================================================================================ UBSAN: Undefined behaviour in net/sunrpc/xprt.c:568:22 shift exponent 536871040 is too large for 64-bit type 'long unsigned int' CPU: 1 PID: 11426 Comm: syz-executor.0 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 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:00007fa3217dec78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000021740 RCX: 000000000045de59 RDX: 000000002015bffc RSI: 0000000020000240 RDI: 0000000000000000 RBP: 000000000118bf70 R08: 0000000020000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffe1477c4ef R14: 00007fa3217df9c0 R15: 000000000118bf2c ================================================================================ XFS (loop5): Invalid superblock magic number XFS (loop5): Invalid superblock magic number mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium netlink: 20 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.3'. audit: type=1400 audit(1603301829.883:24): avc: denied { setopt } for pid=11648 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=socket permissive=1 netlink: 96 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 96 bytes leftover after parsing attributes in process `syz-executor.3'. squashfs: SQUASHFS error: unable to read xattr id index table netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. squashfs: SQUASHFS error: unable to read xattr id index table netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. qnx6: invalid mount options. Unknown ioctl 35298 Unknown ioctl 35298 qnx6: invalid mount options. kvm [11744]: vcpu0, guest rIP: 0x14c Hyper-V uhandled wrmsr: 0x4000007a data 0xff64 kvm [11744]: vcpu0, guest rIP: 0x14c Hyper-V uhandled wrmsr: 0x4000003a data 0xfe5e kvm [11744]: vcpu0, guest rIP: 0x14c Hyper-V uhandled wrmsr: 0x4000004e data 0xfe15 kvm [11744]: vcpu0, guest rIP: 0x14c Hyper-V uhandled wrmsr: 0x4000001b data 0xfec7 kvm [11744]: vcpu0, guest rIP: 0x14c Hyper-V uhandled wrmsr: 0x4000006d data 0xfe36 md: could not open unknown-block(259,0). md: md_import_device returned -6 audit: type=1800 audit(1603301832.003:25): pid=11822 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed comm="syz-executor.3" name="bus" dev="sda1" ino=15994 res=0 audit: type=1800 audit(1603301833.973:26): pid=11884 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed comm="syz-executor.2" name="bus" dev="sda1" ino=15991 res=0 print_req_error: I/O error, dev loop6, sector 128 Buffer I/O error on dev loop6, logical block 16, lost async page write netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 'syz-executor.2': attribute type 10 has an invalid length. netlink: 'syz-executor.2': attribute type 10 has an invalid length. print_req_error: I/O error, dev loop6, sector 128 Buffer I/O error on dev loop6, logical block 16, lost async page write print_req_error: I/O error, dev loop6, sector 136 Buffer I/O error on dev loop6, logical block 17, lost async page write print_req_error: I/O error, dev loop6, sector 144 Buffer I/O error on dev loop6, logical block 18, lost async page write print_req_error: I/O error, dev loop6, sector 152 Buffer I/O error on dev loop6, logical block 19, lost async page write print_req_error: I/O error, dev loop6, sector 160 Buffer I/O error on dev loop6, logical block 20, lost async page write print_req_error: I/O error, dev loop6, sector 168 Buffer I/O error on dev loop6, logical block 21, lost async page write print_req_error: I/O error, dev loop6, sector 176 Buffer I/O error on dev loop6, logical block 22, lost async page write print_req_error: I/O error, dev loop6, sector 184 Buffer I/O error on dev loop6, logical block 23, lost async page write print_req_error: I/O error, dev loop6, sector 192 Buffer I/O error on dev loop6, logical block 24, lost async page write overlayfs: option "workdir=./bus\," is useless in a non-upper mount, ignore overlayfs: missing 'lowerdir' overlayfs: option "workdir=./bus\," is useless in a non-upper mount, ignore overlayfs: missing 'lowerdir' overlayfs: conflicting lowerdir path