[ 35.722419][ T26] audit: type=1800 audit(1552331587.984:27): pid=7495 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 35.754806][ T26] audit: type=1800 audit(1552331588.034:28): pid=7495 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 36.648291][ T26] audit: type=1800 audit(1552331588.964:29): pid=7495 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 36.668733][ T26] audit: type=1800 audit(1552331588.964:30): pid=7495 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.24' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 51.884360][ T7649] ------------[ cut here ]------------ [ 51.889908][ T7649] Bad or missing usercopy whitelist? Kernel memory exposure attempt detected from SLAB object 'fanotify_event' (offset 40, size 8)! [ 51.903686][ T7649] WARNING: CPU: 1 PID: 7649 at mm/usercopy.c:78 usercopy_warn+0xeb/0x110 [ 51.912099][ T7649] Kernel panic - not syncing: panic_on_warn set ... [ 51.918728][ T7649] CPU: 1 PID: 7649 Comm: syz-executor381 Not tainted 5.0.0+ #17 [ 51.926338][ T7649] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.936372][ T7649] Call Trace: [ 51.939652][ T7649] dump_stack+0x172/0x1f0 [ 51.944024][ T7649] ? usercopy_warn+0xb0/0x110 [ 51.948701][ T7649] panic+0x2cb/0x65c [ 51.952575][ T7649] ? __warn_printk+0xf3/0xf3 [ 51.957152][ T7649] ? usercopy_warn+0xeb/0x110 [ 51.961876][ T7649] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.968111][ T7649] ? __warn.cold+0x5/0x45 [ 51.972419][ T7649] ? __warn+0xe8/0x1d0 [ 51.976471][ T7649] ? usercopy_warn+0xeb/0x110 [ 51.981127][ T7649] __warn.cold+0x20/0x45 [ 51.985343][ T7649] ? usercopy_warn+0xeb/0x110 [ 51.989997][ T7649] report_bug+0x263/0x2b0 [ 51.994311][ T7649] do_error_trap+0x11b/0x200 [ 51.998893][ T7649] do_invalid_op+0x37/0x50 [ 52.003290][ T7649] ? usercopy_warn+0xeb/0x110 [ 52.008528][ T7649] invalid_op+0x14/0x20 [ 52.012802][ T7649] RIP: 0010:usercopy_warn+0xeb/0x110 [ 52.018077][ T7649] Code: c8 e8 d9 88 c0 ff 4c 8b 45 c0 4d 89 e9 4c 89 e1 48 8b 55 c8 41 57 48 89 de 48 c7 c7 e0 dc 74 87 ff 75 d0 41 56 e8 03 4b 93 ff <0f> 0b 48 83 c4 18 e9 46 ff ff ff 49 c7 c5 e0 da 74 87 4d 89 ee 4d [ 52.037803][ T7649] RSP: 0018:ffff8880a417fb18 EFLAGS: 00010282 [ 52.043842][ T7649] RAX: 0000000000000000 RBX: ffffffff8774dca0 RCX: 0000000000000000 [ 52.051790][ T7649] RDX: 0000000000000000 RSI: ffffffff815ad7b6 RDI: ffffed101482ff55 [ 52.059744][ T7649] RBP: ffff8880a417fb70 R08: ffff888088d78580 R09: 0000000000000000 [ 52.067793][ T7649] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8859408d [ 52.075742][ T7649] R13: ffffffff8775d500 R14: ffffffff8774db20 R15: 0000000000000008 [ 52.083709][ T7649] ? vprintk_func+0x86/0x189 [ 52.088280][ T7649] ? usercopy_warn+0xeb/0x110 [ 52.092990][ T7649] __check_heap_object+0x88/0xb3 [ 52.097958][ T7649] __check_object_size+0x342/0x42f [ 52.103062][ T7649] fanotify_read+0xde0/0x1430 [ 52.107742][ T7649] ? fanotify_release+0x350/0x350 [ 52.112748][ T7649] ? fsnotify+0xbc0/0xbc0 [ 52.117111][ T7649] ? fsnotify_first_mark+0x210/0x210 [ 52.122382][ T7649] ? do_wait_intr_irq+0x2b0/0x2b0 [ 52.127390][ T7649] ? __fget+0x381/0x550 [ 52.131634][ T7649] ? security_file_permission+0x94/0x380 [ 52.137246][ T7649] __vfs_read+0x8d/0x110 [ 52.141535][ T7649] ? fanotify_release+0x350/0x350 [ 52.146544][ T7649] vfs_read+0x194/0x3e0 [ 52.150682][ T7649] ksys_read+0xea/0x1f0 [ 52.154812][ T7649] ? kernel_write+0x120/0x120 [ 52.159465][ T7649] ? do_syscall_64+0x26/0x610 [ 52.164118][ T7649] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.170165][ T7649] ? do_syscall_64+0x26/0x610 [ 52.174830][ T7649] __x64_sys_read+0x73/0xb0 [ 52.179382][ T7649] do_syscall_64+0x103/0x610 [ 52.183953][ T7649] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.189930][ T7649] RIP: 0033:0x4456b9 [ 52.193801][ T7649] Code: e8 6c b6 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 52.213471][ T7649] RSP: 002b:00007fb296f31db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 52.221857][ T7649] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 00000000004456b9 [ 52.229804][ T7649] RDX: 000000000000006b RSI: 0000000020000000 RDI: 0000000000000004 [ 52.237822][ T7649] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 52.245776][ T7649] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac2c [ 52.253725][ T7649] R13: 00007ffd8eb3d16f R14: 00007fb296f329c0 R15: 20c49ba5e353f7cf [ 52.262464][ T7649] Kernel Offset: disabled [ 52.266869][ T7649] Rebooting in 86400 seconds..