================================================================================ UBSAN: Undefined behaviour in drivers/vhost/vhost.c:116:62 load of value 156 is not a valid value for type '_Bool' CPU: 0 PID: 27964 Comm: syz-executor.1 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:00007f9692f4cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000024a80 RCX: 000000000045de59 RDX: 0000000000000002 RSI: 0000000020011a40 RDI: 00000000ffffff9c RBP: 000000000118bf68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007fff9fcbd78f R14: 00007f9692f4d9c0 R15: 000000000118bf2c ================================================================================ Dev loop4: unable to read RDB block 1 loop4: unable to read partition table loop4: partition table beyond EOD, truncated loop_reread_partitions: partition scan of loop4 () failed (rc=-5) audit: type=1326 audit(1603242880.564:103): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=27985 comm="syz-executor.0" exe="/root/syz-executor.0" sig=31 arch=c000003e syscall=228 compat=0 ip=0x460cba code=0x0 audit: type=1326 audit(1603242881.154:104): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=27985 comm="syz-executor.0" exe="/root/syz-executor.0" sig=31 arch=c000003e syscall=228 compat=0 ip=0x460cba code=0x0 input: syz1 as /devices/virtual/input/input22 bridge0: port 2(bridge_slave_1) entered disabled state bridge0: port 1(bridge_slave_0) entered disabled state input: syz1 as /devices/virtual/input/input23 device bridge0 entered promiscuous mode netlink: 14 bytes leftover after parsing attributes in process `syz-executor.2'. bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state device bridge0 left promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready bridge0: port 2(bridge_slave_1) entered disabled state bridge0: port 1(bridge_slave_0) entered disabled state device bridge0 entered promiscuous mode netlink: 32 bytes leftover after parsing attributes in process `syz-executor.0'. IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 Failed to obtain node identity Enabling of bearer rejected, failed to enable media Failed to obtain node identity Enabling of bearer rejected, failed to enable media erofs: read_super, device -> /dev/loop0 erofs: options -> erofs: cannot read erofs superblock sctp: [Deprecated]: syz-executor.0 (pid 28236) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead netlink: 256 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 25 bytes leftover after parsing attributes in process `syz-executor.2'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=106 sclass=netlink_route_socket pid=28283 comm=syz-executor.2 bridge0: port 3(veth5) entered blocking state bridge0: port 3(veth5) entered disabled state device veth5 entered promiscuous mode netlink: 256 bytes leftover after parsing attributes in process `syz-executor.2'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=106 sclass=netlink_route_socket pid=28324 comm=syz-executor.2 netlink: 25 bytes leftover after parsing attributes in process `syz-executor.2'. bridge0: port 4(veth7) entered blocking state bridge0: port 4(veth7) entered disabled state device veth7 entered promiscuous mode