[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 13.621742] mcstransd (3570) used greatest stack depth: 17344 bytes left 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: [ 19.112961] audit: type=1400 audit(1516383743.815:6): avc: denied { map } for pid=3656 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 '10.128.0.28' (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 [ 514.155960] audit: type=1400 audit(1516384238.858:7): avc: denied { map } for pid=3673 comm="syzkaller592073" path="/root/syzkaller592073686" 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 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 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 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 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 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 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 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 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 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 [ 522.218303] BUG: unable to handle kernel paging request at ffffc90001691000 [ 522.225453] IP: memset_erms+0x9/0x10 [ 522.229149] PGD 1dad2c067 P4D 1dad2c067 PUD 1dad2d067 PMD 1c6a8f067 PTE 0 [ 522.236059] Oops: 0002 [#1] SMP KASAN [ 522.239836] Dumping ftrace buffer: [ 522.243356] (ftrace buffer empty) [ 522.247074] Modules linked in: [ 522.250283] CPU: 1 PID: 5739 Comm: syzkaller592073 Not tainted 4.15.0-rc8-mm1+ #57 [ 522.257973] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 executing program executing program [ 522.267311] RIP: 0010:memset_erms+0x9/0x10 [ 522.271526] RSP: 0018:ffff8801cbbdfb78 EFLAGS: 00010246 [ 522.276881] RAX: fffff520002d3f00 RBX: ffffc90001691000 RCX: 000000000000ee51 [ 522.284145] RDX: 000000000000ee51 RSI: 0000000000000000 RDI: ffffc90001691000 [ 522.291415] RBP: ffff8801cbbdfb98 R08: fffff520002d3fcb R09: ffffc90001691000 [ 522.298677] R10: 0000000000001dcb R11: fffff520002d3fca R12: 000000000000ee51 [ 522.305946] R13: 0000000000000000 R14: 00007ffffffff000 R15: 000000002001be51 executing program executing program executing program executing program [ 522.313211] FS: 00007f88ae7d7700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 522.321460] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 522.327365] CR2: ffffc90001691000 CR3: 00000001ccefa005 CR4: 00000000001606e0 [ 522.334660] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 522.341921] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 522.349186] Call Trace: [ 522.351767] ? memset+0x31/0x40 [ 522.355053] _copy_from_user+0xe9/0x110 [ 522.359035] snd_pcm_oss_write+0x438/0x880 [ 522.363274] ? snd_pcm_oss_ioctl_compat+0x30/0x30 executing program [ 522.368115] ? snd_pcm_oss_ioctl_compat+0x30/0x30 [ 522.372949] __vfs_write+0xef/0x970 [ 522.376572] ? rcu_note_context_switch+0x710/0x710 [ 522.381498] ? kernel_read+0x120/0x120 [ 522.385376] ? __might_sleep+0x95/0x190 [ 522.389349] ? _cond_resched+0x14/0x30 [ 522.393234] ? __inode_security_revalidate+0xd9/0x130 [ 522.398412] ? avc_policy_seqno+0x9/0x20 [ 522.402471] ? selinux_file_permission+0x82/0x460 [ 522.407308] ? security_file_permission+0x89/0x1e0 [ 522.412226] ? rw_verify_area+0xe5/0x2b0 [ 522.416284] ? __fdget_raw+0x20/0x20 [ 522.419989] vfs_write+0x189/0x510 [ 522.423518] SyS_write+0xef/0x220 [ 522.426977] ? SyS_read+0x220/0x220 [ 522.430594] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 522.436898] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 522.441658] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 522.446401] RIP: 0033:0x44a559 [ 522.449578] RSP: 002b:00007f88ae7d6da8 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 522.457274] RAX: ffffffffffffffda RBX: 00000000006dcc24 RCX: 000000000044a559 [ 522.464535] RDX: 000000000000fe51 RSI: 000000002000c000 RDI: 0000000000000003 [ 522.471787] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 522.479030] R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006dcc20 [ 522.486271] R13: 7073642f7665642f R14: 00800000c0045006 R15: 0000000000000001 [ 522.493521] Code: 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 aa 4c 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 [ 522.512622] RIP: memset_erms+0x9/0x10 RSP: ffff8801cbbdfb78 [ 522.518301] CR2: ffffc90001691000 [ 522.521730] ---[ end trace 8f421641f3e10f44 ]--- [ 522.526455] Kernel panic - not syncing: Fatal exception [ 522.532270] Dumping ftrace buffer: [ 522.535780] (ftrace buffer empty) [ 522.539475] Kernel Offset: disabled [ 522.543071] Rebooting in 86400 seconds..