[ 40.750090] audit: type=1800 audit(1582019017.294:32): pid=7844 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 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: [ 45.982978] kauditd_printk_skb: 2 callbacks suppressed [ 45.982994] audit: type=1400 audit(1582019022.604:35): avc: denied { map } for pid=8020 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 '10.128.0.173' (ECDSA) to the list of known hosts. executing program [ 65.021877] audit: type=1400 audit(1582019041.644:36): avc: denied { map } for pid=8032 comm="syz-executor355" path="/root/syz-executor355131934" 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 [ 65.285550] WARNING: CPU: 1 PID: 8047 at kernel/signal.c:2329 get_signal+0x1bf9/0x1fc0 [ 65.294295] Kernel panic - not syncing: panic_on_warn set ... [ 65.294295] [ 65.301992] CPU: 1 PID: 8047 Comm: syz-executor355 Not tainted 4.19.104-syzkaller #0 [ 65.310081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.319864] Call Trace: [ 65.322457] dump_stack+0x197/0x210 [ 65.326088] panic+0x26a/0x50e [ 65.329441] ? __warn_printk+0xf3/0xf3 [ 65.333659] ? get_signal+0x1bf9/0x1fc0 [ 65.338591] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 65.344228] ? __warn.cold+0x5/0x53 [ 65.347843] ? __warn+0xe8/0x1d0 [ 65.351202] ? get_signal+0x1bf9/0x1fc0 [ 65.356138] __warn.cold+0x20/0x53 [ 65.359867] ? get_signal+0x1bf9/0x1fc0 [ 65.363968] report_bug+0x263/0x2b0 [ 65.367600] do_error_trap+0x204/0x360 [ 65.371475] ? math_error+0x340/0x340 [ 65.375354] ? error_entry+0x7c/0xe0 [ 65.379056] ? trace_hardirqs_off_caller+0x65/0x220 [ 65.384187] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 65.389076] do_invalid_op+0x1b/0x20 [ 65.393148] invalid_op+0x14/0x20 [ 65.397149] RIP: 0010:get_signal+0x1bf9/0x1fc0 [ 65.401730] Code: 84 db 0f 84 d5 e5 ff ff e8 24 5d 28 00 31 ff e8 cd d2 17 00 e9 c4 e5 ff ff e8 13 5d 28 00 0f 0b e9 dd fa ff ff e8 07 5d 28 00 <0f> 0b 41 bd 00 80 00 00 e9 7e f4 ff ff e8 85 fa 5f 00 e9 5e e9 ff [ 65.420629] RSP: 0018:ffff8880965cfc30 EFLAGS: 00010093 [ 65.431348] RAX: ffff8880943a2280 RBX: 0000000100000000 RCX: ffffffff81427434 [ 65.440528] RDX: 0000000000000000 RSI: ffffffff81427fb9 RDI: 0000000000000005 [ 65.457180] RBP: ffff8880965cfce8 R08: ffff8880943a2280 R09: ffffed10136b715a [ 65.466066] R10: ffffed10136b7159 R11: ffff88809b5b8acb R12: 0000000000000000 [ 65.473893] R13: 0000000000008000 R14: dffffc0000000000 R15: ffff8880943a2280 [ 65.481184] ? get_signal+0x1074/0x1fc0 [ 65.485158] ? get_signal+0x1bf9/0x1fc0 [ 65.489166] do_signal+0x95/0x1960 [ 65.492705] ? setup_sigcontext+0x7d0/0x7d0 [ 65.497032] ? finish_task_switch+0x146/0x7c0 [ 65.501512] ? find_held_lock+0x35/0x130 [ 65.505573] ? calculate_sigpending+0x87/0xa0 [ 65.510150] ? find_held_lock+0x35/0x130 [ 65.514365] ? calculate_sigpending+0x87/0xa0 [ 65.520373] ? finish_task_switch+0x146/0x7c0 [ 65.524874] ? exit_to_usermode_loop+0x43/0x2c0 [ 65.529641] ? syscall_return_slowpath+0x40a/0x4c0 [ 65.534587] ? exit_to_usermode_loop+0x43/0x2c0 [ 65.539251] ? lockdep_hardirqs_on+0x415/0x5d0 [ 65.543820] ? trace_hardirqs_on+0x67/0x220 [ 65.548221] exit_to_usermode_loop+0x244/0x2c0 [ 65.552798] syscall_return_slowpath+0x40a/0x4c0 [ 65.557553] ret_from_fork+0x15/0x30 [ 65.561872] RIP: 0033:0x446749 [ 65.565213] Code: e8 5c b3 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 0b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 65.584743] RSP: 002b:00007fae630dfdb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 65.592553] RAX: 0000000000000000 RBX: 00000000006dbc28 RCX: 0000000000446749 [ 65.600525] RDX: 9999999999999999 RSI: 0000000000000000 RDI: 000000000a01ffff [ 65.607891] RBP: 00000000006dbc20 R08: ffffffffffffffff R09: 0000000000000000 [ 65.615157] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 65.622517] R13: 00007fff74b7165f R14: 00007fae630e09c0 R15: 20c49ba5e353f7cf [ 65.631583] Kernel Offset: disabled [ 65.635379] Rebooting in 86400 seconds..