------------[ cut here ]------------
WARNING: CPU: 1 PID: 5369 at kernel/sched/fair.c:5337 place_entity+0x463/0x520 kernel/sched/fair.c:5337
Modules linked in:
CPU: 1 UID: 0 PID: 5369 Comm: syz.1.15 Not tainted 6.11.0-rc5-next-20240827-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:place_entity+0x463/0x520 kernel/sched/fair.c:5337
Code: 27 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 48 8b 3c 24 4c 89 fe e8 77 14 00 00 48 89 04 24 e9 e0 fd ff ff 90 <0f> 0b 90 41 bd 01 00 00 00 e9 22 ff ff ff 89 d9 80 e1 07 38 c1 0f
RSP: 0018:ffffc90000a18a10 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000100000
RDX: 0000000000000400 RSI: ffff888018bd5a80 RDI: ffff888018bd5b00
RBP: dffffc0000000000 R08: ffff88801f140147 R09: 1ffff11003e28028
R10: dffffc0000000000 R11: ffffed1003e28029 R12: 000000000875ad1b
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888018bd5a80
FS: 00007f446fb026c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f446440f000 CR3: 000000007fd66000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
enqueue_entity+0x271/0x1920 kernel/sched/fair.c:5409
enqueue_task_fair+0x206/0xe30 kernel/sched/fair.c:6985
enqueue_task+0x1a5/0x300 kernel/sched/core.c:2014
activate_task kernel/sched/core.c:2056 [inline]
ttwu_do_activate+0x1d1/0x7e0 kernel/sched/core.c:3665
ttwu_queue kernel/sched/core.c:3940 [inline]
try_to_wake_up+0x8bc/0x1480 kernel/sched/core.c:4266
hrtimer_wakeup+0x62/0x80 kernel/time/hrtimer.c:1927
__run_hrtimer kernel/time/hrtimer.c:1691 [inline]
__hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1755
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1043
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1037
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x9f7/0xf50 kernel/printk/printk.c:3083
Code: 20 00 90 0f 0b 90 e9 f3 f9 ff ff e8 73 00 20 00 e8 1e ff 4b 0a 4d 85 f6 74 c0 e8 64 00 20 00 fb 49 bd 00 00 00 00 00 fc ff df <43> 80 3c 2f 00 48 8b 5c 24 30 74 08 48 89 df e8 a5 d7 88 00 4c 8b
RSP: 0018:ffffc90004186ce0 EFLAGS: 00000287
RAX: ffffffff81740dfc RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90004b82000 RSI: 000000000000800b RDI: 000000000000800c
RBP: ffffc90004186e70 R08: ffffffff81740da3 R09: 1ffffffff26f6f00
R10: dffffc0000000000 R11: fffffbfff26f6f01 R12: ffffffff8f172ba0
R13: dffffc0000000000 R14: 0000000000000200 R15: 1ffffffff1e2e57f
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3153
vprintk_emit+0x87d/0xa10 kernel/printk/printk.c:2399
_printk+0xd5/0x120 kernel/printk/printk.c:2424
set_capacity_and_notify+0x1ae/0x240 block/genhd.c:86
loop_set_size+0x44/0xb0 drivers/block/loop.c:232
loop_configure+0x9ed/0xeb0 drivers/block/loop.c:1102
lo_ioctl+0x846/0x1f50
blkdev_ioctl+0x57d/0x6a0 block/ioctl.c:676
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f446ed79a7b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f446fb01dc0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f446ed79a7b
RDX: 0000000000000003 RSI: 0000000000004c00 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000002a2
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007f446fb01ef0 R14: 00007f446fb01eb0 R15: 00007f4464400000
----------------
Code disassembly (best guess):
0: 20 00 and %al,(%rax)
2: 90 nop
3: 0f 0b ud2
5: 90 nop
6: e9 f3 f9 ff ff jmp 0xfffff9fe
b: e8 73 00 20 00 call 0x200083
10: e8 1e ff 4b 0a call 0xa4bff33
15: 4d 85 f6 test %r14,%r14
18: 74 c0 je 0xffffffda
1a: e8 64 00 20 00 call 0x200083
1f: fb sti
20: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13
27: fc ff df
* 2a: 43 80 3c 2f 00 cmpb $0x0,(%r15,%r13,1) <-- trapping instruction
2f: 48 8b 5c 24 30 mov 0x30(%rsp),%rbx
34: 74 08 je 0x3e
36: 48 89 df mov %rbx,%rdi
39: e8 a5 d7 88 00 call 0x88d7e3
3e: 4c rex.WR
3f: 8b .byte 0x8b