syzbot

netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
netlink: 4 bytes leftover after parsing attributes in process `syz-executor345'.
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proc_dir_entry 'can-bcm/960' already registered
WARNING: CPU: 0 PID: 6240 at fs/proc/generic.c:376 proc_register+0x2e8/0x464 fs/proc/generic.c:377
Modules linked in:
CPU: 0 PID: 6240 Comm: syz-executor345 Not tainted 6.9.0-rc7-syzkaller-gfda5695d692c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : proc_register+0x2e8/0x464 fs/proc/generic.c:377
lr : proc_register+0x2e0/0x464 fs/proc/generic.c:375
sp : ffff80009b2d7a40
x29: ffff80009b2d7a60 x28: dfff800000000000 x27: 0000000000000000
x26: 0000000000000003 x25: ffff0000d65131f8 x24: ffff0000db015364
x23: ffff0000db015358 x22: 1fffe0001b602a62 x21: ffff0000db015314
x20: ffff0000d6513224 x19: ffff0000db015280 x18: 0000000000000008
x17: 0000000000000000 x16: ffff80008ae89e3c x15: 0000000000000001
x14: 1fffe000367b8a02 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000003 x10: 0000000000ff0100 x9 : 5590dbb5c816cb00
x8 : 5590dbb5c816cb00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80009b2d71b8 x4 : ffff80008ef95100 x3 : ffff8000805e61b0
x2 : 0000000000000001 x1 : 0000000100000001 x0 : ffff80008f1e1560
Call trace:
 proc_register+0x2e8/0x464 fs/proc/generic.c:377
 proc_create_net_single+0x140/0x198 fs/proc/proc_net.c:219
 bcm_connect+0x224/0x43c net/can/bcm.c:1673
 __sys_connect_file net/socket.c:2048 [inline]
 __sys_connect+0x268/0x290 net/socket.c:2065
 __do_sys_connect net/socket.c:2075 [inline]
 __se_sys_connect net/socket.c:2072 [inline]
 __arm64_sys_connect+0x7c/0x94 net/socket.c:2072
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
irq event stamp: 126238
hardirqs last  enabled at (126237): [<ffff80008037430c>] __up_console_sem kernel/printk/printk.c:341 [inline]
hardirqs last  enabled at (126237): [<ffff80008037430c>] __console_unlock kernel/printk/printk.c:2731 [inline]
hardirqs last  enabled at (126237): [<ffff80008037430c>] console_unlock+0x17c/0x3d4 kernel/printk/printk.c:3050
hardirqs last disabled at (126238): [<ffff80008ae85288>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470
softirqs last  enabled at (126214): [<ffff800088fc6518>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (126212): [<ffff800088fc64e4>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---