Warning: Permanently added '10.128.1.38' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 69.562995][ T8411] ================================================================================ [ 69.572707][ T8411] UBSAN: shift-out-of-bounds in net/sunrpc/xprt.c:658:14 [ 69.580712][ T8411] shift exponent 536870976 is too large for 64-bit type 'unsigned long' [ 69.589387][ T8411] CPU: 1 PID: 8411 Comm: syz-executor902 Not tainted 5.11.0-rc6-syzkaller #0 [ 69.598139][ T8411] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.608202][ T8411] Call Trace: [ 69.611487][ T8411] dump_stack+0x137/0x1be [ 69.615823][ T8411] ? __ubsan_handle_shift_out_of_bounds+0x277/0x4d0 [ 69.622411][ T8411] __ubsan_handle_shift_out_of_bounds+0x432/0x4d0 [ 69.628987][ T8411] ? ktime_get+0x126/0x290 [ 69.633421][ T8411] ? lockdep_hardirqs_on+0x8d/0x130 [ 69.638608][ T8411] ? xprt_do_reserve+0x5ba/0x770 [ 69.643536][ T8411] ? ktime_get+0x245/0x290 [ 69.647958][ T8411] xprt_do_reserve+0x751/0x770 [ 69.652709][ T8411] ? trace_rpc_request+0x260/0x260 [ 69.657901][ T8411] ? trace_rpc_request+0x260/0x260 [ 69.663004][ T8411] __rpc_execute+0x1e1/0xb00 [ 69.667821][ T8411] rpc_run_task+0x5a4/0x740 [ 69.672329][ T8411] rpc_create_xprt+0x2f3/0x700 [ 69.677118][ T8411] ? __ip_append_data+0xcc0/0x34b0 [ 69.682215][ T8411] rpc_create+0x5df/0x8a0 [ 69.686558][ T8411] nfs_create_rpc_client+0x5a0/0x740 [ 69.691838][ T8411] nfs_init_client+0x53/0xf0 [ 69.696431][ T8411] nfs_create_server+0x82d/0x2130 [ 69.701463][ T8411] ? rcu_read_lock_sched_held+0x41/0xb0 [ 69.706998][ T8411] nfs_try_get_tree+0x385/0x1040 [ 69.711934][ T8411] ? get_nfs_version+0x235/0x250 [ 69.716883][ T8411] ? nfs_get_tree+0x104c/0x1450 [ 69.721811][ T8411] vfs_get_tree+0x86/0x270 [ 69.726229][ T8411] path_mount+0x17ad/0x2a00 [ 69.730722][ T8411] __se_sys_mount+0x28c/0x320 [ 69.735390][ T8411] ? lockdep_hardirqs_on+0x8d/0x130 [ 69.740609][ T8411] do_syscall_64+0x2d/0x70 [ 69.745189][ T8411] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 69.751077][ T8411] RIP: 0033:0x43ef89 [ 69.755571][ T8411] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 69.775181][ T8411] RSP: 002b:00007ffe0a856338 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 69.783597][ T8411] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 000000000043ef89 [ 69.791574][ T8411] RDX: 0000000020fb5ffc RSI: 0000000020000080 RDI: 00000000200000c0 [ 69.799548][ T8411] RBP: 0000000000402f70 R08: 000000002000a000 R09: 0000000000000000 [ 69.808212][ T8411] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403000 [ 69.816170][ T8411] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 69.825672][ T8411] ================================================================================ [ 69.834971][ T8411] Kernel panic - not syncing: panic_on_warn set ... [ 69.841561][ T8411] CPU: 1 PID: 8411 Comm: syz-executor902 Not tainted 5.11.0-rc6-syzkaller #0 [ 69.850328][ T8411] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.860371][ T8411] Call Trace: [ 69.863638][ T8411] dump_stack+0x137/0x1be [ 69.867970][ T8411] ? panic+0x1f3/0x800 [ 69.872026][ T8411] panic+0x291/0x800 [ 69.875915][ T8411] ? __ubsan_handle_shift_out_of_bounds+0x455/0x4d0 [ 69.882516][ T8411] ? trace_hardirqs_on+0x30/0x80 [ 69.887454][ T8411] __ubsan_handle_shift_out_of_bounds+0x4cc/0x4d0 [ 69.893873][ T8411] ? ktime_get+0x126/0x290 [ 69.898274][ T8411] ? lockdep_hardirqs_on+0x8d/0x130 [ 69.903471][ T8411] ? xprt_do_reserve+0x5ba/0x770 [ 69.908405][ T8411] ? ktime_get+0x245/0x290 [ 69.912809][ T8411] xprt_do_reserve+0x751/0x770 [ 69.917570][ T8411] ? trace_rpc_request+0x260/0x260 [ 69.922663][ T8411] ? trace_rpc_request+0x260/0x260 [ 69.927754][ T8411] __rpc_execute+0x1e1/0xb00 [ 69.932356][ T8411] rpc_run_task+0x5a4/0x740 [ 69.936849][ T8411] rpc_create_xprt+0x2f3/0x700 [ 69.941606][ T8411] ? __ip_append_data+0xcc0/0x34b0 [ 69.946717][ T8411] rpc_create+0x5df/0x8a0 [ 69.951247][ T8411] nfs_create_rpc_client+0x5a0/0x740 [ 69.956534][ T8411] nfs_init_client+0x53/0xf0 [ 69.961113][ T8411] nfs_create_server+0x82d/0x2130 [ 69.966150][ T8411] ? rcu_read_lock_sched_held+0x41/0xb0 [ 69.971686][ T8411] nfs_try_get_tree+0x385/0x1040 [ 69.976611][ T8411] ? get_nfs_version+0x235/0x250 [ 69.981592][ T8411] ? nfs_get_tree+0x104c/0x1450 [ 69.986466][ T8411] vfs_get_tree+0x86/0x270 [ 69.991002][ T8411] path_mount+0x17ad/0x2a00 [ 69.995508][ T8411] __se_sys_mount+0x28c/0x320 [ 70.000350][ T8411] ? lockdep_hardirqs_on+0x8d/0x130 [ 70.005541][ T8411] do_syscall_64+0x2d/0x70 [ 70.009943][ T8411] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 70.015833][ T8411] RIP: 0033:0x43ef89 [ 70.019721][ T8411] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 70.039319][ T8411] RSP: 002b:00007ffe0a856338 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 70.048266][ T8411] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 000000000043ef89 [ 70.056341][ T8411] RDX: 0000000020fb5ffc RSI: 0000000020000080 RDI: 00000000200000c0 [ 70.064313][ T8411] RBP: 0000000000402f70 R08: 000000002000a000 R09: 0000000000000000 [ 70.072507][ T8411] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000403000 [ 70.080472][ T8411] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 70.089167][ T8411] Kernel Offset: disabled [ 70.093567][ T8411] Rebooting in 86400 seconds..