================================================================================ UBSAN: Undefined behaviour in net/sunrpc/xprt.c:568:22 shift exponent 127 is too large for 64-bit type 'long unsigned int' CPU: 0 PID: 16783 Comm: syz-executor.1 Not tainted 4.19.150-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 xprt_reset_majortimeo+0x2f8/0x3b0 net/sunrpc/xprt.c:568 xprt_request_init net/sunrpc/xprt.c:1290 [inline] xprt_do_reserve+0x438/0x530 net/sunrpc/xprt.c:1300 xprt_reserve+0x129/0x1f0 net/sunrpc/xprt.c:1322 __rpc_execute+0x1f7/0xb80 net/sunrpc/sched.c:783 rpc_execute+0x242/0x370 net/sunrpc/sched.c:851 rpc_run_task+0x4e3/0x6a0 net/sunrpc/clnt.c:1064 rpc_call_sync+0xb8/0x190 net/sunrpc/clnt.c:1093 rpc_ping+0xb5/0x110 net/sunrpc/clnt.c:2527 rpc_create_xprt+0x313/0x3c0 net/sunrpc/clnt.c:479 rpc_create+0x31e/0x540 net/sunrpc/clnt.c:587 nfs_create_rpc_client+0x36f/0x440 fs/nfs/client.c:529 nfs_init_client fs/nfs/client.c:640 [inline] nfs_init_client+0x6d/0x100 fs/nfs/client.c:627 nfs_get_client+0xf9f/0x13e0 fs/nfs/client.c:431 nfs_init_server+0x249/0xe10 fs/nfs/client.c:676 nfs_create_server+0x7a/0x4f0 fs/nfs/client.c:960 nfs_try_mount+0x172/0x940 fs/nfs/super.c:1884 nfs_fs_mount+0x171f/0x2e8e fs/nfs/super.c:2701 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: 0033:0x45de59 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:00007fc86bfc9c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000021740 RCX: 000000000045de59 RDX: 0000000020fb5ffc RSI: 0000000020000140 RDI: 0000000000000000 RBP: 000000000118c018 R08: 000000002000a000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bfd4 R13: 00007ffce747a41f R14: 00007fc86bfca9c0 R15: 000000000118bfd4 ================================================================================ overlayfs: unrecognized mount option "upperdXr=./Xile0" or missing value overlayfs: unrecognized mount option "upperdXr=./Xile0" or missing value overlayfs: unrecognized mount option "upperdXr=./Xile0" or missing value netlink: 1180 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor.5'. audit: type=1400 audit(1602915172.047:90): avc: denied { getattr } for pid=16856 comm="syz-executor.1" path="socket:[53869]" dev="sockfs" ino=53869 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1 gfs2: invalid mount option: ÇaÒ*x@¢5uòÜÁuìÖ gfs2: can't parse mount arguments vivid-001: disconnect vivid-001: reconnect vivid-001: disconnect vivid-001: reconnect netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on loop1 Bluetooth: hci3: command 0x0406 tx timeout netlink: 40 bytes leftover after parsing attributes in process `syz-executor.3'. IPVS: ftp: loaded support on port[0] = 21 netlink: 40 bytes leftover after parsing attributes in process `syz-executor.3'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1000 sclass=netlink_route_socket pid=17000 comm=syz-executor.4 IPVS: ftp: loaded support on port[0] = 21 squashfs: SQUASHFS error: unable to read xattr id index table IPVS: ftp: loaded support on port[0] = 21 batman_adv: Cannot find parent device EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop3): ext4_dirent_csum_verify:368: inode #2: comm syz-executor.3: No space for directory leaf checksum. Please run e2fsck -D. audit: type=1804 audit(1602915179.908:91): pid=17185 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-testdir431534052/syzkaller.I0BNI7/95/file1/file0" dev="loop4" ino=12 res=1 EXT4-fs error (device loop3): htree_dirblock_to_tree:995: inode #2: comm syz-executor.3: Directory block failed checksum