__nla_validate_parse: 1 callbacks suppressed netlink: 4 bytes leftover after parsing attributes in process `syz-executor388'. ------------[ cut here ]------------ proc_dir_entry 'can-bcm/3634' already registered WARNING: CPU: 0 PID: 6116 at fs/proc/generic.c:376 proc_register+0x2e8/0x464 fs/proc/generic.c:377 Modules linked in: CPU: 0 PID: 6116 Comm: syz-executor388 Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 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 : ffff800096f57a40 x29: ffff800096f57a60 x28: dfff800000000000 x27: 0000000000000000 x26: 0000000000000004 x25: ffff0000d3d99bf8 x24: ffff0000c65e8ea4 x23: ffff0000c65e8e98 x22: 1fffe00018cbd1ca x21: ffff0000c65e8e54 x20: ffff0000d3d99c24 x19: ffff0000c65e8dc0 x18: ffff800096f56f20 x17: 0000000000000000 x16: ffff80008a830eb8 x15: 0000000000000001 x14: 1fffe0003682623a x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000003 x10: 0000000000ff0100 x9 : 4d40e4277f6ec000 x8 : 4d40e4277f6ec000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800096f57338 x4 : ffff80008e5d20c0 x3 : ffff8000805ab6bc x2 : 0000000000000001 x1 : 0000000100000001 x0 : ffff80008e80d780 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:1631 __sys_connect_file net/socket.c:2046 [inline] __sys_connect+0x268/0x290 net/socket.c:2063 __do_sys_connect net/socket.c:2073 [inline] __se_sys_connect net/socket.c:2070 [inline] __arm64_sys_connect+0x7c/0x94 net/socket.c:2070 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 irq event stamp: 2384 hardirqs last enabled at (2383): [] __up_console_sem kernel/printk/printk.c:341 [inline] hardirqs last enabled at (2383): [] __console_unlock kernel/printk/printk.c:2706 [inline] hardirqs last enabled at (2383): [] console_unlock+0x17c/0x3d4 kernel/printk/printk.c:3038 hardirqs last disabled at (2384): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436 softirqs last enabled at (1800): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1798): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---