syzbot

BUG: using smp_processor_id() in preemptible [00000000] code: dhcpcd/139
caller is debug_smp_processor_id+0x17/0x20 lib/smp_processor_id.c:60
CPU: 0 PID: 139 Comm: dhcpcd Not tainted 5.15.175-syzkaller-00803-g19092c8155b4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1c0 lib/dump_stack.c:106
 dump_stack+0x15/0x20 lib/dump_stack.c:113
 check_preemption_disabled+0x109/0x110 lib/smp_processor_id.c:49
 debug_smp_processor_id+0x17/0x20 lib/smp_processor_id.c:60
 usbnet_skb_return+0x6f/0x290 drivers/net/usb/usbnet.c:323
 usbnet_resume_rx+0x4d/0xd0 drivers/net/usb/usbnet.c:702
 usbnet_change_mtu+0x4ed/0x670 drivers/net/usb/usbnet.c:409
 __dev_set_mtu net/core/dev.c:8915 [inline]
 dev_set_mtu_ext+0x458/0x690 net/core/dev.c:8968
 dev_set_mtu+0xa0/0x180 net/core/dev.c:8992
 dev_ifsioc+0x4ad/0x10c0 net/core/dev_ioctl.c:331
 dev_ioctl+0x54d/0xe70 net/core/dev_ioctl.c:587
 sock_do_ioctl+0x34f/0x5a0 net/socket.c:1154
 sock_ioctl+0x455/0x740 net/socket.c:1257
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0x114/0x190 fs/ioctl.c:860
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860
 x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fac0fae4d49
Code: 5c c3 48 8d 44 24 08 48 89 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 b8 10 00 00 00 c7 44 24 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 76 10 48 8b 15 ae 60 0d 00 f7 d8 41 83 c8
RSP: 002b:00007ffcaee55878 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fac0fa166c0 RCX: 00007fac0fae4d49
RDX: 00007ffcaee65a68 RSI: 0000000000008922 RDI: 0000000000000012
RBP: 00007ffcaee75c28 R08: 00007ffcaee65a28 R09: 00007ffcaee659d8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcaee65a68 R14: 0000000000000028 R15: 0000000000008922
 </TASK>