syzbot

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proc_dir_entry 'can-bcm/49656' already registered
WARNING: CPU: 0 PID: 7700 at fs/proc/generic.c:377 proc_register+0x347/0x4e0 fs/proc/generic.c:376
Modules linked in:
CPU: 0 PID: 7700 Comm: syz-executor.2 Not tainted 5.15.154-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:proc_register+0x347/0x4e0 fs/proc/generic.c:376
Code: 7c 24 08 4c 8b 64 24 28 48 8b 6c 24 20 74 08 48 89 ef e8 4c 42 d0 ff 48 8b 55 00 48 c7 c7 00 39 99 8a 48 89 de e8 c9 27 52 ff <0f> 0b 48 c7 c7 00 ba a4 8c e8 4b 39 2d 08 48 8b 44 24 30 42 0f b6
RSP: 0018:ffffc90002cd7c48 EFLAGS: 00010246
RAX: f0bb96858269c800 RBX: ffff8880608b0ae4 RCX: 0000000000040000
RDX: ffffc90004279000 RSI: 000000000000507f RDI: 0000000000005080
RBP: ffff88801eeffad8 R08: ffffffff8166854c R09: ffffed1017344f24
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801eeffa94
R13: 0000000000000005 R14: dffffc0000000000 R15: ffff88801eeffa00
FS:  00007f528ce396c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f528ce39d58 CR3: 00000000658e8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 proc_create_net_single+0x150/0x1a0 fs/proc/proc_net.c:209
 bcm_connect+0x28f/0x470 net/can/bcm.c:1626
 __sys_connect_file net/socket.c:1918 [inline]
 __sys_connect+0x38b/0x410 net/socket.c:1935
 __do_sys_connect net/socket.c:1945 [inline]
 __se_sys_connect net/socket.c:1942 [inline]
 __x64_sys_connect+0x76/0x80 net/socket.c:1942
 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: 0033:0x7f528e8e7e69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f528ce390c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f528ea16050 RCX: 00007f528e8e7e69
RDX: 0000000000000010 RSI: 0000000020000440 RDI: 0000000000000005
RBP: 00007f528e93447a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f528ea16050 R15: 00007ffcffada908
 </TASK>