blk_update_request: I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x1000 phys_seg 1 prio class 0
XFS (loop0): SB validate failed with error -5.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6836 at kernel/rcu/tree.c:1045 rcu_irq_enter+0x15/0x20 kernel/rcu/tree.c:1045
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 6836 Comm: syz-executor106 Not tainted 5.8.0-rc6-next-20200720-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18f/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:231
 __warn.cold+0x20/0x45 kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:545
RIP: 0010:rcu_irq_enter+0x15/0x20 kernel/rcu/tree.c:1045
Code: 00 00 00 4c 89 e7 e8 6a 39 c8 f9 eb b4 0f 0b eb 8b 0f 1f 40 00 8b 05 86 7d cd 02 85 c0 74 0d 65 8b 05 bb 66 16 78 85 c0 74 02 <0f> 0b e9 44 ff ff ff cc cc cc cc 0f 1f 44 00 00 48 8b 05 c4 8f da
RSP: 0018:ffffc90001617ae8 EFLAGS: 00010002
RAX: 0000000000000001 RBX: 0000000000000086 RCX: ffffffff817a03c7
RDX: ffff8880958c61c0 RSI: ffffffff81620cd1 RDI: 0000000000000005
RBP: ffffffff8cc535a8 R08: 0000000000000000 R09: ffffffff8ab8f10f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000086
R13: ffffffff87ee2656 R14: 0000000000000000 R15: ffffffff89c52a40
 rcu_irq_enter_irqson+0x76/0x140 kernel/rcu/tree.c:1060
 trace_irq_disable_rcuidle include/trace/events/preemptirq.h:36 [inline]
 trace_irq_disable_rcuidle include/trace/events/preemptirq.h:36 [inline]
 trace_hardirqs_off kernel/trace/trace_preemptirq.c:82 [inline]
 trace_hardirqs_off+0x114/0x210 kernel/trace/trace_preemptirq.c:74
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
 _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:159
 debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:636
 debug_rcu_head_queue kernel/rcu/rcu.h:176 [inline]
 __call_rcu kernel/rcu/tree.c:2869 [inline]
 call_rcu+0x2c/0x7e0 kernel/rcu/tree.c:2957
 lockdep_unregister_key+0x21d/0x570 kernel/locking/lockdep.c:5678
 wq_unregister_lockdep kernel/workqueue.c:3461 [inline]
 destroy_workqueue+0x449/0x740 kernel/workqueue.c:4415
 xfs_destroy_mount_workqueues+0x37/0x150 fs/xfs/xfs_super.c:546
 xfs_fc_fill_super+0x4c0/0x12e0 fs/xfs/xfs_super.c:1578
 get_tree_bdev+0x421/0x740 fs/super.c:1353
 vfs_get_tree+0x89/0x2f0 fs/super.c:1558
 do_new_mount fs/namespace.c:2912 [inline]
 do_mount+0x14f6/0x1e20 fs/namespace.c:3249
 __do_sys_mount fs/namespace.c:3459 [inline]
 __se_sys_mount fs/namespace.c:3436 [inline]
 __x64_sys_mount+0x18f/0x230 fs/namespace.c:3436
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x440359
Code: Bad RIP value.
RSP: 002b:00007ffcb4d1e758 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000440359
RDX: 0000000020000400 RSI: 00000000200001c0 RDI: 0000000020000240
RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001400084 R11: 0000000000000246 R12: 0000000000401b60
R13: 0000000000401bf0 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..