------------[ cut here ]------------ WARNING: CPU: 0 PID: 5499 at include/linux/cpumask.h:135 cpu_max_bits_warn include/linux/cpumask.h:135 [inline] WARNING: CPU: 0 PID: 5499 at include/linux/cpumask.h:135 cpumask_check include/linux/cpumask.h:142 [inline] WARNING: CPU: 0 PID: 5499 at include/linux/cpumask.h:135 cpumask_test_cpu include/linux/cpumask.h:562 [inline] WARNING: CPU: 0 PID: 5499 at include/linux/cpumask.h:135 io_sq_offload_create+0xd2f/0xfd0 io_uring/sqpoll.c:469 Modules linked in: CPU: 0 UID: 0 PID: 5499 Comm: syz.1.49 Not tainted 6.11.0-syzkaller-08481-g88264981f208 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 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_test_cpu include/linux/cpumask.h:562 [inline] RIP: 0010:io_sq_offload_create+0xd2f/0xfd0 io_uring/sqpoll.c:469 Code: 3d f6 e9 57 f4 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c a2 f3 ff ff 48 89 df e8 8c 33 3d f6 e9 95 f3 ff ff e8 72 da d3 f5 90 <0f> 0b 90 e9 f3 fc ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 4c RSP: 0018:ffffc90009007c40 EFLAGS: 00010283 RAX: ffffffff8bc0df3e RBX: ffffc90009007e0c RCX: 0000000000040000 RDX: ffffc900044a1000 RSI: 0000000000000a9d RDI: 0000000000000a9e RBP: ffffc90009007d40 R08: ffffffff8bc0dc2b R09: 1ffffffff2038ef5 R10: dffffc0000000000 R11: fffffbfff2038ef6 R12: ffff88805e10e000 R13: 00000000ffffffff R14: 1ffff92001200f94 R15: ffffc90009007cc0 FS: 00007f9af04026c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9af0401f98 CR3: 000000002d78e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: io_uring_create+0x792/0x1360 io_uring/io_uring.c:3617 io_uring_setup io_uring/io_uring.c:3726 [inline] __do_sys_io_uring_setup io_uring/io_uring.c:3753 [inline] __se_sys_io_uring_setup+0x2ba/0x330 io_uring/io_uring.c:3747 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: 0033:0x7f9aef57def9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9af0401fc8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007f9aef735f80 RCX: 00007f9aef57def9 RDX: 0000000020000ac0 RSI: 0000000020000580 RDI: 000000000000309d RBP: 0000000020000580 R08: 0000000000000000 R09: 0000000020000ac0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000020000540 R14: 000000000000309d R15: 0000000020000ac0