syzkaller login: [ 15.883524][ T22] audit: type=1400 audit(1645137699.030:71): avc: denied { transition } for pid=266 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 15.887573][ T22] audit: type=1400 audit(1645137699.030:72): avc: denied { write } for pid=266 comm="sh" path="pipe:[10564]" dev="pipefs" ino=10564 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 Warning: Permanently added '10.128.1.78' (ECDSA) to the list of known hosts. executing program executing program [ 22.351065][ T22] audit: type=1400 audit(1645137705.500:73): avc: denied { execmem } for pid=299 comm="syz-executor265" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.370631][ T22] audit: type=1400 audit(1645137705.500:74): avc: denied { read write } for pid=300 comm="syz-executor265" name="vhost-vsock" dev="devtmpfs" ino=923 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 executing program executing program executing program executing program executing program [ 22.394685][ T22] audit: type=1400 audit(1645137705.500:75): avc: denied { open } for pid=300 comm="syz-executor265" path="/dev/vhost-vsock" dev="devtmpfs" ino=923 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 22.418596][ T22] audit: type=1400 audit(1645137705.500:76): avc: denied { ioctl } for pid=300 comm="syz-executor265" path="/dev/vhost-vsock" dev="devtmpfs" ino=923 ioctlcmd=0xaf01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t 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 [ 24.330738][ T623] ------------[ cut here ]------------ [ 24.336199][ T623] kernel BUG at drivers/vhost/vhost.c:2356! [ 24.342365][ T623] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 24.348449][ T623] CPU: 1 PID: 623 Comm: vhost-622 Not tainted 5.4.161-syzkaller-00007-g2426795494c7 #0 [ 24.358173][ T623] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.368330][ T623] RIP: 0010:vhost_get_vq_desc+0x2045/0x2050 [ 24.374202][ T623] Code: 0f 8c f6 fd ff ff 48 8b bc 24 48 01 00 00 e8 62 c4 59 fe 48 8b 94 24 48 01 00 00 e9 dc fd ff ff e8 90 4b 06 fe e8 ab a7 2c fe <0f> 0b 66 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 55 41 54 53 48 [ 24.394051][ T623] RSP: 0018:ffff8881eca7fbf8 EFLAGS: 00010293 [ 24.400106][ T623] RAX: ffffffff8333ffb5 RBX: 0000000000000000 RCX: ffff8881ed16ee40 [ 24.408085][ T623] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.416032][ T623] RBP: 0000000000000000 R08: ffffffff8333f4b7 R09: 0000000000000001 [ 24.424001][ T623] R10: ffffed103d94ff99 R11: 0000000000000000 R12: ffff8881eca7fe00 [ 24.431970][ T623] R13: dffffc0000000000 R14: 1ffff1103d94ff98 R15: 0000000000000000 [ 24.439922][ T623] FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 24.449151][ T623] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.455711][ T623] CR2: 0000000000000002 CR3: 00000001ec8a7000 CR4: 00000000003406e0 [ 24.463659][ T623] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.471604][ T623] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.479674][ T623] Call Trace: [ 24.482945][ T623] ? kmem_cache_alloc_trace+0x139/0x2b0 [ 24.488466][ T623] vhost_vsock_handle_tx_kick+0x1fb/0xc10 [ 24.494159][ T623] vhost_worker+0x299/0x430 [ 24.498659][ T623] kthread+0x30f/0x330 [ 24.502757][ T623] ? vhost_dev_set_owner+0x7d0/0x7d0 [ 24.508204][ T623] ? kthread_destroy_worker+0x1f0/0x1f0 [ 24.513746][ T623] ret_from_fork+0x1f/0x30 [ 24.518144][ T623] Modules linked in: [ 24.522216][ T623] ---[ end trace 5f1d8eb44728a400 ]--- [ 24.527735][ T623] RIP: 0010:vhost_get_vq_desc+0x2045/0x2050 [ 24.533776][ T623] Code: 0f 8c f6 fd ff ff 48 8b bc 24 48 01 00 00 e8 62 c4 59 fe 48 8b 94 24 48 01 00 00 e9 dc fd ff ff e8 90 4b 06 fe e8 ab a7 2c fe <0f> 0b 66 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 55 41 54 53 48 [ 24.553567][ T623] RSP: 0018:ffff8881eca7fbf8 EFLAGS: 00010293 [ 24.559804][ T623] RAX: ffffffff8333ffb5 RBX: 0000000000000000 RCX: ffff8881ed16ee40 [ 24.567845][ T623] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.576043][ T623] RBP: 0000000000000000 R08: ffffffff8333f4b7 R09: 0000000000000001 [ 24.584074][ T623] R10: ffffed103d94ff99 R11: 0000000000000000 R12: ffff8881eca7fe00 [ 24.592115][ T623] R13: dffffc0000000000 R14: 1ffff1103d94ff98 R15: 0000000000000000 [ 24.600130][ T623] FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 24.609089][ T623] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.615683][ T623] CR2: 0000000000000002 CR3: 00000001ec8a7000 CR4: 00000000003406e0 [ 24.624002][ T623] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.632103][ T623] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.640131][ T623] Kernel panic - not syncing: Fatal exception [ 24.646623][ T623] Kernel Offset: disabled [ 24.650930][ T623] Rebooting in 86400 seconds..