================================================================================ UBSAN: Undefined behaviour in drivers/vhost/vhost.c:116:62 load of value 255 is not a valid value for type '_Bool' CPU: 0 PID: 24619 Comm: syz-executor.3 Not tainted 4.19.152-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x22c/0x33e lib/dump_stack.c:118 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161 __ubsan_handle_load_invalid_value.cold+0x63/0x6f lib/ubsan.c:454 vhost_init_is_le drivers/vhost/vhost.c:116 [inline] vhost_reset_is_le drivers/vhost/vhost.c:143 [inline] vhost_vq_reset.constprop.0.cold+0x15/0x1a drivers/vhost/vhost.c:325 vhost_dev_init+0x442/0x780 drivers/vhost/vhost.c:463 vhost_net_open+0x54c/0x730 drivers/vhost/net.c:1103 misc_open+0x372/0x4a0 drivers/char/misc.c:141 chrdev_open+0x266/0x770 fs/char_dev.c:423 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x7d5/0x2e90 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45de59 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fca10a09c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000024a80 RCX: 000000000045de59 RDX: 0000000000000002 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 000000000118c010 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bfd4 R13: 00007ffe07a5ba1f R14: 00007fca10a0a9c0 R15: 000000000118bfd4 ================================================================================ audit: type=1800 audit(1603228469.529:40): pid=24631 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed comm="syz-executor.0" name="cgroup.controllers" dev="sda1" ino=17140 res=0 sctp: [Deprecated]: syz-executor.3 (pid 24624) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. team0: Device ipvlan1 failed to register rx_handler syz-executor.1 (24720) used greatest stack depth: 23104 bytes left nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. TCP: request_sock_TCP: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. mmap: syz-executor.0 (24745) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.rst. audit: type=1804 audit(1603228472.589:41): pid=24771 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir166593812/syzkaller.fMTCAF/1258/file0" dev="sda1" ino=17146 res=1 ipt_CLUSTERIP: ipt_CLUSTERIP is deprecated and it will removed soon, use xt_cluster instead x_tables: ip_tables: rpfilter match: used from hooks INPUT, but only valid from PREROUTING x_tables: ip_tables: rpfilter match: used from hooks INPUT, but only valid from PREROUTING audit: type=1800 audit(1603228472.859:42): pid=24790 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.0" name="file1" dev="sda1" ino=17142 res=0 audit: type=1800 audit(1603228472.889:43): pid=24790 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.0" name="file1" dev="sda1" ino=17142 res=0 netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'. kvm [24819]: vcpu0, guest rIP: 0x145 Hyper-V unhandled rdmsr: 0x40000015 kvm [24819]: vcpu0, guest rIP: 0x145 Hyper-V unhandled rdmsr: 0x4000001a kvm [24819]: vcpu0, guest rIP: 0x145 Hyper-V unhandled rdmsr: 0x40000060 kvm [24819]: vcpu0, guest rIP: 0x145 Hyper-V unhandled rdmsr: 0x4000000d kvm [24819]: vcpu0, guest rIP: 0x145 Hyper-V unhandled rdmsr: 0x40000064 kvm [24819]: vcpu0, guest rIP: 0x145 Hyper-V unhandled rdmsr: 0x40000004 audit: type=1804 audit(1603228473.629:44): pid=24853 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir164514710/syzkaller.Mtt7uS/1210/file0" dev="sda1" ino=16770 res=1 kvm [24819]: vcpu0, guest rIP: 0x145 Hyper-V unhandled rdmsr: 0x4000003d kvm [24819]: vcpu0, guest rIP: 0x145 Hyper-V unhandled rdmsr: 0x40000004 kvm [24819]: vcpu0, guest rIP: 0x145 Hyper-V unhandled rdmsr: 0x4000003d kvm [24819]: vcpu0, guest rIP: 0x145 Hyper-V unhandled rdmsr: 0x40000004 PF_BRIDGE: br_mdb_parse() with invalid ifindex audit: type=1804 audit(1603228476.380:45): pid=24920 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir475989484/syzkaller.E5G3c6/1256/bus" dev="sda1" ino=17165 res=1 audit: type=1804 audit(1603228476.380:46): pid=24920 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir475989484/syzkaller.E5G3c6/1256/bus" dev="sda1" ino=17165 res=1 audit: type=1804 audit(1603228476.440:47): pid=24920 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.2" name="/root/syzkaller-testdir475989484/syzkaller.E5G3c6/1256/bus" dev="sda1" ino=17165 res=1 overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection. Process accounting resumed Process accounting resumed IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21