[ 43.238856][ T26] audit: type=1800 audit(1555328389.642:30): pid=8014 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: [ 58.146201][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 58.146216][ T26] audit: type=1400 audit(1555328404.562:35): avc: denied { map } for pid=8188 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 '10.128.10.51' (ECDSA) to the list of known hosts. executing program [ 64.498602][ T26] audit: type=1400 audit(1555328410.912:36): avc: denied { map } for pid=8200 comm="syz-executor618" path="/root/syz-executor618902571" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 64.502262][ T8200] WARNING: CPU: 0 PID: 8200 at include/linux/cpumask.h:121 io_uring_setup+0x13cd/0x1a30 [ 64.535301][ T8200] Kernel panic - not syncing: panic_on_warn set ... [ 64.541924][ T8200] CPU: 0 PID: 8200 Comm: syz-executor618 Not tainted 5.1.0-rc5 #68 [ 64.549800][ T8200] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.559849][ T8200] Call Trace: [ 64.563134][ T8200] dump_stack+0x172/0x1f0 [ 64.567450][ T8200] ? io_uring_setup+0x1390/0x1a30 [ 64.572490][ T8200] panic+0x2cb/0x65c [ 64.576385][ T8200] ? __warn_printk+0xf3/0xf3 [ 64.581150][ T8200] ? io_uring_setup+0x13cd/0x1a30 [ 64.586176][ T8200] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.592414][ T8200] ? __warn.cold+0x5/0x45 [ 64.596743][ T8200] ? __warn+0xe8/0x1d0 [ 64.600794][ T8200] ? io_uring_setup+0x13cd/0x1a30 [ 64.605803][ T8200] __warn.cold+0x20/0x45 [ 64.610031][ T8200] ? io_uring_setup+0x13cd/0x1a30 [ 64.615158][ T8200] report_bug+0x263/0x2b0 [ 64.619483][ T8200] do_error_trap+0x11b/0x200 [ 64.624084][ T8200] do_invalid_op+0x37/0x50 [ 64.628479][ T8200] ? io_uring_setup+0x13cd/0x1a30 [ 64.633498][ T8200] invalid_op+0x14/0x20 [ 64.637648][ T8200] RIP: 0010:io_uring_setup+0x13cd/0x1a30 [ 64.643264][ T8200] 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 [ 64.662888][ T8200] RSP: 0018:ffff88808eb5fdc0 EFLAGS: 00010293 [ 64.668958][ T8200] RAX: ffff888094dc8280 RBX: 00000000fffffffe RCX: ffffffff81c814f7 [ 64.676919][ T8200] RDX: 0000000000000000 RSI: ffffffff81c81c3d RDI: 0000000000000005 [ 64.684904][ T8200] RBP: ffff88808eb5fef0 R08: ffff888094dc8280 R09: ffffed101226a89c [ 64.692912][ T8200] R10: ffffed101226a89b R11: ffff8880913544df R12: ffff88808e38c4c0 [ 64.700876][ T8200] R13: ffff88808eb5fec8 R14: ffff88808e38c550 R15: ffff88808e38c514 [ 64.708898][ T8200] ? io_uring_setup+0xc87/0x1a30 [ 64.713846][ T8200] ? io_uring_setup+0x13cd/0x1a30 [ 64.718883][ T8200] ? io_uring_release+0x50/0x50 [ 64.723734][ T8200] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 64.729303][ T8200] ? do_syscall_64+0x26/0x610 [ 64.733993][ T8200] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.740172][ T8200] ? do_syscall_64+0x26/0x610 [ 64.744875][ T8200] ? lockdep_hardirqs_on+0x418/0x5d0 [ 64.750156][ T8200] __x64_sys_io_uring_setup+0x54/0x80 [ 64.755544][ T8200] do_syscall_64+0x103/0x610 [ 64.760159][ T8200] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.766050][ T8200] RIP: 0033:0x440239 [ 64.769938][ T8200] 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 [ 64.789645][ T8200] RSP: 002b:00007ffe3a7ff708 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 [ 64.798097][ T8200] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440239 [ 64.806062][ T8200] RDX: 0000000000400b60 RSI: 0000000020000040 RDI: 000000000000014a [ 64.814019][ T8200] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 64.821989][ T8200] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000401ac0 [ 64.830124][ T8200] R13: 0000000000401b50 R14: 0000000000000000 R15: 0000000000000000 [ 64.839196][ T8200] Kernel Offset: disabled [ 64.843616][ T8200] Rebooting in 86400 seconds..