BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.2/27026 caller is radix_tree_node_alloc.constprop.0+0x24d/0x350 lib/radix-tree.c:261 CPU: 0 PID: 27026 Comm: syz-executor.2 Not tainted 5.11.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:120 check_preemption_disabled+0x142/0x150 lib/smp_processor_id.c:53 radix_tree_node_alloc.constprop.0+0x24d/0x350 lib/radix-tree.c:261 radix_tree_extend+0x22a/0x480 lib/radix-tree.c:423 idr_get_free+0x6f7/0xa60 lib/radix-tree.c:1491 idr_alloc_u32+0x170/0x2d0 lib/idr.c:46 qrtr_port_assign net/qrtr/qrtr.c:735 [inline] __qrtr_bind.isra.0+0x141/0x650 net/qrtr/qrtr.c:788 qrtr_bind+0x1c1/0x250 net/qrtr/qrtr.c:837 __sys_bind+0x1e9/0x250 net/socket.c:1635 __do_sys_bind net/socket.c:1646 [inline] __se_sys_bind net/socket.c:1644 [inline] __x64_sys_bind+0x6f/0xb0 net/socket.c:1644 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1d3e287c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e219 RDX: 000000000000000c RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 00007f1d3e287ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc46853faf R14: 00007f1d3e2889c0 R15: 000000000119bf8c