[ 44.997069][ T26] audit: type=1800 audit(1553549075.290:30): pid=8154 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 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: [ 49.458425][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 49.458441][ T26] audit: type=1400 audit(1553549079.780:35): avc: denied { map } for pid=8328 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 '10.128.15.207' (ECDSA) to the list of known hosts. [ 55.963798][ T26] audit: type=1400 audit(1553549086.290:36): avc: denied { map } for pid=8340 comm="syz-executor586" path="/root/syz-executor586941650" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 161.009133][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 161.016405][ C1] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8340 [ 161.023875][ C1] rcu: (detected by 1, t=10502 jiffies, g=5905, q=81) [ 161.031272][ C1] syz-executor586 R running task 27832 8340 8338 0x00000000 [ 161.039353][ C1] Call Trace: [ 161.042641][ C1] __schedule+0x817/0x1cc0 [ 161.047049][ C1] ? __sched_text_start+0x8/0x8 [ 161.052034][ C1] ? kasan_check_write+0x14/0x20 [ 161.056976][ C1] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 161.062782][ C1] ? preempt_schedule+0x4b/0x60 [ 161.067630][ C1] preempt_schedule_common+0x4f/0xe0 [ 161.073186][ C1] preempt_schedule+0x4b/0x60 [ 161.077857][ C1] ___preempt_schedule+0x16/0x18 [ 161.082788][ C1] __sched_setscheduler+0x12fb/0x1e70 [ 161.088311][ C1] ? cpu_cgroup_fork+0xd0/0xd0 [ 161.093096][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 161.099451][ C1] ? kasan_check_read+0x11/0x20 [ 161.104326][ C1] __x64_sys_sched_setattr+0x184/0x2b0 [ 161.109782][ C1] ? __ia32_sys_sched_setparam+0x80/0x80 [ 161.115470][ C1] ? kasan_check_write+0x14/0x20 [ 161.120448][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 161.126002][ C1] ? lockdep_hardirqs_on+0x418/0x5d0 [ 161.131269][ C1] ? trace_hardirqs_on+0x67/0x230 [ 161.136290][ C1] do_syscall_64+0x103/0x610 [ 161.140891][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 161.146770][ C1] RIP: 0033:0x4403c9 [ 161.150694][ C1] Code: 76 77 78 5d 20 5b 2d 6c 3c 68 6f 73 74 6c 69 73 74 3e 5d 20 5b 2d 73 3c 64 6f 6d 61 69 6e 6c 69 73 74 3e 5d 0a 20 20 20 20 20 <20> 20 20 20 20 20 20 20 20 20 20 5b 2d 66 3c 63 6f 6e 66 66 69 6c [ 161.170494][ C1] RSP: 002b:00007ffea1a49298 EFLAGS: 00000246 ORIG_RAX: 000000000000013a [ 161.178993][ C1] RAX: ffffffffffffffda RBX: 00007ffea1a49340 RCX: 00000000004403c9 [ 161.186950][ C1] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000000 [ 161.194924][ C1] RBP: 0000000000000000 R08: 0000000000002b80 R09: 0000000000400d10 [ 161.203018][ C1] R10: 000000000000f8f8 R11: 0000000000000246 R12: 0000000000401c90 [ 161.211013][ C1] R13: 0000000000401d20 R14: 0000000000000000 R15: 0000000000000000 [ 161.219019][ C1] syz-executor586 R running task 27832 8340 8338 0x00000000 [ 161.227103][ C1] Call Trace: [ 161.230454][ C1] __schedule+0x817/0x1cc0 [ 161.234886][ C1] ? __sched_text_start+0x8/0x8 [ 161.239717][ C1] ? kasan_check_write+0x14/0x20 [ 161.244642][ C1] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 161.250729][ C1] ? preempt_schedule+0x4b/0x60 [ 161.255625][ C1] preempt_schedule_common+0x4f/0xe0 [ 161.260961][ C1] preempt_schedule+0x4b/0x60 [ 161.265909][ C1] ___preempt_schedule+0x16/0x18 [ 161.270958][ C1] __sched_setscheduler+0x12fb/0x1e70 [ 161.276370][ C1] ? cpu_cgroup_fork+0xd0/0xd0 [ 161.281125][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 161.287359][ C1] ? kasan_check_read+0x11/0x20 [ 161.292201][ C1] __x64_sys_sched_setattr+0x184/0x2b0 [ 161.297943][ C1] ? __ia32_sys_sched_setparam+0x80/0x80 [ 161.303571][ C1] ? kasan_check_write+0x14/0x20 [ 161.308504][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 161.313958][ C1] ? lockdep_hardirqs_on+0x418/0x5d0 [ 161.319345][ C1] ? trace_hardirqs_on+0x67/0x230 [ 161.324361][ C1] do_syscall_64+0x103/0x610 [ 161.329089][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 161.334969][ C1] RIP: 0033:0x4403c9 [ 161.338911][ C1] Code: 76 77 78 5d 20 5b 2d 6c 3c 68 6f 73 74 6c 69 73 74 3e 5d 20 5b 2d 73 3c 64 6f 6d 61 69 6e 6c 69 73 74 3e 5d 0a 20 20 20 20 20 <20> 20 20 20 20 20 20 20 20 20 20 5b 2d 66 3c 63 6f 6e 66 66 69 6c [ 161.358741][ C1] RSP: 002b:00007ffea1a49298 EFLAGS: 00000246 ORIG_RAX: 000000000000013a [ 161.367399][ C1] RAX: ffffffffffffffda RBX: 00007ffea1a49340 RCX: 00000000004403c9 [ 161.375427][ C1] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000000 [ 161.383974][ C1] RBP: 0000000000000000 R08: 0000000000002b80 R09: 0000000000400d10 [ 161.392608][ C1] R10: 000000000000f8f8 R11: 0000000000000246 R12: 0000000000401c90 [ 161.400755][ C1] R13: 0000000000401d20 R14: 0000000000000000 R15: 0000000000000000