[....] Starting enhanced syslogd: rsyslogd[ 13.275525] audit: type=1400 audit(1516628440.151:5): avc: denied { syslog } for pid=3502 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: [ 18.151767] audit: type=1400 audit(1516628445.027:6): avc: denied { map } for pid=3642 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 '10.128.0.17' (ECDSA) to the list of known hosts. executing program [ 24.433386] audit: type=1400 audit(1516628451.309:7): avc: denied { map } for pid=3656 comm="syzkaller008625" path="/root/syzkaller008625189" 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 [ 24.466698] audit: type=1400 audit(1516628451.342:8): avc: denied { map_create } for pid=3657 comm="syzkaller008625" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=bpf permissive=1 [ 24.467384] [ 24.467388] ============================= [ 24.467390] WARNING: suspicious RCU usage [ 24.467394] 4.15.0-rc8+ #1 Not tainted [ 24.467397] ----------------------------- [ 24.467401] ./include/linux/rcupdate.h:302 Illegal context switch in RCU read-side critical section! [ 24.467404] [ 24.467404] other info that might help us debug this: [ 24.467404] [ 24.467407] [ 24.467407] rcu_scheduler_active = 2, debug_locks = 1 [ 24.467411] 1 lock held by syzkaller008625/3657: [ 24.467413] #0: (rcu_read_lock){....}, at: [<000000002408fe03>] SyS_bpf+0x1105/0x4860 [ 24.467434] [ 24.467434] stack backtrace: [ 24.467440] CPU: 0 PID: 3657 Comm: syzkaller008625 Not tainted 4.15.0-rc8+ #1 [ 24.467444] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.467446] Call Trace: [ 24.467457] dump_stack+0x194/0x257 [ 24.467471] ? arch_local_irq_restore+0x53/0x53 [ 24.467497] lockdep_rcu_suspicious+0x123/0x170 [ 24.467510] ___might_sleep+0x385/0x470 [ 24.467519] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 24.467530] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 24.467541] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.467555] __might_sleep+0x95/0x190 [ 24.467571] __kmalloc+0x2c5/0x760 [ 24.467588] ? trie_get_next_key+0x517/0xf10 [ 24.467605] trie_get_next_key+0x517/0xf10 [ 24.467634] ? trie_lookup_elem+0x7d0/0x7d0 [ 24.467668] ? lock_acquire+0x1d5/0x580 [ 24.467675] ? lock_acquire+0x1d5/0x580 [ 24.467682] ? SyS_bpf+0x1105/0x4860 [ 24.467699] ? lock_release+0xa40/0xa40 [ 24.467709] ? rcu_read_lock_sched_held+0x108/0x120 [ 24.467717] ? __kmalloc+0x46e/0x760 [ 24.467727] ? rcutorture_record_progress+0x10/0x10 [ 24.467738] ? SyS_bpf+0x10bd/0x4860 [ 24.467753] SyS_bpf+0x11b4/0x4860 [ 24.467770] ? bpf_prog_get+0x20/0x20 [ 24.467784] ? lock_release+0xa40/0xa40 [ 24.467800] ? do_raw_spin_trylock+0x190/0x190 [ 24.467826] ? _raw_spin_unlock+0x22/0x30 [ 24.467835] ? __handle_mm_fault+0x80e/0x3ce0 [ 24.467851] ? check_noncircular+0x20/0x20 [ 24.467856] ? __pmd_alloc+0x4e0/0x4e0 [ 24.467865] ? vma_link+0xe9/0x170 [ 24.467881] ? find_held_lock+0x35/0x1d0 [ 24.467900] ? handle_mm_fault+0x248/0x8d0 [ 24.467913] ? find_held_lock+0x35/0x1d0 [ 24.467934] ? __do_page_fault+0x5f7/0xc90 [ 24.467944] ? lock_downgrade+0x980/0x980 [ 24.467965] ? handle_mm_fault+0x410/0x8d0 [ 24.467971] ? down_read_trylock+0xdb/0x170 [ 24.467977] ? __do_page_fault+0x32d/0xc90 [ 24.467987] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 24.467993] ? vmacache_find+0x5f/0x280 [ 24.468015] ? up_read+0x1a/0x4