syzbot

------------[ cut here ]------------
WARNING: CPU: 0 PID: 6915 at ./include/linux/cpumask.h:135 cpu_max_bits_warn include/linux/cpumask.h:135 [inline]
WARNING: CPU: 0 PID: 6915 at ./include/linux/cpumask.h:135 cpumask_check include/linux/cpumask.h:142 [inline]
WARNING: CPU: 0 PID: 6915 at ./include/linux/cpumask.h:135 cpumask_clear_cpu include/linux/cpumask.h:536 [inline]
WARNING: CPU: 0 PID: 6915 at ./include/linux/cpumask.h:135 __mm_cid_put kernel/sched/sched.h:3640 [inline]
WARNING: CPU: 0 PID: 6915 at ./include/linux/cpumask.h:135 sched_mm_cid_remote_clear+0x48a/0x4f0 kernel/sched/core.c:10484
Modules linked in:
CPU: 0 UID: 0 PID: 6915 Comm: modprobe Not tainted 6.14.0-rc7-syzkaller-00179-gb3ee1e460951 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:cpu_max_bits_warn include/linux/cpumask.h:135 [inline]
RIP: 0010:cpumask_check include/linux/cpumask.h:142 [inline]
RIP: 0010:cpumask_clear_cpu include/linux/cpumask.h:536 [inline]
RIP: 0010:__mm_cid_put kernel/sched/sched.h:3640 [inline]
RIP: 0010:sched_mm_cid_remote_clear+0x48a/0x4f0 kernel/sched/core.c:10484
Code: 0e 01 e8 f9 83 0d 00 eb 9d 4c 89 ef e8 0f 9a 93 00 e9 66 fc ff ff e8 05 9a 93 00 e9 46 fd ff ff 89 44 24 48 e9 16 fe ff ff 90 <0f> 0b 90 e9 ef fd ff ff e8 89 db cc 09 e9 06 ff ff ff 48 89 d6 48
RSP: 0000:ffffc900035b7cf8 EFLAGS: 00010006
RAX: 000000000000001f RBX: ffffe8ffffd48880 RCX: ffffffff81889342
RDX: 00000000ffffffff RSI: 0000000000000004 RDI: ffffc900035b7d40
RBP: 1ffff920006b6fa0 R08: 0000000000000001 R09: fffff520006b6fa8
R10: 0000000000000003 R11: 0000000000000000 R12: ffff8880216c4550
R13: ffffe8ffffd48888 R14: 0000000000000200 R15: ffff8880b873ed40
FS:  00007f811c2b8380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f811c490445 CR3: 00000000530ca000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 sched_mm_cid_remote_clear_old kernel/sched/core.c:10517 [inline]
 task_mm_cid_work+0x39e/0x930 kernel/sched/core.c:10567
 task_work_run+0x151/0x250 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 irqentry_exit_to_user_mode+0x25c/0x280 kernel/entry/common.c:231
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f811c37891f
Code: 4d 8b 3f eb dc 45 31 ff 48 8d 05 0c 95 13 00 48 89 85 68 ff ff ff 48 63 85 74 ff ff ff 48 8d 15 27 7b 11 00 8b bd 74 ff ff ff <44> 0f b6 24 02 48 8d 05 35 7b 11 00 49 01 c4 e8 48 eb ff ff 48 8d
RSP: 002b:00007ffdb2147140 EFLAGS: 00010246
RAX: 0000000000000005 RBX: 00007f811c4a9c29 RCX: 0000000000000000
RDX: 00007f811c490440 RSI: 00007f811c4e8b30 RDI: 0000000000000005
RBP: 00007ffdb2147230 R08: 00007f811c4e8b40 R09: 0000000000000000
R10: 000000000000006c R11: 0000000000000217 R12: ffffffffffffff80
R13: 00007f811c4e88c0 R14: 00007f811c4e8ac0 R15: 0000000000000000
 </TASK>