[....] Starting enhanced syslogd: rsyslogd[ 12.955819] audit: type=1400 audit(1515834175.223:5): avc: denied { syslog } for pid=3344 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: [ 18.581279] audit: type=1400 audit(1515834180.849:6): avc: denied { map } for pid=3484 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 '10.128.15.193' (ECDSA) to the list of known hosts. [ 473.444935] audit: type=1400 audit(1515834635.712:7): avc: denied { map } for pid=3501 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/01/13 09:10:35 parsed 1 programs 2018/01/13 09:10:35 executed programs: 0 [ 473.578559] audit: type=1400 audit(1515834635.846:8): avc: denied { map } for pid=3501 comm="syz-execprog" path="/root/syzkaller-shm061293226" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 473.607437] audit: type=1400 audit(1515834635.846:9): avc: denied { sys_admin } for pid=3507 comm="syz-executor3" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 473.779410] audit: type=1400 audit(1515834636.047:10): avc: denied { sys_chroot } for pid=3509 comm="syz-executor3" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 473.810333] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 474.689789] kasan: CONFIG_KASAN_INLINE enabled [ 474.694411] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 474.701783] general protection fault: 0000 [#1] SMP KASAN [ 474.707289] Dumping ftrace buffer: [ 474.710796] (ftrace buffer empty) [ 474.714477] Modules linked in: [ 474.717641] CPU: 1 PID: 3478 Comm: udevd Not tainted 4.15.0-rc7+ #259 [ 474.724184] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 474.733624] RIP: 0010:native_write_cr4+0x4/0x10 [ 474.738261] RSP: 0018:ffff8801db307ca8 EFLAGS: 00010006 [ 474.743591] RAX: ffff8801c17de480 RBX: 00000000001606e0 RCX: ffffffff811a32b2 [ 474.750829] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 474.758067] RBP: ffff8801db307ca8 R08: 1ffff100381a3ce3 R09: 0000000000000002 [ 474.765306] R10: ffff8801c0d1ebe0 R11: 0000000000000000 R12: 0000000000000006 [ 474.772543] R13: ffff8801c17de480 R14: ffff8801db31d130 R15: ffff8801db31d130 [ 474.779785] FS: 00007f6b429d37a0(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 474.787986] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 474.793836] CR2: 00007f6b429da000 CR3: 00000001c0d4b006 CR4: 00000000001626e0 [ 474.801080] Call Trace: [ 474.803629] [ 474.805782] hardware_disable+0x34a/0x4b0 [ 474.809938] ? irq_work_sync+0x1a0/0x1a0 [ 474.813989] ? lock_downgrade+0x980/0x980 [ 474.818125] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 474.822607] kvm_arch_hardware_disable+0x35/0xd0 [ 474.827334] hardware_disable_nolock+0x30/0x40 [ 474.831902] flush_smp_call_function_queue+0x1f4/0x570 [ 474.837148] ? cpumask_weight+0x40/0x40 [ 474.841103] ? tick_program_event+0x83/0x100 [ 474.845497] ? __lock_is_held+0xb6/0x140 [ 474.849532] generic_smp_call_function_single_interrupt+0x13/0x30 [ 474.855772] smp_call_function_single_interrupt+0x103/0x640 [ 474.861450] ? smp_call_function_interrupt+0x640/0x640 [ 474.866702] ? _raw_spin_lock+0x32/0x40 [ 474.870646] ? _raw_spin_unlock+0x22/0x30 [ 474.874784] ? handle_edge_irq+0x2b4/0x7c0 [ 474.879017] ? task_prio+0x40/0x40 [ 474.882537] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 474.887363] call_function_single_interrupt+0xa9/0xb0 [ 474.892518] [ 474.894748] RIP: 0010:__radix_tree_lookup+0xb8/0x5e0 [ 474.899820] RSP: 0018:ffff8801c0d1ea80 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff04 [ 474.907497] RAX: ffffed00381a3d5c RBX: ffff8801bb057840 RCX: ffff8801c0d1ec98 [ 474.914737] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801bb057840 [ 474.921978] RBP: ffff8801c0d1ec68 R08: 1ffff100381a3ce3 R09: 0000000000000002 [ 474.929216] R10: ffff8801c0d1ebe0 R11: 0000000000000000 R12: ffff8801c0d1ec98 [ 474.936454] R13: dffffc0000000000 R14: ffff8801bb057840 R15: 0000000000000000 [ 474.943752] ? get_page_from_freelist+0xa83/0x52f0 [ 474.948669] ? kasan_unpoison_shadow+0x35/0x50 [ 474.953221] ? get_page_from_freelist+0x2d70/0x52f0 [ 474.958206] ? __radix_tree_insert+0x7b0/0x7b0 [ 474.962779] ? __lock_acquire+0x664/0x3e00 [ 474.966988] ? lock_acquire+0x1d5/0x580 [ 474.970932] ? lock_acquire+0x1d5/0x580 [ 474.974895] ? find_get_pages_range_tag+0x1000/0x1000 [ 474.980063] radix_tree_lookup_slot+0x78/0xe0 [ 474.984525] ? __radix_tree_lookup+0x5e0/0x5e0 [ 474.989112] ? rcutorture_record_progress+0x10/0x10 [ 474.994103] find_get_entry+0x184/0x9e0 [ 474.998046] ? print_irqtrace_events+0x270/0x270 [ 475.002769] ? find_get_pages_range_tag+0x1000/0x1000 [ 475.007926] ? __lock_is_held+0xb6/0x140 [ 475.011959] ? update_load_avg+0x249/0x2d80 [ 475.016257] ? __lock_acquire+0x664/0x3e00 [ 475.020464] ? print_irqtrace_events+0x270/0x270 [ 475.025198] ? update_cfs_rq_load_avg.part.69+0x2d0/0x2d0 [ 475.030704] ? __update_load_avg_se.isra.27+0x56a/0x7c0 [ 475.036038] ? __update_load_avg_se.isra.27+0x56a/0x7c0 [ 475.041372] ? update_load_avg+0x249/0x2d80 [ 475.045661] ? __lock_acquire+0x664/0x3e00 [ 475.049914] ? __is_insn_slot_addr+0x1fc/0x330 [ 475.054469] ? print_irqtrace_events+0x270/0x270 [ 475.059192] ? __lock_acquire+0x664/0x3e00 [ 475.063403] find_lock_entry+0xde/0x730 [ 475.067348] ? find_get_entry+0x9e0/0x9e0 [ 475.071465] ? __lock_acquire+0x664/0x3e00 [ 475.075670] ? print_irqtrace_events+0x270/0x270 [ 475.080392] ? check_noncircular+0x20/0x20 [ 475.084599] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 475.089755] ? __lock_acquire+0x664/0x3e00 [ 475.093957] ? check_noncircular+0x20/0x20 [ 475.098163] ? __lock_acquire+0x664/0x3e00 [ 475.102404] shmem_getpage_gfp+0x364/0x3730 [ 475.106716] ? shmem_add_to_page_cache+0xdb0/0xdb0 [ 475.111619] ? __lock_acquire+0x664/0x3e00 [ 475.115825] ? lock_pin_lock+0x360/0x360 [ 475.119858] ? __is_insn_slot_addr+0x1fc/0x330 [ 475.124409] ? print_irqtrace_events+0x270/0x270 [ 475.129139] ? print_irqtrace_events+0x270/0x270 [ 475.133865] ? print_irqtrace_events+0x270/0x270 [ 475.138591] ? check_noncircular+0x20/0x20 [ 475.142797] ? is_bpf_text_address+0x7b/0x120 [ 475.147261] ? print_irqtrace_events+0x270/0x270 [ 475.151985] ? print_irqtrace_events+0x270/0x270 [ 475.156711] ? __lock_acquire+0x664/0x3e00 [ 475.160920] ? __lock_acquire+0x664/0x3e00 [ 475.165168] ? mem_cgroup_update_lru_size+0xe0/0xe0 [ 475.170156] ? __lock_acquire+0x664/0x3e00 [ 475.174367] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 475.179538] ? retint_kernel+0x10/0x10 [ 475.183398] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 475.188563] ? get_mem_cgroup_from_mm+0x49b/0x710 [ 475.193376] ? __lock_acquire+0x664/0x3e00 [ 475.197582] ? __pagevec_lru_add+0x30/0x30 [ 475.201788] ? check_noncircular+0x20/0x20 [ 475.205993] ? print_irqtrace_events+0x270/0x270 [ 475.210720] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 475.215877] ? check_noncircular+0x20/0x20 [ 475.220083] ? check_noncircular+0x20/0x20 [ 475.224286] ? lru_cache_add+0x1c7/0x3a0 [ 475.228317] ? get_mem_cgroup_from_mm+0x710/0x710 [ 475.233130] ? lru_cache_add_file+0x20/0x20 [ 475.237430] ? find_held_lock+0x35/0x1d0 [ 475.241466] ? print_irqtrace_events+0x270/0x270 [ 475.246212] ? current_time+0x18/0xc0 [ 475.249984] ? lock_downgrade+0x980/0x980 [ 475.254152] ? iov_iter_fault_in_readable+0x20e/0x410 [ 475.259314] ? iov_iter_revert+0x9d0/0x9d0 [ 475.263521] shmem_write_begin+0xf7/0x1a0 [ 475.267641] generic_perform_write+0x28f/0x600 [ 475.272200] ? filemap_fdatawait_keep_errors+0xb0/0xb0 [ 475.277447] ? current_time+0x88/0xc0 [ 475.281218] ? file_update_time+0xbf/0x470 [ 475.285435] ? current_time+0xc0/0xc0 [ 475.289209] ? down_write+0x87/0x120 [ 475.292893] __generic_file_write_iter+0x366/0x5b0 [ 475.297795] generic_file_write_iter+0x399/0x790 [ 475.302535] ? __generic_file_write_iter+0x5b0/0x5b0 [ 475.307610] ? iov_iter_init+0xaf/0x1d0 [ 475.311589] __vfs_write+0x684/0x970 [ 475.315272] ? lock_acquire+0x1d5/0x580 [ 475.319218] ? kernel_read+0x120/0x120 [ 475.323086] ? rcu_sync_lockdep_assert+0x6d/0xb0 [ 475.327814] ? __sb_start_write+0x209/0x2a0 [ 475.332105] vfs_write+0x189/0x510 [ 475.335617] SyS_write+0xef/0x220 [ 475.339041] ? SyS_read+0x220/0x220 [ 475.342638] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 475.347623] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 475.352364] entry_SYSCALL_64_fastpath+0x23/0x9a [ 475.357097] RIP: 0033:0x7f6b420db370 [ 475.360779] RSP: 002b:00007fff11e93ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 475.368452] RAX: ffffffffffffffda RBX: 0000000000fc3f80 RCX: 00007f6b420db370 [ 475.375693] RDX: 000000000000001b RSI: 00007f6b429da000 RDI: 0000000000000005 [ 475.382931] RBP: 00007fff11e93e60 R08: 00007f6b429d37a0 R09: 0000000000ea47f0 [ 475.390171] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 475.397412] R13: 00007fff11e93e70 R14: 0000000000420724 R15: ffffffffffffff00 [ 475.404658] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 475.423726] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db307ca8 [ 475.429857] ---[ end trace 82f95ed058f84961 ]--- [ 475.434578] Kernel panic - not syncing: Fatal exception in interrupt [ 475.441399] Dumping ftrace buffer: [ 475.444905] (ftrace buffer empty) [ 475.448586] Kernel Offset: disabled [ 475.452189] Rebooting in 86400 seconds..