[....] Starting enhanced syslogd: rsyslogd[ 4.978048] audit: type=1400 audit(1513198282.150:5): avc: denied { syslog } for pid=2972 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] 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: [ 9.237107] audit: type=1400 audit(1513198286.409:6): avc: denied { map } for pid=3107 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 Warning: Permanently added 'ci-upstream-next-kasan-gce-9,10.128.15.237' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 15.098475] audit: type=1400 audit(1513198292.271:7): avc: denied { map } for pid=3121 comm="syzkaller784107" path="/root/syzkaller784107913" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 15.143293] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 [ 15.151275] IP: __crypto_alg_lookup+0x43/0x190 [ 15.155816] PGD 0 P4D 0 [ 15.158452] Oops: 0000 [#1] SMP [ 15.161692] Dumping ftrace buffer: [ 15.165194] (ftrace buffer empty) [ 15.168867] Modules linked in: [ 15.172026] CPU: 1 PID: 3321 Comm: cryptomgr_probe Not tainted 4.15.0-rc3-next-20171213+ #66 [ 15.180562] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 15.189883] RIP: 0010:__crypto_alg_lookup+0x43/0x190 [ 15.194946] RSP: 0018:ffffc900017ebd28 EFLAGS: 00010293 [ 15.200271] RAX: ffff880216762080 RBX: 0000000000000000 RCX: ffffffff81673d23 [ 15.207504] RDX: 0000000000000000 RSI: 0000000000000403 RDI: ffff880214eba120 [ 15.214740] RBP: ffffc900017ebd70 R08: 0000000000000001 R09: 0000000000000001 [ 15.221975] R10: ffffc900017ebcf0 R11: 0000000000000000 R12: 0000000000000000 [ 15.229208] R13: 0000000000000000 R14: 000000000000240f R15: 0000000000000403 [ 15.236447] FS: 0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 [ 15.244639] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 15.250484] CR2: 0000000000000020 CR3: 000000020dc6b000 CR4: 00000000001406e0 [ 15.257718] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 15.264950] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 15.272181] Call Trace: [ 15.274745] crypto_alg_lookup+0x31/0x50 [ 15.278785] crypto_larval_lookup.part.8+0x34/0x1c0 [ 15.283776] crypto_alg_mod_lookup+0x77/0x120 [ 15.288235] ? crypto_larval_lookup+0x50/0x50 [ 15.292694] crypto_find_alg+0x63/0x70 [ 15.296546] crypto_grab_spawn+0x2f/0x80 [ 15.300570] crypto_grab_aead+0x35/0x40 [ 15.304518] pcrypt_create+0xca/0x2c0 [ 15.308281] ? pcrypt_cpumask_change_notify+0x90/0x90 [ 15.313433] cryptomgr_probe+0x40/0x100 [ 15.317374] kthread+0x149/0x170 [ 15.320703] ? crypto_alg_put+0x40/0x40 [ 15.324637] ? kthread_delayed_work_timer_fn+0xe0/0xe0 [ 15.329877] ? kthread_delayed_work_timer_fn+0xe0/0xe0 [ 15.335116] ret_from_fork+0x24/0x30 [ 15.338792] Code: 89 7d d0 e8 70 66 c4 ff 48 8b 1d 59 e4 a6 01 48 81 fb 60 21 0e 83 0f 84 4c 01 00 00 c7 45 c4 fe ff ff ff 45 31 e4 e8 4d 66 c4 ff <44> 8b 6b 20 41 f6 c5 60 0f 85 03 01 00 00 e8 3a 66 c4 ff 44 89 [ 15.357834] RIP: __crypto_alg_lookup+0x43/0x190 RSP: ffffc900017ebd28 [ 15.364376] CR2: 0000000000000020 [ 15.367792] ---[ end trace ff8e3661b9c3aa04 ]--- [ 15.372508] Kernel panic - not syncing: Fatal exception [ 15.378209] Dumping ftrace buffer: [ 15.381715] (ftrace buffer empty) [ 15.385390] Kernel Offset: disabled [ 15.388979] Rebooting in 86400 seconds..