[....] Starting enhanced syslogd: rsyslogd[ 10.654464] audit: type=1400 audit(1514762150.368:5): avc: denied { syslog } for pid=2990 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 15.585308] audit: type=1400 audit(1514762155.299:6): avc: denied { map } for pid=3129 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 '10.128.0.19' (ECDSA) to the list of known hosts. executing program executing program executing program [ 21.794641] audit: type=1400 audit(1514762161.508:7): avc: denied { map } for pid=3143 comm="syzkaller625722" path="/root/syzkaller625722397" 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 [ 21.820680] audit: type=1400 audit(1514762161.508:8): avc: denied { map } for pid=3143 comm="syzkaller625722" path="/dev/usbmon0" dev="devtmpfs" ino=1094 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 [ 21.850780] page:000000000597efd8 count:0 mapcount:0 mapping: (null) index:0x0 [ 21.859031] flags: 0x2fffc0000000000() [ 21.863114] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 21.871039] raw: ffffea0007223620 ffffea0007229460 0000000000000000 0000000000000000 [ 21.878914] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 21.886042] ------------[ cut here ]------------ [ 21.890772] kernel BUG at ./include/linux/mm.h:844! [ 21.895800] invalid opcode: 0000 [#1] SMP KASAN [ 21.900444] Dumping ftrace buffer: [ 21.903947] (ftrace buffer empty) [ 21.907622] Modules linked in: [ 21.910781] CPU: 1 PID: 3144 Comm: syzkaller625722 Not tainted 4.15.0-rc4-next-20171221+ #78 [ 21.919315] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.928641] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 21.933618] RSP: 0018:ffff8801c8b47510 EFLAGS: 00010203 [ 21.938946] RAX: 0000000000000000 RBX: 1ffff10039168ea4 RCX: 0000000000000000 [ 21.946180] RDX: 0000000000000000 RSI: 1ffff10039168dee RDI: ffffed0039168e90 [ 21.953416] RBP: ffff8801c8b475e8 R08: 1ffff10039168db0 R09: 0000000000000000 [ 21.960651] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff10039168ea8 [ 21.967886] R13: dffffc0000000000 R14: ffff8801c8b47840 R15: ffffea000761fe80 [ 21.975120] FS: 00007fadbf196700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 21.983309] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.989156] CR2: 0000000020000000 CR3: 00000001c9b68005 CR4: 00000000001606e0 [ 21.996391] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.003631] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.010867] Call Trace: [ 22.013428] ? mon_alloc_buff+0x1a0/0x1a0 [ 22.017545] ? finish_fault+0x1b4/0x2a0 [ 22.021489] ? lock_downgrade+0x980/0x980 [ 22.025608] ? do_swap_page+0x2a10/0x2a10 [ 22.029721] __do_fault+0xeb/0x30f [ 22.033227] ? pte_offset_kernel+0xc7/0xc7 [ 22.037433] ? vma_compute_subtree_gap+0x200/0x200 [ 22.042328] ? check_noncircular+0x20/0x20 [ 22.046527] ? _raw_spin_unlock+0x22/0x30 [ 22.050643] __handle_mm_fault+0x1d8f/0x3ce0 [ 22.055029] ? __pmd_alloc+0x4e0/0x4e0 [ 22.058894] ? find_held_lock+0x35/0x1d0 [ 22.062925] ? handle_mm_fault+0x2a0/0x930 [ 22.067130] ? lock_downgrade+0x980/0x980 [ 22.071259] handle_mm_fault+0x38f/0x930 [ 22.075291] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 22.079842] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 22.085691] ? find_vma+0x30/0x150 [ 22.089200] __get_user_pages+0x50c/0x15f0 [ 22.093420] ? follow_page_mask+0x17f0/0x17f0 [ 22.097883] ? vma_link+0xe9/0x170 [ 22.101393] ? lock_acquire+0x1d5/0x580 [ 22.105334] ? lock_acquire+0x1d5/0x580 [ 22.109271] ? __mm_populate+0x2c7/0x450 [ 22.113301] ? lock_release+0xa40/0xa40 [ 22.117240] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 22.123095] ? rcu_note_context_switch+0x710/0x710 [ 22.127995] populate_vma_page_range+0x20e/0x2f0 [ 22.132720] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 22.137618] ? vmacache_find+0x5f/0x280 [ 22.141560] ? vmacache_update+0xfe/0x130 [ 22.145682] ? find_vma+0x30/0x150 [ 22.149189] __mm_populate+0x23a/0x450 [ 22.153046] ? populate_vma_page_range+0x2f0/0x2f0 [ 22.157951] ? down_read_killable+0x180/0x180 [ 22.162413] ? security_mmap_file+0x143/0x180 [ 22.166878] vm_mmap_pgoff+0x241/0x280 [ 22.170734] ? vma_is_stack_for_current+0xa0/0xa0 [ 22.175549] SyS_mmap_pgoff+0x462/0x5f0 [ 22.179490] ? find_mergeable_anon_vma+0xd0/0xd0 [ 22.184214] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 22.189202] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 22.193924] SyS_mmap+0x16/0x20 [ 22.197168] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 22.201885] RIP: 0033:0x449309 [ 22.205038] RSP: 002b:00007fadbf195d98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 22.212708] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449309 [ 22.219948] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 22.227187] RBP: 0000000000000000 R08: 0000000000000008 R09: 0000000000000000 [ 22.234423] R10: 0000000000008011 R11: 0000000000000212 R12: 00000000006dac20 [ 22.241660] R13: 6273752f7665642f R14: 00007fadbf1969c0 R15: 0000000000000009 [ 22.248904] 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 [ 22.268592] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c8b47510 [ 22.275117] ---[ end trace 0315957c1643316a ]--- [ 22.279857] Kernel panic - not syncing: Fatal exception [ 22.285567] Dumping ftrace buffer: [ 22.289076] (ftrace buffer empty) [ 22.292749] Kernel Offset: disabled [ 22.296340] Rebooting in 86400 seconds..