netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'.
------------[ cut here ]------------
proc_dir_entry 'can-bcm/255040' already registered
WARNING: CPU: 1 PID: 9962 at fs/proc/generic.c:375 proc_register+0x1d8/0x4a8 fs/proc/generic.c:375
Modules linked in:
CPU: 1 PID: 9962 Comm: syz-executor.0 Not tainted 6.9.0-rc3-syzkaller-00344-g8f2c057754b2 #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 : ffff80008d937ab0
x29: ffff80008d937ab0 x28: ffff0000185305d8 x27: dfff800000000000
x26: ffff0000144c0ac0 x25: ffff000018530594 x24: 0000000000000006
x23: ffff800086b25f40 x22: ffff0000185305e4 x21: ffff000014ab8640
x20: 0000000000000006 x19: ffff000018530500 x18: ffff00000a25c670
x17: 0000000000000000 x16: 0000000000000006 x15: 1fffe0000144b8cd
x14: 1fffe0000144b8dc x13: 1fffe0000144b8ca x12: ffff60000d4d55c3
x11: 1fffe0000d4d55c2 x10: ffff60000d4d55c2 x9 : dfff800000000000
x8 : ffff00006a6aae13 x7 : 0000000000000001 x6 : ffff60000d4d55c2
x5 : ffff00006a6aae10 x4 : 1fffe0000144b781 x3 : dfff800000000000
x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff00000a25bc00
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: 2068
hardirqs last  enabled at (2067): [<ffff800080304ac4>] __up_console_sem kernel/printk/printk.c:341 [inline]
hardirqs last  enabled at (2067): [<ffff800080304ac4>] __console_unlock kernel/printk/printk.c:2731 [inline]
hardirqs last  enabled at (2067): [<ffff800080304ac4>] console_unlock+0x1c0/0x1d8 kernel/printk/printk.c:3050
hardirqs last disabled at (2068): [<ffff800084e62700>] el1_dbg+0x24/0x9c arch/arm64/kernel/entry-common.c:470
softirqs last  enabled at (2052): [<ffff800080011034>] softirq_handle_end kernel/softirq.c:400 [inline]
softirqs last  enabled at (2052): [<ffff800080011034>] __do_softirq+0x8d4/0xde8 kernel/softirq.c:583
softirqs last disabled at (2043): [<ffff80008001972c>] ____do_softirq+0x10/0x1c arch/arm64/kernel/irq.c:81
---[ end trace 0000000000000000 ]---