Warning: Permanently added '[localhost]:35006' (ED25519) to the list of known hosts. executing program syzkaller login: [ 94.642608][ T5099] loop0: detected capacity change from 0 to 32768 [ 94.672715][ T5099] ------------[ cut here ]------------ [ 94.675111][ T5099] UBSAN: shift-out-of-bounds in fs/bcachefs/sb-members.c:249:2 [ 94.677930][ T5099] shift exponent 69 is too large for 64-bit type 'unsigned long long' [ 94.696332][ T5099] CPU: 0 UID: 0 PID: 5099 Comm: syz-executor454 Not tainted 6.11.0-rc6-syzkaller #0 [ 94.699581][ T5099] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 94.703661][ T5099] Call Trace: [ 94.705010][ T5099] [ 94.706188][ T5099] dump_stack_lvl+0x241/0x360 [ 94.708409][ T5099] ? __pfx_dump_stack_lvl+0x10/0x10 [ 94.710808][ T5099] ? __pfx__printk+0x10/0x10 [ 94.712756][ T5099] ? bch2_prt_printf+0x559/0x6d0 [ 94.714726][ T5099] __ubsan_handle_shift_out_of_bounds+0x3c8/0x420 [ 94.717369][ T5099] ? bch2_sb_field_get_id+0xd3/0x110 [ 94.719508][ T5099] member_to_text+0x9a2/0x9b0 [ 94.721157][ T5099] ? kfree+0x149/0x360 [ 94.722973][ T5099] ? krealloc_noprof+0xcf/0x120 [ 94.725288][ T5099] ? bch2_printbuf_make_room+0x1f1/0x350 [ 94.727585][ T5099] ? __pfx_member_to_text+0x10/0x10 [ 94.729261][ T5099] ? bch2_sb_members_v2_to_text+0x202/0x3b0 [ 94.731107][ T5099] bch2_sb_members_v2_to_text+0x267/0x3b0 [ 94.732901][ T5099] ? __pfx_bch2_sb_members_v2_to_text+0x10/0x10 [ 94.734896][ T5099] ? bch2_prt_newline+0x48d/0x980 [ 94.736389][ T5099] ? bch2_printbuf_tabstop_push+0xc9/0x200 [ 94.738458][ T5099] ? bch2_sb_field_to_text+0x187/0x250 [ 94.740592][ T5099] bch2_sb_field_validate+0x201/0x2e0 [ 94.742750][ T5099] ? __pfx_bch2_sb_field_validate+0x10/0x10 [ 94.745058][ T5099] ? BCH_SB_BACKGROUND_COMPRESSION_TYPE+0x1b/0x80 [ 94.748004][ T5099] ? bch2_opt_validate+0x2ca/0x300 [ 94.750901][ T5099] bch2_sb_validate+0xb4b/0xef0 [ 94.752943][ T5099] ? blk_status_to_errno+0x22/0x80 [ 94.754929][ T5099] ? __pfx_bch2_sb_validate+0x10/0x10 [ 94.756856][ T5099] ? bch2_sb_compatible+0x416/0xa60 [ 94.758725][ T5099] ? read_one_super+0x65a/0xf40 [ 94.760443][ T5099] ? read_one_super+0xe23/0xf40 [ 94.762217][ T5099] ? bch2_sb_realloc+0x422/0x660 [ 94.764008][ T5099] ? kfree+0x4e/0x360 [ 94.765616][ T5099] ? __pfx_read_one_super+0x10/0x10 [ 94.767628][ T5099] ? __pfx_bch2_sb_realloc+0x10/0x10 [ 94.769797][ T5099] ? bdev_file_open_by_path+0x385/0x480 [ 94.771896][ T5099] ? __pfx_bdev_file_open_by_path+0x10/0x10 [ 94.774008][ T5099] ? trace_kmalloc+0x1f/0xd0 [ 94.775682][ T5099] ? __asan_memcpy+0x40/0x70 [ 94.777530][ T5099] __bch2_read_super+0xc1b/0x1370 [ 94.779638][ T5099] ? stack_depot_save_flags+0x6e4/0x830 [ 94.782198][ T5099] ? __pfx___bch2_read_super+0x10/0x10 [ 94.784868][ T5099] ? __bch2_darray_resize+0x174/0x200 [ 94.787431][ T5099] ? rcu_is_watching+0x15/0xb0 [ 94.789329][ T5099] ? __bch2_darray_resize+0x174/0x200 [ 94.791202][ T5099] bch2_fs_open+0x246/0xdf0 [ 94.792849][ T5099] ? __pfx_bch2_test_super+0x10/0x10 [ 94.794839][ T5099] ? kasan_save_track+0x51/0x80 [ 94.796418][ T5099] ? kasan_save_track+0x3f/0x80 [ 94.798224][ T5099] ? kasan_save_free_info+0x40/0x50 [ 94.800367][ T5099] ? poison_slab_object+0xe0/0x150 [ 94.802429][ T5099] ? __kasan_slab_free+0x37/0x60 [ 94.804569][ T5099] ? kfree+0x149/0x360 [ 94.806370][ T5099] ? sget+0x2b8/0x620 [ 94.808039][ T5099] ? bch2_fs_get_tree+0x67c/0x1700 [ 94.809749][ T5099] ? vfs_get_tree+0x90/0x2b0 [ 94.811525][ T5099] ? do_new_mount+0x2be/0xb40 [ 94.813043][ T5099] ? __se_sys_mount+0x2d6/0x3c0 [ 94.814628][ T5099] ? do_syscall_64+0xf3/0x230 [ 94.816227][ T5099] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.818514][ T5099] ? __pfx_bch2_fs_open+0x10/0x10 [ 94.821096][ T5099] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 94.824081][ T5099] ? __pfx_bch2_test_super+0x10/0x10 [ 94.826367][ T5099] ? sget+0x2b8/0x620 [ 94.827777][ T5099] ? __pfx_bch2_noset_super+0x10/0x10 [ 94.829643][ T5099] bch2_fs_get_tree+0x731/0x1700 [ 94.831385][ T5099] ? __pfx_bch2_parse_one_mount_opt+0x10/0x10 [ 94.833681][ T5099] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 94.835502][ T5099] ? generic_parse_monolithic+0x387/0x400 [ 94.837306][ T5099] ? apparmor_capable+0x13b/0x1b0 [ 94.839178][ T5099] ? bpf_lsm_capable+0x9/0x10 [ 94.840978][ T5099] vfs_get_tree+0x90/0x2b0 [ 94.842722][ T5099] do_new_mount+0x2be/0xb40 [ 94.844509][ T5099] ? __pfx_do_new_mount+0x10/0x10 [ 94.846583][ T5099] __se_sys_mount+0x2d6/0x3c0 [ 94.848495][ T5099] ? __pfx___se_sys_mount+0x10/0x10 [ 94.850461][ T5099] ? do_syscall_64+0x100/0x230 [ 94.852199][ T5099] ? __x64_sys_mount+0x20/0xc0 [ 94.853968][ T5099] do_syscall_64+0xf3/0x230 [ 94.855676][ T5099] ? clear_bhb_loop+0x35/0x90 [ 94.857327][ T5099] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.859703][ T5099] RIP: 0033:0x7fe3ee4d7faa [ 94.861385][ T5099] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 94.868605][ T5099] RSP: 002b:00007ffe262fa7b8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 94.871853][ T5099] RAX: ffffffffffffffda RBX: 00007ffe262fa7d0 RCX: 00007fe3ee4d7faa [ 94.875100][ T5099] RDX: 00000000200058c0 RSI: 0000000020000100 RDI: 00007ffe262fa7d0 [ 94.878537][ T5099] RBP: 0000000000000004 R08: 00007ffe262fa810 R09: 0000000000005903 [ 94.881233][ T5099] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000 [ 94.884538][ T5099] R13: 00007ffe262fa810 R14: 0000000000000003 R15: 0000000001000000 [ 94.888069][ T5099] [ 95.099890][ T5099] ---[ end trace ]--- [ 95.101561][ T5099] Kernel panic - not syncing: UBSAN: panic_on_warn set ... [ 95.104144][ T5099] CPU: 0 UID: 0 PID: 5099 Comm: syz-executor454 Not tainted 6.11.0-rc6-syzkaller #0 [ 95.107510][ T5099] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 95.111730][ T5099] Call Trace: [ 95.113058][ T5099] [ 95.114154][ T5099] dump_stack_lvl+0x241/0x360 [ 95.115979][ T5099] ? __pfx_dump_stack_lvl+0x10/0x10 [ 95.118144][ T5099] ? __pfx__printk+0x10/0x10 [ 95.120005][ T5099] ? vprintk_emit+0x667/0x7c0 [ 95.121614][ T5099] ? vscnprintf+0x5d/0x90 [ 95.123128][ T5099] panic+0x349/0x860 [ 95.124404][ T5099] ? check_panic_on_warn+0x21/0xb0 [ 95.126189][ T5099] ? __pfx_panic+0x10/0x10 [ 95.127769][ T5099] ? _printk+0xd5/0x120 [ 95.129105][ T5099] ? __pfx__printk+0x10/0x10 [ 95.130666][ T5099] check_panic_on_warn+0x86/0xb0 [ 95.132209][ T5099] __ubsan_handle_shift_out_of_bounds+0x3e7/0x420 [ 95.134421][ T5099] ? bch2_sb_field_get_id+0xd3/0x110 [ 95.136351][ T5099] member_to_text+0x9a2/0x9b0 [ 95.138094][ T5099] ? kfree+0x149/0x360 [ 95.139593][ T5099] ? krealloc_noprof+0xcf/0x120 [ 95.141579][ T5099] ? bch2_printbuf_make_room+0x1f1/0x350 [ 95.143700][ T5099] ? __pfx_member_to_text+0x10/0x10 [ 95.145511][ T5099] ? bch2_sb_members_v2_to_text+0x202/0x3b0 [ 95.147656][ T5099] bch2_sb_members_v2_to_text+0x267/0x3b0 [ 95.149781][ T5099] ? __pfx_bch2_sb_members_v2_to_text+0x10/0x10 [ 95.152045][ T5099] ? bch2_prt_newline+0x48d/0x980 [ 95.153983][ T5099] ? bch2_printbuf_tabstop_push+0xc9/0x200 [ 95.156019][ T5099] ? bch2_sb_field_to_text+0x187/0x250 [ 95.158009][ T5099] bch2_sb_field_validate+0x201/0x2e0 [ 95.160202][ T5099] ? __pfx_bch2_sb_field_validate+0x10/0x10 [ 95.162424][ T5099] ? BCH_SB_BACKGROUND_COMPRESSION_TYPE+0x1b/0x80 [ 95.164653][ T5099] ? bch2_opt_validate+0x2ca/0x300 [ 95.166548][ T5099] bch2_sb_validate+0xb4b/0xef0 [ 95.168402][ T5099] ? blk_status_to_errno+0x22/0x80 [ 95.170537][ T5099] ? __pfx_bch2_sb_validate+0x10/0x10 [ 95.172744][ T5099] ? bch2_sb_compatible+0x416/0xa60 [ 95.174842][ T5099] ? read_one_super+0x65a/0xf40 [ 95.176689][ T5099] ? read_one_super+0xe23/0xf40 [ 95.178544][ T5099] ? bch2_sb_realloc+0x422/0x660 [ 95.180423][ T5099] ? kfree+0x4e/0x360 [ 95.181856][ T5099] ? __pfx_read_one_super+0x10/0x10 [ 95.183580][ T5099] ? __pfx_bch2_sb_realloc+0x10/0x10 [ 95.185229][ T5099] ? bdev_file_open_by_path+0x385/0x480 [ 95.187438][ T5099] ? __pfx_bdev_file_open_by_path+0x10/0x10 [ 95.189934][ T5099] ? trace_kmalloc+0x1f/0xd0 [ 95.191895][ T5099] ? __asan_memcpy+0x40/0x70 [ 95.193748][ T5099] __bch2_read_super+0xc1b/0x1370 [ 95.195637][ T5099] ? stack_depot_save_flags+0x6e4/0x830 [ 95.197722][ T5099] ? __pfx___bch2_read_super+0x10/0x10 [ 95.199888][ T5099] ? __bch2_darray_resize+0x174/0x200 [ 95.201950][ T5099] ? rcu_is_watching+0x15/0xb0 [ 95.203869][ T5099] ? __bch2_darray_resize+0x174/0x200 [ 95.206377][ T5099] bch2_fs_open+0x246/0xdf0 [ 95.208290][ T5099] ? __pfx_bch2_test_super+0x10/0x10 [ 95.210765][ T5099] ? kasan_save_track+0x51/0x80 [ 95.212772][ T5099] ? kasan_save_track+0x3f/0x80 [ 95.214647][ T5099] ? kasan_save_free_info+0x40/0x50 [ 95.216673][ T5099] ? poison_slab_object+0xe0/0x150 [ 95.218700][ T5099] ? __kasan_slab_free+0x37/0x60 [ 95.220782][ T5099] ? kfree+0x149/0x360 [ 95.222583][ T5099] ? sget+0x2b8/0x620 [ 95.224361][ T5099] ? bch2_fs_get_tree+0x67c/0x1700 [ 95.226483][ T5099] ? vfs_get_tree+0x90/0x2b0 [ 95.228364][ T5099] ? do_new_mount+0x2be/0xb40 [ 95.230391][ T5099] ? __se_sys_mount+0x2d6/0x3c0 [ 95.232490][ T5099] ? do_syscall_64+0xf3/0x230 [ 95.234976][ T5099] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.238211][ T5099] ? __pfx_bch2_fs_open+0x10/0x10 [ 95.240529][ T5099] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 95.243425][ T5099] ? __pfx_bch2_test_super+0x10/0x10 [ 95.245727][ T5099] ? sget+0x2b8/0x620 [ 95.247601][ T5099] ? __pfx_bch2_noset_super+0x10/0x10 [ 95.250106][ T5099] bch2_fs_get_tree+0x731/0x1700 [ 95.252467][ T5099] ? __pfx_bch2_parse_one_mount_opt+0x10/0x10 [ 95.255076][ T5099] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 95.257547][ T5099] ? generic_parse_monolithic+0x387/0x400 [ 95.260343][ T5099] ? apparmor_capable+0x13b/0x1b0 [ 95.263035][ T5099] ? bpf_lsm_capable+0x9/0x10 [ 95.265191][ T5099] vfs_get_tree+0x90/0x2b0 [ 95.266912][ T5099] do_new_mount+0x2be/0xb40 [ 95.268604][ T5099] ? __pfx_do_new_mount+0x10/0x10 [ 95.270519][ T5099] __se_sys_mount+0x2d6/0x3c0 [ 95.272375][ T5099] ? __pfx___se_sys_mount+0x10/0x10 [ 95.274584][ T5099] ? do_syscall_64+0x100/0x230 [ 95.276777][ T5099] ? __x64_sys_mount+0x20/0xc0 [ 95.278826][ T5099] do_syscall_64+0xf3/0x230 [ 95.280523][ T5099] ? clear_bhb_loop+0x35/0x90 [ 95.282271][ T5099] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.284530][ T5099] RIP: 0033:0x7fe3ee4d7faa [ 95.286374][ T5099] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 95.294622][ T5099] RSP: 002b:00007ffe262fa7b8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 95.297539][ T5099] RAX: ffffffffffffffda RBX: 00007ffe262fa7d0 RCX: 00007fe3ee4d7faa [ 95.300378][ T5099] RDX: 00000000200058c0 RSI: 0000000020000100 RDI: 00007ffe262fa7d0 [ 95.303392][ T5099] RBP: 0000000000000004 R08: 00007ffe262fa810 R09: 0000000000005903 [ 95.306552][ T5099] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000 [ 95.310129][ T5099] R13: 00007ffe262fa810 R14: 0000000000000003 R15: 0000000001000000 [ 95.313402][ T5099] [ 95.314651][ T5099] Kernel Offset: disabled [ 95.316061][ T5099] Rebooting in 86400 seconds.. VM DIAGNOSIS: 20:53:12 Registers: info registers vcpu 0 CPU#0 RAX=000000000000006f RBX=ffffffff9a668f20 RCX=0000000000000000 RDX=00000000000003f8 RSI=0000000000000000 RDI=0000000000000020 RBP=0000000000000000 RSP=ffffc9000179e290 R8 =ffffffff85409c4b R9 =1ffff11003dbf046 R10=dffffc0000000000 R11=ffffffff85409c00 R12=dffffc0000000000 R13=000000000000006f R14=000000000000006f R15=00000000000003f8 RIP=ffffffff85409c7e RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 ffffffff 00c00000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 ffffffff 00c00000 FS =0000 000055556f4b1380 ffffffff 00c00000 GS =0000 ffff88801fe00000 ffffffff 00c00000 LDT=0000 0000000000000000 ffffffff 00c00000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007fe1a149c748 CR3=0000000012720000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000fffe0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 Opmask00=0000000000440401 Opmask01=0000000000000001 Opmask02=00000000fff7ffff Opmask03=0000000000000000 Opmask04=0000000000000000 Opmask05=0000000000000000 Opmask06=0000000000000000 Opmask07=0000000000000000 ZMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007ffe262fa950 0000003000000018 ZMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007fe3ee55b560 00007fe3ee54f5d8 ZMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007fe3ee540ba4 00007fe3ee554240 ZMM04=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM16=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM17=0000000000000000 0000000000000000 0000000000000000 0000000000000000 2525252525252525 2525252525252525 2525252525252525 2525252525252525 ZMM18=0000000000000000 0000000000000000 0000000000000000 0000000000000000 65723d73726f7272 6500747865003036 36396f7369007265 6c6c616b7a797300 ZMM19=0000000000000000 0000000000000000 0000000000000000 0000000000000000 40571856574a5757 4000515d40001513 131c4a564c005740 4949444e5f5c5600 ZMM20=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM21=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM22=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM23=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM24=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM25=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM26=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM27=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM28=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM29=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM30=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM31=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000