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. [ 74.975696][ T26] kauditd_printk_skb: 6 callbacks suppressed [ 74.975707][ T26] audit: type=1800 audit(1571113872.007:39): pid=8972 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 75.004487][ T26] audit: type=1800 audit(1571113872.007:40): pid=8972 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 77.472241][ T26] audit: type=1400 audit(1571113874.507:41): avc: denied { map } for pid=9149 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 '10.128.0.103' (ECDSA) to the list of known hosts. executing program executing program [ 109.354698][ T26] audit: type=1400 audit(1571113906.387:42): avc: denied { map } for pid=9161 comm="syz-executor811" path="/root/syz-executor811382860" dev="sda1" ino=1426 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 executing program executing program executing program executing program executing program [ 109.382320][ T26] audit: type=1400 audit(1571113906.387:43): avc: denied { map } for pid=9162 comm="syz-executor811" path="/root/file0/mem" dev="devtmpfs" ino=16187 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:memory_device_t:s0 tclass=chr_file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 132.586305][ T3010] check: Corrupted low memory at 000000007d44ae95 (2900 phys) = 000000e8 [ 132.594912][ T3010] ------------[ cut here ]------------ [ 132.602611][ T3010] Memory corruption detected in low memory [ 132.608925][ T3010] WARNING: CPU: 0 PID: 3010 at arch/x86/kernel/check.c:161 check_corruption+0x159/0x1fc [ 132.618751][ T3010] Kernel panic - not syncing: panic_on_warn set ... [ 132.625328][ T3010] CPU: 0 PID: 3010 Comm: kworker/0:2 Not tainted 5.4.0-rc3 #0 [ 132.632765][ T3010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 132.642819][ T3010] Workqueue: events check_corruption [ 132.648088][ T3010] Call Trace: [ 132.651382][ T3010] dump_stack+0x172/0x1f0 [ 132.655718][ T3010] ? check_corruption+0xc0/0x1fc [ 132.660649][ T3010] panic+0x2e3/0x75c [ 132.664526][ T3010] ? add_taint.cold+0x16/0x16 [ 132.669198][ T3010] ? __kasan_check_write+0x14/0x20 [ 132.674289][ T3010] ? __warn.cold+0x14/0x35 [ 132.678685][ T3010] ? __warn+0xd9/0x1d0 [ 132.682734][ T3010] ? check_corruption+0x159/0x1fc [ 132.687736][ T3010] __warn.cold+0x2f/0x35 [ 132.691967][ T3010] ? check_corruption+0x159/0x1fc [ 132.696981][ T3010] report_bug+0x289/0x300 [ 132.701299][ T3010] do_error_trap+0x11b/0x200 [ 132.705876][ T3010] do_invalid_op+0x37/0x50 [ 132.710279][ T3010] ? check_corruption+0x159/0x1fc [ 132.715289][ T3010] invalid_op+0x23/0x30 [ 132.719433][ T3010] RIP: 0010:check_corruption+0x159/0x1fc [ 132.725044][ T3010] Code: 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 80 3d 72 92 8f 08 00 75 a2 48 c7 c7 60 68 a8 87 c6 05 62 92 8f 08 01 e8 8f 0a 12 00 <0f> 0b eb 8b 48 89 df 89 55 d0 e8 78 22 7c 00 8b 55 d0 e9 4e ff ff [ 132.744777][ T3010] RSP: 0018:ffff88809ff57cf8 EFLAGS: 00010286 [ 132.750837][ T3010] RAX: 0000000000000000 RBX: ffff888000010000 RCX: 0000000000000000 [ 132.758869][ T3010] RDX: 0000000000000000 RSI: ffffffff815cb5a6 RDI: ffffed1013feaf91 [ 132.766958][ T3010] RBP: ffff88809ff57d30 R08: ffff88809ff14600 R09: ffffed1015d06159 [ 132.774914][ T3010] R10: ffffed1015d06158 R11: ffff8880ae830ac7 R12: ffff888000010000 [ 132.782869][ T3010] R13: 0000000000000001 R14: dffffc0000000000 R15: ffff888000000000 [ 132.790840][ T3010] ? vprintk_func+0x86/0x189 [ 132.795437][ T3010] ? check_corruption+0x159/0x1fc [ 132.800449][ T3010] process_one_work+0x9af/0x1740 [ 132.805391][ T3010] ? pwq_dec_nr_in_flight+0x320/0x320 [ 132.810761][ T3010] ? lock_acquire+0x190/0x410 [ 132.815427][ T3010] worker_thread+0x98/0xe40 [ 132.819912][ T3010] ? trace_hardirqs_on+0x67/0x240 [ 132.824931][ T3010] kthread+0x361/0x430 [ 132.828980][ T3010] ? process_one_work+0x1740/0x1740 [ 132.834197][ T3010] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 132.840429][ T3010] ret_from_fork+0x24/0x30 [ 132.846434][ T3010] Kernel Offset: disabled [ 132.850841][ T3010] Rebooting in 86400 seconds..