Warning: Permanently added '[localhost]:11954' (ED25519) to the list of known hosts. executing program [ 82.117593][ T5309] loop0: detected capacity change from 0 to 32768 [ 82.133628][ T5309] (syz-executor180,5309,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 82.150321][ T5309] (syz-executor180,5309,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 82.191379][ T5309] JBD2: Ignoring recovery information on journal [ 82.221594][ T5309] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 82.234088][ T1038] ocfs2: Finishing quota recovery on device (7,0) for slot 0 [ 82.257265][ T5308] [ 82.258523][ T5308] ====================================================== [ 82.262517][ T5308] WARNING: possible circular locking dependency detected [ 82.265413][ T5308] 6.14.0-rc2-syzkaller-00056-gab68d7eb7b1a #0 Not tainted [ 82.269166][ T5308] ------------------------------------------------------ [ 82.272140][ T5308] syz-executor180/5308 is trying to acquire lock: [ 82.275210][ T5308] ffff888042f9d148 ((wq_completion)ocfs2_wq){+.+.}-{0:0}, at: touch_wq_lockdep_map+0xb1/0x170 [ 82.279109][ T5308] [ 82.279109][ T5308] but task is already holding lock: [ 82.281802][ T5308] ffff888040d140e0 (&type->s_umount_key#42){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 [ 82.285450][ T5308] [ 82.285450][ T5308] which lock already depends on the new lock. [ 82.285450][ T5308] [ 82.289696][ T5308] [ 82.289696][ T5308] the existing dependency chain (in reverse order) is: [ 82.293307][ T5308] [ 82.293307][ T5308] -> #2 (&type->s_umount_key#42){++++}-{4:4}: [ 82.296543][ T5308] lock_acquire+0x1ed/0x550 [ 82.298454][ T5308] down_read+0xb1/0xa40 [ 82.300470][ T5308] ocfs2_finish_quota_recovery+0x15c/0x22a0 [ 82.303367][ T5308] ocfs2_complete_recovery+0x17c1/0x25c0 [ 82.306192][ T5308] process_scheduled_works+0xa66/0x1840 [ 82.309007][ T5308] worker_thread+0x870/0xd30 [ 82.311007][ T5308] kthread+0x7a9/0x920 [ 82.312991][ T5308] ret_from_fork+0x4b/0x80 [ 82.315057][ T5308] ret_from_fork_asm+0x1a/0x30 [ 82.317130][ T5308] [ 82.317130][ T5308] -> #1 ((work_completion)(&journal->j_recovery_work)){+.+.}-{0:0}: [ 82.321074][ T5308] lock_acquire+0x1ed/0x550 [ 82.323414][ T5308] process_scheduled_works+0x994/0x1840 [ 82.326018][ T5308] worker_thread+0x870/0xd30 [ 82.328167][ T5308] kthread+0x7a9/0x920 [ 82.330005][ T5308] ret_from_fork+0x4b/0x80 [ 82.331885][ T5308] ret_from_fork_asm+0x1a/0x30 [ 82.334046][ T5308] [ 82.334046][ T5308] -> #0 ((wq_completion)ocfs2_wq){+.+.}-{0:0}: [ 82.337794][ T5308] validate_chain+0x18ef/0x5920 [ 82.340465][ T5308] __lock_acquire+0x1397/0x2100 [ 82.343050][ T5308] lock_acquire+0x1ed/0x550 [ 82.344952][ T5308] touch_wq_lockdep_map+0xc7/0x170 [ 82.347030][ T5308] __flush_workqueue+0x14a/0x1280 [ 82.349097][ T5308] ocfs2_shutdown_local_alloc+0x109/0xa90 [ 82.351826][ T5308] ocfs2_dismount_volume+0x202/0x910 [ 82.354640][ T5308] generic_shutdown_super+0x139/0x2d0 [ 82.357573][ T5308] kill_block_super+0x44/0x90 [ 82.359797][ T5308] deactivate_locked_super+0xc4/0x130 [ 82.362124][ T5308] cleanup_mnt+0x41f/0x4b0 [ 82.364047][ T5308] task_work_run+0x24f/0x310 [ 82.366067][ T5308] syscall_exit_to_user_mode+0x13f/0x340 [ 82.368557][ T5308] do_syscall_64+0x100/0x230 [ 82.370845][ T5308] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 82.373726][ T5308] [ 82.373726][ T5308] other info that might help us debug this: [ 82.373726][ T5308] [ 82.377608][ T5308] Chain exists of: [ 82.377608][ T5308] (wq_completion)ocfs2_wq --> (work_completion)(&journal->j_recovery_work) --> &type->s_umount_key#42 [ 82.377608][ T5308] [ 82.384841][ T5308] Possible unsafe locking scenario: [ 82.384841][ T5308] [ 82.387693][ T5308] CPU0 CPU1 [ 82.389945][ T5308] ---- ---- [ 82.391726][ T5308] lock(&type->s_umount_key#42); [ 82.393551][ T5308] lock((work_completion)(&journal->j_recovery_work)); [ 82.396751][ T5308] lock(&type->s_umount_key#42); [ 82.399683][ T5308] lock((wq_completion)ocfs2_wq); [ 82.401780][ T5308] [ 82.401780][ T5308] *** DEADLOCK *** [ 82.401780][ T5308] [ 82.405730][ T5308] 1 lock held by syz-executor180/5308: [ 82.408170][ T5308] #0: ffff888040d140e0 (&type->s_umount_key#42){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 [ 82.412160][ T5308] [ 82.412160][ T5308] stack backtrace: [ 82.414418][ T5308] CPU: 0 UID: 0 PID: 5308 Comm: syz-executor180 Not tainted 6.14.0-rc2-syzkaller-00056-gab68d7eb7b1a #0 [ 82.414434][ T5308] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 82.414441][ T5308] Call Trace: [ 82.414449][ T5308] [ 82.414456][ T5308] dump_stack_lvl+0x241/0x360 [ 82.414471][ T5308] ? __pfx_dump_stack_lvl+0x10/0x10 [ 82.414481][ T5308] ? __pfx__printk+0x10/0x10 [ 82.414523][ T5308] print_circular_bug+0x13a/0x1b0 [ 82.414535][ T5308] check_noncircular+0x36a/0x4a0 [ 82.414545][ T5308] ? __lock_acquire+0x1397/0x2100 [ 82.414559][ T5308] ? __pfx_check_noncircular+0x10/0x10 [ 82.414566][ T5308] ? lockdep_lock+0x123/0x2b0 [ 82.414573][ T5308] ? mark_lock+0x9a/0x360 [ 82.414581][ T5308] validate_chain+0x18ef/0x5920 [ 82.414590][ T5308] ? __pfx_validate_chain+0x10/0x10 [ 82.414603][ T5308] ? debug_object_assert_init+0x2dd/0x4b0 [ 82.414614][ T5308] ? do_raw_spin_lock+0x14f/0x370 [ 82.414626][ T5308] ? __pfx_lock_release+0x10/0x10 [ 82.414639][ T5308] ? mark_lock+0x9a/0x360 [ 82.414652][ T5308] __lock_acquire+0x1397/0x2100 [ 82.414666][ T5308] ? kfree+0x196/0x430 [ 82.414676][ T5308] ? ocfs2_dismount_volume+0x1bd/0x910 [ 82.414696][ T5308] lock_acquire+0x1ed/0x550 [ 82.414708][ T5308] ? touch_wq_lockdep_map+0xb1/0x170 [ 82.414723][ T5308] ? __pfx_lock_acquire+0x10/0x10 [ 82.414736][ T5308] ? __asan_memset+0x23/0x50 [ 82.414747][ T5308] ? lockdep_init_map_type+0xa1/0x910 [ 82.414759][ T5308] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 82.414771][ T5308] ? __lock_acquire+0x1397/0x2100 [ 82.414787][ T5308] ? touch_wq_lockdep_map+0xb1/0x170 [ 82.414799][ T5308] touch_wq_lockdep_map+0xc7/0x170 [ 82.414811][ T5308] ? touch_wq_lockdep_map+0xb1/0x170 [ 82.414825][ T5308] __flush_workqueue+0x14a/0x1280 [ 82.414838][ T5308] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 82.414853][ T5308] ? __pfx___flush_workqueue+0x10/0x10 [ 82.414868][ T5308] ? mark_lock+0x9a/0x360 [ 82.414881][ T5308] ocfs2_shutdown_local_alloc+0x109/0xa90 [ 82.414897][ T5308] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 82.414909][ T5308] ? __pfx_ocfs2_shutdown_local_alloc+0x10/0x10 [ 82.414923][ T5308] ? lockdep_hardirqs_on+0x99/0x150 [ 82.414937][ T5308] ? enable_work+0x2e3/0x360 [ 82.414949][ T5308] ? __pfx_enable_work+0x10/0x10 [ 82.414962][ T5308] ? _atomic_dec_and_lock+0x9a/0x130 [ 82.414976][ T5308] ? iput+0x3be/0xa50 [ 82.414989][ T5308] ocfs2_dismount_volume+0x202/0x910 [ 82.415003][ T5308] ? __pfx_ocfs2_dismount_volume+0x10/0x10 [ 82.415017][ T5308] ? __pfx_evict_inodes+0x10/0x10 [ 82.415027][ T5308] ? __pfx_ocfs2_put_super+0x10/0x10 [ 82.415041][ T5308] generic_shutdown_super+0x139/0x2d0 [ 82.415055][ T5308] kill_block_super+0x44/0x90 [ 82.415068][ T5308] deactivate_locked_super+0xc4/0x130 [ 82.415081][ T5308] cleanup_mnt+0x41f/0x4b0 [ 82.415093][ T5308] ? lockdep_hardirqs_on+0x99/0x150 [ 82.415106][ T5308] task_work_run+0x24f/0x310 [ 82.415121][ T5308] ? __pfx_task_work_run+0x10/0x10 [ 82.415134][ T5308] ? __x64_sys_umount+0x123/0x170 [ 82.415149][ T5308] ? syscall_exit_to_user_mode+0xa3/0x340 [ 82.415162][ T5308] syscall_exit_to_user_mode+0x13f/0x340 [ 82.415176][ T5308] do_syscall_64+0x100/0x230 [ 82.415189][ T5308] ? clear_bhb_loop+0x35/0x90 [ 82.415205][ T5308] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 82.415217][ T5308] RIP: 0033:0x7fd363d4d487 [ 82.415228][ T5308] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 82.415236][ T5308] RSP: 002b:00007ffe142e85b8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 82.415249][ T5308] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fd363d4d487 [ 82.415256][ T5308] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe142e8670 [ 82.415262][ T5308] RBP: 00007ffe142e8670 R08: 0000000000000000 R09: 0000000000000000 [ 82.415268][ T5308] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffe142e96e0 [ 82.415274][ T5308] R13: 0000555567d366c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 82.415283][ T5308] [ 82.597886][ T5308] ocfs2: Unmounting device (7,0) on (node local) executing program [ 82.889101][ T5313] loop0: detected capacity change from 0 to 32768 [ 82.901975][ T5313] (syz-executor180,5313,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 82.914623][ T5313] (syz-executor180,5313,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 82.936421][ T5313] JBD2: Ignoring recovery information on journal [ 82.955507][ T5313] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 82.960705][ T11] ocfs2: Finishing quota recovery on device (7,0) for slot 0 [ 82.977980][ T5308] ocfs2: Unmounting device (7,0) on (node local) executing program [ 83.146105][ T5316] loop0: detected capacity change from 0 to 32768 [ 83.169800][ T5316] (syz-executor180,5316,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 83.182905][ T5316] (syz-executor180,5316,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 83.192305][ T5316] JBD2: Ignoring recovery information on journal [ 83.207683][ T5316] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 83.214041][ T1038] ocfs2: Finishing quota recovery on device (7,0) for slot 0 [ 83.227227][ T5308] ocfs2: Unmounting device (7,0) on (node local) executing program [ 83.381781][ T5319] loop0: detected capacity change from 0 to 32768 [ 83.409099][ T5319] (syz-executor180,5319,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 83.415097][ T5319] (syz-executor180,5319,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 83.435902][ T5319] JBD2: Ignoring recovery information on journal [ 83.452964][ T5319] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 83.461322][ T11] ocfs2: Finishing quota recovery on device (7,0) for slot 0 [ 83.472524][ T5308] ocfs2: Unmounting device (7,0) on (node local) executing program [ 83.636017][ T5322] loop0: detected capacity change from 0 to 32768 [ 83.644646][ T5322] (syz-executor180,5322,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 83.655784][ T5322] (syz-executor180,5322,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 83.679828][ T5322] JBD2: Ignoring recovery information on journal [ 83.697713][ T5322] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 83.702778][ T1038] ocfs2: Finishing quota recovery on device (7,0) for slot 0 [ 83.711085][ T5308] ocfs2: Unmounting device (7,0) on (node local) executing program [ 83.866863][ T5325] loop0: detected capacity change from 0 to 32768 [ 83.884651][ T5325] (syz-executor180,5325,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 83.895920][ T5325] (syz-executor180,5325,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 83.905500][ T5325] JBD2: Ignoring recovery information on journal [ 83.922393][ T5325] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 83.926894][ T1038] ocfs2: Finishing quota recovery on device (7,0) for slot 0 [ 83.941875][ T5308] ocfs2: Unmounting device (7,0) on (node local) executing program [ 84.101701][ T5328] loop0: detected capacity change from 0 to 32768 [ 84.110308][ T5328] (syz-executor180,5328,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 84.123408][ T5328] (syz-executor180,5328,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0xb3775c19, computed 0x2dd1c265. Applying ECC. [ 84.147402][ T5328] JBD2: Ignoring recovery information on journal [ 84.162975][ T5328] ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. [ 84.169000][ T1038] ocfs2: Finishing quota recovery on device (7,0) for slot 0 [ 86.823534][ T56] cfg80211: failed to load regulatory.db VM DIAGNOSIS: 06:12:41 Registers: info registers vcpu 0 CPU#0 RAX=0000000000000032 RBX=ffffffff9a748080 RCX=0000000000000000 RDX=00000000000003f8 RSI=0000000000000000 RDI=0000000000000020 RBP=0000000000000000 RSP=ffffc9000d106a70 R8 =ffffffff8576cadb R9 =1ffff11003d74046 R10=dffffc0000000000 R11=ffffffff8576ca90 R12=dffffc0000000000 R13=0000000000000032 R14=0000000000000032 R15=00000000000003f8 RIP=ffffffff8576cb0e 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 0000555567d35380 ffffffff 00c00000 GS =0000 ffff88801fc00000 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=00007ffe142e7e08 CR3=0000000044230000 CR4=00352ef0 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=0000000000060001 Opmask01=0000000000200000 Opmask02=0000000000000004 Opmask03=0000000000000000 Opmask04=00000000ffffffff Opmask05=0000000000000000 Opmask06=0000000000000000 Opmask07=0000000000000000 ZMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000001 ZMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00007ffd350a6b10 0000003000000018 ZMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 6565656565656565 6565656565656565 ZMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM04=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ff00ff0000000000 0000000000000000 ZMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ffffffffffffffff ffffffffffff0000 ZMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ff00ff0000000000 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 0a0a0a0a0a0a0a0a 0a0a0a0a0a0a0a0a 0a0a0a0a0a0a0a0a 0a0a0a0a0a0a0a0a ZMM18=0000000000000000 0000000000000000 0000000000000000 0000000000000000 373733627830203a 6465726f7400002e 65646f6d20617461 6420646572656400 ZMM19=0000000000000000 0000000000000000 0000000000000000 0000000000000000 3737336272302030 6465726574000024 6564656720617461 6420646572656400 ZMM20=0000000000000000 0000000000000000 0000000000000000 0000000000000000 205b5d3620363133 3820323220202053 3e203a0a64686262 7320203154202020 ZMM21=0000000000000000 0000000000000000 0000000000000000 0000000000000000 2020572020313120 2020202020202020 3420320032322020 2020203136002020 ZMM22=0000000000000000 0000000000000000 0000000000000000 0000000000000000 68797f2a573b5e2a 2a2a2a51573e3f39 3e38322438382a2a 2a51343c36003a7e ZMM23=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM24=0000000000000000 0000000000000000 0000000000000000 0000000000000000 2a51573c3d3c3b39 322438382a2a2a51 343c36006e636268 797f2a786f7c6378 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