validate_nla: 2 callbacks suppressed netlink: 'syz-executor.4': attribute type 1 has an invalid length. ================================================================================ UBSAN: Undefined behaviour in fs/ext4/super.c:3763:25 shift exponent 65507 is too large for 32-bit type 'int' CPU: 1 PID: 16070 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_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422 ext4_fill_super.cold+0x33b/0x4ea fs/ext4/super.c:3763 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x318 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x51c/0x2f10 fs/namespace.c:2799 ksys_mount+0xcf/0x130 fs/namespace.c:3015 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3026 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4608aa Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007f01cfc66a88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f01cfc66b20 RCX: 00000000004608aa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f01cfc66ae0 RBP: 00007f01cfc66ae0 R08: 00007f01cfc66b20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020014a00 ================================================================================ EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue netlink: 'syz-executor.4': attribute type 1 has an invalid length. netlink: 'syz-executor.4': attribute type 1 has an invalid length. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. FAT-fs (loop2): Unrecognized mount option "umask€èH00000000000YÓšÐ\0" or missing value netlink: 'syz-executor.4': attribute type 1 has an invalid length. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. EXT4-fs (loop3): unsupported inode size: 0 EXT4-fs (loop3): blocksize: 8192 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue netlink: 'syz-executor.4': attribute type 1 has an invalid length. netlink: 'syz-executor.4': attribute type 1 has an invalid length. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. FAT-fs (loop2): Unrecognized mount option "umask€èH00000000000YÓšÐ\0" or missing value attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue netlink: 'syz-executor.4': attribute type 1 has an invalid length. EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 netlink: 'syz-executor.4': attribute type 1 has an invalid length. EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 attempt to access beyond end of device loop2: rw=2049, want=230, limit=127 attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 netlink: 'syz-executor.4': attribute type 1 has an invalid length. audit: type=1804 audit(1603166740.253:46): pid=16307 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir929337295/syzkaller.BqKHJk/431/bus" dev="sda1" ino=16773 res=1 netlink: 'syz-executor.4': attribute type 1 has an invalid length. audit: type=1804 audit(1603166740.363:47): pid=16321 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.4" name="/root/syzkaller-testdir929337295/syzkaller.BqKHJk/431/bus" dev="sda1" ino=16773 res=1 audit: type=1804 audit(1603166740.363:48): pid=16307 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir929337295/syzkaller.BqKHJk/431/bus" dev="sda1" ino=16773 res=1 netlink: 176 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 176 bytes leftover after parsing attributes in process `syz-executor.4'. net_ratelimit: 21 callbacks suppressed TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. attempt to access beyond end of device Unknown ioctl 1075331408 loop0: rw=2049, want=230, limit=127 Unknown ioctl 1075331408 Unknown ioctl 44672 Unknown ioctl 44672 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. validate_nla: 2 callbacks suppressed netlink: 'syz-executor.4': attribute type 1 has an invalid length. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 IPVS: length: 205 != 24 attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 IPVS: ftp: loaded support on port[0] = 21 IPVS: length: 205 != 24 attempt to access beyond end of device IPVS: ftp: loaded support on port[0] = 21 loop0: rw=2049, want=230, limit=127 attempt to access beyond end of device loop0: rw=2049, want=230, limit=127 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=14089 sclass=netlink_route_socket pid=16606 comm=syz-executor.2 netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=14089 sclass=netlink_route_socket pid=16606 comm=syz-executor.2 netlink: 8 bytes leftover after parsing attributes in process `syz-executor.2'. IPv6 header not found IPv6 header not found IPv6 header not found IPv6 header not found IPv6 header not found IPv6 header not found net_ratelimit: 19 callbacks suppressed TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. netlink: 'syz-executor.4': attribute type 1 has an invalid length.