last executing test programs: 16.579411378s ago: executing program 0 (id=187): madvise(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x14) 14.270594713s ago: executing program 0 (id=189): r0 = socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$ethtool(&(0x7f0000000180), r0) sendmsg$ETHTOOL_MSG_WOL_GET(r0, &(0x7f0000000140)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000001c0)={0x14, r1, 0x1, 0x70bd2b, 0x0, {0x1b}}, 0x14}, 0x1, 0x0, 0x0, 0x26000810}, 0x20000000) 12.709083512s ago: executing program 1 (id=190): sendmsg$NFT_BATCH(0xffffffffffffffff, &(0x7f0000000400)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000030c0)=ANY=[], 0xe8}, 0x1, 0x0, 0x0, 0x80}, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/thread-self/fail-nth\x00', 0x2, 0x0) write(r0, &(0x7f0000000000)='3', 0x4e) ioctl$sock_SIOCETHTOOL(0xffffffffffffffff, 0x89f0, &(0x7f0000000240)={'bridge0\x00', &(0x7f0000000000)=@ethtool_ringparam={0xb, 0x0, 0x0, 0x3}}) syz_open_procfs(0x0, &(0x7f0000000080)='net/mcfilter\x00') 11.689678528s ago: executing program 0 (id=191): mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='sys_mnt\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='sys_mnt\x00', 0x0, 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000340)='sys_mnt/block/zram0/comp_algorithm\x00', 0x2001, 0x22) write(r0, &(0x7f0000000380)='z', 0x1) 10.121384128s ago: executing program 1 (id=192): r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000002040), 0x2, 0x0) mount$fuse(0x0, &(0x7f0000002080)='./file0\x00', &(0x7f0000000040), 0x1000000, &(0x7f0000000080)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x8000}, 0x2c, {}, 0x2c, {}, 0x2c, {[{@default_permissions}]}}) 6.621122699s ago: executing program 1 (id=193): madvise(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x14) 6.110786752s ago: executing program 0 (id=194): r0 = bpf$PROG_LOAD(0x5, &(0x7f0000000000)={0x1, 0x8, &(0x7f0000000780)=ANY=[@ANYBLOB="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"], &(0x7f0000000100)='GPL\x00'}, 0x94) r1 = bpf$MAP_CREATE_TAIL_CALL(0x0, &(0x7f0000001d40)=ANY=[@ANYBLOB="0300000004000000040000000a"], 0x48) bpf$MAP_UPDATE_ELEM_TAIL_CALL(0x2, &(0x7f0000000280)={{r1, 0xffffffffffffffff}, &(0x7f0000000200), &(0x7f0000000240)=r0}, 0x20) setsockopt$sock_attach_bpf(0xffffffffffffffff, 0x1, 0x32, &(0x7f00000000c0), 0x4) r3 = bpf$PROG_LOAD(0x5, &(0x7f0000000080)={0x1, 0x5, &(0x7f0000000ec0)=ANY=[@ANYBLOB="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&(0x7f0000000140)='GPL\x00'}, 0x48) bpf$MAP_UPDATE_ELEM_TAIL_CALL(0x2, &(0x7f0000000340)={{r2}, &(0x7f00000002c0), &(0x7f0000000300)=r3}, 0x20) sendmsg$inet(0xffffffffffffffff, &(0x7f0000000b40)={0x0, 0x0, 0x0}, 0x4040000) 4.945862269s ago: executing program 1 (id=195): r0 = socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$ethtool(&(0x7f0000000180), r0) sendmsg$ETHTOOL_MSG_WOL_GET(r0, &(0x7f0000000140)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000001c0)={0x18, r1, 0x1, 0x70bd2b, 0x0, {0x1b}, [@HEADER={0x4}]}, 0x18}, 0x1, 0x0, 0x0, 0x26000810}, 0x20000000) 3.379589809s ago: executing program 0 (id=196): r0 = socket$igmp6(0xa, 0x3, 0x2) recvfrom(r0, 0x0, 0x0, 0x101, 0x0, 0x0) 2.297940715s ago: executing program 1 (id=197): r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000002040), 0x2, 0x0) mount$fuse(0x0, &(0x7f0000002080)='./file0\x00', &(0x7f0000000040), 0x1000000, &(0x7f0000000080)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x8000}, 0x2c, {}, 0x2c, {}, 0x2c, {[{@default_permissions}]}}) 1.425669491s ago: executing program 0 (id=198): mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='sys_mnt\x00', 0x1ff) mount(0x0, &(0x7f0000000100)='sys_mnt\x00', 0x0, 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000340)='sys_mnt/block/zram0/comp_algorithm\x00', 0x2001, 0x22) write(r0, &(0x7f0000000380)='z', 0x1) 0s ago: executing program 1 (id=199): pipe2$9p(&(0x7f00000001c0), 0x80000) madvise(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x19) madvise(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x14) kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:32410' (ED25519) to the list of known hosts. syzkaller login: [ 457.234547][ T3219] cgroup: Unknown subsys name 'net' [ 458.019344][ T3219] cgroup: Unknown subsys name 'cpuset' [ 458.165374][ T3219] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 559.648239][ T3219] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 710.788723][ T3225] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 711.226040][ T3225] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 717.612380][ T3227] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 717.997343][ T3227] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 738.166985][ T3225] hsr_slave_0: entered promiscuous mode [ 738.251794][ T3225] hsr_slave_1: entered promiscuous mode [ 746.333929][ T3227] hsr_slave_0: entered promiscuous mode [ 746.388377][ T3227] hsr_slave_1: entered promiscuous mode [ 746.440167][ T3227] debugfs: 'hsr0' already exists in 'hsr' [ 746.442496][ T3227] Cannot create hsr debugfs directory [ 757.572655][ T3225] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 757.912995][ T3225] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 759.178819][ T3225] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 759.434167][ T3225] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 759.584184][ T3225] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 759.854755][ T3225] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 760.113986][ T3225] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 760.447432][ T3225] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 766.460293][ T3227] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 766.842663][ T3227] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 767.086199][ T3227] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 767.375277][ T3227] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 767.458720][ T3227] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 767.728140][ T3227] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 768.051608][ T3227] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 769.356419][ T3227] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 794.724946][ T3225] 8021q: adding VLAN 0 to HW filter on device bond0 [ 806.738269][ T3227] 8021q: adding VLAN 0 to HW filter on device bond0 [ 899.376274][ T3225] veth0_vlan: entered promiscuous mode [ 901.015029][ T3225] veth1_vlan: entered promiscuous mode [ 906.164363][ T3225] veth0_macvtap: entered promiscuous mode [ 907.218820][ T3225] veth1_macvtap: entered promiscuous mode [ 912.661252][ T3227] veth0_vlan: entered promiscuous mode [ 913.957587][ T3787] netdevsim netdevsim1 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 914.254291][ T3317] netdevsim netdevsim1 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 914.387522][ T3787] netdevsim netdevsim1 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 914.657357][ T3243] netdevsim netdevsim1 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 915.267151][ T3227] veth1_vlan: entered promiscuous mode [ 922.972783][ T3227] veth0_macvtap: entered promiscuous mode [ 924.218699][ T3227] veth1_macvtap: entered promiscuous mode [ 925.143286][ T3225] soft_limit_in_bytes is deprecated and will be removed. Writing any value to this file has no effect. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 928.684919][ T806] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 928.778650][ T3317] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 929.914903][ T806] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 930.066004][ T3787] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 1053.824902][ T3882] netlink: 32 bytes leftover after parsing attributes in process `syz.0.14'. [ 1068.262197][ T3887] netlink: 32 bytes leftover after parsing attributes in process `syz.1.15'. [ 1223.140722][ T3939] ./mnt: Can't lookup blockdev [ 1246.545773][ T3949] netlink: 'syz.0.37': attribute type 3 has an invalid length. [ 1246.546793][ T3949] IPv6: NLM_F_CREATE should be specified when creating new route [ 1256.600864][ T3957] netlink: 'syz.0.40': attribute type 12 has an invalid length. [ 1256.601629][ T3957] netlink: 8 bytes leftover after parsing attributes in process `syz.0.40'. [ 1289.112397][ T3991] FAULT_INJECTION: forcing a failure. [ 1289.112397][ T3991] name failslab, interval 1, probability 0, space 0, times 1 [ 1289.122936][ T3991] CPU: 0 UID: 0 PID: 3991 Comm: syz.1.57 Not tainted syzkaller #0 PREEMPT [ 1289.123626][ T3991] Hardware name: riscv-virtio,qemu (DT) [ 1289.124009][ T3991] Call Trace: [ 1289.124337][ T3991] [] dump_backtrace+0x2e/0x3c [ 1289.125831][ T3991] [] show_stack+0x30/0x3c [ 1289.126164][ T3991] [] dump_stack_lvl+0x114/0x1aa [ 1289.126492][ T3991] [] dump_stack+0x1c/0x24 [ 1289.126797][ T3991] [] should_fail_ex+0x5ac/0x5b6 [ 1289.127190][ T3991] [] should_failslab+0xb2/0xfa [ 1289.127583][ T3991] [] __kmalloc_noprof+0xd2/0x8fc [ 1289.127944][ T3991] [] tomoyo_realpath_from_path+0xac/0x5ea [ 1289.128407][ T3991] [] tomoyo_check_open_permission+0x2e2/0x3b8 [ 1289.128875][ T3991] [] tomoyo_file_open+0xa0/0xc4 [ 1289.129336][ T3991] [] security_file_open+0xd8/0x24c [ 1289.129759][ T3991] [] do_dentry_open+0x31e/0x128e [ 1289.130180][ T3991] [] vfs_open+0xba/0x3dc [ 1289.130603][ T3991] [] path_openat+0x18a2/0x2248 [ 1289.131065][ T3991] [] do_file_open+0x1ae/0x398 [ 1289.131475][ T3991] [] do_sys_openat2+0x102/0x1ca [ 1289.131923][ T3991] [] __riscv_sys_openat+0x122/0x1f2 [ 1289.132409][ T3991] [] syscall_handler+0x92/0x114 [ 1289.132858][ T3991] [] do_trap_ecall_u+0x4ca/0x658 [ 1289.133260][ T3991] [] handle_exception+0x168/0x174 [ 1289.257844][ T3991] ERROR: Out of memory at tomoyo_realpath_from_path. [ 1318.147618][ T4015] netlink: 'syz.1.69': attribute type 1 has an invalid length. [ 1319.298369][ T4016] netlink: 28 bytes leftover after parsing attributes in process `syz.1.69'. [ 1323.963739][ T4016] bond1: entered promiscuous mode [ 1323.966061][ T4016] bond1: entered allmulticast mode [ 1323.978387][ T4016] 8021q: adding VLAN 0 to HW filter on device bond1 [ 1349.104707][ T4071] veth1_macvtap: left promiscuous mode [ 1387.422939][ T31] audit: type=1326 audit(1386.640:2): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined pid=4090 comm="syz.0.86" exe="/syz-executor" sig=9 arch=c00000f3 syscall=98 compat=0 ip=0x7fffaab3427a code=0x0 [ 1444.872968][ T4125] netlink: 4 bytes leftover after parsing attributes in process `syz.1.98'. [ 1476.324261][ T4138] netlink: 'syz.0.102': attribute type 2 has an invalid length. [ 1477.404186][ T4139] netlink: 12 bytes leftover after parsing attributes in process `syz.0.102'. [ 1503.071525][ T4161] IPv6: NLM_F_CREATE should be specified when creating new route [ 1511.883355][ T4180] netlink: 'syz.1.109': attribute type 2 has an invalid length. [ 1511.893369][ T4180] netlink: 12 bytes leftover after parsing attributes in process `syz.1.109'. [ 1512.382334][ T4180] netlink: 'syz.1.109': attribute type 2 has an invalid length. [ 1512.937309][ T4181] netlink: 12 bytes leftover after parsing attributes in process `syz.1.109'. [ 1564.235624][ T4212] netlink: 4 bytes leftover after parsing attributes in process `syz.1.117'. [ 1566.826410][ T4212] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 1567.094570][ T4212] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 1568.161134][ T4212] bond0 (unregistering): Released all slaves [ 1568.477214][ T4214] netlink: 'syz.0.118': attribute type 2 has an invalid length. [ 1568.482578][ T4214] netlink: 12 bytes leftover after parsing attributes in process `syz.0.118'. [ 1569.608126][ T4214] netlink: 12 bytes leftover after parsing attributes in process `syz.0.118'. [ 1608.437768][ T4238] Zero length message leads to an empty skb [ 1697.158589][ T4310] ======================================================= [ 1697.158589][ T4310] WARNING: The mand mount option has been deprecated and [ 1697.158589][ T4310] and is ignored by this kernel. Remove the mand [ 1697.158589][ T4310] option from the mount to silence this warning. [ 1697.158589][ T4310] ======================================================= [ 1764.437987][ T4398] FAULT_INJECTION: forcing a failure. [ 1764.437987][ T4398] name failslab, interval 1, probability 0, space 0, times 0 [ 1764.438590][ T4398] CPU: 1 UID: 0 PID: 4398 Comm: syz.1.190 Not tainted syzkaller #0 PREEMPT [ 1764.438975][ T4398] Hardware name: riscv-virtio,qemu (DT) [ 1764.439125][ T4398] Call Trace: [ 1764.439264][ T4398] [] dump_backtrace+0x2e/0x3c [ 1764.439830][ T4398] [] show_stack+0x30/0x3c [ 1764.440204][ T4398] [] dump_stack_lvl+0x114/0x1aa [ 1764.440543][ T4398] [] dump_stack+0x1c/0x24 [ 1764.440931][ T4398] [] should_fail_ex+0x5ac/0x5b6 [ 1764.441353][ T4398] [] should_failslab+0xb2/0xfa [ 1764.441741][ T4398] [] __kmalloc_noprof+0xd2/0x8fc [ 1764.442101][ T4398] [] tomoyo_encode2+0x10e/0x368 [ 1764.442594][ T4398] [] tomoyo_realpath_from_path+0x170/0x5ea [ 1764.443047][ T4398] [] tomoyo_check_open_permission+0x2e2/0x3b8 [ 1764.443481][ T4398] [] tomoyo_file_open+0xa0/0xc4 [ 1764.443942][ T4398] [] security_file_open+0xd8/0x24c [ 1764.444381][ T4398] [] do_dentry_open+0x31e/0x128e [ 1764.444787][ T4398] [] vfs_open+0xba/0x3dc [ 1764.445275][ T4398] [] path_openat+0x18a2/0x2248 [ 1764.445670][ T4398] [] do_file_open+0x1ae/0x398 [ 1764.446102][ T4398] [] do_sys_openat2+0x102/0x1ca [ 1764.446556][ T4398] [] __riscv_sys_openat+0x122/0x1f2 [ 1764.447002][ T4398] [] syscall_handler+0x92/0x114 [ 1764.447461][ T4398] [] do_trap_ecall_u+0x4ca/0x658 [ 1764.447906][ T4398] [] handle_exception+0x168/0x174 [ 1764.485804][ T4398] ERROR: Out of memory at tomoyo_realpath_from_path. [ 1777.924857][ C1] ------------[ cut here ]------------ [ 1777.925167][ C1] kernel BUG at [] mm/page_table_check.c:118! [ 1777.926076][ C1] Kernel BUG [#1] [ 1777.930282][ C1] Modules linked in: [ 1777.931981][ C1] CPU: 1 UID: 0 PID: 4420 Comm: syz.1.199 Not tainted syzkaller #0 PREEMPT [ 1777.933997][ C1] Hardware name: riscv-virtio,qemu (DT) [ 1777.935185][ C1] epc : page_table_check_set+0x9ca/0xc72 [ 1777.936709][ C1] ra : page_table_check_set+0x9ca/0xc72 [ 1777.938148][ C1] epc : ffffffff80cbd16e ra : ffffffff80cbd16e sp : ffff8f8004186820 [ 1777.939769][ C1] gp : ffffffff8a6d9c00 tp : ffffaf801c600000 t0 : 0000000000000000 [ 1777.941397][ C1] t1 : fffff5ef02a20809 t2 : ffffffff9191b3a8 s0 : ffff8f80041868a0 [ 1777.942969][ C1] s1 : 0000000000000001 a0 : 0000000000000001 a1 : 0000000000000000 [ 1777.944520][ C1] a2 : 0000000000080000 a3 : ffffffff80cbd16e a4 : ffff8f8004cff0f8 [ 1777.946256][ C1] a5 : 00000000000950f8 a6 : 0000000000000003 a7 : ffffaf801510404b [ 1777.947892][ C1] s2 : 00000000000db400 s3 : 0000000000000000 s4 : ffffaf8015104000 [ 1777.949510][ C1] s5 : 0000000000000001 s6 : 0000000000000001 s7 : dfffffff00000000 [ 1777.951090][ C1] s8 : ffffffff88e6d260 s9 : 0000000000007fff s10: 0000000000000000 [ 1777.952613][ C1] s11: ffffffff8a7f9d60 t3 : 00000000000000c8 t4 : fffff5ef02a20809 [ 1777.954182][ C1] t5 : fffff5ef02a2080a t6 : 0000000000000002 ssp : 0000000000000000 [ 1777.955750][ C1] status: 0000000200000120 badaddr: ffffffff80cbd16e cause: 0000000000000003 [ 1777.957497][ C1] [] page_table_check_set+0x9ca/0xc72 [ 1777.959163][ C1] [] __page_table_check_ptes_set+0x23c/0x4a4 [ 1777.960882][ C1] [] remove_migration_pte+0xef6/0x22e4 [ 1777.962483][ C1] [] rmap_walk_anon+0x3b2/0x7aa [ 1777.964045][ C1] [] rmap_walk_locked+0xa6/0xca [ 1777.965475][ C1] [] remove_migration_ptes+0x18a/0x1bc [ 1777.967051][ C1] [] __folio_split+0x1502/0x1e70 [ 1777.968488][ C1] [] split_folio_to_list+0x4c/0x5e [ 1777.970013][ C1] [] madvise_cold_or_pageout_pte_range+0x186a/0x23a8 [ 1777.971855][ C1] [] walk_pgd_range+0xcca/0x1df8 [ 1777.973438][ C1] [] __walk_page_range+0x138/0x7a8 [ 1777.975669][ C1] [] walk_page_range_vma_unsafe+0x1ec/0x82c SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) [ 1777.978894][ C1] [] walk_page_range_vma+0x5a/0x84 [ 1777.981239][ C1] [] madvise_cold+0x1a4/0x5e0 [ 1777.982725][ C1] [] madvise_vma_behavior+0x732/0x1e92 [ 1777.984277][ C1] [] madvise_walk_vmas+0x244/0xa04 [ 1777.985790][ C1] [] madvise_do_behavior+0x1ea/0x5be [ 1777.987311][ C1] [] do_madvise+0x23a/0x294 [ 1777.988654][ C1] [] __riscv_sys_madvise+0x88/0xdc [ 1777.990166][ C1] [] syscall_handler+0x92/0x114 [ 1777.991612][ C1] [] do_trap_ecall_u+0x4ca/0x658 [ 1777.993143][ C1] [] handle_exception+0x168/0x174 [ 1777.995169][ C1] Code: 3097 ff88 80e7 a900 82e3 e404 3097 ff88 80e7 f8e0 (9002) 3097 [ 1777.997692][ C1] ---[ end trace 0000000000000000 ]--- [ 1777.999769][ C1] Kernel panic - not syncing: Fatal exception in interrupt [ 1778.001652][ C1] SMP: stopping secondary CPUs [ 1778.003948][ C1] Rebooting in 86400 seconds.. VM DIAGNOSIS: 09:12:54 Registers: info registers vcpu 0 CPU#0 V = 0 pc ffffffff8053fbce mhartid 0000000000000000 mstatus 0000000a000000a2 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000000 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000000 medeleg 0000000000f4b509 hedeleg 0000000000000000 mtvec 00000000800004f8 stvec ffffffff8663b0b0 vstvec 0000000000000000 mepc ffffffff80095c36 sepc ffffffff80b6044e vsepc 0000000000000000 mcause 0000000000000009 scause 8000000000000005 vscause 0000000000000000 mtval 0000000000000000 stval 0000000000000000 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080049000 sscratch 0000000000000000 satp 9012b0000009fef3 x0/zero 0000000000000000 x1/ra ffffffff8007ec16 x2/sp ffff8f8000006e80 x3/gp ffffffff8a6d9c00 x4/tp ffffaf8014380000 x5/t0 ffff8f8000007260 x6/t1 ffffffff8007e9b2 x7/t2 ffffaf801fdb7000 x8/s0 ffff8f8000007060 x9/s1 0000000000000800 x10/a0 ffffaf8018e29140 x11/a1 ffffaf8018e29b40 x12/a2 0000080000000000 x13/a3 ffffffff8007eaa6 x14/a4 0000000000000000 x15/a5 ffffaf8014380000 x16/a6 0000080000000000 x17/a7 0000000041b58ab3 x18/s2 ffff8f8000006fa0 x19/s3 ffffaf8014380000 x20/s4 ffff8f8000006f20 x21/s5 0000000000000000 x22/s6 ffffffff80404358 x23/s7 ffff8f8000006fe0 x24/s8 ffffffff804045d4 x25/s9 1ffff1f000000dd8 x26/s10 ffff8f8000007060 x27/s11 0000000000000001 x28/t3 ffffffff8828dcd0 x29/t4 fffff5ef02556598 x30/t5 fffff5ef02556599 x31/t6 ffffaf805cbce388 fcsr 0000000000000000 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000 info registers vcpu 1 CPU#1 V = 0 pc ffffffff865e8ffe mhartid 0000000000000001 mstatus 0000000a000001a0 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000020 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000000 medeleg 0000000000f4b509 hedeleg 0000000000000000 mtvec 00000000800004f8 stvec ffffffff8663b0b0 vstvec 0000000000000000 mepc ffffffff802a4b5e sepc ffffffff80cbd16e vsepc 0000000000000000 mcause 8000000000000003 scause 0000000000000003 vscause 0000000000000000 mtval 0000000000000000 stval ffffffff80cbd16e htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080047000 sscratch 0000000000000000 satp 9029a000000b1a8d x0/zero 0000000000000000 x1/ra ffffffff865e8fec x2/sp ffff8f8004185e20 x3/gp ffffffff8a6d9c00 x4/tp ffffaf801c600000 x5/t0 ffffffff88b15f60 x6/t1 0000000041b58ab3 x7/t2 6c2073656c75646f x8/s0 ffff8f8004185f40 x9/s1 ffffffff87d8268c x10/a0 0000000000000001 x11/a1 0000000000000000 x12/a2 0000000000000000 x13/a3 ffffffff865e8fec x14/a4 1ffff1f000830bf8 x15/a5 0000000000000000 x16/a6 000000001f000100 x17/a7 ffffffff884982f8 x18/s2 ffffffff87d77641 x19/s3 0000000000000004 x20/s4 ffff8f8004185fc0 x21/s5 ffff8f8004185ec0 x22/s6 0000000000000000 x23/s7 0000000000000073 x24/s8 0000000000000001 x25/s9 1ffff1f000830bcc x26/s10 ffffffff918bd68b x27/s11 0000000000000000 x28/t3 ffffffff865f682e x29/t4 ffffffff884989c0 x30/t5 fffff1ef00830bd5 x31/t6 ffff8f8004186228 fcsr 0000000000000000 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000