netlink: 4 bytes leftover after parsing attributes in process `syz-executor.1'. ------------[ cut here ]------------ proc_dir_entry 'can-bcm/83362' already registered WARNING: CPU: 0 PID: 25715 at fs/proc/generic.c:375 proc_register+0x1d8/0x4a8 fs/proc/generic.c:375 Modules linked in: CPU: 0 PID: 25715 Comm: syz-executor.1 Not tainted 6.9.0-rc3-syzkaller-00073-ge8c39d0f57f3 #0 Hardware name: linux,dummy-virt (DT) pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : proc_register+0x1d8/0x4a8 fs/proc/generic.c:375 lr : proc_register+0x1d8/0x4a8 fs/proc/generic.c:375 sp : ffff80008d9d7ab0 x29: ffff80008d9d7ab0 x28: ffff0000179ba998 x27: dfff800000000000 x26: ffff0000179bae80 x25: ffff0000179ba954 x24: 0000000000000005 x23: ffff800086b255c0 x22: ffff0000179ba9a4 x21: ffff0000161d8000 x20: 0000000000000005 x19: ffff0000179ba8c0 x18: ffff000014858a70 x17: 0000000000000000 x16: 0000000000000006 x15: 1fffe0000290b14d x14: 1fffe0000290b15c x13: 1fffe0000290b14a x12: ffff60000d4d0fc3 x11: 1fffe0000d4d0fc2 x10: ffff60000d4d0fc2 x9 : dfff800000000000 x8 : ffff00006a687e13 x7 : 0000000000000001 x6 : ffff60000d4d0fc2 x5 : ffff00006a687e10 x4 : 1fffe0000290b001 x3 : dfff800000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000014858000 Call trace: proc_register+0x1d8/0x4a8 fs/proc/generic.c:375 proc_create_net_single+0xf4/0x168 fs/proc/proc_net.c:219 bcm_connect+0x174/0x3e4 net/can/bcm.c:1673 __sys_connect_file+0x130/0x178 net/socket.c:2048 __sys_connect+0x110/0x138 net/socket.c:2065 __do_sys_connect net/socket.c:2075 [inline] __se_sys_connect net/socket.c:2072 [inline] __arm64_sys_connect+0x6c/0xa0 net/socket.c:2072 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x6c/0x25c arch/arm64/kernel/syscall.c:48 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:133 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x50/0x180 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 irq event stamp: 2674 hardirqs last enabled at (2673): [] __up_console_sem kernel/printk/printk.c:341 [inline] hardirqs last enabled at (2673): [] __console_unlock kernel/printk/printk.c:2731 [inline] hardirqs last enabled at (2673): [] console_unlock+0x1c0/0x1d8 kernel/printk/printk.c:3050 hardirqs last disabled at (2674): [] el1_dbg+0x24/0x9c arch/arm64/kernel/entry-common.c:470 softirqs last enabled at (2654): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (2654): [] __do_softirq+0x8d4/0xde8 kernel/softirq.c:583 softirqs last disabled at (2623): [] ____do_softirq+0x10/0x1c arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]---