[....] Starting enhanced syslogd: rsyslogd[ 14.302722] audit: type=1400 audit(1516723178.764:5): avc: denied { syslog } for pid=3503 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: [ 16.991166] audit: type=1400 audit(1516723181.452:6): 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 '10.128.0.16' (ECDSA) to the list of known hosts. executing program [ 23.285753] audit: type=1400 audit(1516723187.747:7): avc: denied { map } for pid=3656 comm="syzkaller703595" path="/root/syzkaller703595530" 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 [ 23.320599] audit: type=1400 audit(1516723187.782:8): avc: denied { map_create } for pid=3657 comm="syzkaller703595" 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 [ 23.321306] [ 23.321309] ============================= [ 23.321311] WARNING: suspicious RCU usage [ 23.321317] 4.15.0-rc8+ #1 Not tainted [ 23.321319] ----------------------------- [ 23.321324] ./include/linux/rcupdate.h:302 Illegal context switch in RCU read-side critical section! [ 23.321326] [ 23.321326] other info that might help us debug this: [ 23.321326] [ 23.321329] [ 23.321329] rcu_scheduler_active = 2, debug_locks = 1 [ 23.321334] 1 lock held by syzkaller703595/3657: [ 23.321336] #0: (rcu_read_lock){....}, at: [<000000009f49ecac>] SyS_bpf+0x1105/0x4860 [ 23.321359] [ 23.321359] stack backtrace: [ 23.321366] CPU: 1 PID: 3657 Comm: syzkaller703595 Not tainted 4.15.0-rc8+ #1 [ 23.321370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.321373] Call Trace: [ 23.321384] dump_stack+0x194/0x257 [ 23.321398] ? arch_local_irq_restore+0x53/0x53 [ 23.321425] lockdep_rcu_suspicious+0x123/0x170 [ 23.321440] ___might_sleep+0x385/0x470 [ 23.321449] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 23.321459] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 23.321471] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.321485] __might_sleep+0x95/0x190 [ 23.321501] __kmalloc+0x2c5/0x760 [ 23.321519] ? trie_get_next_key+0x517/0xf10 [ 23.321536] trie_get_next_key+0x517/0xf10 [ 23.321564] ? trie_lookup_elem+0x7d0/0x7d0 [ 23.321598] ? lock_acquire+0x1d5/0x580 [ 23.321605] ? lock_acquire+0x1d5/0x580 [ 23.321612] ? SyS_bpf+0x1105/0x4860 [ 23.321630] ? lock_release+0xa40/0xa40 [ 23.321640] ? rcu_read_lock_sched_held+0x108/0x120 [ 23.321648] ? __kmalloc+0x46e/0x760 [ 23.321658] ? rcutorture_record_progress+0x10/0x10 [ 23.321668] ? SyS_bpf+0x10bd/0x4860 [ 23.321683] SyS_bpf+0x11b4/0x4860 [ 23.321701] ? bpf_prog_get+0x20/0x20 [ 23.321714] ? lock_release+0xa40/0xa40 [ 23.321731] ? do_raw_spin_trylock+0x190/0x190 [ 23.321756] ? _raw_spin_unlock+0x22/0x30 [ 23.321766] ? __handle_mm_fault+0x80e/0x3ce0 [ 23.321781] ? check_noncircular+0x20/0x