[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.713626] audit: type=1400 audit(1520461684.254:6): avc: denied { map } for pid=4210 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 18.744956] sshd (4208) used greatest stack depth: 16568 bytes left Warning: Permanently added '10.128.0.42' (ECDSA) to the list of known hosts. [ 60.530087] audit: type=1400 audit(1520461726.070:7): avc: denied { map } for pid=4228 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/03/07 22:28:46 parsed 1 programs 2018/03/07 22:28:46 executed programs: 0 [ 60.762888] audit: type=1400 audit(1520461726.303:8): avc: denied { map } for pid=4228 comm="syz-execprog" path="/root/syzkaller-shm409013028" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 60.773177] IPVS: ftp: loaded support on port[0] = 21 [ 62.320091] kasan: CONFIG_KASAN_INLINE enabled [ 62.324707] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 62.332038] general protection fault: 0000 [#1] SMP KASAN [ 62.337544] Dumping ftrace buffer: [ 62.341051] (ftrace buffer empty) [ 62.344733] Modules linked in: [ 62.347897] CPU: 1 PID: 4645 Comm: syz-executor0 Not tainted 4.16.0-rc4+ #254 [ 62.355139] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.364469] RIP: 0010:__lock_acquire+0xa09/0x3e00 [ 62.369276] RSP: 0018:ffff8801b21cf320 EFLAGS: 00010002 [ 62.374619] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 62.381856] RDX: 0000000000000046 RSI: 0000000000000000 RDI: ffffffff86ec9920 [ 62.389094] RBP: ffff8801b21cf6b0 R08: ffffffff841cb919 R09: 0000000000000001 [ 62.396333] R10: 0000000000000000 R11: 0000000000000230 R12: 0000000000000000 [ 62.403572] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801b16a8000 [ 62.410812] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f7fceb40 [ 62.419009] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 62.424859] CR2: 000000000813b029 CR3: 00000001ae437006 CR4: 00000000001606e0 [ 62.432100] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.439338] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.446574] Call Trace: [ 62.449133] ? __lock_acquire+0x664/0x3e00 [ 62.453335] ? print_irqtrace_events+0x270/0x270 [ 62.458058] ? __lockdep_init_map+0xe4/0x650 [ 62.462435] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 62.467593] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 62.472749] ? find_held_lock+0x35/0x1d0 [ 62.476777] ? __lock_acquire+0x664/0x3e00 [ 62.480983] ? ucma_destroy_id+0x269/0x4c0 [ 62.485189] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 62.490346] ? __might_sleep+0x95/0x190 [ 62.494287] ? ucma_destroy_id+0x269/0x4c0 [ 62.498488] ? __mutex_lock+0x16f/0x1a80 [ 62.502517] ? ucma_destroy_id+0x269/0x4c0 [ 62.506721] ? trace_hardirqs_off+0x10/0x10 [ 62.511011] ? trace_hardirqs_off+0x10/0x10 [ 62.515300] ? mutex_lock_io_nested+0x1900/0x1900 [ 62.520112] ? futex_wait+0x6a9/0x9a0 [ 62.523881] lock_acquire+0x1d5/0x580 [ 62.527652] ? lock_acquire+0x1d5/0x580 [ 62.531595] ? rdma_destroy_id+0xa9/0xda0 [ 62.535711] ? lock_release+0xa40/0xa40 [ 62.539653] ? lock_downgrade+0x980/0x980 [ 62.543768] ? lock_release+0xa40/0xa40 [ 62.547710] ? check_same_owner+0x320/0x320 [ 62.552000] ? do_raw_spin_trylock+0x190/0x190 [ 62.556553] _raw_spin_lock_irqsave+0x96/0xc0 [ 62.561018] ? rdma_destroy_id+0xa9/0xda0 [ 62.565132] rdma_destroy_id+0xa9/0xda0 [ 62.569076] ? trace_hardirqs_on+0xd/0x10 [ 62.573192] ? _raw_spin_unlock_irq+0x27/0x70 [ 62.577654] ? wait_for_completion+0xe0/0x770 [ 62.582115] ? cma_release_dev+0x350/0x350 [ 62.586316] ? wait_for_completion_interruptible+0x7e0/0x7e0 [ 62.592083] ? do_wait_intr_irq+0x3e0/0x3e0 [ 62.596371] ? do_raw_spin_trylock+0x190/0x190 [ 62.600920] ? _raw_spin_unlock_irqrestore+0x31/0xc0 [ 62.605991] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 62.610979] ? trace_hardirqs_on+0xd/0x10 [ 62.615093] ? complete+0x62/0x80 [ 62.618518] ucma_destroy_id+0x2e9/0x4c0 [ 62.622546] ? ucma_close+0x2f0/0x2f0 [ 62.626315] ? __might_sleep+0x95/0x190 [ 62.630258] ? kasan_check_write+0x14/0x20 [ 62.634459] ? _copy_from_user+0x99/0x110 [ 62.638577] ucma_write+0x2d6/0x3d0 [ 62.642172] ? ucma_close+0x2f0/0x2f0 [ 62.645942] ? ucma_resolve_route+0x1a0/0x1a0 [ 62.650407] ? ucma_resolve_route+0x1a0/0x1a0 [ 62.654871] __vfs_write+0xef/0x970 [ 62.658469] ? rcu_note_context_switch+0x710/0x710 [ 62.663367] ? kernel_read+0x120/0x120 [ 62.667221] ? __might_sleep+0x95/0x190 [ 62.671163] ? _cond_resched+0x14/0x30 [ 62.675018] ? __inode_security_revalidate+0xd9/0x130 [ 62.680175] ? avc_policy_seqno+0x9/0x20 [ 62.684206] ? selinux_file_permission+0x82/0x460 [ 62.689407] ? security_file_permission+0x89/0x1e0 [ 62.694304] ? rw_verify_area+0xe5/0x2b0 [ 62.698332] ? __fdget_raw+0x20/0x20 [ 62.702013] vfs_write+0x189/0x510 [ 62.705522] SyS_write+0xef/0x220 [ 62.708943] ? exit_to_usermode_loop+0x198/0x2f0 [ 62.713674] ? SyS_read+0x220/0x220 [ 62.717271] ? do_fast_syscall_32+0x156/0xf9f [ 62.721737] ? SyS_read+0x220/0x220 [ 62.725334] do_fast_syscall_32+0x3ec/0xf9f [ 62.729624] ? _raw_spin_unlock_irq+0x27/0x70 [ 62.734087] ? do_int80_syscall_32+0x9c0/0x9c0 [ 62.738635] ? _raw_spin_unlock_irq+0x27/0x70 [ 62.743099] ? finish_task_switch+0x1c1/0x7e0 [ 62.747561] ? syscall_return_slowpath+0x2ac/0x550 [ 62.752459] ? prepare_exit_to_usermode+0x350/0x350 [ 62.757441] ? sysret32_from_system_call+0x5/0x3c [ 62.762252] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 62.767063] entry_SYSENTER_compat+0x70/0x7f [ 62.771437] RIP: 0023:0xf7ff3c99 [ 62.774768] RSP: 002b:00000000f7fce09c EFLAGS: 00000286 ORIG_RAX: 0000000000000004 [ 62.782442] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000020000040 [ 62.789681] RDX: 0000000000000018 RSI: 0000000000000000 RDI: 0000000000000000 [ 62.796918] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 62.804158] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 62.811397] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 62.818638] Code: 81 c4 60 03 00 00 44 89 d0 5b 41 5a 41 5c 41 5d 41 5e 41 5f 5d 49 8d 62 f8 c3 4c 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 0a 33 00 00 49 81 3b 60 ed 9f 87 41 bd 00 00 [ 62.837674] RIP: __lock_acquire+0xa09/0x3e00 RSP: ffff8801b21cf320 [ 62.843963] ---[ end trace a0f86c5f8b1c4ebf ]--- [ 62.848685] Kernel panic - not syncing: Fatal exception [ 62.854353] Dumping ftrace buffer: [ 62.857862] (ftrace buffer empty) [ 62.861542] Kernel Offset: disabled [ 62.865136] Rebooting in 86400 seconds..