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WARNING: CPU: 1 PID: 30913 at lib/radix-tree.c:571 delete_node+0x1e7/0x7c0 lib/radix-tree.c:571
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 30913 Comm: syz-executor.0 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:delete_node+0x1e7/0x7c0 lib/radix-tree.c:571
Code: 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 1f 80 3b 00 0f 85 b1 00 00 00 e8 a6 88 b6 fd 4c 89 f3 e9 9e fe ff ff e8 99 88 b6 fd <0f> 0b eb b5 89 d9 80 e1 07 38 c1 7c d8 48 89 df e8 74 60 f6 fd 80
RSP: 0018:ffffc900082dfa00 EFLAGS: 00010093
RAX: ffffffff83be7387 RBX: ffff8880008022d8 RCX: ffff88802d582480
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000
RBP: 0000000001000004 R08: ffffffff83be72d0 R09: ffffed100010049e
R10: ffffed100010049e R11: 0000000000000000 R12: ffff88800d3d56b0
R13: 1ffff11001a7aad5 R14: 0000000000000000 R15: dffffc0000000000
 radix_tree_delete_item+0x21e/0x2f0 lib/radix-tree.c:1429
 free_pid+0x1c4/0x2b0 kernel/pid.c:151
 __unhash_process kernel/exit.c:76 [inline]
 __exit_signal kernel/exit.c:147 [inline]
 release_task+0xb8e/0x1320 kernel/exit.c:198
 exit_notify kernel/exit.c:681 [inline]
 do_exit+0x14d9/0x1f20 kernel/exit.c:826
 do_group_exit+0x161/0x2d0 kernel/exit.c:903
 get_signal+0x13bb/0x1d50 kernel/signal.c:2757
 arch_do_signal+0x33/0x610 arch/x86/kernel/signal.c:811
 exit_to_user_mode_loop kernel/entry/common.c:136 [inline]
 exit_to_user_mode_prepare+0x8d/0x1e0 kernel/entry/common.c:167
 syscall_exit_to_user_mode+0x82/0x1d0 kernel/entry/common.c:242
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d5b9
Code: Bad RIP value.
RSP: 002b:00007f8d65634cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000118cf48 RCX: 000000000045d5b9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000118cf48
RBP: 000000000118cf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffedbc1815f R14: 00007f8d656359c0 R15: 000000000118cf4c
Kernel Offset: disabled
Rebooting in 86400 seconds..