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WARNING: CPU: 0 PID: 9279 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: 9279 Comm: syz-executor.1 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 49 c8 f9 eb b4 0f 0b eb 8b 0f 1f 40 00 8b 05 c6 86 cd 02 85 c0 74 0d 65 8b 05 bb 76 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 9f da
RSP: 0018:ffffc90002a97108 EFLAGS: 00010002
RAX: 0000000000000001 RBX: 0000000000000086 RCX: ffffffff817a03c7
RDX: ffff8880a1a1e040 RSI: ffffffff81620cd1 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000000 R09: ffffffff8ab8ea4f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000086
R13: ffffffff8132f9a8 R14: 0000000000000001 R15: ffff8880ae636b80
 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
 kvm_wait arch/x86/kernel/kvm.c:817 [inline]
 kvm_wait+0x88/0x240 arch/x86/kernel/kvm.c:810
 pv_wait arch/x86/include/asm/paravirt.h:666 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x896/0xaf0 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:656 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:81 [inline]
 lockdep_lock+0x214/0x280 kernel/locking/lockdep.c:94
 graph_lock kernel/locking/lockdep.c:119 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3150 [inline]
 validate_chain kernel/locking/lockdep.c:3183 [inline]
 __lock_acquire+0x17a5/0x5650 kernel/locking/lockdep.c:4418
 lock_acquire+0x1f1/0xad0 kernel/locking/lockdep.c:4997
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
 spin_lock include/linux/spinlock.h:354 [inline]
 task_lock include/linux/sched/task.h:166 [inline]
 create_task_io_context+0x2a0/0x440 block/blk-ioc.c:276
 submit_bio_checks+0x19c5/0x1f70 block/blk-core.c:1051
 submit_bio_noacct+0x89/0x12b0 block/blk-core.c:1197
 submit_bio+0x263/0x5b0 block/blk-core.c:1282
 submit_bh_wbc+0x685/0x8e0 fs/buffer.c:3107
 __ext4_get_inode_loc+0x976/0x12f0 fs/ext4/inode.c:4383
 ext4_get_inode_loc fs/ext4/inode.c:4402 [inline]
 ext4_reserve_inode_write+0x107/0x280 fs/ext4/inode.c:5643
 __ext4_mark_inode_dirty+0x182/0x910 fs/ext4/inode.c:5810
 __ext4_new_inode+0x457d/0x5390 fs/ext4/ialloc.c:1184
 ext4_mkdir+0x3b1/0xdf0 fs/ext4/namei.c:2792
 vfs_mkdir+0x508/0x770 fs/namei.c:3647
 do_mkdirat+0x262/0x2d0 fs/namei.c:3670
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c1d9
Code: Bad RIP value.
RSP: 002b:00007fc965e49c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 000000000001f280 RCX: 000000000045c1d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020002000
RBP: 000000000078bf38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffd7f0ce9af R14: 00007fc965e4a9c0 R15: 000000000078bf0c
Kernel Offset: disabled
Rebooting in 86400 seconds..