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WARNING: CPU: 1 PID: 16 at kernel/rcu/tree_stall.h:752 rcu_check_gp_start_stall+0x1d5/0x200 kernel/rcu/tree_stall.h:737
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.9.0-rc3-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+0x1d6/0x29e lib/dump_stack.c:118
 panic+0x2c0/0x800 kernel/panic.c:231
 __warn+0x227/0x250 kernel/panic.c:600
 report_bug+0x1b1/0x2e0 lib/bug.c:198
 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:rcu_check_gp_start_stall+0x1d5/0x200 kernel/rcu/tree_stall.h:737
Code: 07 78 ca 48 c7 c7 a0 ca 83 8b be 04 00 00 00 e8 c1 2f 52 00 b8 01 00 00 00 87 05 06 57 21 0a 85 c0 75 aa 48 c7 c0 00 f5 4f 89 <0f> 0b 49 39 c6 74 0c 48 c7 c7 00 f5 4f 89 e8 98 89 ca 06 4c 89 f7
RSP: 0018:ffffc90000d7fcb0 EFLAGS: 00010046
RAX: ffffffff894ff500 RBX: 0000000000002904 RCX: ffffffff8162738f
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8b83caa0
RBP: ffff888089ec9d18 R08: dffffc0000000000 R09: fffffbfff1707955
R10: fffffbfff1707955 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880a9a88440 R14: ffffffff894ff500 R15: 0000000000000286
 rcu_core+0x4a8/0x1130 kernel/rcu/tree.c:2651
 __do_softirq+0x256/0x6d5 kernel/softirq.c:298
 run_ksoftirqd+0xa1/0x130 kernel/softirq.c:652
 smpboot_thread_fn+0x572/0x970 kernel/smpboot.c:165
 kthread+0x37e/0x3a0 drivers/block/aoe/aoecmd.c:1234
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Kernel Offset: disabled
Rebooting in 86400 seconds..