------------[ cut here ]------------ WARNING: CPU: 1 PID: 8606 at include/linux/cpumask.h:143 schedstat_start+0x1a0/0x20c kernel/sched/stats.c:206 Modules linked in: CPU: 1 PID: 8606 Comm: syz-executor.5 Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : cpu_max_bits_warn kernel/sched/stats.c:206 [inline] pc : cpumask_check include/linux/cpumask.h:150 [inline] pc : cpumask_next include/linux/cpumask.h:212 [inline] pc : schedstat_start+0x1a0/0x20c kernel/sched/stats.c:196 lr : seq_read_iter+0x378/0xc44 fs/seq_file.c:225 sp : ffff8000253f7980 x29: ffff8000253f7990 x28: ffff0000cce15690 x27: 1fffe000199c2ad2 x26: ffff0000cce155e0 x25: dfff800000000000 x24: 0000000000000007 x23: ffff800015cdd558 x22: 1fffe000199c2abe x21: dfff800000000000 x20: ffff800015cdd000 x19: ffff0000cce155f0 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80000826e470 x15: 0000000000000000 x14: 1ffff00002b9c0b2 x13: dfff800000000000 x12: 0000000000000001 x11: 1ffff00002b9baab x10: 0000000000000002 x9 : ffff800008af6624 x8 : 0000000000000009 x7 : ffff800008af63c8 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80000830ba14 x2 : ffff000129609b40 x1 : ffff0000cce155f0 x0 : ffff0000cce155c8 Call trace: schedstat_start+0x1a0/0x20c kernel/sched/stats.c:206 seq_read_iter+0x378/0xc44 fs/seq_file.c:225 proc_reg_read_iter+0x18c/0x2bc fs/proc/inode.c:305 call_read_iter include/linux/fs.h:1845 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x5bc/0x8ac fs/read_write.c:470 ksys_read+0x15c/0x26c fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __arm64_sys_read+0x7c/0x90 fs/read_write.c:621 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 irq event stamp: 42 hardirqs last enabled at (41): [] local_daif_restore arch/arm64/include/asm/daifflags.h:75 [inline] hardirqs last enabled at (41): [] el0_svc_common+0x9c/0x258 arch/arm64/kernel/syscall.c:107 hardirqs last disabled at (42): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (32): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (30): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---