[....] Starting enhanced syslogd: rsyslogd[ 11.880079] audit: type=1400 audit(1514837356.541:5): avc: denied { syslog } for pid=3006 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 18.696745] audit: type=1400 audit(1514837363.358:6): avc: denied { map } for pid=3146 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 '10.128.0.5' (ECDSA) to the list of known hosts. executing program executing program executing program [ 24.884266] audit: type=1400 audit(1514837369.546:7): avc: denied { map } for pid=3160 comm="syzkaller463198" path="/root/syzkaller463198676" 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 [ 24.895266] syzkaller463198 uses obsolete (PF_INET,SOCK_PACKET) executing program executing program [ 24.916943] audit: type=1400 audit(1514837369.560:8): avc: denied { map } for pid=3160 comm="syzkaller463198" path="/dev/usbmon0" dev="devtmpfs" ino=8944 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file permissive=1 [ 24.956663] page:000000008d1be1ab count:0 mapcount:0 mapping: (null) index:0x0 [ 24.964897] flags: 0x2fffc0000000000() [ 24.968846] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 24.976783] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000 [ 24.984811] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 24.991952] ------------[ cut here ]------------ [ 24.996678] kernel BUG at ./include/linux/mm.h:844! [ 25.001708] invalid opcode: 0000 [#1] SMP KASAN [ 25.006353] Dumping ftrace buffer: [ 25.009873] (ftrace buffer empty) [ 25.013558] Modules linked in: [ 25.016721] CPU: 0 PID: 3161 Comm: syzkaller463198 Not tainted 4.15.0-rc4-next-20171221+ #78 [ 25.025259] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.034591] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 25.039582] RSP: 0018:ffff8801c87b7510 EFLAGS: 00010203 [ 25.044912] RAX: 0000000000000000 RBX: 1ffff100390f6ea4 RCX: 0000000000000000 [ 25.052148] RDX: 0000000000000000 RSI: 1ffff100390f6dee RDI: ffffed00390f6e90 [ 25.059386] RBP: ffff8801c87b75e8 R08: 1ffff100390f6db0 R09: 0000000000000000 [ 25.066626] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff100390f6ea8 [ 25.073863] R13: dffffc0000000000 R14: ffff8801c87b7840 R15: ffffea0007219280 [ 25.081102] FS: 00007fcf9f557700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 25.089291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.095137] CR2: 000000002001d000 CR3: 00000001c8d2f003 CR4: 00000000001606f0 [ 25.102374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.109608] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.116842] Call Trace: [ 25.119402] ? mon_alloc_buff+0x1a0/0x1a0 [ 25.123520] ? finish_fault+0x1b4/0x2a0 [ 25.127463] ? lock_downgrade+0x980/0x980 [ 25.131578] ? do_swap_page+0x2a10/0x2a10 [ 25.135696] __do_fault+0xeb/0x30f [ 25.139204] ? pte_offset_kernel+0xc7/0xc7 [ 25.143406] ? vma_compute_subtree_gap+0x200/0x200 [ 25.148414] ? check_noncircular+0x20/0x20 [ 25.152626] ? _raw_spin_unlock+0x22/0x30 [ 25.156742] __handle_mm_fault+0x1d8f/0x3ce0 [ 25.161120] ? __pmd_alloc+0x4e0/0x4e0 [ 25.164977] ? find_held_lock+0x35/0x1d0 [ 25.169013] ? handle_mm_fault+0x2a0/0x930 [ 25.173221] ? lock_downgrade+0x980/0x980 [ 25.177364] handle_mm_fault+0x38f/0x930 [ 25.181395] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 25.185944] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.191796] ? find_vma+0x30/0x150 [ 25.195307] __get_user_pages+0x50c/0x15f0 [ 25.199515] ? follow_page_mask+0x17f0/0x17f0 [ 25.203977] ? vma_link+0xe9/0x170 [ 25.207488] ? lock_acquire+0x1d5/0x580 [ 25.211431] ? lock_acquire+0x1d5/0x580 [ 25.215371] ? __mm_populate+0x2c7/0x450 [ 25.219401] ? lock_release+0xa40/0xa40 [ 25.223342] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.229196] ? rcu_note_context_switch+0x710/0x710 [ 25.234094] populate_vma_page_range+0x20e/0x2f0 [ 25.238883] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 25.243792] ? vmacache_find+0x5f/0x280 [ 25.247746] ? vmacache_update+0xfe/0x130 [ 25.251862] ? find_vma+0x30/0x150 [ 25.255375] __mm_populate+0x23a/0x450 [ 25.259246] ? populate_vma_page_range+0x2f0/0x2f0 [ 25.264144] ? down_read_killable+0x180/0x180 [ 25.268615] ? security_mmap_file+0x143/0x180 [ 25.273085] vm_mmap_pgoff+0x241/0x280 [ 25.276957] ? vma_is_stack_for_current+0xa0/0xa0 [ 25.281785] ? do_page_fault+0xee/0x720 [ 25.285742] SyS_mmap_pgoff+0x462/0x5f0 [ 25.289697] ? find_mergeable_anon_vma+0xd0/0xd0 [ 25.294433] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.299418] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.304145] SyS_mmap+0x16/0x20 [ 25.307394] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 25.313090] RIP: 0033:0x44a039 [ 25.316257] RSP: 002b:00007fcf9f556cd8 EFLAGS: 00000216 ORIG_RAX: 0000000000000009 [ 25.323942] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 000000000044a039 [ 25.331208] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 25.338446] RBP: 00000000006dbc20 R08: 000000000000001a R09: 0000000000000000 [ 25.345685] R10: 0000000000008011 R11: 0000000000000216 R12: 0000000000000000 [ 25.352922] R13: 00007ffdc74ed8ff R14: 00007fcf9f5579c0 R15: 0000000000000009 [ 25.360167] Code: 00 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 41 bc 02 00 00 00 eb bb e8 eb f2 96 fd 48 c7 c6 20 1f d1 85 4c 89 ff e8 8c b4 c0 fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 c7 f2 96 fd [ 25.379240] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c87b7510 [ 25.385866] ---[ end trace 3c6dffbd71e1e6e8 ]--- [ 25.390816] Kernel panic - not syncing: Fatal exception [ 25.396767] Dumping ftrace buffer: [ 25.400285] (ftrace buffer empty) [ 25.403964] Kernel Offset: disabled [ 25.407561] Rebooting in 86400 seconds..