Warning: Permanently added '10.128.0.131' (ED25519) to the list of known hosts. [*] Starting reproducer for GPF in raid5_quiesce... [+] mknod /dev/md0 successful. [+] memfd_create mfd0 successful. [+] ftruncate mfd0 successful (size=16777216). [+] memfd_create mfd1 successful. [+] ftruncate mfd1 successful (size=16777216). [+] LOOP_SET_FD /dev/loop0 successful. [+] Closed /dev/loop0 (dev=7:0). [+] LOOP_SET_FD /dev/loop1 successful. [+] Closed /dev/loop1 (dev=7:1). [ 166.325796][ T5902] loop0: detected capacity change from 0 to 32768 [ 166.369934][ T5902] loop1: detected capacity change from 0 to 32768 [+] open /dev/md0 successful. [ 166.638686][ T5902] md: async del_gendisk mode will be removed in future, please upgrade to mdadm-4.5+ [ 166.680408][ T5902] md: md0 stopped. [+] ioctl SET_ARRAY_INFO successful. [+] ioctl ADD_NEW_DISK 0 successful. [+] ioctl ADD_NEW_DISK 1 successful. [+] ioctl RUN_ARRAY successful. [ 167.230010][ T5902] md0: detected capacity change from 0 to 65536 [*] Marking disk 0 faulty to trigger MD_BROKEN... [+] Wrote 'faulty' to sysfs disk state (res=-1, errno=Device or resource busy). [+] ioctl SET_DISK_FAULTY executed (res=-1, errno=Device or resource busy). [+] Closed /dev/md0 (openers count is now 0). [ 167.328611][ T5902] md/raid0md0: Disk failure on loop0 detected, failing array. [*] Triggering takeover to RAID5 via /sys/block/md0/md/level... [ 167.601854][ T5902] md/raid:md0: device loop1 operational as raid disk 1 [ 167.601895][ T5902] md/raid:md0: device loop0 operational as raid disk 0 [ 167.681576][ T5902] md/raid:md0: not enough operational devices (1/3 failed) [+] Write 'raid5' to /sys/block/md0/md/level successful. [ 168.123460][ T5902] md/raid:md0: failed to run raid set. [*] Writing 'readonly' to /sys/block/md0/md/array_state... [ 168.195612][ T5902] Oops: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN PTI [ 168.209922][ T5902] KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] [ 168.221099][ T5902] CPU: 0 UID: 0 PID: 5902 Comm: syz-executor169 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 168.233740][ T5902] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 [ 168.245438][ T5902] RIP: 0010:kasan_byte_accessible+0x12/0x30 [ 168.253247][ T5902] Code: 79 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 90 e7 2a 09 cc 66 66 66 66 66 66 2e [ 168.276044][ T5902] RSP: 0018:ffffc9000544f708 EFLAGS: 00010206 [ 168.282963][ T5902] RAX: dffffc0000000000 RBX: ffffffff8b5cf203 RCX: 8000000000000001 [ 168.291676][ T5902] RDX: 0000000000000000 RSI: ffffffff8b5cf203 RDI: 000000000000000c [ 168.300308][ T5902] RBP: ffffc9000544f870 R08: 0000000000000001 R09: 0000000000000000 [ 168.308792][ T5902] R10: dffffc0000000000 R11: ffffffff87ff0a50 R12: 0000000000000060 [ 168.317430][ T5902] R13: 0000000000000000 R14: 0000000000000060 R15: 0000000000000001 [ 168.325991][ T5902] FS: 000055556c882400(0000) GS:ffff8881249b9000(0000) knlGS:0000000000000000 [ 168.335638][ T5902] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 168.343217][ T5902] CR2: 000055d585e02cd0 CR3: 0000000044162000 CR4: 00000000003526f0 [ 168.351968][ T5902] Call Trace: [ 168.355560][ T5902] [ 168.358733][ T5902] __kasan_check_byte+0x12/0x40 [ 168.364107][ T5902] lock_acquire+0x7d/0x350 [ 168.368959][ T5902] ? check_path+0x21/0x40 [ 168.373607][ T5902] ? check_noncircular+0xdb/0x150 [ 168.379833][ T5902] rt_spin_lock+0x83/0x400 [ 168.384353][ T5902] ? raid5_quiesce+0xc2/0x8a0 [ 168.389349][ T5902] ? __pfx_rt_spin_lock+0x10/0x10 [ 168.395442][ T5902] raid5_quiesce+0xc2/0x8a0 [ 168.400445][ T5902] ? do_raw_spin_lock+0x12b/0x2f0 [ 168.406094][ T5902] ? __pfx_raid5_quiesce+0x10/0x10 [ 168.411378][ T5902] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 168.417352][ T5902] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 168.423222][ T5902] ? __timer_delete_sync+0x552/0x620 [ 168.429089][ T5902] ? __pfx_raid5_quiesce+0x10/0x10 [ 168.434454][ T5902] __md_stop_writes+0xeb/0x4b0 [ 168.439660][ T5902] md_set_readonly+0x330/0x560 [ 168.444636][ T5902] ? __pfx_md_set_readonly+0x10/0x10 [ 168.450428][ T5902] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 168.457528][ T5902] ? mutex_lock_interruptible_nested+0x152/0x1d0 [ 168.465430][ T5902] ? array_state_store+0x4a5/0xe90 [ 168.470891][ T5902] array_state_store+0x584/0xe90 [ 168.476673][ T5902] md_attr_store+0x3b7/0x640 [ 168.481750][ T5902] ? __pfx_sysfs_kf_write+0x10/0x10 [ 168.487451][ T5902] kernfs_fop_write_iter+0x3a5/0x540 [ 168.492996][ T5902] vfs_write+0x61e/0xbb0 [ 168.497481][ T5902] ? __pfx_vfs_write+0x10/0x10 [ 168.502557][ T5902] ? do_sys_openat2+0x14e/0x200 [ 168.507469][ T5902] ? kmem_cache_free+0x187/0x6d0 [ 168.512900][ T5902] ksys_write+0x156/0x270 [ 168.517737][ T5902] ? __pfx_ksys_write+0x10/0x10 [ 168.523098][ T5902] do_syscall_64+0x166/0x520 [ 168.528749][ T5902] ? trace_irq_disable+0x3b/0x140 [ 168.534747][ T5902] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 168.541997][ T5902] ? clear_bhb_loop+0x70/0xc0 [ 168.547008][ T5902] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 168.553332][ T5902] RIP: 0033:0x7fb4d4570f77 [ 168.558248][ T5902] Code: 48 89 fa 4c 89 df e8 98 1d 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff [ 168.579316][ T5902] RSP: 002b:00007ffcae126a10 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 168.587849][ T5902] RAX: ffffffffffffffda RBX: 000055556c882400 RCX: 00007fb4d4570f77 [ 168.596284][ T5902] RDX: 0000000000000008 RSI: 00007fb4d45aa11f RDI: 0000000000000005 [ 168.605150][ T5902] RBP: 000055556c8823d8 R08: 0000000000000000 R09: 0000000000000000 [ 168.613406][ T5902] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000006 [ 168.621677][ T5902] R13: ffffffffffffffff R14: 0000000000000005 R15: 00000000ffffffff [ 168.630605][ T5902] [ 168.633772][ T5902] Modules linked in: [ 168.637810][ T5902] ---[ end trace 0000000000000000 ]--- [ 168.646232][ T5902] RIP: 0010:kasan_byte_accessible+0x12/0x30 [ 168.646274][ T5902] Code: 79 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 90 e7 2a 09 cc 66 66 66 66 66 66 2e [ 168.646297][ T5902] RSP: 0018:ffffc9000544f708 EFLAGS: 00010206 [ 168.646320][ T5902] RAX: dffffc0000000000 RBX: ffffffff8b5cf203 RCX: 8000000000000001 [ 168.646340][ T5902] RDX: 0000000000000000 RSI: ffffffff8b5cf203 RDI: 000000000000000c [ 168.646367][ T5902] RBP: ffffc9000544f870 R08: 0000000000000001 R09: 0000000000000000 [ 168.646383][ T5902] R10: dffffc0000000000 R11: ffffffff87ff0a50 R12: 0000000000000060 [ 168.646402][ T5902] R13: 0000000000000000 R14: 0000000000000060 R15: 0000000000000001 [ 168.646416][ T5902] FS: 000055556c882400(0000) GS:ffff8881249b9000(0000) knlGS:0000000000000000 [ 168.646438][ T5902] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 168.646455][ T5902] CR2: 000055d585e02cd0 CR3: 0000000044162000 CR4: 00000000003526f0 [ 168.646480][ T5902] Kernel panic - not syncing: Fatal exception [ 168.758592][ T5902] Kernel Offset: disabled [ 168.763155][ T5902] Rebooting in 86400 seconds..