================================================================================
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: 23196 Comm: syz-executor.4 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:00007fa3af2dec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000024a80 RCX: 000000000045de59
RDX: 0000000000000002 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 000000000118c010 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bfd4
R13: 00007ffc3051911f R14: 00007fa3af2df9c0 R15: 000000000118bfd4
================================================================================
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
block nbd2: server does not support multiple connections per device.
block nbd2: shutting down sockets
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
NILFS (loop5): unable to read secondary superblock (blocksize = 1024)
NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024)
NILFS (loop5): mounting unchecked fs
NILFS (loop5): I/O error reading segment
NILFS (loop5): error -5 while searching super root
libceph: mon0 [d::]:6789 socket closed (con state CONNECTING)
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'.
IPv6: ADDRCONF(NETDEV_UP): vlan2: link is not ready
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.0'.
IPv6: ADDRCONF(NETDEV_UP): vlan3: link is not ready
NILFS (loop5): unable to read secondary superblock (blocksize = 1024)
NILFS (loop5): broken superblock, retrying with spare superblock (blocksize = 1024)
NILFS (loop5): mounting unchecked fs
NILFS (loop5): I/O error reading segment
NILFS (loop5): error -5 while searching super root
IPv6: ADDRCONF(NETDEV_UP): vlan4: link is not ready
ceph: No mds server is up or the cluster is laggy
device batadv_slave_1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): vlan5: link is not ready
Dev loop3: unable to read RDB block 14
 loop3: AHDI p1
loop3: partition table partially beyond EOD, truncated
Dev loop3: unable to read RDB block 14
 loop3: AHDI p1
loop3: partition table partially beyond EOD, truncated
tls_set_device_offload: netdev not found
Bluetooth: hci1: command 0x0405 tx timeout
Dev loop3: unable to read RDB block 14
 loop3: AHDI p1
loop3: partition table partially beyond EOD, truncated
Dev loop3: unable to read RDB block 14
 loop3: AHDI p1
loop3: partition table partially beyond EOD, truncated
ptrace attach of "/root/syz-executor.0"[23557] was attempted by "/root/syz-executor.0"[23569]
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.
ptrace attach of "/root/syz-executor.0"[23579] was attempted by "/root/syz-executor.0"[23585]
Dev loop3: unable to read RDB block 14
 loop3: AHDI p1
loop3: partition table partially beyond EOD, truncated
ptrace attach of "/root/syz-executor.1"[23591] was attempted by "/root/syz-executor.1"[23596]
ptrace attach of "/root/syz-executor.1"[23610] was attempted by "/root/syz-executor.1"[23619]
ptrace attach of "/root/syz-executor.0"[23608] was attempted by "/root/syz-executor.0"[23620]
ptrace attach of "/root/syz-executor.0"[23625] was attempted by "/root/syz-executor.0"[23631]
ptrace attach of "/root/syz-executor.1"[23630] was attempted by "/root/syz-executor.1"[23638]
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
xt_TPROXY: Can be used only with -p tcp or -p udp
audit: type=1400 audit(1603284270.250:10333): avc:  denied  { relabelto } for  pid=23738 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:sendmail_exec_t:s0 tclass=packet permissive=1
overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection.
IPVS: ftp: loaded support on port[0] = 21
overlayfs: filesystem on './file1' not supported as upperdir