Warning: Permanently added '10.128.1.16' (ECDSA) to the list of known hosts. [ 39.468816] random: sshd: uninitialized urandom read (32 bytes read) [ 39.583986] audit: type=1400 audit(1571651009.062:36): avc: denied { map } for pid=6877 comm="syz-executor059" path="/root/syz-executor059001107" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 39.860922] IPVS: ftp: loaded support on port[0] = 21 executing program [ 40.758342] audit: type=1400 audit(1571651010.232:37): avc: denied { map } for pid=6879 comm="syz-executor059" path="/dev/usbmon0" dev="devtmpfs" ino=14924 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file permissive=1 [ 40.805617] [ 40.807386] ====================================================== [ 40.813687] WARNING: possible circular locking dependency detected [ 40.819993] 4.14.150 #0 Not tainted [ 40.823605] ------------------------------------------------------ [ 40.829916] syz-executor059/6881 is trying to acquire lock: [ 40.835611] (&mm->mmap_sem){++++}, at: [] __might_fault+0xe0/0x1d0 [ 40.843580] [ 40.843580] but task is already holding lock: [ 40.849531] (&rp->fetch_lock){+.+.}, at: [] mon_bin_read+0x5d/0x5e0 [ 40.857620] [ 40.857620] which lock already depends on the new lock. [ 40.857620] [ 40.865929] [ 40.865929] the existing dependency chain (in reverse order) is: [ 40.873531] [ 40.873531] -> #1 (&rp->fetch_lock){+.+.}: [ 40.879231] lock_acquire+0x16f/0x430 [ 40.883661] __mutex_lock+0xe8/0x1470 [ 40.887970] mutex_lock_nested+0x16/0x20 [ 40.892537] mon_bin_vma_fault+0x6f/0x280 [ 40.897196] __do_fault+0x104/0x390 [ 40.901336] __handle_mm_fault+0x2460/0x3470 [ 40.906244] handle_mm_fault+0x293/0x7c0 [ 40.910824] __get_user_pages+0x465/0x1220 [ 40.915828] populate_vma_page_range+0x18e/0x230 [ 40.921283] __mm_populate+0x198/0x2c0 [ 40.925693] vm_mmap_pgoff+0x1be/0x1d0 [ 40.930089] SyS_mmap_pgoff+0x3ca/0x520 [ 40.934571] SyS_mmap+0x16/0x20 [ 40.938369] do_syscall_64+0x1e8/0x640 [ 40.942781] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.948470] [ 40.948470] -> #0 (&mm->mmap_sem){++++}: [ 40.954016] __lock_acquire+0x2cb3/0x4620 [ 40.958706] lock_acquire+0x16f/0x430 [ 40.963367] __might_fault+0x143/0x1d0 [ 40.967771] _copy_to_user+0x2c/0xd0 [ 40.972000] mon_bin_read+0x2fb/0x5e0 [ 40.976409] __vfs_read+0x105/0x6a0 [ 40.980535] vfs_read+0x137/0x350 [ 40.984492] SyS_read+0xfd/0x230 [ 40.988362] do_syscall_64+0x1e8/0x640 [ 40.992771] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.998472] [ 40.998472] other info that might help us debug this: [ 40.998472] [ 41.006897] Possible unsafe locking scenario: [ 41.006897] [ 41.013113] CPU0 CPU1 [ 41.017755] ---- ---- [ 41.022399] lock(&rp->fetch_lock); [ 41.026090] lock(&mm->mmap_sem); [ 41.032299] lock(&rp->fetch_lock); [ 41.038528] lock(&mm->mmap_sem); [ 41.042047] [ 41.042047] *** DEADLOCK *** [ 41.042047] [ 41.048267] 1 lock held by syz-executor059/6881: [ 41.053171] #0: (&rp->fetch_lock){+.+.}, at: [] mon_bin_read+0x5d/0x5e0 [ 41.061830] [ 41.061830] stack backtrace: [ 41.066325] CPU: 1 PID: 6881 Comm: syz-executor059 Not tainted 4.14.150 #0 [ 41.073401] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.082916] Call Trace: [ 41.085495] dump_stack+0x138/0x197 [ 41.089122] print_circular_bug.isra.0.cold+0x1cc/0x28f [ 41.094944] __lock_acquire+0x2cb3/0x4620 [ 41.099071] ? remove_wait_queue+0x10f/0x190 [ 41.103906] ? trace_hardirqs_on+0x10/0x10 [ 41.108332] ? save_trace+0x290/0x290 [ 41.112866] lock_acquire+0x16f/0x430 [ 41.116941] ? __might_fault+0xe0/0x1d0 [ 41.121261] __might_fault+0x143/0x1d0 [ 41.125124] ? __might_fault+0xe0/0x1d0 [ 41.129092] _copy_to_user+0x2c/0xd0 [ 41.132826] mon_bin_read+0x2fb/0x5e0 [ 41.136608] __vfs_read+0x105/0x6a0 [ 41.140216] ? __fsnotify_update_child_dentry_flags.part.0+0x300/0x300 [ 41.146865] ? mon_bin_fetch+0x2e0/0x2e0 [ 41.151530] ? vfs_copy_file_range+0xa40/0xa40 [ 41.156100] ? __inode_security_revalidate+0xd6/0x130 [ 41.161356] ? avc_policy_seqno+0x9/0x20 [ 41.165489] ? selinux_file_permission+0x85/0x480 [ 41.170345] ? security_file_permission+0x89/0x1f0 [ 41.175287] ? rw_verify_area+0xea/0x2b0 [ 41.179434] vfs_read+0x137/0x350 [ 41.182887] SyS_read+0xfd/0x230 [ 41.186234] ? kernel_write+0x120/0x120 [ 41.190187] ? do_syscall_64+0x53/0x640 [ 41.194151] ? kernel_write+0x120/0x120 [ 41.198113] do_syscall_64+0x1e8/0x640 [ 41.203199] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.208022] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 41.213192] RIP: 0033:0x44a7a9 [ 41.216360] RSP: 002b:00007f7e8526ace8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 41.224142] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 000000000044a7a9 [ 41.231400] RDX: 00000000000000cb RSI: 0000000020000100 RDI: 0000000000000003 [ 41.238823] RBP: 00000000006dbc30 R08: 00007f7e8526b700 R09: 0000000000000000 [ 41.246089] R10: 00007f7e8526b700 R11: 0000000000000246 R12: 00000000006dbc3c [ 41.253347] R13: 00007ffe2e58c4ef R14: 00007f7e8526b9c0 R15: 0000000000000001 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 42.841510] audit: type=1400 audit(1571651012.322:38): avc: denied { map } for pid=7533 comm="syz-executor059" path="/dev/bus/usb" dev="devtmpfs" ino=14930 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:device_t:s0 tclass=dir permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program