TITLE: general protection fault in set_next_entity
ALT: bad-access in set_next_entity
TYPE: DoS

[   61.686373] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   61.693805] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[   61.707364] CPU: 0 PID: 7924 Comm: syz-executor928 Not tainted 4.20.0+ #9
[   61.714281] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   61.723650] RIP: 0010:rb_erase_cached+0x7e2/0x3590
[   61.728574] Code: 89 a7 a0 fb ff ff 80 3c 1f 00 0f 85 5a 22 00 00 48 c1 ea 03 48 89 c7 4d 89 66 10 48 c1 ef 03 c6 04 1a f8 4c 89 e2 48 83 ca 01 <80> 3c 1f 00 0f 85 89 22 00 00 48 89 10 4c 89 e2 48 c1 ea 03 80 3c
[   61.747471] RSP: 0018:ffff8880914a7090 EFLAGS: 00010082
[   61.752843] RAX: 0000000400000001 RBX: dffffc0000000000 RCX: 1ffff11012294e1a
[   61.760109] RDX: ffff8880a61222d9 RSI: ffffed1012294e46 RDI: 0000000080000000
[   61.767373] RBP: ffff8880914a75f8 R08: ffff8880a61222e0 R09: ffff8880a94642e8
[   61.774634] R10: 000000000000005b R11: 0000000000000000 R12: ffff8880a61222d8
[   61.781895] R13: ffff8880ae62cef0 R14: ffff8880a94642d8 R15: ffff8880914a75d0
[   61.789160] FS:  0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:0000000009d83840
[   61.797379] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   61.803257] CR2: 00000000080a78d0 CR3: 00000000952b3000 CR4: 00000000001406f0
[   61.810524] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   61.817787] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   61.825046] Call Trace:
[   61.938717]  set_next_entity+0x2cc/0xb00
[   61.961287]  pick_next_task_fair+0xe1b/0x1c20
[   61.995720]  __schedule+0x4b8/0x1e90
[   62.029484]  schedule+0xfe/0x350
[   62.050592]  do_nanosleep+0x208/0x750
[   62.076003]  hrtimer_nanosleep+0x2e4/0x640
[   62.097975]  __ia32_compat_sys_nanosleep+0x1e7/0x280
[   62.111992]  do_fast_syscall_32+0x333/0xf98
[   62.144895]  entry_SYSENTER_compat+0x70/0x7f
[   62.149320] RIP: 0023:0xf7fed869
[   62.152701] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
[   62.171601] RSP: 002b:00000000fff9cb8c EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
[   62.179316] RAX: ffffffffffffffda RBX: 00000000fff9cbb8 RCX: 0000000000000000
[   62.186581] RDX: 000000000000004a RSI: 000000000000004a RDI: 00000000fff9cc18
[   62.193844] RBP: 00000000fff9cdd8 R08: 0000000000000000 R09: 0000000000000000
[   62.201108] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   62.208369] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   62.215639] Modules linked in:
[   62.218877] 
[   62.218883] ======================================================
