[ 48.825047][ T26] audit: type=1800 audit(1555320627.075:30): pid=8233 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 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: [ 53.178769][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 53.178784][ T26] audit: type=1400 audit(1555320631.455:35): avc: denied { map } for pid=8410 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 '10.128.0.32' (ECDSA) to the list of known hosts. executing program [ 59.754495][ T26] audit: type=1400 audit(1555320638.025:36): avc: denied { map } for pid=8422 comm="syz-executor189" path="/root/syz-executor189049097" 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 [ 59.757606][ T8422] WARNING: CPU: 1 PID: 8422 at include/linux/cpumask.h:121 io_uring_setup+0x13cd/0x1a30 [ 59.791848][ T8422] Kernel panic - not syncing: panic_on_warn set ... [ 59.798426][ T8422] CPU: 1 PID: 8422 Comm: syz-executor189 Not tainted 5.1.0-rc5 #68 [ 59.806487][ T8422] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.817761][ T8422] Call Trace: [ 59.821085][ T8422] dump_stack+0x172/0x1f0 [ 59.825419][ T8422] ? io_uring_setup+0x1390/0x1a30 [ 59.830451][ T8422] panic+0x2cb/0x65c [ 59.835264][ T8422] ? __warn_printk+0xf3/0xf3 [ 59.839855][ T8422] ? io_uring_setup+0x13cd/0x1a30 [ 59.844973][ T8422] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.851289][ T8422] ? __warn.cold+0x5/0x45 [ 59.855595][ T8422] ? __warn+0xe8/0x1d0 [ 59.859681][ T8422] ? io_uring_setup+0x13cd/0x1a30 [ 59.871340][ T8422] __warn.cold+0x20/0x45 [ 59.875571][ T8422] ? io_uring_setup+0x13cd/0x1a30 [ 59.880581][ T8422] report_bug+0x263/0x2b0 [ 59.884924][ T8422] do_error_trap+0x11b/0x200 [ 59.889521][ T8422] do_invalid_op+0x37/0x50 [ 59.893918][ T8422] ? io_uring_setup+0x13cd/0x1a30 [ 59.898932][ T8422] invalid_op+0x14/0x20 [ 59.910204][ T8422] RIP: 0010:io_uring_setup+0x13cd/0x1a30 [ 59.916142][ T8422] Code: 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 84 18 fe ff ff 48 8b bd e8 fe ff ff e8 2d 80 e0 ff e9 07 fe ff ff e8 73 70 a8 ff <0f> 0b e9 bc f8 ff ff e8 67 70 a8 ff 49 8d 84 24 88 00 00 00 48 89 [ 59.936516][ T8422] RSP: 0018:ffff88808db77dc0 EFLAGS: 00010293 [ 59.942576][ T8422] RAX: ffff888092652400 RBX: 00000000ffffffff RCX: ffffffff81c814f7 [ 59.950552][ T8422] RDX: 0000000000000000 RSI: ffffffff81c81c3d RDI: 0000000000000005 [ 59.960040][ T8422] RBP: ffff88808db77ef0 R08: ffff888092652400 R09: ffffed10119a6eac [ 59.968268][ T8422] R10: ffffed10119a6eab R11: ffff88808cd3755f R12: ffff88808c324cc0 [ 59.976235][ T8422] R13: ffff88808db77ec8 R14: ffff88808c324d50 R15: ffff88808c324d14 [ 59.984205][ T8422] ? io_uring_setup+0xc87/0x1a30 [ 59.989129][ T8422] ? io_uring_setup+0x13cd/0x1a30 [ 59.994152][ T8422] ? io_uring_release+0x50/0x50 [ 59.999154][ T8422] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 60.004600][ T8422] ? do_syscall_64+0x26/0x610 [ 60.009287][ T8422] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 60.015462][ T8422] ? do_syscall_64+0x26/0x610 [ 60.020137][ T8422] ? lockdep_hardirqs_on+0x418/0x5d0 [ 60.025497][ T8422] __x64_sys_io_uring_setup+0x54/0x80 [ 60.030966][ T8422] do_syscall_64+0x103/0x610 [ 60.035544][ T8422] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 60.041442][ T8422] RIP: 0033:0x440239 [ 60.045380][ T8422] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 60.064991][ T8422] RSP: 002b:00007ffe4bdc4988 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 [ 60.073474][ T8422] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440239 [ 60.081437][ T8422] RDX: 0000000000400b60 RSI: 0000000020000140 RDI: 000000000000014a [ 60.089395][ T8422] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 60.097366][ T8422] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000401ac0 [ 60.105319][ T8422] R13: 0000000000401b50 R14: 0000000000000000 R15: 0000000000000000 [ 60.114392][ T8422] Kernel Offset: disabled [ 60.118909][ T8422] Rebooting in 86400 seconds..