------------[ cut here ]------------ WARNING: CPU: 3 PID: 6154 at include/linux/cpumask.h:144 cpu_max_bits_warn include/linux/cpumask.h:144 [inline] WARNING: CPU: 3 PID: 6154 at include/linux/cpumask.h:144 cpumask_check include/linux/cpumask.h:151 [inline] WARNING: CPU: 3 PID: 6154 at include/linux/cpumask.h:144 cpumask_clear_cpu include/linux/cpumask.h:538 [inline] WARNING: CPU: 3 PID: 6154 at include/linux/cpumask.h:144 __mm_cid_put kernel/sched/sched.h:3256 [inline] WARNING: CPU: 3 PID: 6154 at include/linux/cpumask.h:144 sched_mm_cid_remote_clear+0x374/0x4f0 kernel/sched/core.c:11874 Modules linked in: CPU: 3 PID: 6154 Comm: udevadm Not tainted 6.10.0-rc2-syzkaller-00315-gdc772f8237f9 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:cpu_max_bits_warn include/linux/cpumask.h:144 [inline] RIP: 0010:cpumask_check include/linux/cpumask.h:151 [inline] RIP: 0010:cpumask_clear_cpu include/linux/cpumask.h:538 [inline] RIP: 0010:__mm_cid_put kernel/sched/sched.h:3256 [inline] RIP: 0010:sched_mm_cid_remote_clear+0x374/0x4f0 kernel/sched/core.c:11874 Code: 00 e9 48 fe ff ff 4d 85 ed 89 44 24 48 0f 84 52 ff ff ff e8 6e d6 36 00 9c 58 f6 c4 02 0f 85 41 01 00 00 fb e9 47 ff ff ff 90 <0f> 0b 90 e9 0b ff ff ff e8 af 03 16 00 84 c0 0f 85 d6 fd ff ff e8 RSP: 0018:ffffc9000352fcc8 EFLAGS: 00010012 RAX: 0000000000000023 RBX: ffffe8ffad2340a8 RCX: ffffffff815f0518 RDX: 00000000ffffffff RSI: 0000000000000004 RDI: ffffc9000352fd10 RBP: ffff888027529bc8 R08: 0000000000000001 R09: fffff520006a5fa2 R10: 0000000000000003 R11: 0000000000000000 R12: 1ffff920006a5f9a R13: 0000000000000200 R14: ffffc9000352fd10 R15: ffff88802c23ec00 FS: 00007f382beaa280(0000) GS:ffff88802c300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c001203000 CR3: 0000000059eec000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sched_mm_cid_remote_clear_old kernel/sched/core.c:11907 [inline] task_mm_cid_work+0x39a/0x920 kernel/sched/core.c:11957 task_work_run+0x14e/0x250 kernel/task_work.c:180 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:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x278/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f382bb16b6a Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007fffda32eee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: 0000000000000037 RBX: 000055d7cef522a0 RCX: 00007f382bb16b6a RDX: 0000000000001000 RSI: 000055d7cef66330 RDI: 0000000000000005 RBP: 000055d7cef522a0 R08: 0000000000000005 R09: 0000000000000040 R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000003fff R14: 00007fffda32f3c8 R15: 000000000000000a