[....] Starting enhanced syslogd: rsyslogd[ 5.788048] audit: type=1400 audit(1513515517.422:5): avc: denied { syslog } for pid=2960 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: [ 11.256621] audit: type=1400 audit(1513515522.891:6): avc: denied { map } for pid=3096 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-9,10.128.15.232' (ECDSA) to the list of known hosts. executing program [ 17.185467] audit: type=1400 audit(1513515528.820:7): avc: denied { map } for pid=3110 comm="syzkaller793953" path="/root/syzkaller793953504" 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 [ 17.199760] FAULT_INJECTION: forcing a failure. [ 17.199760] name failslab, interval 1, probability 0, space 0, times 1 [ 17.201318] CPU: 0 PID: 3110 Comm: syzkaller793953 Not tainted 4.15.0-rc3-next-20171214+ #67 [ 17.202581] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 17.203827] Call Trace: [ 17.204186] dump_stack+0xe9/0x14b [ 17.204668] should_fail+0x1e5/0x220 [ 17.205182] should_failslab+0x73/0x90 [ 17.205704] __kmalloc+0x63/0x730 [ 17.209124] ? find_held_lock+0x35/0xa0 [ 17.213074] ? sget_userns+0x4fc/0x590 [ 17.216926] ? register_shrinker+0xbf/0xf0 [ 17.221131] register_shrinker+0xbf/0xf0 [ 17.225160] sget_userns+0x510/0x590 [ 17.228845] ? get_anon_bdev+0x120/0x120 [ 17.232876] ? get_anon_bdev+0x120/0x120 [ 17.236902] sget+0x92/0xc0 [ 17.239801] ? shmem_remount_fs+0x190/0x190 [ 17.244088] mount_nodev+0x37/0xb0 [ 17.247594] shmem_mount+0x2c/0x40 [ 17.251101] mount_fs+0x46/0x1a0 [ 17.254438] vfs_kern_mount.part.26+0x67/0x180 [ 17.258989] do_mount+0x775/0x11c0 [ 17.262500] ? copy_mount_options+0x1a1/0x2c0 [ 17.266964] SyS_mount+0xab/0x120 [ 17.270384] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 17.275102] RIP: 0033:0x440509 [ 17.278258] RSP: 002b:00007ffd08e88fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 17.285930] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000440509 [ 17.293165] RDX: 00000000209aaffa RSI: 00000000206c6000 RDI: 00000000206eaff8 [ 17.300399] RBP: 0000000000000005 R08: 0000000020be9f95 R09: 0000000000003431 [ 17.307632] R10: 0000000000200002 R11: 0000000000000246 R12: 0000000000401e30 [ 17.314867] R13: 0000000000401ec0 R14: 0000000000000000 R15: 0000000000000000 [ 17.322473] BUG: unable to handle kernel NULL pointer dereference at (null) [ 17.330432] IP: __list_del_entry_valid+0x29/0x90 [ 17.335148] PGD 2167c9067 P4D 2167c9067 PUD 216075067 PMD 0 [ 17.340917] Oops: 0000 [#1] SMP [ 17.344161] Dumping ftrace buffer: [ 17.347665] (ftrace buffer empty) [ 17.351340] Modules linked in: [ 17.354498] CPU: 0 PID: 3110 Comm: syzkaller793953 Not tainted 4.15.0-rc3-next-20171214+ #67 [ 17.363036] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 17.372356] RIP: 0010:__list_del_entry_valid+0x29/0x90 [ 17.377593] RSP: 0018:ffffc90001843e30 EFLAGS: 00010207 [ 17.382918] RAX: 0000000000000000 RBX: ffff880214315730 RCX: dead000000000200 [ 17.390151] RDX: 0000000000000000 RSI: ffffffff83da6a60 RDI: ffff880214315758 [ 17.397386] RBP: ffffc90001843e30 R08: ffffffff83ad0c70 R09: 0000000000000000 [ 17.404622] R10: ffffc90001843db0 R11: ffff88021374c780 R12: ffffffff830996e0 [ 17.411857] R13: ffff88021374c780 R14: 0000000000000000 R15: ffff880214ebf038 [ 17.419100] FS: 0000000002667880(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 [ 17.427288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 17.433134] CR2: 0000000000000000 CR3: 000000020e9fb003 CR4: 00000000001606f0 [ 17.440368] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 17.447602] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 17.454835] Call Trace: [ 17.457388] unregister_shrinker+0x22/0x70 [ 17.461589] deactivate_locked_super+0x45/0x80 [ 17.466135] deactivate_super+0x61/0x90 [ 17.470163] cleanup_mnt+0x49/0x90 [ 17.473666] __cleanup_mnt+0x16/0x20 [ 17.477359] task_work_run+0xa3/0xe0 [ 17.481043] exit_to_usermode_loop+0x152/0x160 [ 17.485594] syscall_return_slowpath+0x1b4/0x1e0 [ 17.490317] entry_SYSCALL_64_fastpath+0x94/0x96 [ 17.495039] RIP: 0033:0x440509 [ 17.498195] RSP: 002b:00007ffd08e88fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 17.505872] RAX: ffffffffffffffec RBX: 0000000000000000 RCX: 0000000000440509 [ 17.513108] RDX: 00000000209aaffa RSI: 00000000206c6000 RDI: 00000000206eaff8 [ 17.520343] RBP: 00000000006cb018 R08: 0000000020be9f95 R09: 0000000000003431 [ 17.527577] R10: 0000000000200002 R11: 0000000000000246 R12: 0000000000000005 [ 17.534811] R13: ffffffffffffffff R14: 0000000000000000 R15: 0000000000000000 [ 17.542058] Code: 00 00 55 48 8b 07 48 b9 00 01 00 00 00 00 ad de 48 8b 57 08 48 89 e5 48 39 c8 74 27 48 b9 00 02 00 00 00 00 ad de 48 39 ca 74 2c <48> 8b 32 48 39 fe 75 35 48 8b 50 08 48 39 f2 75 40 b8 01 00 00 [ 17.561137] RIP: __list_del_entry_valid+0x29/0x90 RSP: ffffc90001843e30 [ 17.567850] CR2: 0000000000000000 [ 17.571315] ---[ end trace 2212e43cc89cd8b4 ]--- [ 17.576051] Kernel panic - not syncing: Fatal exception [ 17.581740] Dumping ftrace buffer: [ 17.585246] (ftrace buffer empty) [ 17.588921] Kernel Offset: disabled [ 17.592514] Rebooting in 86400 seconds..