   38.914470]  [<ffffffff81d0457d>] dump_stack+0xc1/0x124
[   38.919802]  [<ffffffff833c77d4>] ? ipmr_mfc_seq_stop+0xe4/0x140
[   38.925911]  [<ffffffff812301a4>] print_unlock_imbalance_bug+0x174/0x1a0
[   38.932726]  [<ffffffff8123b04a>] lock_release+0x72a/0xc10
[   38.938326]  [<ffffffff814fafd5>] ? memcpy+0x45/0x50
[   38.943397]  [<ffffffff833c77d4>] ? ipmr_mfc_seq_stop+0xe4/0x140
[   38.949507]  [<ffffffff8377366a>] _raw_read_unlock+0x1a/0x50
[   38.955269]  [<ffffffff833c77d4>] ipmr_mfc_seq_stop+0xe4/0x140
[   38.961294]  [<ffffffff8158b997>] traverse+0x3a7/0x900
[   38.966536]  [<ffffffff8158b5f0>] ? seq_buf_alloc+0x80/0x80
[   38.972213]  [<ffffffff8158ca9a>] seq_read+0x7ea/0x1270
[   38.977544]  [<ffffffff8158c2b0>] ? seq_lseek+0x3c0/0x3c0
[   38.983046]  [<ffffffff8158c2b0>] ? seq_lseek+0x3c0/0x3c0
[   38.988555]  [<ffffffff816651ff>] proc_reg_read+0xef/0x170
[   38.994146]  [<ffffffff81665110>] ? proc_reg_write+0x170/0x170
[   39.000085]  [<ffffffff8151aa73>] __vfs_read+0x103/0x440
[   39.005508]  [<ffffffff8151a970>] ? vfs_iter_write+0x2d0/0x2d0
[   39.011444]  [<ffffffff815e878d>] ? fsnotify+0x5ad/0xee0
[   39.016859]  [<ffffffff815e90c0>] ? fsnotify+0xee0/0xee0
[   39.022281]  [<ffffffff81b4d4f9>] ? avc_policy_seqno+0x9/0x20
[   39.028144]  [<ffffffff81b5ebe8>] ? selinux_file_permission+0x348/0x460
[   39.034870]  [<ffffffff81b443e9>] ? security_file_permission+0x89/0x1e0
[   39.041589]  [<ffffffff8151c600>] ? rw_verify_area+0x100/0x2f0
[   39.047529]  [<ffffffff8151c913>] vfs_read+0x123/0x3a0
[   39.052773]  [<ffffffff8151f61f>] SyS_pread64+0x13f/0x170
[   39.058282]  [<ffffffff8151f4e0>] ? SyS_write+0x1b0/0x1b0
[   39.063783]  [<ffffffff81003044>] ? lockdep_sys_exit_thunk+0x12/0x14
[   39.070248]  [<ffffffff83773d36>] entry_SYSCALL_64_fastpath+0x16/0x76