[....] Starting OpenBSD Secure Shell server: sshd[ 13.488221] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 45.120829] random: sshd: uninitialized urandom read (32 bytes read) [ 45.530361] audit: type=1400 audit(1560811830.255:6): avc: denied { map } for pid=1792 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 [ 45.615921] random: sshd: uninitialized urandom read (32 bytes read) [ 46.212118] random: sshd: uninitialized urandom read (32 bytes read) [ 46.372440] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.1.36' (ECDSA) to the list of known hosts. [ 51.882779] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 51.971751] audit: type=1400 audit(1560811836.695:7): avc: denied { map } for pid=1804 comm="syz-executor336" path="/root/syz-executor336234600" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 51.974613] ------------[ cut here ]------------ [ 51.998373] audit: type=1400 audit(1560811836.695:8): avc: denied { map } for pid=1804 comm="syz-executor336" path="/dev/binder0" dev="devtmpfs" ino=5442 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:device_t:s0 tclass=chr_file permissive=1 [ 52.003078] kernel BUG at drivers/android/binder_alloc.c:1128! [ 52.003607] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 52.028600] audit: type=1400 audit(1560811836.695:9): avc: denied { set_context_mgr } for pid=1804 comm="syz-executor336" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=1 [ 52.034437] Modules linked in: [ 52.034462] CPU: 0 PID: 1804 Comm: syz-executor336 Not tainted 4.14.127+ #8 [ 52.034466] task: (ptrval) task.stack: (ptrval) [ 52.034526] RIP: 0010:binder_alloc_do_buffer_copy+0xc7/0x500 [ 52.034532] RSP: 0018:ffff8881cf4a7550 EFLAGS: 00010297 [ 52.040440] audit: type=1400 audit(1560811836.695:10): avc: denied { call } for pid=1804 comm="syz-executor336" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=1 [ 52.063889] RAX: ffff8881d0f20000 RBX: 0000000020001000 RCX: 00000000000000a8 [ 52.063892] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881d25f1458 [ 52.063895] RBP: 0000000000000078 R08: ffff8881cf4a7608 R09: 0000000000000008 [ 52.063897] R10: ffffed1039e94f1a R11: ffff8881cf4a78d7 R12: ffff8881cff05498 [ 52.063899] R13: 0000000000000008 R14: 00000000000000a8 R15: ffff8881cf4a7608 [ 52.063903] FS: 0000000001a61940(0000) GS:ffff8881db800000(0000) knlGS:0000000000000000 [ 52.063905] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.063908] CR2: 000056252e0af0f0 CR3: 00000001d691e004 CR4: 00000000001606b0 [ 52.063912] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.063914] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.063917] Call Trace: [ 52.063962] binder_validate_ptr+0xad/0x190 [ 52.063969] ? binder_get_object+0x190/0x190 [ 52.063977] binder_transaction+0x1edf/0x5700 [ 52.063988] ? binder_inc_ref_for_node+0xba0/0xba0 [ 52.064016] ? trace_hardirqs_on+0x10/0x10 [ 52.064031] ? __save_stack_trace+0x7a/0xf0 [ 52.068626] audit: type=1400 audit(1560811836.695:11): avc: denied { transfer } for pid=1804 comm="syz-executor336" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=1 [ 52.074600] ? __save_stack_trace+0x7a/0xf0 [ 52.074611] ? lock_acquire+0x10f/0x380 [ 52.248859] ? __might_fault+0xd4/0x1b0 [ 52.252824] ? __might_fault+0x177/0x1b0 [ 52.256873] ? binder_thread_write+0x512/0x1f90 [ 52.261521] ? binder_get_thread+0x1b3/0x800 [ 52.265904] ? binder_transaction+0x5700/0x5700 [ 52.270734] ? lock_downgrade+0x5d0/0x5d0 [ 52.274876] ? lock_acquire+0x10f/0x380 [ 52.279071] ? __might_fault+0xd4/0x1b0 [ 52.283112] ? __might_fault+0x177/0x1b0 [ 52.287158] ? binder_ioctl+0xd48/0x14ea [ 52.291276] ? binder_poll+0x230/0x230 [ 52.295158] ? __lock_acquire+0x56a/0x3fa0 [ 52.299421] ? uprobe_mmap+0xde/0x960 [ 52.303270] ? lock_downgrade+0x5d0/0x5d0 [ 52.307404] ? vma_wants_writenotify+0x19a/0x420 [ 52.312206] ? SyS_mmap_pgoff+0x1b0/0x1b0 [ 52.316344] ? uprobe_apply+0x130/0x130 [ 52.320301] ? binder_poll+0x230/0x230 [ 52.324271] ? do_vfs_ioctl+0xabe/0x1040 [ 52.328336] ? selinux_file_ioctl+0x426/0x590 [ 52.332815] ? selinux_file_ioctl+0x116/0x590 [ 52.337450] ? ioctl_preallocate+0x1e0/0x1e0 [ 52.341965] ? selinux_parse_skb.constprop.0+0x16b0/0x16b0 [ 52.347583] ? __fget+0x1ff/0x360 [ 52.351027] ? lock_downgrade+0x5d0/0x5d0 [ 52.355163] ? lock_acquire+0x10f/0x380 [ 52.359126] ? __fget+0x44/0x360 [ 52.362669] ? check_preemption_disabled+0x35/0x1f0 [ 52.367698] ? security_file_ioctl+0x7c/0xb0 [ 52.372099] ? SyS_ioctl+0x7f/0xb0 [ 52.375622] ? do_vfs_ioctl+0x1040/0x1040 [ 52.379761] ? do_syscall_64+0x19b/0x510 [ 52.383923] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 52.389394] Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 0d 04 00 00 48 8b 6d 58 48 29 dd e8 33 14 0c ff 49 39 ed 76 07 e8 29 14 0c ff <0f> 0b e8 22 14 0c ff 4c 29 ed 49 39 ee 77 ec e8 15 14 0c ff 41 [ 52.418141] RIP: binder_alloc_do_buffer_copy+0xc7/0x500 RSP: ffff8881cf4a7550 [ 52.425808] ---[ end trace 1d84e715307b7948 ]--- [ 52.431146] Kernel panic - not syncing: Fatal exception [ 52.437039] Kernel Offset: 0xa000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 52.447862] Rebooting in 86400 seconds..